Water Temperature of the Intracoastal Waterway in Port St. Joe, FL

Current Water Temperature

77.5°F

Measurement Time: Saturday, April 18, 2026, 11:45 AM EDT

Temperature Locations

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Local Points of Interest

Gulf County Canal

Intracoastal Waterway

Station Name: IWW EAST OF GULF CO CANAL NEAR PORT ST JOE, FL
Data Source: Water Data - usgc.gov

Elevation Above Sea Level: 46 feet

Nearest Address:
Port St. Joe, FL 32456
Gulf County

GPS Coordinates: 29.88555556, -85.2436111

Nearby Water Temperatures

Intracoastal Waterway, White City, FL (0.7 mi)
Jackson River, Apalachicola, FL (12.5 mi)
Apalachicola River , Sumatra, FL (14.4 mi)
Apalachicola River, Apalachicola, FL (19.3 mi)
Saint Andrew Bay, Panama City, FL (31.3 mi)
Gulf of Mexico, Panama City Beach, FL (44.2 mi)
Sopchoppy River, Sopchoppy, FL (47.9 mi)
Spring Creek, Spring Creek, FL (56.3 mi)
Apalachicola River , Chattahoochee, FL (60.8 mi)
Wakulla Springs, Crawfordville, FL (61.3 mi)
Jackson Blue Spring, Marianna, FL (62.8 mi)
Aucilla River, Lamont, FL (77.2 mi)
Wacissa River, Wacissa, FL (80.8 mi)
Wacissa River, Wacissa, FL (81.1 mi)
Econfina River, Perry, FL (81.5 mi)

Weather for Port St. Joe, Florida

Current Weather

79°F
Partly cloudy
Partly cloudy
81.9°F
80.8°F
56%
WSW 9.2 mph
10.6 mph
77.9°F
65.8°F
0 in
50%
9 mi
1017 mbar
7

Five Day Weather Forecast

Sunny
Sat
H: 82°F
L: 58°F
Partly Cloudy
Sun
H: 77°F
L: 64°F
Partly Cloudy
Mon
H: 80°F
L: 56°F
Sunny
Tue
H: 77°F
L: 62°F
Patchy rain nearby
Wed
H: 77°F
L: 66°F

Air Quality

AQI: 1 - Good
PM2.5: 6.95 μg/m3
PM10: 10.35 μg/m3
Carbon Monoxide: 125.85 μg/m3
Nitrogen Dioxide: 1.65 μg/m3
Sulphur Dioxide: 1.35 μg/m3
Ozone: 101 μg/m3

Astronomical

Sunrise: 7:11 AM
Sun Transit: 1:40 PM
Sunset: 8:10 PM
Daylight: 12 hrs 59 mins
Moonrise: 7:40 AM
Moon Transit: 2:43 PM
Moonset: 9:56 PM
Moon Phase: New
Moon Illumination: 1.2%

Best Times for Fishing or Hunting

Major Periods

2:24 AM - 4:54 AM
2:13 PM - 4:43 PM

Minor Periods

9:26 PM - 10:56 PM
7:10 AM - 8:40 AM

Action Rating: 4 out of 5

Fire Weather Watch issued April 18 at 2:27AM EDT until April 20 at 8:00PM EDT by NWS Tallahassee FL

Effective: Sat April 18, 2026, 2:27 AM
Expires: Sat April 18, 2026, 4:00 PM

...Critical Fire Weather Today through Monday... Today, the Fire Weather Watch has been upgraded to a Red Flag Warning and is in effect for portions of the Florida Big Bend and east of the Flint River in Georgia, where RH will tank to near or below 30 percent, where wind will exceed 12 mph, where dispersion will exceed 90, where temperatures will reach 88-92 degrees (within a few degrees of record highs), and where the Hot Dry Windy Index exceeds the 90th percentile at a time of year when its climatology is already nearing its annual peak in early May. A dry cold front on Sunday will bring northerly afternoon wind gusts of 20-25 mph, and RH will be dropping in the afternoon as a drier air mass arrives. Lingering cloud cover and shading of fuels will be the main inhibitor to active fire behavior on Sunday, but critical conditions remain possible Sunday afternoon. On Monday, a very dry air mass will overspread the region, with minimum relative humidities commonly in the 15-20 percent range. Sustained northeast winds will be near 10 to 15 mph and support extremely high dispersion. Full sunshine, seasonably warm late April temperatures, and ongoing drought will all contribute to a critical fire environment. A Fire Weather Watch remains in effect for Monday where winds are currently forecast to exceed 15 mph, and the watch could be expanded in later forecast updates. * AFFECTED AREA...Florida fire weather zones 010, 011, 012, 014, 015, 028, 029, 034, 112, 114, 115, 118, 127, 128, and 134. Georgia fire weather zones 143, 144, and 155. * WIND...Northeast near 15 mph, with gusts near 20 mph. * HUMIDITY...15-20 percent, followed by poor humidity recovery on Monday night. * IMPACTS...Any fires that develop will likely spread rapidly. Outdoor burning is not recommended.

A Fire Weather Watch means that critical fire weather conditions are forecast to occur. Listen for later forecasts and possible Red Flag Warnings.


Fire Weather Watch issued April 18 at 2:06PM EDT until April 20 at 8:00PM EDT by NWS Tallahassee FL

Effective: Sat April 18, 2026, 2:06 PM
Expires: Sun April 19, 2026, 3:30 AM

...Critical Fire Weather through Monday... A cold frontal passage on Sunday morning will be followed on Sunday afternoon by northerly winds gusting around 25 mph, and RH will be dropping in the afternoon as a drier air mass arrives. Lingering cloud cover will be the main inhibitor to active fire behavior on Sunday, but critical conditions remain possible Sunday afternoon. With dry air continuing to filter in on Sunday night, there will be poor nighttime humidity recovery. On Monday, the heart of the dry air mass will be in place, with minimum relative humidities commonly in the 15-20 percent range. Sustained northeast winds will be near 10 to 15 mph and support extremely high dispersion. Full sunshine, seasonably warm late April temperatures, and ongoing drought will all contribute to a critical fire environment. A Fire Weather Watch remains in effect for Monday where winds are currently forecast to touch 15 mph. The watch could be expanded in later forecast updates. * AFFECTED AREA...Florida fire weather zones 010, 011, 012, 014, 015, 028, 029, 034, 112, 114, 115, 118, 127, 128, and 134. Georgia fire weather zones 143 and 155. * WIND...Northeast near 15 mph, with gusts near 25 mph. * HUMIDITY...15-20 percent, following poor humidity recovery on Sunday night. * IMPACTS...Any fires that develop will likely spread rapidly. Outdoor burning is not recommended.

A Fire Weather Watch means that critical fire weather conditions are forecast to occur. Listen for later forecasts and possible Red Flag Warnings.


Red Flag Warning issued April 18 at 2:27AM EDT until April 18 at 8:00PM EDT by NWS Tallahassee FL

Effective: Sat April 18, 2026, 2:27 AM
Expires: Sat April 18, 2026, 4:00 PM

...Critical Fire Weather Today through Monday... Today, the Fire Weather Watch has been upgraded to a Red Flag Warning and is in effect for portions of the Florida Big Bend and east of the Flint River in Georgia, where RH will tank to near or below 30 percent, where wind will exceed 12 mph, where dispersion will exceed 90, where temperatures will reach 88-92 degrees (within a few degrees of record highs), and where the Hot Dry Windy Index exceeds the 90th percentile at a time of year when its climatology is already nearing its annual peak in early May. A dry cold front on Sunday will bring northerly afternoon wind gusts of 20-25 mph, and RH will be dropping in the afternoon as a drier air mass arrives. Lingering cloud cover and shading of fuels will be the main inhibitor to active fire behavior on Sunday, but critical conditions remain possible Sunday afternoon. On Monday, a very dry air mass will overspread the region, with minimum relative humidities commonly in the 15-20 percent range. Sustained northeast winds will be near 10 to 15 mph and support extremely high dispersion. Full sunshine, seasonably warm late April temperatures, and ongoing drought will all contribute to a critical fire environment. A Fire Weather Watch remains in effect for Monday where winds are currently forecast to exceed 15 mph, and the watch could be expanded in later forecast updates. ...FIRE WEATHER WATCH REMAINS IN EFFECT FROM MONDAY MORNING THROUGH MONDAY EVENING FOR LOW HUMIDITY, MODERATE BREEZES, VERY HIGH DISPERSIONS AND ONGOING DROUGHT... The National Weather Service in Tallahassee has issued a Red Flag Warning, which is in effect from 11 AM EDT /10 AM CDT/ this morning to 8 PM EDT /7 PM CDT/ this evening. The Fire Weather Watch is no longer in effect. The National Weather Service in Tallahassee has issued a Fire Weather Watch, which is in effect from Saturday morning through Saturday evening. a Fire Weather Watch has also been issued from Monday morning through Monday evening. * AFFECTED AREA...Florida fire weather zones 013, 016, 017, 018, 019, 027, 326, and 426. Georgia fire weather zones 145, 146, 147, 156, 157, 158, 159, and 160. * WIND...On Saturday...southwest 10-15 mph, with gusts near 20 mph. On Monday, northeast winds near 15 mph, with gusts around 25 mph. * HUMIDITY...On Saturday, 30-35 percent. On Monday, 15-20 percent, followed by poor humidity recovery on Monday night. * IMPACTS...Any fires that develop will likely spread rapidly. Outdoor burning is not recommended.

A Red Flag Warning means that critical fire weather conditions are either occurring now, or will shortly. A combination of strong winds, low relative humidity, and warm temperatures can contribute to extreme fire behavior. A Fire Weather Watch means that critical fire weather conditions are forecast to occur. Listen for later forecasts and possible Red Flag Warnings.


Fire Weather Watch issued April 18 at 2:27AM EDT until April 20 at 8:00PM EDT by NWS Tallahassee FL

Effective: Sat April 18, 2026, 2:27 AM
Expires: Sat April 18, 2026, 4:00 PM

...Critical Fire Weather Today through Monday... Today, the Fire Weather Watch has been upgraded to a Red Flag Warning and is in effect for portions of the Florida Big Bend and east of the Flint River in Georgia, where RH will tank to near or below 30 percent, where wind will exceed 12 mph, where dispersion will exceed 90, where temperatures will reach 88-92 degrees (within a few degrees of record highs), and where the Hot Dry Windy Index exceeds the 90th percentile at a time of year when its climatology is already nearing its annual peak in early May. A dry cold front on Sunday will bring northerly afternoon wind gusts of 20-25 mph, and RH will be dropping in the afternoon as a drier air mass arrives. Lingering cloud cover and shading of fuels will be the main inhibitor to active fire behavior on Sunday, but critical conditions remain possible Sunday afternoon. On Monday, a very dry air mass will overspread the region, with minimum relative humidities commonly in the 15-20 percent range. Sustained northeast winds will be near 10 to 15 mph and support extremely high dispersion. Full sunshine, seasonably warm late April temperatures, and ongoing drought will all contribute to a critical fire environment. A Fire Weather Watch remains in effect for Monday where winds are currently forecast to exceed 15 mph, and the watch could be expanded in later forecast updates. ...FIRE WEATHER WATCH REMAINS IN EFFECT FROM MONDAY MORNING THROUGH MONDAY EVENING FOR LOW HUMIDITY, MODERATE BREEZES, VERY HIGH DISPERSIONS AND ONGOING DROUGHT... The National Weather Service in Tallahassee has issued a Red Flag Warning, which is in effect from 11 AM EDT /10 AM CDT/ this morning to 8 PM EDT /7 PM CDT/ this evening. The Fire Weather Watch is no longer in effect. The National Weather Service in Tallahassee has issued a Fire Weather Watch, which is in effect from Saturday morning through Saturday evening. a Fire Weather Watch has also been issued from Monday morning through Monday evening. * AFFECTED AREA...Florida fire weather zones 013, 016, 017, 018, 019, 027, 326, and 426. Georgia fire weather zones 145, 146, 147, 156, 157, 158, 159, and 160. * WIND...On Saturday...southwest 10-15 mph, with gusts near 20 mph. On Monday, northeast winds near 15 mph, with gusts around 25 mph. * HUMIDITY...On Saturday, 30-35 percent. On Monday, 15-20 percent, followed by poor humidity recovery on Monday night. * IMPACTS...Any fires that develop will likely spread rapidly. Outdoor burning is not recommended.

A Red Flag Warning means that critical fire weather conditions are either occurring now, or will shortly. A combination of strong winds, low relative humidity, and warm temperatures can contribute to extreme fire behavior. A Fire Weather Watch means that critical fire weather conditions are forecast to occur. Listen for later forecasts and possible Red Flag Warnings.


Fire Weather Watch issued April 18 at 2:06PM EDT until April 20 at 8:00PM EDT by NWS Tallahassee FL

Effective: Sat April 18, 2026, 2:06 PM
Expires: Sun April 19, 2026, 3:30 AM

...Critical Fire Weather through Monday... A cold frontal passage on Sunday morning will be followed on Sunday afternoon by northerly winds gusting around 25 mph, and RH will be dropping in the afternoon as a drier air mass arrives. Lingering cloud cover will be the main inhibitor to active fire behavior on Sunday, but critical conditions remain possible Sunday afternoon. With dry air continuing to filter in on Sunday night, there will be poor nighttime humidity recovery. On Monday, the heart of the dry air mass will be in place, with minimum relative humidities commonly in the 15-20 percent range. Sustained northeast winds will be near 10 to 15 mph and support extremely high dispersion. Full sunshine, seasonably warm late April temperatures, and ongoing drought will all contribute to a critical fire environment. A Fire Weather Watch remains in effect for Monday where winds are currently forecast to touch 15 mph. The watch could be expanded in later forecast updates. ...RED FLAG WARNING FOR THIS AFTERNOON IS CANCELLED... The National Weather Service in Tallahassee has cancelled the Red Flag Warning for the rest of this afternoon over Calhoun, Liberty, and Decatur Counties. Relative humidity this afternoon will not get as low as originally forecast. A Fire Weather Watch remains in effect from Monday morning through Monday evening for gusty winds and low humidity. * AFFECTED AREA...Florida fire weather zones 013, 326, and 426. Georgia fire weather zone 156. * WIND...On Monday, northeast winds near 15 mph, with gusts around 25 mph. * HUMIDITY...On Monday, 15-20 percent, following poor humidity recovery on Sunday night. * IMPACTS...Any fires that develop will likely spread rapidly. Outdoor burning is not recommended.

A Fire Weather Watch means that critical fire weather conditions are forecast to occur. Listen for later forecasts and possible Red Flag Warnings.


Saturday, April 18, 2026

Weather Forecast

Sunny
81.5°F
58.3°F
71.5°F
74%
0 in
0%
0%
9.4 mph
10.8


Air Quality

AQI: 1 - Good
PM2.5: 7.69 μg/m3
PM10: 10.71 μg/m3
Carbon Monoxide: 126.17 μg/m3
Nitrogen Dioxide: 2.81 μg/m3
Sulphur Dioxide: 1.62 μg/m3
Ozone: 95.92 μg/m3

Astronomical

Sunrise: 7:11 AM
Sun Transit: 1:40 PM
Sunset: 8:10 PM
Daylight: 12 hrs 59 mins
Moonrise: 7:40 AM
Moon Transit: 2:43 PM
Moonset: 9:56 PM
Moon Phase: New
Moon Illumination: 1.2%

Best Times for Fishing or Hunting

Major Periods

2:24 AM - 4:54 AM
2:13 PM - 4:43 PM

Minor Periods

9:26 PM - 10:56 PM
7:10 AM - 8:40 AM

Action Rating: 4 out of 5

Sunday, April 19, 2026

Weather Forecast

Partly Cloudy
77.4°F
64.3°F
71.8°F
58%
0 in
0%
0%
16.8 mph
8.7


Air Quality

AQI: 1 - Good
PM2.5: 6.62 μg/m3
PM10: 8.61 μg/m3
Carbon Monoxide: 135.21 μg/m3
Nitrogen Dioxide: 2.82 μg/m3
Sulphur Dioxide: 2.1 μg/m3
Ozone: 90.72 μg/m3

Astronomical

Sunrise: 7:10 AM
Sun Transit: 1:40 PM
Sunset: 8:11 PM
Daylight: 13 hrs 1 mins
Moonrise: 8:27 AM
Moon Transit: 3:44 PM
Moonset: 11:09 PM
Moon Phase: Waxing Crescent
Moon Illumination: 4.9%

Best Times for Fishing or Hunting

Major Periods

3:23 AM - 5:53 AM
3:14 PM - 5:44 PM

Minor Periods

12:00 AM - 12:00 AM
7:57 AM - 9:27 AM

Action Rating: 2 out of 5

Monday, April 20, 2026

Weather Forecast

Partly Cloudy
79.6°F
56°F
67.6°F
34%
0 in
0%
0%
13.9 mph
9.5


Air Quality

AQI: 1 - Good
PM2.5: 4.61 μg/m3
PM10: 5.71 μg/m3
Carbon Monoxide: 160.09 μg/m3
Nitrogen Dioxide: 2.55 μg/m3
Sulphur Dioxide: 2.33 μg/m3
Ozone: 107 μg/m3

Astronomical

Sunrise: 7:09 AM
Sun Transit: 1:39 PM
Sunset: 8:11 PM
Daylight: 13 hrs 3 mins
Moonrise: 9:21 AM
Moon Transit: 4:49 PM
Moonset: 12:09 AM
Moon Phase: Waxing Crescent
Moon Illumination: 10.8%

Best Times for Fishing or Hunting

Major Periods

4:26 AM - 6:56 AM
4:19 PM - 6:49 PM

Minor Periods

8:51 AM - 10:21 AM
12:00 AM - 12:00 AM

Action Rating: 3 out of 5

Tuesday, April 21, 2026

Weather Forecast

Sunny
77.3°F
61.7°F
69.6°F
46%
0 in
0%
0%
14.1 mph
9.2


Air Quality

AQI: 1 - Good
PM2.5: 5.39 μg/m3
PM10: 7.93 μg/m3
Carbon Monoxide: 160.92 μg/m3
Nitrogen Dioxide: 2.59 μg/m3
Sulphur Dioxide: 1.95 μg/m3
Ozone: 102.32 μg/m3

Astronomical

Sunrise: 7:08 AM
Sun Transit: 1:39 PM
Sunset: 8:12 PM
Daylight: 13 hrs 4 mins
Moonrise: 10:24 AM
Moon Transit: 5:54 PM
Moonset: 12:20 AM
Moon Phase: Waxing Crescent
Moon Illumination: 18.8%

Best Times for Fishing or Hunting

Major Periods

5:31 AM - 8:01 AM
5:24 PM - 7:54 PM

Minor Periods

9:54 AM - 11:24 AM
12:00 AM - 12:00 AM

Action Rating: 3 out of 5

Wednesday, April 22, 2026

Weather Forecast

Patchy rain nearby
76.5°F
65.7°F
70.6°F
56%
0.01 in
88%
0%
14.3 mph
7.7


Air Quality

AQI: 1 - Good
PM2.5: 6.75 μg/m3
PM10: 8.74 μg/m3
Carbon Monoxide: 184.35 μg/m3
Nitrogen Dioxide: 5.11 μg/m3
Sulphur Dioxide: 2.61 μg/m3
Ozone: 86.23 μg/m3

Astronomical

Sunrise: 7:07 AM
Sun Transit: 1:39 PM
Sunset: 8:13 PM
Daylight: 13 hrs 6 mins
Moonrise: 11:31 AM
Moon Transit: 6:56 PM
Moonset: 1:22 AM
Moon Phase: Waxing Crescent
Moon Illumination: 28.4%

Best Times for Fishing or Hunting

Major Periods

6:35 AM - 9:05 AM
6:26 PM - 8:56 PM

Minor Periods

11:01 AM - 12:31 AM
12:52 AM - 2:22 AM

Action Rating: 2 out of 5

The times presented here are based upon the solunar theory, which is the idea that the movements of fish and other animals are affected by the location of the sun and moon. The major periods are believed to be the times of the greatest animal activity and occur when the moon is directly overhead or underfoot (lunar transits). The minor periods also see increased activity and occur when the moon is rising or setting. The strongest activity occurs during full or new moons, and the weakest during quarter or three quarter moons. This is indicated by the Action Rating.

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