Water Temperature of the Chattahoochee River in Alpharetta, GA

Current Water Temperature

54.0°F

Measurement Time: Monday, April 20, 2026, 7:00 PM EDT

Temperature Locations

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Local Points of Interest

Garrard Landing Park; Atlanta, GA

Chattahoochee River

Station Name: CHATTAHOOCHEE R 0.39 MI DS GA140, ALPHARETTA, GA
Data Source: Water Data - usgc.gov

Elevation Above Sea Level: 892 feet

Nearest Address:
Garrard Landing Park
Alpharetta, GA 30022
Fulton County

GPS Coordinates: 33.97305556, -84.26888889

Nearby Water Temperatures

Peachtree Creek, Brookhaven, GA (10.7 mi)
Chattahoochee River, Suwanee, GA (10.8 mi)
Suwanee Creek, Suwanee, GA (11.1 mi)
Level Creek, Suwanee, GA (13.9 mi)
Richland Creek, Sugar Hill, GA (15.8 mi)
Pole Bridge Creek, Lithonia, GA (22.1 mi)
Etowah River, Cartersville, GA (30 mi)
Chattahoochee River, Helen, GA (59 mi)
Falling Creek, Juliette, GA (68 mi)
Hiwassee River , Reliance, TN (85 mi)
Richard B. Russell Lake, Calhoun Falls, SC (94.9 mi)
Cheoah River, Tapoco, NC (103.2 mi)
Lake Strom Thurmond, McCormick, SC (110.7 mi)
Saluda River, Williamston, SC (113.2 mi)
Oconaluftee River, Birdtown, NC (115.2 mi)

Weather for Alpharetta, Georgia

Current Weather

59.2°F
Clear
Clear
59.2°F
60.7°F
47%
WNW 4.9 mph
8.7 mph
60.6°F
35.8°F
0 in
0%
9 mi
1024 mbar
0

Five Day Weather Forecast

Sunny
Mon
H: 79°F
L: 41°F
Sunny
Tue
H: 79°F
L: 49°F
Sunny
Wed
H: 82°F
L: 61°F
Partly Cloudy
Thu
H: 82°F
L: 61°F
Partly Cloudy
Fri
H: 83°F
L: 63°F

Air Quality

AQI: 1 - Good
PM2.5: 10.95 μg/m3
PM10: 12.35 μg/m3
Carbon Monoxide: 222.85 μg/m3
Nitrogen Dioxide: 18.45 μg/m3
Sulphur Dioxide: 3.65 μg/m3
Ozone: 63 μg/m3

Astronomical

Sunrise: 7:00 AM
Sun Transit: 1:35 PM
Sunset: 8:13 PM
Daylight: 13 hrs 13 mins
Moonrise: 9:04 AM
Moon Transit: 4:45 PM
Moonset: 12:18 AM
Moon Phase: Waxing Crescent
Moon Illumination: 10.8%

Best Times for Fishing or Hunting

Major Periods

4:30 AM - 7:00 AM
4:15 PM - 6:45 PM

Minor Periods

8:34 AM - 10:04 AM
12:00 AM - 12:00 AM

Action Rating: 3 out of 5

Special Weather Statement issued April 20 at 1:38AM EDT by NWS Peachtree City GA

Effective: Mon April 20, 2026, 1:38 AM
Expires: Mon April 20, 2026, 8:00 PM

Relative Humidities of 30 percent or less can be expected for 4 or more hours this afternoon into the evening. Winds will be NW to N at 6 to 10 MPH with gusts to 18 MPH. With dry fuels, high fire danger conditions can be expected. Please refer to your local burn permitting authorities whether you may burn outdoors. If you do burn outside, use extreme caution.


Red Flag Warning issued April 20 at 1:38AM EDT until April 20 at 8:00PM EDT by NWS Peachtree City GA

Effective: Mon April 20, 2026, 1:38 AM
Expires: Mon April 20, 2026, 8:00 PM

The National Weather Service in Peachtree City has issued a Red Flag Warning for low relative humidity and strong winds in northeast Georgia, which is in effect from noon to 8 PM EDT today. The Fire Weather Watch is no longer in effect. * Affected Area...Northeast Georgia. * Timing...Noon to 8PM Monday. * Winds...Northwest at 10 to 15 mph with gusts up to 25 mph. Gusts up to 30 mph are possible along the ridgelines and peaks in northeast Georgia. * Relative Humidity...25 to 30 percent. * Temperatures...Between 70 to 75 degrees, and between 60 to 65 degrees for portions of northeast Georgia at elevation. * Impacts...With elevated winds and low relative humidity, extremely dangerous fire weather conditions are possible. Outdoor burning is strongly discouraged.

This warning includes the Chattahoochee National Forest. A Red Flag Warning means that critical fire weather conditions are either occurring...or will occur within 24 hours. Please refer to the local burn permitting authorities on whether you may burn outdoors. If you do burn outside...use extreme caution. Please advise the appropriate officials or fire crews in the field of the Red Flag Warning.
Monday, April 20, 2026

Weather Forecast

Sunny
78.8°F
41.2°F
60.3°F
40%
0 in
0%
0%
11 mph
7.9


Air Quality

AQI: 1 - Good
PM2.5: 8.15 μg/m3
PM10: 9.8 μg/m3
Carbon Monoxide: 193.17 μg/m3
Nitrogen Dioxide: 10.46 μg/m3
Sulphur Dioxide: 3.07 μg/m3
Ozone: 93.72 μg/m3

Astronomical

Sunrise: 7:00 AM
Sun Transit: 1:35 PM
Sunset: 8:13 PM
Daylight: 13 hrs 13 mins
Moonrise: 9:04 AM
Moon Transit: 4:45 PM
Moonset: 12:18 AM
Moon Phase: Waxing Crescent
Moon Illumination: 10.8%

Best Times for Fishing or Hunting

Major Periods

4:30 AM - 7:00 AM
4:15 PM - 6:45 PM

Minor Periods

8:34 AM - 10:04 AM
12:00 AM - 12:00 AM

Action Rating: 3 out of 5

Tuesday, April 21, 2026

Weather Forecast

Sunny
78.9°F
48.7°F
64.4°F
34%
0 in
0%
0%
7.8 mph
8.5


Air Quality

AQI: 1 - Good
PM2.5: 9.32 μg/m3
PM10: 12.27 μg/m3
Carbon Monoxide: 201.93 μg/m3
Nitrogen Dioxide: 12.06 μg/m3
Sulphur Dioxide: 3.57 μg/m3
Ozone: 102.8 μg/m3

Astronomical

Sunrise: 6:59 AM
Sun Transit: 1:35 PM
Sunset: 8:13 PM
Daylight: 13 hrs 14 mins
Moonrise: 10:06 AM
Moon Transit: 5:50 PM
Moonset: 12:29 AM
Moon Phase: Waxing Crescent
Moon Illumination: 18.8%

Best Times for Fishing or Hunting

Major Periods

5:35 AM - 8:05 AM
5:20 PM - 7:50 PM

Minor Periods

9:36 AM - 11:06 AM
12:00 AM - 12:00 AM

Action Rating: 3 out of 5

Wednesday, April 22, 2026

Weather Forecast

Sunny
81.6°F
60.8°F
70.4°F
33%
0 in
0%
0%
8.5 mph
7.8


Air Quality

AQI: 1 - Good
PM2.5: 10.63 μg/m3
PM10: 16.01 μg/m3
Carbon Monoxide: 200.81 μg/m3
Nitrogen Dioxide: 12.85 μg/m3
Sulphur Dioxide: 4.37 μg/m3
Ozone: 107.16 μg/m3

Astronomical

Sunrise: 6:58 AM
Sun Transit: 1:35 PM
Sunset: 8:14 PM
Daylight: 13 hrs 16 mins
Moonrise: 11:15 AM
Moon Transit: 6:52 PM
Moonset: 1:31 AM
Moon Phase: Waxing Crescent
Moon Illumination: 28.4%

Best Times for Fishing or Hunting

Major Periods

6:39 AM - 9:09 AM
6:22 PM - 8:52 PM

Minor Periods

10:45 AM - 12:15 AM
1:01 AM - 2:31 AM

Action Rating: 3 out of 5

Thursday, April 23, 2026

Weather Forecast

Partly Cloudy
81.6°F
60.6°F
71.7°F
39%
0 in
0%
0%
7.4 mph
8.2


Air Quality

AQI: 1 - Good
PM2.5: 10.77 μg/m3
PM10: 17.68 μg/m3
Carbon Monoxide: 197.6 μg/m3
Nitrogen Dioxide: 14.16 μg/m3
Sulphur Dioxide: 4.11 μg/m3
Ozone: 116.44 μg/m3

Astronomical

Sunrise: 6:57 AM
Sun Transit: 1:35 PM
Sunset: 8:15 PM
Daylight: 13 hrs 18 mins
Moonrise: 12:26 AM
Moon Transit: 7:50 PM
Moonset: 2:24 AM
Moon Phase: First Quarter
Moon Illumination: 39.1%

Best Times for Fishing or Hunting

Major Periods

7:39 AM - 10:09 AM
7:20 PM - 9:50 PM

Minor Periods

11:56 AM - 1:26 PM
1:54 AM - 3:24 AM

Action Rating: 2 out of 5

Friday, April 24, 2026

Weather Forecast

Partly Cloudy
83.4°F
63.2°F
73.9°F
39%
0 in
0%
0%
7.8 mph
7.9


Air Quality

AQI: 1 - Good
PM2.5: 12 μg/m3
PM10: 14.95 μg/m3
Carbon Monoxide: 238.6 μg/m3
Nitrogen Dioxide: 15.12 μg/m3
Sulphur Dioxide: 4.46 μg/m3
Ozone: 92.85 μg/m3

Astronomical

Sunrise: 6:56 AM
Sun Transit: 1:35 PM
Sunset: 8:16 PM
Daylight: 13 hrs 20 mins
Moonrise: 1:35 PM
Moon Transit: 8:42 PM
Moonset: 3:06 AM
Moon Phase: First Quarter
Moon Illumination: 50.4%

Best Times for Fishing or Hunting

Major Periods

8:34 AM - 11:04 AM
8:12 PM - 10:42 PM

Minor Periods

1:05 PM - 2:35 PM
2:36 AM - 4:06 AM

Action Rating: 3 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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