Water Temperature of the Arkansas River in Portland, CO

Current Water Temperature

65.5°F

Measurement Time: Tuesday, July 8, 2025, 11:30 PM MDT

Temperature Locations

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Local Points of Interest

Florence, CO; Penrose, CO

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Arkansas River

Station Name: ARKANSAS RIVER AT PORTLAND, CO.
Data Source: Water Data - usgc.gov

Elevation Above Sea Level: 5,043 feet / 1,537 meters

Nearest Address:
State Hwy 120
Portland, CO 81226
Fremont County

GPS Coordinates: 38.38833418, -105.0160961

Nearby Water Temperatures

Arkansas River, Cañon City, CO (13.4 mi)
Fountain Creek, Pueblo, CO (23.5 mi)
Fountain Creek, Fountain, CO (23.8 mi)
Arkansas River, Pueblo, CO (24.1 mi)
Arkansas River, Pueblo, CO (24.3 mi)
Arkansas River, Avondale, CO (34.8 mi)
Arkansas River, Manzanola, CO (62.6 mi)
South Platte River, Roxborough Park, CO (71.4 mi)
Arkansas River, Rocky Ford, CO (75.6 mi)
Arkansas River, Granite, CO (81.1 mi)
South Platte River, Englewood, CO (88.2 mi)
Halfmoon Creek, Twin Lakes, CO (91.7 mi)
Purgatoire River, Trinchera, CO (93.7 mi)
Purgatoire River, Kim, CO (94.0 mi)
South Platte River, Denver, CO (98.4 mi)

Weather for Portland, Colorado

Current Weather

59.9°F
Sunny
Conditions: Sunny
Humidity: 55%
Feels Like: 59.9°F
Wind: W 7.4 mph
Wind Gusts: 15.5 mph
Pressure: 30.24 in
Precipitation: 0 in
Cloud Cover: 0%
Visibility: 9 mi
UV Index: 0

Five Day Weather Forecast

Sunny
Wed
H: 97°F
L: 54°F
Sunny
Thu
H: 97°F
L: 60°F
Sunny
Fri
H: 86°F
L: 53°F
Moderate rain
Sat
H: 80°F
L: 51°F
Sunny
Sun
H: 86°F
L: 52°F

Air Quality

AQI: 1 - Good
PM2.5: 3.15 μg/m3
PM10: 7.03 μg/m3
Carbon Monoxide: 197.95 μg/m3
Nitrogen Dioxide: 0.93 μg/m3
Sulphur Dioxide: 1.11 μg/m3
Ozone: 128 μg/m3

Astronomical

Sunrise: 5:45 AM
Sun Transit: 1:05 PM
Sunset: 8:26 PM
Daylight: 14 hrs 42 mins
Moonrise: 8:08 PM
Moon Transit: 12:00 AM
Moonset: 4:10 AM
Moon Phase: Full
Moon Illumination: 99.6%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
9:35 AM - 12:05 AM

Minor Periods

7:38 PM - 9:08 PM
3:40 AM - 5:10 AM

Action Rating: 3 out of 5

Fire Weather Watch issued July 8 at 1:38PM MDT until July 10 at 9:00PM MDT by NWS Denver CO

Effective: Tue July 8, 2025, 1:38 PM
Expires: Wed July 9, 2025, 6:00 AM

The National Weather Service in Denver has issued a Fire Weather Watch for wind and low relative humidity, which is in effect from Thursday afternoon through Thursday evening. * AFFECTED AREA...Fire Weather Zone 214. * TIMING...Thursday from 12 PM to 9 PM. * WINDS...West 10 to 20 mph with gusts to 30 mph. * RELATIVE HUMIDITY...12 to 16%. * IMPACTS...Conditions will be favorable for rapid fire spread. Avoid outdoor burning and any activity that may produce a spark and start a wildfire.

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 July 8 at 1:38PM MDT until July 10 at 9:00PM MDT by NWS Denver CO

Effective: Tue July 8, 2025, 1:38 PM
Expires: Wed July 9, 2025, 6:00 AM

The National Weather Service in Denver has issued a Fire Weather Watch for wind and low relative humidity, which is in effect from Thursday afternoon through Thursday evening. * AFFECTED AREA...Fire Weather Zone 214. * TIMING...Thursday from 12 PM to 9 PM. * WINDS...West 10 to 20 mph with gusts to 30 mph. * RELATIVE HUMIDITY...12 to 16%. * IMPACTS...Conditions will be favorable for rapid fire spread. Avoid outdoor burning and any activity that may produce a spark and start a wildfire.

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 July 8 at 2:06PM MDT until July 10 at 9:00PM MDT by NWS Pueblo CO

Effective: Tue July 8, 2025, 2:06 PM
Expires: Wed July 9, 2025, 6:15 AM

The National Weather Service in Pueblo has issued a Fire Weather Watch for gusty winds and low relative humidity, which is in effect from Thursday afternoon through Thursday evening. * AFFECTED AREA...Fire Weather Zones 220, 223 and 224. * WINDS...West 10 to 20 mph with gusts up to 35 mph. * RELATIVE HUMIDITY...As low as 13 percent. * IMPACTS...Fires will catch and spread quickly. Exercise extreme caution with any outdoor burning.

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 July 8 at 2:06PM MDT until July 10 at 9:00PM MDT by NWS Pueblo CO

Effective: Tue July 8, 2025, 2:06 PM
Expires: Wed July 9, 2025, 6:15 AM

The National Weather Service in Pueblo has issued a Fire Weather Watch for gusty winds and low relative humidity, which is in effect from Thursday afternoon through Thursday evening. * AFFECTED AREA...Fire Weather Zones 220, 223 and 224. * WINDS...West 10 to 20 mph with gusts up to 35 mph. * RELATIVE HUMIDITY...As low as 13 percent. * IMPACTS...Fires will catch and spread quickly. Exercise extreme caution with any outdoor burning.

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 July 8 at 2:06PM MDT until July 10 at 9:00PM MDT by NWS Pueblo CO

Effective: Tue July 8, 2025, 2:06 PM
Expires: Wed July 9, 2025, 6:15 AM

The National Weather Service in Pueblo has issued a Fire Weather Watch for gusty winds and low relative humidity, which is in effect from Thursday afternoon through Thursday evening. * AFFECTED AREA...Fire Weather Zones 220, 223 and 224. * WINDS...West 10 to 20 mph with gusts up to 35 mph. * RELATIVE HUMIDITY...As low as 13 percent. * IMPACTS...Fires will catch and spread quickly. Exercise extreme caution with any outdoor burning.

A Fire Weather Watch means that critical fire weather conditions are forecast to occur. Listen for later forecasts and possible Red Flag Warnings.
Wednesday, July 9, 2025

Weather Forecast

Conditions: Sunny
Average Temperature: 77.3°F
Average Humidity: 27%
Chance of Rain: 0%
Wind: 8.5 mph
UV Index: 3.3

Air Quality

AQI: 1 - Good
PM2.5: 4.59 μg/m3
PM10: 7.41 μg/m3
Carbon Monoxide: 224.52 μg/m3
Nitrogen Dioxide: 9.57 μg/m3
Sulphur Dioxide: 1.51 μg/m3
Ozone: 99.32 μg/m3

Astronomical

Sunrise: 5:45 AM
Sun Transit: 1:05 PM
Sunset: 8:26 PM
Daylight: 14 hrs 42 mins
Moonrise: 8:08 PM
Moon Transit: 12:00 AM
Moonset: 4:10 AM
Moon Phase: Full
Moon Illumination: 99.6%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
9:35 AM - 12:05 AM

Minor Periods

7:38 PM - 9:08 PM
3:40 AM - 5:10 AM

Action Rating: 3 out of 5

Thursday, July 10, 2025

Weather Forecast

Conditions: Sunny
Average Temperature: 77.9°F
Average Humidity: 23%
Chance of Rain: 0%
Wind: 25.7 mph
UV Index: 2.9

Air Quality

AQI: 1 - Good
PM2.5: 4.65 μg/m3
PM10: 6.4 μg/m3
Carbon Monoxide: 206.46 μg/m3
Nitrogen Dioxide: 7.37 μg/m3
Sulphur Dioxide: 1.34 μg/m3
Ozone: 98.36 μg/m3

Astronomical

Sunrise: 5:45 AM
Sun Transit: 1:05 PM
Sunset: 8:26 PM
Daylight: 14 hrs 41 mins
Moonrise: 8:53 PM
Moon Transit: 12:37 AM
Moonset: 5:10 AM
Moon Phase: Full
Moon Illumination: 99.8%

Best Times for Fishing or Hunting

Major Periods

12:07 AM - 2:37 AM
10:30 AM - 1:00 PM

Minor Periods

8:23 PM - 9:53 PM
4:40 AM - 6:10 AM

Action Rating: 5 out of 5

Friday, July 11, 2025

Weather Forecast

Conditions: Sunny
Average Temperature: 70.1°F
Average Humidity: 44%
Chance of Rain: 0%
Wind: 15.9 mph
UV Index: 2.9

Air Quality

AQI: 1 - Good
PM2.5: 7.46 μg/m3
PM10: 10.08 μg/m3
Carbon Monoxide: 219.78 μg/m3
Nitrogen Dioxide: 8.62 μg/m3
Sulphur Dioxide: 2.18 μg/m3
Ozone: 104.48 μg/m3

Astronomical

Sunrise: 5:46 AM
Sun Transit: 1:05 PM
Sunset: 8:25 PM
Daylight: 14 hrs 39 mins
Moonrise: 9:31 PM
Moon Transit: 1:31 AM
Moonset: 6:16 AM
Moon Phase: Full
Moon Illumination: 97.4%

Best Times for Fishing or Hunting

Major Periods

1:01 AM - 3:31 AM
11:23 AM - 1:53 PM

Minor Periods

9:01 PM - 10:31 PM
5:46 AM - 7:16 AM

Action Rating: 4 out of 5

Saturday, July 12, 2025

Weather Forecast

Conditions: Moderate rain
Average Temperature: 62.5°F
Average Humidity: 67%
Chance of Rain: 86%
Wind: 18.1 mph
UV Index: 2.4

Air Quality

AQI: 1 - Good
PM2.5: 9.82 μg/m3
PM10: 14.78 μg/m3
Carbon Monoxide: 235.32 μg/m3
Nitrogen Dioxide: 8.42 μg/m3
Sulphur Dioxide: 2.04 μg/m3
Ozone: 103.28 μg/m3

Astronomical

Sunrise: 5:47 AM
Sun Transit: 1:05 PM
Sunset: 8:25 PM
Daylight: 14 hrs 38 mins
Moonrise: 10:03 PM
Moon Transit: 2:24 AM
Moonset: 7:24 AM
Moon Phase: Full
Moon Illumination: 92.7%

Best Times for Fishing or Hunting

Major Periods

1:54 AM - 4:24 AM
12:15 AM - 2:45 PM

Minor Periods

9:33 PM - 11:03 PM
6:54 AM - 8:24 AM

Action Rating: 3 out of 5

Sunday, July 13, 2025

Weather Forecast

Conditions: Sunny
Average Temperature: 69.2°F
Average Humidity: 44%
Chance of Rain: 0%
Wind: 16.8 mph
UV Index: 0

Air Quality

AQI: 1 - Good
PM2.5: 10.33 μg/m3
PM10: 14.79 μg/m3
Carbon Monoxide: 307.95 μg/m3
Nitrogen Dioxide: 13.35 μg/m3
Sulphur Dioxide: 2.18 μg/m3
Ozone: 85.54 μg/m3

Astronomical

Sunrise: 5:47 AM
Sun Transit: 1:05 PM
Sunset: 8:24 PM
Daylight: 14 hrs 37 mins
Moonrise: 10:31 PM
Moon Transit: 3:14 AM
Moonset: 8:34 AM
Moon Phase: Waning Gibbous
Moon Illumination: 85.7%

Best Times for Fishing or Hunting

Major Periods

2:44 AM - 5:14 AM
1:04 PM - 3:34 PM

Minor Periods

10:01 PM - 11:31 PM
8:04 AM - 9:34 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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