Water Temperature of the Arkansas River in Portland, CO
Current Water Temperature
59.2°F
Measurement Time: Wednesday, September 17, 2025, 3:30 AM MDT
Temperature Locations
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Local Points of Interest
Florence, CO; Penrose, COSponsored Content
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
55.6°F

Conditions: Sunny
Humidity: 72%
Feels Like: 55.9°F
Wind: E 3.1 mph
Wind Gusts: 3.6 mph
Humidity: 72%
Feels Like: 55.9°F
Wind: E 3.1 mph
Wind Gusts: 3.6 mph
Pressure: 30.26 in
Precipitation: 0 in
Cloud Cover: 0%
Visibility: 9 mi
UV Index: 3.2
Precipitation: 0 in
Cloud Cover: 0%
Visibility: 9 mi
UV Index: 3.2
Five Day Weather Forecast

Wed
H: 74°F
L: 41°F

Thu
H: 71°F
L: 54°F

Fri
H: 77°F
L: 42°F

Sat
H: 83°F
L: 53°F

Sun
H: 81°F
L: 53°F
Air Quality
AQI:
1 - Good
PM2.5:
6.48 μg/m3
PM10:
10.73 μg/m3
Carbon Monoxide: 249.75 μg/m3
Nitrogen Dioxide: 1.85 μg/m3
Sulphur Dioxide: 1.85 μg/m3
Ozone: 126 μg/m3
Nitrogen Dioxide: 1.85 μg/m3
Sulphur Dioxide: 1.85 μg/m3
Ozone: 126 μg/m3
Astronomical
Sunrise: 6:44 AM
Sun Transit: 12:54 AM
Sunset: 7:04 PM
Daylight: 12 hrs 20 mins
Sun Transit: 12:54 AM
Sunset: 7:04 PM
Daylight: 12 hrs 20 mins
Moonrise: 2:13 AM
Moon Transit: 9:49 AM
Moonset: 5:14 PM
Moon Phase: Waning Crescent
Moon Illumination: 14.9%
Moon Transit: 9:49 AM
Moonset: 5:14 PM
Moon Phase: Waning Crescent
Moon Illumination: 14.9%
Best Times for Fishing or Hunting
Major Periods
7:40 PM - 10:10 PM9:19 AM - 11:49 AM
Minor Periods
4:44 PM - 6:14 PM1:43 AM - 3:13 AM
Action Rating: 2 out of 5
Wednesday, September 17, 2025
Weather Forecast
Conditions: Patchy rain nearby
Average Temperature: 60.1°F
Average Humidity: 69%
Average Temperature: 60.1°F
Average Humidity: 69%
Chance of Rain: 77%
Wind: 13.9 mph
UV Index: 1.7
Wind: 13.9 mph
UV Index: 1.7
Air Quality
AQI:
1 - Good
PM2.5:
5.12 μg/m3
PM10:
6.85 μg/m3
Carbon Monoxide: 250.34 μg/m3
Nitrogen Dioxide: 8.94 μg/m3
Sulphur Dioxide: 1.29 μg/m3
Ozone: 79.32 μg/m3
Nitrogen Dioxide: 8.94 μg/m3
Sulphur Dioxide: 1.29 μg/m3
Ozone: 79.32 μg/m3
Astronomical
Sunrise: 6:44 AM
Sun Transit: 12:54 AM
Sunset: 7:04 PM
Daylight: 12 hrs 20 mins
Sun Transit: 12:54 AM
Sunset: 7:04 PM
Daylight: 12 hrs 20 mins
Moonrise: 2:13 AM
Moon Transit: 9:49 AM
Moonset: 5:14 PM
Moon Phase: Waning Crescent
Moon Illumination: 14.9%
Moon Transit: 9:49 AM
Moonset: 5:14 PM
Moon Phase: Waning Crescent
Moon Illumination: 14.9%
Best Times for Fishing or Hunting
Major Periods
7:40 PM - 10:10 PM9:19 AM - 11:49 AM
Minor Periods
4:44 PM - 6:14 PM1:43 AM - 3:13 AM
Action Rating: 2 out of 5
Thursday, September 18, 2025
Weather Forecast
Conditions: Partly Cloudy
Average Temperature: 61.4°F
Average Humidity: 70%
Average Temperature: 61.4°F
Average Humidity: 70%
Chance of Rain: 0%
Wind: 11 mph
UV Index: 1.8
Wind: 11 mph
UV Index: 1.8
Air Quality
AQI:
1 - Good
PM2.5:
10.95 μg/m3
PM10:
12.62 μg/m3
Carbon Monoxide: 267.58 μg/m3
Nitrogen Dioxide: 7.68 μg/m3
Sulphur Dioxide: 2.64 μg/m3
Ozone: 108.2 μg/m3
Nitrogen Dioxide: 7.68 μg/m3
Sulphur Dioxide: 2.64 μg/m3
Ozone: 108.2 μg/m3
Astronomical
Sunrise: 6:45 AM
Sun Transit: 12:54 AM
Sunset: 7:03 PM
Daylight: 12 hrs 18 mins
Sun Transit: 12:54 AM
Sunset: 7:03 PM
Daylight: 12 hrs 18 mins
Moonrise: 3:22 AM
Moon Transit: 10:39 AM
Moonset: 5:44 PM
Moon Phase: Waning Crescent
Moon Illumination: 7.8%
Moon Transit: 10:39 AM
Moonset: 5:44 PM
Moon Phase: Waning Crescent
Moon Illumination: 7.8%
Best Times for Fishing or Hunting
Major Periods
8:28 PM - 10:58 PM10:09 AM - 12:39 AM
Minor Periods
5:14 PM - 6:44 PM2:52 AM - 4:22 AM
Action Rating: 3 out of 5
Friday, September 19, 2025
Weather Forecast
Conditions: Sunny
Average Temperature: 61.2°F
Average Humidity: 62%
Average Temperature: 61.2°F
Average Humidity: 62%
Chance of Rain: 0%
Wind: 9.2 mph
UV Index: 1.9
Wind: 9.2 mph
UV Index: 1.9
Air Quality
AQI:
1 - Good
PM2.5:
8.7 μg/m3
PM10:
9.93 μg/m3
Carbon Monoxide: 278.54 μg/m3
Nitrogen Dioxide: 9.91 μg/m3
Sulphur Dioxide: 2.15 μg/m3
Ozone: 97.32 μg/m3
Nitrogen Dioxide: 9.91 μg/m3
Sulphur Dioxide: 2.15 μg/m3
Ozone: 97.32 μg/m3
Astronomical
Sunrise: 6:46 AM
Sun Transit: 12:53 AM
Sunset: 7:01 PM
Daylight: 12 hrs 15 mins
Sun Transit: 12:53 AM
Sunset: 7:01 PM
Daylight: 12 hrs 15 mins
Moonrise: 4:30 AM
Moon Transit: 11:25 AM
Moonset: 6:10 PM
Moon Phase: Waning Crescent
Moon Illumination: 2.8%
Moon Transit: 11:25 AM
Moonset: 6:10 PM
Moon Phase: Waning Crescent
Moon Illumination: 2.8%
Best Times for Fishing or Hunting
Major Periods
9:13 PM - 11:43 PM10:55 AM - 1:25 PM
Minor Periods
5:40 PM - 7:10 PM4:00 AM - 5:30 AM
Action Rating: 3 out of 5
Saturday, September 20, 2025
Weather Forecast
Conditions: Patchy rain nearby
Average Temperature: 66.6°F
Average Humidity: 35%
Average Temperature: 66.6°F
Average Humidity: 35%
Chance of Rain: 81%
Wind: 8.9 mph
UV Index: 1.8
Wind: 8.9 mph
UV Index: 1.8
Air Quality
AQI:
1 - Good
PM2.5:
6.22 μg/m3
PM10:
9.24 μg/m3
Carbon Monoxide: 268.47 μg/m3
Nitrogen Dioxide: 9.89 μg/m3
Sulphur Dioxide: 1.69 μg/m3
Ozone: 88.36 μg/m3
Nitrogen Dioxide: 9.89 μg/m3
Sulphur Dioxide: 1.69 μg/m3
Ozone: 88.36 μg/m3
Astronomical
Sunrise: 6:47 AM
Sun Transit: 12:53 AM
Sunset: 7:00 PM
Daylight: 12 hrs 13 mins
Sun Transit: 12:53 AM
Sunset: 7:00 PM
Daylight: 12 hrs 13 mins
Moonrise: 5:34 AM
Moon Transit: 12:08 AM
Moonset: 6:32 PM
Moon Phase: Waning Crescent
Moon Illumination: 0.3%
Moon Transit: 12:08 AM
Moonset: 6:32 PM
Moon Phase: Waning Crescent
Moon Illumination: 0.3%
Best Times for Fishing or Hunting
Major Periods
12:00 AM - 12:00 AM11:38 AM - 2:08 PM
Minor Periods
6:02 PM - 7:32 PM5:04 AM - 6:34 AM
Action Rating: 3 out of 5
Sunday, September 21, 2025
Weather Forecast
Conditions: Patchy rain nearby
Average Temperature: 66.2°F
Average Humidity: 38%
Average Temperature: 66.2°F
Average Humidity: 38%
Chance of Rain: 86%
Wind: 8.9 mph
UV Index: 0
Wind: 8.9 mph
UV Index: 0
Air Quality
AQI:
1 - Good
PM2.5:
5.76 μg/m3
PM10:
7.36 μg/m3
Carbon Monoxide: 303.12 μg/m3
Nitrogen Dioxide: 17.66 μg/m3
Sulphur Dioxide: 1.34 μg/m3
Ozone: 64.08 μg/m3
Nitrogen Dioxide: 17.66 μg/m3
Sulphur Dioxide: 1.34 μg/m3
Ozone: 64.08 μg/m3
Astronomical
Sunrise: 6:47 AM
Sun Transit: 12:52 AM
Sunset: 6:58 PM
Daylight: 12 hrs 11 mins
Sun Transit: 12:52 AM
Sunset: 6:58 PM
Daylight: 12 hrs 11 mins
Moonrise: 6:36 AM
Moon Transit: 12:49 AM
Moonset: 6:53 PM
Moon Phase: New
Moon Illumination: 0.3%
Moon Transit: 12:49 AM
Moonset: 6:53 PM
Moon Phase: New
Moon Illumination: 0.3%
Best Times for Fishing or Hunting
Major Periods
12:00 AM - 12:00 AM12:19 AM - 2:49 PM
Minor Periods
6:23 PM - 7:53 PM6:06 AM - 7:36 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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