Water Temperature of the Arkansas River in Portland, CO

Current Water Temperature

62.6°F

Measurement Time: Tuesday, October 6, 2026, 6:30 AM MDT

Temperature Locations

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Local Points of Interest

Florence, CO; Penrose, CO

Arkansas River

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

Elevation Above Sea Level: 5,043 feet

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 mi)
South Platte River, Denver, CO (98.4 mi)

Weather for Portland, Colorado

Current Weather

78.6°F

Conditions: Overcast
Humidity: 18%
Feels Like: 73.9°F
Wind: SW 2.2 mph
Wind Gusts: 3 mph

Pressure: 29.93 in
Precipitation: 0 in
Cloud Cover: 100%
Visibility: 6 mi
UV Index: 5

Weather Forecast

Tue
H: 83°F
L: 59°F

Wed
H: 82°F
L: 58°F

Thu
H: 80°F
L: 56°F

Fri
H: 81°F
L: 56°F

Sat
H: 79°F
L: 55°F

Air Quality

AQI: 1 - Good

PM2.5: 1.1 μg/m3

PM10: 1.7 μg/m3

Carbon Monoxide: 117 μg/m3
Nitrogen Dioxide: 0.7 μg/m3
Sulphur Dioxide: 0.3 μg/m3
Ozone: 110 μg/m3

Astronomical

Sunrise: 7:01 AM
Sun Transit: 12:48 AM
Sunset: 6:35 PM
Daylight: 11 hrs 35 mins

Moonrise: 2:38 AM
Moon Transit: 9:43 AM
Moonset: 4:37 PM
Moon Phase: Waning Crescent
Moon Illumination: 14.1%

Best Times for Fishing or Hunting

Major Periods

7:33 PM - 10:03 PM
9:13 AM - 11:43 AM

Minor Periods

4:07 PM - 5:37 PM
2:08 AM - 3:38 AM

Action Rating: 2 out of 5

Tuesday, October 6, 2026

Weather Forecast

Conditions: Overcast
Average Temperature: 68.5°F
Average Humidity: 25%

Chance of Rain: 6%
Wind: 11.4 mph
UV Index: 5.6

Air Quality

AQI: 1 - Good

PM2.5: 1.99 μg/m3

PM10: 2.39 μg/m3

Carbon Monoxide: 128.75 μg/m3
Nitrogen Dioxide: 5.88 μg/m3
Sulphur Dioxide: 0.34 μg/m3
Ozone: 76.25 μg/m3

Astronomical

Sunrise: 7:01 AM
Sun Transit: 12:48 AM
Sunset: 6:35 PM
Daylight: 11 hrs 35 mins

Moonrise: 2:38 AM
Moon Transit: 9:43 AM
Moonset: 4:37 PM
Moon Phase: Waning Crescent
Moon Illumination: 14.1%

Best Times for Fishing or Hunting

Major Periods

7:33 PM - 10:03 PM
9:13 AM - 11:43 AM

Minor Periods

4:07 PM - 5:37 PM
2:08 AM - 3:38 AM

Action Rating: 2 out of 5

Wednesday, October 7, 2026

Weather Forecast

Conditions: Sunny
Average Temperature: 67.8°F
Average Humidity: 26%

Chance of Rain: 1%
Wind: 11.4 mph
UV Index: 6.2

Air Quality

AQI: 1 - Good

PM2.5: 2.01 μg/m3

PM10: 2.61 μg/m3

Carbon Monoxide: 129.92 μg/m3
Nitrogen Dioxide: 4.14 μg/m3
Sulphur Dioxide: 0.31 μg/m3
Ozone: 80.13 μg/m3

Astronomical

Sunrise: 7:02 AM
Sun Transit: 12:47 AM
Sunset: 6:34 PM
Daylight: 11 hrs 32 mins

Moonrise: 3:48 AM
Moon Transit: 10:31 AM
Moonset: 5:03 PM
Moon Phase: Waning Crescent
Moon Illumination: 7.2%

Best Times for Fishing or Hunting

Major Periods

8:20 PM - 10:50 PM
10:01 AM - 12:31 AM

Minor Periods

4:33 PM - 6:03 PM
3:18 AM - 4:48 AM

Action Rating: 2 out of 5

Thursday, October 8, 2026

Weather Forecast

Conditions: Sunny
Average Temperature: 66.4°F
Average Humidity: 30%

Chance of Rain: 1%
Wind: 11.2 mph
UV Index: 6.6

Air Quality

AQI: 1 - Good

PM2.5: 2.98 μg/m3

PM10: 3.91 μg/m3

Carbon Monoxide: 130.67 μg/m3
Nitrogen Dioxide: 5.34 μg/m3
Sulphur Dioxide: 0.3 μg/m3
Ozone: 76.92 μg/m3

Astronomical

Sunrise: 7:02 AM
Sun Transit: 12:47 AM
Sunset: 6:32 PM
Daylight: 11 hrs 30 mins

Moonrise: 4:56 AM
Moon Transit: 11:17 AM
Moonset: 5:27 PM
Moon Phase: Waning Crescent
Moon Illumination: 2.5%

Best Times for Fishing or Hunting

Major Periods

9:05 PM - 11:35 PM
10:47 AM - 1:17 PM

Minor Periods

4:57 PM - 6:27 PM
4:26 AM - 5:56 AM

Action Rating: 3 out of 5

Friday, October 9, 2026

Weather Forecast

Conditions: Sunny
Average Temperature: 67.3°F
Average Humidity: 27%

Chance of Rain: 0%
Wind: 12.1 mph
UV Index: 6.2

Air Quality

AQI: 1 - Good

PM2.5: 1.98 μg/m3

PM10: 2.34 μg/m3

Carbon Monoxide: 126.29 μg/m3
Nitrogen Dioxide: 5.65 μg/m3
Sulphur Dioxide: 0.28 μg/m3
Ozone: 63.83 μg/m3

Astronomical

Sunrise: 7:03 AM
Sun Transit: 12:47 AM
Sunset: 6:31 PM
Daylight: 11 hrs 27 mins

Moonrise: 6:02 AM
Moon Transit: 12:01 AM
Moonset: 5:51 PM
Moon Phase: Waning Crescent
Moon Illumination: 0.2%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
11:31 AM - 2:01 PM

Minor Periods

5:21 PM - 6:51 PM
5:32 AM - 7:02 AM

Action Rating: 4 out of 5

Saturday, October 10, 2026

Weather Forecast

Conditions: Sunny
Average Temperature: 65.8°F
Average Humidity: 29%

Chance of Rain: 1%
Wind: 13 mph
UV Index: 7

Air Quality

AQI: 1 - Good

PM2.5: 2.1 μg/m3

PM10: 2.19 μg/m3

Carbon Monoxide: 148 μg/m3
Nitrogen Dioxide: 8.5 μg/m3
Sulphur Dioxide: 0.3 μg/m3
Ozone: 40.14 μg/m3

Astronomical

Sunrise: 7:04 AM
Sun Transit: 12:47 AM
Sunset: 6:29 PM
Daylight: 11 hrs 25 mins

Moonrise: 7:08 AM
Moon Transit: 12:46 AM
Moonset: 6:16 PM
Moon Phase: New
Moon Illumination: 0.5%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
12:16 AM - 2:46 PM

Minor Periods

5:46 PM - 7:16 PM
6:38 AM - 8:08 AM

Action Rating: 4 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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