Water Temperature of the Arkansas River in Portland, CO

Current Water Temperature

32.0°F

Measurement Time: Friday, September 25, 2026, 6:55 PM 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

58°F

Conditions: Mostly Clear

Humidity: 75%

Wind: W 10 mph

Dew Point: 50°F

Weather Forecast

Overnight
50°F - Mostly Clear

Saturday
82°F - Sunny

Saturday Night
52°F - Mostly Clear

Sunday
81°F - Mostly Sunny

Sunday Night
54°F - Mostly Cloudy

Monday
77°F - Partly Sunny then Slight Chance Showers And Thunderstorms

Monday Night
53°F - Showers And Thunderstorms Likely

Tuesday
69°F - Showers And Thunderstorms

Tuesday Night
50°F - Showers And Thunderstorms

Wednesday
71°F - Showers And Thunderstorms Likely then Chance Showers And Thunderstorms

Wednesday Night
50°F - Chance Showers And Thunderstorms

Thursday
74°F - Slight Chance Rain Showers then Slight Chance Showers And Thunderstorms

Thursday Night
49°F - Mostly Clear

Friday
79°F - Sunny

Astronomical

Sunrise: 6:52 AM
Sun Transit: 12:51 AM
Sunset: 6:51 PM
Daylight: 11 hrs 59 mins

Moonrise: 6:42 PM
Moon Transit: 6:33 AM
Moonset: 6:48 AM
Moon Phase: Full
Moon Illumination: 99.7%

Best Times for Fishing or Hunting

Major Periods

6:03 AM - 8:33 AM
6:03 AM - 8:33 AM

Minor Periods

6:12 PM - 7:42 PM
6:18 AM - 7:48 AM

Action Rating: 3 out of 5

Wednesday, December 31, 1969

Weather Forecast

Conditions:

High Temperature: °F

Low Temperature: °F

Average Temperature: °F

Average Humidity: %

Precipitation: in

Chance of Rain: %

Chance of Snow: %

Maximum Wind: mph

UV Index:

Air Quality

AQI: 0 -

PM2.5: 0 μg/m3

PM10: 0 μg/m3

Carbon Monoxide: 0 μg/m3
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3

Astronomical

Sunrise: 6:52 AM
Sun Transit: 12:51 AM
Sunset: 6:51 PM
Daylight: 11 hrs 59 mins

Moonrise: 6:42 PM
Moon Transit: 6:33 AM
Moonset: 6:48 AM
Moon Phase: Full
Moon Illumination: 99.7%

Best Times for Fishing or Hunting

Major Periods

6:03 AM - 8:33 AM
6:03 AM - 8:33 AM

Minor Periods

6:12 PM - 7:42 PM
6:18 AM - 7:48 AM

Action Rating: 3 out of 5

Wednesday, December 31, 1969

Weather Forecast

Conditions:

High Temperature: °F

Low Temperature: °F

Average Temperature: °F

Average Humidity: %

Precipitation: in

Chance of Rain: %

Chance of Snow: %

Maximum Wind: mph

UV Index:

Air Quality

AQI: 0 -

PM2.5: 0 μg/m3

PM10: 0 μg/m3

Carbon Monoxide: 0 μg/m3
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3

Astronomical

Sunrise: 6:52 AM
Sun Transit: 12:51 AM
Sunset: 6:51 PM
Daylight: 11 hrs 59 mins

Moonrise: 6:42 PM
Moon Transit: 6:33 AM
Moonset: 6:48 AM
Moon Phase: Full
Moon Illumination: 99.7%

Best Times for Fishing or Hunting

Major Periods

6:03 AM - 8:33 AM
6:03 AM - 8:33 AM

Minor Periods

6:12 PM - 7:42 PM
6:18 AM - 7:48 AM

Action Rating: 3 out of 5

Wednesday, December 31, 1969

Weather Forecast

Conditions:

High Temperature: °F

Low Temperature: °F

Average Temperature: °F

Average Humidity: %

Precipitation: in

Chance of Rain: %

Chance of Snow: %

Maximum Wind: mph

UV Index:

Air Quality

AQI: 0 -

PM2.5: 0 μg/m3

PM10: 0 μg/m3

Carbon Monoxide: 0 μg/m3
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3

Astronomical

Sunrise: 6:52 AM
Sun Transit: 12:51 AM
Sunset: 6:51 PM
Daylight: 11 hrs 59 mins

Moonrise: 6:42 PM
Moon Transit: 6:33 AM
Moonset: 6:48 AM
Moon Phase: Full
Moon Illumination: 99.7%

Best Times for Fishing or Hunting

Major Periods

6:03 AM - 8:33 AM
6:03 AM - 8:33 AM

Minor Periods

6:12 PM - 7:42 PM
6:18 AM - 7:48 AM

Action Rating: 3 out of 5

Wednesday, December 31, 1969

Weather Forecast

Conditions:

High Temperature: °F

Low Temperature: °F

Average Temperature: °F

Average Humidity: %

Precipitation: in

Chance of Rain: %

Chance of Snow: %

Maximum Wind: mph

UV Index:

Air Quality

AQI: 0 -

PM2.5: 0 μg/m3

PM10: 0 μg/m3

Carbon Monoxide: 0 μg/m3
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3

Astronomical

Sunrise: 6:53 AM
Sun Transit: 12:50 AM
Sunset: 6:49 PM
Daylight: 11 hrs 57 mins

Moonrise: 7:09 PM
Moon Transit: 1:13 AM
Moonset: 7:56 AM
Moon Phase: Full
Moon Illumination: 97.3%

Best Times for Fishing or Hunting

Major Periods

12:43 AM - 3:13 AM
11:03 AM - 1:33 PM

Minor Periods

6:39 PM - 8:09 PM
7:26 AM - 8:56 AM

Action Rating: 4 out of 5

Wednesday, December 31, 1969

Weather Forecast

Conditions:

High Temperature: °F

Low Temperature: °F

Average Temperature: °F

Average Humidity: %

Precipitation: in

Chance of Rain: %

Chance of Snow: %

Maximum Wind: mph

UV Index:

Air Quality

AQI: 0 -

PM2.5: 0 μg/m3

PM10: 0 μg/m3

Carbon Monoxide: 0 μg/m3
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3

Astronomical

Sunrise: 6:53 AM
Sun Transit: 12:50 AM
Sunset: 6:49 PM
Daylight: 11 hrs 57 mins

Moonrise: 7:09 PM
Moon Transit: 1:13 AM
Moonset: 7:56 AM
Moon Phase: Full
Moon Illumination: 97.3%

Best Times for Fishing or Hunting

Major Periods

12:43 AM - 3:13 AM
11:03 AM - 1:33 PM

Minor Periods

6:39 PM - 8:09 PM
7:26 AM - 8:56 AM

Action Rating: 4 out of 5

Wednesday, December 31, 1969

Weather Forecast

Conditions:

High Temperature: °F

Low Temperature: °F

Average Temperature: °F

Average Humidity: %

Precipitation: in

Chance of Rain: %

Chance of Snow: %

Maximum Wind: mph

UV Index:

Air Quality

AQI: 0 -

PM2.5: 0 μg/m3

PM10: 0 μg/m3

Carbon Monoxide: 0 μg/m3
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3

Astronomical

Sunrise: 6:53 AM
Sun Transit: 12:50 AM
Sunset: 6:48 PM
Daylight: 11 hrs 54 mins

Moonrise: 7:39 PM
Moon Transit: 2:01 AM
Moonset: 9:07 AM
Moon Phase: Full
Moon Illumination: 92.4%

Best Times for Fishing or Hunting

Major Periods

1:31 AM - 4:01 AM
11:53 AM - 2:23 PM

Minor Periods

7:09 PM - 8:39 PM
8:37 AM - 10:07 AM

Action Rating: 4 out of 5

Wednesday, December 31, 1969

Weather Forecast

Conditions:

High Temperature: °F

Low Temperature: °F

Average Temperature: °F

Average Humidity: %

Precipitation: in

Chance of Rain: %

Chance of Snow: %

Maximum Wind: mph

UV Index:

Air Quality

AQI: 0 -

PM2.5: 0 μg/m3

PM10: 0 μg/m3

Carbon Monoxide: 0 μg/m3
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3

Astronomical

Sunrise: 6:53 AM
Sun Transit: 12:50 AM
Sunset: 6:48 PM
Daylight: 11 hrs 54 mins

Moonrise: 7:39 PM
Moon Transit: 2:01 AM
Moonset: 9:07 AM
Moon Phase: Full
Moon Illumination: 92.4%

Best Times for Fishing or Hunting

Major Periods

1:31 AM - 4:01 AM
11:53 AM - 2:23 PM

Minor Periods

7:09 PM - 8:39 PM
8:37 AM - 10:07 AM

Action Rating: 4 out of 5

Wednesday, December 31, 1969

Weather Forecast

Conditions:

High Temperature: °F

Low Temperature: °F

Average Temperature: °F

Average Humidity: %

Precipitation: in

Chance of Rain: %

Chance of Snow: %

Maximum Wind: mph

UV Index:

Air Quality

AQI: 0 -

PM2.5: 0 μg/m3

PM10: 0 μg/m3

Carbon Monoxide: 0 μg/m3
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3

Astronomical

Sunrise: 6:54 AM
Sun Transit: 12:50 AM
Sunset: 6:46 PM
Daylight: 11 hrs 52 mins

Moonrise: 8:16 PM
Moon Transit: 2:54 AM
Moonset: 10:21 AM
Moon Phase: Waning Gibbous
Moon Illumination: 85.4%

Best Times for Fishing or Hunting

Major Periods

2:24 AM - 4:54 AM
12:47 AM - 3:17 PM

Minor Periods

7:46 PM - 9:16 PM
9:51 AM - 11:21 AM

Action Rating: 2 out of 5

Wednesday, December 31, 1969

Weather Forecast

Conditions:

High Temperature: °F

Low Temperature: °F

Average Temperature: °F

Average Humidity: %

Precipitation: in

Chance of Rain: %

Chance of Snow: %

Maximum Wind: mph

UV Index:

Air Quality

AQI: 0 -

PM2.5: 0 μg/m3

PM10: 0 μg/m3

Carbon Monoxide: 0 μg/m3
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3

Astronomical

Sunrise: 6:54 AM
Sun Transit: 12:50 AM
Sunset: 6:46 PM
Daylight: 11 hrs 52 mins

Moonrise: 8:16 PM
Moon Transit: 2:54 AM
Moonset: 10:21 AM
Moon Phase: Waning Gibbous
Moon Illumination: 85.4%

Best Times for Fishing or Hunting

Major Periods

2:24 AM - 4:54 AM
12:47 AM - 3:17 PM

Minor Periods

7:46 PM - 9:16 PM
9:51 AM - 11:21 AM

Action Rating: 2 out of 5

Wednesday, December 31, 1969

Weather Forecast

Conditions:

High Temperature: °F

Low Temperature: °F

Average Temperature: °F

Average Humidity: %

Precipitation: in

Chance of Rain: %

Chance of Snow: %

Maximum Wind: mph

UV Index:

Air Quality

AQI: 0 -

PM2.5: 0 μg/m3

PM10: 0 μg/m3

Carbon Monoxide: 0 μg/m3
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3

Astronomical

Sunrise: 6:55 AM
Sun Transit: 12:49 AM
Sunset: 6:44 PM
Daylight: 11 hrs 49 mins

Moonrise: 9:00 PM
Moon Transit: 3:50 AM
Moonset: 11:36 AM
Moon Phase: Waning Gibbous
Moon Illumination: 76.5%

Best Times for Fishing or Hunting

Major Periods

3:20 AM - 5:50 AM
1:45 PM - 4:15 PM

Minor Periods

8:30 PM - 10:00 PM
11:06 AM - 12:36 AM

Action Rating: 2 out of 5

Wednesday, December 31, 1969

Weather Forecast

Conditions:

High Temperature: °F

Low Temperature: °F

Average Temperature: °F

Average Humidity: %

Precipitation: in

Chance of Rain: %

Chance of Snow: %

Maximum Wind: mph

UV Index:

Air Quality

AQI: 0 -

PM2.5: 0 μg/m3

PM10: 0 μg/m3

Carbon Monoxide: 0 μg/m3
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3

Astronomical

Sunrise: 6:55 AM
Sun Transit: 12:49 AM
Sunset: 6:44 PM
Daylight: 11 hrs 49 mins

Moonrise: 9:00 PM
Moon Transit: 3:50 AM
Moonset: 11:36 AM
Moon Phase: Waning Gibbous
Moon Illumination: 76.5%

Best Times for Fishing or Hunting

Major Periods

3:20 AM - 5:50 AM
1:45 PM - 4:15 PM

Minor Periods

8:30 PM - 10:00 PM
11:06 AM - 12:36 AM

Action Rating: 2 out of 5

Wednesday, December 31, 1969

Weather Forecast

Conditions:

High Temperature: °F

Low Temperature: °F

Average Temperature: °F

Average Humidity: %

Precipitation: in

Chance of Rain: %

Chance of Snow: %

Maximum Wind: mph

UV Index:

Air Quality

AQI: 0 -

PM2.5: 0 μg/m3

PM10: 0 μg/m3

Carbon Monoxide: 0 μg/m3
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3

Astronomical

Sunrise: 6:56 AM
Sun Transit: 12:49 AM
Sunset: 6:43 PM
Daylight: 11 hrs 47 mins

Moonrise: 9:55 PM
Moon Transit: 4:51 AM
Moonset: 12:48 AM
Moon Phase: Waning Gibbous
Moon Illumination: 66.3%

Best Times for Fishing or Hunting

Major Periods

4:21 AM - 6:51 AM
2:46 PM - 5:16 PM

Minor Periods

9:25 PM - 10:55 PM
12:18 AM - 1:48 PM

Action Rating: 3 out of 5

Wednesday, December 31, 1969

Weather Forecast

Conditions:

High Temperature: °F

Low Temperature: °F

Average Temperature: °F

Average Humidity: %

Precipitation: in

Chance of Rain: %

Chance of Snow: %

Maximum Wind: mph

UV Index:

Air Quality

AQI: 0 -

PM2.5: 0 μg/m3

PM10: 0 μg/m3

Carbon Monoxide: 0 μg/m3
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3

Astronomical

Sunrise: 6:56 AM
Sun Transit: 12:49 AM
Sunset: 6:43 PM
Daylight: 11 hrs 47 mins

Moonrise: 9:55 PM
Moon Transit: 4:51 AM
Moonset: 12:48 AM
Moon Phase: Waning Gibbous
Moon Illumination: 66.3%

Best Times for Fishing or Hunting

Major Periods

4:21 AM - 6:51 AM
2:46 PM - 5:16 PM

Minor Periods

9:25 PM - 10:55 PM
12:18 AM - 1:48 PM

Action Rating: 3 out of 5

Wednesday, December 31, 1969

Weather Forecast

Conditions:

High Temperature: °F

Low Temperature: °F

Average Temperature: °F

Average Humidity: %

Precipitation: in

Chance of Rain: %

Chance of Snow: %

Maximum Wind: mph

UV Index:

Air Quality

AQI: 0 -

PM2.5: 0 μg/m3

PM10: 0 μg/m3

Carbon Monoxide: 0 μg/m3
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3

Astronomical

Sunrise: 6:57 AM
Sun Transit: 12:49 AM
Sunset: 6:41 PM
Daylight: 11 hrs 44 mins

Moonrise: 11:00 PM
Moon Transit: 5:53 AM
Moonset: 1:52 PM
Moon Phase: Last Quarter
Moon Illumination: 55.3%

Best Times for Fishing or Hunting

Major Periods

5:23 AM - 7:53 AM
3:49 PM - 6:19 PM

Minor Periods

10:30 PM - 12:00 PM
1:22 PM - 2:52 PM

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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