Water Temperature of the Arkansas River in Portland, CO

Current Water Temperature

65.5°F

Measurement Time: Friday, September 4, 2026, 2:30 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

77°F

Conditions: Sunny

Humidity: 27%

Wind: W 15 mph

Dew Point: 40°F

Weather Forecast

Today
92°F - Mostly Sunny then Slight Chance Showers And Thunderstorms

Tonight
61°F - Slight Chance Showers And Thunderstorms then Mostly Cloudy

Saturday
92°F - Mostly Sunny then Slight Chance Showers And Thunderstorms

Saturday Night
62°F - Slight Chance Showers And Thunderstorms then Partly Cloudy

Sunday
91°F - Mostly Sunny

Sunday Night
63°F - Partly Cloudy

Labor Day
92°F - Mostly Sunny then Slight Chance Showers And Thunderstorms

Monday Night
61°F - Slight Chance Showers And Thunderstorms then Mostly Cloudy

Tuesday
90°F - Sunny then Slight Chance Showers And Thunderstorms

Tuesday Night
60°F - Chance Showers And Thunderstorms then Partly Cloudy

Wednesday
91°F - Sunny then Slight Chance Showers And Thunderstorms

Wednesday Night
61°F - Slight Chance Showers And Thunderstorms then Partly Cloudy

Thursday
90°F - Sunny then Chance Showers And Thunderstorms

Thursday Night
60°F - Slight Chance Showers And Thunderstorms then Partly Cloudy

Astronomical

Sunrise: 6:33 AM
Sun Transit: 1:00 PM
Sunset: 7:25 PM
Daylight: 12 hrs 52 mins

Moonrise: 12:02 AM
Moon Transit: 6:56 AM
Moonset: 2:56 PM
Moon Phase: Last Quarter
Moon Illumination: 38.0%

Best Times for Fishing or Hunting

Major Periods

6:26 AM - 8:56 AM
4:52 PM - 7:22 PM

Minor Periods

2:26 PM - 3:56 PM
12:00 AM - 12:00 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: 6:33 AM
Sun Transit: 1:00 PM
Sunset: 7:25 PM
Daylight: 12 hrs 52 mins

Moonrise: 12:02 AM
Moon Transit: 6:56 AM
Moonset: 2:56 PM
Moon Phase: Last Quarter
Moon Illumination: 38.0%

Best Times for Fishing or Hunting

Major Periods

6:26 AM - 8:56 AM
4:52 PM - 7:22 PM

Minor Periods

2:26 PM - 3:56 PM
12:00 AM - 12:00 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: 6:33 AM
Sun Transit: 1:00 PM
Sunset: 7:25 PM
Daylight: 12 hrs 52 mins

Moonrise: 12:02 AM
Moon Transit: 6:56 AM
Moonset: 2:56 PM
Moon Phase: Last Quarter
Moon Illumination: 38.0%

Best Times for Fishing or Hunting

Major Periods

6:26 AM - 8:56 AM
4:52 PM - 7:22 PM

Minor Periods

2:26 PM - 3:56 PM
12:00 AM - 12:00 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: 6:33 AM
Sun Transit: 12:58 AM
Sunset: 7:23 PM
Daylight: 12 hrs 50 mins

Moonrise: 12:00 AM
Moon Transit: 8:00 AM
Moonset: 3:57 PM
Moon Phase: Last Quarter
Moon Illumination: 27.4%

Best Times for Fishing or Hunting

Major Periods

7:30 AM - 10:00 AM
5:55 PM - 8:25 PM

Minor Periods

3:27 PM - 4:57 PM
12:00 AM - 12:00 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: 6:33 AM
Sun Transit: 12:58 AM
Sunset: 7:23 PM
Daylight: 12 hrs 50 mins

Moonrise: 12:00 AM
Moon Transit: 8:00 AM
Moonset: 3:57 PM
Moon Phase: Last Quarter
Moon Illumination: 27.4%

Best Times for Fishing or Hunting

Major Periods

7:30 AM - 10:00 AM
5:55 PM - 8:25 PM

Minor Periods

3:27 PM - 4:57 PM
12:00 AM - 12:00 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: 6:34 AM
Sun Transit: 12:58 AM
Sunset: 7:22 PM
Daylight: 12 hrs 48 mins

Moonrise: 1:08 AM
Moon Transit: 9:02 AM
Moonset: 4:49 PM
Moon Phase: Last Quarter
Moon Illumination: 18.0%

Best Times for Fishing or Hunting

Major Periods

8:32 AM - 11:02 AM
6:57 PM - 9:27 PM

Minor Periods

4:19 PM - 5:49 PM
12:38 AM - 2:08 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: 6:34 AM
Sun Transit: 12:58 AM
Sunset: 7:22 PM
Daylight: 12 hrs 48 mins

Moonrise: 1:08 AM
Moon Transit: 9:02 AM
Moonset: 4:49 PM
Moon Phase: Last Quarter
Moon Illumination: 18.0%

Best Times for Fishing or Hunting

Major Periods

8:32 AM - 11:02 AM
6:57 PM - 9:27 PM

Minor Periods

4:19 PM - 5:49 PM
12:38 AM - 2:08 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: 6:35 AM
Sun Transit: 12:58 AM
Sunset: 7:20 PM
Daylight: 12 hrs 45 mins

Moonrise: 2:22 AM
Moon Transit: 10:02 AM
Moonset: 5:31 PM
Moon Phase: Waning Crescent
Moon Illumination: 10.1%

Best Times for Fishing or Hunting

Major Periods

7:55 PM - 10:25 PM
9:32 AM - 12:02 AM

Minor Periods

5:01 PM - 6:31 PM
1:52 AM - 3:22 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: 6:35 AM
Sun Transit: 12:58 AM
Sunset: 7:20 PM
Daylight: 12 hrs 45 mins

Moonrise: 2:22 AM
Moon Transit: 10:02 AM
Moonset: 5:31 PM
Moon Phase: Waning Crescent
Moon Illumination: 10.1%

Best Times for Fishing or Hunting

Major Periods

7:55 PM - 10:25 PM
9:32 AM - 12:02 AM

Minor Periods

5:01 PM - 6:31 PM
1:52 AM - 3:22 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: 6:36 AM
Sun Transit: 12:57 AM
Sunset: 7:19 PM
Daylight: 12 hrs 43 mins

Moonrise: 3:37 AM
Moon Transit: 10:57 AM
Moonset: 6:06 PM
Moon Phase: Waning Crescent
Moon Illumination: 4.4%

Best Times for Fishing or Hunting

Major Periods

8:49 PM - 11:19 PM
10:27 AM - 12:57 AM

Minor Periods

5:36 PM - 7:06 PM
3:07 AM - 4:37 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: 6:36 AM
Sun Transit: 12:57 AM
Sunset: 7:19 PM
Daylight: 12 hrs 43 mins

Moonrise: 3:37 AM
Moon Transit: 10:57 AM
Moonset: 6:06 PM
Moon Phase: Waning Crescent
Moon Illumination: 4.4%

Best Times for Fishing or Hunting

Major Periods

8:49 PM - 11:19 PM
10:27 AM - 12:57 AM

Minor Periods

5:36 PM - 7:06 PM
3:07 AM - 4:37 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: 6:37 AM
Sun Transit: 12:57 AM
Sunset: 7:17 PM
Daylight: 12 hrs 40 mins

Moonrise: 4:52 AM
Moon Transit: 11:49 AM
Moonset: 6:35 PM
Moon Phase: Waning Crescent
Moon Illumination: 0.9%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
11:19 AM - 1:49 PM

Minor Periods

6:05 PM - 7:35 PM
4:22 AM - 5:52 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: 6:37 AM
Sun Transit: 12:57 AM
Sunset: 7:17 PM
Daylight: 12 hrs 40 mins

Moonrise: 4:52 AM
Moon Transit: 11:49 AM
Moonset: 6:35 PM
Moon Phase: Waning Crescent
Moon Illumination: 0.9%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
11:19 AM - 1:49 PM

Minor Periods

6:05 PM - 7:35 PM
4:22 AM - 5:52 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: 6:38 AM
Sun Transit: 12:56 AM
Sunset: 7:16 PM
Daylight: 12 hrs 38 mins

Moonrise: 6:03 AM
Moon Transit: 12:37 AM
Moonset: 7:01 PM
Moon Phase: New
Moon Illumination: 0.0%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
12:07 AM - 2:37 PM

Minor Periods

6:31 PM - 8:01 PM
5:33 AM - 7:03 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: 6:38 AM
Sun Transit: 12:56 AM
Sunset: 7:16 PM
Daylight: 12 hrs 38 mins

Moonrise: 6:03 AM
Moon Transit: 12:37 AM
Moonset: 7:01 PM
Moon Phase: New
Moon Illumination: 0.0%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
12:07 AM - 2:37 PM

Minor Periods

6:31 PM - 8:01 PM
5:33 AM - 7:03 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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