Water Temperature of the Arkansas River in Portland, CO

Current Water Temperature

75.6°F

Measurement Time: Sunday, September 6, 2026, 4:30 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

73°F

Conditions: Partly Cloudy

Humidity: 43%

Wind: NW 5 mph

Dew Point: 49°F

Weather Forecast

Tonight
65°F - Partly Cloudy

Labor Day
93°F - Mostly Sunny then Slight Chance Showers And Thunderstorms

Monday Night
62°F - Slight Chance Showers And Thunderstorms then Mostly Cloudy

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

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

Wednesday
88°F - Sunny then Slight Chance Showers And Thunderstorms

Wednesday Night
58°F - Slight Chance Showers And Thunderstorms then Partly Cloudy

Thursday
89°F - Sunny then Slight Chance Showers And Thunderstorms

Thursday Night
59°F - Slight Chance Showers And Thunderstorms then Mostly Clear

Friday
92°F - Sunny

Friday Night
60°F - Mostly Clear

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

Saturday Night
56°F - Chance Showers And Thunderstorms

Sunday
82°F - Slight Chance Rain Showers then Slight Chance Showers And Thunderstorms

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

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: 6:39 AM
Sun Transit: 12:56 AM
Sunset: 7:14 PM
Daylight: 12 hrs 35 mins

Moonrise: 7:12 AM
Moon Transit: 1:23 PM
Moonset: 7:25 PM
Moon Phase: New
Moon Illumination: 1.7%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
12:53 AM - 3:23 PM

Minor Periods

6:55 PM - 8:25 PM
6:42 AM - 8:12 AM

Action Rating: 5 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: 6:39 AM
Sun Transit: 12:56 AM
Sunset: 7:14 PM
Daylight: 12 hrs 35 mins

Moonrise: 7:12 AM
Moon Transit: 1:23 PM
Moonset: 7:25 PM
Moon Phase: New
Moon Illumination: 1.7%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
12:53 AM - 3:23 PM

Minor Periods

6:55 PM - 8:25 PM
6:42 AM - 8:12 AM

Action Rating: 5 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: 6:39 AM
Sun Transit: 12:56 AM
Sunset: 7:12 PM
Daylight: 12 hrs 33 mins

Moonrise: 8:19 AM
Moon Transit: 2:08 PM
Moonset: 7:49 PM
Moon Phase: New
Moon Illumination: 0.1%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
1:38 PM - 4:08 PM

Minor Periods

7:19 PM - 8:49 PM
7:49 AM - 9:19 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: 6:39 AM
Sun Transit: 12:56 AM
Sunset: 7:12 PM
Daylight: 12 hrs 33 mins

Moonrise: 8:19 AM
Moon Transit: 2:08 PM
Moonset: 7:49 PM
Moon Phase: New
Moon Illumination: 0.1%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
1:38 PM - 4:08 PM

Minor Periods

7:19 PM - 8:49 PM
7:49 AM - 9:19 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: 6:40 AM
Sun Transit: 12:55 AM
Sunset: 7:11 PM
Daylight: 12 hrs 31 mins

Moonrise: 9:24 AM
Moon Transit: 2:53 PM
Moonset: 8:15 PM
Moon Phase: New
Moon Illumination: 2.2%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
2:23 PM - 4:53 PM

Minor Periods

7:45 PM - 9:15 PM
8:54 AM - 10:24 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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