Water Temperature of the Arkansas River in Portland, CO

Current Water Temperature

64.0°F

Measurement Time: Friday, September 25, 2026, 5:30 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

64°F
Partly Sunny
Partly Sunny
75%
S 5 mph
56°F

Weather Forecast

Partly Sunny then Slight Chance Showers And Thunderstorms
Today
73°F - Partly Sunny then Slight Chance Showers And Thunderstorms
Slight Chance Showers And Thunderstorms then Mostly Clear
Tonight
50°F - Slight Chance Showers And Thunderstorms then Mostly Clear
Sunny
Saturday
81°F - Sunny
Mostly Clear
Saturday Night
52°F - Mostly Clear
Mostly Sunny
Sunday
82°F - Mostly Sunny
Mostly Cloudy
Sunday Night
55°F - Mostly Cloudy
Partly Sunny then Slight Chance Showers And Thunderstorms
Monday
78°F - Partly Sunny then Slight Chance Showers And Thunderstorms
Showers And Thunderstorms Likely
Monday Night
52°F - Showers And Thunderstorms Likely
Rain Showers Likely
Tuesday
69°F - Rain Showers Likely
Showers And Thunderstorms Likely
Tuesday Night
49°F - Showers And Thunderstorms Likely
Chance Rain Showers
Wednesday
73°F - Chance Rain Showers
Chance Showers And Thunderstorms
Wednesday Night
48°F - Chance Showers And Thunderstorms
Slight Chance Rain Showers then Slight Chance Showers And Thunderstorms
Thursday
74°F - Slight Chance Rain Showers then Slight Chance Showers And Thunderstorms
Mostly Clear
Thursday Night
48°F - Mostly Clear

Astronomical

Sunrise: 6:51 AM
Sun Transit: 12:51 AM
Sunset: 6:52 PM
Daylight: 12 hrs 1 mins
Moonrise: 6:18 PM
Moon Transit: 12:00 AM
Moonset: 5:42 AM
Moon Phase: Full
Moon Illumination: 99.6%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
12:00 AM - 12:00 AM

Minor Periods

5:48 PM - 7:18 PM
5:12 AM - 6:42 AM

Action Rating: 5 out of 5

Wednesday, December 31, 1969

Weather Forecast

°F
°F
°F
%
in
%
%
mph


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: 6:51 AM
Sun Transit: 12:51 AM
Sunset: 6:52 PM
Daylight: 12 hrs 1 mins
Moonrise: 6:18 PM
Moon Transit: 12:00 AM
Moonset: 5:42 AM
Moon Phase: Full
Moon Illumination: 99.6%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
12:00 AM - 12:00 AM

Minor Periods

5:48 PM - 7:18 PM
5:12 AM - 6:42 AM

Action Rating: 5 out of 5

Wednesday, December 31, 1969

Weather Forecast

°F
°F
°F
%
in
%
%
mph


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: 6:51 AM
Sun Transit: 12:51 AM
Sunset: 6:52 PM
Daylight: 12 hrs 1 mins
Moonrise: 6:18 PM
Moon Transit: 12:00 AM
Moonset: 5:42 AM
Moon Phase: Full
Moon Illumination: 99.6%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
12:00 AM - 12:00 AM

Minor Periods

5:48 PM - 7:18 PM
5:12 AM - 6:42 AM

Action Rating: 5 out of 5

Wednesday, December 31, 1969

Weather Forecast

°F
°F
°F
%
in
%
%
mph


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

°F
°F
°F
%
in
%
%
mph


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

°F
°F
°F
%
in
%
%
mph


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

°F
°F
°F
%
in
%
%
mph


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

°F
°F
°F
%
in
%
%
mph


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

°F
°F
°F
%
in
%
%
mph


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

°F
°F
°F
%
in
%
%
mph


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

°F
°F
°F
%
in
%
%
mph


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

°F
°F
°F
%
in
%
%
mph


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

°F
°F
°F
%
in
%
%
mph


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

°F
°F
°F
%
in
%
%
mph


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

°F
°F
°F
%
in
%
%
mph


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

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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