Water Temperature of the Arkansas River in Portland, CO

Current Water Temperature

68.7°F

Measurement Time: Saturday, September 12, 2026, 7:30 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

62°F

Conditions: Mostly Clear

Humidity: 72%

Wind: W 5 mph

Dew Point: 53°F

Weather Forecast

Overnight
56°F - Mostly Clear

Sunday
94°F - Sunny

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

Monday
89°F - Slight Chance Rain Showers then Slight Chance Showers And Thunderstorms

Monday Night
58°F - Slight Chance Showers And Thunderstorms then Mostly Cloudy

Tuesday
75°F - Partly Sunny then Chance Showers And Thunderstorms

Tuesday Night
54°F - Chance Showers And Thunderstorms then Mostly Cloudy

Wednesday
82°F - Partly Sunny then Chance Showers And Thunderstorms

Wednesday Night
57°F - Chance Showers And Thunderstorms

Thursday
79°F - Partly Sunny then Chance Showers And Thunderstorms

Thursday Night
55°F - Chance Showers And Thunderstorms

Friday
80°F - Mostly Sunny then Slight Chance Showers And Thunderstorms

Friday Night
53°F - Chance Showers And Thunderstorms

Saturday
80°F - Sunny then Chance Showers And Thunderstorms

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

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

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

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

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: 6:41 AM
Sun Transit: 12:55 AM
Sunset: 7:09 PM
Daylight: 12 hrs 28 mins

Moonrise: 10:30 AM
Moon Transit: 3:39 PM
Moonset: 8:43 PM
Moon Phase: Waxing Crescent
Moon Illumination: 6.7%

Best Times for Fishing or Hunting

Major Periods

12:42 AM - 3:12 AM
3:09 PM - 5:39 PM

Minor Periods

8:13 PM - 9:43 PM
10:00 AM - 11:30 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: 6:41 AM
Sun Transit: 12:55 AM
Sunset: 7:09 PM
Daylight: 12 hrs 28 mins

Moonrise: 10:30 AM
Moon Transit: 3:39 PM
Moonset: 8:43 PM
Moon Phase: Waxing Crescent
Moon Illumination: 6.7%

Best Times for Fishing or Hunting

Major Periods

12:42 AM - 3:12 AM
3:09 PM - 5:39 PM

Minor Periods

8:13 PM - 9:43 PM
10:00 AM - 11:30 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: 6:42 AM
Sun Transit: 12:55 AM
Sunset: 7:08 PM
Daylight: 12 hrs 26 mins

Moonrise: 11:34 AM
Moon Transit: 4:27 PM
Moonset: 9:15 PM
Moon Phase: Waxing Crescent
Moon Illumination: 13.4%

Best Times for Fishing or Hunting

Major Periods

1:30 AM - 4:00 AM
3:57 PM - 6:27 PM

Minor Periods

8:45 PM - 10:15 PM
11:04 AM - 12:34 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: 6:42 AM
Sun Transit: 12:55 AM
Sunset: 7:08 PM
Daylight: 12 hrs 26 mins

Moonrise: 11:34 AM
Moon Transit: 4:27 PM
Moonset: 9:15 PM
Moon Phase: Waxing Crescent
Moon Illumination: 13.4%

Best Times for Fishing or Hunting

Major Periods

1:30 AM - 4:00 AM
3:57 PM - 6:27 PM

Minor Periods

8:45 PM - 10:15 PM
11:04 AM - 12:34 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: 6:43 AM
Sun Transit: 12:54 AM
Sunset: 7:06 PM
Daylight: 12 hrs 23 mins

Moonrise: 12:37 AM
Moon Transit: 5:17 PM
Moonset: 9:53 PM
Moon Phase: Waxing Crescent
Moon Illumination: 22.0%

Best Times for Fishing or Hunting

Major Periods

2:17 AM - 4:47 AM
4:47 PM - 7:17 PM

Minor Periods

9:23 PM - 10:53 PM
12:07 AM - 1:37 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: 6:43 AM
Sun Transit: 12:54 AM
Sunset: 7:06 PM
Daylight: 12 hrs 23 mins

Moonrise: 12:37 AM
Moon Transit: 5:17 PM
Moonset: 9:53 PM
Moon Phase: Waxing Crescent
Moon Illumination: 22.0%

Best Times for Fishing or Hunting

Major Periods

2:17 AM - 4:47 AM
4:47 PM - 7:17 PM

Minor Periods

9:23 PM - 10:53 PM
12:07 AM - 1:37 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: 6:44 AM
Sun Transit: 12:54 AM
Sunset: 7:05 PM
Daylight: 12 hrs 21 mins

Moonrise: 1:36 PM
Moon Transit: 6:07 PM
Moonset: 10:38 PM
Moon Phase: Waxing Crescent
Moon Illumination: 32.1%

Best Times for Fishing or Hunting

Major Periods

3:07 AM - 5:37 AM
5:37 PM - 8:07 PM

Minor Periods

10:08 PM - 11:38 PM
1:06 PM - 2:36 PM

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: 6:44 AM
Sun Transit: 12:54 AM
Sunset: 7:05 PM
Daylight: 12 hrs 21 mins

Moonrise: 1:36 PM
Moon Transit: 6:07 PM
Moonset: 10:38 PM
Moon Phase: Waxing Crescent
Moon Illumination: 32.1%

Best Times for Fishing or Hunting

Major Periods

3:07 AM - 5:37 AM
5:37 PM - 8:07 PM

Minor Periods

10:08 PM - 11:38 PM
1:06 PM - 2:36 PM

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: 6:45 AM
Sun Transit: 12:54 AM
Sunset: 7:03 PM
Daylight: 12 hrs 18 mins

Moonrise: 2:31 PM
Moon Transit: 7:00 PM
Moonset: 11:28 PM
Moon Phase: First Quarter
Moon Illumination: 43.0%

Best Times for Fishing or Hunting

Major Periods

3:59 AM - 6:29 AM
6:30 PM - 9:00 PM

Minor Periods

12:00 AM - 12:00 AM
2:01 PM - 3:31 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: 6:45 AM
Sun Transit: 12:54 AM
Sunset: 7:03 PM
Daylight: 12 hrs 18 mins

Moonrise: 2:31 PM
Moon Transit: 7:00 PM
Moonset: 11:28 PM
Moon Phase: First Quarter
Moon Illumination: 43.0%

Best Times for Fishing or Hunting

Major Periods

3:59 AM - 6:29 AM
6:30 PM - 9:00 PM

Minor Periods

12:00 AM - 12:00 AM
2:01 PM - 3:31 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: 6:46 AM
Sun Transit: 12:53 AM
Sunset: 7:02 PM
Daylight: 12 hrs 16 mins

Moonrise: 3:18 PM
Moon Transit: 7:50 PM
Moonset: 12:28 AM
Moon Phase: First Quarter
Moon Illumination: 54.3%

Best Times for Fishing or Hunting

Major Periods

4:50 AM - 7:20 AM
7:20 PM - 9:50 PM

Minor Periods

2:48 PM - 4:18 PM
12:00 AM - 12:00 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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