Water Temperature of the Arkansas River in Portland, CO

Current Water Temperature

73.8°F

Measurement Time: Thursday, July 9, 2026, 6:30 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

94.1°F
Sunny
Sunny
81.3°F
90.7°F
13%
SSE 9.8 mph
11.3 mph
94.1°F
36.3°F
0 in
16%
6 mi
1007 mbar
10.6

Five Day Weather Forecast

Sunny
Thu
H: 94°F
L: 57°F
Smoky haze
Fri
H: 92°F
L: 56°F
Smoky haze
Sat
H: 93°F
L: 55°F
Smoky haze
Sun
H: 92°F
L: 59°F
Sunny
Mon
H: 94°F
L: 58°F

Air Quality

AQI: 2 - Moderate
PM2.5: 8.9 μg/m3
PM10: 10.9 μg/m3
Carbon Monoxide: 321 μg/m3
Nitrogen Dioxide: 0.9 μg/m3
Sulphur Dioxide: 0.5 μg/m3
Ozone: 122 μg/m3

Astronomical

Sunrise: 5:44 AM
Sun Transit: 1:05 PM
Sunset: 8:26 PM
Daylight: 14 hrs 42 mins
Moonrise: 1:01 AM
Moon Transit: 8:15 AM
Moonset: 3:42 PM
Moon Phase: Last Quarter
Moon Illumination: 17.4%

Best Times for Fishing or Hunting

Major Periods

7:45 AM - 10:15 AM
6:08 PM - 8:38 PM

Minor Periods

3:12 PM - 4:42 PM
12:31 AM - 2:01 AM

Action Rating: 3 out of 5

Flash Flood Watch issued July 9 at 3:07AM MDT until July 9 at 8:00PM MDT by NWS Pueblo CO

Effective: Thu July 9, 2026, 3:07 AM
Expires: Thu July 9, 2026, 11:15 AM

* WHAT...Flash flooding and debris flows caused by excessive rainfall will be possible over the Aspen Acres burn scar again today. * WHERE...A portion of southeast Colorado, including southwestern Pueblo County. * WHEN...From noon MDT today through 8 PM this evening. * IMPACTS...Heavy rainfall over the Aspen Acres burn scar will be possible during the period of the watch. Residents near the Aspen Acres burn scar should prepare for potential debris flows. Be sure to stay up to date with information from local authorities. Heavy rainfall could trigger flash flooding of low-lying areas, urbanized street flooding, and debris flows in and near recent wildfire burn scars. * ADDITIONAL DETAILS... - National Weather Service Meteorologists are forecasting the potential for heavy rainfall over the burn scar, which may lead to flash flooding and debris flows. - http://www.weather.gov/safety/flood

You should monitor later forecasts and be prepared to take action should Flash Flood Warnings be issued.


Flash Flood Watch issued July 9 at 3:07AM MDT until July 9 at 8:00PM MDT by NWS Pueblo CO

Effective: Thu July 9, 2026, 3:07 AM
Expires: Thu July 9, 2026, 11:15 AM

* WHAT...Flash flooding and debris flows caused by excessive rainfall will be possible over the Aspen Acres burn scar again today. * WHERE...A portion of southeast Colorado, including the Wet Mountains. * WHEN...From noon MDT today through 8 PM this evening. * IMPACTS...Heavy rainfall over the Aspen Acres burn scar will be possible during the period of the watch. Residents near the Aspen Acres burn scar should prepare for potential debris flow. Be sure to stay up to date with information from local authorities. Heavy rainfall could trigger flash flooding of low-lying areas, and debris flows in and near recent wildfire burn scars. * ADDITIONAL DETAILS... - National Weather Service Meteorologists are forecasting heavy rainfall which could impact the burn scar, leading to flash flooding and debris flows. - Some locations that may experience flash flooding include... Rye, San Isabel, Beulah, and Colorado City. - http://www.weather.gov/safety/flood

You should monitor later forecasts and be prepared to take action should Flash Flood Warnings be issued.
Thursday, July 9, 2026

Weather Forecast

Sunny
94.4°F
56.5°F
72.9°F
37%
0.01 in
17%
0%
17.4 mph
11.1


Air Quality

AQI: 2 - Moderate
PM2.5: 29.4 μg/m3
PM10: 32.16 μg/m3
Carbon Monoxide: 483.54 μg/m3
Nitrogen Dioxide: 10.33 μg/m3
Sulphur Dioxide: 1.34 μg/m3
Ozone: 96.71 μg/m3

Astronomical

Sunrise: 5:44 AM
Sun Transit: 1:05 PM
Sunset: 8:26 PM
Daylight: 14 hrs 42 mins
Moonrise: 1:01 AM
Moon Transit: 8:15 AM
Moonset: 3:42 PM
Moon Phase: Last Quarter
Moon Illumination: 17.4%

Best Times for Fishing or Hunting

Major Periods

7:45 AM - 10:15 AM
6:08 PM - 8:38 PM

Minor Periods

3:12 PM - 4:42 PM
12:31 AM - 2:01 AM

Action Rating: 3 out of 5

Friday, July 10, 2026

Weather Forecast

Smoky haze
92.2°F
55.5°F
72.8°F
38%
0.04 in
36%
0%
19.2 mph
10.9


Air Quality

AQI: 3 - Unhealthy for Sensitive Groups
PM2.5: 49.28 μg/m3
PM10: 53.05 μg/m3
Carbon Monoxide: 290.17 μg/m3
Nitrogen Dioxide: 13.41 μg/m3
Sulphur Dioxide: 2 μg/m3
Ozone: 112.96 μg/m3

Astronomical

Sunrise: 5:45 AM
Sun Transit: 1:05 PM
Sunset: 8:26 PM
Daylight: 14 hrs 41 mins
Moonrise: 1:37 AM
Moon Transit: 9:12 AM
Moonset: 4:59 PM
Moon Phase: Waning Crescent
Moon Illumination: 9.7%

Best Times for Fishing or Hunting

Major Periods

8:42 AM - 11:12 AM
7:08 PM - 9:38 PM

Minor Periods

4:29 PM - 5:59 PM
1:07 AM - 2:37 AM

Action Rating: 2 out of 5

Saturday, July 11, 2026

Weather Forecast

Smoky haze
93.3°F
54.9°F
74.8°F
40%
0 in
1%
0%
19.5 mph
11.8


Air Quality

AQI: 3 - Unhealthy for Sensitive Groups
PM2.5: 50.95 μg/m3
PM10: 55 μg/m3
Carbon Monoxide: 169.63 μg/m3
Nitrogen Dioxide: 10.56 μg/m3
Sulphur Dioxide: 1.88 μg/m3
Ozone: 127 μg/m3

Astronomical

Sunrise: 5:46 AM
Sun Transit: 1:05 PM
Sunset: 8:25 PM
Daylight: 14 hrs 40 mins
Moonrise: 2:24 AM
Moon Transit: 10:15 AM
Moonset: 6:14 PM
Moon Phase: Waning Crescent
Moon Illumination: 4.1%

Best Times for Fishing or Hunting

Major Periods

8:12 PM - 10:42 PM
9:45 AM - 12:15 AM

Minor Periods

5:44 PM - 7:14 PM
1:54 AM - 3:24 AM

Action Rating: 3 out of 5

Sunday, July 12, 2026

Weather Forecast

Smoky haze
92.4°F
59.1°F
76.3°F
36%
0 in
1%
0%
17.9 mph
12.3


Air Quality

AQI: 2 - Moderate
PM2.5: 36.28 μg/m3
PM10: 40.28 μg/m3
Carbon Monoxide: 157.53 μg/m3
Nitrogen Dioxide: 10.12 μg/m3
Sulphur Dioxide: 1.62 μg/m3
Ozone: 112.5 μg/m3

Astronomical

Sunrise: 5:46 AM
Sun Transit: 1:05 PM
Sunset: 8:25 PM
Daylight: 14 hrs 39 mins
Moonrise: 3:22 AM
Moon Transit: 11:22 AM
Moonset: 7:21 PM
Moon Phase: Waning Crescent
Moon Illumination: 0.8%

Best Times for Fishing or Hunting

Major Periods

9:20 PM - 11:50 PM
10:52 AM - 1:22 PM

Minor Periods

6:51 PM - 8:21 PM
2:52 AM - 4:22 AM

Action Rating: 3 out of 5

Monday, July 13, 2026

Weather Forecast

Sunny
93.9°F
57.8°F
76°F
35%
0 in
1%
0%
17.7 mph
8


Air Quality

AQI: 2 - Moderate
PM2.5: 34.09 μg/m3
PM10: 41.83 μg/m3
Carbon Monoxide: 392.71 μg/m3
Nitrogen Dioxide: 15.34 μg/m3
Sulphur Dioxide: 1.74 μg/m3
Ozone: 58.43 μg/m3

Astronomical

Sunrise: 5:47 AM
Sun Transit: 1:05 PM
Sunset: 8:25 PM
Daylight: 14 hrs 37 mins
Moonrise: 4:32 AM
Moon Transit: 12:28 AM
Moonset: 8:19 PM
Moon Phase: New
Moon Illumination: 0.1%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
11:58 AM - 2:28 PM

Minor Periods

7:49 PM - 9:19 PM
4:02 AM - 5:32 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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