Water Temperature of the Arkansas River in Portland, CO

Current Water Temperature

71.4°F

Measurement Time: Wednesday, July 29, 2026, 12:30 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

65°F
Sunny
Sunny
65°F
65.8°F
88%
W 3.6 mph
6.8 mph
65.8°F
52.4°F
0 in
0%
10 mi
842 mbar
0.3

Five Day Weather Forecast

Sunny
Wed
H: 93°F
L: 61°F
Sunny
Thu
H: 94°F
L: 62°F
Sunny
Fri
H: 96°F
L: 64°F
Sunny
Sat
H: 92°F
L: 60°F
Sunny
Sun
H: 96°F
L: 62°F

Air Quality

AQI: 1 - Good
PM2.5: 4.7 μg/m3
PM10: 4.8 μg/m3
Carbon Monoxide: 117 μg/m3
Nitrogen Dioxide: 8.2 μg/m3
Sulphur Dioxide: 0.2 μg/m3
Ozone: 38 μg/m3

Astronomical

Sunrise: 6:00 AM
Sun Transit: 1:06 PM
Sunset: 8:13 PM
Daylight: 14 hrs 13 mins
Moonrise: 8:34 PM
Moon Transit: 12:54 AM
Moonset: 5:51 AM
Moon Phase: Full
Moon Illumination: 99.7%

Best Times for Fishing or Hunting

Major Periods

12:24 AM - 2:54 AM
10:43 AM - 1:13 PM

Minor Periods

8:04 PM - 9:34 PM
5:21 AM - 6:51 AM

Action Rating: 4 out of 5

Flash Flood Watch issued July 28 at 9:59PM MDT until July 29 at 9:00PM MDT by NWS Pueblo CO

Effective: Tue July 28, 2026, 9:59 PM
Expires: Wed July 29, 2026, 6:00 AM

The Flash Flood Watch for the Aspen Acres Burn Scar is cancelled for this evening. Flooding is no longer expected to pose a threat. Please continue to heed remaining road closures.

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


Flash Flood Watch issued July 28 at 11:52PM MDT until July 29 at 9:00PM MDT by NWS Pueblo CO

Effective: Tue July 28, 2026, 11:52 PM
Expires: Wed July 29, 2026, 8:00 AM

* WHAT...Flash flooding and debris flows caused by excessive rainfall continue to be possible over the Aspen Acres burn scar. * WHERE...For the Aspen Acres Burn Scar. * WHEN...From Wednesday afternoon through Wednesday evening. * IMPACTS...Heavy rainfall over the Aspen Acres burn scar is expected up to and 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, urbanized street flooding, and debris flows in and near recent wildfire burn scars. * ADDITIONAL DETAILS... - National Weather Service Meteorologists are forecasting heavy rainfall over the burn scar, which may lead to flash flooding and debris flows. - The Aspen Acres burn scar. - http://www.weather.gov/safety/flood

You should monitor later forecasts and be prepared to take action should Flash Flood Warnings be issued.
Wednesday, July 29, 2026

Weather Forecast

Sunny
93°F
60.6°F
74.5°F
53%
0.09 in
57%
0%
16.3 mph
11.3


Air Quality

AQI: 1 - Good
PM2.5: 4.68 μg/m3
PM10: 5.38 μg/m3
Carbon Monoxide: 112.08 μg/m3
Nitrogen Dioxide: 4.66 μg/m3
Sulphur Dioxide: 0.22 μg/m3
Ozone: 79.63 μg/m3

Astronomical

Sunrise: 6:00 AM
Sun Transit: 1:06 PM
Sunset: 8:13 PM
Daylight: 14 hrs 13 mins
Moonrise: 8:34 PM
Moon Transit: 12:54 AM
Moonset: 5:51 AM
Moon Phase: Full
Moon Illumination: 99.7%

Best Times for Fishing or Hunting

Major Periods

12:24 AM - 2:54 AM
10:43 AM - 1:13 PM

Minor Periods

8:04 PM - 9:34 PM
5:21 AM - 6:51 AM

Action Rating: 4 out of 5

Thursday, July 30, 2026

Weather Forecast

Sunny
93.6°F
61.8°F
74.4°F
48%
0.09 in
57%
0%
16.6 mph
11.1


Air Quality

AQI: 1 - Good
PM2.5: 2.88 μg/m3
PM10: 3.38 μg/m3
Carbon Monoxide: 113.79 μg/m3
Nitrogen Dioxide: 4.38 μg/m3
Sulphur Dioxide: 0.2 μg/m3
Ozone: 78.75 μg/m3

Astronomical

Sunrise: 6:01 AM
Sun Transit: 1:06 PM
Sunset: 8:12 PM
Daylight: 14 hrs 11 mins
Moonrise: 9:00 PM
Moon Transit: 1:40 AM
Moonset: 6:55 AM
Moon Phase: Full
Moon Illumination: 97.1%

Best Times for Fishing or Hunting

Major Periods

1:10 AM - 3:40 AM
11:30 AM - 2:00 PM

Minor Periods

8:30 PM - 10:00 PM
6:25 AM - 7:55 AM

Action Rating: 5 out of 5

Friday, July 31, 2026

Weather Forecast

Sunny
95.6°F
63.7°F
76.4°F
41%
0.01 in
36%
0%
11.2 mph
11.6


Air Quality

AQI: 1 - Good
PM2.5: 4.2 μg/m3
PM10: 5.25 μg/m3
Carbon Monoxide: 111.21 μg/m3
Nitrogen Dioxide: 5.3 μg/m3
Sulphur Dioxide: 0.46 μg/m3
Ozone: 91.17 μg/m3

Astronomical

Sunrise: 6:02 AM
Sun Transit: 1:06 PM
Sunset: 8:11 PM
Daylight: 14 hrs 10 mins
Moonrise: 9:24 PM
Moon Transit: 2:25 AM
Moonset: 7:58 AM
Moon Phase: Full
Moon Illumination: 92.0%

Best Times for Fishing or Hunting

Major Periods

1:55 AM - 4:25 AM
12:13 AM - 2:43 PM

Minor Periods

8:54 PM - 10:24 PM
7:28 AM - 8:58 AM

Action Rating: 3 out of 5

Saturday, August 1, 2026

Weather Forecast

Sunny
91.6°F
59.8°F
75.7°F
43%
0.01 in
17%
0%
16.1 mph
11.3


Air Quality

AQI: 1 - Good
PM2.5: 5.61 μg/m3
PM10: 7.03 μg/m3
Carbon Monoxide: 115.7 μg/m3
Nitrogen Dioxide: 5.2 μg/m3
Sulphur Dioxide: 0.52 μg/m3
Ozone: 93.46 μg/m3

Astronomical

Sunrise: 6:02 AM
Sun Transit: 1:06 PM
Sunset: 8:10 PM
Daylight: 14 hrs 8 mins
Moonrise: 9:47 PM
Moon Transit: 3:08 AM
Moonset: 9:02 AM
Moon Phase: Waning Gibbous
Moon Illumination: 84.9%

Best Times for Fishing or Hunting

Major Periods

2:38 AM - 5:08 AM
12:55 AM - 3:25 PM

Minor Periods

9:17 PM - 10:47 PM
8:32 AM - 10:02 AM

Action Rating: 2 out of 5

Sunday, August 2, 2026

Weather Forecast

Sunny
95.6°F
61.5°F
77.4°F
38%
0.04 in
36%
0%
15 mph
9


Air Quality

AQI: 1 - Good
PM2.5: 6.4 μg/m3
PM10: 7.49 μg/m3
Carbon Monoxide: 168.29 μg/m3
Nitrogen Dioxide: 10.99 μg/m3
Sulphur Dioxide: 0.73 μg/m3
Ozone: 60.57 μg/m3

Astronomical

Sunrise: 6:03 AM
Sun Transit: 1:06 PM
Sunset: 8:09 PM
Daylight: 14 hrs 6 mins
Moonrise: 10:10 PM
Moon Transit: 3:51 AM
Moonset: 10:05 AM
Moon Phase: Waning Gibbous
Moon Illumination: 75.9%

Best Times for Fishing or Hunting

Major Periods

3:21 AM - 5:51 AM
4:20 PM - 6:50 PM

Minor Periods

9:40 PM - 11:10 PM
9:35 AM - 11:05 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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