Water Temperature of the Arkansas River in Portland, CO

Current Water Temperature

64.8°F

Measurement Time: Thursday, March 26, 2026, 12:30 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

71.7°F
Sunny
Sunny
70.7°F
70.7°F
21%
N 9.4 mph
14.1 mph
71.7°F
32.1°F
0 in
15%
6 mi
1007 mbar
0

Five Day Weather Forecast

Sunny
Thu
H: 86°F
L: 47°F
Overcast
Fri
H: 44°F
L: 32°F
Sunny
Sat
H: 81°F
L: 27°F
Sunny
Sun
H: 77°F
L: 41°F
Partly Cloudy
Mon
H: 73°F
L: 52°F

Air Quality

AQI: 1 - Good
PM2.5: 4.75 μg/m3
PM10: 7.55 μg/m3
Carbon Monoxide: 130.85 μg/m3
Nitrogen Dioxide: 5.75 μg/m3
Sulphur Dioxide: 1.85 μg/m3
Ozone: 63 μg/m3

Astronomical

Sunrise: 6:54 AM
Sun Transit: 1:05 PM
Sunset: 7:18 PM
Daylight: 12 hrs 23 mins
Moonrise: 12:36 AM
Moon Transit: 8:24 PM
Moonset: 3:19 AM
Moon Phase: First Quarter
Moon Illumination: 56.4%

Best Times for Fishing or Hunting

Major Periods

5:20 AM - 7:50 AM
7:54 PM - 10:24 PM

Minor Periods

12:06 AM - 1:36 PM
2:49 AM - 4:19 AM

Action Rating: 2 out of 5

Red Flag Warning issued March 26 at 12:46AM MDT until March 26 at 8:00PM MDT by NWS Pueblo CO

Effective: Thu March 26, 2026, 12:46 AM
Expires: Thu March 26, 2026, 5:00 PM

* AFFECTED AREA...Fire Weather Zones 220, 221, 222, 224, 225, 227, 228, 229, 230, 231, 232, 233, 234, 235, 236 and 237. * WINDS...Northwest 15 to 30 mph with gusts up to 45 mph. * RELATIVE HUMIDITY...As low as 7 percent. * IMPACTS...Elevated fire danger is expected. Fires will catch and spread rapidly and erratically.

A Red Flag Warning means that critical fire weather conditions are either occurring now, or will shortly. A combination of strong winds, low relative humidity, and warm temperatures can contribute to extreme fire behavior.


Red Flag Warning issued March 26 at 6:20PM MDT until March 26 at 8:00PM MDT by NWS Pueblo CO

Effective: Thu March 26, 2026, 6:20 PM
Expires: Fri March 27, 2026, 10:30 AM

* AFFECTED AREA...Fire Weather Zones 220, 222, 224, 225, 229 and 230. * TIMING...For the Red Flag Warning, until 8 PM MDT this evening. For the Fire Weather Watch, from Saturday afternoon through Saturday evening. * WINDS...South 15 to 25 mph with gusts up to 45 mph. * RELATIVE HUMIDITY...As low as 6 percent. * IMPACTS...Elevated fire danger is expected. Fires will catch and spread rapidly and erratically.

A Red Flag Warning means that critical fire weather conditions are either occurring now, or will shortly. A combination of strong winds, low relative humidity, and warm temperatures can contribute to extreme fire behavior. A Fire Weather Watch means that critical fire weather conditions are forecast to occur. Listen for later forecasts and possible Red Flag Warnings.


Fire Weather Watch issued March 26 at 6:20PM MDT until March 28 at 7:00PM MDT by NWS Pueblo CO

Effective: Thu March 26, 2026, 6:20 PM
Expires: Fri March 27, 2026, 10:30 AM

* AFFECTED AREA...Fire Weather Zones 220, 222, 224, 225, 229 and 230. * TIMING...For the Red Flag Warning, until 8 PM MDT this evening. For the Fire Weather Watch, from Saturday afternoon through Saturday evening. * WINDS...South 15 to 25 mph with gusts up to 45 mph. * RELATIVE HUMIDITY...As low as 6 percent. * IMPACTS...Elevated fire danger is expected. Fires will catch and spread rapidly and erratically.

A Red Flag Warning means that critical fire weather conditions are either occurring now, or will shortly. A combination of strong winds, low relative humidity, and warm temperatures can contribute to extreme fire behavior. A Fire Weather Watch means that critical fire weather conditions are forecast to occur. Listen for later forecasts and possible Red Flag Warnings.
Thursday, March 26, 2026

Weather Forecast

Sunny
85.5°F
46.6°F
65.5°F
35%
0 in
0%
0%
16.6 mph
2


Air Quality

AQI: 1 - Good
PM2.5: 3.34 μg/m3
PM10: 4.74 μg/m3
Carbon Monoxide: 129.29 μg/m3
Nitrogen Dioxide: 4.88 μg/m3
Sulphur Dioxide: 1.36 μg/m3
Ozone: 73.96 μg/m3

Astronomical

Sunrise: 6:54 AM
Sun Transit: 1:05 PM
Sunset: 7:18 PM
Daylight: 12 hrs 23 mins
Moonrise: 12:36 AM
Moon Transit: 8:24 PM
Moonset: 3:19 AM
Moon Phase: First Quarter
Moon Illumination: 56.4%

Best Times for Fishing or Hunting

Major Periods

5:20 AM - 7:50 AM
7:54 PM - 10:24 PM

Minor Periods

12:06 AM - 1:36 PM
2:49 AM - 4:19 AM

Action Rating: 2 out of 5

Friday, March 27, 2026

Weather Forecast

Overcast
43.5°F
31.8°F
41°F
71%
0 in
0%
0%
14.1 mph
1.6


Air Quality

AQI: 1 - Good
PM2.5: 4.68 μg/m3
PM10: 6.93 μg/m3
Carbon Monoxide: 140.97 μg/m3
Nitrogen Dioxide: 3.17 μg/m3
Sulphur Dioxide: 1.45 μg/m3
Ozone: 82.4 μg/m3

Astronomical

Sunrise: 6:53 AM
Sun Transit: 1:05 PM
Sunset: 7:19 PM
Daylight: 12 hrs 26 mins
Moonrise: 1:48 PM
Moon Transit: 9:20 PM
Moonset: 4:04 AM
Moon Phase: First Quarter
Moon Illumination: 67.4%

Best Times for Fishing or Hunting

Major Periods

6:18 AM - 8:48 AM
8:50 PM - 11:20 PM

Minor Periods

1:18 PM - 2:48 PM
3:34 AM - 5:04 AM

Action Rating: 2 out of 5

Saturday, March 28, 2026

Weather Forecast

Sunny
80.8°F
26.8°F
54.2°F
44%
0 in
0%
0%
21 mph
1.8


Air Quality

AQI: 1 - Good
PM2.5: 7.22 μg/m3
PM10: 15.53 μg/m3
Carbon Monoxide: 139.53 μg/m3
Nitrogen Dioxide: 4.15 μg/m3
Sulphur Dioxide: 1.44 μg/m3
Ozone: 80.72 μg/m3

Astronomical

Sunrise: 6:51 AM
Sun Transit: 1:05 PM
Sunset: 7:20 PM
Daylight: 12 hrs 28 mins
Moonrise: 3:00 PM
Moon Transit: 10:11 PM
Moonset: 4:41 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 77.5%

Best Times for Fishing or Hunting

Major Periods

7:11 AM - 9:41 AM
12:00 AM - 12:00 AM

Minor Periods

2:30 PM - 4:00 PM
4:11 AM - 5:41 AM

Action Rating: 3 out of 5

Sunday, March 29, 2026

Weather Forecast

Sunny
76.6°F
40.6°F
59.9°F
25%
0 in
0%
0%
18.8 mph
1.7


Air Quality

AQI: 1 - Good
PM2.5: 6.15 μg/m3
PM10: 9.83 μg/m3
Carbon Monoxide: 132.32 μg/m3
Nitrogen Dioxide: 4.61 μg/m3
Sulphur Dioxide: 1.6 μg/m3
Ozone: 87.6 μg/m3

Astronomical

Sunrise: 6:50 AM
Sun Transit: 1:04 PM
Sunset: 7:20 PM
Daylight: 12 hrs 31 mins
Moonrise: 4:09 PM
Moon Transit: 10:58 PM
Moonset: 5:10 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 86.2%

Best Times for Fishing or Hunting

Major Periods

8:00 AM - 10:30 AM
12:00 AM - 12:00 AM

Minor Periods

3:39 PM - 5:09 PM
4:40 AM - 6:10 AM

Action Rating: 2 out of 5

Monday, March 30, 2026

Weather Forecast

Partly Cloudy
72.6°F
52.4°F
61.3°F
30%
0 in
0%
0%
12.1 mph
1.2


Air Quality

AQI: 1 - Good
PM2.5: 6.5 μg/m3
PM10: 9.41 μg/m3
Carbon Monoxide: 161.6 μg/m3
Nitrogen Dioxide: 6.94 μg/m3
Sulphur Dioxide: 1.75 μg/m3
Ozone: 73.31 μg/m3

Astronomical

Sunrise: 6:48 AM
Sun Transit: 1:04 PM
Sunset: 7:21 PM
Daylight: 12 hrs 33 mins
Moonrise: 5:15 PM
Moon Transit: 11:42 PM
Moonset: 5:36 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 93.0%

Best Times for Fishing or Hunting

Major Periods

8:46 AM - 11:16 AM
12:00 AM - 12:00 AM

Minor Periods

4:45 PM - 6:15 PM
5:06 AM - 6:36 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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