Water Temperature of the Arkansas River in Portland, CO

Current Water Temperature

54.1°F

Measurement Time: Monday, March 30, 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

73.2°F
Sunny
Sunny
72°F
72°F
14%
W 16.6 mph
19 mph
73°F
23°F
0 in
8%
6 mi
1009 mbar
6.8

Five Day Weather Forecast

Sunny
Mon
H: 79°F
L: 42°F
Overcast
Tue
H: 73°F
L: 41°F
Partly Cloudy
Wed
H: 67°F
L: 41°F
Sunny
Thu
H: 73°F
L: 31°F
Patchy rain nearby
Fri
H: 72°F
L: 38°F

Air Quality

AQI: 1 - Good
PM2.5: 5.05 μg/m3
PM10: 7.05 μg/m3
Carbon Monoxide: 123.85 μg/m3
Nitrogen Dioxide: 1.55 μg/m3
Sulphur Dioxide: 1.55 μg/m3
Ozone: 121 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

Red Flag Warning issued March 30 at 12:43AM MDT until March 30 at 8:00PM MDT by NWS Pueblo CO

Effective: Mon March 30, 2026, 12:43 AM
Expires: Mon March 30, 2026, 4:45 PM

* AFFECTED AREA...Fire Weather Zones 221, 222, 224, 227, 228, 229, 230, 231, 232, 233, 234, 235, 236 and 237. * TIMING...From 11 AM this morning to 8 PM MDT this evening. * WINDS...West 10 to 20 mph with gusts up to 40 mph. * RELATIVE HUMIDITY...As low as 9 percent. * IMPACTS...Fires will catch and spread quickly. Exercise extreme caution with any outdoor burning.

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.
Monday, March 30, 2026

Weather Forecast

Sunny
79.2°F
42.1°F
59.6°F
26%
0 in
0%
0%
26.8 mph
1.6


Air Quality

AQI: 1 - Good
PM2.5: 5.41 μg/m3
PM10: 8.39 μg/m3
Carbon Monoxide: 136.73 μg/m3
Nitrogen Dioxide: 4.86 μg/m3
Sulphur Dioxide: 1.49 μg/m3
Ozone: 89 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

Tuesday, March 31, 2026

Weather Forecast

Overcast
72.9°F
41°F
56.7°F
36%
0 in
0%
0%
10.1 mph
1.3


Air Quality

AQI: 1 - Good
PM2.5: 6.08 μg/m3
PM10: 9 μg/m3
Carbon Monoxide: 141.73 μg/m3
Nitrogen Dioxide: 4.46 μg/m3
Sulphur Dioxide: 1.59 μg/m3
Ozone: 89.84 μg/m3

Astronomical

Sunrise: 6:47 AM
Sun Transit: 1:04 PM
Sunset: 7:22 PM
Daylight: 12 hrs 36 mins
Moonrise: 6:19 PM
Moon Transit: 12:00 AM
Moonset: 5:59 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 97.6%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
9:30 AM - 12:00 AM

Minor Periods

5:49 PM - 7:19 PM
5:29 AM - 6:59 AM

Action Rating: 4 out of 5

Wednesday, April 1, 2026

Weather Forecast

Partly Cloudy
67.3°F
40.6°F
53.3°F
51%
0 in
0%
0%
14.8 mph
1.2


Air Quality

AQI: 1 - Good
PM2.5: 6.79 μg/m3
PM10: 18.97 μg/m3
Carbon Monoxide: 145.69 μg/m3
Nitrogen Dioxide: 2.87 μg/m3
Sulphur Dioxide: 1.63 μg/m3
Ozone: 83.68 μg/m3

Astronomical

Sunrise: 6:45 AM
Sun Transit: 1:03 PM
Sunset: 7:23 PM
Daylight: 12 hrs 38 mins
Moonrise: 7:22 PM
Moon Transit: 12:25 AM
Moonset: 6:22 AM
Moon Phase: Full
Moon Illumination: 99.8%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
10:12 AM - 12:42 AM

Minor Periods

6:52 PM - 8:22 PM
5:52 AM - 7:22 AM

Action Rating: 3 out of 5

Thursday, April 2, 2026

Weather Forecast

Sunny
73.3°F
30.7°F
53.4°F
38%
0 in
0%
0%
26.2 mph
1.9


Air Quality

AQI: 1 - Good
PM2.5: 2.19 μg/m3
PM10: 3.9 μg/m3
Carbon Monoxide: 134.46 μg/m3
Nitrogen Dioxide: 2.64 μg/m3
Sulphur Dioxide: 1.19 μg/m3
Ozone: 93.32 μg/m3

Astronomical

Sunrise: 6:44 AM
Sun Transit: 1:03 PM
Sunset: 7:24 PM
Daylight: 12 hrs 41 mins
Moonrise: 8:25 PM
Moon Transit: 1:07 AM
Moonset: 6:45 AM
Moon Phase: Full
Moon Illumination: 99.5%

Best Times for Fishing or Hunting

Major Periods

12:37 AM - 3:07 AM
10:55 AM - 1:25 PM

Minor Periods

7:55 PM - 9:25 PM
6:15 AM - 7:45 AM

Action Rating: 4 out of 5

Friday, April 3, 2026

Weather Forecast

Patchy rain nearby
71.6°F
37.9°F
52°F
39%
0.1 in
73%
0%
22.8 mph
0


Air Quality

AQI: 1 - Good
PM2.5: 3.97 μg/m3
PM10: 6.86 μg/m3
Carbon Monoxide: 150.73 μg/m3
Nitrogen Dioxide: 4.1 μg/m3
Sulphur Dioxide: 1.44 μg/m3
Ozone: 96.23 μg/m3

Astronomical

Sunrise: 6:42 AM
Sun Transit: 1:03 PM
Sunset: 7:25 PM
Daylight: 12 hrs 43 mins
Moonrise: 9:27 PM
Moon Transit: 1:50 AM
Moonset: 7:09 AM
Moon Phase: Full
Moon Illumination: 96.6%

Best Times for Fishing or Hunting

Major Periods

1:20 AM - 3:50 AM
11:38 AM - 2:08 PM

Minor Periods

8:57 PM - 10:27 PM
6:39 AM - 8:09 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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