Water Temperature of the Arkansas River in Portland, CO

Current Water Temperature

56.8°F

Measurement Time: Wednesday, May 20, 2026, 7:30 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

64.8°F
Partly Cloudy
Partly Cloudy
64.8°F
64.8°F
40%
ESE 6.5 mph
7.5 mph
64.8°F
40.1°F
0 in
35%
6 mi
1011 mbar
8.6

Five Day Weather Forecast

Patchy rain nearby
Wed
H: 74°F
L: 45°F
Patchy rain nearby
Thu
H: 72°F
L: 45°F
Patchy rain nearby
Fri
H: 77°F
L: 43°F
Patchy rain nearby
Sat
H: 73°F
L: 43°F
Sunny
Sun
H: 80°F
L: 47°F

Air Quality

PM2.5: 4.65 μg/m3
PM10: 10.55 μg/m3
Carbon Monoxide: 145.85 μg/m3
Nitrogen Dioxide: 3.25 μg/m3
Sulphur Dioxide: 0.95 μg/m3
Ozone: 71 μg/m3

Astronomical

Sunrise: 5:45 AM
Sun Transit: 12:56 AM
Sunset: 8:09 PM
Daylight: 14 hrs 25 mins
Moonrise: 9:24 AM
Moon Transit: 5:07 PM
Moonset: 12:56 AM
Moon Phase: Waxing Crescent
Moon Illumination: 14.4%

Best Times for Fishing or Hunting

Major Periods

2:02 AM - 4:32 AM
4:37 PM - 7:07 PM

Minor Periods

8:54 AM - 10:24 AM
12:00 AM - 12:00 AM

Action Rating: 2 out of 5

Wednesday, May 20, 2026

Weather Forecast

Patchy rain nearby
74.4°F
44.5°F
54.3°F
70%
0.14 in
89%
0%
15.7 mph
9.2


Air Quality

AQI: 1 - Good
PM2.5: 5.31 μg/m3
PM10: 13.5 μg/m3
Carbon Monoxide: 135.81 μg/m3
Nitrogen Dioxide: 2.48 μg/m3
Sulphur Dioxide: 0.94 μg/m3
Ozone: 70.16 μg/m3

Astronomical

Sunrise: 5:45 AM
Sun Transit: 12:56 AM
Sunset: 8:09 PM
Daylight: 14 hrs 25 mins
Moonrise: 9:24 AM
Moon Transit: 5:07 PM
Moonset: 12:56 AM
Moon Phase: Waxing Crescent
Moon Illumination: 14.4%

Best Times for Fishing or Hunting

Major Periods

2:02 AM - 4:32 AM
4:37 PM - 7:07 PM

Minor Periods

8:54 AM - 10:24 AM
12:00 AM - 12:00 AM

Action Rating: 2 out of 5

Thursday, May 21, 2026

Weather Forecast

Patchy rain nearby
72.1°F
45.3°F
57.9°F
63%
0.05 in
89%
0%
15 mph
0


Air Quality

AQI: 1 - Good
PM2.5: 5.04 μg/m3
PM10: 9.17 μg/m3
Carbon Monoxide: 144.8 μg/m3
Nitrogen Dioxide: 4.35 μg/m3
Sulphur Dioxide: 0.99 μg/m3
Ozone: 76.16 μg/m3

Astronomical

Sunrise: 5:44 AM
Sun Transit: 12:56 AM
Sunset: 8:10 PM
Daylight: 14 hrs 26 mins
Moonrise: 10:40 AM
Moon Transit: 6:03 PM
Moonset: 12:40 AM
Moon Phase: Waxing Crescent
Moon Illumination: 23.2%

Best Times for Fishing or Hunting

Major Periods

3:01 AM - 5:31 AM
5:33 PM - 8:03 PM

Minor Periods

10:10 AM - 11:40 AM
12:10 AM - 1:40 AM

Action Rating: 4 out of 5

Friday, May 22, 2026

Weather Forecast

Patchy rain nearby
76.8°F
43.2°F
58.9°F
43%
0.03 in
81%
0%
13.2 mph
3


Air Quality

AQI: 1 - Good
PM2.5: 4.81 μg/m3
PM10: 7.58 μg/m3
Carbon Monoxide: 157.39 μg/m3
Nitrogen Dioxide: 4.9 μg/m3
Sulphur Dioxide: 1.13 μg/m3
Ozone: 93.64 μg/m3

Astronomical

Sunrise: 5:43 AM
Sun Transit: 12:56 AM
Sunset: 8:11 PM
Daylight: 14 hrs 28 mins
Moonrise: 11:52 AM
Moon Transit: 6:53 PM
Moonset: 1:15 AM
Moon Phase: Waxing Crescent
Moon Illumination: 33.4%

Best Times for Fishing or Hunting

Major Periods

3:54 AM - 6:24 AM
6:23 PM - 8:53 PM

Minor Periods

11:22 AM - 12:52 AM
12:45 AM - 2:15 AM

Action Rating: 2 out of 5

Saturday, May 23, 2026

Weather Forecast

Patchy rain nearby
73.3°F
43.1°F
56.3°F
63%
0.01 in
87%
0%
16.6 mph
3


Air Quality

AQI: 1 - Good
PM2.5: 3.39 μg/m3
PM10: 5.58 μg/m3
Carbon Monoxide: 141.85 μg/m3
Nitrogen Dioxide: 4.36 μg/m3
Sulphur Dioxide: 1.16 μg/m3
Ozone: 76.31 μg/m3

Astronomical

Sunrise: 5:42 AM
Sun Transit: 12:56 AM
Sunset: 8:12 PM
Daylight: 14 hrs 29 mins
Moonrise: 1:00 PM
Moon Transit: 7:39 PM
Moonset: 1:44 AM
Moon Phase: First Quarter
Moon Illumination: 44.4%

Best Times for Fishing or Hunting

Major Periods

4:43 AM - 7:13 AM
7:09 PM - 9:39 PM

Minor Periods

12:30 AM - 2:00 PM
1:14 AM - 2:44 AM

Action Rating: 2 out of 5

Sunday, May 24, 2026

Weather Forecast

Sunny
80.4°F
47.1°F
63.6°F
41%
0 in
0%
0%
17 mph
5


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: 5:42 AM
Sun Transit: 12:56 AM
Sunset: 8:13 PM
Daylight: 14 hrs 31 mins
Moonrise: 2:05 PM
Moon Transit: 8:23 PM
Moonset: 2:09 AM
Moon Phase: First Quarter
Moon Illumination: 55.7%

Best Times for Fishing or Hunting

Major Periods

5:27 AM - 7:57 AM
7:53 PM - 10:23 PM

Minor Periods

1:35 PM - 3:05 PM
1:39 AM - 3:09 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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