Water Temperature of the Arkansas River in Portland, CO

Current Water Temperature

81.7°F

Measurement Time: Sunday, July 19, 2026, 1:30 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

80°F
Sunny
Sunny
66.9°F
77.9°F
26%
ESE 10.5 mph
20 mph
80°F
41.8°F
0 in
0%
6 mi
1009 mbar
0

Five Day Weather Forecast

Sunny
Sun
H: 93°F
L: 59°F
Sunny
Mon
H: 97°F
L: 63°F
Sunny
Tue
H: 96°F
L: 64°F
Sunny
Wed
H: 94°F
L: 62°F
Sunny
Thu
H: 93°F
L: 62°F

Air Quality

AQI: 1 - Good
PM2.5: 5.4 μg/m3
PM10: 7.3 μg/m3
Carbon Monoxide: 105 μg/m3
Nitrogen Dioxide: 2.1 μg/m3
Sulphur Dioxide: 0.3 μg/m3
Ozone: 109 μg/m3

Astronomical

Sunrise: 5:52 AM
Sun Transit: 1:06 PM
Sunset: 8:21 PM
Daylight: 14 hrs 30 mins
Moonrise: 11:49 AM
Moon Transit: 5:40 PM
Moonset: 11:23 PM
Moon Phase: Waxing Crescent
Moon Illumination: 22.6%

Best Times for Fishing or Hunting

Major Periods

2:45 AM - 5:15 AM
5:10 PM - 7:40 PM

Minor Periods

12:00 AM - 12:00 AM
11:19 AM - 12:49 AM

Action Rating: 2 out of 5

Heat Advisory issued July 19 at 10:27AM MDT until July 20 at 6:00PM MDT by NWS Pueblo CO

Effective: Sun July 19, 2026, 10:27 AM
Expires: Sun July 19, 2026, 6:30 PM

* WHAT...Maximum temperatures ranging between 95 to 100 degrees are anticipated * WHERE...Eastern Fremont county and El Paso county below 7500 feet. * WHEN...From noon to 6 PM MDT Monday. * IMPACTS...Hot temperatures may cause heat illnesses.

Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors.


Heat Advisory issued July 19 at 6:03PM MDT until July 20 at 6:00PM MDT by NWS Pueblo CO

Effective: Sun July 19, 2026, 6:03 PM
Expires: Mon July 20, 2026, 2:15 AM

* WHAT...Maximum temperatures ranging between 95 to 100 degrees are anticipated. * WHERE...Eastern Fremont county and El Paso County below 7500 feet. * WHEN...From noon to 6 PM MDT Monday. * IMPACTS...Hot temperatures may cause heat illnesses.

Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors.
Sunday, July 19, 2026

Weather Forecast

Sunny
93.2°F
58.8°F
76.9°F
34%
0 in
1%
0%
14.8 mph
12.1


Air Quality

AQI: 1 - Good
PM2.5: 7.2 μg/m3
PM10: 9.15 μg/m3
Carbon Monoxide: 112.21 μg/m3
Nitrogen Dioxide: 4.95 μg/m3
Sulphur Dioxide: 0.57 μg/m3
Ozone: 97.92 μg/m3

Astronomical

Sunrise: 5:52 AM
Sun Transit: 1:06 PM
Sunset: 8:21 PM
Daylight: 14 hrs 30 mins
Moonrise: 11:49 AM
Moon Transit: 5:40 PM
Moonset: 11:23 PM
Moon Phase: Waxing Crescent
Moon Illumination: 22.6%

Best Times for Fishing or Hunting

Major Periods

2:45 AM - 5:15 AM
5:10 PM - 7:40 PM

Minor Periods

12:00 AM - 12:00 AM
11:19 AM - 12:49 AM

Action Rating: 2 out of 5

Monday, July 20, 2026

Weather Forecast

Sunny
96.6°F
63°F
79.8°F
28%
0 in
0%
0%
15.9 mph
12.7


Air Quality

AQI: 1 - Good
PM2.5: 6 μg/m3
PM10: 9.07 μg/m3
Carbon Monoxide: 110.29 μg/m3
Nitrogen Dioxide: 4.44 μg/m3
Sulphur Dioxide: 0.46 μg/m3
Ozone: 94.17 μg/m3

Astronomical

Sunrise: 5:52 AM
Sun Transit: 1:06 PM
Sunset: 8:20 PM
Daylight: 14 hrs 28 mins
Moonrise: 12:53 AM
Moon Transit: 6:24 PM
Moonset: 12:23 AM
Moon Phase: Waxing Crescent
Moon Illumination: 32.7%

Best Times for Fishing or Hunting

Major Periods

3:28 AM - 5:58 AM
5:54 PM - 8:24 PM

Minor Periods

12:23 AM - 1:53 PM
12:00 AM - 12:00 AM

Action Rating: 4 out of 5

Tuesday, July 21, 2026

Weather Forecast

Sunny
96.2°F
64.3°F
80.5°F
29%
0 in
1%
0%
20.1 mph
12.2


Air Quality

AQI: 1 - Good
PM2.5: 5.25 μg/m3
PM10: 8.95 μg/m3
Carbon Monoxide: 108.42 μg/m3
Nitrogen Dioxide: 3.88 μg/m3
Sulphur Dioxide: 0.4 μg/m3
Ozone: 91.63 μg/m3

Astronomical

Sunrise: 5:53 AM
Sun Transit: 1:06 PM
Sunset: 8:20 PM
Daylight: 14 hrs 27 mins
Moonrise: 1:56 PM
Moon Transit: 7:08 PM
Moonset: 12:47 AM
Moon Phase: First Quarter
Moon Illumination: 43.7%

Best Times for Fishing or Hunting

Major Periods

4:12 AM - 6:42 AM
6:38 PM - 9:08 PM

Minor Periods

1:26 PM - 2:56 PM
12:00 AM - 12:00 AM

Action Rating: 2 out of 5

Wednesday, July 22, 2026

Weather Forecast

Sunny
94.2°F
61.8°F
78.8°F
35%
0.01 in
36%
0%
13.6 mph
11.3


Air Quality

AQI: 1 - Good
PM2.5: 7.48 μg/m3
PM10: 11.71 μg/m3
Carbon Monoxide: 123.31 μg/m3
Nitrogen Dioxide: 4.57 μg/m3
Sulphur Dioxide: 0.42 μg/m3
Ozone: 94.29 μg/m3

Astronomical

Sunrise: 5:54 AM
Sun Transit: 1:06 PM
Sunset: 8:19 PM
Daylight: 14 hrs 25 mins
Moonrise: 2:58 PM
Moon Transit: 7:54 PM
Moonset: 12:14 AM
Moon Phase: First Quarter
Moon Illumination: 55.0%

Best Times for Fishing or Hunting

Major Periods

4:57 AM - 7:27 AM
7:24 PM - 9:54 PM

Minor Periods

2:28 PM - 3:58 PM
12:00 AM - 12:00 AM

Action Rating: 2 out of 5

Thursday, July 23, 2026

Weather Forecast

Sunny
92.8°F
62.4°F
78.7°F
39%
0.03 in
36%
0%
8.9 mph
10


Air Quality

AQI: 1 - Good
PM2.5: 9.21 μg/m3
PM10: 9.7 μg/m3
Carbon Monoxide: 203 μg/m3
Nitrogen Dioxide: 13.56 μg/m3
Sulphur Dioxide: 0.63 μg/m3
Ozone: 41.43 μg/m3

Astronomical

Sunrise: 5:55 AM
Sun Transit: 1:06 PM
Sunset: 8:18 PM
Daylight: 14 hrs 23 mins
Moonrise: 4:00 PM
Moon Transit: 8:42 PM
Moonset: 12:45 AM
Moon Phase: First Quarter
Moon Illumination: 66.1%

Best Times for Fishing or Hunting

Major Periods

5:43 AM - 8:13 AM
8:12 PM - 10:42 PM

Minor Periods

3:30 PM - 5:00 PM
12:15 AM - 1:45 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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