Water Temperature of the Arkansas River in Portland, CO

Current Water Temperature

61.3°F

Measurement Time: Saturday, March 21, 2026, 3:30 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

56.9°F
Clear
Clear
54°F
56.7°F
29%
W 8.7 mph
18.3 mph
54°F
23.9°F
0 in
0%
6 mi
1011 mbar
0

Five Day Weather Forecast

Sunny
Sat
H: 88°F
L: 44°F
Partly Cloudy
Sun
H: 69°F
L: 42°F
Sunny
Mon
H: 70°F
L: 35°F
Cloudy
Tue
H: 83°F
L: 38°F
Sunny
Wed
H: 85°F
L: 52°F

Air Quality

AQI: 1 - Good
PM2.5: 4.15 μg/m3
PM10: 5.85 μg/m3
Carbon Monoxide: 123.85 μg/m3
Nitrogen Dioxide: 6.35 μg/m3
Sulphur Dioxide: 1.35 μg/m3
Ozone: 66 μg/m3

Astronomical

Sunrise: 7:02 AM
Sun Transit: 12:00 AM
Sunset: 7:13 PM
Daylight: 12 hrs 11 mins
Moonrise: 8:11 AM
Moon Transit: 3:22 PM
Moonset: 10:47 PM
Moon Phase: Waxing Crescent
Moon Illumination: 7.8%

Best Times for Fishing or Hunting

Major Periods

12:21 AM - 2:51 AM
2:52 PM - 5:22 PM

Minor Periods

10:17 PM - 11:47 PM
7:41 AM - 9:11 AM

Action Rating: 2 out of 5

Red Flag Warning issued March 21 at 12:31AM MDT until March 21 at 11:00PM MDT by NWS Pueblo CO

Effective: Sat March 21, 2026, 12:31 AM
Expires: Sat March 21, 2026, 4:45 PM

* AFFECTED AREA...Fire Weather Zones 220, 221, 222, 223, 224, 225, 226, 227, 228, 229, 230 and 237. * TIMING...From 11 AM this morning to 11 PM MDT this evening. * WINDS...West 20 to 30 mph with gusts up to 45 mph. * RELATIVE HUMIDITY...4 to 10 percent. * TEMPERATURES...Upper 80s to mid 90s. * 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 21 at 11:16AM MDT until March 21 at 11:00PM MDT by NWS Pueblo CO

Effective: Sat March 21, 2026, 11:16 AM
Expires: Sat March 21, 2026, 11:00 PM

* AFFECTED AREA...Fire Weather Zones 220, 221, 222, 223, 224, 225, 226, 227, 228, 229, 230 and 237. * TIMING...Until 11 PM MDT this evening. * WINDS...West 20 to 30 mph with gusts up to 45 mph. * RELATIVE HUMIDITY...4 to 10 percent. * TEMPERATURES...Upper 80s to mid 90s. * 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.
Saturday, March 21, 2026

Weather Forecast

Sunny
88°F
43.7°F
64°F
23%
0 in
0%
0%
15.7 mph
1.8


Air Quality

AQI: 1 - Good
PM2.5: 4.49 μg/m3
PM10: 5.72 μg/m3
Carbon Monoxide: 136.09 μg/m3
Nitrogen Dioxide: 4.91 μg/m3
Sulphur Dioxide: 1.44 μg/m3
Ozone: 85.88 μg/m3

Astronomical

Sunrise: 7:02 AM
Sun Transit: 12:00 AM
Sunset: 7:13 PM
Daylight: 12 hrs 11 mins
Moonrise: 8:11 AM
Moon Transit: 3:22 PM
Moonset: 10:47 PM
Moon Phase: Waxing Crescent
Moon Illumination: 7.8%

Best Times for Fishing or Hunting

Major Periods

12:21 AM - 2:51 AM
2:52 PM - 5:22 PM

Minor Periods

10:17 PM - 11:47 PM
7:41 AM - 9:11 AM

Action Rating: 2 out of 5

Sunday, March 22, 2026

Weather Forecast

Partly Cloudy
69.3°F
42.4°F
55.7°F
40%
0 in
0%
0%
15.4 mph
1.5


Air Quality

AQI: 1 - Good
PM2.5: 4.62 μg/m3
PM10: 6.48 μg/m3
Carbon Monoxide: 129.49 μg/m3
Nitrogen Dioxide: 5.48 μg/m3
Sulphur Dioxide: 1.63 μg/m3
Ozone: 79.08 μg/m3

Astronomical

Sunrise: 7:00 AM
Sun Transit: 1:06 PM
Sunset: 7:14 PM
Daylight: 12 hrs 14 mins
Moonrise: 8:47 AM
Moon Transit: 4:19 PM
Moonset: 12:03 PM
Moon Phase: Waxing Crescent
Moon Illumination: 14.9%

Best Times for Fishing or Hunting

Major Periods

1:15 AM - 3:45 AM
3:49 PM - 6:19 PM

Minor Periods

12:00 AM - 12:00 AM
8:17 AM - 9:47 AM

Action Rating: 2 out of 5

Monday, March 23, 2026

Weather Forecast

Sunny
70.2°F
35.2°F
52.1°F
54%
0 in
0%
0%
7.6 mph
1.5


Air Quality

AQI: 1 - Good
PM2.5: 7.47 μg/m3
PM10: 10.76 μg/m3
Carbon Monoxide: 142.01 μg/m3
Nitrogen Dioxide: 6.95 μg/m3
Sulphur Dioxide: 1.81 μg/m3
Ozone: 79.04 μg/m3

Astronomical

Sunrise: 6:59 AM
Sun Transit: 1:06 PM
Sunset: 7:15 PM
Daylight: 12 hrs 16 mins
Moonrise: 9:30 AM
Moon Transit: 5:19 PM
Moonset: 12:03 AM
Moon Phase: Waxing Crescent
Moon Illumination: 23.8%

Best Times for Fishing or Hunting

Major Periods

2:14 AM - 4:44 AM
4:49 PM - 7:19 PM

Minor Periods

9:00 AM - 10:30 AM
12:00 AM - 12:00 AM

Action Rating: 3 out of 5

Tuesday, March 24, 2026

Weather Forecast

Cloudy
82.8°F
37.9°F
60.4°F
39%
0 in
0%
0%
8.1 mph
1.9


Air Quality

AQI: 1 - Good
PM2.5: 4.67 μg/m3
PM10: 7.69 μg/m3
Carbon Monoxide: 167.52 μg/m3
Nitrogen Dioxide: 4.6 μg/m3
Sulphur Dioxide: 1.41 μg/m3
Ozone: 86.76 μg/m3

Astronomical

Sunrise: 6:57 AM
Sun Transit: 1:06 PM
Sunset: 7:16 PM
Daylight: 12 hrs 19 mins
Moonrise: 10:23 AM
Moon Transit: 6:22 PM
Moonset: 1:17 AM
Moon Phase: Waxing Crescent
Moon Illumination: 34.0%

Best Times for Fishing or Hunting

Major Periods

3:15 AM - 5:45 AM
5:52 PM - 8:22 PM

Minor Periods

9:53 AM - 11:23 AM
12:47 AM - 2:17 AM

Action Rating: 2 out of 5

Wednesday, March 25, 2026

Weather Forecast

Sunny
84.5°F
52.1°F
66.9°F
25%
0 in
0%
0%
7.8 mph
2.2


Air Quality

AQI: 1 - Good
PM2.5: 4.53 μg/m3
PM10: 7.02 μg/m3
Carbon Monoxide: 149.68 μg/m3
Nitrogen Dioxide: 5.87 μg/m3
Sulphur Dioxide: 1.24 μg/m3
Ozone: 58.77 μg/m3

Astronomical

Sunrise: 6:56 AM
Sun Transit: 1:05 PM
Sunset: 7:17 PM
Daylight: 12 hrs 21 mins
Moonrise: 11:26 AM
Moon Transit: 7:25 PM
Moonset: 2:23 AM
Moon Phase: First Quarter
Moon Illumination: 45.1%

Best Times for Fishing or Hunting

Major Periods

4:18 AM - 6:48 AM
6:55 PM - 9:25 PM

Minor Periods

10:56 AM - 12:26 AM
1:53 AM - 3:23 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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