Water Temperature of the Arkansas River in Portland, CO

Current Water Temperature

51.4°F

Measurement Time: Friday, March 20, 2026, 1:30 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

51.2°F
Sunny
Sunny
47°F
51.2°F
38%
WNW 5.8 mph
12.2 mph
47°F
23.3°F
0 in
0%
6 mi
1024 mbar
0.4

Five Day Weather Forecast

Sunny
Fri
H: 84°F
L: 44°F
Sunny
Sat
H: 89°F
L: 40°F
Partly Cloudy
Sun
H: 71°F
L: 44°F
Overcast
Mon
H: 72°F
L: 42°F
Sunny
Tue
H: 83°F
L: 47°F

Air Quality

AQI: 1 - Good
PM2.5: 4.45 μg/m3
PM10: 5.35 μg/m3
Carbon Monoxide: 105.85 μg/m3
Nitrogen Dioxide: 1.35 μg/m3
Sulphur Dioxide: 1.65 μg/m3
Ozone: 123 μg/m3

Astronomical

Sunrise: 7:03 AM
Sun Transit: 8:27 AM
Sunset: 7:12 PM
Daylight: 12 hrs 9 mins
Moonrise: 7:41 AM
Moon Transit: 2:29 PM
Moonset: 9:31 PM
Moon Phase: New
Moon Illumination: 2.8%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
1:59 PM - 4:29 PM

Minor Periods

9:01 PM - 10:31 PM
7:11 AM - 8:41 AM

Action Rating: 4 out of 5

Fire Weather Watch issued March 19 at 1:56PM MDT until March 21 at 10:00PM MDT by NWS Pueblo CO

Effective: Thu March 19, 2026, 1:56 PM
Expires: Fri March 20, 2026, 6:00 AM

The National Weather Service in Pueblo has issued a Fire Weather Watch for gusty winds and low relative humidity, which is in effect from Saturday morning through Saturday evening. * AFFECTED AREA...Fire Weather Zones 220, 221, 222, 223, 224, 225, 226, 227, 228, 229 and 230. * TIMING...From Saturday morning through Saturday evening. * WINDS...West 15 to 25 mph with gusts up to 40 mph. * RELATIVE HUMIDITY...As low as 4 percent. * TEMPERATURES...Up to 94. * IMPACTS...Fires will catch and spread quickly. Exercise extreme caution with any outdoor burning.

A Fire Weather Watch means that critical fire weather conditions are forecast to occur. Listen for later forecasts and possible Red Flag Warnings.


Red Flag Warning issued March 20 at 12:36AM MDT until March 21 at 11:00PM MDT by NWS Pueblo CO

Effective: Fri March 20, 2026, 12:36 AM
Expires: Fri March 20, 2026, 4:45 PM

The National Weather Service in Pueblo has issued a Red Flag Warning for gusty winds and low relative humidity, which is in effect from 11 AM to 11 PM MDT Saturday. The Fire Weather Watch is no longer in effect. * AFFECTED AREA...Fire Weather Zones 220, 221, 222, 223, 224, 225, 226, 227, 228, 229 and 230. * TIMING...From 11 AM to 11 PM MDT Saturday. * WINDS...West 15 to 25 mph with gusts up to 45 mph. * RELATIVE HUMIDITY...4 to 10 percent. * TEMPERATURES...mid 80s to lower 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.
Friday, March 20, 2026

Weather Forecast

Sunny
84.2°F
44.1°F
63°F
26%
0 in
0%
0%
8.3 mph
1.8


Air Quality

AQI: 1 - Good
PM2.5: 4.87 μg/m3
PM10: 6.4 μg/m3
Carbon Monoxide: 125.97 μg/m3
Nitrogen Dioxide: 3.99 μg/m3
Sulphur Dioxide: 1.43 μg/m3
Ozone: 95.72 μg/m3

Astronomical

Sunrise: 7:03 AM
Sun Transit: 8:27 AM
Sunset: 7:12 PM
Daylight: 12 hrs 9 mins
Moonrise: 7:41 AM
Moon Transit: 2:29 PM
Moonset: 9:31 PM
Moon Phase: New
Moon Illumination: 2.8%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
1:59 PM - 4:29 PM

Minor Periods

9:01 PM - 10:31 PM
7:11 AM - 8:41 AM

Action Rating: 4 out of 5

Saturday, March 21, 2026

Weather Forecast

Sunny
88.9°F
40.1°F
63.5°F
26%
0 in
0%
0%
16.6 mph
1.9


Air Quality

AQI: 1 - Good
PM2.5: 4.35 μg/m3
PM10: 5.52 μg/m3
Carbon Monoxide: 128.21 μg/m3
Nitrogen Dioxide: 4.95 μg/m3
Sulphur Dioxide: 1.41 μg/m3
Ozone: 84.8 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
70.7°F
43.7°F
57.3°F
37%
0 in
0%
0%
14.1 mph
1.8


Air Quality

AQI: 1 - Good
PM2.5: 3.91 μg/m3
PM10: 5.74 μg/m3
Carbon Monoxide: 124.61 μg/m3
Nitrogen Dioxide: 4.76 μg/m3
Sulphur Dioxide: 1.53 μg/m3
Ozone: 83.56 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

Overcast
71.9°F
41.9°F
54.1°F
48%
0 in
0%
0%
6.5 mph
1.6


Air Quality

AQI: 1 - Good
PM2.5: 5.87 μg/m3
PM10: 10.59 μg/m3
Carbon Monoxide: 132.75 μg/m3
Nitrogen Dioxide: 5.68 μg/m3
Sulphur Dioxide: 1.92 μg/m3
Ozone: 80.4 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

Sunny
82.6°F
46.5°F
60.8°F
26%
0 in
0%
0%
19.9 mph
0


Air Quality

AQI: 1 - Good
PM2.5: 4.46 μg/m3
PM10: 6.77 μg/m3
Carbon Monoxide: 165.66 μg/m3
Nitrogen Dioxide: 5.91 μg/m3
Sulphur Dioxide: 1.4 μg/m3
Ozone: 84 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

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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