Water Temperature of the Arkansas River in Portland, CO

Current Water Temperature

52.0°F

Measurement Time: Saturday, March 28, 2026, 8:30 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

47.1°F
Clear
Clear
40.7°F
47.1°F
37%
W 8.3 mph
17.4 mph
40.7°F
22.3°F
0 in
3%
6 mi
1015 mbar
0

Five Day Weather Forecast

Sunny
Sun
H: 79°F
L: 41°F
Sunny
Mon
H: 78°F
L: 41°F
Overcast
Tue
H: 58°F
L: 41°F
Partly Cloudy
Wed
H: 64°F
L: 40°F
Sunny
Thu
H: 69°F
L: 33°F

Air Quality

AQI: 1 - Good
PM2.5: 7.15 μg/m3
PM10: 8.95 μg/m3
Carbon Monoxide: 142.85 μg/m3
Nitrogen Dioxide: 5.25 μg/m3
Sulphur Dioxide: 1.65 μg/m3
Ozone: 72 μg/m3

Astronomical

Sunrise: 6:50 AM
Sun Transit: 1:04 PM
Sunset: 7:20 PM
Daylight: 12 hrs 31 mins
Moonrise: 4:09 PM
Moon Transit: 10:58 PM
Moonset: 5:10 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 86.2%

Best Times for Fishing or Hunting

Major Periods

8:00 AM - 10:30 AM
12:00 AM - 12:00 AM

Minor Periods

3:39 PM - 5:09 PM
4:40 AM - 6:10 AM

Action Rating: 2 out of 5

Red Flag Warning issued March 28 at 2:36PM MDT until March 28 at 7:00PM MDT by NWS Pueblo CO

Effective: Sat March 28, 2026, 2:36 PM
Expires: Sun March 29, 2026, 6:45 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 Monday morning through Monday evening. * AFFECTED AREA...Fire Weather Zones 221, 222, 224, 229, 230, 233, 234, 235, 236 and 237. * TIMING...For the Red Flag Warning, until 7 PM MDT this evening. For the Fire Weather Watch, from Monday morning through Monday evening. * WINDS...For the Red Flag Warning, West 20 to 30 mph with gusts up to 45 mph. For the Fire Weather Watch, west 15 to 25 mph with gusts up to 35 mph. * RELATIVE HUMIDITY...As low as 8 percent. * 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. A Fire Weather Watch means that critical fire weather conditions are forecast to occur. Listen for later forecasts and possible Red Flag Warnings.


Fire Weather Watch issued March 28 at 2:36PM MDT until March 30 at 8:00PM MDT by NWS Pueblo CO

Effective: Sat March 28, 2026, 2:36 PM
Expires: Sun March 29, 2026, 6:45 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 Monday morning through Monday evening. * AFFECTED AREA...Fire Weather Zones 221, 222, 224, 229, 230, 233, 234, 235, 236 and 237. * TIMING...For the Red Flag Warning, until 7 PM MDT this evening. For the Fire Weather Watch, from Monday morning through Monday evening. * WINDS...For the Red Flag Warning, West 20 to 30 mph with gusts up to 45 mph. For the Fire Weather Watch, west 15 to 25 mph with gusts up to 35 mph. * RELATIVE HUMIDITY...As low as 8 percent. * 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. A Fire Weather Watch means that critical fire weather conditions are forecast to occur. Listen for later forecasts and possible Red Flag Warnings.


Fire Weather Watch issued March 28 at 8:04PM MDT until March 30 at 8:00PM MDT by NWS Pueblo CO

Effective: Sat March 28, 2026, 8:04 PM
Expires: Sun March 29, 2026, 12:15 PM

* AFFECTED AREA...Fire Weather Zones 221, 222, 224, 229, 230, 233, 234, 235, 236 and 237. * TIMING...From Monday morning through Monday evening. * WINDS...West 15 to 25 mph with gusts up to 45 mph. * RELATIVE HUMIDITY...As low as 8 percent. * IMPACTS...Elevated fire danger is expected. Fires will catch and spread rapidly and erratically.

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


Fire Weather Watch issued March 28 at 2:36PM MDT until March 30 at 8:00PM MDT by NWS Pueblo CO

Effective: Sat March 28, 2026, 2:36 PM
Expires: Sun March 29, 2026, 6:45 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 Monday morning through Monday evening. * AFFECTED AREA...Fire Weather Zones 227, 228, 231 and 232. * TIMING...From Monday morning through Monday evening. * WINDS...West 15 to 25 mph with gusts up to 30 mph. * RELATIVE HUMIDITY...As low as 10 percent. * 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.


Fire Weather Watch issued March 28 at 8:04PM MDT until March 30 at 8:00PM MDT by NWS Pueblo CO

Effective: Sat March 28, 2026, 8:04 PM
Expires: Sun March 29, 2026, 12:15 PM

* AFFECTED AREA...Fire Weather Zones 227, 228, 231 and 232. * TIMING...From Monday morning through Monday evening. * WINDS...West 15 to 25 mph with gusts up to 40 mph. * RELATIVE HUMIDITY...As low as 10 percent. * IMPACTS...Fires will catch and spread quickly. Exercise extreme caution and avoid 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.
Sunday, March 29, 2026

Weather Forecast

Sunny
79.2°F
40.5°F
61.3°F
26%
0 in
0%
0%
14.5 mph
1.9


Air Quality

AQI: 1 - Good
PM2.5: 6.53 μg/m3
PM10: 9.31 μg/m3
Carbon Monoxide: 137.05 μg/m3
Nitrogen Dioxide: 4.71 μg/m3
Sulphur Dioxide: 1.56 μg/m3
Ozone: 91.88 μg/m3

Astronomical

Sunrise: 6:50 AM
Sun Transit: 1:04 PM
Sunset: 7:20 PM
Daylight: 12 hrs 31 mins
Moonrise: 4:09 PM
Moon Transit: 10:58 PM
Moonset: 5:10 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 86.2%

Best Times for Fishing or Hunting

Major Periods

8:00 AM - 10:30 AM
12:00 AM - 12:00 AM

Minor Periods

3:39 PM - 5:09 PM
4:40 AM - 6:10 AM

Action Rating: 2 out of 5

Monday, March 30, 2026

Weather Forecast

Sunny
77.7°F
40.8°F
60.1°F
27%
0 in
0%
0%
24.2 mph
1.6


Air Quality

AQI: 1 - Good
PM2.5: 7.83 μg/m3
PM10: 10.03 μg/m3
Carbon Monoxide: 132.29 μg/m3
Nitrogen Dioxide: 5.43 μg/m3
Sulphur Dioxide: 1.62 μg/m3
Ozone: 91.12 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
58.1°F
40.8°F
50.5°F
50%
0 in
0%
0%
13.9 mph
1.2


Air Quality

AQI: 1 - Good
PM2.5: 8.88 μg/m3
PM10: 12 μg/m3
Carbon Monoxide: 140.93 μg/m3
Nitrogen Dioxide: 5.34 μg/m3
Sulphur Dioxide: 1.71 μg/m3
Ozone: 82.28 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
64°F
40°F
49.3°F
54%
0 in
0%
0%
19.2 mph
1.1


Air Quality

AQI: 1 - Good
PM2.5: 10.62 μg/m3
PM10: 31.37 μg/m3
Carbon Monoxide: 165.44 μg/m3
Nitrogen Dioxide: 3.4 μg/m3
Sulphur Dioxide: 1.64 μg/m3
Ozone: 83.52 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
69.4°F
33°F
46.7°F
54%
0 in
0%
0%
11 mph
0


Air Quality

AQI: 1 - Good
PM2.5: 6.8 μg/m3
PM10: 8.18 μg/m3
Carbon Monoxide: 173.2 μg/m3
Nitrogen Dioxide: 5.58 μg/m3
Sulphur Dioxide: 1.57 μg/m3
Ozone: 79.77 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

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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