Water Temperature of the Arkansas River in Portland, CO

Current Water Temperature

51.8°F

Measurement Time: Thursday, March 12, 2026, 9:30 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

64.7°F
Sunny
Sunny
64.6°F
64.7°F
21%
WNW 17 mph
19.6 mph
64.6°F
24.2°F
0 in
11%
6 mi
1013 mbar
2.4

Five Day Weather Forecast

Sunny
Thu
H: 66°F
L: 27°F
Partly Cloudy
Fri
H: 69°F
L: 40°F
Partly Cloudy
Sat
H: 73°F
L: 37°F
Sunny
Sun
H: 42°F
L: 25°F
Sunny
Mon
H: 49°F
L: 24°F

Air Quality

AQI: 1 - Good
PM2.5: 3.15 μg/m3
PM10: 4.15 μg/m3
Carbon Monoxide: 144.85 μg/m3
Nitrogen Dioxide: 5.95 μg/m3
Sulphur Dioxide: 1.35 μg/m3
Ozone: 73 μg/m3

Astronomical

Sunrise: 7:15 AM
Sun Transit: 12:00 AM
Sunset: 7:04 PM
Daylight: 11 hrs 49 mins
Moonrise: 3:34 AM
Moon Transit: 8:01 AM
Moonset: 12:31 AM
Moon Phase: Last Quarter
Moon Illumination: 25.6%

Best Times for Fishing or Hunting

Major Periods

7:31 AM - 10:01 AM
5:53 PM - 8:23 PM

Minor Periods

12:01 AM - 1:31 PM
3:04 AM - 4:34 AM

Action Rating: 3 out of 5

Fire Weather Watch issued March 12 at 12:31AM MDT until March 13 at 8:00PM MDT by NWS Pueblo CO

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

The National Weather Service in Pueblo has issued a Fire Weather Watch for gusty winds and low relative humidity, which is in effect from Friday morning through Friday evening. * AFFECTED AREA...Fire Weather Zones 222, 224, 226, 227, 228, 229 and 230. * WINDS...West 15 to 25 mph with gusts up to 45 mph. * RELATIVE HUMIDITY...As low as 9 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.


Red Flag Warning issued March 12 at 12:31AM MDT until March 12 at 9:00PM MDT by NWS Pueblo CO

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

The National Weather Service in Pueblo has issued a Fire Weather Watch for gusty winds and low relative humidity, which is in effect from Friday morning through Friday evening. * AFFECTED AREA...Fire Weather Zones 222, 224, 226, 227, 228, 229 and 230. * WINDS...West 15 to 25 mph with gusts up to 45 mph. * RELATIVE HUMIDITY...As low as 9 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.


Red Flag Warning issued March 12 at 11:36AM MDT until March 13 at 8:00PM MDT by NWS Pueblo CO

Effective: Thu March 12, 2026, 11:36 AM
Expires: Fri March 13, 2026, 3:45 AM

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 8 PM MDT Friday. A Fire Weather Watch has also been issued. This Fire Weather Watch for gusty winds and low relative humidity is in effect from Saturday morning through Saturday evening. The Fire Weather Watch is no longer in effect. * AFFECTED AREA...Fire Weather Zones 222, 224, 226, 227, 228, 229 and 230. * WINDS...For today and tomorrow, West 10 to 20 mph with gusts to 35 mph. For Saturday, West 20 to 30 mph with gusts up to 50 mph. * RELATIVE HUMIDITY...As low as 9 percent. * IMPACTS...Extreme fire danger is expected. Fires could uncontrollably spread and be very destructive.

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.


Red Flag Warning issued March 12 at 11:36AM MDT until March 13 at 8:00PM MDT by NWS Pueblo CO

Effective: Thu March 12, 2026, 11:36 AM
Expires: Fri March 13, 2026, 3:45 AM

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 8 PM MDT Friday. A Fire Weather Watch has also been issued. This Fire Weather Watch for gusty winds and low relative humidity is in effect from Saturday morning through Saturday evening. * AFFECTED AREA...Fire Weather Zone 225. * WINDS...West 25 to 35 mph with gusts up to 65 mph. * RELATIVE HUMIDITY...As low as 10 percent. * IMPACTS...Extreme fire danger is expected. Fires could uncontrollably spread and be very destructive.

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.


Red Flag Warning issued March 12 at 11:36AM MDT until March 12 at 9:00PM MDT by NWS Pueblo CO

Effective: Thu March 12, 2026, 11:36 AM
Expires: Fri March 13, 2026, 3:45 AM

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 8 PM MDT Friday. A Fire Weather Watch has also been issued. This Fire Weather Watch for gusty winds and low relative humidity is in effect from Saturday morning through Saturday evening. The Fire Weather Watch is no longer in effect. * AFFECTED AREA...Fire Weather Zones 222, 224, 226, 227, 228, 229 and 230. * WINDS...For today and tomorrow, West 10 to 20 mph with gusts to 35 mph. For Saturday, West 20 to 30 mph with gusts up to 50 mph. * RELATIVE HUMIDITY...As low as 9 percent. * IMPACTS...Extreme fire danger is expected. Fires could uncontrollably spread and be very destructive.

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.
Thursday, March 12, 2026

Weather Forecast

Sunny
66.2°F
26.6°F
47.3°F
40%
0 in
0%
0%
17.2 mph
1.3


Air Quality

AQI: 1 - Good
PM2.5: 3.7 μg/m3
PM10: 5.4 μg/m3
Carbon Monoxide: 146.81 μg/m3
Nitrogen Dioxide: 4.61 μg/m3
Sulphur Dioxide: 1.31 μg/m3
Ozone: 100.04 μg/m3

Astronomical

Sunrise: 7:15 AM
Sun Transit: 12:00 AM
Sunset: 7:04 PM
Daylight: 11 hrs 49 mins
Moonrise: 3:34 AM
Moon Transit: 8:01 AM
Moonset: 12:31 AM
Moon Phase: Last Quarter
Moon Illumination: 25.6%

Best Times for Fishing or Hunting

Major Periods

7:31 AM - 10:01 AM
5:53 PM - 8:23 PM

Minor Periods

12:01 AM - 1:31 PM
3:04 AM - 4:34 AM

Action Rating: 3 out of 5

Friday, March 13, 2026

Weather Forecast

Partly Cloudy
68.5°F
39.9°F
53°F
31%
0 in
0%
0%
17.4 mph
1.3


Air Quality

AQI: 1 - Good
PM2.5: 2.89 μg/m3
PM10: 5.01 μg/m3
Carbon Monoxide: 125.37 μg/m3
Nitrogen Dioxide: 3.49 μg/m3
Sulphur Dioxide: 1.27 μg/m3
Ozone: 82.8 μg/m3

Astronomical

Sunrise: 7:14 AM
Sun Transit: 12:00 AM
Sunset: 7:05 PM
Daylight: 11 hrs 51 mins
Moonrise: 4:19 AM
Moon Transit: 8:53 AM
Moonset: 1:31 PM
Moon Phase: Waning Crescent
Moon Illumination: 16.4%

Best Times for Fishing or Hunting

Major Periods

8:23 AM - 10:53 AM
6:44 PM - 9:14 PM

Minor Periods

1:01 PM - 2:31 PM
3:49 AM - 5:19 AM

Action Rating: 3 out of 5

Saturday, March 14, 2026

Weather Forecast

Partly Cloudy
72.7°F
37.2°F
54.6°F
28%
0 in
0%
0%
28.6 mph
1.3


Air Quality

AQI: 1 - Good
PM2.5: 2.45 μg/m3
PM10: 4.32 μg/m3
Carbon Monoxide: 123.57 μg/m3
Nitrogen Dioxide: 3.74 μg/m3
Sulphur Dioxide: 1.25 μg/m3
Ozone: 86.6 μg/m3

Astronomical

Sunrise: 7:12 AM
Sun Transit: 12:00 AM
Sunset: 7:06 PM
Daylight: 11 hrs 54 mins
Moonrise: 4:58 AM
Moon Transit: 9:43 AM
Moonset: 2:36 PM
Moon Phase: Waning Crescent
Moon Illumination: 8.9%

Best Times for Fishing or Hunting

Major Periods

7:34 PM - 10:04 PM
9:13 AM - 11:43 AM

Minor Periods

2:06 PM - 3:36 PM
4:28 AM - 5:58 AM

Action Rating: 3 out of 5

Sunday, March 15, 2026

Weather Forecast

Sunny
42.3°F
25.4°F
39°F
32%
0 in
0%
0%
35.6 mph
0.9


Air Quality

AQI: 1 - Good
PM2.5: 3.25 μg/m3
PM10: 10.34 μg/m3
Carbon Monoxide: 129.83 μg/m3
Nitrogen Dioxide: 1.82 μg/m3
Sulphur Dioxide: 1.2 μg/m3
Ozone: 104.24 μg/m3

Astronomical

Sunrise: 7:11 AM
Sun Transit: 12:00 AM
Sunset: 7:07 PM
Daylight: 11 hrs 56 mins
Moonrise: 5:30 AM
Moon Transit: 10:32 AM
Moonset: 3:42 PM
Moon Phase: Waning Crescent
Moon Illumination: 3.6%

Best Times for Fishing or Hunting

Major Periods

8:22 PM - 10:52 PM
10:02 AM - 12:32 AM

Minor Periods

3:12 PM - 4:42 PM
5:00 AM - 6:30 AM

Action Rating: 2 out of 5

Monday, March 16, 2026

Weather Forecast

Sunny
49°F
23.7°F
34.2°F
34%
0 in
0%
0%
7.6 mph
1.1


Air Quality

AQI: 1 - Good
PM2.5: 2.91 μg/m3
PM10: 6.45 μg/m3
Carbon Monoxide: 173.75 μg/m3
Nitrogen Dioxide: 4.33 μg/m3
Sulphur Dioxide: 1.57 μg/m3
Ozone: 86.38 μg/m3

Astronomical

Sunrise: 7:09 AM
Sun Transit: 12:00 AM
Sunset: 7:08 PM
Daylight: 11 hrs 59 mins
Moonrise: 5:59 AM
Moon Transit: 11:20 AM
Moonset: 4:50 PM
Moon Phase: Waning Crescent
Moon Illumination: 0.6%

Best Times for Fishing or Hunting

Major Periods

9:09 PM - 11:39 PM
10:50 AM - 1:20 PM

Minor Periods

4:20 PM - 5:50 PM
5:29 AM - 6:59 AM

Action Rating: 3 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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