Water Temperature of the Arkansas River in Portland, CO

Current Water Temperature

59.0°F

Measurement Time: Tuesday, April 14, 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

67°F
Sunny
Sunny
67°F
67°F
20%
SW 28.9 mph
33.2 mph
67°F
25.7°F
0 in
1%
6 mi
1003 mbar
3.7

Five Day Weather Forecast

Sunny
Tue
H: 69°F
L: 37°F
Sunny
Wed
H: 69°F
L: 33°F
Sunny
Thu
H: 77°F
L: 35°F
Overcast
Fri
H: 41°F
L: 30°F
Sunny
Sat
H: 59°F
L: 23°F

Air Quality

AQI: 1 - Good
PM2.5: 2.95 μg/m3
PM10: 5.25 μg/m3
Carbon Monoxide: 135.85 μg/m3
Nitrogen Dioxide: 3.75 μg/m3
Sulphur Dioxide: 1.25 μg/m3
Ozone: 124 μg/m3

Astronomical

Sunrise: 6:26 AM
Sun Transit: 1:00 PM
Sunset: 7:36 PM
Daylight: 13 hrs 10 mins
Moonrise: 4:50 AM
Moon Transit: 10:41 AM
Moonset: 4:45 PM
Moon Phase: Waning Crescent
Moon Illumination: 1.9%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
10:11 AM - 12:41 AM

Minor Periods

4:15 PM - 5:45 PM
4:20 AM - 5:50 AM

Action Rating: 2 out of 5

Fire Weather Watch issued April 14 at 12:07AM MDT until April 16 at 9:00PM MDT by NWS Pueblo CO

Effective: Tue April 14, 2026, 12:07 AM
Expires: Tue April 14, 2026, 4:15 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 Thursday morning through Thursday evening. * AFFECTED AREA...Fire Weather Zones 220, 221, 222, 224, 225 and 226. * TIMING...From Thursday morning through Thursday evening. * WINDS...Southwest 25 to 35 mph with gusts up to 50 mph. * RELATIVE HUMIDITY...As low as 9 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.


Red Flag Warning issued April 14 at 12:07AM MDT until April 14 at 8:00PM MDT by NWS Pueblo CO

Effective: Tue April 14, 2026, 12:07 AM
Expires: Tue April 14, 2026, 4:15 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 Thursday morning through Thursday evening. * AFFECTED AREA...Fire Weather Zones 227, 228, 229, 230, 231, 232, 233, 234, 235, 236 and 237. * TIMING...For the Red Flag Warning, from 11 AM this morning to 8 PM MDT this evening. For the Fire Weather Watch, from Thursday morning through Thursday evening. * WINDS...West 20 to 30 mph with gusts up to 45 mph. * RELATIVE HUMIDITY...As low as 7 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 April 14 at 12:07AM MDT until April 16 at 9:00PM MDT by NWS Pueblo CO

Effective: Tue April 14, 2026, 12:07 AM
Expires: Tue April 14, 2026, 4:15 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 Thursday morning through Thursday evening. * AFFECTED AREA...Fire Weather Zones 227, 228, 229, 230, 231, 232, 233, 234, 235, 236 and 237. * TIMING...For the Red Flag Warning, from 11 AM this morning to 8 PM MDT this evening. For the Fire Weather Watch, from Thursday morning through Thursday evening. * WINDS...West 20 to 30 mph with gusts up to 45 mph. * RELATIVE HUMIDITY...As low as 7 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.
Tuesday, April 14, 2026

Weather Forecast

Sunny
68.5°F
37.4°F
53.6°F
44%
0 in
0%
0%
28.9 mph
1.9


Air Quality

AQI: 1 - Good
PM2.5: 4.11 μg/m3
PM10: 7.27 μg/m3
Carbon Monoxide: 131.97 μg/m3
Nitrogen Dioxide: 3.09 μg/m3
Sulphur Dioxide: 1.32 μg/m3
Ozone: 105.6 μg/m3

Astronomical

Sunrise: 6:26 AM
Sun Transit: 1:00 PM
Sunset: 7:36 PM
Daylight: 13 hrs 10 mins
Moonrise: 4:50 AM
Moon Transit: 10:41 AM
Moonset: 4:45 PM
Moon Phase: Waning Crescent
Moon Illumination: 1.9%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
10:11 AM - 12:41 AM

Minor Periods

4:15 PM - 5:45 PM
4:20 AM - 5:50 AM

Action Rating: 2 out of 5

Wednesday, April 15, 2026

Weather Forecast

Sunny
69.4°F
32.9°F
51.5°F
37%
0 in
0%
0%
19.9 mph
1.9


Air Quality

AQI: 1 - Good
PM2.5: 2.64 μg/m3
PM10: 4.57 μg/m3
Carbon Monoxide: 132.73 μg/m3
Nitrogen Dioxide: 2.75 μg/m3
Sulphur Dioxide: 1.12 μg/m3
Ozone: 117.36 μg/m3

Astronomical

Sunrise: 6:24 AM
Sun Transit: 1:00 PM
Sunset: 7:37 PM
Daylight: 13 hrs 12 mins
Moonrise: 5:14 AM
Moon Transit: 9:33 AM
Moonset: 5:54 PM
Moon Phase: Waning Crescent
Moon Illumination: 0.1%

Best Times for Fishing or Hunting

Major Periods

9:03 AM - 11:33 AM
9:03 AM - 11:33 AM

Minor Periods

5:24 PM - 6:54 PM
4:44 AM - 6:14 AM

Action Rating: 3 out of 5

Thursday, April 16, 2026

Weather Forecast

Sunny
76.6°F
35.2°F
55.4°F
27%
0 in
0%
0%
22.6 mph
1.9


Air Quality

AQI: 1 - Good
PM2.5: 2.93 μg/m3
PM10: 5.22 μg/m3
Carbon Monoxide: 136.81 μg/m3
Nitrogen Dioxide: 3.47 μg/m3
Sulphur Dioxide: 1.23 μg/m3
Ozone: 100.8 μg/m3

Astronomical

Sunrise: 6:23 AM
Sun Transit: 1:00 PM
Sunset: 7:37 PM
Daylight: 13 hrs 15 mins
Moonrise: 5:40 AM
Moon Transit: 12:17 AM
Moonset: 7:07 PM
Moon Phase: New
Moon Illumination: 0.8%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
11:47 AM - 2:17 PM

Minor Periods

6:37 PM - 8:07 PM
5:10 AM - 6:40 AM

Action Rating: 5 out of 5

Friday, April 17, 2026

Weather Forecast

Overcast
40.5°F
30.4°F
37.6°F
48%
0 in
0%
0%
34.2 mph
1.9


Air Quality

AQI: 1 - Good
PM2.5: 3.79 μg/m3
PM10: 8.83 μg/m3
Carbon Monoxide: 146.51 μg/m3
Nitrogen Dioxide: 3.68 μg/m3
Sulphur Dioxide: 1.46 μg/m3
Ozone: 110.04 μg/m3

Astronomical

Sunrise: 6:21 AM
Sun Transit: 1:00 PM
Sunset: 7:38 PM
Daylight: 13 hrs 17 mins
Moonrise: 6:09 AM
Moon Transit: 1:09 PM
Moonset: 8:24 PM
Moon Phase: New
Moon Illumination: 4.1%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
12:39 AM - 3:09 PM

Minor Periods

7:54 PM - 9:24 PM
5:39 AM - 7:09 AM

Action Rating: 4 out of 5

Saturday, April 18, 2026

Weather Forecast

Sunny
59.1°F
23.2°F
40.6°F
19%
0 in
0%
0%
16.8 mph
1.8


Air Quality

AQI: 1 - Good
PM2.5: 1.98 μg/m3
PM10: 3.29 μg/m3
Carbon Monoxide: 147.12 μg/m3
Nitrogen Dioxide: 2.21 μg/m3
Sulphur Dioxide: 1.1 μg/m3
Ozone: 121.77 μg/m3

Astronomical

Sunrise: 6:20 AM
Sun Transit: 1:00 PM
Sunset: 7:39 PM
Daylight: 13 hrs 19 mins
Moonrise: 6:43 AM
Moon Transit: 2:06 PM
Moonset: 9:42 PM
Moon Phase: New
Moon Illumination: 1.2%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
1:36 PM - 4:06 PM

Minor Periods

9:12 PM - 10:42 PM
6:13 AM - 7:43 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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