Water Temperature of the Arkansas River in Portland, CO

Current Water Temperature

53.2°F

Measurement Time: Thursday, April 30, 2026, 6:30 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

42.9°F
Patchy rain nearby
Patchy rain nearby
40°F
42.9°F
81%
E 4.3 mph
4.9 mph
40°F
36.5°F
0 in
89%
6 mi
1019 mbar
2.5

Five Day Weather Forecast

Moderate rain
Thu
H: 49°F
L: 37°F
Patchy rain nearby
Fri
H: 56°F
L: 38°F
Sunny
Sat
H: 67°F
L: 35°F
Sunny
Sun
H: 72°F
L: 41°F
Patchy rain nearby
Mon
H: 69°F
L: 46°F

Air Quality

AQI: 1 - Good
PM2.5: 7.35 μg/m3
PM10: 7.85 μg/m3
Carbon Monoxide: 168.85 μg/m3
Nitrogen Dioxide: 2.85 μg/m3
Sulphur Dioxide: 1.35 μg/m3
Ozone: 106 μg/m3

Astronomical

Sunrise: 6:04 AM
Sun Transit: 12:57 AM
Sunset: 7:51 PM
Daylight: 13 hrs 47 mins
Moonrise: 7:17 PM
Moon Transit: 12:00 AM
Moonset: 5:12 AM
Moon Phase: Full
Moon Illumination: 99.0%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
9:35 AM - 12:05 AM

Minor Periods

6:47 PM - 8:17 PM
4:42 AM - 6:12 AM

Action Rating: 5 out of 5

Winter Weather Advisory issued April 30 at 12:13AM MDT until May 1 at 12:00PM MDT by NWS Pueblo CO

Effective: Thu April 30, 2026, 12:13 AM
Expires: Thu April 30, 2026, 8:15 AM

* WHAT...Snow expected. Total snow accumulations between 5 and 10 inches. * WHERE...Northwestern Fremont County Above 8500 Feet, Western Mosquito Range and eastern Lake and Chaffee counties above 9000 Feet. * WHEN...From 6 AM this morning to noon MDT Friday. * IMPACTS...Travel could be difficult, especially over mountain passes, with wet, slushy and snowpacked roads.

Slow down and use caution while traveling. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1.


Winter Storm Warning issued April 30 at 12:13AM MDT until May 1 at 12:00PM MDT by NWS Pueblo CO

Effective: Thu April 30, 2026, 12:13 AM
Expires: Thu April 30, 2026, 8:15 AM

* WHAT...Heavy snow. Snow accumulations between 8 and 16 inches, with the highest totals across the higher east facing slopes. * WHERE...Teller County and the Rampart Range including Pikes Peak. * WHEN...Until noon MDT Friday. * IMPACTS...Travel could be difficult, with wet, slushy and snowpacked roads. * ADDITIONAL DETAILS...There will be a lull in precipitation early Thursday morning, before precipitation increases in coverage and intensity again late Thursday morning and into the evening.

If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1.


Winter Storm Warning issued April 30 at 12:13AM MDT until May 2 at 12:00AM MDT by NWS Pueblo CO

Effective: Thu April 30, 2026, 12:13 AM
Expires: Thu April 30, 2026, 8:15 AM

* WHAT...Heavy snow expected. Total snow accumulations between 8 and 16 inches, with the highest totals across the higher east facing slopes. * WHERE...Sangre de Cristo Mountains, and Wet Mountains. * WHEN...From 6 AM this morning to midnight MDT Friday Night. * IMPACTS...Travel could be difficult, especially over mountain passes, with wet, slushy and snowpacked roads.

If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1.


Winter Weather Advisory issued April 30 at 5:30AM MDT until May 1 at 12:00PM MDT by NWS Pueblo CO

Effective: Thu April 30, 2026, 5:30 AM
Expires: Thu April 30, 2026, 1:30 PM

* WHAT...Snow expected. Total snow accumulations between 5 and 10 inches. * WHERE...Northwestern Fremont County Above 8500 Feet, Western Mosquito Range/East Chaffee County Above 9000 Feet, and Western Mosquito Range/East Lake County Above 11000 Feet. * WHEN...Until noon MDT Friday. * IMPACTS...Travel could be difficult, especially over mountain passes, with wet, slushy and snowpacked roads.

Slow down and use caution while traveling. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1.


Winter Storm Warning issued April 30 at 5:30AM MDT until May 1 at 12:00PM MDT by NWS Pueblo CO

Effective: Thu April 30, 2026, 5:30 AM
Expires: Thu April 30, 2026, 1:30 PM

* WHAT...Heavy snow. Snow accumulations between 8 and 16 inches, with the highest totals across the higher east facing slopes. * WHERE...Teller County and the Rampart Range including Pikes Peak. * WHEN...Until noon MDT Friday. * IMPACTS...Travel could be difficult, with wet, slushy and snowpacked roads. * ADDITIONAL DETAILS...There will be a lull in precipitation early Thursday morning, before precipitation increases in coverage and intensity again late Thursday morning and into the evening.

If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1.
Thursday, April 30, 2026

Weather Forecast

Moderate rain
49.2°F
37.4°F
42.4°F
82%
0.28 in
99%
0%
10.5 mph
3


Air Quality

AQI: 1 - Good
PM2.5: 4.79 μg/m3
PM10: 7.19 μg/m3
Carbon Monoxide: 147.89 μg/m3
Nitrogen Dioxide: 2.95 μg/m3
Sulphur Dioxide: 1.43 μg/m3
Ozone: 104.32 μg/m3

Astronomical

Sunrise: 6:04 AM
Sun Transit: 12:57 AM
Sunset: 7:51 PM
Daylight: 13 hrs 47 mins
Moonrise: 7:17 PM
Moon Transit: 12:00 AM
Moonset: 5:12 AM
Moon Phase: Full
Moon Illumination: 99.0%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
9:35 AM - 12:05 AM

Minor Periods

6:47 PM - 8:17 PM
4:42 AM - 6:12 AM

Action Rating: 5 out of 5

Friday, May 1, 2026

Weather Forecast

Patchy rain nearby
55.6°F
38.1°F
45.2°F
63%
0.06 in
92%
0%
8.9 mph
6.3


Air Quality

AQI: 1 - Good
PM2.5: 1.77 μg/m3
PM10: 1.86 μg/m3
Carbon Monoxide: 152.09 μg/m3
Nitrogen Dioxide: 3.08 μg/m3
Sulphur Dioxide: 1.23 μg/m3
Ozone: 94.48 μg/m3

Astronomical

Sunrise: 6:03 AM
Sun Transit: 12:57 AM
Sunset: 7:52 PM
Daylight: 13 hrs 49 mins
Moonrise: 8:20 PM
Moon Transit: 12:31 AM
Moonset: 5:38 AM
Moon Phase: Full
Moon Illumination: 100.0%

Best Times for Fishing or Hunting

Major Periods

12:01 AM - 2:31 AM
10:19 AM - 12:49 AM

Minor Periods

7:50 PM - 9:20 PM
5:08 AM - 6:38 AM

Action Rating: 4 out of 5

Saturday, May 2, 2026

Weather Forecast

Sunny
66.6°F
34.9°F
50.9°F
36%
0 in
0%
0%
9.6 mph
8.9


Air Quality

AQI: 1 - Good
PM2.5: 3.94 μg/m3
PM10: 4.49 μg/m3
Carbon Monoxide: 151.93 μg/m3
Nitrogen Dioxide: 4.53 μg/m3
Sulphur Dioxide: 1.33 μg/m3
Ozone: 105.4 μg/m3

Astronomical

Sunrise: 6:02 AM
Sun Transit: 12:57 AM
Sunset: 7:53 PM
Daylight: 13 hrs 51 mins
Moonrise: 9:21 PM
Moon Transit: 1:16 AM
Moonset: 6:08 AM
Moon Phase: Full
Moon Illumination: 98.4%

Best Times for Fishing or Hunting

Major Periods

12:46 AM - 3:16 AM
11:06 AM - 1:36 PM

Minor Periods

8:51 PM - 10:21 PM
5:38 AM - 7:08 AM

Action Rating: 4 out of 5

Sunday, May 3, 2026

Weather Forecast

Sunny
71.5°F
41.2°F
56.4°F
36%
0 in
0%
0%
8.7 mph
7.8


Air Quality

AQI: 1 - Good
PM2.5: 3.9 μg/m3
PM10: 6.23 μg/m3
Carbon Monoxide: 144.53 μg/m3
Nitrogen Dioxide: 4.45 μg/m3
Sulphur Dioxide: 1.58 μg/m3
Ozone: 117.48 μg/m3

Astronomical

Sunrise: 6:01 AM
Sun Transit: 12:56 AM
Sunset: 7:54 PM
Daylight: 13 hrs 53 mins
Moonrise: 10:22 PM
Moon Transit: 2:04 AM
Moonset: 6:44 AM
Moon Phase: Full
Moon Illumination: 94.4%

Best Times for Fishing or Hunting

Major Periods

1:34 AM - 4:04 AM
11:55 AM - 2:25 PM

Minor Periods

9:52 PM - 11:22 PM
6:14 AM - 7:44 AM

Action Rating: 4 out of 5

Monday, May 4, 2026

Weather Forecast

Patchy rain nearby
68.9°F
46.3°F
59.1°F
42%
0.01 in
87%
0%
9.4 mph
0


Air Quality

AQI: 1 - Good
PM2.5: 5.54 μg/m3
PM10: 8.47 μg/m3
Carbon Monoxide: 175.49 μg/m3
Nitrogen Dioxide: 7.48 μg/m3
Sulphur Dioxide: 1.56 μg/m3
Ozone: 95.69 μg/m3

Astronomical

Sunrise: 6:00 AM
Sun Transit: 12:56 AM
Sunset: 7:55 PM
Daylight: 13 hrs 55 mins
Moonrise: 11:18 PM
Moon Transit: 2:54 AM
Moonset: 7:25 AM
Moon Phase: Waning Gibbous
Moon Illumination: 88.0%

Best Times for Fishing or Hunting

Major Periods

2:24 AM - 4:54 AM
12:46 AM - 3:16 PM

Minor Periods

12:00 AM - 12:00 AM
6:55 AM - 8:25 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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