Water Temperature of the Arkansas River in Portland, CO

Current Water Temperature

74.5°F

Measurement Time: Sunday, August 2, 2026, 5:30 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

93.7°F
Sunny
Sunny
90°F
90.1°F
15%
SSE 2.5 mph
2.8 mph
93.7°F
39.6°F
0 in
0%
6 mi
1009 mbar
10.6

Five Day Weather Forecast

Sunny
Sun
H: 97°F
L: 61°F
Sunny
Mon
H: 102°F
L: 65°F
Sunny
Tue
H: 85°F
L: 59°F
Sunny
Wed
H: 98°F
L: 57°F
Sunny
Thu
H: 93°F
L: 56°F

Air Quality

AQI: 1 - Good
PM2.5: 4.6 μg/m3
PM10: 5.9 μg/m3
Carbon Monoxide: 112 μg/m3
Nitrogen Dioxide: 0.5 μg/m3
Sulphur Dioxide: 0.8 μg/m3
Ozone: 125 μg/m3

Astronomical

Sunrise: 6:03 AM
Sun Transit: 1:06 PM
Sunset: 8:09 PM
Daylight: 14 hrs 6 mins
Moonrise: 10:10 PM
Moon Transit: 3:51 AM
Moonset: 10:05 AM
Moon Phase: Waning Gibbous
Moon Illumination: 75.9%

Best Times for Fishing or Hunting

Major Periods

3:21 AM - 5:51 AM
4:20 PM - 6:50 PM

Minor Periods

9:40 PM - 11:10 PM
9:35 AM - 11:05 AM

Action Rating: 3 out of 5

Heat Advisory issued August 2 at 1:26AM MDT until August 3 at 8:00PM MDT by NWS Pueblo CO

Effective: Sun August 2, 2026, 1:26 AM
Expires: Sun August 2, 2026, 9:30 AM

* WHAT...Temperatures climbing to between 95 and 102 degrees Sunday afternoon. Temperatures between 97 and 105 on Monday. * WHERE...Eastern Fremont, El Paso and Pueblo Counties including Pueblo, Colorado Springs and Canon City. * WHEN...For the first Heat Advisory, from noon today to 8 PM MDT this evening. For the second Heat Advisory, from 9 AM to 8 PM MDT Monday. * IMPACTS...Hot temperatures may cause heat illnesses, especially in urban areas.

Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Take extra precautions when outside. Wear lightweight and loose fitting clothing. Try to limit strenuous activities to early morning or evening. Take action when you see symptoms of heat exhaustion and heat stroke.


Heat Advisory issued August 2 at 1:26AM MDT until August 2 at 8:00PM MDT by NWS Pueblo CO

Effective: Sun August 2, 2026, 1:26 AM
Expires: Sun August 2, 2026, 9:30 AM

* WHAT...Temperatures climbing to between 95 and 102 degrees Sunday afternoon. Temperatures between 97 and 105 on Monday. * WHERE...Eastern Fremont, El Paso and Pueblo Counties including Pueblo, Colorado Springs and Canon City. * WHEN...For the first Heat Advisory, from noon today to 8 PM MDT this evening. For the second Heat Advisory, from 9 AM to 8 PM MDT Monday. * IMPACTS...Hot temperatures may cause heat illnesses, especially in urban areas.

Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Take extra precautions when outside. Wear lightweight and loose fitting clothing. Try to limit strenuous activities to early morning or evening. Take action when you see symptoms of heat exhaustion and heat stroke.
Sunday, August 2, 2026

Weather Forecast

Sunny
97.2°F
61.2°F
78.7°F
29%
0 in
1%
0%
17.9 mph
11.4


Air Quality

AQI: 1 - Good
PM2.5: 5.49 μg/m3
PM10: 6.86 μg/m3
Carbon Monoxide: 119.75 μg/m3
Nitrogen Dioxide: 4.92 μg/m3
Sulphur Dioxide: 0.98 μg/m3
Ozone: 99.88 μg/m3

Astronomical

Sunrise: 6:03 AM
Sun Transit: 1:06 PM
Sunset: 8:09 PM
Daylight: 14 hrs 6 mins
Moonrise: 10:10 PM
Moon Transit: 3:51 AM
Moonset: 10:05 AM
Moon Phase: Waning Gibbous
Moon Illumination: 75.9%

Best Times for Fishing or Hunting

Major Periods

3:21 AM - 5:51 AM
4:20 PM - 6:50 PM

Minor Periods

9:40 PM - 11:10 PM
9:35 AM - 11:05 AM

Action Rating: 3 out of 5

Monday, August 3, 2026

Weather Forecast

Sunny
102.3°F
64.8°F
82°F
23%
0 in
1%
0%
23.9 mph
10.9


Air Quality

AQI: 1 - Good
PM2.5: 3.6 μg/m3
PM10: 4.91 μg/m3
Carbon Monoxide: 111.96 μg/m3
Nitrogen Dioxide: 4.51 μg/m3
Sulphur Dioxide: 0.7 μg/m3
Ozone: 95.67 μg/m3

Astronomical

Sunrise: 6:04 AM
Sun Transit: 1:06 PM
Sunset: 8:08 PM
Daylight: 14 hrs 4 mins
Moonrise: 10:35 PM
Moon Transit: 12:00 AM
Moonset: 11:10 AM
Moon Phase: Waning Gibbous
Moon Illumination: 65.6%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
12:00 AM - 12:00 AM

Minor Periods

10:05 PM - 11:35 PM
10:40 AM - 12:10 AM

Action Rating: 2 out of 5

Tuesday, August 4, 2026

Weather Forecast

Sunny
85.3°F
58.9°F
71.7°F
38%
0.02 in
36%
0%
15.4 mph
10.7


Air Quality

AQI: 1 - Good
PM2.5: 8.59 μg/m3
PM10: 11.37 μg/m3
Carbon Monoxide: 134.63 μg/m3
Nitrogen Dioxide: 4.85 μg/m3
Sulphur Dioxide: 1.07 μg/m3
Ozone: 93.04 μg/m3

Astronomical

Sunrise: 6:05 AM
Sun Transit: 1:06 PM
Sunset: 8:07 PM
Daylight: 14 hrs 2 mins
Moonrise: 11:02 PM
Moon Transit: 5:20 AM
Moonset: 12:18 AM
Moon Phase: Last Quarter
Moon Illumination: 54.6%

Best Times for Fishing or Hunting

Major Periods

4:50 AM - 7:20 AM
3:10 PM - 5:40 PM

Minor Periods

12:00 AM - 12:00 AM
11:48 AM - 1:18 PM

Action Rating: 2 out of 5

Wednesday, August 5, 2026

Weather Forecast

Sunny
97.8°F
57°F
76.4°F
33%
0 in
1%
0%
17.9 mph
10.6


Air Quality

AQI: 1 - Good
PM2.5: 8.86 μg/m3
PM10: 15.11 μg/m3
Carbon Monoxide: 137.91 μg/m3
Nitrogen Dioxide: 5 μg/m3
Sulphur Dioxide: 0.87 μg/m3
Ozone: 100.83 μg/m3

Astronomical

Sunrise: 6:06 AM
Sun Transit: 1:06 PM
Sunset: 8:06 PM
Daylight: 14 hrs mins
Moonrise: 12:02 AM
Moon Transit: 6:09 AM
Moonset: 1:29 PM
Moon Phase: Last Quarter
Moon Illumination: 43.2%

Best Times for Fishing or Hunting

Major Periods

5:39 AM - 8:09 AM
4:01 PM - 6:31 PM

Minor Periods

12:59 AM - 2:29 PM
12:00 AM - 12:00 AM

Action Rating: 3 out of 5

Thursday, August 6, 2026

Weather Forecast

Sunny
93.1°F
55.9°F
74.6°F
41%
0 in
1%
0%
14.5 mph
8


Air Quality

AQI: 1 - Good
PM2.5: 9.43 μg/m3
PM10: 19.77 μg/m3
Carbon Monoxide: 193.29 μg/m3
Nitrogen Dioxide: 5.64 μg/m3
Sulphur Dioxide: 0.8 μg/m3
Ozone: 81.29 μg/m3

Astronomical

Sunrise: 6:07 AM
Sun Transit: 1:05 PM
Sunset: 8:05 PM
Daylight: 13 hrs 58 mins
Moonrise: 12:35 AM
Moon Transit: 7:03 AM
Moonset: 2:43 PM
Moon Phase: Last Quarter
Moon Illumination: 32.3%

Best Times for Fishing or Hunting

Major Periods

6:33 AM - 9:03 AM
4:57 PM - 7:27 PM

Minor Periods

2:13 PM - 3:43 PM
12:00 AM - 12:00 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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