Water Temperature of the Arkansas River in Portland, CO

Current Water Temperature

44.8°F 7.1°C
Frigid Dangerously Cold
44.8°F
Frigid < 50°F
Cold 50°–60°
Cool 60°–70°
Comfortable 70°–80°
Warm 80°+

Severe hypothermia and cold water shock risk. Unprotected swimming causes rapid loss of dexterity in under 5 minutes.

Measurement Time: Saturday, November 14, 2026, 10:30 PM MST

Temperature Locations

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Local Points of Interest

Florence, CO; Penrose, CO

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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

42.6°F
Overcast
Conditions: Overcast
Humidity: 93%
Feels Like: 37.9°F
Wind: SE 5.5 mph
Wind Gusts: 6.7 mph
Pressure: 30.01 in
Precipitation: 0 in
Cloud Cover: 100%
Visibility: 7.6 mi
UV Index: 0

Five-Day Weather Forecast

Fog
Sun
H: 49°F
L: 39°F
Fog
Mon
H: 55°F
L: 38°F
Overcast
Tue
H: 66°F
L: 43°F
Overcast
Wed
H: 60°F
L: 41°F
Overcast
Thu
H: 58°F
L: 38°F

Air Quality

EPA Index 2 • Moderate

Air quality is acceptable. However, there may be a risk for some people, particularly those who are unusually sensitive to air pollution.

PM2.5
8 μg/m³
Good
PM10
8.3 μg/m³
Good
Ozone (O3)
50 μg/m³
Photochemical
NO2
6.4 μg/m³
Nitrogen Dioxide
SO2
0.1 μg/m³
Sulfur Dioxide
CO
138 μg/m³
Carbon Monoxide

Astronomical

Sun
10h 5m daylight
Sunrise 6:42 AM
Solar Noon 11:44 AM
Sunset 4:47 PM
Moon
Waxing Crescent • 31%
Moonrise 12:02 PM
Transit 5:00 PM
Moonset 10:05 PM

Best Times for Fishing or Hunting

Major Periods

4:06 AM - 6:36 AM
4:30 PM - 7:00 PM

Minor Periods

11:32 AM - 1:02 PM
9:35 PM - 11:05 PM
Action Rating:
Very Good 4/5
Sunday, November 15, 2026

Weather Forecast

Conditions: Fog
Average Temperature: 43.3°F
Average Humidity: 87%
Chance of Rain: 1%
Wind: 7.6 mph
UV Index: 4

Air Quality

EPA Index 2 • Moderate
PM2.5
5.5 μg/m³
Good
PM10
6 μg/m³
Good
Ozone (O3)
61.8 μg/m³
Photochemical
NO2
5.7 μg/m³
Nitrogen Dioxide
SO2
0.2 μg/m³
Sulfur Dioxide
CO
152.3 μg/m³
Carbon Monoxide

Astronomical

Sun
10h 5m daylight
Sunrise 6:42 AM
Solar Noon 11:44 AM
Sunset 4:47 PM
Moon
Waxing Crescent • 31%
Moonrise 12:02 PM
Transit 5:00 PM
Moonset 10:05 PM

Best Times for Fishing or Hunting

Major Periods

4:06 AM - 6:36 AM
4:30 PM - 7:00 PM

Minor Periods

11:32 AM - 1:02 PM
9:35 PM - 11:05 PM
Action Rating:
Very Good 4/5
Monday, November 16, 2026

Weather Forecast

Conditions: Fog
Average Temperature: 42.8°F
Average Humidity: 79%
Chance of Rain: 0%
Wind: 7.6 mph
UV Index: 4

Air Quality

EPA Index 1 • Good
PM2.5
3.6 μg/m³
Good
PM10
4.2 μg/m³
Good
Ozone (O3)
56.3 μg/m³
Photochemical
NO2
6.9 μg/m³
Nitrogen Dioxide
SO2
0.2 μg/m³
Sulfur Dioxide
CO
168.3 μg/m³
Carbon Monoxide

Astronomical

Sun
10h 4m daylight
Sunrise 6:43 AM
Solar Noon 11:44 AM
Sunset 4:47 PM
Moon
First Quarter • 42%
Moonrise 12:30 PM
Transit 5:44 PM
Moonset 11:06 PM

Best Times for Fishing or Hunting

Major Periods

4:52 AM - 7:22 AM
5:14 PM - 7:44 PM

Minor Periods

12:00 PM - 1:30 PM
10:36 PM - 12:06 AM
Action Rating:
Good Action 3/5
Tuesday, November 17, 2026

Weather Forecast

Conditions: Overcast
Average Temperature: 52.9°F
Average Humidity: 44%
Chance of Rain: 0%
Wind: 15.9 mph
UV Index: 3.7

Air Quality

EPA Index 1 • Good
PM2.5
3.4 μg/m³
Good
PM10
4 μg/m³
Good
Ozone (O3)
64.3 μg/m³
Photochemical
NO2
4.7 μg/m³
Nitrogen Dioxide
SO2
0.3 μg/m³
Sulfur Dioxide
CO
156.3 μg/m³
Carbon Monoxide

Astronomical

Sun
10h 2m daylight
Sunrise 6:44 AM
Solar Noon 11:45 AM
Sunset 4:46 PM
Moon
First Quarter • 54%
Moonrise 12:55 PM
Transit 6:27 PM
Moonset 1:20 AM

Best Times for Fishing or Hunting

Major Periods

5:35 AM - 8:05 AM
5:57 PM - 8:27 PM

Minor Periods

12:50 AM - 2:20 AM
12:25 PM - 1:55 PM
Action Rating:
Fair Action 2/5
Wednesday, November 18, 2026

Weather Forecast

Conditions: Overcast
Average Temperature: 49.8°F
Average Humidity: 34%
Chance of Rain: 1%
Wind: 27.9 mph
UV Index: 3.9

Air Quality

EPA Index 1 • Good
PM2.5
1.2 μg/m³
Good
PM10
1.6 μg/m³
Good
Ozone (O3)
82.2 μg/m³
Photochemical
NO2
2.6 μg/m³
Nitrogen Dioxide
SO2
0.2 μg/m³
Sulfur Dioxide
CO
140.1 μg/m³
Carbon Monoxide

Astronomical

Sun
10h 0m daylight
Sunrise 6:45 AM
Solar Noon 11:45 AM
Sunset 4:45 PM
Moon
First Quarter • 65%
Moonrise 1:18 PM
Transit 7:09 PM
Moonset 12:08 AM

Best Times for Fishing or Hunting

Major Periods

6:18 AM - 8:48 AM
6:39 PM - 9:09 PM

Minor Periods

12:48 PM - 2:18 PM
11:38 PM - 1:08 AM
Action Rating:
Good Action 3/5
Thursday, November 19, 2026

Weather Forecast

Conditions: Overcast
Average Temperature: 46.6°F
Average Humidity: 33%
Chance of Rain: 0%
Wind: 9.6 mph
UV Index: 3.7

Air Quality

EPA Index 1 • Good
PM2.5
1.8 μg/m³
Good
PM10
2.7 μg/m³
Good
Ozone (O3)
70.3 μg/m³
Photochemical
NO2
4.3 μg/m³
Nitrogen Dioxide
SO2
0.4 μg/m³
Sulfur Dioxide
CO
158.2 μg/m³
Carbon Monoxide

Astronomical

Sun
9h 58m daylight
Sunrise 6:46 AM
Solar Noon 11:45 AM
Sunset 4:45 PM
Moon
Waxing Gibbous • 75%
Moonrise 1:42 PM
Transit 7:52 PM
Moonset 1:10 AM

Best Times for Fishing or Hunting

Major Periods

7:01 AM - 9:31 AM
7:22 PM - 9:52 PM

Minor Periods

12:40 AM - 2:10 AM
1:12 PM - 2:42 PM
Action Rating:
Good Action 3/5
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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