Water Temperature of the Arkansas River in Portland, CO
Current Water Temperature
44.8°F
				Measurement Time: Friday, October 31, 2025, 6:30 AM MDT
Temperature Locations
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Local Points of Interest
Florence, CO; Penrose, COSponsored Content
Arkansas River
				Station Name: ARKANSAS RIVER AT PORTLAND, CO.								
Data Source: Water Data - usgc.gov				
Elevation Above Sea Level: 5,043 feet / 1,537 meters
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 (94.0 mi)
South Platte River, Denver, CO (98.4 mi)
Weather for Portland, Colorado
Current Weather
51.6°F
				
			Conditions: Partly cloudy
Humidity: 27%
Feels Like: 50.7°F
Wind: ESE 4 mph
Wind Gusts: 4.6 mph
		
		Humidity: 27%
Feels Like: 50.7°F
Wind: ESE 4 mph
Wind Gusts: 4.6 mph
			Pressure: 30.08 in
Precipitation: 0 in
Cloud Cover: 50%
Visibility: 9 mi
UV Index: 2.9
	Precipitation: 0 in
Cloud Cover: 50%
Visibility: 9 mi
UV Index: 2.9
Five Day Weather Forecast

Fri
H: 60°F
L: 28°F

Sat
H: 60°F
L: 27°F

Sun
H: 69°F
L: 36°F

Mon
H: 71°F
L: 44°F

Tue
H: 69°F
L: 35°F
Air Quality
PM2.5:
					
						4.25 μg/m3
						
					
				
										PM10:
					
						5.25 μg/m3
						
					
				
					
			Carbon Monoxide: 176.85 μg/m3
Nitrogen Dioxide: 8.15 μg/m3
Sulphur Dioxide: 2.35 μg/m3
Ozone: 65 μg/m3
	Nitrogen Dioxide: 8.15 μg/m3
Sulphur Dioxide: 2.35 μg/m3
Ozone: 65 μg/m3
Astronomical
			Sunrise: 7:26 AM
Sun Transit: 12:43 AM
Sunset: 6:01 PM
Daylight: 10 hrs 36 mins
		Sun Transit: 12:43 AM
Sunset: 6:01 PM
Daylight: 10 hrs 36 mins
			Moonrise: 3:23 PM
Moon Transit: 9:00 PM
Moonset: 1:36 AM
Moon Phase: First Quarter
Moon Illumination: 74.1%
	Moon Transit: 9:00 PM
Moonset: 1:36 AM
Moon Phase: First Quarter
Moon Illumination: 74.1%
Best Times for Fishing or Hunting
Major Periods
6:01 AM - 8:31 AM8:30 PM - 11:00 PM
Minor Periods
2:53 PM - 4:23 PM1:06 AM - 2:36 AM
Action Rating: 2 out of 5
Friday, October 31, 2025
				Weather Forecast
						Conditions: Overcast 
Average Temperature: 41.5°F
Average Humidity: 46%
					Average Temperature: 41.5°F
Average Humidity: 46%
						Chance of Rain: 0%
Wind: 6.3 mph
UV Index: 0.6
					
					Wind: 6.3 mph
UV Index: 0.6
Air Quality
AQI:
								
									1 - Good									
							
							PM2.5:
								
									4.12 μg/m3
									
							
							PM10:
								
									5.55 μg/m3
									
							
						
							Carbon Monoxide: 145.05 μg/m3
Nitrogen Dioxide: 8.27 μg/m3
Sulphur Dioxide: 2.06 μg/m3
Ozone: 64.84 μg/m3
					Nitrogen Dioxide: 8.27 μg/m3
Sulphur Dioxide: 2.06 μg/m3
Ozone: 64.84 μg/m3
Astronomical
							Sunrise: 7:26 AM
Sun Transit: 12:43 AM
Sunset: 6:01 PM
Daylight: 10 hrs 36 mins
						Sun Transit: 12:43 AM
Sunset: 6:01 PM
Daylight: 10 hrs 36 mins
							Moonrise: 3:23 PM
Moon Transit: 9:00 PM
Moonset: 1:36 AM
Moon Phase: First Quarter
Moon Illumination: 74.1%
					Moon Transit: 9:00 PM
Moonset: 1:36 AM
Moon Phase: First Quarter
Moon Illumination: 74.1%
Best Times for Fishing or Hunting
Major Periods
6:01 AM - 8:31 AM8:30 PM - 11:00 PM
Minor Periods
2:53 PM - 4:23 PM1:06 AM - 2:36 AM
Action Rating: 2 out of 5
Saturday, November 1, 2025
				Weather Forecast
						Conditions: Sunny
Average Temperature: 40.3°F
Average Humidity: 44%
					Average Temperature: 40.3°F
Average Humidity: 44%
						Chance of Rain: 0%
Wind: 6.5 mph
UV Index: 0.9
					
					Wind: 6.5 mph
UV Index: 0.9
Air Quality
AQI:
								
									1 - Good									
							
							PM2.5:
								
									4.47 μg/m3
									
							
							PM10:
								
									5.88 μg/m3
									
							
						
							Carbon Monoxide: 158.53 μg/m3
Nitrogen Dioxide: 8.99 μg/m3
Sulphur Dioxide: 1.96 μg/m3
Ozone: 63.12 μg/m3
					Nitrogen Dioxide: 8.99 μg/m3
Sulphur Dioxide: 1.96 μg/m3
Ozone: 63.12 μg/m3
Astronomical
							Sunrise: 7:27 AM
Sun Transit: 12:43 AM
Sunset: 6:00 PM
Daylight: 10 hrs 33 mins
						Sun Transit: 12:43 AM
Sunset: 6:00 PM
Daylight: 10 hrs 33 mins
							Moonrise: 3:48 PM
Moon Transit: 9:46 PM
Moonset: 2:46 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 83.4%
					Moon Transit: 9:46 PM
Moonset: 2:46 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 83.4%
Best Times for Fishing or Hunting
Major Periods
6:48 AM - 9:18 AM9:16 PM - 11:46 PM
Minor Periods
3:18 PM - 4:48 PM2:16 AM - 3:46 AM
Action Rating: 2 out of 5
Sunday, November 2, 2025
				Weather Forecast
						Conditions: Sunny
Average Temperature: 46.3°F
Average Humidity: 34%
					Average Temperature: 46.3°F
Average Humidity: 34%
						Chance of Rain: 0%
Wind: 6.9 mph
UV Index: 0
					
					Wind: 6.9 mph
UV Index: 0
Air Quality
AQI:
								
									1 - Good									
							
							PM2.5:
								
									3.19 μg/m3
									
							
							PM10:
								
									3.68 μg/m3
									
							
						
							Carbon Monoxide: 163.23 μg/m3
Nitrogen Dioxide: 8.3 μg/m3
Sulphur Dioxide: 1.35 μg/m3
Ozone: 55.15 μg/m3
					Nitrogen Dioxide: 8.3 μg/m3
Sulphur Dioxide: 1.35 μg/m3
Ozone: 55.15 μg/m3
Astronomical
							Sunrise: 7:28 AM
Sun Transit: 12:43 AM
Sunset: 5:59 PM
Daylight: 10 hrs 31 mins
						Sun Transit: 12:43 AM
Sunset: 5:59 PM
Daylight: 10 hrs 31 mins
							Moonrise: 4:14 PM
Moon Transit: 10:31 AM
Moonset: 3:56 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 90.9%
					Moon Transit: 10:31 AM
Moonset: 3:56 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 90.9%
Best Times for Fishing or Hunting
Major Periods
10:01 AM - 12:31 AM10:01 AM - 12:31 AM
Minor Periods
3:44 PM - 5:14 PM3:26 AM - 4:56 AM
Action Rating: 2 out of 5
Monday, November 3, 2025
				Weather Forecast
						Conditions: Sunny
Average Temperature: 53.3°F
Average Humidity: 34%
					Average Temperature: 53.3°F
Average Humidity: 34%
						Chance of Rain: 0%
Wind: 10.3 mph
UV Index: 4
					
					Wind: 10.3 mph
UV Index: 4
Air Quality
AQI:
								
									0 - 									
							
							PM2.5:
								
									0 μg/m3
									
							
							PM10:
								
									0 μg/m3
									
							
						
							Carbon Monoxide: 0 μg/m3
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3
					Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3
Astronomical
							Sunrise: 7:29 AM
Sun Transit: 12:43 AM
Sunset: 5:58 PM
Daylight: 10 hrs 29 mins
						Sun Transit: 12:43 AM
Sunset: 5:58 PM
Daylight: 10 hrs 29 mins
							Moonrise: 4:41 PM
Moon Transit: 11:26 PM
Moonset: 5:09 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 96.3%
					Moon Transit: 11:26 PM
Moonset: 5:09 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 96.3%
Best Times for Fishing or Hunting
Major Periods
12:00 AM - 12:00 AM12:00 AM - 12:00 AM
Minor Periods
4:11 PM - 5:41 PM4:39 AM - 6:09 AM
Action Rating: 3 out of 5
Tuesday, November 4, 2025
				Weather Forecast
						Conditions: Sunny
Average Temperature: 46.9°F
Average Humidity: 50%
					Average Temperature: 46.9°F
Average Humidity: 50%
						Chance of Rain: 0%
Wind: 8.3 mph
UV Index: 3
					
					Wind: 8.3 mph
UV Index: 3
Air Quality
AQI:
								
									0 - 									
							
							PM2.5:
								
									0 μg/m3
									
							
							PM10:
								
									0 μg/m3
									
							
						
							Carbon Monoxide: 0 μg/m3
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3
					Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3
Astronomical
							Sunrise: 7:30 AM
Sun Transit: 12:43 AM
Sunset: 5:57 PM
Daylight: 10 hrs 27 mins
						Sun Transit: 12:43 AM
Sunset: 5:57 PM
Daylight: 10 hrs 27 mins
							Moonrise: 5:12 PM
Moon Transit: 12:00 AM
Moonset: 6:26 AM
Moon Phase: Full
Moon Illumination: 99.4%
					Moon Transit: 12:00 AM
Moonset: 6:26 AM
Moon Phase: Full
Moon Illumination: 99.4%
Best Times for Fishing or Hunting
Major Periods
12:00 AM - 12:00 AM9:18 AM - 11:48 AM
Minor Periods
4:42 PM - 6:12 PM5:56 AM - 7:26 AM
Action Rating: 5 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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