Water Temperature of the Big Thompson River in Estes Park, CO

Current Water Temperature

59.9°F

Measurement Time: Monday, July 20, 2026, 1:50 PM MDT

Temperature Locations

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Big Thompson River

Station Name: BIG THOMPSON BL MORAINE PARK NR ESTES PARK, CO
Data Source: Water Data - usgc.gov

Elevation Above Sea Level: 8,025 feet

Nearest Address:
Moraine Park Rd
Estes Park, CO 80517
Larimer County

GPS Coordinates: 40.3538611, -105.5841389

Nearby Water Temperatures

Fraser River, Tabernash, CO (27.7 mi)
Fraser River, Tabernash, CO (28.3 mi)
South Boulder Creek, Eldorado Springs, CO (32.5 mi)
South Platte River, Denver, CO (49.9 mi)
South Platte River, Englewood, CO (56.6 mi)
Yampa River, Steamboat Springs, CO (66.3 mi)
South Platte River, Roxborough Park, CO (68.7 mi)
Colorado River, Burns, CO (73.3 mi)
Eagle River, Edwards, CO (75.2 mi)
Encampment River, Encampment, WY (79.8 mi)
Eagle River, Gypsum, CO (87.7 mi)
Halfmoon Creek, Twin Lakes, CO (92.2 mi)
Arkansas River, Granite, CO (97.6 mi)
Roaring Fork River, Aspen, CO (103.3 mi)
Roaring Fork River, Basalt, CO (104.5 mi)

Weather for Estes Park, Colorado

Current Weather

77°F
Partly Cloudy
Partly Cloudy
68.5°F
76.6°F
31%
ENE 2.2 mph
2.3 mph
76.9°F
44.1°F
0 in
32%
6 mi
1014 mbar
0.5

Five Day Weather Forecast

Sunny
Mon
H: 83°F
L: 55°F
Partly Cloudy
Tue
H: 83°F
L: 52°F
Sunny
Wed
H: 79°F
L: 52°F
Patchy rain nearby
Thu
H: 75°F
L: 50°F
Sunny
Fri
H: 87°F
L: 53°F

Air Quality

AQI: 1 - Good
PM2.5: 4.8 μg/m3
PM10: 5.3 μg/m3
Carbon Monoxide: 111 μg/m3
Nitrogen Dioxide: 2.8 μg/m3
Sulphur Dioxide: 0.3 μg/m3
Ozone: 108 μg/m3

Astronomical

Sunrise: 5:49 AM
Sun Transit: 1:08 PM
Sunset: 8:28 PM
Daylight: 14 hrs 39 mins
Moonrise: 12:58 AM
Moon Transit: 6:26 PM
Moonset: 12:23 AM
Moon Phase: Waxing Crescent
Moon Illumination: 32.7%

Best Times for Fishing or Hunting

Major Periods

3:26 AM - 5:56 AM
5:56 PM - 8:26 PM

Minor Periods

12:28 AM - 1:58 PM
12:00 AM - 12:00 AM

Action Rating: 4 out of 5

Air Quality Alert issued July 19 at 8:10PM MDT by NWS Denver CO

Effective: Sun July 19, 2026, 8:10 PM
Expires: Mon July 20, 2026, 4:00 PM

The Colorado Department of Public Health and Environment has issued the following... WHAT...Ozone Action Day Alert. WHERE...Douglas, Jefferson, Denver, western Arapahoe, western Adams, Broomfield, Boulder, Larimer, and Weld Counties WHEN...400 PM Sunday July 19 to 400 PM Monday July 20 IMPACTS...Ozone Action Day Alert is now in effect for the Front Range Urban Corridor. Ozone levels are expected to reach the Unhealthy for Sensitive Groups category on Sunday and Monday in the northern Colorado Front Range. Elevated levels of ozone are possible from the Denver Metro area northward, including Fort Collins and Greeley. For Colorado air quality conditions, forecasts, and advisories, visit: https://www.colorado.gov/airquality/colorado_summary.aspx If possible, please help us reduce ozone pollution by limiting driving gas and diesel-powered vehicles until at least 4 p.m. Monday, July 20, 2026. Colorado is also addressing ozone pollution through state policies. For more information about health impacts and how ozone pollution forms in Colorado, visit: https://cdphe.colorado.gov/ozone- pollution-and-your-health HEALTH INFORMATION...Increasing likelihood of respiratory symptoms and breathing discomfort in active children and adults and people with lung disease, such as asthma. Active children and adults, and people with lung disease, such as asthma, should reduce prolonged or heavy outdoor exertion.


Heat Advisory issued July 20 at 3:24AM MDT until July 20 at 9:00PM MDT by NWS Denver CO

Effective: Mon July 20, 2026, 3:24 AM
Expires: Mon July 20, 2026, 6:30 PM

* WHAT...High Temperatures 99 to 103. * WHERE...Fort Collins, Boulder, Denver metro, and Greeley. * WHEN...Until 9 PM MDT this evening. * IMPACTS...Hot temperatures may cause heat illnesses.

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. To reduce risk during outdoor work, the Occupational Safety and Health Administration recommends scheduling frequent rest breaks in shaded or air conditioned environments. Anyone overcome by heat should be moved to a cool and shaded location. Heat stroke is an emergency! Call 9 1 1.


Air Quality Alert issued July 20 at 9:10AM MDT by NWS Denver CO

Effective: Mon July 20, 2026, 9:10 AM
Expires: Mon July 20, 2026, 4:00 PM

The Colorado Department of Public Health and Environment has issued the following... WHAT...Ozone Action Day Alert. WHERE...Douglas, Jefferson, Denver, western Arapahoe, western Adams, Broomfield, Boulder, Larimer, and Weld Counties WHEN...400 PM Sunday July 19 to 400 PM Monday July 20 IMPACTS...Ozone Action Day Alert is now in effect for the Front Range Urban Corridor. Ozone levels are expected to reach the Unhealthy for Sensitive Groups category on Sunday and Monday in the northern Colorado Front Range. Elevated levels of ozone are possible from the Denver Metro area northward, including Fort Collins and Greeley. For Colorado air quality conditions, forecasts, and advisories, visit: https://www.colorado.gov/airquality/colorado_summary.aspx If possible, please help us reduce ozone pollution by limiting driving gas and diesel-powered vehicles until at least 4 p.m. Monday, July 20, 2026. Colorado is also addressing ozone pollution through state policies. For more information about health impacts and how ozone pollution forms in Colorado, visit: https://cdphe.colorado.gov/ozone- pollution-and-your-health HEALTH INFORMATION...Increasing likelihood of respiratory symptoms and breathing discomfort in active children and adults and people with lung disease, such as asthma. Active children and adults, and people with lung disease, such as asthma, should reduce prolonged or heavy outdoor exertion.


Heat Advisory issued July 20 at 3:08PM MDT until July 20 at 9:00PM MDT by NWS Denver CO

Effective: Mon July 20, 2026, 3:08 PM
Expires: Mon July 20, 2026, 9:00 PM

* WHAT...High Temperatures 99 to 103. * WHERE...Fort Collins, Boulder, Denver metro, and Greeley. * WHEN...Until 9 PM MDT this evening. * IMPACTS...Hot temperatures may cause heat illnesses.

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. To reduce risk during outdoor work, the Occupational Safety and Health Administration recommends scheduling frequent rest breaks in shaded or air conditioned environments. Anyone overcome by heat should be moved to a cool and shaded location. Heat stroke is an emergency! Call 9 1 1.


Monday, July 20, 2026

Weather Forecast

Sunny
82.9°F
55.2°F
67.6°F
41%
0.05 in
57%
0%
10.3 mph
10.2


Air Quality

AQI: 1 - Good
PM2.5: 7.16 μg/m3
PM10: 8.26 μg/m3
Carbon Monoxide: 107.46 μg/m3
Nitrogen Dioxide: 4.28 μg/m3
Sulphur Dioxide: 0.29 μg/m3
Ozone: 93.5 μg/m3

Astronomical

Sunrise: 5:49 AM
Sun Transit: 1:08 PM
Sunset: 8:28 PM
Daylight: 14 hrs 39 mins
Moonrise: 12:58 AM
Moon Transit: 6:26 PM
Moonset: 12:23 AM
Moon Phase: Waxing Crescent
Moon Illumination: 32.7%

Best Times for Fishing or Hunting

Major Periods

3:26 AM - 5:56 AM
5:56 PM - 8:26 PM

Minor Periods

12:28 AM - 1:58 PM
12:00 AM - 12:00 AM

Action Rating: 4 out of 5

Tuesday, July 21, 2026

Weather Forecast

Partly Cloudy
82.5°F
52.1°F
66.3°F
50%
0.16 in
57%
0%
14.5 mph
12.3


Air Quality

AQI: 1 - Good
PM2.5: 5.8 μg/m3
PM10: 6.41 μg/m3
Carbon Monoxide: 108.58 μg/m3
Nitrogen Dioxide: 3.75 μg/m3
Sulphur Dioxide: 0.36 μg/m3
Ozone: 93.42 μg/m3

Astronomical

Sunrise: 5:50 AM
Sun Transit: 1:08 PM
Sunset: 8:27 PM
Daylight: 14 hrs 37 mins
Moonrise: 2:02 PM
Moon Transit: 7:10 PM
Moonset: 12:46 AM
Moon Phase: First Quarter
Moon Illumination: 43.7%

Best Times for Fishing or Hunting

Major Periods

4:10 AM - 6:40 AM
6:40 PM - 9:10 PM

Minor Periods

1:32 PM - 3:02 PM
12:00 AM - 12:00 AM

Action Rating: 2 out of 5

Wednesday, July 22, 2026

Weather Forecast

Sunny
79.1°F
51.7°F
62.1°F
66%
0.57 in
69%
0%
9.4 mph
9.8


Air Quality

AQI: 1 - Good
PM2.5: 4.75 μg/m3
PM10: 6.12 μg/m3
Carbon Monoxide: 111.33 μg/m3
Nitrogen Dioxide: 3.95 μg/m3
Sulphur Dioxide: 0.33 μg/m3
Ozone: 94.08 μg/m3

Astronomical

Sunrise: 5:51 AM
Sun Transit: 1:08 PM
Sunset: 8:26 PM
Daylight: 14 hrs 36 mins
Moonrise: 3:06 PM
Moon Transit: 7:56 PM
Moonset: 12:12 AM
Moon Phase: First Quarter
Moon Illumination: 55.0%

Best Times for Fishing or Hunting

Major Periods

4:54 AM - 7:24 AM
7:26 PM - 9:56 PM

Minor Periods

2:36 PM - 4:06 PM
12:00 AM - 12:00 AM

Action Rating: 2 out of 5

Thursday, July 23, 2026

Weather Forecast

Patchy rain nearby
75.4°F
50.1°F
63°F
63%
0.03 in
40%
0%
9.4 mph
10.3


Air Quality

AQI: 1 - Good
PM2.5: 3.84 μg/m3
PM10: 4.36 μg/m3
Carbon Monoxide: 113.33 μg/m3
Nitrogen Dioxide: 4.61 μg/m3
Sulphur Dioxide: 0.21 μg/m3
Ozone: 88.25 μg/m3

Astronomical

Sunrise: 5:52 AM
Sun Transit: 1:08 PM
Sunset: 8:26 PM
Daylight: 14 hrs 34 mins
Moonrise: 4:09 PM
Moon Transit: 8:44 PM
Moonset: 12:41 AM
Moon Phase: First Quarter
Moon Illumination: 66.1%

Best Times for Fishing or Hunting

Major Periods

5:41 AM - 8:11 AM
8:14 PM - 10:44 PM

Minor Periods

3:39 PM - 5:09 PM
12:11 AM - 1:41 AM

Action Rating: 4 out of 5

Friday, July 24, 2026

Weather Forecast

Sunny
86.6°F
52.5°F
68.1°F
45%
0.03 in
36%
0%
8.9 mph
11.8


Air Quality

AQI: 1 - Good
PM2.5: 3.31 μg/m3
PM10: 3.5 μg/m3
Carbon Monoxide: 150 μg/m3
Nitrogen Dioxide: 7.14 μg/m3
Sulphur Dioxide: 0.13 μg/m3
Ozone: 70 μg/m3

Astronomical

Sunrise: 5:53 AM
Sun Transit: 1:08 PM
Sunset: 8:25 PM
Daylight: 14 hrs 32 mins
Moonrise: 5:10 PM
Moon Transit: 9:34 PM
Moonset: 1:15 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 76.3%

Best Times for Fishing or Hunting

Major Periods

6:30 AM - 9:00 AM
9:04 PM - 11:34 PM

Minor Periods

4:40 PM - 6:10 PM
12:45 AM - 2:15 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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