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

Current Water Temperature

46.0°F

Measurement Time: Wednesday, March 18, 2026, 3:05 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

45°F
Clear
Clear
38.8°F
51°F
33%
W 13 mph
27.2 mph
46.2°F
24.5°F
0 in
0%
9 mi
1029 mbar
0

Five Day Weather Forecast

Sunny
Wed
H: 62°F
L: 35°F
Sunny
Thu
H: 65°F
L: 40°F
Sunny
Fri
H: 66°F
L: 48°F
Sunny
Sat
H: 69°F
L: 48°F
Sunny
Sun
H: 56°F
L: 33°F

Air Quality

AQI: 1 - Good
PM2.5: 3.35 μg/m3
PM10: 4.45 μg/m3
Carbon Monoxide: 111.85 μg/m3
Nitrogen Dioxide: 2.35 μg/m3
Sulphur Dioxide: 1.05 μg/m3
Ozone: 104 μg/m3

Astronomical

Sunrise: 7:09 AM
Sun Transit: 12:00 AM
Sunset: 7:12 PM
Daylight: 12 hrs 4 mins
Moonrise: 6:53 AM
Moon Transit: 12:55 AM
Moonset: 7:09 PM
Moon Phase: New
Moon Illumination: 2.2%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
12:25 AM - 2:55 PM

Minor Periods

6:39 PM - 8:09 PM
6:23 AM - 7:53 AM

Action Rating: 3 out of 5

Red Flag Warning issued March 18 at 3:36AM MDT until March 18 at 7:00PM MDT by NWS Denver CO

Effective: Wed March 18, 2026, 3:36 AM
Expires: Wed March 18, 2026, 3:45 PM

* AFFECTED AREA...Fire Weather Zones 239, 240, 243, 244, 245, 248, 249, 250 and 251. * TIMING...From 11 AM this morning to 7 PM MDT this evening. * WINDS...Northwest 10 to 20 mph with gusts up to 30 mph. * RELATIVE HUMIDITY...As low as 8 percent. * IMPACTS...Conditions will be favorable for rapid fire spread. Avoid outdoor burning and any activity that may produce a spark and start a wildfire.

A Red Flag Warning means that critical fire weather conditions are either occurring now....or will shortly. A combination of strong winds...low relative humidity...and warm temperatures can contribute to extreme fire behavior.


Red Flag Warning issued March 18 at 12:29PM MDT until March 18 at 7:00PM MDT by NWS Denver CO

Effective: Wed March 18, 2026, 12:29 PM
Expires: Wed March 18, 2026, 7:00 PM

* AFFECTED AREA...Fire Weather Zones 239, 240, 243, 244, 245, 248, 249, 250 and 251. * TIMING...Until 7 PM MDT this evening. * WINDS...Northwest 10 to 20 mph with gusts around 30 mph. * RELATIVE HUMIDITY...As low as 9 percent. * IMPACTS...Conditions will be favorable for rapid fire spread. Avoid outdoor burning and any activity that may produce a spark and start a wildfire.

A Red Flag Warning means that critical fire weather conditions are either occurring now....or will shortly. A combination of strong winds...low relative humidity...and warm temperatures can contribute to extreme fire behavior.


Red Flag Warning issued March 18 at 3:36AM MDT until March 18 at 7:00PM MDT by NWS Denver CO

Effective: Wed March 18, 2026, 3:36 AM
Expires: Wed March 18, 2026, 3:45 PM

* AFFECTED AREA...Fire Weather Zones 238 and 242. * TIMING...For the Red Flag Warning, from 11 AM this morning to 7 PM MDT this evening. For the Fire Weather Watch, from Thursday morning through Thursday evening. * WINDS...Northwest 15 to 25 mph with gusts up to 40 mph. On Thursday, northwest wind gusts up to 30 mph. * RELATIVE HUMIDITY...As low as 8 percent both days. * IMPACTS...Conditions will be favorable for rapid fire spread. Avoid outdoor burning and any activity that may produce a spark and start a wildfire.

A Red Flag Warning means that critical fire weather conditions are either occurring now....or will shortly. A combination of strong winds...low relative humidity...and warm temperatures can contribute to extreme fire behavior. A Fire Weather Watch means that critical fire weather conditions are forecast to occur. Listen for later forecasts and possible Red Flag Warnings.


Fire Weather Watch issued March 18 at 3:36AM MDT until March 19 at 7:00PM MDT by NWS Denver CO

Effective: Wed March 18, 2026, 3:36 AM
Expires: Wed March 18, 2026, 3:45 PM

* AFFECTED AREA...Fire Weather Zones 238 and 242. * TIMING...For the Red Flag Warning, from 11 AM this morning to 7 PM MDT this evening. For the Fire Weather Watch, from Thursday morning through Thursday evening. * WINDS...Northwest 15 to 25 mph with gusts up to 40 mph. On Thursday, northwest wind gusts up to 30 mph. * RELATIVE HUMIDITY...As low as 8 percent both days. * IMPACTS...Conditions will be favorable for rapid fire spread. Avoid outdoor burning and any activity that may produce a spark and start a wildfire.

A Red Flag Warning means that critical fire weather conditions are either occurring now....or will shortly. A combination of strong winds...low relative humidity...and warm temperatures can contribute to extreme fire behavior. A Fire Weather Watch means that critical fire weather conditions are forecast to occur. Listen for later forecasts and possible Red Flag Warnings.


Red Flag Warning issued March 18 at 12:29PM MDT until March 18 at 7:00PM MDT by NWS Denver CO

Effective: Wed March 18, 2026, 12:29 PM
Expires: Wed March 18, 2026, 7:00 PM

The National Weather Service in Denver has issued a Red Flag Warning for wind and low relative humidity, which is in effect from 11 AM to 7 PM MDT Thursday. The Fire Weather Watch is no longer in effect. * AFFECTED AREA...Fire Weather Zones 238 and 242. * TIMING...For the first Red Flag Warning, until 7 PM MDT this evening. For the second Red Flag Warning, from 11 AM to 7 PM MDT Thursday. * WINDS...Northwest 15 to 25 mph with gusts up to 40 mph today, and gusts up to 30 mph on Thursday. * RELATIVE HUMIDITY...As low as 8 percent. * IMPACTS...Conditions will be favorable for rapid fire spread. Avoid outdoor burning and any activity that may produce a spark and start a wildfire.

A Red Flag Warning means that critical fire weather conditions are either occurring now....or will shortly. A combination of strong winds...low relative humidity...and warm temperatures can contribute to extreme fire behavior.
Wednesday, March 18, 2026

Weather Forecast

Sunny
61.7°F
34.7°F
48.4°F
40%
0 in
0%
0%
13 mph
1.7


Air Quality

AQI: 1 - Good
PM2.5: 4.02 μg/m3
PM10: 7.33 μg/m3
Carbon Monoxide: 125.29 μg/m3
Nitrogen Dioxide: 2.2 μg/m3
Sulphur Dioxide: 1.14 μg/m3
Ozone: 109.16 μg/m3

Astronomical

Sunrise: 7:09 AM
Sun Transit: 12:00 AM
Sunset: 7:12 PM
Daylight: 12 hrs 4 mins
Moonrise: 6:53 AM
Moon Transit: 12:55 AM
Moonset: 7:09 PM
Moon Phase: New
Moon Illumination: 2.2%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
12:25 AM - 2:55 PM

Minor Periods

6:39 PM - 8:09 PM
6:23 AM - 7:53 AM

Action Rating: 3 out of 5

Thursday, March 19, 2026

Weather Forecast

Sunny
64.8°F
39.9°F
52.5°F
37%
0 in
0%
0%
12.3 mph
1.8


Air Quality

AQI: 1 - Good
PM2.5: 3.01 μg/m3
PM10: 4.49 μg/m3
Carbon Monoxide: 116.53 μg/m3
Nitrogen Dioxide: 2.57 μg/m3
Sulphur Dioxide: 1.21 μg/m3
Ozone: 111.28 μg/m3

Astronomical

Sunrise: 7:07 AM
Sun Transit: 12:00 AM
Sunset: 7:13 PM
Daylight: 12 hrs 6 mins
Moonrise: 7:16 AM
Moon Transit: 12:00 AM
Moonset: 8:22 PM
Moon Phase: New
Moon Illumination: 0.3%

Best Times for Fishing or Hunting

Major Periods

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

Minor Periods

7:52 PM - 9:22 PM
6:46 AM - 8:16 AM

Action Rating: 4 out of 5

Friday, March 20, 2026

Weather Forecast

Sunny
66.2°F
47.7°F
55.3°F
31%
0 in
0%
0%
11.9 mph
1.8


Air Quality

AQI: 1 - Good
PM2.5: 4.01 μg/m3
PM10: 5.21 μg/m3
Carbon Monoxide: 118.17 μg/m3
Nitrogen Dioxide: 2.99 μg/m3
Sulphur Dioxide: 1.56 μg/m3
Ozone: 111.24 μg/m3

Astronomical

Sunrise: 7:05 AM
Sun Transit: 8:27 AM
Sunset: 7:14 PM
Daylight: 12 hrs 9 mins
Moonrise: 7:41 AM
Moon Transit: 2:32 PM
Moonset: 9:37 PM
Moon Phase: New
Moon Illumination: 2.8%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
2:02 PM - 4:32 PM

Minor Periods

9:07 PM - 10:37 PM
7:11 AM - 8:41 AM

Action Rating: 4 out of 5

Saturday, March 21, 2026

Weather Forecast

Sunny
68.9°F
48°F
57.4°F
25%
0 in
0%
0%
17.9 mph
1.8


Air Quality

AQI: 1 - Good
PM2.5: 3.85 μg/m3
PM10: 4.56 μg/m3
Carbon Monoxide: 117.85 μg/m3
Nitrogen Dioxide: 3.39 μg/m3
Sulphur Dioxide: 1.47 μg/m3
Ozone: 105.68 μg/m3

Astronomical

Sunrise: 7:04 AM
Sun Transit: 12:00 AM
Sunset: 7:15 PM
Daylight: 12 hrs 12 mins
Moonrise: 8:09 AM
Moon Transit: 3:24 PM
Moonset: 10:54 PM
Moon Phase: Waxing Crescent
Moon Illumination: 7.8%

Best Times for Fishing or Hunting

Major Periods

12:18 AM - 2:48 AM
2:54 PM - 5:24 PM

Minor Periods

10:24 PM - 11:54 PM
7:39 AM - 9:09 AM

Action Rating: 2 out of 5

Sunday, March 22, 2026

Weather Forecast

Sunny
56.2°F
32.8°F
44.8°F
43%
0 in
0%
0%
14.3 mph
1.2


Air Quality

AQI: 1 - Good
PM2.5: 3.97 μg/m3
PM10: 4.79 μg/m3
Carbon Monoxide: 122.7 μg/m3
Nitrogen Dioxide: 5.17 μg/m3
Sulphur Dioxide: 1.39 μg/m3
Ozone: 96.31 μg/m3

Astronomical

Sunrise: 7:02 AM
Sun Transit: 12:00 AM
Sunset: 7:17 PM
Daylight: 12 hrs 14 mins
Moonrise: 8:43 AM
Moon Transit: 4:21 PM
Moonset: 12:13 PM
Moon Phase: Waxing Crescent
Moon Illumination: 14.9%

Best Times for Fishing or Hunting

Major Periods

1:13 AM - 3:43 AM
3:51 PM - 6:21 PM

Minor Periods

12:00 AM - 12:00 AM
8:13 AM - 9:43 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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