Weather for Green River, Wyoming
Current Weather
48°F
Conditions: Overcast
Humidity: 32%
Feels Like: 38.2°F
Wind: W 39.1 mph
Wind Gusts: 45 mph
Humidity: 32%
Feels Like: 38.2°F
Wind: W 39.1 mph
Wind Gusts: 45 mph
Pressure: 29.78 in
Precipitation: 0 in
Cloud Cover: 100%
Visibility: 9 mi
UV Index: 0.6
Precipitation: 0 in
Cloud Cover: 100%
Visibility: 9 mi
UV Index: 0.6
Five Day Weather Forecast
Fri
H: 49°F
L: 25°F
Sat
H: 37°F
L: 27°F
Sun
H: 48°F
L: 28°F
Mon
H: 53°F
L: 33°F
Tue
H: 53°F
L: 34°F
Air Quality
AQI:
1 - Good
PM2.5:
3.35 μg/m3
PM10:
6.25 μg/m3
Carbon Monoxide: 115.85 μg/m3
Nitrogen Dioxide: 3.35 μg/m3
Sulphur Dioxide: 1.85 μg/m3
Ozone: 81 μg/m3
Nitrogen Dioxide: 3.35 μg/m3
Sulphur Dioxide: 1.85 μg/m3
Ozone: 81 μg/m3
Astronomical
Sunrise: 7:40 AM
Sun Transit: 12:15 AM
Sunset: 4:50 PM
Daylight: 9 hrs 11 mins
Sun Transit: 12:15 AM
Sunset: 4:50 PM
Daylight: 9 hrs 11 mins
Moonrise: 7:46 AM
Moon Transit: 12:00 AM
Moonset: 4:16 PM
Moon Phase: New
Moon Illumination: 1.1%
Moon Transit: 12:00 AM
Moonset: 4:16 PM
Moon Phase: New
Moon Illumination: 1.1%
Best Times for Fishing or Hunting
Major Periods
9:15 PM - 11:45 PM11:30 AM - 2:00 PM
Minor Periods
3:46 PM - 5:16 PM7:16 AM - 8:46 AM
Action Rating: 5 out of 5
High Wind Warning issued December 19 at 1:01AM MST until December 19 at 5:00PM MST by NWS Riverton WY
Effective: Fri December 19, 2025, 1:01 AM
Expires: Fri December 19, 2025, 5:00 PM
* WHAT...Southwest winds 35 to 45 mph with gusts up to 70 mph. * WHERE...Casper Mountain, Green Mountains and Rattlesnake Range, and Natrona County Lower Elevations. * WHEN...Until 11 PM MST this evening. * IMPACTS...Damaging winds may blow down trees and power lines. Travel could be difficult, especially for high profile vehicles. * ADDITIONAL DETAILS...Localized stronger winds up to 80 mph are possible for wind prone locations, like Outer Drive in southern Casper.
High Wind Warning issued December 19 at 1:01AM MST until December 19 at 5:00PM MST by NWS Riverton WY
Effective: Fri December 19, 2025, 1:01 AM
Expires: Fri December 19, 2025, 5:00 PM
* WHAT...Southwest winds 30 to 40 mph with gusts up to 60 mph. * WHERE...East Sweetwater County, Flaming Gorge, Rock Springs and Green River, and Upper Green River Basin. * WHEN...From 8 AM this morning to 5 PM MST this afternoon. * IMPACTS...Damaging winds may blow down trees and power lines. Travel could be difficult, especially for high profile vehicles.
Friday, December 19, 2025
Weather Forecast
Conditions: Partly Cloudy
Average Temperature: 33.8°F
Average Humidity: 68%
Average Temperature: 33.8°F
Average Humidity: 68%
Chance of Rain: 0%
Wind: 39.8 mph
UV Index: 0.3
Wind: 39.8 mph
UV Index: 0.3
Air Quality
AQI:
1 - Good
PM2.5:
2.84 μg/m3
PM10:
3.33 μg/m3
Carbon Monoxide: 118.49 μg/m3
Nitrogen Dioxide: 2.96 μg/m3
Sulphur Dioxide: 2.65 μg/m3
Ozone: 82.52 μg/m3
Nitrogen Dioxide: 2.96 μg/m3
Sulphur Dioxide: 2.65 μg/m3
Ozone: 82.52 μg/m3
Astronomical
Sunrise: 7:40 AM
Sun Transit: 12:15 AM
Sunset: 4:50 PM
Daylight: 9 hrs 11 mins
Sun Transit: 12:15 AM
Sunset: 4:50 PM
Daylight: 9 hrs 11 mins
Moonrise: 7:46 AM
Moon Transit: 12:00 AM
Moonset: 4:16 PM
Moon Phase: New
Moon Illumination: 1.1%
Moon Transit: 12:00 AM
Moonset: 4:16 PM
Moon Phase: New
Moon Illumination: 1.1%
Best Times for Fishing or Hunting
Major Periods
9:15 PM - 11:45 PM11:30 AM - 2:00 PM
Minor Periods
3:46 PM - 5:16 PM7:16 AM - 8:46 AM
Action Rating: 5 out of 5
Saturday, December 20, 2025
Weather Forecast
Conditions: Cloudy
Average Temperature: 31.8°F
Average Humidity: 78%
Average Temperature: 31.8°F
Average Humidity: 78%
Chance of Rain: 0%
Wind: 32.4 mph
UV Index: 0.2
Wind: 32.4 mph
UV Index: 0.2
Air Quality
AQI:
1 - Good
PM2.5:
2.26 μg/m3
PM10:
3.4 μg/m3
Carbon Monoxide: 124.41 μg/m3
Nitrogen Dioxide: 2.94 μg/m3
Sulphur Dioxide: 1.48 μg/m3
Ozone: 74.4 μg/m3
Nitrogen Dioxide: 2.94 μg/m3
Sulphur Dioxide: 1.48 μg/m3
Ozone: 74.4 μg/m3
Astronomical
Sunrise: 7:40 AM
Sun Transit: 12:15 AM
Sunset: 4:51 PM
Daylight: 9 hrs 10 mins
Sun Transit: 12:15 AM
Sunset: 4:51 PM
Daylight: 9 hrs 10 mins
Moonrise: 8:37 AM
Moon Transit: 12:53 AM
Moonset: 5:12 PM
Moon Phase: New
Moon Illumination: 0.0%
Moon Transit: 12:53 AM
Moonset: 5:12 PM
Moon Phase: New
Moon Illumination: 0.0%
Best Times for Fishing or Hunting
Major Periods
12:00 AM - 12:00 AM12:23 AM - 2:53 PM
Minor Periods
4:42 PM - 6:12 PM8:07 AM - 9:37 AM
Action Rating: 5 out of 5
Sunday, December 21, 2025
Weather Forecast
Conditions: Partly Cloudy
Average Temperature: 34.6°F
Average Humidity: 81%
Average Temperature: 34.6°F
Average Humidity: 81%
Chance of Rain: 0%
Wind: 22.8 mph
UV Index: 0.2
Wind: 22.8 mph
UV Index: 0.2
Air Quality
AQI:
1 - Good
PM2.5:
3.77 μg/m3
PM10:
4 μg/m3
Carbon Monoxide: 176.81 μg/m3
Nitrogen Dioxide: 8.16 μg/m3
Sulphur Dioxide: 1.39 μg/m3
Ozone: 56.12 μg/m3
Nitrogen Dioxide: 8.16 μg/m3
Sulphur Dioxide: 1.39 μg/m3
Ozone: 56.12 μg/m3
Astronomical
Sunrise: 7:41 AM
Sun Transit: 12:16 AM
Sunset: 4:51 PM
Daylight: 9 hrs 10 mins
Sun Transit: 12:16 AM
Sunset: 4:51 PM
Daylight: 9 hrs 10 mins
Moonrise: 9:20 AM
Moon Transit: 1:45 PM
Moonset: 6:15 PM
Moon Phase: New
Moon Illumination: 1.5%
Moon Transit: 1:45 PM
Moonset: 6:15 PM
Moon Phase: New
Moon Illumination: 1.5%
Best Times for Fishing or Hunting
Major Periods
12:00 AM - 12:00 AM1:15 PM - 3:45 PM
Minor Periods
5:45 PM - 7:15 PM8:50 AM - 10:20 AM
Action Rating: 3 out of 5
Monday, December 22, 2025
Weather Forecast
Conditions: Patchy rain nearby
Average Temperature: 39.3°F
Average Humidity: 74%
Average Temperature: 39.3°F
Average Humidity: 74%
Chance of Rain: 62%
Wind: 21.3 mph
UV Index: 0.1
Wind: 21.3 mph
UV Index: 0.1
Air Quality
AQI:
1 - Good
PM2.5:
8.77 μg/m3
PM10:
9.59 μg/m3
Carbon Monoxide: 138.24 μg/m3
Nitrogen Dioxide: 8.43 μg/m3
Sulphur Dioxide: 1.68 μg/m3
Ozone: 53.04 μg/m3
Nitrogen Dioxide: 8.43 μg/m3
Sulphur Dioxide: 1.68 μg/m3
Ozone: 53.04 μg/m3
Astronomical
Sunrise: 7:41 AM
Sun Transit: 12:16 AM
Sunset: 4:52 PM
Daylight: 9 hrs 10 mins
Sun Transit: 12:16 AM
Sunset: 4:52 PM
Daylight: 9 hrs 10 mins
Moonrise: 9:56 AM
Moon Transit: 2:35 PM
Moonset: 7:21 PM
Moon Phase: Waxing Crescent
Moon Illumination: 5.5%
Moon Transit: 2:35 PM
Moonset: 7:21 PM
Moon Phase: Waxing Crescent
Moon Illumination: 5.5%
Best Times for Fishing or Hunting
Major Periods
12:00 AM - 12:00 AM2:05 PM - 4:35 PM
Minor Periods
6:51 PM - 8:21 PM9:26 AM - 10:56 AM
Action Rating: 3 out of 5
Tuesday, December 23, 2025
Weather Forecast
Conditions: Sunny
Average Temperature: 38.4°F
Average Humidity: 61%
Average Temperature: 38.4°F
Average Humidity: 61%
Chance of Rain: 0%
Wind: 11.4 mph
UV Index: 0
Wind: 11.4 mph
UV Index: 0
Air Quality
AQI:
1 - Good
PM2.5:
8.21 μg/m3
PM10:
9.12 μg/m3
Carbon Monoxide: 167.58 μg/m3
Nitrogen Dioxide: 8.01 μg/m3
Sulphur Dioxide: 1.5 μg/m3
Ozone: 54.38 μg/m3
Nitrogen Dioxide: 8.01 μg/m3
Sulphur Dioxide: 1.5 μg/m3
Ozone: 54.38 μg/m3
Astronomical
Sunrise: 7:42 AM
Sun Transit: 12:17 AM
Sunset: 4:52 PM
Daylight: 9 hrs 11 mins
Sun Transit: 12:17 AM
Sunset: 4:52 PM
Daylight: 9 hrs 11 mins
Moonrise: 10:26 AM
Moon Transit: 3:22 PM
Moonset: 8:29 PM
Moon Phase: Waxing Crescent
Moon Illumination: 11.7%
Moon Transit: 3:22 PM
Moonset: 8:29 PM
Moon Phase: Waxing Crescent
Moon Illumination: 11.7%
Best Times for Fishing or Hunting
Major Periods
12:00 AM - 12:00 AM2:52 PM - 5:22 PM
Minor Periods
7:59 PM - 9:29 PM9:56 AM - 11:26 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.