Weather for Rio Vista, California
Current Weather
Humidity: 20%
Feels Like: 93.5°F
Wind: W 11 mph
Wind Gusts: 12.6 mph
Precipitation: 0 in
Cloud Cover: 25%
Visibility: 9 mi
UV Index: 8.4
Five Day Weather Forecast
Thu
H: 106°F
L: 55°F
Fri
H: 106°F
L: 55°F
Sat
H: 96°F
L: 55°F
Sun
H: 96°F
L: 54°F
Mon
H: 97°F
L: 58°F
Air Quality
Nitrogen Dioxide: 30.53 μg/m3
Sulphur Dioxide: 6.85 μg/m3
Ozone: 57 μg/m3
Astronomical
Sun Transit: 1:12 PM
Sunset: 8:32 PM
Daylight: 14 hrs 40 mins
Moon Transit: 12:46 AM
Moonset: 5:20 AM
Moon Phase: Full
Moon Illumination: 99.8%
Best Times for Fishing or Hunting
Major Periods
12:16 AM - 2:46 AM8:21 AM - 10:51 AM
Minor Periods
8:31 PM - 10:01 PM4:50 AM - 6:20 AM
Action Rating: 5 out of 5
Heat Advisory issued July 9 at 1:49PM PDT until July 13 at 11:00PM PDT by NWS Sacramento CA
Effective: Wed July 9, 2025, 1:49 PM
Expires: Thu July 10, 2025, 5:00 PM
* WHAT...High temperatures up to 95 to 110 expected. Overnight low temperatures in the upper 60s to around 80. Widespread Moderate HeatRisk with areas of Major HeatRisk. * WHERE...Burney Basin, Northern and Central Sacramento Valley, Mountains Southwestern Shasta County to Western Colusa County, Northeast Foothills, Shasta Lake Area / Northern Shasta County, and Western Plumas County/Lassen Park. * WHEN...From 11 AM Friday to 11 PM PDT Sunday. * IMPACTS...Heat related illnesses increase significantly during heat events, particularly for those working or participating in outdoor activities.
Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors, especially those more susceptible to heat impacts.
Heat Advisory issued July 9 at 1:49PM PDT until July 13 at 11:00PM PDT by NWS Sacramento CA
Effective: Wed July 9, 2025, 1:49 PM
Expires: Thu July 10, 2025, 5:00 PM
* WHAT...High temperatures up to 95 to 110 expected. Overnight low temperatures in the upper 60s to around 80. Widespread Moderate HeatRisk with areas of Major HeatRisk. * WHERE...Burney Basin, Northern and Central Sacramento Valley, Mountains Southwestern Shasta County to Western Colusa County, Northeast Foothills, Shasta Lake Area / Northern Shasta County, and Western Plumas County/Lassen Park. * WHEN...From 11 AM Friday to 11 PM PDT Sunday. * IMPACTS...Heat related illnesses increase significantly during heat events, particularly for those working or participating in outdoor activities.
Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors, especially those more susceptible to heat impacts.
Weather Forecast
Average Temperature: 78°F
Average Humidity: 53%
Wind: 15.2 mph
UV Index: 2.8
Air Quality
Nitrogen Dioxide: 18.9 μg/m3
Sulphur Dioxide: 5.24 μg/m3
Ozone: 69.44 μg/m3
Astronomical
Sun Transit: 1:12 PM
Sunset: 8:32 PM
Daylight: 14 hrs 40 mins
Moon Transit: 12:46 AM
Moonset: 5:20 AM
Moon Phase: Full
Moon Illumination: 99.8%
Best Times for Fishing or Hunting
Major Periods
12:16 AM - 2:46 AM8:21 AM - 10:51 AM
Minor Periods
8:31 PM - 10:01 PM4:50 AM - 6:20 AM
Action Rating: 5 out of 5
Weather Forecast
Average Temperature: 77.7°F
Average Humidity: 53%
Wind: 16.6 mph
UV Index: 2.8
Air Quality
Nitrogen Dioxide: 21.88 μg/m3
Sulphur Dioxide: 6.82 μg/m3
Ozone: 71.96 μg/m3
Astronomical
Sun Transit: 1:12 PM
Sunset: 8:32 PM
Daylight: 14 hrs 38 mins
Moon Transit: 1:40 AM
Moonset: 6:26 AM
Moon Phase: Full
Moon Illumination: 97.4%
Best Times for Fishing or Hunting
Major Periods
1:10 AM - 3:40 AM9:14 AM - 11:44 AM
Minor Periods
9:09 PM - 10:39 PM5:56 AM - 7:26 AM
Action Rating: 4 out of 5
Weather Forecast
Average Temperature: 72.5°F
Average Humidity: 60%
Wind: 20.8 mph
UV Index: 2.8
Air Quality
Nitrogen Dioxide: 19.8 μg/m3
Sulphur Dioxide: 6.5 μg/m3
Ozone: 73.36 μg/m3
Astronomical
Sun Transit: 1:12 PM
Sunset: 8:31 PM
Daylight: 14 hrs 37 mins
Moon Transit: 2:33 AM
Moonset: 7:35 AM
Moon Phase: Full
Moon Illumination: 92.7%
Best Times for Fishing or Hunting
Major Periods
2:03 AM - 4:33 AM10:06 AM - 12:36 AM
Minor Periods
9:41 PM - 11:11 PM7:05 AM - 8:35 AM
Action Rating: 3 out of 5
Weather Forecast
Average Temperature: 71.2°F
Average Humidity: 58%
Wind: 19.5 mph
UV Index: 2.8
Air Quality
Nitrogen Dioxide: 16.46 μg/m3
Sulphur Dioxide: 5.24 μg/m3
Ozone: 70.24 μg/m3
Astronomical
Sun Transit: 1:12 PM
Sunset: 8:31 PM
Daylight: 14 hrs 36 mins
Moon Transit: 3:23 AM
Moonset: 8:44 AM
Moon Phase: Waning Gibbous
Moon Illumination: 85.7%
Best Times for Fishing or Hunting
Major Periods
2:53 AM - 5:23 AM10:55 AM - 1:25 PM
Minor Periods
10:09 PM - 11:39 PM8:14 AM - 9:44 AM
Action Rating: 2 out of 5
Weather Forecast
Average Temperature: 74.8°F
Average Humidity: 46%
Wind: 20.1 mph
UV Index: 0
Air Quality
Nitrogen Dioxide: 22.73 μg/m3
Sulphur Dioxide: 4.87 μg/m3
Ozone: 61.77 μg/m3
Astronomical
Sun Transit: 1:12 PM
Sunset: 8:30 PM
Daylight: 14 hrs 35 mins
Moon Transit: 4:10 AM
Moonset: 9:53 AM
Moon Phase: Waning Gibbous
Moon Illumination: 76.9%
Best Times for Fishing or Hunting
Major Periods
3:40 AM - 6:10 AM11:42 AM - 2:12 PM
Minor Periods
12:00 AM - 12:00 AM9:23 AM - 10:53 AM
Action Rating: 3 out of 5