Williams, CA 95987 Weather

Colusa County1:59 AM PDT39.13°N, 122.22°W

Current conditions

Light Rain Likely
58°
Light Rain Likely
Feels like 58°
High 69°·Low 55° tonight
WindN 9 mph
Humidity100%
Dew point58°
Cloud cover92%
UV index0 Low
Sunrise7:26 AM
Sunset6:22 PM

Observed at SAC NWR · 1 hr ago

Forecast

10-day

  • Overnight

    Rain likely before 5am. Mostly cloudy, with a low around 55. Northwest wind around 1 mph. Chance of precipitation is 60%. New rainfall amounts less than a tenth of an inch possible.

  • Thursday

    Rain likely. Mostly cloudy. High near 69, with temperatures falling to around 66 in the afternoon. South southeast wind 1 to 6 mph. Chance of precipitation is 70%. New rainfall amounts less than a tenth of an inch possible.

  • Thursday Night

    A chance of rain before 9pm. Mostly cloudy. Low around 52, with temperatures rising to around 54 overnight. North northwest wind 0 to 3 mph. Chance of precipitation is 40%. New rainfall amounts less than a tenth of an inch possible.

National Weather Service forecast updated 2 hrs ago.

Hourly

Hourly forecast
  1. Now Light Rain Likely 57°58%
  2. 2 AM Chance Light Rain 57°52%
  3. 3 AM Slight Chance Light Rain 57°23%
  4. 4 AM Chance Light Rain 56°26%
  5. 5 AM Mostly Cloudy 56°12%
  6. 6 AM Slight Chance Light Rain 56°15%
  7. 7 AM Slight Chance Light Rain 55°17%
  8. 8 AM Chance Light Rain 56°30%
  9. 9 AM Chance Light Rain 58°38%
  10. 10 AM Chance Light Rain 60°48%
  11. 11 AM Chance Light Rain 61°46%
  12. 12 PM Chance Light Rain 63°52%
  13. 1 PM Chance Light Rain 64°54%
  14. 2 PM Light Rain Likely 65°70%
  15. 3 PM Light Rain Likely 67°64%
  16. 4 PM Light Rain Likely 66°57%
  17. 5 PM Chance Light Rain 66°45%
  18. 6 PM Chance Light Rain 67°35%
  19. 7 PM Chance Light Rain 65°31%
  20. 8 PM Slight Chance Light Rain 63°16%
  21. 9 PM Mostly Cloudy 61°
  22. 10 PM Mostly Cloudy 59°
  23. 11 PM Partly Cloudy 58°
  24. Fri12 AM Partly Cloudy 57°

10-day forecast

Details
  1. TonightOct 21 Light Rain Likely Light Rain Likely58%55°
  2. TodayOct 22 Light Rain Likely Light Rain Likely70%52°69°
  3. FriOct 23 Sunny Sunny47°73°
  4. SatOct 24 Sunny Sunny43°77°
  5. SunOct 25 Sunny Sunny45°75°
  6. MonOct 26 Sunny Sunny46°75°
  7. TueOct 27 Mostly Sunny Mostly Sunny46°74°
  8. WedOct 28 Mostly Sunny Mostly Sunny73°
  9. ThuOct 29 Cloudy Cloudy55°75°
  10. FriOct 30 Cloudy Cloudy52°73°

Days after the National Weather Service's seven are MET Norway's outlook, a computer model with no forecaster's review.

Radar

Full map
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Weather news near Williams

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Air quality

52
Moderate
Fine particles (PM2.5)

Acceptable. Unusually sensitive people should consider limiting prolonged outdoor exertion.

Willows, CA reporting area · 1 hr ago. Data from AirNow (EPA and its state, local and tribal partners); preliminary and subject to change.

Sun & moon

Sunrise 7:26 AM
Sunset 6:22 PM
Daylight 10 h 55 min (−2 min 23 s tomorrow)
Waxing Gibbous · 84% lit
Moonrise 4:25 PM Moonset 3:40 AM
Full moon Oct 26 New moon Nov 9

Almanac

Monthly
Record high86° (2006)
Record low36° (1996)

Knoxville Creek California, records since 1985. Normals 1991–2020. Data from NOAA's Regional Climate Centers (ACIS).

Nearby

Forecasters' discussion

From the National Weather Service office in STO, issued 12 hrs ago

Key Messages

- Scattered showers, thunderstorms, and high elevation snow showers expected through late Thursday.

- Drier weather moves in Friday and into the weekend, with breezy north to east winds Friday.

- Ridge builds in over the weekend, with slight chances for showers in Shasta county.

.DISCUSSION...

...Today through Thursday...

Current radar has a swath of rain and isolated thunderstorms through the Coastal Range down toward the Sierra Foothills. The track is to the north-northwest. We have seen a few lightning strikes over the past couple of hours, but they remain few and far between storms. There are gaps of coverage in the rain as it moves through the area, but HIRES guidance continues to show the swath of rain filling in completely over the next several hours and begin to push toward the north and east as the main upper level system off the coast moves onshore. Instability has been lacking in the latest observations, with only up to 250 J/kg across the Valley, foothills, and mountains. This will likely continue for the rest of the afternoon. Cloud coverage is the key into keeping the instability lower than expected. None the less, moisture content is high and lift is present to development thunderstorms and at least maintain them through this evening. The question remains on if these storms will be able to sustain hail shafts long enough to produce nickel or even quarter size hail. As of right now, we are leaning toward small hail as a possibility and brief gusty winds in the strongest of storms. Brief heavy rain and frequent lightning will also be a hazard to watch out for.

Aviation

Showers and isolated thunderstorms will be possible through the afternoon and into the evening hours, with lowered ceilings. Ceilings should remain VFR, but chances are there for MVFR for all sites post 00z. Best timeframe for thunderstorms will be 2000z through 0400z for all sites. Winds will remain light throughout the day. Areas in and around thunderstorms may see erratic winds, brief moderate rain reducing visibilities and IFR ceilings. Otherwise, we are looking at a lull in activity later tonight around 09-10z through the mid morning hours. During this lull isolated to scattered showers at times for the sites. Near the end of the TAF period thunderstorm chances start to increase once again.

Sto Watches

None.

Forecasts, observations and alerts in the United States come from the National Weather Service (NOAA); radar from NOAA's Multi-Radar Multi-Sensor system; satellite imagery from NASA's Global Imagery Browse Services (GIBS) and NOAA's GOES satellites; the map from the U.S. Geological Survey's National Map; air quality from AirNow (EPA and its partners); hurricane information from the National Hurricane Center; climate normals and records from NOAA's Regional Climate Centers (ACIS). Forecasts outside the United States and the UV index: MET Norway (CC BY 4.0); observations outside the U.S.: airport reports via NOAA's Aviation Weather Center. Place names: GeoNames (CC BY 4.0). Data are copied on a schedule and may lag the sources; for warnings that affect your safety, follow your local National Weather Service office and emergency officials. Weather news is drawn from the 4Search index and reflects what the press published. Terms of use.