Hawaii and Guam Concerns; Record Warmth Spreads Eastward; Heavy Snow for Sierra-Nevada; Severe Weather for the Plains

A very active spring pattern with tropical concerns across the Pacific. Heavy rainfall will continue to impact Hawaii this weekend. Meanwhile we continue to monitor a developing typhoon that may affect Guam into early next week. For the Lower 48, heavy snow for mountains of California this weekend, increase threat for severe thunderstorms next week for the Plains and record warmth spreads east. Read More >

Current conditions at

ILLINOIS VALLEY AIRPORT (SBFO3)

Lat: 42.10386°NLon: 123.68519°WElev: 1389.0ft.

46°F

8°C

Humidity	94%
Wind Speed	NE 1 MPH
Barometer	NA
Dewpoint	44°F (7°C)
Visibility	NA
Last update	12 Apr 09:52 AM PDT

More Information:

Local Forecast Office More Local Wx 3 Day History Hourly Weather Forecast

Extended Forecast for

17 Miles WNW Illinois Valley OR

Today
High: 43 °F
Chance Snow
then
Rain/Snow
Tonight
Low: 39 °F
Rain/Snow
Likely
Monday
High: 41 °F
Rain/Snow
Monday Night
Low: 36 °F
Chance
Rain/Snow
then Mostly
Cloudy
Tuesday
High: 42 °F
Slight Chance
Snow
Tuesday Night
Low: 39 °F
Snow then
Rain/Snow
Wednesday
High: 42 °F
Rain/Snow and
Breezy
Wednesday Night
Low: 31 °F
Rain/Snow
Likely then
Chance Snow
Thursday
High: 45 °F
Slight Chance
Snow then
Slight Chance
Rain/Snow

Detailed Forecast

Today

Rain and snow. Some thunder is also possible. Snow level rising to 4700 feet. High near 43. Light west northwest wind becoming west southwest 6 to 11 mph in the afternoon. Winds could gust as high as 20 mph. Chance of precipitation is 80%. Little or no snow accumulation expected.

Tonight

Rain likely, possibly mixed with snow, mainly after 5am. Snow level 4500 feet. Mostly cloudy, with a low around 39. West southwest wind 9 to 11 mph, with gusts as high as 20 mph. Chance of precipitation is 70%. Little or no snow accumulation expected.

Monday

Rain, possibly mixed with snow, mainly before 5pm. Snow level 4400 feet. High near 41. West wind 6 to 9 mph, with gusts as high as 18 mph. Chance of precipitation is 80%. Little or no snow accumulation expected.

Monday Night

A chance of rain and snow before 8pm, then a chance of snow between 8pm and 11pm. Mostly cloudy, with a low around 36. West southwest wind 6 to 10 mph becoming north northwest after midnight. Winds could gust as high as 18 mph. Chance of precipitation is 30%. Little or no snow accumulation expected.

Tuesday

A 20 percent chance of snow after 11am. Partly sunny, with a high near 42. Light west southwest wind increasing to 11 to 16 mph in the morning. Winds could gust as high as 21 mph.

Tuesday Night

Snow before 2am, then rain, possibly mixed with snow. Low around 39. Chance of precipitation is 90%. Little or no snow accumulation expected.

Wednesday

Rain before 11am, then snow, possibly mixed with rain. Snow level 5100 feet lowering to 4400 feet in the afternoon . High near 42. Breezy. Chance of precipitation is 100%. New snow accumulation of less than a half inch possible.

Wednesday Night

Rain and snow likely, becoming all snow after 8pm. Mostly cloudy, with a low around 31.

Thursday

A slight chance of snow before 2pm, then a slight chance of rain. Mostly sunny, with a high near 45.

Thursday Night

Mostly clear, with a low around 34.

Friday

Sunny, with a high near 53.

Friday Night

Partly cloudy, with a low around 39.

Saturday

A slight chance of rain. Snow level 4500 feet rising to 5600 feet in the afternoon. Mostly sunny, with a high near 53.