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.

41°F

5°C

Humidity	100%
Wind Speed	SSW 1 MPH
Barometer	NA
Dewpoint	41°F (5°C)
Visibility	NA
Last update	12 Apr 03:52 AM PDT

More Information:

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

Extended Forecast for

8 Miles WNW Illinois Valley OR

Overnight
Low: 37 °F
Rain Likely
Sunday
High: 45 °F
Chance
Showers then
Showers
Sunday Night
Low: 38 °F
Rain Likely
Monday
High: 44 °F
Rain Likely
Monday Night
Low: 36 °F
Chance Rain
then Mostly
Cloudy
Tuesday
High: 47 °F
Partly Sunny
Tuesday Night
Low: 39 °F
Rain
Wednesday
High: 42 °F
Rain then
Rain/Snow
Wednesday Night
Low: 30 °F
Rain/Snow
Likely then
Chance Snow

Detailed Forecast

Overnight

Rain likely, mainly after 5am. Snow level 4200 feet. Mostly cloudy, with a low around 37. Light west wind. Chance of precipitation is 60%.

Sunday

Rain and thunderstorms before 2pm, then showers likely and possibly a thunderstorm between 2pm and 5pm, then a chance of rain and thunderstorms after 5pm. Snow level 4000 feet rising to 4800 feet in the afternoon. High near 45. Calm wind becoming west southwest 5 to 9 mph in the afternoon. Winds could gust as high as 18 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

Sunday Night

Rain likely, mainly before 9pm. Snow level 4600 feet. Mostly cloudy, with a low around 38. West southwest wind 6 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch possible.

Monday

Rain likely. Snow level 4200 feet rising to 4800 feet in the afternoon. Mostly cloudy, with a high near 44. West wind 5 to 7 mph, with gusts as high as 18 mph. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch possible.

Monday Night

A 30 percent chance of rain before 11pm. Snow level 4900 feet lowering to 3900 feet after midnight . Mostly cloudy, with a low around 36. West southwest wind around 6 mph becoming calm in the evening. Winds could gust as high as 20 mph.

Tuesday

Partly sunny, with a high near 47.

Tuesday Night

Rain, mainly after 11pm. Snow level 4200 feet. Low around 39. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.

Wednesday

Rain before 2pm, then rain, possibly mixed with snow. Snow level 5100 feet lowering to 4500 feet in the afternoon . Cloudy, with a high near 42.

Wednesday Night

Rain and snow likely, becoming all snow after 8pm. Mostly cloudy, with a low around 30.

Thursday

A slight chance of snow before 11am. Sunny, with a high near 48.

Thursday Night

Mostly clear, with a low around 32.

Friday

Sunny, with a high near 56.

Friday Night

Partly cloudy, with a low around 37.