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

50°F

10°C

Humidity	100%
Wind Speed	NNW 1 MPH
Barometer	NA
Dewpoint	50°F (10°C)
Visibility	NA
Last update	10 Apr 04:52 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: 45 °F
Slight Chance
Rain
Friday
High: 51 °F
Showers
Friday Night
Low: 44 °F
Rain
Saturday
High: 45 °F
Rain/Snow
Saturday Night
Low: 40 °F
Rain
Sunday
High: 44 °F
Rain
Sunday Night
Low: 39 °F
Rain Likely
Monday
High: 46 °F
Rain Likely
Monday Night
Low: 36 °F
Chance Rain
then Mostly
Cloudy

Detailed Forecast

Overnight

A 20 percent chance of rain. Mostly cloudy, with a low around 45. Calm wind.

Friday

Rain and possibly a thunderstorm before 3pm, then showers and possibly a thunderstorm, mainly after 3pm. High near 51. Calm wind becoming southwest 5 to 9 mph in the afternoon. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.

Friday Night

Rain and possibly a thunderstorm. Snow level 5900 feet. Low around 44. South southwest wind 6 to 8 mph. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.

Saturday

Rain showers before 11am, then rain, possibly mixed with snow showers between 11am and 2pm, then rain showers after 2pm. Some thunder is also possible. Snow level 5500 feet lowering to 4800 feet in the afternoon . High near 45. Southwest wind 6 to 8 mph. Chance of precipitation is 100%. Little or no snow accumulation expected.

Saturday Night

Rain. Snow level 4900 feet. Low around 40. Light and variable wind becoming north northwest around 6 mph in the evening. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.

Sunday

Rain. Snow level 4800 feet. High near 44. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.

Sunday Night

Rain likely, mainly before 11pm. Snow level 5000 feet lowering to 4400 feet. Mostly cloudy, with a low around 39. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch possible.

Monday

Rain likely, mainly before 11am. Snow level 4400 feet. Mostly cloudy, with a high near 46.

Monday Night

A chance of rain before 11pm. Snow level 4700 feet lowering to 3900 feet after midnight . Mostly cloudy, with a low around 36.

Tuesday

Partly sunny, with a high near 50.

Tuesday Night

A chance of rain. Snow level 5100 feet lowering to 4300 feet after midnight . Mostly cloudy, with a low around 39.

Wednesday

A chance of rain. Snow level 4400 feet rising to 5300 feet in the afternoon. Partly sunny, with a high near 48.

Wednesday Night

A chance of rain. Snow level 5300 feet lowering to 4200 feet after midnight . Partly cloudy, with a low around 37.