Winter Returns Across the Northern Tier; Record Warmth for the Southwest

A large high pressure system will usher in cold air for this first day of March across the northern Plains, Great Lakes, Northeast and mid-Atlantic. Some wintry precipitation may evolve across the mid-Mississippi Valley, Ohio Valley and mid-Atlantic through Monday. Meanwhile, record warmth will spread across the Southwest, southern Plains through early this week. Read More >

Current conditions at

ILLINOIS VALLEY AIRPORT (SBFO3)

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

NA

51°F

11°C

Humidity 99%
Wind Speed NE 0 MPH
Barometer NA
Dewpoint 51°F (11°C)
Visibility NA
Last update 01 Mar 12:52 AM PST
Extended Forecast for

Illinois Valley OR

  • Overnight

    Overnight: A 20 percent chance of rain.  Patchy fog.  Otherwise, partly cloudy, with a low around 40. Calm wind.

    Low: 40 °F

    Slight Chance
    Rain and
    Patchy Fog

  • Monday

    Monday: A 30 percent chance of rain, mainly between noon and 3pm.  Patchy fog before 1pm.  Otherwise, mostly sunny, with a high near 59. Calm wind.

    High: 59 °F

    Chance Rain
    and Patchy
    Fog

  • Monday Night

    Monday Night: A 30 percent chance of rain after 4am.  Partly cloudy, with a low around 39. South southwest wind 3 to 5 mph.

    Low: 39 °F

    Partly Cloudy
    then Chance
    Rain

  • Tuesday

    Tuesday: A 30 percent chance of rain, mainly after 4pm.  Partly sunny, with a high near 57. Calm wind becoming southwest 5 to 8 mph in the morning.

    High: 57 °F

    Chance Rain

  • Tuesday Night

    Tuesday Night: Rain, mainly between 10pm and 4am, then showers and possibly a thunderstorm after 4am.  Low around 38. South southwest wind around 6 mph.  Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 38 °F

    Showers

  • Wednesday

    Wednesday: Showers and possibly a thunderstorm before 7am, then rain after 7am.  Snow level 4300 feet. High near 48. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.

    High: 48 °F

    Showers

  • Wednesday Night

    Wednesday Night: Rain, mainly before 10pm.  Areas of fog after 10pm. Snow level 3800 feet. Low around 34. Chance of precipitation is 80%.

    Low: 34 °F

    Rain and
    Areas Fog
    then Chance
    Rain and
    Areas Fog

  • Thursday

    Thursday: A chance of rain, mainly before 10am.  Areas of fog before 10am. Snow level 3300 feet rising to 4100 feet in the afternoon.  Otherwise, partly sunny, with a high near 54.

    High: 54 °F

    Chance Rain
    and Areas Fog

  • Thursday Night

    Thursday Night: A slight chance of rain.  Partly cloudy, with a low around 34.

    Low: 34 °F

    Slight Chance
    Rain

Detailed Forecast

Overnight
A 20 percent chance of rain. Patchy fog. Otherwise, partly cloudy, with a low around 40. Calm wind.
Monday
A 30 percent chance of rain, mainly between noon and 3pm. Patchy fog before 1pm. Otherwise, mostly sunny, with a high near 59. Calm wind.
Monday Night
A 30 percent chance of rain after 4am. Partly cloudy, with a low around 39. South southwest wind 3 to 5 mph.
Tuesday
A 30 percent chance of rain, mainly after 4pm. Partly sunny, with a high near 57. Calm wind becoming southwest 5 to 8 mph in the morning.
Tuesday Night
Rain, mainly between 10pm and 4am, then showers and possibly a thunderstorm after 4am. Low around 38. South southwest wind around 6 mph. Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Wednesday
Showers and possibly a thunderstorm before 7am, then rain after 7am. Snow level 4300 feet. High near 48. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.
Wednesday Night
Rain, mainly before 10pm. Areas of fog after 10pm. Snow level 3800 feet. Low around 34. Chance of precipitation is 80%.
Thursday
A chance of rain, mainly before 10am. Areas of fog before 10am. Snow level 3300 feet rising to 4100 feet in the afternoon. Otherwise, partly sunny, with a high near 54.
Thursday Night
A slight chance of rain. Partly cloudy, with a low around 34.
Friday
Partly sunny, with a high near 58.
Friday Night
Mostly cloudy, with a low around 40.
Saturday
Partly sunny, with a high near 64.
Saturday Night
Partly cloudy, with a low around 39.
Sunday
Mostly sunny, with a high near 62.
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ABOUT THIS FORECAST

 
Point Forecast:
Illinois Valley OR
 42.11°N 123.69°W (Elev. 1398 ft)
3:41 am PST Mar 2, 2026
4am PST Mar 2, 2026-6pm PDT Mar 8, 2026
 
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Additional Resources

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