National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Atmospheric River Bringing Heavy Rain to Southern California and Heavy Snow to the Sierra Nevadas

A strong atmospheric river will continue heavy rain over southern California through Friday. The heaviest rainfall is ongoing today in the Los Angeles Basin. Flash and urban flooding is possible. A prolonged heavy snowfall has begun over the Sierra Nevada Mountains and will continue through Friday. Travel will become increasingly difficult over the passes due to snow and strong winds. Read More >

Hazardous Weather Conditions

Current conditions at

Modesto City-County Airport - Harry Sham Field (KMOD)

Lat: 37.62549°NLon: 120.9549°WElev: 85.0ft.

Partly Cloudy

59°F

15°C

Humidity 67%
Wind Speed SE 16 MPH
Barometer 29.7 in (1005.76 mb)
Dewpoint 48°F (9°C)
Visibility 10.00 mi
Last update 25 Dec 12:00 AM PST
Extended Forecast for

Modesto CA

Flood Watch December 25, 12:22am until December 26, 04:00pm
High Wind Warning December 25, 12:22am until December 25, 04:00pm
Click here for hazard details and duration
Flood Watch
High Wind Warning
  •  
    Flood Watch December 25, 12:22am until December 26, 04:00pm
    High Wind Warning December 25, 12:22am until December 25, 04:00pm

    NOW: Multiple hazards in effect

    Click HERE for Details

  • Overnight

    Low: 56 °F

    Showers and
    Breezy

  • Christmas Day

    Christmas Day: Rain and possibly a thunderstorm before 1pm, then showers and possibly a thunderstorm, mainly after 1pm. High near 59. Breezy, with a south southeast wind 17 to 22 mph, with gusts as high as 37 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.

    High: 59 °F

    Showers and
    Breezy

  • Thursday Night

    Thursday Night: Rain before 1am, then showers and possibly a thunderstorm between 1am and 4am, then rain likely and possibly a thunderstorm after 4am. Low around 51. South wind 14 to 16 mph, with gusts as high as 30 mph. Chance of precipitation is 100%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 51 °F

    Showers

  • Friday

    Friday: Rain. High near 55. Southeast wind around 14 mph, with gusts as high as 23 mph. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.

    High: 55 °F

    Rain

  • Friday Night

    Friday Night: Rain likely, mainly before 10pm. Mostly cloudy, with a low around 46. Southeast wind around 5 mph. Chance of precipitation is 60%.

    Low: 46 °F

    Rain Likely
    then Chance
    Rain

  • Saturday

    Saturday: Partly sunny, with a high near 51.

    High: 51 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 40.

    Low: 40 °F

    Mostly Clear

  • Sunday

    Sunday: Mostly sunny, with a high near 49.

    High: 49 °F

    Mostly Sunny

Detailed Forecast

Overnight
Rain, mainly before 4am, then showers and possibly a thunderstorm after 4am. Low around 56. Breezy, with a southeast wind 22 to 25 mph, with gusts as high as 44 mph. Chance of precipitation is 100%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Christmas Day
Rain and possibly a thunderstorm before 1pm, then showers and possibly a thunderstorm, mainly after 1pm. High near 59. Breezy, with a south southeast wind 17 to 22 mph, with gusts as high as 37 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.
Thursday Night
Rain before 1am, then showers and possibly a thunderstorm between 1am and 4am, then rain likely and possibly a thunderstorm after 4am. Low around 51. South wind 14 to 16 mph, with gusts as high as 30 mph. Chance of precipitation is 100%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Friday
Rain. High near 55. Southeast wind around 14 mph, with gusts as high as 23 mph. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.
Friday Night
Rain likely, mainly before 10pm. Mostly cloudy, with a low around 46. Southeast wind around 5 mph. Chance of precipitation is 60%.
Saturday
Partly sunny, with a high near 51.
Saturday Night
Mostly clear, with a low around 40.
Sunday
Mostly sunny, with a high near 49.
Sunday Night
Mostly cloudy, with a low around 38.
Monday
Partly sunny, with a high near 49.
Monday Night
Mostly cloudy, with a low around 39.
Tuesday
Mostly sunny, with a high near 48.
Tuesday Night
Mostly cloudy, with a low around 41.
Wednesday
A slight chance of rain. Mostly cloudy, with a high near 49.
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ABOUT THIS FORECAST

 
Point Forecast:
Modesto CA
 37.63°N 121°W (Elev. 49 ft)
Last Update:
1:21 pm PST Dec 24, 2025
Forecast Valid:
12am PST Dec 25, 2025-6pm PST Dec 31, 2025
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation