Heavy Rainfall to Bring Flooding Threat to California; Heavy Snow in the Sierra

A strong atmospheric river will bring heavy rainfall to California through the holiday week. The heaviest rainfall is expected on Wednesday in the Los Angeles Basin. Flash and urban flooding is possible. A prolonged heavy snowfall is expected in the Sierra Nevada from the atmospheric river, raising concerns for major snow‐load impacts. Travel may be difficult to impossible over the passes. Read More >

Current conditions at

TUOLUMNE MEADOWS TUM (TUMC1)

Lat: 37.87639°NLon: 119.34806°WElev: 8654.0ft.

NA

32°F

0°C

Humidity 97%
Wind Speed SSW 1 MPH
Barometer NA
Dewpoint 31°F (-1°C)
Visibility NA
Last update 24 Dec 01:00 AM PST
Extended Forecast for

8 Miles WSW Conway Summit CA

Flood Watch December 24, 01:52am until December 26, 04:00pm
Winter Storm Warning December 24, 01:52am until December 26, 10:00pm
Click here for hazard details and duration
Flood Watch
Winter Storm Warning
  •  
    Flood Watch December 24, 01:52am until December 26, 04:00pm
    Winter Storm Warning December 24, 01:52am until December 26, 10:00pm

    NOW: Multiple hazards in effect

    Click HERE for Details

  • Overnight

    Low: 23 °F

    Heavy Snow
    and Windy

  • Wednesday

    Wednesday: Snow. The snow could be heavy at times.  Temperature rising to near 27 by noon, then falling to around 21 during the remainder of the day. Wind chill values as low as 5. Windy, with a south southwest wind 30 to 35 mph decreasing to 20 to 25 mph in the afternoon. Winds could gust as high as 50 mph.  Chance of precipitation is 100%. New snow accumulation of 18 to 24 inches possible.

    High: 27 °F

    Heavy Snow
    and Windy

  • Wednesday Night

    Wednesday Night: Snow before 10pm, then snow showers between 10pm and 4am, then snow after 4am. Some thunder is also possible.  Steady temperature around 22. Wind chill values as low as -1. Very windy, with a south southwest wind 35 to 40 mph increasing to 40 to 45 mph after midnight. Winds could gust as high as 60 mph.  Chance of precipitation is 100%. New snow accumulation of 10 to 16 inches possible.

    Low: 22 °F

    Snow and Very
    Windy

  • Christmas Day

    Christmas Day: Snow before 1pm, then snow showers after 1pm. The snow could be heavy at times. Some thunder is also possible.  High near 22. Wind chill values as low as -3. Very windy, with a south wind 35 to 45 mph, with gusts as high as 65 mph.  Chance of precipitation is 100%. New snow accumulation of 16 to 22 inches possible.

    High: 22 °F

    Heavy Snow
    and Very
    Windy

  • Thursday Night

    Thursday Night: Snow before 10pm, then snow showers between 10pm and 4am, then snow after 4am. The snow could be heavy at times. Some thunder is also possible.  Low around 17. Very windy, with a south southwest wind 40 to 45 mph, with gusts as high as 60 mph.  Chance of precipitation is 100%. New snow accumulation of 14 to 20 inches possible.

    Low: 17 °F

    Heavy Snow
    and Very
    Windy

  • Friday

    Friday: Snow. The snow could be heavy at times.  High near 19. Very windy, with a southwest wind 35 to 45 mph decreasing to 25 to 35 mph in the afternoon. Winds could gust as high as 55 mph.  Chance of precipitation is 100%. New snow accumulation of 4 to 8 inches possible.

    High: 19 °F

    Heavy Snow
    and Very
    Windy

  • Friday Night

    Friday Night: Snow likely, mainly before 10pm.  Mostly cloudy, with a low around 5. Breezy, with a west southwest wind 15 to 20 mph.  Chance of precipitation is 60%. New snow accumulation of less than one inch possible.

    Low: 5 °F

    Snow Likely
    and Breezy

  • Saturday

    Saturday: A 40 percent chance of snow, mainly before 4pm.  Partly sunny and cold, with a high near 19. Southwest wind 10 to 15 mph becoming north northwest in the afternoon.

    High: 19 °F

    Chance Snow

Detailed Forecast

Overnight
Snow. The snow could be heavy at times. Low around 23. Wind chill values as low as 6. Windy, with a south wind around 40 mph, with gusts as high as 50 mph. Chance of precipitation is 100%. Total nighttime snow accumulation of 8 to 12 inches possible.
Wednesday
Snow. The snow could be heavy at times. Temperature rising to near 27 by noon, then falling to around 21 during the remainder of the day. Wind chill values as low as 5. Windy, with a south southwest wind 30 to 35 mph decreasing to 20 to 25 mph in the afternoon. Winds could gust as high as 50 mph. Chance of precipitation is 100%. New snow accumulation of 18 to 24 inches possible.
Wednesday Night
Snow before 10pm, then snow showers between 10pm and 4am, then snow after 4am. Some thunder is also possible. Steady temperature around 22. Wind chill values as low as -1. Very windy, with a south southwest wind 35 to 40 mph increasing to 40 to 45 mph after midnight. Winds could gust as high as 60 mph. Chance of precipitation is 100%. New snow accumulation of 10 to 16 inches possible.
Christmas Day
Snow before 1pm, then snow showers after 1pm. The snow could be heavy at times. Some thunder is also possible. High near 22. Wind chill values as low as -3. Very windy, with a south wind 35 to 45 mph, with gusts as high as 65 mph. Chance of precipitation is 100%. New snow accumulation of 16 to 22 inches possible.
Thursday Night
Snow before 10pm, then snow showers between 10pm and 4am, then snow after 4am. The snow could be heavy at times. Some thunder is also possible. Low around 17. Very windy, with a south southwest wind 40 to 45 mph, with gusts as high as 60 mph. Chance of precipitation is 100%. New snow accumulation of 14 to 20 inches possible.
Friday
Snow. The snow could be heavy at times. High near 19. Very windy, with a southwest wind 35 to 45 mph decreasing to 25 to 35 mph in the afternoon. Winds could gust as high as 55 mph. Chance of precipitation is 100%. New snow accumulation of 4 to 8 inches possible.
Friday Night
Snow likely, mainly before 10pm. Mostly cloudy, with a low around 5. Breezy, with a west southwest wind 15 to 20 mph. Chance of precipitation is 60%. New snow accumulation of less than one inch possible.
Saturday
A 40 percent chance of snow, mainly before 4pm. Partly sunny and cold, with a high near 19. Southwest wind 10 to 15 mph becoming north northwest in the afternoon.
Saturday Night
A 20 percent chance of snow before 10pm. Partly cloudy, with a low around 7. Blustery, with a north wind 20 to 25 mph, with gusts as high as 30 mph.
Sunday
Sunny and cold, with a high near 22. Breezy, with a northeast wind 15 to 25 mph, with gusts as high as 30 mph.
Sunday Night
Mostly clear, with a low around 12. Blustery, with an east northeast wind 20 to 25 mph.
Monday
Sunny and cold, with a high near 28. Blustery, with a northeast wind 15 to 20 mph decreasing to 10 to 15 mph in the afternoon. Winds could gust as high as 30 mph.
Monday Night
Mostly clear, with a low around 17. North northeast wind around 15 mph, with gusts as high as 20 mph.
Tuesday
Sunny and cold, with a high near 32. Northwest wind 5 to 15 mph becoming north northeast in the morning.
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ABOUT THIS FORECAST

 
Point Forecast:
8 Miles WSW Conway Summit CA
 38.06°N 119.32°W (Elev. 11089 ft)
12:57 am PST Dec 24, 2025
1am PST Dec 24, 2025-6pm PST Dec 30, 2025
 
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