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

ROCK CREEK (RCEC1)

Lat: 37.55983°NLon: 118.67841°WElev: 7103.0ft.

NA

36°F

2°C

Humidity 73%
Wind Speed ESE 3 MPH
Barometer NA
Dewpoint 28°F (-2°C)
Visibility NA
Last update 12 Apr 02:04 AM PDT
Extended Forecast for

15 Miles WSW Chalfant CA

Winter Storm Warning until April 12, 11:00pm
Click here for hazard details and duration
Winter Storm Warning
  •  
    Winter Storm Warning until April 12, 11:00pm

    NOW until 11:00pm Sun

    Winter Storm Warning

  • Overnight

    Low: 36 °F

    Rain/Snow
    Likely

  • Sunday

    Sunday: Snow showers likely before 2pm, then a chance of rain and snow showers. Some thunder is also possible.  Mostly cloudy through mid morning, then becoming sunny, with a high near 53. Southwest wind 10 to 15 mph, with gusts as high as 25 mph.  Chance of precipitation is 70%. Little or no snow accumulation expected.

    High: 53 °F

    Snow Showers
    Likely then
    Chance
    Rain/Snow

  • Sunday Night

    Sunday Night: A 20 percent chance of snow showers before 11pm.  Mostly clear, with a low around 33. West wind 5 to 10 mph, with gusts as high as 20 mph.

    Low: 33 °F

    Slight Chance
    Snow Showers
    then Mostly
    Clear

  • Monday

    Monday: A chance of snow showers before 2pm, then a chance of rain showers. Some thunder is also possible.  Mostly sunny, with a high near 54. West wind around 5 mph becoming northeast in the morning.  Chance of precipitation is 30%. Little or no snow accumulation expected.

    High: 54 °F

    Chance Snow
    Showers then
    Chance
    Rain/Snow

  • Monday Night

    Monday Night: Mostly clear, with a low around 37. West wind around 5 mph.

    Low: 37 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 61. West wind around 5 mph becoming calm.

    High: 61 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 42.

    Low: 42 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 65.

    High: 65 °F

    Sunny

Detailed Forecast

Overnight
Rain and snow showers likely. Some thunder is also possible. Snow level 5900 feet. Mostly cloudy, with a low around 36. South wind around 15 mph. Chance of precipitation is 70%. Little or no snow accumulation expected.
Sunday
Snow showers likely before 2pm, then a chance of rain and snow showers. Some thunder is also possible. Mostly cloudy through mid morning, then becoming sunny, with a high near 53. Southwest wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 70%. Little or no snow accumulation expected.
Sunday Night
A 20 percent chance of snow showers before 11pm. Mostly clear, with a low around 33. West wind 5 to 10 mph, with gusts as high as 20 mph.
Monday
A chance of snow showers before 2pm, then a chance of rain showers. Some thunder is also possible. Mostly sunny, with a high near 54. West wind around 5 mph becoming northeast in the morning. Chance of precipitation is 30%. Little or no snow accumulation expected.
Monday Night
Mostly clear, with a low around 37. West wind around 5 mph.
Tuesday
Sunny, with a high near 61. West wind around 5 mph becoming calm.
Tuesday Night
Mostly clear, with a low around 42.
Wednesday
Sunny, with a high near 65.
Wednesday Night
Partly cloudy, with a low around 43.
Thursday
Mostly sunny, with a high near 61.
Thursday Night
Mostly clear, with a low around 35.
Friday
Sunny, with a high near 62.
Friday Night
Mostly clear, with a low around 40.
Saturday
Sunny, with a high near 68.
Basemap Options
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ABOUT THIS FORECAST

 
Point Forecast:
15 Miles WSW Chalfant CA
 37.48°N 118.62°W (Elev. 5213 ft)
11:31 pm PDT Apr 11, 2026
3am PDT Apr 12, 2026-6pm PDT Apr 18, 2026
 
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Additional Resources

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