Heavy Lake Effect Snow; Subfreezing Temperatures in the Eastern U.S.
A multi-day heavy lake effect snow event is expected downwind of Lakes Erie and Ontario through New Year's Day. The Arctic front will continue to bring increasing winds to the Northeast that will remain gusty. Subfreezing overnight low temperatures will be found as far south as the Gulf Coast. Read More >
Hazardous Weather Conditions
Current conditions at
LAS TRAMPAS (LTRC1)
Lat: 37.83389°NLon: 122.06694°WElev: 1760.0ft.NA
51°F
11°C
| Humidity | 37% |
| Wind Speed | E 17 MPH |
| Barometer | NA |
| Dewpoint | 25°F (-4°C) |
| Visibility | NA |
| Last update | 29 Dec 07:28 PM PST |
Extended Forecast for
Walnut Creek CA
Cold Weather Advisory December 30, 01:00am until December 30, 09:00am
Tonight
Low: 36 °F
Mostly Clear
then Patchy
FrostTuesday
High: 52 °F
Increasing
CloudsTuesday Night
Low: 45 °F
Cloudy then
Chance RainWednesday
High: 52 °F
Rain
Wednesday Night
Low: 47 °F
Rain
New Year's Day
High: 56 °F
Rain
Thursday Night
Low: 52 °F
Rain
Friday
High: 58 °F
Rain
Friday Night
Low: 48 °F
Rain
Detailed Forecast
Tonight
Patchy frost between 4am and 5am. Otherwise, mostly clear, with a low around 36. North wind 3 to 6 mph.
Tuesday
Increasing clouds, with a high near 52. North northeast wind 7 to 10 mph.
Tuesday Night
A 30 percent chance of rain after 4am. Cloudy, with a low around 45. North northeast wind 6 to 8 mph.
Wednesday
Rain, mainly after 10am. High near 52. North northeast wind 6 to 8 mph. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.
Wednesday Night
Rain. Low around 47. Northeast wind around 6 mph. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.
New Year's Day
Rain. High near 56. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.
Thursday Night
Rain. Low around 52. Chance of precipitation is 80%.
Friday
Rain. Cloudy, with a high near 58.
Friday Night
Rain. Cloudy, with a low around 48.
Saturday
Rain likely. Mostly cloudy, with a high near 56.
Saturday Night
Rain likely. Mostly cloudy, with a low around 46.
Sunday
Rain likely. Mostly cloudy, with a high near 56.
Sunday Night
Rain likely. Mostly cloudy, with a low around 46.
Monday
Rain likely. Mostly cloudy, with a high near 56.
Additional Forecasts and Information
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Forecast AreaABOUT THIS FORECAST
Point Forecast:
Walnut Creek CA
37.9°N 122.07°W (Elev. 203 ft)
37.9°N 122.07°W (Elev. 203 ft)
12:27 pm PST Dec 29, 2025
8pm PST Dec 29, 2025-6pm PST Jan 5, 2026
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