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The Fire Weather Zones in Del Norte, Humboldt, Trinity, Mendocino, and Lake Counties will be Changing in April 2026
The Public Forecast Zones in Trinity and Lake Counties will be Changing in April 2026

Hazardous Weather Conditions

Frost Advisory until April 18, 08:00 AM PDT

Current conditions at

LYONS VALLEY (COWC1)

Lat: 39.12583°NLon: 123.07333°WElev: 3355.0ft.

53°F

12°C

Humidity	34%
Wind Speed	E 4 MPH
Barometer	NA
Dewpoint	25°F (-4°C)
Visibility	NA
Last update	18 Apr 05:01 AM PDT

More Information:

Local Forecast Office More Local Wx 3 Day History Hourly Weather Forecast

Extended Forecast for

4 Miles ENE Calpella CA

Frost Advisory April 18, 05:23am until April 18, 08:00am

Click here for hazard details and duration

...

Frost Advisory April 18, 05:23am until April 18, 08:00am
NOW until 8:00am Sat
Frost Advisory
Today
High: 76 °F
Increasing
Clouds
Tonight
Low: 48 °F
Mostly Cloudy
Sunday
High: 72 °F
Mostly Cloudy
Sunday Night
Low: 47 °F
Chance Rain
Monday
High: 60 °F
Rain
Monday Night
Low: 46 °F
Showers
Tuesday
High: 58 °F
Showers
Tuesday Night
Low: 42 °F
Rain Likely

Detailed Forecast

Today

Increasing clouds, with a high near 76. Calm wind becoming south southwest around 6 mph in the afternoon.

Tonight

Mostly cloudy, with a low around 48. West wind 5 to 9 mph becoming calm in the evening.

Sunday

Mostly cloudy, with a high near 72. Calm wind becoming south southwest 5 to 8 mph in the afternoon.

Sunday Night

A 50 percent chance of rain, mainly after 11pm. Mostly cloudy, with a low around 47. Southeast wind 5 to 8 mph. New precipitation amounts between a tenth and quarter of an inch possible.

Monday

Rain. High near 60. South wind 5 to 8 mph. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.

Monday Night

Showers. Low around 46. South southeast wind around 6 mph becoming calm in the evening. Chance of precipitation is 90%. New precipitation amounts between a half and three quarters of an inch possible.

Tuesday

Showers, with thunderstorms also possible after 11am. High near 58. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.

Tuesday Night

Rain likely, mainly before 11pm. Mostly cloudy, with a low around 42.

Wednesday

A chance of rain. Partly sunny, with a high near 61.

Wednesday Night

Partly cloudy, with a low around 40.

Thursday

Mostly sunny, with a high near 67.

Thursday Night

Mostly clear, with a low around 42.

Friday

Sunny, with a high near 71.