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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

Current conditions at

LYONS VALLEY (COWC1)

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

54°F

12°C

Humidity	78%
Wind Speed	W 2 MPH
Barometer	NA
Dewpoint	47°F (8°C)
Visibility	NA
Last update	08 Apr 11:01 PM PDT

More Information:

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

Extended Forecast for

4 Miles ENE Calpella CA

Tonight
Low: 48 °F
Patchy Dense
Fog
Thursday
High: 70 °F
Showers
Likely and
Patchy Dense
Fog
Thursday Night
Low: 48 °F
Showers
Likely
Friday
High: 63 °F
Showers and
Patchy Fog
Friday Night
Low: 47 °F
Showers and
Patchy Fog
Saturday
High: 55 °F
Showers and
Patchy Fog
Saturday Night
Low: 39 °F
Rain
Sunday
High: 57 °F
Rain Likely
Sunday Night
Low: 36 °F
Chance Rain
then Partly
Cloudy

Detailed Forecast

Tonight

Patchy dense fog after 2am. Otherwise, partly cloudy, with a low around 48. Calm wind.

Thursday

Scattered showers, then showers likely and possibly a thunderstorm after 11am. Patchy dense fog before 11am. Otherwise, partly sunny, with a high near 70. Light west southwest wind becoming southwest 5 to 10 mph in the afternoon. Chance of precipitation is 70%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

Thursday Night

Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 48. Southwest wind 5 to 10 mph becoming light in the evening. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

Friday

Showers likely, then showers and possibly a thunderstorm after 11am. Patchy fog before 11am. High near 63. Light and variable wind becoming southwest 6 to 11 mph in the afternoon. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

Friday Night

Showers and possibly a thunderstorm. Patchy fog after 2am. Low around 47. Southwest wind 5 to 9 mph becoming calm in the evening. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

Saturday

Showers, with thunderstorms also possible after 11am. Patchy fog before 11am. High near 55. Calm wind becoming west southwest 5 to 7 mph in the afternoon. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.

Saturday Night

Rain. Low around 39. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.

Sunday

Rain likely. Mostly cloudy, with a high near 57.

Sunday Night

A chance of rain before 11pm. Partly cloudy, with a low around 36.

Monday

Sunny, with a high near 64.

Monday Night

Partly cloudy, with a low around 40.

Tuesday

Mostly sunny, with a high near 69.