Dunsmuir Weather in January

What's the weather like in Dunsmuir (California) in January 2026?

The climate in Dunsmuir during January can be summarized as cool and wet.

January is in the winter in Dunsmuir and is typically the coldest month of the year. Daytime maximum temperatures average around a cold 6°C (43°F), whilst at night -5°C (23°F) is normal.

Dunsmuir weather averages (imperial / metric)
Daytime temperature 6.1°C 43°F
Nightly temperature -5.1°C 22.8°F
Average temperature 0.5°C 32.9°F
Daily sunshine 5 hrs
Avg rainfall 184 mm 7.3 ins
Rainy days 12 days
Sea temperature 10.8°C 51.4°F
Humidity 80%
Windspeed 9.4kph 6 mph

On average January is the wettest month of the year in Dunsmuir with around 184mm 7.3 inches of rain making it a wet time to visit. This rainfall is typically spread over 12 days, although this may vary considerably.

On the flip side this corresponds to an average of 5 hours of sunshine per day.

January temperatures in Dunsmuir

Dunsmuir average temperature in January

January rainfall

Dunsmuir average rain in January

January hourly sunshine

Dunsmuir average rain in January

The data used in these monthly averages covers a period of over 100 years right up until last year. As such they are a valid prediction of what to expect for the weather in Dunsmuir in January 2025.