Mount Shasta Weather in October

What's the weather like in Mount Shasta (California) in October 2025?

The climate in Mount Shasta during October can be summarized as cool and reasonably dry.

October is in the fall / autumn in Mount Shasta and is typically the 6th warmest month of the year. Daytime maximum temperatures average around a cool 18°C (65°F), whilst at night 1°C (34°F) is normal.

Mount Shasta weather averages (imperial / metric)
Daytime temperature 18.1°C 64.5°F
Nightly temperature 0.9°C 33.7°F
Average temperature 9.5°C 49.1°F
Daily sunshine 8.5 hrs
Avg rainfall 69 mm 2.7 ins
Rainy days 7 days
Sea temperature 13.1°C 55.6°F
Humidity 66%
Windspeed 9.7kph 6 mph

On average October is the 6th driest month of the year in Mount Shasta with around 69mm 2.7 inches of rain making it a reasonably dry time to visit. This rainfall is typically spread over 7 days, although this may vary considerably.

On the flip side this corresponds to an average of 8.5 hours of sunshine per day.

October temperatures in Mount Shasta

Mount Shasta average temperature in October

October rainfall

Mount Shasta average rain in October

October hourly sunshine

Mount Shasta average rain in October

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 Mount Shasta in October 2025.