Fairfax Weather in January

The climate in Fairfax during January can be summarized as cool and reasonably dry.

January is in the winter in Fairfax and is typically the coldest month of the year. Daytime maximum temperatures average around a cold 5°C (41°F), whilst at night -5°C (23°F) is normal.

On average January is the driest month of the year in Fairfax with around 70mm 2.7 inches of rain making it a reasonably dry time to visit. This rainfall is typically spread over 10 days, although this may vary considerably.

On the flip side this corresponds to an average of 5.2 hours of sunshine per day.

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 Fairfax in January 2024.