Fairfax Weather in December

December in Fairfax sees daytime temperatures around 13°C (55°F) and lows of 5°C (41°F) at night. As the wettest month of the year, keep in mind that rainfall is at its highest.

Rainfall in Fairfax in December

Prepare for intense rain this month, as it marks the peak rainfall period. Having a poncho will keep you dry through the downpours. Historically, approximately 13 days this month are expected to have rain, averaging 190 mm (7.5 in). Rainfall intensity is on the higher side this month. Expect more substantial showers rather than light, passing rain.

Temperature in Fairfax in December

In December, Fairfax sees moderate temperatures, with highs of 13°C (55°F). Nights drop to around 5°C (41°F). The winter season takes place during December. Even when the weather is stable, mornings and evenings can still feel distinctly cool. Nights drop to 5°C (41°F). Cold nights like these are actually great for sleeping well, as long as you have a warm enough duvet. This month often claims the chilliest averages of the year.

Sunshine in Fairfax in December

The area enjoys a moderate level of sunlight, with around 160 hours. It's a good balance between sunny and cloudy days.

December in Fairfax has its charm. However, if you're seeking pleasant, dry and sunny weather, our weather planner can help you explore other destinations in the world.