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.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit the United States of America, check out our Fairfax's climate page.
Fairfax Temperature in December
Min Temperature
5°C (41°F)
Max Temperature
13°C (55°F)
Chance of Rain
43%
Precipitation
190 mm (7.5 in)
Rainy days
13 days
Humidity
78% *
Sunshine
160 hours *
Percentage Sunshine
54% *
Best Places in the United States of America in December
Find out more about the weather in the United States of America and which places have the best travel conditions in this month. See all of the United States of America in December →
perfect weather
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What to Wear in Fairfax in December
The weather can swing between comfortable and chilly in December, so flexibility is key. Pack a variety of tops, at least one warm layer, and both shorts and long pants. This gives you options no matter what the day brings. It's going to pour! Pack a good poncho and prepare for very wet conditions. Sunglasses could come in handy during the sunnier parts of your trip.What To Do in Fairfax in December
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit the United States of America, check out our Fairfax's climate page.
Temperature Rainfall Sunshine Humidity
See the full Fairfax climate overview or explore weather in the United States of America.
