Contents
- Weather in December
- Frequently asked questions
- Average temperature in December
- Average pressure in December
- Average wind speed in December
- Average humidity in December
- Average rainfall in December
- Average rainfall days in December
- Average snowfall in December
- Average snowfall days in December
- Average daylight in December
- Average sunshine in December
- Average sunshine days in December
- Average UV index in December
- Average cloud cover in December
- Average visibility in December
Weather in December
Temperature
Fairfax's transition into December involves a shift in temperature, receding from a frosty 47.5°F (8.6°C) in November to a wintry 36.5°F (2.5°C). Fairfax, in December, experiences an average temperature of 27°F (-2.8°C) at night.Humidity
In December, the average relative humidity in Fairfax is 83%.Rainfall
In Fairfax, Indiana, during December, the rain falls for 9.5 days and regularly aggregates up to 1.46" (37mm) of precipitation. In Fairfax, during the entire year, the rain falls for 151.9 days and collects up to 23.39" (594mm) of precipitation.Snowfall
Months with snowfall are January through May, October through December. In Fairfax, Indiana, during December, snow falls for 10.7 days and regularly aggregates up to 1.85" (47mm) of snow. In Fairfax, during the entire year, snow falls for 50 days and aggregates up to 12.68" (322mm) of snow.Daylight
With an average of 9h and 18min of daylight, December has the shortest days of the year in Fairfax.On the first day of December in Fairfax, Indiana, sunrise is at 7:46 am and sunset at 5:12 pm. On the last day of the month, sunrise is at 8:05 am and sunset at 5:22 pm EST.
Sunshine
In December, the average sunshine in Fairfax is 3.7h.UV index
December is the month with the lowest UV index in Fairfax, with an average maximum UV index of 1. A UV Index of 2, and less, symbolizes a minimal health hazard from unprotected exposure to Sun's UV rays for ordinary individuals.Note: The UV index of 1 during December leads to these advisories:
Children, babies, and those with sensitive skin should always be shielded from long periods of sun exposure. Midday is when the Sun's radiation is strongest; avoid prolonged exposure during this time. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes. Caution! The reflection of snow can nearly double the intensity of the Sun's UV radiation.
Frequently asked questions
How cold is it in Fairfax in December?
What is the average humidity in December in Fairfax?
How much does it rain in Fairfax in December?
How many days does it snow in December in Fairfax?
What is the month with the shortest days in Fairfax?
How many hours of daylight does Fairfax have in December?
When are sunrise and sunset in December in Fairfax?
How long on average sun shines in December in Fairfax?
When is the lowest UV index in Fairfax?
What is the UV index intensity in December in Fairfax?
Average temperature in December
Fairfax, IN
- Average high temperature in December: 36.5°F
The warmest month (with the highest average high temperature) is July (81.1°F).
The month with the lowest average high temperature is January (30.7°F).
- Average low temperature in December: 27°F
The month with the highest average low temperature is July (63.9°F).
The coldest month (with the lowest average low temperature) is January (19.2°F).
Average pressure in December
Fairfax, IN
- Average pressure in December: 30.1"Hg
The months with the highest atmospheric pressure are January and November (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in December
Fairfax, IN
- Average wind speed in December: 9.7mph
The windiest month (with the highest average wind speed) is January (10.5mph).
The calmest month (with the lowest average wind speed) is August (6.1mph).
Average humidity in December
Fairfax, IN
- Average humidity in December: 83%
The months with the highest relative humidity are January and February (84%).
The month with the lowest relative humidity is October (75%).
Average rainfall in December
Fairfax, IN
- Average rainfall in December: 1.46"
The wettest month (with the highest rainfall) is April (2.95").
The driest month (with the least rainfall) is February (1.38").
Average rainfall days in December
Fairfax, IN
- Average rainfall days in December: 9.5 days
The month with the highest number of rainy days is May (17.8 days).
The month with the least rainy days is February (6.8 days).
Average snowfall in December
Fairfax, IN
- Average snowfall in December: 1.85"
The month with the highest snowfall is February (3.58").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Fairfax, IN
- Average snowfall days in December: 10.7 days
The month with the highest number of snowfall days is January (13.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Fairfax, IN
- Average daylight in December: 9h and 2min
The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 18min).
- Average sunshine in December: 3h and 4min
The month with the most sunshine is July (Average sunshine: 10h and 6min).
The month with the least sunshine is January (Average sunshine: 3h and 18min).
Average sunshine days in December
Fairfax, IN
- Average sunshine days in December: 13.4 days
The month with the most sunshine days is November (16.1 days).
The month with the least sunshine days is February (10.4 days).
Average UV index in December
Fairfax, IN
- Average UV index in December: 1
The month with the highest UV index is June (UV index 6).
The month with the lowest UV index is December (UV index 1).
Average cloud cover in December
Fairfax, IN
- Average cloud cover in December: 62
The month with the most cloud cover is January (Cloud cover 66).
The months with the least cloud cover are July and August (Cloud cover 33).
Average visibility in December
Fairfax, IN
- Average visibility in December: 6mi
The months with the highest visibility are February, March, April, May, June, July, September, October, November and December (6mi).
The months with the lowest visibility are January and August (5mi).
Fairfax, Indiana, USA
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