December weather forecastFairfield, OH
December
Weather in December
December ushers in the full-fledged winter, putting an end to the transitioning weather of November. Temperatures plunge further with the average high dropping to 40.8°F (4.9°C). Snowfall makes its full return, averaging about 1.22" (31mm) for the month. The days shorten noticeably down to an average of 9.4 daylight hours, and sunshine hours reach their lowest of the year. Fairfield in December, is a winter wonderland, rounding out the year under the white blanket of snow.Temperature
The onset of December in Fairfield brings a small change in high-temperatures, falling from a fresh 50.9°F (10.5°C) in November to a cold 40.8°F (4.9°C). In December, in Fairfield, the average low-temperature is a subzero cold 29.5°F (-1.4°C).Humidity
The months with the highest humidity are January, February and December, with an average relative humidity of 81%.Rainfall
In Fairfield, in December, during 10.5 rainfall days, 1.93" (49mm) of precipitation is typically accumulated. Throughout the year, in Fairfield, there are 147.8 rainfall days, and 24.33" (618mm) of precipitation is accumulated.Snowfall
Months with snowfall in Fairfield are January through April, November and December. In Fairfield, in December, snow falls for 4.9 days, with typically accumulated 1.22" (31mm) of snow. In Fairfield, during the entire year, snow falls for 25 days and aggregates up to 6.57" (167mm) of snow.Daylight
December has the shortest days of the year, with an average of 9h and 30min of daylight.On the first day of the month, sunrise is at 7:39 am and sunset at 5:15 pm. On the last day of December, in Fairfield, sunrise is at 7:57 am and sunset at 5:25 pm EST.
Sunshine
The average sunshine in December in Fairfield is 4.2h.UV index
December is the month with the lowest UV index, with an average maximum UV index of 1. A UV Index of 2, and less, symbolizes a low threat to health from exposure to the Sun's UV rays for ordinary individuals.Note: In December, the maximum UV index of 1 translates into these guidelines:
Most individuals can handle sun exposure for up to an hour without burning, but children must always be shielded from sun exposure. It's recommended to limit sun exposure when its radiation is at its peak during midday. Loose clothes with a tight weave are optimal for safeguarding yourself against the Sun's rays. Note well! The intensity of the Sun's UV rays can be nearly doubled by snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Fairfield, OH
- Average high temperature in December: 40.8°F
The warmest month (with the highest average high temperature) is July (83.3°F).
The month with the lowest average high temperature is January (35.2°F).
- Average low temperature in December: 29.5°F
The month with the highest average low temperature is July (65.7°F).
The coldest month (with the lowest average low temperature) is January (22.8°F).
Average pressure in December
Fairfield, OH
- Average pressure in December: 30.13"Hg
The months with the highest atmospheric pressure are January and November (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).
Average wind speed in December
Fairfield, OH
- Average wind speed in December: 8.3mph
The windiest month (with the highest average wind speed) is January (9.1mph).
The calmest months (with the lowest average wind speed) are July and August (5.3mph).
Average humidity in December
Fairfield, OH
- Average humidity in December: 81%
The months with the highest relative humidity are January, February and December (81%).
The month with the lowest relative humidity is October (74%).
Average rainfall in December
Fairfield, OH
- Average rainfall in December: 1.93"
The wettest month (with the highest rainfall) is May (2.99").
The driest month (with the least rainfall) is September (1.42").
Average rainfall days in December
Fairfield, OH
- Average rainfall days in December: 10.5 days
The month with the highest number of rainy days is May (18.1 days).
The month with the least rainy days is January (7.9 days).
Average snowfall in December
Fairfield, OH
- Average snowfall in December: 1.22"
The months with the highest snowfall are February and March (1.81").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in December
Fairfield, OH
- Average snowfall days in December: 4.9 days
The month with the highest number of snowfall days is January (7.1 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight in December /
Average sunshine in December
Fairfield, OH
- Average daylight in December: 9h and 30min
The month with the longest days is June (Average daylight: 14h and 54min).
The month with the shortest days is December (Average daylight: 9h and 30min).
- Average sunshine in December: 4h and 12min
The months with the most sunshine are June and July (Average sunshine: 10h and 18min).
The month with the least sunshine is January (Average sunshine: 4h and 0min).
Average sunshine days in December
Fairfield, OH
- Average sunshine days in December: 16 days
The month with the most sunshine days is October (19.5 days).
The month with the least sunshine days is May (10.8 days).
Average UV index in December
Fairfield, OH
- Average UV index in December: 1
The months with the highest UV index are May, June, July and August (UV index 6).
The month with the lowest UV index is December (UV index 1).
Average cloud cover in December
Fairfield, OH
- Average cloud cover in December: 57
The month with the most cloud cover is January (Cloud cover 59).
The month with the least cloud cover is August (Cloud cover 27).
Average visibility in December
Fairfield, OH
- Average visibility in December: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
