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
Foster's December weather comes with a decrease in average high-temperatures, moving from a chilly 48.9°F (9.4°C) in November to an icy 37.6°F (3.1°C). Nighttime temperatures in Foster consistently average a subzero cold 27.5°F (-2.5°C) during December.Humidity
In December, the average relative humidity is 81%.Rainfall
In December, in Foster, the rain falls for 8.8 days. Throughout December, 1.46" (37mm) of precipitation is accumulated. In Foster, during the entire year, the rain falls for 151.8 days and collects up to 25.63" (651mm) of precipitation.Snowfall
January through April, November and December are months with snowfall in Foster. In December, it is snowing for 7.9 days. Throughout December, 2.09" (53mm) of snow is accumulated. Throughout the year, in Foster, there are 35.2 snowfall days, and 8.82" (224mm) of snow is accumulated.Daylight
December has the shortest days of the year, with an average of 9h and 24min of daylight.On the first day of December in Foster, Indiana, sunrise is at 7:53 am and sunset at 5:24 pm. On the last day of the month, sunrise is at 8:12 am and sunset at 5:34 pm EST.
Sunshine
The average sunshine in December in Foster is 4.5h.UV index
January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index. A UV Index of 2, and less, symbolizes a minimal health vulnerability from exposure to the Sun's UV radiation for the average person.Note: A maximum high daily UV index of 2 during December translates into the following directions:
Though extended exposure to the sun typically does not concern most people, it is crucial to always shield children, infants, and those with sensitive skin. UV radiation is strongest from the Sun during midday; protect yourself by staying in shaded areas. For a sun-safe wardrobe, go for clothes that are tightly woven and generously sized. Take precaution! The reflection from snow can almost double the UV radiation of the Sun.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold is it in Foster in December?
What is the average humidity in December in Foster?
How many days does it rain in December in Foster?
How much does it snow in Foster in December?
What is the month with the shortest days in Foster?
What is the average length of the day in December in Foster?
When are sunrise and sunset in December in Foster?
How many hours of sunshine does Foster have in December?
What is the month with the lowest UV index in Foster?
What is the UV index intensity in December in Foster?
Average temperature in December
Foster, IN
- Average high temperature in December: 37.6°F
The warmest month (with the highest average high temperature) is July (81.3°F).
The month with the lowest average high temperature is January (31.6°F).
- Average low temperature in December: 27.5°F
The month with the highest average low temperature is July (64.9°F).
The coldest month (with the lowest average low temperature) is January (20.5°F).
Average pressure in December
Foster, IN
- Average pressure in December: 30.12"Hg
The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in December
Foster, IN
- Average wind speed in December: 9.7mph
The windiest month (with the highest average wind speed) is January (10.4mph).
The calmest months (with the lowest average wind speed) are July and August (6.2mph).
Average humidity in December
Foster, IN
- Average humidity in December: 81%
The month with the highest relative humidity is July (84%).
The month with the lowest relative humidity is October (72%).
Average rainfall in December
Foster, IN
- Average rainfall in December: 1.46"
The wettest month (with the highest rainfall) is April (3.23").
The driest months (with the least rainfall) are February and September (1.38").
Average rainfall days in December
Foster, IN
- Average rainfall days in December: 8.8 days
The month with the highest number of rainy days is May (18 days).
The month with the least rainy days is February (6.6 days).
Average snowfall in December
Foster, IN
- Average snowfall in December: 2.09"
The month with the highest snowfall is February (2.64").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in December
Foster, IN
- Average snowfall days in December: 7.9 days
The month with the highest number of snowfall days is January (10.6 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Foster, IN
- Average daylight in December: 9h and 2min
The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 24min).
- Average sunshine in December: 4h and 3min
The month with the most sunshine is June (Average sunshine: 10h and 6min).
The month with the least sunshine is January (Average sunshine: 4h and 0min).
Average sunshine days in December
Foster, IN
- Average sunshine days in December: 15.6 days
The month with the most sunshine days is November (18 days).
The month with the least sunshine days is July (9.5 days).
Average UV index in December
Foster, IN
- Average UV index in December: 2
The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in December
Foster, IN
- Average cloud cover in December: 54
The month with the most cloud cover is January (Cloud cover 58).
The months with the least cloud cover are June, August and September (Cloud cover 32).
Average visibility in December
Foster, IN
- Average visibility in December: 6mi
The months with the highest visibility are January, February, March, April, May, June, September, October, November and December (6mi).
The months with the lowest visibility are July and August (5mi).
Foster, Indiana, USA
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