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
December indicates a shift in the average high-temperature, from November's fresh 54.5°F (12.5°C) to a chilly 43.7°F (6.5°C). Foster reports an average low-temperature of 29.5°F (-1.4°C) during the nights of December.Humidity
The average relative humidity in December in Foster is 73%.Rainfall
In December, the rain falls for 5.5 days. Throughout December, 1.1" (28mm) of precipitation is accumulated. In Foster, during the entire year, the rain falls for 130.6 days and collects up to 25.43" (646mm) of precipitation.Snowfall
Months with snowfall in Foster, Missouri, are January through March, May, October through December. In Foster, during December, snow falls for 2 days and regularly aggregates up to 0.43" (11mm) of snow. In Foster, during the entire year, snow falls for 12.2 days and aggregates up to 4.29" (109mm) of snow.Daylight
The month with the shortest days is December, with an average of 9h and 36min of daylight.On the first day of the month, sunrise is at 7:16 am and sunset at 4:58 pm. On the last day of December, sunrise is at 7:34 am and sunset at 5:08 pm CST.
Sunshine
In Foster, the average sunshine in December is 5.6h.UV index
The months with the lowest UV index are January, February, November and December, with an average maximum UV index of 2. A UV Index value of 2, and less, symbolizes a minimal health hazard from exposure to the Sun's UV radiation for the ordinary person.Note: A maximum daily UV index of 2 during December morphs into the following directions:
Protection from prolonged sun exposure is necessary for babies, children, and individuals with sensitive skin. Limiting exposure to the direct Sun during midday hours can help prevent harmful UV radiation effects. Employ a wide-brim hat for potent defense against up to 50% of UV rays. On your guard! Snow's reflection can almost double the intensity of the Sun's UV radiation.
Frequently asked questions
How cold is it in Foster in December?
What is the average humidity in December in Foster?
How much does it rain in Foster in December?
How much does it snow in Foster in December?
What is the month with the shortest days in Foster?
How many hours of daylight does Foster have in December?
When are sunrise and sunset in December in Foster?
How long on average sun shines in December in Foster?
When is the lowest UV index in Foster?
What is the UV index reading in December in Foster?
Average temperature in December
Foster, MO
- Average high temperature in December: 43.7°F
The warmest month (with the highest average high temperature) is July (87.4°F).
The month with the lowest average high temperature is January (39.9°F).
- Average low temperature in December: 29.5°F
The month with the highest average low temperature is July (68.9°F).
The coldest month (with the lowest average low temperature) is January (25.2°F).
Average pressure in December
Foster, MO
- Average pressure in December: 30.14"Hg
The month with the highest atmospheric pressure is January (30.17"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed in December
Foster, MO
- Average wind speed in December: 9.4mph
The windiest month (with the highest average wind speed) is March (10.4mph).
The calmest month (with the lowest average wind speed) is August (6.6mph).
Average humidity in December
Foster, MO
- Average humidity in December: 73%
The month with the highest relative humidity is May (81%).
The month with the lowest relative humidity is October (71%).
Average rainfall in December
Foster, MO
- Average rainfall in December: 1.1"
The wettest month (with the highest rainfall) is May (4.49").
The driest month (with the least rainfall) is January (0.79").
Average rainfall days in December
Foster, MO
- Average rainfall days in December: 5.5 days
The month with the highest number of rainy days is May (16.8 days).
The month with the least rainy days is January (5 days).
Average snowfall in December
Foster, MO
- Average snowfall in December: 0.43"
The month with the highest snowfall is February (1.69").
The months with the least snowfall are April, June, July, August and September (0").
Average snowfall days in December
Foster, MO
- Average snowfall days in December: 2 days
The month with the highest number of snowfall days is February (4 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Foster, MO
- Average daylight in December: 9h and 4min
The month with the longest days is June (Average daylight: 14h and 48min).
The month with the shortest days is December (Average daylight: 9h and 36min).
- Average sunshine in December: 5h and 4min
The month with the most sunshine is July (Average sunshine: 10h and 36min).
The month with the least sunshine is January (Average sunshine: 5h and 18min).
Average sunshine days in December
Foster, MO
- Average sunshine days in December: 22.5 days
The month with the most sunshine days is January (22.7 days).
The month with the least sunshine days is May (12.2 days).
Average UV index in December
Foster, MO
- Average UV index in December: 2
The month with the highest UV index is June (UV index 7).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in December
Foster, MO
- Average cloud cover in December: 40
The month with the most cloud cover is March (Cloud cover 46).
The month with the least cloud cover is July (Cloud cover 25).
Average visibility in December
Foster, MO
- 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).
Foster, Missouri, USA
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