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
Festus in December demonstrates a small temperature transition, adjusting from an average high of a fresh 54°F (12.2°C) in November to a frosty 43.5°F (6.4°C). In the month of December, Festus experiences an average low-temperature of 30.7°F (-0.7°C).Humidity
The average relative humidity in December is 76%.Rainfall
In Festus, during December, the rain falls for 8.6 days and regularly aggregates up to 2.56" (65mm) of precipitation. In Festus, during the entire year, the rain falls for 155 days and collects up to 34.92" (887mm) of precipitation.Snowfall
January through March, November and December are months with snowfall. In December, it is snowing for 3.9 days. Throughout December, 2.05" (52mm) of snow is accumulated. In Festus, during the entire year, snow falls for 19.9 days and aggregates up to 8.43" (214mm) of snow.Daylight
With an average of 9h and 36min of daylight, December has the shortest days of the year in Festus.On the first day of December, sunrise is at 6:59 am and sunset at 4:41 pm. On the last day of the month, sunrise is at 7:18 am and sunset at 4:51 pm CST.
Sunshine
The average sunshine in December is 5h.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 estimate of 2, and below, represents a low threat to health from exposure to the Sun's UV rays for ordinary individuals.Note: In December, a regular UV index of 2 translates into these guidelines:
Protection from prolonged sun exposure is necessary for babies, children, and individuals with sensitive skin. When the Sun is at its strongest around midday, find shade and limit exposure. In the presence of strong sunlight, it's crucial to wear sunglasses that ward off UVA and UVB rays. On your guard! Snow's reflection can almost double the intensity of the Sun's UV radiation.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Is it cold during December?
What is the average humidity in December?
How many days does it rain in December?
How many days does it snow in December?
What is the month with the shortest days?
How many hours of daylight does Festus have in December?
When are sunrise and sunset in December?
How long on average sun shines in December?
When is the lowest UV index in Festus?
What is the UV index intensity in December?
Average temperature in December
Festus, MO
- Average high temperature in December: 43.5°F
The warmest month (with the highest average high temperature) is July (88°F).
The month with the lowest average high temperature is January (39°F).
- Average low temperature in December: 30.7°F
The month with the highest average low temperature is July (68.2°F).
The coldest month (with the lowest average low temperature) is January (25.2°F).
Average pressure in December
Festus, MO
- Average pressure in December: 30.13"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed in December
Festus, MO
- Average wind speed in December: 8.3mph
The windiest month (with the highest average wind speed) is January (9mph).
The calmest month (with the lowest average wind speed) is August (5.2mph).
Average humidity in December
Festus, MO
- Average humidity in December: 76%
The month with the highest relative humidity is May (79%).
The month with the lowest relative humidity is October (72%).
Average rainfall in December
Festus, MO
- Average rainfall in December: 2.56"
The wettest month (with the highest rainfall) is May (4.25").
The driest month (with the least rainfall) is February (1.97").
Average rainfall days in December
Festus, MO
- Average rainfall days in December: 8.6 days
The month with the highest number of rainy days is July (17.8 days).
The month with the least rainy days is January (8.2 days).
Average snowfall in December
Festus, MO
- Average snowfall in December: 2.05"
The month with the highest snowfall is January (2.36").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in December
Festus, MO
- Average snowfall days in December: 3.9 days
The month with the highest number of snowfall days is January (6.8 days).
The months with the least snowfall days are April, May, June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Festus, 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 0min
The months with the most sunshine are June and July (Average sunshine: 10h and 30min).
The month with the least sunshine is January (Average sunshine: 4h and 48min).
Average sunshine days in December
Festus, MO
- Average sunshine days in December: 19.2 days
The month with the most sunshine days is December (19.2 days).
The month with the least sunshine days is July (10.7 days).
Average UV index in December
Festus, MO
- Average UV index in December: 2
The months with the highest UV index are May, 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
Festus, MO
- Average cloud cover in December: 47
The month with the most cloud cover is January (Cloud cover 49).
The months with the least cloud cover are June, July and August (Cloud cover 28).
Average visibility in December
Festus, 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).
Festus, Missouri, USA
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