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
Stepping into December, Rosamond observes a temperature decline, with the average high falling from November's cool 50.7°F (10.4°C) to an icy 39.6°F (4.2°C). An average low-temperature of 28.4°F (-2°C) is common in Rosamond during the nights of December.Humidity
The average relative humidity in December in Rosamond is 78%.Rainfall
The months with the least rainfall in Rosamond are February and December Rain falls for 7.5 days and accumulates 0.98" (25mm) of rain.Snowfall
Months with snowfall in Rosamond are January through April, November and December. In Rosamond, in December, snow falls for 4.3 days, with typically accumulated 1.22" (31mm) of snow. In Rosamond, during the entire year, snow falls for 21.4 days and aggregates up to 5.2" (132mm) of snow.Daylight
December has the shortest days of the year in Rosamond, with an average of 9h and 24min of daylight.On the first day of December in Rosamond, sunrise is at 6:58 am and sunset at 4:33 pm. On the last day of the month, sunrise is at 7:16 am and sunset at 4:43 pm CST.
Sunshine
In Rosamond, the average sunshine in December is 4.6h.UV index
January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index in Rosamond. A UV Index estimate of 2, and below, represents a low health risk from exposure to the Sun's UV rays for the ordinary person.Note: The UV index of 2 during December leads to these advisories:
Extended exposure to the sun should always be avoided by children, infants, and those with sensitive skin. During midday, the Sun's radiation is strongest, and it's advisable to reduce direct exposure. Enhance your sun protection with tightly woven, yet airy clothing. Pay attention! The reflection of snow can enhance the Sun's UV radiation almost double.
Frequently asked questions
How cold does it get in Rosamond in December?
What is the average humidity in December in Rosamond?
What is the driest month in Rosamond?
How much does it rain in Rosamond in December?
How much does it snow in Rosamond in December?
What is the month with the shortest days in Rosamond?
How many hours of daylight does Rosamond have in December?
What time are sunrise and sunset in December in Rosamond?
How many hours of sunshine does Rosamond have in December?
What is the month with the lowest UV index in Rosamond?
How high is the UV index in December in Rosamond?
Average temperature in December
Rosamond, IL
- Average high temperature in December: 39.6°F
The warmest month (with the highest average high temperature) is July (83.1°F).
The month with the lowest average high temperature is January (34.3°F).
- Average low temperature in December: 28.4°F
The month with the highest average low temperature is July (66.6°F).
The coldest month (with the lowest average low temperature) is January (22.1°F).
Average pressure in December
Rosamond, IL
- Average pressure in December: 30.13"Hg
The month with the highest atmospheric pressure is January (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed in December
Rosamond, IL
- Average wind speed in December: 9.8mph
The windiest month (with the highest average wind speed) is January (10.6mph).
The calmest month (with the lowest average wind speed) is July (6.1mph).
Average humidity in December
Rosamond, IL
- Average humidity in December: 78%
The month with the highest relative humidity is July (83%).
The month with the lowest relative humidity is October (70%).
Average rainfall in December
Rosamond, IL
- Average rainfall in December: 0.98"
The wettest month (with the highest rainfall) is June (2.2").
The driest months (with the least rainfall) are February and December (0.98").
Average rainfall days in December
Rosamond, IL
- Average rainfall days in December: 7.5 days
The month with the highest number of rainy days is May (15.2 days).
The month with the least rainy days is January (5.9 days).
Average snowfall in December
Rosamond, IL
- Average snowfall in December: 1.22"
The month with the highest snowfall is February (1.93").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in December
Rosamond, IL
- Average snowfall days in December: 4.3 days
The months with the highest number of snowfall days are January and February (6.3 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
Rosamond, IL
- Average daylight in December: 9h and 2min
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 24min).
- Average sunshine in December: 4h and 4min
The month with the most sunshine is June (Average sunshine: 10h and 24min).
The month with the least sunshine is January (Average sunshine: 4h and 12min).
Average sunshine days in December
Rosamond, IL
- Average sunshine days in December: 19.7 days
The month with the most sunshine days is January (20.2 days).
The month with the least sunshine days is May (13.1 days).
Average UV index in December
Rosamond, IL
- 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
Rosamond, IL
- Average cloud cover in December: 52
The months with the most cloud cover are January and February (Cloud cover 54).
The months with the least cloud cover are June and September (Cloud cover 29).
Average visibility in December
Rosamond, IL
- Average visibility in December: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, September, October, November and December (6mi).
The month with the lowest visibility is August (5mi).
Rosamond, Illinois, USA
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