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 cool 50.2°F (10.1°C) to a wintry 38.8°F (3.8°C). In the month of December, the average temperature dips to a subzero cold 28.4°F (-2°C) during the night.Humidity
The average relative humidity in December is 78%.Rainfall
The month with the least rainfall in Jerome is December, when the rain falls for 5.5 days and typically collects 0.43" (11mm) of precipitation.Snowfall
January through April, November and December are months with snowfall in Jerome. In December, it is snowing for 3.9 days. Throughout December, 0.47" (12mm) of snow is accumulated. In Jerome, during the entire year, snow falls for 18.6 days and aggregates up to 2.68" (68mm) of snow.Daylight
With an average of 9h and 24min of daylight, December has the shortest days of the year.On the first day of December in Jerome, sunrise is at 7:01 am and sunset at 4:34 pm. On the last day of the month, sunrise is at 7:19 am and sunset at 4:44 pm CST.
Sunshine
In Jerome, the average sunshine in December is 4.8h.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 reading of 2, and below, represents a minimal health hazard from unsafe exposure to UV radiation for ordinary individuals.Note: A maximum high UV index of 2 in December translates into the following recommendations:
Most individuals can handle sun exposure for up to an hour without burning, but children must always be shielded from sun exposure. Direct exposure to the Sun's intense radiation around midday should be avoided for health reasons. Sunglasses providing both UVA and UVB protection are non-negotiable on sunlit days. Take warning! The intensity of the Sun's UV radiation can be nearly amplified twice due to snow reflection.
Frequently asked questions
Is December cold in Jerome?
What is the average humidity in December in Jerome?
What is the driest month in Jerome?
How much does it rain in Jerome in December?
How many days does it snow in December in Jerome?
What is the month with the shortest days in Jerome?
How many hours of daylight does Jerome have in December?
When is the sunrise / sunset in December in Jerome?
How many hours of sunshine does Jerome have in December?
What is the month with the lowest UV index in Jerome?
What is the UV index reading in December in Jerome?
Average temperature in December
Jerome, IL
- Average high temperature in December: 38.8°F
The warmest month (with the highest average high temperature) is July (82.8°F).
The month with the lowest average high temperature is January (33.6°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 (21.4°F).
Average pressure in December
Jerome, 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 (29.91"Hg).
Average wind speed in December
Jerome, IL
- Average wind speed in December: 9.8mph
The windiest month (with the highest average wind speed) is January (10.4mph).
The calmest month (with the lowest average wind speed) is July (6.1mph).
Average humidity in December
Jerome, 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
Jerome, IL
- Average rainfall in December: 0.43"
The wettest month (with the highest rainfall) is June (1.22").
The driest month (with the least rainfall) is December (0.43").
Average rainfall days in December
Jerome, IL
- Average rainfall days in December: 5.5 days
The month with the highest number of rainy days is May (12.5 days).
The month with the least rainy days is January (4.4 days).
Average snowfall in December
Jerome, IL
- Average snowfall in December: 0.47"
The month with the highest snowfall is February (0.91").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in December
Jerome, IL
- Average snowfall days in December: 3.9 days
The month with the highest number of snowfall days is January (5.7 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
Jerome, 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 5min
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
Jerome, IL
- Average sunshine days in December: 22.6 days
The month with the most sunshine days is December (22.6 days).
The month with the least sunshine days is June (14 days).
Average UV index in December
Jerome, 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
Jerome, IL
- Average cloud cover in December: 50
The month with the most cloud cover is January (Cloud cover 54).
The months with the least cloud cover are June and September (Cloud cover 29).
Average visibility in December
Jerome, IL
- 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).
Jerome, Illinois, USA
Weather forecast for your location
2. Allow the app to use your location
