December weather forecastAnnawan, IL
December
Weather in December
December, the first month of the winter in Annawan, is also an icy month, with an average temperature varying between 24.1°F (-4.4°C) and 34.7°F (1.5°C).Temperature
Onset of December comes with a temperature decline, the average high falling from a chilly 47.1°F (8.4°C) in November to a cold 34.7°F (1.5°C). Throughout December, an average low-temperature of 24.1°F (-4.4°C) is experienced in Annawan.Humidity
In December, the average relative humidity in Annawan is 82%.Rainfall
The months with the least rainfall in Annawan are January and December Rain falls for 7.9 days and accumulates 1.42" (36mm) of rain.Snowfall
Months with snowfall are January through April, October through December. In December, in Annawan, it is snowing for 7.3 days. Throughout December, 1.97" (50mm) of snow is accumulated. In Annawan, during the entire year, snow falls for 37 days and aggregates up to 12.91" (328mm) of snow.Daylight
December has the shortest days of the year in Annawan, with an average of 9h and 12min of daylight.On the first day of December, sunrise is at 7:06 am and sunset at 4:30 pm. On the last day of the month, sunrise is at 7:25 am and sunset at 4:40 pm CST.
Sunshine
The average sunshine in December in Annawan is 4.2h.UV index
In December, the average daily maximum UV index in Annawan is 2. A UV Index of 2, and less, symbolizes a minimal health vulnerability from exposure to the Sun's UV rays for average individuals.Note: The UV index of 2 during December leads to these advisories:
Although prolonged sun exposure does not typically bother most people, children, babies, and those with sensitive skin should always have protection. Considering the harmful UV rays from the Sun during midday, it's essential to reduce exposure. Fend off the sun's harsh rays with appropriate clothing, a wide-brim hat, and UV-protective sunglasses. Heed this! Snow reflection can almost augment the UV radiation of the sun by double.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Annawan, IL
- Average high temperature in December: 34.7°F
The warmest month (with the highest average high temperature) is July (81°F).
The month with the lowest average high temperature is January (28.8°F).
- Average low temperature in December: 24.1°F
The month with the highest average low temperature is July (64.6°F).
The coldest month (with the lowest average low temperature) is January (16.7°F).
Average pressure in December
Annawan, IL
- Average pressure in December: 30.11"Hg
The month with the highest atmospheric pressure is January (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed in December
Annawan, IL
- Average wind speed in December: 9.9mph
The windiest month (with the highest average wind speed) is April (10.6mph).
The calmest month (with the lowest average wind speed) is August (6.6mph).
Average humidity in December
Annawan, IL
- Average humidity in December: 82%
The month with the highest relative humidity is July (84%).
The month with the lowest relative humidity is October (72%).
Average rainfall in December
Annawan, IL
- Average rainfall in December: 1.42"
The wettest month (with the highest rainfall) is May (4.45").
The driest months (with the least rainfall) are January and December (1.42").
Average rainfall days in December
Annawan, IL
- Average rainfall days in December: 7.9 days
The month with the highest number of rainy days is May (18.3 days).
The month with the least rainy days is February (5.6 days).
Average snowfall in December
Annawan, IL
- Average snowfall in December: 1.97"
The month with the highest snowfall is January (3.66").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in December
Annawan, IL
- Average snowfall days in December: 7.3 days
The month with the highest number of snowfall days is January (11.4 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
Annawan, IL
- Average daylight in December: 9h and 12min
The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 12min).
- Average sunshine in December: 4h and 12min
The months with the most sunshine are June and July (Average sunshine: 10h and 0min).
The month with the least sunshine is January (Average sunshine: 3h and 54min).
Average sunshine days in December
Annawan, IL
- Average sunshine days in December: 17.5 days
The month with the most sunshine days is November (18 days).
The month with the least sunshine days is June (10.2 days).
Average UV index in December
Annawan, IL
- Average UV index in December: 2
The months with the highest UV index are June and July (UV index 6).
The month with the lowest UV index is January (UV index 1).
Average cloud cover in December
Annawan, IL
- Average cloud cover in December: 55
The month with the most cloud cover is January (Cloud cover 58).
The months with the least cloud cover are August and September (Cloud cover 30).
Average visibility in December
Annawan, 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).
