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
Dow's December weather comes with a decrease in average high-temperatures, moving from a cool 51.8°F (11°C) in November to a cold 40.6°F (4.8°C). Dow, in the month of December, anticipates a consistent average low-temperature of 29.3°F (-1.5°C).Humidity
In December, the average relative humidity in Dow, Illinois, is 77%.Rainfall
In Dow, during December, the rain falls for 7.5 days and regularly aggregates up to 1.3" (33mm) of precipitation. Throughout the year, in Dow, Illinois, there are 136.5 rainfall days, and 23.11" (587mm) of precipitation is accumulated.Snowfall
January through March, November and December are months with snowfall in Dow. In December, it is snowing for 4.4 days. Throughout December, 1.18" (30mm) of snow is accumulated. In Dow, during the entire year, snow falls for 20.9 days and aggregates up to 6.26" (159mm) of snow.Daylight
December has the shortest days of the year in Dow, Illinois, with an average of 9h and 30min of daylight.On the first day of the month, sunrise is at 7:01 am and sunset at 4:39 pm. On the last day of December, in Dow, sunrise is at 7:20 am and sunset at 4:49 pm CST.
Sunshine
In Dow, the average sunshine in December is 4.9h.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 estimate of 2, and below, represents a minimal health vulnerability from unprotected exposure to Sun's UV rays for average individuals.Note: The maximum daily UV index, 2 in December, converts into the following recommendations:
While most people can stay under the sun for an hour without burning, children must always be guarded against sun exposure. Considering the Sun's intensity during midday, it's wise to minimize direct exposure. Enhance your sun protection with tightly woven, yet airy clothing. Be attentive! The reflective property of snow can nearly double the Sun's UV radiation.
Frequently asked questions
How cold does it get in Dow in December?
What is the average humidity in December in Dow?
How much does it rain in Dow in December?
How many days does it snow in December in Dow?
What is the month with the shortest days in Dow?
What is the average length of the day in December in Dow?
When is the sunrise / sunset in December in Dow?
How many hours of sunshine does Dow have in December?
When is the lowest UV index in Dow?
How high is the UV index in December in Dow?
Average temperature in December
Dow, IL
- Average high temperature in December: 40.6°F
The warmest month (with the highest average high temperature) is July (84.7°F).
The month with the lowest average high temperature is January (35.6°F).
- Average low temperature in December: 29.3°F
The month with the highest average low temperature is July (67.6°F).
The coldest month (with the lowest average low temperature) is January (22.6°F).
Average pressure in December
Dow, 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
Dow, IL
- Average wind speed in December: 9.1mph
The windiest months (with the highest average wind speed) are January and February (9.6mph).
The calmest month (with the lowest average wind speed) is July (5.7mph).
Average humidity in December
Dow, IL
- Average humidity in December: 77%
The month with the highest relative humidity is July (80%).
The month with the lowest relative humidity is October (71%).
Average rainfall in December
Dow, IL
- Average rainfall in December: 1.3"
The wettest month (with the highest rainfall) is June (3.07").
The driest month (with the least rainfall) is January (1.06").
Average rainfall days in December
Dow, IL
- Average rainfall days in December: 7.5 days
The month with the highest number of rainy days is May (16.5 days).
The month with the least rainy days is January (5.9 days).
Average snowfall in December
Dow, IL
- Average snowfall in December: 1.18"
The month with the highest snowfall is February (2.17").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in December
Dow, IL
- Average snowfall days in December: 4.4 days
The month with the highest number of snowfall days is January (6.2 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
Dow, IL
- Average daylight in December: 9h and 3min
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 30min).
- 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 30min).
Average sunshine days in December
Dow, IL
- Average sunshine days in December: 19.4 days
The month with the most sunshine days is January (20.3 days).
The months with the least sunshine days are May and June (12.3 days).
Average UV index in December
Dow, IL
- 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
Dow, IL
- Average cloud cover in December: 48
The month with the most cloud cover is January (Cloud cover 51).
The months with the least cloud cover are August and September (Cloud cover 28).
Average visibility in December
Dow, IL
- 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).
Dow, Illinois, USA
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