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
The commencement of December indicates a shift in the average high-temperature, receding from November's chilly 47.7°F (8.7°C) to a cold 36.5°F (2.5°C). In December, Fletcher experiences a temperature dip to an average of 26.1°F (-3.3°C) at night.Humidity
In December, the average relative humidity in Fletcher is 80%.Rainfall
The month with the least rainfall in Fletcher is December, when the rain falls for 9 days and typically collects 1.93" (49mm) of precipitation.Snowfall
Months with snowfall are January through April, October through December. In Fletcher, in December, during 8.2 snowfall days, 2.64" (67mm) of snow is typically accumulated. In Fletcher, Illinois, during the entire year, snow falls for 40.7 days and aggregates up to 17.01" (432mm) of snow.Daylight
With an average of 9h and 18min of daylight, December has the shortest days of the year.On the first day of the month, sunrise is at 6:59 am and sunset at 4:28 pm. On the last day of December, sunrise is at 7:18 am and sunset at 4:38 pm CST.
Sunshine
In December, the average sunshine is 4.2h.UV index
January, February, October through December, with an average maximum UV index of 2, are months with the lowest UV index in Fletcher. A UV Index reading of 2, and below, represents a minimal health hazard from exposure to the Sun's UV rays for average individuals.Note: The maximum daily UV index of 2 in December converts into the following recommendations:
Children, infants, and individuals with sensitive skin should be constantly protected from extended sun exposure. Exposing oneself to the midday Sun can be harmful due to the strong UV radiation; limit your time outside. Arm yourself against UV rays' harm with protective apparel and UV-filtering shades. Warning! The reflection from snow can nearly magnify the Sun's UV radiation twofold.
Frequently asked questions
How cold is it in Fletcher in December?
What is the average humidity in December in Fletcher?
What is the driest month in Fletcher?
How many days does it rain in December in Fletcher?
How much does it snow in Fletcher in December?
What is the month with the shortest days in Fletcher?
How many hours of daylight does Fletcher have in December?
When are sunrise and sunset in December in Fletcher?
How long on average sun shines in December in Fletcher?
What are the months with the lowest UV index in Fletcher?
What is the UV index intensity in December in Fletcher?
Average temperature in December
Fletcher, IL
- Average high temperature in December: 36.5°F
The warmest month (with the highest average high temperature) is July (80.8°F).
The month with the lowest average high temperature is January (30.7°F).
- Average low temperature in December: 26.1°F
The month with the highest average low temperature is July (64.9°F).
The coldest month (with the lowest average low temperature) is January (18.9°F).
Average pressure in December
Fletcher, IL
- Average pressure in December: 30.11"Hg
The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed in December
Fletcher, IL
- Average wind speed in December: 10.6mph
The windiest month (with the highest average wind speed) is January (11.1mph).
The calmest month (with the lowest average wind speed) is August (6.6mph).
Average humidity in December
Fletcher, IL
- Average humidity in December: 80%
The month with the highest relative humidity is July (86%).
The month with the lowest relative humidity is October (71%).
Average rainfall in December
Fletcher, IL
- Average rainfall in December: 1.93"
The wettest month (with the highest rainfall) is May (4.57").
The driest month (with the least rainfall) is December (1.93").
Average rainfall days in December
Fletcher, IL
- Average rainfall days in December: 9 days
The month with the highest number of rainy days is May (20.1 days).
The month with the least rainy days is February (6.9 days).
Average snowfall in December
Fletcher, IL
- Average snowfall in December: 2.64"
The month with the highest snowfall is January (5.04").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in December
Fletcher, IL
- Average snowfall days in December: 8.2 days
The month with the highest number of snowfall days is January (12.8 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
Fletcher, IL
- Average daylight in December: 9h and 2min
The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 18min).
- Average sunshine in December: 4h and 1min
The month with the most sunshine is June (Average sunshine: 9h and 48min).
The month with the least sunshine is January (Average sunshine: 3h and 42min).
Average sunshine days in December
Fletcher, IL
- Average sunshine days in December: 15 days
The month with the most sunshine days is November (17.4 days).
The month with the least sunshine days is May (8.4 days).
Average UV index in December
Fletcher, 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, October, November and December (UV index 2).
Average cloud cover in December
Fletcher, IL
- Average cloud cover in December: 56
The month with the most cloud cover is January (Cloud cover 60).
The months with the least cloud cover are August and September (Cloud cover 33).
Average visibility in December
Fletcher, IL
- Average visibility in December: 6mi
The months with the highest visibility are February, March, April, May, June, September, October, November and December (6mi).
The months with the lowest visibility are January, July and August (5mi).
Fletcher, Illinois, USA
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