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
In Pleasant Plains, the beginning of December is marked by a lowered average high-temperature, shifting from November's cool 50°F (10°C) to a cold 38.5°F (3.6°C). Pleasant Plains sees an average low-temperature of 27.5°F (-2.5°C) during December.Humidity
In December, the average relative humidity in Pleasant Plains is 78%.Rainfall
December is the month with the least rainfall. Rain falls for 8.1 days and accumulates 1.5" (38mm) of precipitation.Snowfall
Months with snowfall are January through April, October through December. In Pleasant Plains, during December, snow falls for 4.8 days and regularly aggregates up to 1.46" (37mm) of snow. Throughout the year, there are 29.2 snowfall days, and 10.39" (264mm) of snow is accumulated.Daylight
With an average of 9h and 24min of daylight, December has the shortest days of the year.On the first day of the month, sunrise is at 7:02 am and sunset at 4:35 pm. On the last day of December, in Pleasant Plains, sunrise is at 7:20 am and sunset at 4:45 pm CST.
Sunshine
In Pleasant Plains, the average sunshine in December is 4.5h.UV index
The months with the lowest UV index are January, February, November and December, with an average maximum UV index of 2. A UV Index reading of 2, and below, represents a low threat to health from unprotected exposure to Sun's UV rays for ordinary individuals.Note: In December, a daily maximum UV index of 2 leads to the following instructions:
Although the majority can endure up to an hour in the sun without burns, children always require sun protection. Midday Sun has the strongest UV rays, making it crucial to limit exposure and find shade. Sunglasses that guard against UVA and UVB rays are pivotal in minimizing sun-induced ocular damage. Be on the lookout! Nearly twofold UV radiation from the Sun can be reflected by snow.
Frequently asked questions
How cold is it in Pleasant Plains in December?
What is the average humidity in December in Pleasant Plains?
What is the driest month in Pleasant Plains?
How much does it rain in Pleasant Plains in December?
How many days does it snow in December in Pleasant Plains?
What is the month with the shortest days in Pleasant Plains?
What is the average length of the day in December in Pleasant Plains?
When are sunrise and sunset in December in Pleasant Plains?
How long on average sun shines in December in Pleasant Plains?
What is the month with the lowest UV index in Pleasant Plains?
How high is the UV index in December in Pleasant Plains?
Average temperature in December
Pleasant Plains, IL
- Average high temperature in December: 38.5°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 (32.9°F).
- Average low temperature in December: 27.5°F
The month with the highest average low temperature is July (66°F).
The coldest month (with the lowest average low temperature) is January (20.7°F).
Average pressure in December
Pleasant Plains, IL
- Average pressure in December: 30.12"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
Pleasant Plains, IL
- Average wind speed in December: 9.7mph
The windiest months (with the highest average wind speed) are January, February and April (10.3mph).
The calmest months (with the lowest average wind speed) are July and August (6.3mph).
Average humidity in December
Pleasant Plains, IL
- Average humidity in December: 78%
The month with the highest relative humidity is July (84%).
The month with the lowest relative humidity is October (70%).
Average rainfall in December
Pleasant Plains, IL
- Average rainfall in December: 1.5"
The wettest month (with the highest rainfall) is May (3.82").
The driest month (with the least rainfall) is December (1.5").
Average rainfall days in December
Pleasant Plains, IL
- Average rainfall days in December: 8.1 days
The month with the highest number of rainy days is May (18.3 days).
The month with the least rainy days is February (6.2 days).
Average snowfall in December
Pleasant Plains, IL
- Average snowfall in December: 1.46"
The month with the highest snowfall is January (4.02").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in December
Pleasant Plains, IL
- Average snowfall days in December: 4.8 days
The month with the highest number of snowfall days is January (10.3 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
Pleasant Plains, 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 24min).
- Average sunshine in December: 4h and 3min
The month with the most sunshine is June (Average sunshine: 10h and 12min).
The month with the least sunshine is January (Average sunshine: 4h and 6min).
Average sunshine days in December
Pleasant Plains, IL
- Average sunshine days in December: 18.1 days
The month with the most sunshine days is November (18.5 days).
The month with the least sunshine days is May (11.3 days).
Average UV index in December
Pleasant Plains, 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
Pleasant Plains, IL
- Average cloud cover in December: 52
The month with the most cloud cover is January (Cloud cover 56).
The month with the least cloud cover is August (Cloud cover 30).
Average visibility in December
Pleasant Plains, 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).
Pleasant Plains, Illinois, USA
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