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 onset of December introduces a moderate change in Pecatonica's weather, with average high-temperatures falling from November's frosty 44.8°F (7.1°C) to an icy 32.5°F (0.3°C). Throughout the nights in December, an average low-temperature of 22.5°F (-5.3°C) is noted.Humidity
In December, the average relative humidity is 83%.Rainfall
In December, the rain falls for 4.6 days. Throughout December, 0.39" (10mm) of precipitation is accumulated. In Pecatonica, during the entire year, the rain falls for 100.6 days and collects up to 7.99" (203mm) of precipitation.Snowfall
January through April, October through December are months with snowfall. In Pecatonica, in December, during 6.6 snowfall days, 0.35" (9mm) of snow is typically accumulated. In Pecatonica, during the entire year, snow falls for 29.5 days and aggregates up to 3.66" (93mm) of snow.Daylight
The month with the shortest days in Pecatonica is December, with an average of 9h and 6min of daylight.On the first day of December in Pecatonica, sunrise is at 7:07 am and sunset at 4:25 pm. On the last day of the month, sunrise is at 7:26 am and sunset at 4:35 pm CST.
Sunshine
In December, the average sunshine in Pecatonica is 3.9h.UV index
The months with the lowest UV index are January and December, with an average maximum UV index of 1. A UV Index of 2, and less, symbolizes a low health risk from exposure to the Sun's UV rays for the average person.Note: In December, the maximum UV index of 1 translates into these guidelines:
Although the majority can endure up to an hour in the sun without burns, children always require sun protection. The Sun's radiation is especially intense around midday; try to stay in shade during this period. Counter UV radiation's ill effects with clothing designed for sun safety and UV-resistant eyewear. Guard yourself! Snow reflection can almost double the UV radiation from the Sun.
Frequently asked questions
How cold is December in Pecatonica?
What is the average humidity in December in Pecatonica?
How much does it rain in Pecatonica in December?
How much does it snow in Pecatonica in December?
What is the month with the shortest days in Pecatonica?
What is the average length of the day in December in Pecatonica?
When is the sunrise / sunset in December in Pecatonica?
How long on average sun shines in December in Pecatonica?
What are the months with the lowest UV index in Pecatonica?
How high is the UV index in December in Pecatonica?
Average temperature in December
Pecatonica, IL
- Average high temperature in December: 32.5°F
The warmest month (with the highest average high temperature) is July (79.9°F).
The month with the lowest average high temperature is January (26.2°F).
- Average low temperature in December: 22.5°F
The month with the highest average low temperature is July (63.1°F).
The coldest month (with the lowest average low temperature) is January (14°F).
Average pressure in December
Pecatonica, IL
- Average pressure in December: 30.1"Hg
The month with the highest atmospheric pressure is January (30.12"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed in December
Pecatonica, IL
- Average wind speed in December: 9.4mph
The windiest month (with the highest average wind speed) is April (10.2mph).
The calmest month (with the lowest average wind speed) is August (6.3mph).
Average humidity in December
Pecatonica, IL
- Average humidity in December: 83%
The month with the highest relative humidity is January (86%).
The months with the lowest relative humidity are April and October (75%).
Average rainfall in December
Pecatonica, IL
- Average rainfall in December: 0.39"
The wettest month (with the highest rainfall) is May (1.18").
The driest months (with the least rainfall) are January and February (0.35").
Average rainfall days in December
Pecatonica, IL
- Average rainfall days in December: 4.6 days
The month with the highest number of rainy days is May (13.8 days).
The month with the least rainy days is January (3.2 days).
Average snowfall in December
Pecatonica, IL
- Average snowfall in December: 0.35"
The month with the highest snowfall is January (1.42").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in December
Pecatonica, IL
- Average snowfall days in December: 6.6 days
The month with the highest number of snowfall days is January (8.1 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
Pecatonica, IL
- Average daylight in December: 9h and 1min
The month with the longest days is June (Average daylight: 15h and 12min).
The month with the shortest days is December (Average daylight: 9h and 6min).
- Average sunshine in December: 3h and 5min
The month with the most sunshine is July (Average sunshine: 9h and 48min).
The month with the least sunshine is January (Average sunshine: 3h and 42min).
Average sunshine days in December
Pecatonica, 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 (12.8 days).
Average UV index in December
Pecatonica, IL
- Average UV index in December: 1
The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January and December (UV index 1).
Average cloud cover in December
Pecatonica, IL
- Average cloud cover in December: 59
The month with the most cloud cover is January (Cloud cover 62).
The month with the least cloud cover is September (Cloud cover 33).
Average visibility in December
Pecatonica, 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).
Pecatonica, Illinois, USA
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