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
A shift in the average high-temperature occurs in December, reducing from a frosty 49.3°F (9.6°C) in November to a wintry 37.6°F (3.1°C). Hamilton observes an average low-temperature of 25.9°F (-3.4°C) during December nights.Humidity
In December, the average relative humidity in Hamilton, Illinois, is 78%.Rainfall
In Hamilton, Illinois, in December, it is raining for 6.2 days, with typically 1.02" (26mm) of accumulated precipitation. Throughout the year, there are 129.9 rainfall days, and 20.71" (526mm) of precipitation is accumulated.Snowfall
January through April, October through December are months with snowfall. In December, it is snowing for 4.9 days. Throughout December, 1.18" (30mm) of snow is accumulated. Throughout the year, there are 25.2 snowfall days, and 8.03" (204mm) of snow is accumulated.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 7:09 am and sunset at 4:39 pm. On the last day of December, in Hamilton, sunrise is at 7:28 am and sunset at 4:49 pm CST.
Sunshine
In Hamilton, the average sunshine in December is 4.8h.UV index
The months with the lowest UV index in Hamilton are January, February, November and December, with an average maximum UV index of 2. A UV Index value of 2, and less, symbolizes a minimal health hazard from unsafe exposure to UV radiation for the average person.Note: An average UV index of 2 in December transforms into this advice:
Infants, children, and people with sensitive skin should always have protection against lengthy periods of sun exposure. It's recommended to limit sun exposure when its radiation is at its peak during midday. Clothes that are both tight-knit and comfortably loose are prime choices for sun protection. Take to heart! Snow reflection can almost magnify the Sun's UV radiation twofold.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold does it get in Hamilton in December?
What is the average humidity in December in Hamilton?
How many days does it rain in December in Hamilton?
How many days does it snow in December in Hamilton?
What is the month with the shortest days in Hamilton?
What is the average length of the day in December in Hamilton?
What time are sunrise and sunset in December in Hamilton?
How long on average sun shines in December in Hamilton?
What is the month with the lowest UV index in Hamilton?
What is the UV index intensity in December in Hamilton?
Average temperature in December
Hamilton, IL
- Average high temperature in December: 37.6°F
The warmest month (with the highest average high temperature) is July (83.3°F).
The month with the lowest average high temperature is January (31.3°F).
- Average low temperature in December: 25.9°F
The month with the highest average low temperature is July (66.4°F).
The coldest month (with the lowest average low temperature) is January (19.2°F).
Average pressure in December
Hamilton, 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 (29.9"Hg).
Average wind speed in December
Hamilton, IL
- Average wind speed in December: 9.9mph
The windiest months (with the highest average wind speed) are January and February (10.4mph).
The calmest months (with the lowest average wind speed) are July and August (6.6mph).
Average humidity in December
Hamilton, IL
- Average humidity in December: 78%
The month with the highest relative humidity is July (82%).
The month with the lowest relative humidity is October (70%).
Average rainfall in December
Hamilton, IL
- Average rainfall in December: 1.02"
The wettest month (with the highest rainfall) is May (2.91").
The driest month (with the least rainfall) is January (0.83").
Average rainfall days in December
Hamilton, IL
- Average rainfall days in December: 6.2 days
The month with the highest number of rainy days is May (16.8 days).
The month with the least rainy days is February (4.5 days).
Average snowfall in December
Hamilton, IL
- Average snowfall in December: 1.18"
The month with the highest snowfall is January (2.91").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in December
Hamilton, IL
- Average snowfall days in December: 4.9 days
The month with the highest number of snowfall days is January (7.9 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
Hamilton, 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 5min
The month with the most sunshine is July (Average sunshine: 10h and 18min).
The month with the least sunshine is January (Average sunshine: 4h and 18min).
Average sunshine days in December
Hamilton, IL
- Average sunshine days in December: 20.4 days
The month with the most sunshine days is December (20.4 days).
The month with the least sunshine days is June (11.5 days).
Average UV index in December
Hamilton, 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
Hamilton, IL
- Average cloud cover in December: 49
The month with the most cloud cover is January (Cloud cover 54).
The months with the least cloud cover are July and August (Cloud cover 28).
Average visibility in December
Hamilton, 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).
Hamilton, Illinois, USA
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