December weather forecastHillsboro, MO
December
Weather in December
December, the first month of the winter in Hillsboro, is also a frosty month, with an average temperature fluctuating between 43.3°F (6.3°C) and 30.4°F (-0.9°C).Temperature
In Hillsboro, entering December brings a temperature decrement, reducing from November's fresh 53.8°F (12.1°C) to a chilly 43.3°F (6.3°C). Nighttime temperature in Hillsboro experiences an average drop to a freezing cold 30.4°F (-0.9°C) in December.Humidity
The average relative humidity in December is 76%.Rainfall
In Hillsboro, in December, during 7.6 rainfall days, 2.05" (52mm) of precipitation is typically accumulated. In Hillsboro, during the entire year, the rain falls for 142.9 days and collects up to 28.5" (724mm) of precipitation.Snowfall
January through March, November and December are months with snowfall. In December, it is snowing for 4.6 days. Throughout December, 1.93" (49mm) of snow is accumulated. Throughout the year, there are 22.5 snowfall days, and 8.15" (207mm) of snow is accumulated.Daylight
With an average of 9h and 36min of daylight, December has the shortest days of the year in Hillsboro.On the first day of December in Hillsboro, sunrise is at 7:00 am and sunset at 4:42 pm. On the last day of the month, sunrise is at 7:18 am and sunset at 4:52 pm CST.
Sunshine
The average sunshine in December in Hillsboro is 5h.UV index
January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index in Hillsboro. A UV Index of 2, and less, symbolizes a minimal health hazard from exposure to the Sun's UV rays for the ordinary person.Note: An average UV index of 2 in December transforms into this advice:
While most people can stay under the sun for an hour without burning, children must always be guarded against sun exposure. Avoid the Sun's strongest UV rays by seeking shade and limiting exposure during midday. Limit sun-induced ocular harm with sunglasses that feature UVA and UVB filtration. Remember! The Sun's UV radiation can be magnified almost twofold by the reflection of snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Hillsboro, MO
- Average high temperature in December: 43.3°F
The warmest month (with the highest average high temperature) is July (87.8°F).
The month with the lowest average high temperature is January (39°F).
- Average low temperature in December: 30.4°F
The month with the highest average low temperature is July (68.4°F).
The coldest month (with the lowest average low temperature) is January (25.2°F).
Average pressure in December
Hillsboro, MO
- Average pressure in December: 30.13"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed in December
Hillsboro, MO
- Average wind speed in December: 8.1mph
The windiest month (with the highest average wind speed) is January (8.8mph).
The calmest month (with the lowest average wind speed) is August (5.2mph).
Average humidity in December
Hillsboro, MO
- Average humidity in December: 76%
The month with the highest relative humidity is May (78%).
The month with the lowest relative humidity is October (72%).
Average rainfall in December
Hillsboro, MO
- Average rainfall in December: 2.05"
The wettest month (with the highest rainfall) is May (3.46").
The driest month (with the least rainfall) is February (1.5").
Average rainfall days in December
Hillsboro, MO
- Average rainfall days in December: 7.6 days
The month with the highest number of rainy days is July (16.5 days).
The month with the least rainy days is January (7 days).
Average snowfall in December
Hillsboro, MO
- Average snowfall in December: 1.93"
The month with the highest snowfall is February (2.28").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in December
Hillsboro, MO
- Average snowfall days in December: 4.6 days
The month with the highest number of snowfall days is January (7.1 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
Hillsboro, MO
- Average daylight in December: 9h and 36min
The month with the longest days is June (Average daylight: 14h and 48min).
The month with the shortest days is December (Average daylight: 9h and 36min).
- Average sunshine in December: 5h and 0min
The month with the most sunshine is July (Average sunshine: 10h and 36min).
The month with the least sunshine is January (Average sunshine: 4h and 42min).
Average sunshine days in December
Hillsboro, MO
- Average sunshine days in December: 19.5 days
The month with the most sunshine days is December (19.5 days).
The month with the least sunshine days is July (11.4 days).
Average UV index in December
Hillsboro, MO
- 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
Hillsboro, MO
- Average cloud cover in December: 47
The month with the most cloud cover is January (Cloud cover 49).
The months with the least cloud cover are June, July and August (Cloud cover 28).
Average visibility in December
Hillsboro, MO
- 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).
