December weather forecastHarrisonville, MO
December
Weather in December
December, the first month of the winter in Harrisonville, is still a cold month, with temperature in the range of an average high of 41.7°F (5.4°C) and an average low of 28.2°F (-2.1°C).Temperature
December suggests a modest reduction in the average high-temperature, shifting from a cool 53.1°F (11.7°C) in November to a wintry 41.7°F (5.4°C). Harrisonville reports an average low-temperature of 28.2°F (-2.1°C) during the nights of December.Humidity
The average relative humidity in December is 74%.Rainfall
In Harrisonville, during December, the rain falls for 6.1 days and regularly aggregates up to 1.14" (29mm) of precipitation. Throughout the year, there are 129.2 rainfall days, and 22.2" (564mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through May, October through December. In Harrisonville, during December, snow falls for 2.5 days and regularly aggregates up to 0.71" (18mm) of snow. In Harrisonville, during the entire year, snow falls for 16.7 days and aggregates up to 6.1" (155mm) of snow.Daylight
With an average of 9h and 30min of daylight, December has the shortest days of the year.On the first day of December, sunrise is at 7:16 am and sunset at 4:56 pm. On the last day of the month, sunrise is at 7:35 am and sunset at 5:06 pm CST.
Sunshine
The average sunshine in December is 5.5h.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 of 2, and less, symbolizes a low health risk from exposure to the Sun's UV rays for ordinary individuals.Note: The maximum UV index of 2 during December translates into these guidelines:
Those with sensitive skin, infants, and children require constant safeguarding from prolonged sun exposure. Midday is when the Sun's radiation is strongest; avoid prolonged exposure during this time. For optimum UV protection, wear sun-resistant attire complemented with a hat and quality shades. Mind you! Snow reflection can increase the intensity of the Sun's UV radiation nearly twofold.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Harrisonville, MO
- Average high temperature in December: 41.7°F
The warmest month (with the highest average high temperature) is July (86.5°F).
The month with the lowest average high temperature is January (37.9°F).
- Average low temperature in December: 28.2°F
The month with the highest average low temperature is July (68.7°F).
The coldest month (with the lowest average low temperature) is January (23.5°F).
Average pressure in December
Harrisonville, MO
- Average pressure in December: 30.13"Hg
The month with the highest atmospheric pressure is January (30.17"Hg).
The month with the lowest atmospheric pressure is June (29.9"Hg).
Average wind speed in December
Harrisonville, MO
- Average wind speed in December: 9.4mph
The windiest month (with the highest average wind speed) is March (10.2mph).
The calmest months (with the lowest average wind speed) are July and August (6.5mph).
Average humidity in December
Harrisonville, MO
- Average humidity in December: 74%
The months with the highest relative humidity are May and June (80%).
The month with the lowest relative humidity is October (71%).
Average rainfall in December
Harrisonville, MO
- Average rainfall in December: 1.14"
The wettest month (with the highest rainfall) is May (3.62").
The driest month (with the least rainfall) is January (0.67").
Average rainfall days in December
Harrisonville, MO
- Average rainfall days in December: 6.1 days
The month with the highest number of rainy days is May (15.3 days).
The month with the least rainy days is January (5.2 days).
Average snowfall in December
Harrisonville, MO
- Average snowfall in December: 0.71"
The month with the highest snowfall is February (2.52").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Harrisonville, MO
- Average snowfall days in December: 2.5 days
The month with the highest number of snowfall days is February (5.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Harrisonville, MO
- Average daylight in December: 9h and 30min
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 30min).
- Average sunshine in December: 5h and 30min
The month with the most sunshine is July (Average sunshine: 10h and 30min).
The month with the least sunshine is January (Average sunshine: 5h and 12min).
Average sunshine days in December
Harrisonville, MO
- Average sunshine days in December: 22.9 days
The month with the most sunshine days is December (22.9 days).
The month with the least sunshine days is May (13 days).
Average UV index in December
Harrisonville, MO
- Average UV index in December: 2
The months with the highest UV index are May, 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
Harrisonville, MO
- Average cloud cover in December: 41
The month with the most cloud cover is March (Cloud cover 46).
The month with the least cloud cover is July (Cloud cover 25).
Average visibility in December
Harrisonville, 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).
