December weather forecastHartville, WY
December
Weather in December
December, the first month of the winter in Hartville, is also an icy month, with an average temperature varying between 19.2°F (-7.1°C) and 33.8°F (1°C).Temperature
December is the coldest month, with an average high-temperature of 33.8°F (1°C) and an average low-temperature of 19.2°F (-7.1°C).Humidity
In Hartville, the average relative humidity in December is 69%.Rainfall
In Hartville, during December, the rain falls for 3.2 days and regularly aggregates up to 0.39" (10mm) of precipitation. Throughout the year, there are 84.9 rainfall days, and 9.76" (248mm) of precipitation is accumulated.Snowfall
January through May, September through December are months with snowfall. In December, it is snowing for 7.2 days. Throughout December, 1.73" (44mm) of snow is accumulated. In Hartville, during the entire year, snow falls for 43 days and aggregates up to 18.27" (464mm) of snow.Daylight
The month with the shortest days in Hartville is December, with an average of 9h and 6min of daylight.On the first day of the month, sunrise is at 7:09 am and sunset at 4:27 pm. On the last day of December, sunrise is at 7:27 am and sunset at 4:36 pm MST.
Sunshine
In Hartville, the average sunshine in December is 6.5h.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 estimate of 2, and below, represents a minimal health hazard from exposure to the Sun's UV rays for the ordinary person.Note: The daily high UV index of 2 in December translates into this advice:
While most can endure approximately an hour in the sun without burning, children always require protection from sunlight. To guard against the harmful effects of the Sun, minimize exposure during midday. Select sunglasses that boast both UVA and UVB protection to limit the adverse effects of the sun on the eyes. Take heed! The reflection of snow can intensify the Sun's UV radiation nearly double.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Hartville, WY
- Average high temperature in December: 33.8°F
The warmest month (with the highest average high temperature) is July (86.2°F).
The month with the lowest average high temperature is December (33.8°F).
- Average low temperature in December: 19.2°F
The month with the highest average low temperature is July (62.2°F).
The coldest month (with the lowest average low temperature) is December (19.2°F).
Average pressure in December
Hartville, WY
- Average pressure in December: 30.13"Hg
The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.85"Hg).
Average wind speed in December
Hartville, WY
- Average wind speed in December: 11mph
The windiest month (with the highest average wind speed) is April (11.6mph).
The calmest month (with the lowest average wind speed) is August (8.9mph).
Average humidity in December
Hartville, WY
- Average humidity in December: 69%
The month with the highest relative humidity is February (70%).
The month with the lowest relative humidity is August (40%).
Average rainfall in December
Hartville, WY
- Average rainfall in December: 0.39"
The wettest month (with the highest rainfall) is May (1.93").
The driest month (with the least rainfall) is January (0.31").
Average rainfall days in December
Hartville, WY
- Average rainfall days in December: 3.2 days
The month with the highest number of rainy days is May (12.4 days).
The month with the least rainy days is February (2.8 days).
Average snowfall in December
Hartville, WY
- Average snowfall in December: 1.73"
The month with the highest snowfall is November (2.8").
The months with the least snowfall are June, July and August (0").
Average snowfall days in December
Hartville, WY
- Average snowfall days in December: 7.2 days
The month with the highest number of snowfall days is February (8.4 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in December /
Average sunshine in December
Hartville, WY
- Average daylight in December: 9h and 6min
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: 6h and 30min
The months with the most sunshine are July and August (Average sunshine: 11h and 48min).
The month with the least sunshine is February (Average sunshine: 6h and 24min).
Average sunshine days in December
Hartville, WY
- Average sunshine days in December: 21.7 days
The month with the most sunshine days is December (21.7 days).
The month with the least sunshine days is April (14.5 days).
Average UV index in December
Hartville, WY
- 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
Hartville, WY
- Average cloud cover in December: 31
The month with the most cloud cover is February (Cloud cover 33).
The month with the least cloud cover is August (Cloud cover 15).
Average visibility in December
Hartville, WY
- 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).
