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 transition into December indicates a reduction in the average high-temperature, down to a wintry 36.5°F (2.5°C) from November's chilly 47.3°F (8.5°C). December registers an average low temperature of 28.2°F (-2.1°C), subtly lower than the daytime maximum.Humidity
The average relative humidity in December is 81%.Rainfall
In Williston, in December, during 7.5 rainfall days, 0.83" (21mm) of precipitation is typically accumulated. Throughout the year, there are 136.8 rainfall days, and 16.14" (410mm) of precipitation is accumulated.Snowfall
January through April, October through December are months with snowfall. In Williston, in December, snow falls for 8.9 days, with typically accumulated 1.26" (32mm) of snow. Throughout the year, there are 39.7 snowfall days, and 6.97" (177mm) of snow is accumulated.Daylight
The month with the shortest days is December, with an average of 9h and 12min of daylight.On the first day of the month, sunrise is at 7:41 am and sunset at 5:04 pm. On the last day of December, sunrise is at 7:59 am and sunset at 5:13 pm EST.
Sunshine
In Williston, the average sunshine in December is 3.6h.UV index
December is the month with the lowest UV index in Williston, with an average maximum UV index of 1. A UV Index reading of 2, and below, represents a low health risk from unsafe exposure to UV radiation for the average person.Note: The maximum UV index, 1 during December, leads to the following recommendations:
Children necessitate constant protection from sunlight, unlike the majority, who can remain under the sun for about an hour without burning. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. Experience reduced UV exposure by about half when donning a wide-brim hat. Take to heart! Snow reflection can almost magnify the Sun's UV radiation twofold.
Frequently asked questions
How cold is it in Williston in December?
What is the average humidity in December in Williston?
How much does it rain in Williston in December?
How much does it snow in Williston in December?
What is the month with the shortest days in Williston?
How many hours of daylight does Williston have in December?
What time are sunrise and sunset in December in Williston?
How long on average sun shines in December in Williston?
When is the lowest UV index in Williston?
What is the UV index intensity in December in Williston?
Average temperature in December
Williston, OH
- Average high temperature in December: 36.5°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 (30.7°F).
- Average low temperature in December: 28.2°F
The month with the highest average low temperature is July (64.8°F).
The coldest month (with the lowest average low temperature) is January (19.9°F).
Average pressure in December
Williston, OH
- Average pressure in December: 30.09"Hg
The month with the highest atmospheric pressure is November (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in December
Williston, OH
- Average wind speed in December: 10.2mph
The windiest month (with the highest average wind speed) is January (10.9mph).
The calmest month (with the lowest average wind speed) is July (6.5mph).
Average humidity in December
Williston, OH
- Average humidity in December: 81%
The month with the highest relative humidity is February (84%).
The month with the lowest relative humidity is October (74%).
Average rainfall in December
Williston, OH
- Average rainfall in December: 0.83"
The wettest months (with the highest rainfall) are June and July (1.97").
The driest month (with the least rainfall) is February (0.79").
Average rainfall days in December
Williston, OH
- Average rainfall days in December: 7.5 days
The month with the highest number of rainy days is May (16.3 days).
The month with the least rainy days is January (5.3 days).
Average snowfall in December
Williston, OH
- Average snowfall in December: 1.26"
The month with the highest snowfall is February (1.97").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in December
Williston, OH
- Average snowfall days in December: 8.9 days
The month with the highest number of snowfall days is January (10.6 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Williston, OH
- Average daylight in December: 9h and 1min
The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 12min).
- Average sunshine in December: 3h and 4min
The month with the most sunshine is July (Average sunshine: 10h and 12min).
The month with the least sunshine is January (Average sunshine: 3h and 12min).
Average sunshine days in December
Williston, OH
- Average sunshine days in December: 17.1 days
The month with the most sunshine days is November (17.5 days).
The month with the least sunshine days is June (12.2 days).
Average UV index in December
Williston, OH
- Average UV index in December: 1
The months with the highest UV index are June, July and August (UV index 6).
The month with the lowest UV index is December (UV index 1).
Average cloud cover in December
Williston, OH
- Average cloud cover in December: 62
The month with the most cloud cover is January (Cloud cover 66).
The months with the least cloud cover are July and August (Cloud cover 30).
Average visibility in December
Williston, OH
- 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).
Williston, Ohio, USA
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