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
December, with its average high-temperature of 33.6°F (0.9°C) and an average low-temperature of 21.7°F (-5.7°C), holds the record as the coldest month in Grangeville.Humidity
The average relative humidity in December is 87%.Rainfall
In Grangeville, in December, it is raining for 9.1 days, with typically 2.2" (56mm) of accumulated precipitation. In Grangeville, during the entire year, the rain falls for 146.2 days and collects up to 23.35" (593mm) of precipitation.Snowfall
Months with snowfall in Grangeville are January through May, September through December. In December, it is snowing for 16.9 days. Throughout December, 12.8" (325mm) of snow is accumulated. Throughout the year, there are 80.3 snowfall days, and 60.47" (1536mm) of snow is accumulated.Daylight
December has the shortest days of the year, with an average of 8h and 42min of daylight.On the first day of December in Grangeville, sunrise is at 7:06 am and sunset at 4:01 pm. On the last day of the month, sunrise is at 7:26 am and sunset at 4:09 pm PST.
Sunshine
The average sunshine in December in Grangeville is 4.9h.UV index
The average daily maximum UV index in December in Grangeville is 2. A UV Index reading of 2, and below, represents a minimal health vulnerability from unprotected exposure to Sun's UV rays for the ordinary person.Note: The UV index of 2 in December translates into these instructions:
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. For excellent sun protection for the eyes, ears, face, and neck, consider a wide-brim hat. Be on the lookout! Nearly twofold UV radiation from the Sun can be reflected by snow.
Frequently asked questions
What time of the year is the coldest in Grangeville?
How cold is it in Grangeville in December?
What is the average humidity in December in Grangeville?
How many days does it rain in December in Grangeville?
How much does it snow in Grangeville in December?
What is the month with the shortest days in Grangeville?
How many hours of daylight does Grangeville have in December?
When is the sunrise / sunset in December in Grangeville?
How many hours of sunshine does Grangeville have in December?
What is the UV index reading in December in Grangeville?
Average temperature in December
Grangeville, ID
- Average high temperature in December: 33.6°F
The warmest month (with the highest average high temperature) is August (82.6°F).
The month with the lowest average high temperature is December (33.6°F).
- Average low temperature in December: 21.7°F
The month with the highest average low temperature is August (53.2°F).
The coldest month (with the lowest average low temperature) is December (21.7°F).
Average pressure in December
Grangeville, ID
- Average pressure in December: 30.19"Hg
The month with the highest atmospheric pressure is January (30.21"Hg).
The months with the lowest atmospheric pressure are June and August (29.94"Hg).
Average wind speed in December
Grangeville, ID
- Average wind speed in December: 4.8mph
The windiest months (with the highest average wind speed) are January and November (4.9mph).
The calmest month (with the lowest average wind speed) is August (3.8mph).
Average humidity in December
Grangeville, ID
- Average humidity in December: 87%
The month with the highest relative humidity is January (88%).
The month with the lowest relative humidity is August (47%).
Average rainfall in December
Grangeville, ID
- Average rainfall in December: 2.2"
The wettest month (with the highest rainfall) is April (2.91").
The driest month (with the least rainfall) is July (0.59").
Average rainfall days in December
Grangeville, ID
- Average rainfall days in December: 9.1 days
The month with the highest number of rainy days is April (19.3 days).
The month with the least rainy days is August (6.8 days).
Average snowfall in December
Grangeville, ID
- Average snowfall in December: 12.8"
The month with the highest snowfall is February (12.95").
The months with the least snowfall are June, July and August (0").
Average snowfall days in December
Grangeville, ID
- Average snowfall days in December: 16.9 days
The month with the highest number of snowfall days is December (16.9 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in December /
Average sunshine in December
Grangeville, ID
- Average daylight in December: 8h and 4min
The month with the longest days is June (Average daylight: 15h and 42min).
The month with the shortest days is December (Average daylight: 8h and 42min).
- Average sunshine in December: 4h and 5min
The month with the most sunshine is August (Average sunshine: 11h and 54min).
The month with the least sunshine is January (Average sunshine: 4h and 48min).
Average sunshine days in December
Grangeville, ID
- Average sunshine days in December: 11.5 days
The month with the most sunshine days is August (22.2 days).
The month with the least sunshine days is March (7.5 days).
Average UV index in December
Grangeville, ID
- Average UV index in December: 2
The month with the highest UV index is July (UV index 6).
The month with the lowest UV index is February (UV index 1).
Average cloud cover in December
Grangeville, ID
- Average cloud cover in December: 50
The month with the most cloud cover is February (Cloud cover 53).
The month with the least cloud cover is August (Cloud cover 13).
Average visibility in December
Grangeville, ID
- Average visibility in December: 4mi
The months with the highest visibility are May, June, July, August, September, October and November (6mi).
The months with the lowest visibility are January, February and December (4mi).
Grangeville, Idaho, USA
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