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
December
Weather in December
Temperature
Temperature readings reach their annual highs in December, averaging 29.7°F (-1.3°C) and a minimum average of 19.4°F (-7°C).Humidity
In Oldtown, the average relative humidity in December is 91%.Rainfall
In Oldtown, Idaho, in December, it is raining for 7 days, with typically 2.52" (64mm) of accumulated precipitation. In Oldtown, during the entire year, the rain falls for 125.5 days and collects up to 19.92" (506mm) of precipitation.Snowfall
Months with snowfall are January through May, September through December. In December, it is snowing for 17.8 days. Throughout December, 14.17" (360mm) of snow is accumulated. Throughout the year, there are 81.4 snowfall days, and 58.11" (1476mm) of snow is accumulated.Daylight
The month with the shortest days is December, with an average of 8h and 24min of daylight.On the first day of the month, sunrise is at 7:18 am and sunset at 3:56 pm. On the last day of December, sunrise is at 7:38 am and sunset at 4:04 pm PST.
Sunshine
In Oldtown, the average sunshine in December is 3.4h.UV index
The months with the lowest UV index are February, November and December, with an average maximum UV index of 1. A UV Index value of 2, and less, symbolizes a minimal health vulnerability from exposure to the Sun's UV rays for ordinary individuals.Note: The average daily UV index of 1 in December transforms into the following instructions:
Prolonged sun exposure should always be prevented in babies, children, and those with sensitive skin. Around midday, solar radiation is most harmful; hence, exposure should be limited. Equip yourself with UVA and UVB-filtering sunglasses on clear, sunny days. Be alert! Nearly double the UV rays from the Sun can be reflected by snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What time of the year is the coldest?
How cold is December?
What is the average humidity in December?
How many days does it rain in December?
How much does it snow in December?
What is the month with the shortest days?
How many hours of daylight does Oldtown have in December?
When is the sunrise / sunset in December?
How many hours of sunshine does Oldtown have in December?
What is the month with the lowest UV index?
How high is the UV index in December in Oldtown?
Average temperature in December
Oldtown, ID
- Average high temperature in December: 29.7°F
The warmest month (with the highest average high temperature) is August (82°F).
The month with the lowest average high temperature is December (29.7°F).
- Average low temperature in December: 19.4°F
The month with the highest average low temperature is August (50.7°F).
The coldest month (with the lowest average low temperature) is January (19.2°F).
Average pressure in December
Oldtown, ID
- Average pressure in December: 30.18"Hg
The month with the highest atmospheric pressure is January (30.2"Hg).
The months with the lowest atmospheric pressure are June and August (29.91"Hg).
Average wind speed in December
Oldtown, ID
- Average wind speed in December: 3.4mph
The windiest month (with the highest average wind speed) is April (4.7mph).
The calmest month (with the lowest average wind speed) is December (3.4mph).
Average humidity in December
Oldtown, ID
- Average humidity in December: 91%
The month with the highest relative humidity is January (94%).
The month with the lowest relative humidity is August (49%).
Average rainfall in December
Oldtown, ID
- Average rainfall in December: 2.52"
The wettest month (with the highest rainfall) is January (2.64").
The driest month (with the least rainfall) is August (0.43").
Average rainfall days in December
Oldtown, ID
- Average rainfall days in December: 7 days
The month with the highest number of rainy days is April (16.7 days).
The month with the least rainy days is August (5.8 days).
Average snowfall in December
Oldtown, ID
- Average snowfall in December: 14.17"
The month with the highest snowfall is January (16.26").
The months with the least snowfall are June, July and August (0").
Average snowfall days in December
Oldtown, ID
- Average snowfall days in December: 17.8 days
The month with the highest number of snowfall days is December (17.8 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in December /
Average sunshine in December
Oldtown, ID
- Average daylight in December: 8h and 2min
The month with the longest days is June (Average daylight: 16h and 0min).
The month with the shortest days is December (Average daylight: 8h and 24min).
- Average sunshine in December: 3h and 2min
The month with the most sunshine is August (Average sunshine: 12h and 0min).
The month with the least sunshine is January (Average sunshine: 3h and 12min).
Average sunshine days in December
Oldtown, ID
- Average sunshine days in December: 12.3 days
The month with the most sunshine days is July (23.1 days).
The month with the least sunshine days is March (9.2 days).
Average UV index in December
Oldtown, ID
- Average UV index in December: 1
The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are February, November and December (UV index 1).
Average cloud cover in December
Oldtown, ID
- Average cloud cover in December: 65
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 14).
Average visibility in December
Oldtown, ID
- Average visibility in December: 3mi
The months with the highest visibility are May, June, July, August and September (6mi).
The months with the lowest visibility are January, February and December (3mi).