December weather forecastPost Falls, ID
December
Weather in December
December plunges Post Falls into the peak of winter with its coldest temperatures and heaviest snowfall. This month registers a significant jump in snowfall, starkly contrasting November's 4.92" (125mm) with its own hefty 13.66" (347mm). Icy landscapes, frosted trees, and joyful Christmas lights embellish the city during this month. Winter sports and holidays festivities take center stage. As December winds down, the city of Post Falls embraces the thick blankets of snow, heralding the coldest month of January.Temperature
Post Falls's coldest temperatures are experienced in December, with average high temperatures of 31.3°F (-0.4°C) and lows of 21.2°F (-6°C).Humidity
In December, the average relative humidity is 90%.Rainfall
In Post Falls, during December, the rain falls for 10.8 days and regularly aggregates up to 3.15" (80mm) of precipitation. In Post Falls, during the entire year, the rain falls for 141.2 days and collects up to 22.6" (574mm) of precipitation.Snowfall
January through May, September through December are months with snowfall. In Post Falls, in December, snow falls for 16.9 days, with typically accumulated 13.66" (347mm) of snow. In Post Falls, during the entire year, snow falls for 71.8 days and aggregates up to 56.54" (1436mm) of snow.Daylight
December has the shortest days of the year, with an average of 8h and 30min of daylight.On the first day of December, sunrise is at 7:16 am and sunset at 3:57 pm. On the last day of the month, sunrise is at 7:36 am and sunset at 4:06 pm PST.
Sunshine
December has the least sunshine of the year, with an average of 3.4h of sunshine.UV index
February, November and December, with an average maximum UV index of 1, are months with the lowest UV index. A UV Index estimate of 2, and below, represents a minimal health vulnerability from exposure to the Sun's UV radiation for average individuals.Note: The maximum daily UV index of 1 during December translates into the following directions:
Long-term sun exposure is typically not a concern for most. However, those with sensitive skin, infants, and children must always have protection. Solar radiation peaks around mid-day, so it's wise to limit exposure to the Sun at this time. Arm yourself against UV rays' harm with protective apparel and UV-filtering shades. Mind this! Nearly twice the UV radiation from the Sun can be reflected by the snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Post Falls, ID
- Average high temperature in December: 31.3°F
The warmest month (with the highest average high temperature) is August (82°F).
The month with the lowest average high temperature is December (31.3°F).
- Average low temperature in December: 21.2°F
The month with the highest average low temperature is August (51.8°F).
The coldest month (with the lowest average low temperature) is December (21.2°F).
Average pressure in December
Post Falls, ID
- Average pressure in December: 30.17"Hg
The month with the highest atmospheric pressure is January (30.19"Hg).
The month with the lowest atmospheric pressure is August (29.91"Hg).
Average wind speed in December
Post Falls, ID
- Average wind speed in December: 3.9mph
The windiest month (with the highest average wind speed) is April (5mph).
The calmest month (with the lowest average wind speed) is December (3.9mph).
Average humidity in December
Post Falls, ID
- Average humidity in December: 90%
The month with the highest relative humidity is January (93%).
The month with the lowest relative humidity is August (48%).
Average rainfall in December
Post Falls, ID
- Average rainfall in December: 3.15"
The wettest month (with the highest rainfall) is January (3.27").
The driest months (with the least rainfall) are July and August (0.43").
Average rainfall days in December
Post Falls, ID
- Average rainfall days in December: 10.8 days
The month with the highest number of rainy days is March (17.5 days).
The month with the least rainy days is August (5.6 days).
Average snowfall in December
Post Falls, ID
- Average snowfall in December: 13.66"
The month with the highest snowfall is January (16.57").
The months with the least snowfall are June, July and August (0").
Average snowfall days in December
Post Falls, 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
Post Falls, ID
- Average daylight in December: 8h and 30min
The month with the longest days is June (Average daylight: 15h and 54min).
The month with the shortest days is December (Average daylight: 8h and 30min).
- Average sunshine in December: 3h and 24min
The month with the most sunshine is August (Average sunshine: 11h and 54min).
The month with the least sunshine is December (Average sunshine: 3h and 24min).
Average sunshine days in December
Post Falls, ID
- Average sunshine days in December: 9.9 days
The month with the most sunshine days is July (23.9 days).
The month with the least sunshine days is February (8.6 days).
Average UV index in December
Post Falls, 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
Post Falls, ID
- Average cloud cover in December: 64
The month with the most cloud cover is January (Cloud cover 65).
The month with the least cloud cover is August (Cloud cover 13).
Average visibility in December
Post Falls, ID
- Average visibility in December: 4mi
The months with the highest visibility are May, June, July, August, September and October (6mi).
The month with the lowest visibility is January (3mi).
