December weather forecastRiggins, ID
December
Weather in December
December's weather in Riggins, Idaho brings an undeniable winter climate, complete with declining temperatures and accumulating snow. Compared to November, December shows continuation of the cold trend with increased snowfall. Looking towards January, little change occurs as the freeze goes on unabated. December stands out with a very high snowfall of 32.13" (816mm), a sign that the Idaho winter is well upon Riggins.Temperature
The coldest period tends to be December, when average temperatures fluctuate between a high of 25.3°F (-3.7°C) and a low of 12.7°F (-10.7°C).Humidity
In Riggins, the average relative humidity in December is 91%.Rainfall
In Riggins, in December, it is raining for 3.5 days, with typically 3.82" (97mm) of accumulated precipitation. Throughout the year, there are 81 rainfall days, and 32.68" (830mm) of precipitation is accumulated.Snowfall
January through December are months with snowfall. In Riggins, during December, snow falls for 22.1 days and regularly aggregates up to 32.13" (816mm) of snow. In Riggins, during the entire year, snow falls for 160 days and aggregates up to 210.63" (5350mm) of snow.Daylight
The month with the shortest days is December, with an average of 8h and 48min of daylight.On the first day of December, sunrise is at 7:05 am and sunset at 4:03 pm. On the last day of the month, sunrise is at 7:24 am and sunset at 4:12 pm PST.
Sunshine
The average sunshine in December in Riggins is 3.4h.UV index
The months with the lowest UV index are January through April, November and December, with an average maximum UV index of 1. A UV Index value of 2, and less, symbolizes a minimal health hazard from unsafe exposure to UV radiation for average individuals.Note: In December, an average UV index of 1 transforms into the following instructions:
Children must always have sun protection, unlike most people, who can tolerate up to an hour in the sun without any burns. When the Sun is at its strongest around midday, find shade and limit exposure. Shield yourself from the harmful effects of UV radiation with sun-protective attire, a hat, and quality sunglasses. Remember! The Sun's UV radiation can be magnified almost twofold by the reflection of snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Riggins, ID
- Average high temperature in December: 25.3°F
The warmest months (with the highest average high temperature) are July and August (75.7°F).
The month with the lowest average high temperature is December (25.3°F).
- Average low temperature in December: 12.7°F
The month with the highest average low temperature is August (45.7°F).
The coldest month (with the lowest average low temperature) is January (12°F).
Average pressure in December
Riggins, ID
- Average pressure in December: 30.21"Hg
The month with the highest atmospheric pressure is January (30.23"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in December
Riggins, ID
- Average wind speed in December: 5.9mph
The windiest month (with the highest average wind speed) is March (6mph).
The calmest months (with the lowest average wind speed) are May, June, August and September (5.3mph).
Average humidity in December
Riggins, ID
- Average humidity in December: 91%
The month with the highest relative humidity is February (94%).
The month with the lowest relative humidity is August (48%).
Average rainfall in December
Riggins, ID
- Average rainfall in December: 3.82"
The wettest month (with the highest rainfall) is February (4.49").
The driest month (with the least rainfall) is July (0.51").
Average rainfall days in December
Riggins, ID
- Average rainfall days in December: 3.5 days
The month with the highest number of rainy days is May (15.3 days).
The month with the least rainy days is January (1.8 days).
Average snowfall in December
Riggins, ID
- Average snowfall in December: 32.13"
The month with the highest snowfall is February (36.1").
The month with the least snowfall is August (0.08").
Average snowfall days in December
Riggins, ID
- Average snowfall days in December: 22.1 days
The month with the highest number of snowfall days is March (24.9 days).
The month with the least snowfall days is August (0.3 days).
Average daylight in December /
Average sunshine in December
Riggins, ID
- Average daylight in December: 8h and 48min
The month with the longest days is June (Average daylight: 15h and 36min).
The month with the shortest days is December (Average daylight: 8h and 48min).
- Average sunshine in December: 3h and 24min
The month with the most sunshine is July (Average sunshine: 11h and 36min).
The month with the least sunshine is January (Average sunshine: 3h and 18min).
Average sunshine days in December
Riggins, ID
- Average sunshine days in December: 9 days
The month with the most sunshine days is July (22.3 days).
The months with the least sunshine days are February and March (6.3 days).
Average UV index in December
Riggins, ID
- Average UV index in December: 1
The month with the highest UV index is July (UV index 5).
The months with the lowest UV index are January, February, March, April, November and December (UV index 1).
Average cloud cover in December
Riggins, ID
- Average cloud cover in December: 67
The month with the most cloud cover is February (Cloud cover 73).
The month with the least cloud cover is August (Cloud cover 13).
Average visibility in December
Riggins, ID
- Average visibility in December: 4mi
The months with the highest visibility are June, July, August, September and October (6mi).
The months with the lowest visibility are January and February (3mi).
