December weather forecastSalmon, ID
December
Weather in December
December heralds the true arrival of winter with cold temperatures, increased snowfall and reduced daylight hours. The landscapes of Salmon transform into a winter paradise, making it an ideal destination for winter sports. Known for exhibiting a significant drop in mercury levels, typical temperatures in December range from 9.5°F (-12.5°C) to 25.2°F (-3.8°C). This shift in weather parameters also manifests in the diminishing daylight hours and an escalation of snowfall days. Steeped in the spirit of the holiday season, this month offers a vibrant end to the weather journey across the year.Temperature
In Salmon, December is the month with the lowest recorded average temperatures, measuring a high of 25.2°F (-3.8°C) and a low of 9.5°F (-12.5°C).Humidity
The average relative humidity in December in Salmon is 86%.Rainfall
In December, the rain falls for 6.8 days. Throughout December, 0.55" (14mm) of precipitation is accumulated. In Salmon, during the entire year, the rain falls for 129.5 days and collects up to 12.4" (315mm) of precipitation.Snowfall
January through May, September through December are months with snowfall. In December, in Salmon, it is snowing for 10.4 days. Throughout December, 2.8" (71mm) of snow is accumulated. In Salmon, during the entire year, snow falls for 63.5 days and aggregates up to 22.76" (578mm) 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 7:54 am and sunset at 4:54 pm. On the last day of the month, sunrise is at 8:14 am and sunset at 5:03 pm MST.
Sunshine
The average sunshine in December is 5.2h.UV index
January, February and December, with an average maximum UV index of 1, are months with the lowest UV index in Salmon. A UV Index of 2, and less, symbolizes a minimal health vulnerability from unsafe exposure to UV radiation for ordinary individuals.Note: In December, a regular UV index of 1 translates into these guidelines:
Protection from prolonged sun exposure is necessary for babies, children, and individuals with sensitive skin. Given the potency of the midday Sun's UV radiation, one should avoid prolonged exposure. Safeguard your eyes, ears, and face from sun rays with the aid of a wide-brim hat. Be informed! The Sun's UV radiation can be nearly doubled due to the reflection from snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Salmon, ID
- Average high temperature in December: 25.2°F
The warmest month (with the highest average high temperature) is July (75.7°F).
The month with the lowest average high temperature is December (25.2°F).
- Average low temperature in December: 9.5°F
The month with the highest average low temperature is August (47.5°F).
The coldest months (with the lowest average low temperature) are January and December (9.5°F).
Average pressure in December
Salmon, ID
- Average pressure in December: 30.23"Hg
The month with the highest atmospheric pressure is January (30.25"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in December
Salmon, ID
- Average wind speed in December: 4.9mph
The windiest months (with the highest average wind speed) are March and April (5.2mph).
The calmest month (with the lowest average wind speed) is August (4.3mph).
Average humidity in December
Salmon, ID
- Average humidity in December: 86%
The month with the highest relative humidity is February (89%).
The month with the lowest relative humidity is August (43%).
Average rainfall in December
Salmon, ID
- Average rainfall in December: 0.55"
The wettest month (with the highest rainfall) is June (2.05").
The driest months (with the least rainfall) are July and August (0.51").
Average rainfall days in December
Salmon, ID
- Average rainfall days in December: 6.8 days
The month with the highest number of rainy days is May (18.3 days).
The month with the least rainy days is January (6.3 days).
Average snowfall in December
Salmon, ID
- Average snowfall in December: 2.8"
The month with the highest snowfall is February (5").
The months with the least snowfall are June, July and August (0").
Average snowfall days in December
Salmon, ID
- Average snowfall days in December: 10.4 days
The month with the highest number of snowfall days is February (12.3 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in December /
Average sunshine in December
Salmon, 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: 5h and 12min
The month with the most sunshine is July (Average sunshine: 11h and 48min).
The month with the least sunshine is January (Average sunshine: 5h and 6min).
Average sunshine days in December
Salmon, ID
- Average sunshine days in December: 18.5 days
The month with the most sunshine days is July (19.4 days).
The month with the least sunshine days is April (7.7 days).
Average UV index in December
Salmon, 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 and December (UV index 1).
Average cloud cover in December
Salmon, ID
- Average cloud cover in December: 49
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
Salmon, ID
- Average visibility in December: 4mi
The months with the highest visibility are May, June, July, August, September and October (6mi).
The months with the lowest visibility are January, February, March and December (4mi).
