December weather forecastChester, ID
December
Weather in December
December, the first month of the winter in Chester, is still a freezing cold month, with temperature in the range of an average high of 26.2°F (-3.2°C) and an average low of 14.2°F (-9.9°C).Temperature
The month of December sees the lowest average temperatures, reaching 26.2°F (-3.2°C) at the peak and 14.2°F (-9.9°C) at the low.Humidity
The average relative humidity in December is 88%.Rainfall
In Chester, during December, the rain falls for 6.6 days and regularly aggregates up to 1.14" (29mm) of precipitation. Throughout the year, there are 97.5 rainfall days, and 11.85" (301mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through May, September through December. In Chester, during December, snow falls for 17.9 days and regularly aggregates up to 8.82" (224mm) of snow. In Chester, during the entire year, snow falls for 83.8 days and aggregates up to 41.93" (1065mm) of snow.Daylight
The month with the shortest days is December, with an average of 9h and 0min of daylight.On the first day of December, sunrise is at 7:41 am and sunset at 4:49 pm. On the last day of the month, sunrise is at 8:00 am and sunset at 4:58 pm MST.
Sunshine
In December, the average sunshine is 4.9h.UV index
The months with the lowest UV index are January, February, November and December, with an average maximum UV index of 1. A UV Index reading of 2, and below, represents a low health risk from exposure to the Sun's UV rays for ordinary individuals.Note: The daily high UV index of 1 in December translates into this advice:
Sun exposure does not present considerable issues for many, yet infants, fair-skinned people, and children necessitate constant protection. Being in direct Sun during midday can be harmful due to intense solar radiation; take precautions. Sunglasses that guard against UVA and UVB rays are pivotal in minimizing sun-induced ocular damage. Remember this! The UV radiation of the Sun can be nearly doubled by the reflective properties of snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Chester, ID
- Average high temperature in December: 26.2°F
The warmest month (with the highest average high temperature) is July (83.7°F).
The month with the lowest average high temperature is December (26.2°F).
- Average low temperature in December: 14.2°F
The month with the highest average low temperature is August (52.5°F).
The coldest month (with the lowest average low temperature) is January (12.4°F).
Average pressure in December
Chester, ID
- Average pressure in December: 30.26"Hg
The month with the highest atmospheric pressure is January (30.28"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed in December
Chester, ID
- Average wind speed in December: 4.3mph
The windiest month (with the highest average wind speed) is June (6.9mph).
The calmest month (with the lowest average wind speed) is January (4.2mph).
Average humidity in December
Chester, ID
- Average humidity in December: 88%
The month with the highest relative humidity is January (91%).
The month with the lowest relative humidity is August (39%).
Average rainfall in December
Chester, ID
- Average rainfall in December: 1.14"
The wettest month (with the highest rainfall) is January (1.5").
The driest month (with the least rainfall) is July (0.28").
Average rainfall days in December
Chester, ID
- Average rainfall days in December: 6.6 days
The month with the highest number of rainy days is April (13 days).
The month with the least rainy days is July (5 days).
Average snowfall in December
Chester, ID
- Average snowfall in December: 8.82"
The month with the highest snowfall is January (11.97").
The months with the least snowfall are June, July and August (0").
Average snowfall days in December
Chester, ID
- Average snowfall days in December: 17.9 days
The month with the highest number of snowfall days is January (18.1 days).
The months with the least snowfall days are July and August (0 days).
Average daylight in December /
Average sunshine in December
Chester, ID
- Average daylight in December: 9h and 0min
The month with the longest days is June (Average daylight: 15h and 24min).
The month with the shortest days is December (Average daylight: 9h and 0min).
- Average sunshine in December: 4h and 54min
The month with the most sunshine is July (Average sunshine: 12h and 6min).
The month with the least sunshine is January (Average sunshine: 4h and 18min).
Average sunshine days in December
Chester, ID
- Average sunshine days in December: 11.7 days
The month with the most sunshine days is July (24.8 days).
The month with the least sunshine days is February (10.6 days).
Average UV index in December
Chester, 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 January, February, November and December (UV index 1).
Average cloud cover in December
Chester, ID
- Average cloud cover in December: 52
The month with the most cloud cover is February (Cloud cover 56).
The months with the least cloud cover are July and August (Cloud cover 11).
Average visibility in December
Chester, ID
- Average visibility in December: 4mi
The months with the highest visibility are April, May, June, July, August, September, October and November (6mi).
The month with the lowest visibility is January (3mi).
