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
Weather in December
Temperature
During the coldest month in Caldwell, December, temperatures average a high of 36.3°F (2.4°C) and a low of 24.8°F (-4°C).Humidity
In December, the average relative humidity is 76%.Rainfall
In December, in Caldwell, Idaho, the rain falls for 9.9 days. Throughout December, 1.34" (34mm) of precipitation is accumulated. Throughout the year, there are 103.7 rainfall days, and 9.84" (250mm) of precipitation is accumulated.Snowfall
Months with snowfall in Caldwell, Idaho, are January through April, November and December. The month with the most snowfall in Caldwell is December, when snow falls for 7.2 days and typically aggregates up to 3.35" (85mm) of snow.Daylight
The month with the shortest days in Caldwell is December, with an average of 9h and 0min of daylight.On the first day of the month, sunrise is at 8:01 am and sunset at 5:11 pm. On the last day of December, sunrise is at 8:20 am and sunset at 5:20 pm MST.
Sunshine
December has the least sunshine of the year in Caldwell, with an average of 5.7h of sunshine.UV index
The months with the lowest UV index are January, February, November and December, with an average maximum UV index of 2. A UV Index reading of 2, and below, represents a low threat to health from exposure to the Sun's UV radiation for ordinary individuals.Note: In December, the average maximum UV index of 2 translates into the following recommendations:
Extended sun exposure is not an issue for the majority. Children, infants, and fair-skinned individuals always need to be protected. The Sun's radiation is especially intense around midday; try to stay in shade during this period. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes. Stay alert! Snow's reflective properties can almost double the UV radiation from the Sun.
Frequently asked questions
What part of the year is the coldest in Caldwell?
How cold is it in Caldwell in December?
What is the average humidity in December in Caldwell?
How much does it rain in Caldwell in December?
When does it snow the most in Caldwell?
How many days does it snow in December in Caldwell?
What is the month with the shortest days in Caldwell?
How many hours of daylight does Caldwell have in December?
What time are sunrise and sunset in December in Caldwell?
What is the month with the least sunshine in Caldwell?
How long on average sun shines in December in Caldwell?
What is the month with the lowest UV index in Caldwell?
How high is the UV index in December in Caldwell?
Average temperature in December
Caldwell, ID
- Average high temperature in December: 36.3°F
The warmest month (with the highest average high temperature) is July (90.9°F).
The month with the lowest average high temperature is December (36.3°F).
- Average low temperature in December: 24.8°F
The month with the highest average low temperature is August (62.8°F).
The coldest month (with the lowest average low temperature) is December (24.8°F).
Average pressure in December
Caldwell, ID
- Average pressure in December: 30.21"Hg
The month with the highest atmospheric pressure is January (30.25"Hg).
The months with the lowest atmospheric pressure are June and August (29.91"Hg).
Average wind speed in December
Caldwell, ID
- Average wind speed in December: 5.9mph
The windiest month (with the highest average wind speed) is April (7.3mph).
The calmest month (with the lowest average wind speed) is January (5.2mph).
Average humidity in December
Caldwell, ID
- Average humidity in December: 76%
The month with the highest relative humidity is January (79%).
The month with the lowest relative humidity is August (29%).
Average rainfall in December
Caldwell, ID
- Average rainfall in December: 1.34"
The wettest month (with the highest rainfall) is March (1.38").
The driest month (with the least rainfall) is July (0.16").
Average rainfall days in December
Caldwell, ID
- Average rainfall days in December: 9.9 days
The month with the highest number of rainy days is March (15.1 days).
The month with the least rainy days is August (3.5 days).
Average snowfall in December
Caldwell, ID
- Average snowfall in December: 3.35"
The month with the highest snowfall is December (3.35").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in December
Caldwell, ID
- Average snowfall days in December: 7.2 days
The month with the highest number of snowfall days is December (7.2 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Caldwell, 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: 5h and 4min
The month with the most sunshine is July (Average sunshine: 12h and 6min).
The month with the least sunshine is December (Average sunshine: 5h and 42min).
Average sunshine days in December
Caldwell, ID
- Average sunshine days in December: 17 days
The month with the most sunshine days is July (23.3 days).
The month with the least sunshine days is March (14.6 days).
Average UV index in December
Caldwell, ID
- Average UV index in December: 2
The month with the highest UV index is July (UV index 7).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in December
Caldwell, ID
- Average cloud cover in December: 39
The month with the most cloud cover is December (Cloud cover 39).
The months with the least cloud cover are July and August (Cloud cover 8).
Average visibility in December
Caldwell, ID
- Average visibility in December: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
Caldwell, Idaho, USA
Weather forecast for your location
2. Allow the app to use your location
