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
December stands out as Jerome's coldest month, with temperatures ranging between an average high of 32.9°F (0.5°C) and a low of 21.9°F (-5.6°C).Humidity
In Jerome, the average relative humidity in December is 79%.Rainfall
December is the month with the most rainfall. Rain falls for 7.4 days and accumulates 1.3" (33mm) of precipitation.Snowfall
Months with snowfall are January through April, October through December. In Jerome, Idaho, in December, snow falls for 10.8 days, with typically accumulated 6.14" (156mm) of snow. Throughout the year, there are 42 snowfall days, and 23.35" (593mm) of snow is accumulated.Daylight
December has the shortest days of the year, with an average of 9h and 6min of daylight.On the first day of the month, sunrise is at 7:49 am and sunset at 5:05 pm. On the last day of December, sunrise is at 8:08 am and sunset at 5:14 pm MST.
Sunshine
December has the least sunshine of the year, with an average of 5.7h of sunshine.UV index
January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index. A UV Index reading of 2, and below, represents a low health risk from unsafe exposure to UV radiation for the average person.Note: An average UV index of 2 in December transforms into this advice:
While most people are not greatly affected by extended sun exposure, those with fair skin, babies, and children must always have protection. Solar radiation is at its peak intensity during midday, so it's advisable to stay indoors or in the shade. Protect your eyes, ears, face, and neck from the Sun by wearing a wide-brimmed 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
What time of the year is the coldest?
How cold is December?
What is the average humidity in December?
What is the rainiest month?
How many days does it rain in December?
How many days does it snow in December?
What is the month with the shortest days?
What is the average length of the day in December in Jerome?
What time are sunrise and sunset in December?
What is the month with the least sunshine?
How many hours of sunshine does Jerome have in December?
What are the months with the lowest UV index?
What is the UV index intensity in December?
Average temperature in December
Jerome, ID
- Average high temperature in December: 32.9°F
The warmest month (with the highest average high temperature) is July (89.6°F).
The month with the lowest average high temperature is December (32.9°F).
- Average low temperature in December: 21.9°F
The month with the highest average low temperature is July (60.8°F).
The coldest month (with the lowest average low temperature) is December (21.9°F).
Average pressure in December
Jerome, ID
- Average pressure in December: 30.24"Hg
The month with the highest atmospheric pressure is January (30.28"Hg).
The month with the lowest atmospheric pressure is June (29.87"Hg).
Average wind speed in December
Jerome, ID
- Average wind speed in December: 7.5mph
The windiest month (with the highest average wind speed) is April (9.5mph).
The calmest month (with the lowest average wind speed) is August (7mph).
Average humidity in December
Jerome, ID
- Average humidity in December: 79%
The month with the highest relative humidity is January (80%).
The months with the lowest relative humidity are July and August (29%).
Average rainfall in December
Jerome, ID
- Average rainfall in December: 1.3"
The wettest month (with the highest rainfall) is December (1.3").
The driest month (with the least rainfall) is July (0.16").
Average rainfall days in December
Jerome, ID
- Average rainfall days in December: 7.4 days
The month with the highest number of rainy days is March (11.3 days).
The month with the least rainy days is July (3.3 days).
Average snowfall in December
Jerome, ID
- Average snowfall in December: 6.14"
The month with the highest snowfall is January (7.44").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in December
Jerome, ID
- Average snowfall days in December: 10.8 days
The months with the highest number of snowfall days are January and December (10.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Jerome, ID
- Average daylight in December: 9h and 1min
The month with the longest days is June (Average daylight: 15h and 18min).
The month with the shortest days is December (Average daylight: 9h and 6min).
- Average sunshine in December: 5h and 4min
The month with the most sunshine is July (Average sunshine: 12h and 0min).
The month with the least sunshine is December (Average sunshine: 5h and 42min).
Average sunshine days in December
Jerome, ID
- Average sunshine days in December: 17.3 days
The month with the most sunshine days is July (25.2 days).
The month with the least sunshine days is March (15.2 days).
Average UV index in December
Jerome, 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
Jerome, 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 9).
Average visibility in December
Jerome, 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).
Jerome, Idaho, USA
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