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
In Letha, December is the coldest month, with temperatures averaging a high of 34.9°F (1.6°C) and a low of 22.8°F (-5.1°C).Humidity
In Letha, the average relative humidity in December is 79%.Rainfall
In Letha, during December, the rain falls for 8.4 days and regularly aggregates up to 1.5" (38mm) of precipitation. Throughout the year, there are 91.7 rainfall days, and 10.28" (261mm) of precipitation is accumulated.Snowfall
January through April, November and December are months with snowfall in Letha. December is the month with the most snowfall in Letha. Snow falls for 7.5 days and accumulates 4.33" (110mm) of snow.Daylight
With an average of 9h and 0min of daylight, December has the shortest days of the year.On the first day of the month, sunrise is at 8:01 am and sunset at 5:10 pm. On the last day of December, in Letha, Idaho, sunrise is at 8:20 am and sunset at 5:19 pm MST.
Sunshine
With an average of 5.3h of sunshine, December has the least sunshine of the year in Letha.UV index
The months with the lowest UV index in Letha are January, February, November and December, with an average maximum UV index of 2. A UV Index value of 2, and less, symbolizes a minimal health vulnerability from exposure to the Sun's UV radiation for the average person.Note: An average maximum UV index of 2 in December leads to these recommendations:
Protection from prolonged sun exposure is necessary for babies, children, and individuals with sensitive skin. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. For minimizing sun-related eye damage, always choose sunglasses with UVA and UVB coverage. Be watchful! The reflection of snow can enhance the intensity of the Sun's UV radiation nearly double.
Frequently asked questions
What part of the year is the coldest in Letha?
How cold is it in Letha in December?
What is the average humidity in December in Letha?
How many days does it rain in December in Letha?
What is the snowiest month in Letha?
How many days does it snow in December in Letha?
What is the month with the shortest days in Letha?
What is the average length of the day in December in Letha?
What time are sunrise and sunset in December in Letha?
What is the month with the least sunshine in Letha?
How long on average sun shines in December in Letha?
When is the lowest UV index in Letha?
What is the UV index intensity in December in Letha?
Average temperature in December
Letha, ID
- Average high temperature in December: 34.9°F
The warmest month (with the highest average high temperature) is July (90°F).
The month with the lowest average high temperature is December (34.9°F).
- Average low temperature in December: 22.8°F
The month with the highest average low temperature is August (60.3°F).
The coldest month (with the lowest average low temperature) is December (22.8°F).
Average pressure in December
Letha, ID
- Average pressure in December: 30.21"Hg
The month with the highest atmospheric pressure is January (30.24"Hg).
The months with the lowest atmospheric pressure are June and August (29.91"Hg).
Average wind speed in December
Letha, ID
- Average wind speed in December: 4.7mph
The windiest month (with the highest average wind speed) is April (6.5mph).
The calmest month (with the lowest average wind speed) is January (4.2mph).
Average humidity in December
Letha, ID
- Average humidity in December: 79%
The month with the highest relative humidity is January (82%).
The months with the lowest relative humidity are July and August (31%).
Average rainfall in December
Letha, ID
- Average rainfall in December: 1.5"
The wettest month (with the highest rainfall) is March (1.54").
The driest month (with the least rainfall) is July (0.16").
Average rainfall days in December
Letha, ID
- Average rainfall days in December: 8.4 days
The month with the highest number of rainy days is March (13.7 days).
The month with the least rainy days is July (3.2 days).
Average snowfall in December
Letha, ID
- Average snowfall in December: 4.33"
The month with the highest snowfall is December (4.33").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in December
Letha, ID
- Average snowfall days in December: 7.5 days
The month with the highest number of snowfall days is December (7.5 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
Letha, 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 2min
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 18min).
Average sunshine days in December
Letha, ID
- Average sunshine days in December: 17.5 days
The month with the most sunshine days is July (25.3 days).
The month with the least sunshine days is March (15.3 days).
Average UV index in December
Letha, 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
Letha, ID
- Average cloud cover in December: 43
The month with the most cloud cover is December (Cloud cover 43).
The month with the least cloud cover is July (Cloud cover 8).
Average visibility in December
Letha, ID
- Average visibility in December: 5mi
The months with the highest visibility are February, March, April, May, June, July, August, September, October and November (6mi).
The months with the lowest visibility are January and December (5mi).
Letha, Idaho, USA
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