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
Firth experiences its lowest temperatures in December, with an average peak of 27.9°F (-2.3°C) and a low of 16°F (-8.9°C).Humidity
In December, the average relative humidity in Firth is 86%.Rainfall
In Firth, during December, the rain falls for 8 days and regularly aggregates up to 0.91" (23mm) of precipitation. Throughout the year, there are 124.6 rainfall days, and 12.24" (311mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through May, September through December. In December, in Firth, it is snowing for 16.7 days. Throughout December, 6.5" (165mm) of snow is accumulated. Throughout the year, in Firth, there are 75.1 snowfall days, and 30.59" (777mm) of snow is accumulated.Daylight
The month with the shortest days is December, with an average of 9h and 0min of daylight.On the first day of the month, sunrise is at 7:41 am and sunset at 4:54 pm. On the last day of December, in Firth, sunrise is at 8:00 am and sunset at 5:03 pm MST.
Sunshine
In Firth, the average sunshine in December is 5.1h.UV index
January and December, with an average maximum UV index of 1, are months with the lowest UV index in Firth. A UV Index value of 2, and less, symbolizes a low health risk from exposure to the Sun's UV radiation for the ordinary person.Note: The average daily UV index of 1 in December transforms into the following instructions:
Children must always have sun protection, unlike most people, who can tolerate up to an hour in the sun without any burns. Exposing oneself to the midday Sun can be harmful due to the strong UV radiation; limit your time outside. Limit sun-induced ocular harm with sunglasses that feature UVA and UVB filtration. Be aware! The intensity of the Sun's UV radiation can be amplified nearly twice due to snow reflection.
Frequently asked questions
What time of the year is the coldest in Firth?
How cold is it in Firth in December?
What is the average humidity in December in Firth?
How much does it rain in Firth in December?
How many days does it snow in December in Firth?
What is the month with the shortest days in Firth?
What is the average length of the day in December in Firth?
When is the sunrise / sunset in December in Firth?
How long on average sun shines in December in Firth?
When is the lowest UV index in Firth?
What is the UV index reading in December in Firth?
Average temperature in December
Firth, ID
- Average high temperature in December: 27.9°F
The warmest month (with the highest average high temperature) is July (85.3°F).
The month with the lowest average high temperature is December (27.9°F).
- Average low temperature in December: 16°F
The month with the highest average low temperature is August (55°F).
The coldest month (with the lowest average low temperature) is January (14.7°F).
Average pressure in December
Firth, ID
- Average pressure in December: 30.26"Hg
The month with the highest atmospheric pressure is January (30.3"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed in December
Firth, ID
- Average wind speed in December: 6.2mph
The windiest month (with the highest average wind speed) is April (8.9mph).
The calmest month (with the lowest average wind speed) is January (6mph).
Average humidity in December
Firth, ID
- Average humidity in December: 86%
The month with the highest relative humidity is January (90%).
The months with the lowest relative humidity are July and August (36%).
Average rainfall in December
Firth, ID
- Average rainfall in December: 0.91"
The wettest month (with the highest rainfall) is May (1.57").
The driest month (with the least rainfall) is July (0.51").
Average rainfall days in December
Firth, ID
- Average rainfall days in December: 8 days
The month with the highest number of rainy days is May (15.9 days).
The month with the least rainy days is January (6.1 days).
Average snowfall in December
Firth, ID
- Average snowfall in December: 6.5"
The month with the highest snowfall is January (7.44").
The months with the least snowfall are June, July and August (0").
Average snowfall days in December
Firth, ID
- Average snowfall days in December: 16.7 days
The month with the highest number of snowfall days is December (16.7 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in December /
Average sunshine in December
Firth, ID
- Average daylight in December: 9h and 0min
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 0min).
- Average sunshine in December: 5h and 1min
The month with the most sunshine is July (Average sunshine: 11h and 54min).
The month with the least sunshine is January (Average sunshine: 4h and 48min).
Average sunshine days in December
Firth, ID
- Average sunshine days in December: 13 days
The month with the most sunshine days is October (18.9 days).
The month with the least sunshine days is March (10 days).
Average UV index in December
Firth, 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 and December (UV index 1).
Average cloud cover in December
Firth, ID
- Average cloud cover in December: 49
The month with the most cloud cover is February (Cloud cover 51).
The months with the least cloud cover are July and August (Cloud cover 11).
Average visibility in December
Firth, ID
- Average visibility in December: 5mi
The months with the highest visibility are March, April, May, June, July, August, September, October and November (6mi).
The months with the lowest visibility are January and February (4mi).
Firth, Idaho, USA
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