Weather in Idaho Falls: December
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Average day temperature: | 31.3°F |
| Average night temperature: | 23.2°F | |
 |
Number of sunny days: | 9 days |
| Day length: | 8.9 - 9.2 hours | |
 |
Number of rainy days: | 0 days |
| Precipitation totals: | 0.6 in. | |
| more information | ||
14 days
forecast
forecast
| Idaho Falls |
weather in
January
January
| Idaho Falls |
Air temperature in December, °F
Show year:
2025
2024
2023
The highest day temperature during December of 2025 was 55°F. At the same time the lowest night temperature was 10°F. Daily and nightly averages during December were 41.4°F and 30.2°F.
Sunny, partly cloudy and cloudy days
Mostly all days in December are cloudy but sunny and partly cloudy days are also possible.
Precipitation total in December, in.
Precipitation total value in Idaho Falls in December is 0.6 in. Other months of the year show relatively similar values.
Wind speed in December, mph
The average wind speed value in December is 7.1 mph It makes December one of the least windy months of the year.
Average sunny hours
This chart shows average number of hours during the day when sunlight can reach the ground. It depends on day length and cloudiness during the day. The average number of sunny hours in December is: 4.0.
Best time for vacation in Idaho Falls
Idaho Falls on a weather map
Places in USA:
Name
°F
24 Hours Forecast
Idaho Falls
Local time: 16:06
February 26, thursday
1800
50°F
NE
9 mph
9 mph
2100
39°F
N
7 mph
7 mph
February 27, friday
0000
34°F
N
9 mph
9 mph
0300
34°F
N
9 mph
9 mph
0600
30°F
NE
11 mph
11 mph
0900
32°F
NE
12 mph
12 mph
1200
36°F
NE
16 mph
16 mph
1500
43°F
NE
16 mph
16 mph
