Weather in Boise in December
In an average December, Boise sees a daily high around 40°F and a low around 27°F, based on 1980–2026 of local climate records.
| Average high | 40°F |
|---|---|
| Typical high range | 30°F to 49°F |
| Average low | 27°F |
| Typical low range | 15°F to 39°F |
| Average daily precipitation | 0.10 in |
December records
The most extreme December on record for each metric, across 1980–2026. For rainfall, the wettest and driest are by total December accumulation.
High
Highest
61°F
2025-12-10
Lowest
-8°F
1990-12-22
Low
Highest
55°F
2014-12-12
Lowest
-25°F
1990-12-22
Feels-like
Highest
55°F
2014-12-12
Lowest
-45°F
1990-12-22
Humidity
Highest
8.4 g/m³
2012-12-05
Lowest
0.4 g/m³
1990-12-22
Wind
Highest
25 mph
1982-12-01
Lowest
3 mph
2000-12-08
Gust
Highest
47 mph
2000-12-15
Lowest
6 mph
2023-12-16
Precip
Wettest
4.71 in
2005
Driest
0.22 in
1989
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