Weather in Boise, Idaho, United States in December
In an average December, Boise sees a daily high around 37°F and a low around 23°F, based on 1981–2026 of local climate records.
| Average high | 37°F |
|---|---|
| Typical high range | 28°F to 45°F |
| Average low | 23°F |
| Typical low range | 14°F to 32°F |
| Average daily precipitation | 0.10 in |
December records
The most extreme December on record for each metric, across 1981–2026. For rainfall, the wettest and driest are by total December accumulation.
High
Highest
60°F
2021-12-01
Lowest
-1°F
1990-12-29
Low
Highest
46°F
2014-12-11
Lowest
-15°F
1990-12-29
Feels-like
Highest
38°F
2014-12-11
Lowest
-38°F
1990-12-29
Humidity
Highest
7.6 g/m³
2025-12-16
Lowest
0.6 g/m³
1990-12-29
Wind
Highest
29 mph
2010-12-25
Lowest
2 mph
1999-12-28
Precip
Wettest
6.24 in
1996
Driest
0.21 in
1989
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