As of 22:41 MDT

Boise, ID weather in December

80°

Boise, Saturday, 8 August, 22:41

Clear. Feels like 80°. High 98°, low 62°.

Pressure29.80 inHg

Wind3.1 mph W

Humidity35%

Visibility6.2 mi

Dew point50°

See detailed hourly forecast

In December, Boise, ID averages a high of 38.4° and a low of 24.4°. About 2.0 inches of precipitation fall over the month (11 wet days). The record high is 61.9° (2025) and the record low -28.3° (1990). Normals are computed over the last 60 years.

Day	High	Low	Chance of precip.	Record high	Record low
1	41.5°	27.1°	47%	54.9° (2008)	6.3° (1985)
2	42.1°	28.4°	38%	52.3° (2003)	5.5° (1984)
3	42.1°	28°	30%	58.3° (1987)	12.4° (1984)
4	42.1°	27.1°	38%	56.5° (1987)	1.4° (1984)
5	40.5°	25.9°	28%	56.3° (1987)	0.9° (1984)
6	40.5°	26.6°	43%	57.9° (1987)	2.3° (1992)
7	39.7°	26.4°	40%	54.7° (2014)	7° (1984)
8	39°	24.6°	32%	56.8° (1981)	-1.8° (1972)
9	39°	25.2°	28%	55.6° (1981)	-17.3° (1972)
10	40.1°	26.6°	25%	61.9° (2025)	-18.2° (1972)
11	39.4°	25°	32%	59.4° (2025)	-17.1° (1972)
12	39.7°	26.2°	40%	58.6° (2014)	-5.8° (1972)
13	39.4°	25.9°	43%	52.9° (1969)	-11.4° (1972)
14	39°	24.8°	32%	53.1° (2002)	-7.4° (1967)
15	38.7°	25.2°	23%	52.5° (2002)	-5.1° (1972)
16	38.8°	25°	32%	56.5° (2025)	5.4° (1964)
17	38.3°	24.6°	28%	51.8° (1979)	-14.4° (1964)
18	37.6°	23.2°	28%	53.2° (1979)	2.1° (1964)
19	37.4°	23.4°	28%	52.3° (2025)	-0.8° (1984)
20	37.6°	23.2°	30%	51.3° (2019)	-4.7° (1990)
21	37.4°	24.8°	40%	55.9° (2020)	-14.1° (1990)
22	37°	22.8°	35%	57.9° (2019)	-28.3° (1990)
23	36.5°	22.5°	38%	60.6° (2025)	-18.2° (1990)
24	36.9°	23.2°	42%	60.1° (2025)	-13.4° (1990)
25	36.5°	22.3°	32%	59° (2025)	-13° (1990)
26	36°	22.5°	35%	54° (1980)	-4.4° (1990)
27	36.5°	22.8°	30%	53.2° (1980)	-2.4° (1988)
28	36°	22.6°	30%	49.6° (2004)	-2° (1983)
29	36°	20.7°	38%	51.1° (1980)	-15° (1990)
30	34.9°	21.6°	38%	50.5° (1980)	-20.2° (1990)
31	34.2°	19.8°	33%	48.6° (1996)	-3.3° (2014)