Weather data for Boise
Month Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Year
Record high °F (°C)
63
(17)
71
(22)
81
(27)
92
(33)
99
(37)
109
(43)
111
(44)
110
(43)
102
(39)
94
(34)
78
(26)
65
(18)
111
(44)
Average high °F (°C)
37
(3)
45
(7)
54
(12)
62
(17)
71
(22)
80
(27)
89
(32)
88
(31)
77
(25)
64
(18)
48
(9)
37
(3)
62.7
(17)
Average low °F (°C)
24
(-4)
29
(-2)
34
(1)
39
(4)
47
(8)
54
(12)
60
(16)
60
(16)
51
(11)
41
(5)
32
(0)
24
(-4)
41.3
(5)
Record low °F (°C)
-17
(-27)
-15
(-26)
6
(-14)
19
(-7)
22
(-6)
31
(-1)
35
(2)
34
(1)
23
(-5)
11
(-12)
-3
(-19)
-25
(-32)
-25
(-32)
Precipitation inches (mm)
1.39
(35.3)
1.14
(29)
1.41
(35.8)
1.27
(32.3)
1.27
(32.3)
0.74
(18.8)
0.39
(9.9)
0.30
(7.6)
0.76
(19.3)
0.76
(19.3)
1.38
(35.1)
1.38
(35.1)
12.19
(309.6)
Snowfall inches (mm)
6.8
(172.7)
3.6
(91.4)
1.7
(43.2)
0.6
(15.2)
0.1
(2.5)
0
(0)
0
(0)
0
(0)
0
(0)
0.1
(2.5)
2.2
(55.9)
5.8
(147.3)
20.9
(530.9)
Source: Weather Channel [6] September 24, 2009
Source #2: Weatherbase.com [7] September 24, 2009