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Boise Weather in 2009

Historical record of Boise, Idaho weather for the year 2009 based on NOAA data.
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2009 Boise Weather Extremes
Highest temperature 106 °F July 18
Lowest temperature -6 °F December 8
Highest daily low 72 °F July 23
Lowest daily high 16 °F December 9
Most daily precipitation 0.9 inches August 6
Most daily snow 3.2 inches December 30
Total annual precipitation 11.3 inches -
Total annual snow 24.0 inches -
January 2009 Boise Weather
Day High (°F) Low (°F) Precip. (inches) Snow (inches)
49 32 0.09 0.0
55 26 0.00 0.0
32 20 0.00 0.0
29 16 0.00 0.0
30 22 0.19 3.0
46 24 0.28 2.2
49 37 0.00 0.0
48 37 0.00 0.0
40 29 0.00 0.0
40 27 0.00 0.0
47 32 0.00 0.0
45 33 0.00 0.0
39 29 0.00 0.0
32 28 0.00 0.0
30 26 0.00 0.0
31 27 0.00 0.0
31 28 0.00 0.0
31 26 0.00 0.0
30 26 0.00 0.0
33 24 0.00 0.0
29 25 0.00 0.0
33 28 0.06 0.3
36 29 0.03 0.4
38 33 0.10 0.4
35 21 0.12 1.3
27 13 0.00 0.0
27 10 0.00 0.0
38 23 0.00 0.0
42 20 0.00 0.0
37 26 0.00 0.0
33 20 0.00 0.0
February 2009 Boise Weather
Day High (°F) Low (°F) Precip. (inches) Snow (inches)
36 21 0.00 0.0
40 22 0.00 0.0
42 22 0.00 0.0
47 26 0.00 0.0
40 29 0.01 0.0
52 32 0.01 0.0
44 31 0.00 0.0
41 28 0.00 0.0
35 28 0.01 0.1
35 22 0.00 0.0
40 26 0.04 0.9
37 25 0.00 0.0
42 27 0.00 0.0
41 29 0.00 0.0
44 28 0.00 0.0
49 28 0.00 0.0
49 31 0.00 0.0
50 29 0.00 0.0
52 28 0.00 0.0
50 27 0.00 0.0
52 29 0.00 0.0
50 32 0.03 0.0
59 39 0.01 0.0
59 43 0.00 0.0
52 38 0.00 0.0
46 27 0.09 0.0
41 20 0.00 0.0
49 26 0.00 0.0
March 2009 Boise Weather
Day High (°F) Low (°F) Precip. (inches) Snow (inches)
49 31 0.00 0.0
68 39 0.04 0.0
55 41 0.07 0.0
45 36 0.19 0.0
41 33 0.13 1.3
40 26 0.09 0.9
41 20 0.00 0.0
39 28 0.04 0.6
38 21 0.00 0.0
37 25 0.00 0.0
42 21 0.00 0.0
45 21 0.00 0.0
53 28 0.00 0.0
57 28 0.00 0.0
54 42 0.02 0.0
65 44 0.06 0.0
54 39 0.00 0.0
60 34 0.00 0.0
61 40 0.00 0.0
72 38 0.00 0.0
65 43 0.25 0.0
52 38 0.04 0.0
50 30 0.00 0.0
52 33 0.00 0.0
44 35 0.16 0.0
48 28 0.00 0.0
52 27 0.00 0.0
59 36 0.00 0.0
51 33 0.08 0.0
50 28 0.00 0.0
48 29 0.09 0.0
April 2009 Boise Weather
Day High (°F) Low (°F) Precip. (inches) Snow (inches)
46 29 0.00 0.0
53 36 0.15 0.0
48 34 0.01 0.1
56 30 0.00 0.0
62 32 0.00 0.0
68 37 0.00 0.0
76 41 0.00 0.0
60 46 0.45 0.0
59 40 0.00 0.0
54 45 0.02 0.0
60 43 0.00 0.0
64 35 0.00 0.0
61 42 0.04 0.0
51 35 0.00 0.0
55 40 0.00 0.0
62 38 0.00 0.0
66 37 0.00 0.0
65 40 0.00 0.0
75 42 0.00 0.0
83 46 0.00 0.0
86 51 0.00 0.0
81 54 0.00 0.0
60 42 0.00 0.0
57 37 0.00 0.0
60 30 0.00 0.0
60 36 0.00 0.0
65 38 0.00 0.0
56 39 0.04 0.0
57 36 0.00 0.0
58 39 0.01 0.0
May 2009 Boise Weather
Day High (°F) Low (°F) Precip. (inches) Snow (inches)
61 40 0.00 0.0
61 47 0.63 0.0
61 42 0.20 0.0
61 38 0.05 0.0
68 50 0.02 0.0
67 47 0.02 0.0
60 44 0.00 0.0
61 33 0.00 0.0
67 38 0.00 0.0
72 41 0.00 0.0
73 48 0.00 0.0
59 41 0.00 0.0
61 31 0.00 0.0
69 50 0.06 0.0
69 41 0.00 0.0
79 45 0.00 0.0
91 51 0.00 0.0
95 59 0.00 0.0
81 56 0.00 0.0
68 45 0.00 0.0
78 42 0.00 0.0
84 50 0.00 0.0
83 52 0.00 0.0
80 59 0.00 0.0
81 53 0.00 0.0
84 54 0.00 0.0
84 52 0.00 0.0
91 59 0.00 0.0
94 62 0.00 0.0
90 64 0.00 0.0
88 64 0.00 0.0
June 2009 Boise Weather
Day High (°F) Low (°F) Precip. (inches) Snow (inches)
82 64 0.00 0.0
70 60 0.19 0.0
85 60 0.00 0.0
91 59 0.00 0.0
75 55 0.01 0.0
72 54 0.32 0.0
72 51 0.08 0.0
74 52 0.01 0.0
78 54 0.00 0.0
72 61 0.00 0.0
73 58 0.00 0.0
77 58 0.00 0.0
74 58 0.26 0.0
71 56 0.06 0.0
72 56 0.56 0.0
81 54 0.00 0.0
77 61 0.03 0.0
78 54 0.00 0.0
80 57 0.00 0.0
74 54 0.00 0.0
66 51 0.00 0.0
69 45 0.00 0.0
81 50 0.00 0.0
96 58 0.00 0.0
89 64 0.00 0.0
83 57 0.02 0.0
83 49 0.00 0.0
96 60 0.00 0.0
94 61 0.00 0.0
91 61 0.00 0.0
July 2009 Boise Weather
Day High (°F) Low (°F) Precip. (inches) Snow (inches)
92 57 0.00 0.0
93 62 0.00 0.0
95 64 0.00 0.0
93 68 0.00 0.0
98 70 0.00 0.0
86 63 0.00 0.0
83 54 0.00 0.0
78 60 0.00 0.0
82 54 0.00 0.0
92 58 0.00 0.0
93 65 0.00 0.0
90 67 0.04 0.0
77 60 0.00 0.0
86 56 0.00 0.0
95 62 0.00 0.0
100 65 0.00 0.0
101 66 0.00 0.0
106 68 0.00 0.0
96 72 0.00 0.0
94 58 0.00 0.0
99 65 0.00 0.0
105 68 0.00 0.0
96 72 0.00 0.0
96 65 0.00 0.0
98 64 0.00 0.0
96 67 0.00 0.0
91 65 0.00 0.0
94 67 0.00 0.0
93 68 0.00 0.0
93 64 0.00 0.0
97 66 0.00 0.0
August 2009 Boise Weather
Day High (°F) Low (°F) Precip. (inches) Snow (inches)
100 70 0.00 0.0
101 70 0.01 0.0
98 70 0.00 0.0
98 69 0.00 0.0
95 68 0.01 0.0
75 59 0.91 0.0
60 53 0.56 0.0
73 52 0.26 0.0
83 58 0.00 0.0
91 65 0.00 0.0
97 66 0.00 0.0
92 63 0.00 0.0
82 61 0.00 0.0
74 57 0.00 0.0
73 48 0.00 0.0
79 51 0.00 0.0
81 53 0.00 0.0
85 56 0.00 0.0
92 61 0.00 0.0
99 68 0.00 0.0
97 67 0.00 0.0
94 62 0.00 0.0
82 68 0.00 0.0
89 58 0.00 0.0
94 68 0.00 0.0
96 63 0.00 0.0
101 62 0.00 0.0
102 69 0.00 0.0
88 66 0.04 0.0
81 56 0.00 0.0
88 62 0.00 0.0
September 2009 Boise Weather
Day High (°F) Low (°F) Precip. (inches) Snow (inches)
95 66 0.00 0.0
95 66 0.00 0.0
95 68 0.00 0.0
91 56 0.00 0.0
92 66 0.00 0.0
78 60 0.00 0.0
72 48 0.00 0.0
77 46 0.00 0.0
86 54 0.00 0.0
90 56 0.00 0.0
89 57 0.00 0.0
91 62 0.00 0.0
92 63 0.00 0.0
83 66 0.01 0.0
84 58 0.00 0.0
92 65 0.00 0.0
85 61 0.00 0.0
88 54 0.00 0.0
89 62 0.00 0.0
70 51 0.00 0.0
73 43 0.00 0.0
83 50 0.00 0.0
88 56 0.00 0.0
89 57 0.00 0.0
91 56 0.00 0.0
87 57 0.00 0.0
80 49 0.00 0.0
83 55 0.00 0.0
72 50 0.00 0.0
56 40 0.00 0.0
October 2009 Boise Weather
Day High (°F) Low (°F) Precip. (inches) Snow (inches)
57 32 0.00 0.0
63 39 0.00 0.0
52 41 0.07 0.0
45 40 0.40 0.0
49 39 0.17 0.0
55 36 0.00 0.0
58 36 0.00 0.0
61 35 0.00 0.0
59 36 0.00 0.0
46 31 0.00 0.0
49 31 0.00 0.0
60 33 0.00 0.0
65 41 0.13 0.0
69 52 0.18 0.0
66 50 0.03 0.0
71 45 0.00 0.0
78 48 0.00 0.0
71 49 0.09 0.0
60 46 0.09 0.0
61 40 0.00 0.0
57 43 0.00 0.0
61 44 0.00 0.0
65 47 0.07 0.0
55 38 0.00 0.0
55 30 0.00 0.0
63 40 0.06 0.0
47 33 0.00 0.0
47 30 0.00 0.0
39 25 0.06 0.0
56 36 0.04 0.0
62 37 0.00 0.0
November 2009 Boise Weather
Day High (°F) Low (°F) Precip. (inches) Snow (inches)
55 37 0.00 0.0
57 31 0.00 0.0
53 32 0.00 0.0
61 37 0.00 0.0
59 36 0.00 0.0
59 43 0.08 0.0
53 40 0.00 0.0
54 34 0.00 0.0
60 34 0.00 0.0
60 42 0.00 0.0
52 42 0.10 0.0
44 34 0.22 0.0
42 31 0.05 0.5
38 27 0.03 0.3
43 24 0.00 0.0
51 27 0.00 0.0
64 39 0.00 0.0
48 31 0.01 0.0
54 31 0.00 0.0
59 39 0.00 0.0
46 30 0.00 0.0
45 34 0.09 0.9
43 25 0.00 0.0
43 30 0.00 0.0
46 27 0.00 0.0
45 27 0.00 0.0
39 30 0.13 0.0
46 28 0.00 0.0
44 25 0.00 0.0
46 27 0.00 0.0
December 2009 Boise Weather
Day High (°F) Low (°F) Precip. (inches) Snow (inches)
44 24 0.00 0.0
37 21 0.00 0.0
35 18 0.00 0.0
40 18 0.00 0.0
35 18 0.00 0.0
29 20 0.03 0.3
22 0 0.08 3.0
16 -6 0.00 0.0
16 -4 0.00 0.0
19 0 0.00 0.0
19 1 0.00 0.0
24 16 0.09 1.3
33 20 0.03 0.5
38 19 0.00 0.0
39 35 0.82 0.0
45 35 0.18 0.0
46 32 0.00 0.0
45 32 0.01 0.0
37 29 0.01 0.0
43 30 0.01 0.0
48 34 0.00 0.0
38 27 0.16 1.0
33 22 0.00 0.0
33 17 0.00 0.0
29 18 0.00 0.0
27 19 0.00 0.0
29 18 0.00 0.0
31 24 0.00 0.0
34 23 0.00 0.0
36 29 0.17 3.2
38 30 0.16 1.4
Weather Station Details
Years Station Coordinates
1940–2022 location