Weather



Climate

Sierra Vista falls in the BSk (Cold, Semi-arid) region of the Köppen climate classification system. The city has a fairly stable climate with very little humidity. However, the North American Monsoon can bring torrential rain during the months of July and August and will produce almost half the yearly rainfall in just those two months alone. Due to the dry climate the rest of the year and the city’s high elevation, daily low temperatures range 20 to 30 degrees F (-1.1 to -6.7 degrees C) on average and up to 50 degrees F (27.8 degrees C) on rare occasions. Snow is not a common sight on the streets of Sierra Vista though some years the city can receive several inches of snow and other years it will receive none. However, a snow capped Miller Peakand Carr Peak in the Huachuca Mountains is a common sight for 4 – 5 months every year.

  • The highest recorded temperature was 108 °F (42 °C) in 1989.
  • The lowest recorded temperature was 3 °F (−16 °C) in 2011.
  • The maximum average precipitation occurs in August.
Climate data for Sierra Vista, Arizona
Month Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Year
Record high °F (°C) 81
(27)
84
(29)
91
(33)
97
(36)
102
(39)
107
(42)
108
(42)
102
(39)
98
(37)
96
(36)
85
(29)
79
(26)
108
(42)
Average high °F (°C) 61.1
(16.2)
65.4
(18.6)
69.5
(20.8)
76.9
(24.9)
85.2
(29.6)
93.0
(33.9)
91.8
(33.2)
88.9
(31.6)
86.9
(30.5)
79.1
(26.2)
68.9
(20.5)
61.3
(16.3)
77.2
(25.1)
Average low °F (°C) 33.5
(0.8)
36.5
(2.5)
40.9
(4.9)
46.7
(8.2)
54.7
(12.6)
63.0
(17.2)
66.1
(18.9)
64.7
(18.2)
60.2
(15.7)
50.7
(10.4)
40.1
(4.5)
33.4
(0.8)
49.2
(9.6)
Record low °F (°C) 12
(−11)
11
(−12)
23
(−5)
28
(−2)
38
(3)
46
(8)
51
(11)
53
(12)
45
(7)
30
(−1)
19
(−7)
15
(−9)
11
(−12)
Precipitation inches (mm) 1.02
(25.9)
0.60
(15.2)
0.46
(11.7)
0.41
(10.4)
0.27
(6.9)
0.53
(13.5)
3.12
(79.2)
3.98
(101.1)
1.39
(35.3)
0.96
(24.4)
0.44
(11.2)
0.91
(23.1)
14.09
(357.9)
Snowfall inches (cm) 0.3
(0.8)
0.1
(0.3)
0.2
(0.5)
0.0
(0)
0.0
(0)
0.0
(0)
0.0
(0)
0.0
(0)
0.0
(0)
0.0
(0)
0.0
(0)
0.1
(0.3)
0.7
(1.8)
Source: National Weather Service
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