Klamath Falls, Oregon - Climate

Climate

Klamath Falls features a climate with chilly winters along with hot summer afternoons and cool summer nights. Under the Köppen climate classification the city's climate type is Csb, often described as Warm Summer Mediterranean. Using the 0 °C (32 °F) isotherm preferred by some climatologists Klamath Falls is a Dsb climate, often described as Warm Summer Continental Mediterranean. Typical of its region, Klamath Falls has a dry season in summertime, with the greatest precipitation occurring in wintertime, much of it falling as snow. Although it is not arid or semi-arid, total precipitation is still low, at 13.41 inches (340.6 mm) per year, due to Klamath Falls being in the rain shadow of the Cascade Mountains to the west. The all-time record high is 105 °F (40.6 °C), set on July 27, 1911, and the all-time record low is −24 °F (−31.1 °C), set on January 15, 1888. The freeze-free season averages around 120 days, with the first freeze in a typical year being on September 21, and the last freeze being on June 1. On average 21 days per year reach 90 °F (32 °C) or higher, and 2 days per year reach temperatures of 0 °F (−18 °C) or lower.

Climate data for Klamath Falls, Oregon
Month Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Year
Average high °F (°C) 38
(3)
44
(7)
51
(11)
59
(15)
67
(19)
76
(24)
85
(29)
84
(29)
76
(24)
64
(18)
48
(9)
39
(4)
60.9
(16.1)
Daily mean °F (°C) 29
(−2)
35
(2)
39
(4)
46
(8)
53
(12)
61
(16)
68
(20)
67
(19)
59
(15)
49
(9)
38
(3)
31
(−1)
47.9
(8.8)
Average low °F (°C) 21
(−6)
25
(−4)
28
(−2)
33
(1)
39
(4)
45
(7)
51
(11)
50
(10)
43
(6)
35
(2)
28
(−2)
23
(−5)
35.1
(1.7)
Precipitation inches (mm) 1.99
(50.5)
1.39
(35.3)
1.27
(32.3)
0.81
(20.6)
0.98
(24.9)
0.77
(19.6)
0.29
(7.4)
0.40
(10.2)
0.55
(14)
1.03
(26.2)
1.83
(46.5)
2.10
(53.3)
13.41
(340.6)
Snowfall inches (cm) 12.1
(30.7)
6.0
(15.2)
3.8
(9.7)
1.2
(3)
0.2
(0.5)
0.0
(0)
0.0
(0)
0.0
(0)
0.0
(0)
0.3
(0.8)
3.8
(9.7)
9.1
(23.1)
36.5
(92.7)
Avg. precipitation days (≥ 0.01 in) 11 9 9 7 7 5 2 2 3 6 9 11 81
Source: Western Regional Climate Center

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