According to the Köppen climate classification system, Palomar Mountain has a warm-summer Mediterranean climate, abbreviated "Csa" on climate maps. Annual precipitation on the mountain averages about 30 inches (highly variable from year to year), mostly falling between October and March. Snow falls during cold winter storms. Summers are mostly dry, except for occasional thunderstorms in late July to early September. The humid climate supports woods of oak, pine, fir and cedar on large swaths of the mountain.
More information Climate data for Palomar Mountain, California, 1991–2020 normals, extremes 1938–present, Month ...
| Climate data for Palomar Mountain, California, 1991–2020 normals, extremes 1938–present |
| Month |
Jan |
Feb |
Mar |
Apr |
May |
Jun |
Jul |
Aug |
Sep |
Oct |
Nov |
Dec |
Year |
| Record high °F (°C) |
82
(28) |
77
(25) |
82
(28) |
83
(28) |
91
(33) |
104
(40) |
100
(38) |
100
(38) |
100
(38) |
97
(36) |
80
(27) |
80
(27) |
104
(40) |
| Mean maximum °F (°C) |
63.4
(17.4) |
63.9
(17.7) |
69.5
(20.8) |
76.1
(24.5) |
82.0
(27.8) |
88.7
(31.5) |
92.9
(33.8) |
92.0
(33.3) |
88.3
(31.3) |
81.0
(27.2) |
71.5
(21.9) |
64.8
(18.2) |
94.3
(34.6) |
| Mean daily maximum °F (°C) |
51.4
(10.8) |
51.0
(10.6) |
56.0
(13.3) |
61.3
(16.3) |
69.3
(20.7) |
78.5
(25.8) |
84.3
(29.1) |
84.4
(29.1) |
79.3
(26.3) |
69.1
(20.6) |
58.2
(14.6) |
50.7
(10.4) |
66.1
(19.0) |
| Daily mean °F (°C) |
44.2
(6.8) |
43.6
(6.4) |
47.3
(8.5) |
51.5
(10.8) |
58.8
(14.9) |
67.8
(19.9) |
74.1
(23.4) |
74.5
(23.6) |
69.4
(20.8) |
59.9
(15.5) |
50.3
(10.2) |
43.7
(6.5) |
57.1
(13.9) |
| Mean daily minimum °F (°C) |
35.1
(1.7) |
35.2
(1.8) |
37.8
(3.2) |
41.8
(5.4) |
48.4
(9.1) |
57.0
(13.9) |
62.7
(17.1) |
63.0
(17.2) |
57.9
(14.4) |
49.5
(9.7) |
42.5
(5.8) |
36.6
(2.6) |
47.3
(8.5) |
| Mean minimum °F (°C) |
24.4
(−4.2) |
24.0
(−4.4) |
25.4
(−3.7) |
28.1
(−2.2) |
33.4
(0.8) |
41.2
(5.1) |
55.3
(12.9) |
55.1
(12.8) |
45.5
(7.5) |
36.8
(2.7) |
29.0
(−1.7) |
23.9
(−4.5) |
19.8
(−6.8) |
| Record low °F (°C) |
8
(−13) |
12
(−11) |
16
(−9) |
19
(−7) |
24
(−4) |
28
(−2) |
36
(2) |
36
(2) |
30
(−1) |
18
(−8) |
17
(−8) |
8
(−13) |
8
(−13) |
| Average precipitation inches (mm) |
5.93
(151) |
7.34
(186) |
4.61
(117) |
2.00
(51) |
0.89
(23) |
0.17
(4.3) |
0.29
(7.4) |
0.68
(17) |
0.48
(12) |
1.21
(31) |
2.25
(57) |
4.56
(116) |
30.41
(772.7) |
| Average snowfall inches (cm) |
6.9
(18) |
7.5
(19) |
9.4
(24) |
3.9
(9.9) |
0.0
(0.0) |
0.0
(0.0) |
0.0
(0.0) |
0.0
(0.0) |
0.0
(0.0) |
0.0
(0.0) |
1.7
(4.3) |
5.3
(13) |
34.7
(88.2) |
| Average precipitation days (≥ 0.01 in) |
6.8 |
7.5 |
6.1 |
3.8 |
2.1 |
0.4 |
1.1 |
1.3 |
1.3 |
2.2 |
3.4 |
6.0 |
42.0 |
| Average snowy days (≥ 0.1 in) |
1.0 |
2.1 |
1.0 |
1.0 |
0.1 |
0.0 |
0.0 |
0.0 |
0.0 |
0.0 |
0.3 |
1.5 |
7.0 |
| Source 1: NOAA[4] |
| Source 2: National Weather Service[5] |
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