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Climate Lab — San Francisco, United States

Climate Lab·

Monthly climate metrics across temperature, precipitation, wind, and UV.

MetricJanFebMarAprMayJunJulAugSepOctNovDecYear
Temperature
Daily high°C
14
15
15
16
18
19
19
20
20
21
16
14
17
Daily mean°C
11
12
12
13
14
16
16
17
17
17
13
11
14
Daily low°C
9
9
9
10
11
13
13
14
14
13
10
8
11
Thermal comfort
High feels°C
19
20
21
23
24
26
26
27
28
29
22
19
24
Mean feels°C
9
10
10
14
16
20
21
22
21
19
11
9
15
Low feels°C
1
0
1
2
5
9
10
11
10
8
2
1
5
Humidity
Humidity%
83
75
75
72
73
74
78
79
78
76
74
84
77
Dewpoint°C
8.1
7.4
7.2
7.6
8.9
10.9
12.1
12.8
12.8
11.5
8.6
7.1
9.6
Precipitation
Rainfallmm
69
28
48
23
3
3
3
3
3
3
48
118
352
Rain days≥1mm
10
8
11
3
0
0
0
0
0
1
5
12
50
Wind
Wind avgm/s
3.2
3.2
4.2
4.7
4.7
4.8
4.2
3.9
3.4
2.9
2.8
2.8
3.7
Wind gustsm/s
8.1
8.9
7.4
8.1
7.4
7.7
6.4
6.4
5.9
5.7
6.3
6.8
7.1
Sun & UV
Sunshinehrs/day
7.2
8.6
9.3
10.8
11.9
12.4
10.9
10.2
10.2
9.3
8.1
6.6
9.6
Clear skyindex
43%
57%
50%
61%
63%
60%
64%
61%
62%
68%
59%
38%
57%
UV indexmax avg
1.8
3.1
4.2
6.9
8.3
8.8
9.0
7.7
6.3
4.6
2.6
1.8
5.4
Based on 2014–2024 hourly climate data · Updated Mar 2025
Confidence: High

How winter feel compares

Compared across United States

San Francisco: 3.3 °C. Typical range in United States: -12.9–-0.8 °C. Low anchor: Anchorage, -21.6 °C. High anchor: Kailua, 16.7 °C.

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