CLIMATE OF SAN FRANCISCO
NCDC Normals
(1981-2010)

TEMPERATURE
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Annual
Daily Max 57 60 62 63 64 66 67 68 70 69 63 57 63.9
Daily Average 51 54 55 56 58 60 60 62 63 62 57 52 57.3
Daily Minimum 46 48 49 49 51 53 54 55 55 54 50 46 50.7
Average Days > 80 deg 0 0.1 0.4 1.4 1.2 1.4 1.1 1.7 3.7 3.5 0.1 0 14.6
Average Days > 90 deg 0 0 0 0.2 0.2 0.2 0 0.2 0.7 0.5 0 0 2.0
Average Days < 32 deg 0 0 0 0 0 0 0 0 0 0 0 0.1 0.1
Average Days < 40 deg 1.8 0.9 0.2 0 0 0 0 0 0 0 0 1.9 4.8
RAINFALL
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Annual
Monthly Rainfall 4.50 4.46 3.26 1.46 0.70 0.16 0.00 0.06 0.21 1.12 3.16 4.56 23.65
Average Days ≥ .01" 11.7 11.1 11.0 6.5 3.8 1.5 0.3 1.0 1.7 3.9 8.9 11.6 73.0
Average Days ≥ .10" 8.5 7.7 7.0 3.7 2.1 0.4 0.0 0.2 0.8 2.1 5.4 8.0 45.9
Average Days ≥ .50" 3.0 3.1 2.3 0.9 0.3 0.1 0.0 0.0 0.1 0.8 2.1 3.1 15.8
Average Days ≥ 1.00" 1.1 1.2 0.4 0.2 0.1 0.0 0.0 0.0 0.0 0.2 0.7 1.1 5.0

 

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