Weather Averages for San Francisco Intnl Airport, CA

Weather Averages for
San Francisco Intnl Airport, CA

Latitude: 37°37'N, Longitude: 122°23'W, Elevation: 2.4 m, Distance: 0.54 km

	Unit	Year	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Average temperature over 50 years	°C	13	9	11	11	13	14	16	17	17	17	16	12	10
Average high temperature over 50 years	°C	18	13	15	16	17	18	21	21	22	22	21	17	13
Average low temperature over 50 years	°C	9	5	6	7	8	10	11	12	12	12	11	8	6
Highest recorded temperature over 50 years	°C	41	22	25	29	33	36	41	40	37	39	37	29	23
Lowest recorded temperature over 50 years	°C	-4	-3	-1	0	2	3	6	6	7	5	2	0	-4
Average number of rainy days over 66 years	days	62	11	10	10	6	3	1	-	-	1	4	7	10
Average number of days above 27°C over 50 years	days	4	-	-	-	-	-	1	1	-	1	-	-	-
Average precipitation over 50 years	cm	49.0	10.7	8.1	7.6	3.3	0.8	0.3	-	-	0.5	2.5	5.8	8.9
Average dew point over 43 years	°C	8	5	6	6	7	8	10	11	11	11	10	7	5
Average number of days above 17°C over 50 years	days	105	-	1	3	5	8	13	18	20	20	14	4	-
Most recorded rainfall over 50 years	cm	97.3	28.7	24.1	22.9	16.3	9.7	2.3	0.8	1.8	5.8	18.5	20.1	31.2
Least recorded rainfall over 50 years	cm	22.1	0.5	-	-	-	-	-	-	-	-	-	-	-
Average number of days with thunderstorms over 50 years	days	5	-	-	-	-	-	-	-	-	-	-	-	-
Average number of days with fog over 50 years	days	99	17	12	7	4	4	3	4	4	6	9	12	17
Average morning relative humidity over 43 years	%	82	87	86	82	79	78	77	81	83	82	83	85	86
Average evening relative humidity over 43 years	%	63	68	66	64	62	61	60	61	62	60	60	63	68
Average wind speed over 43 years	km/h	20.9	14.5	19.3	20.9	22.5	25.7	25.7	22.5	20.9	19.3	19.3	17.7	16.1
Average number of days below -1.5°C over 50 years	days	3	1	-	-	-	-	-	-	-	-	-	-	1
Average number of clear days over 66 years	days	160	8	8	9	11	14	16	21	19	18	15	11	10
Heating degree days over 30 years	days	3016	505	358	363	287	218	121	92	68	79	135	306	484
Cooling degree days over 30 years	days	145	-	-	-	5	-	16	21	28	64	11	-	-
Average number of cloudy days over 66 years	days	104	15	13	13	10	7	5	3	3	4	7	11	14
Average number of partly cloudy days over 66 years	days	101	8	7	9	9	10	9	7	9	8	9	8	7

Check weather averages for nearby locations (some locations might offer more data):

Latitude: 37°37'N, Longitude: 122°22'W, Elevation: 4.9 m, Distance: 0.85 km

Latitude: 37°46'N, Longitude: 122°26'W, Elevation: 39.0 m, Distance: 6.12 km

Latitude: 37°43'N, Longitude: 122°13'W, Elevation: 3.0 m, Distance: 6.87 km

Latitude: 37°47'N, Longitude: 122°19'W, Elevation: 4.0 m, Distance: 7.03 km

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Weather Averages San Francisco Intnl Airport, CA