Weather Averages for San Francisco, CA

Weather Averages for
San Francisco, CA

Latitude: 37°46'N, Longitude: 122°26'W, Elevation: 39.0 m, Distance: 0.63 km

	Unit	Year	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Average temperature over 72 years	°C	13	10	12	12	13	14	15	15	16	17	16	14	11
Average high temperature over 72 years	°C	17	13	15	16	17	17	18	18	18	21	20	17	13
Average low temperature over 72 years	°C	10	7	8	9	10	10	11	12	12	13	12	10	8
Highest recorded temperature over 72 years	°C	39	26	27	28	34	35	38	39	35	38	38	30	24
Lowest recorded temperature over 72 years	°C	-2	-1	0	1	4	6	8	8	8	8	6	3	-2
Average number of rainy days over 57 years	days	67	11	10	11	6	3	1	-	1	2	4	8	10
Average number of days above 27°C over 72 years	days	2	-	-	-	-	-	-	-	-	1	-	-	-
Average precipitation over 63 years	cm	51.8	10.4	8.9	7.4	3.8	1.3	0.5	-	-	0.5	2.8	6.6	9.9
Most recorded rainfall over 63 years	cm	111.3	27.2	25.7	22.9	14.0	10.2	3.6	0.5	1.3	5.3	14.0	20.8	29.2
Least recorded rainfall over 63 years	cm	25.4	1.3	-	-	-	-	-	-	-	-	-	-	-
Average number of days with thunderstorms over 7 years	days	5	-	1	-	1	-	-	1	1	-	1	-	-
Average number of days with fog over 7 years	days	1	-	1	-	-	-	-	-	-	-	-	-	-
Average morning relative humidity over 7 years	%	85	81	83	81	82	89	89	92	93	87	81	82	80
Average evening relative humidity over 7 years	%	66	63	63	61	61	68	72	74	73	66	60	63	63
Average wind speed over 28 years	km/h	14.0	10.8	12.1	13.7	15.3	16.7	17.5	18.0	16.9	14.6	12.2	10.1	10.5
Heating degree days over 30 years	days	3005	431	297	313	275	260	198	187	156	116	123	237	412
Cooling degree days over 30 years	days	65	-	-	-	-	-	-	-	-	35	30	-	-
Average possibility of sunshine over 38 years	%	66	56	62	69	73	72	73	66	65	72	70	62	53
Average number of days below 4.5°C over 72 years	days	41	15	7	4	2	-	-	-	-	-	-	1	11
Average number of days above 19.5°C over 72 years	days	29	-	-	1	2	3	3	2	2	6	7	2	-

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

Weather Averages San Francisco, CA