Weather Averages for South San Francisco, CA

7-day Forecast / 10-day Forecast

Monday
	High: 52°F Low: 47°F
Sunny

Tuesday
	High: 56°F Low: 44°F
Sunny

Wednesday
	High: 54°F Low: 46°F
Sunny

Thursday
	High: 58°F Low: 46°F
Sunny

Friday
	High: 69°F Low: 48°F
Sunny

Latitude: 37°37'N, Longitude: 122°23'W, Elevation: 8.0 ft, Distance: 3.58 mi South San Francisco, CA Averages »

	Unit	Year	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Average temperature over 50 years	°F	57	48	51	53	55	57	60	62	62	64	60	55	50
Average high temperature over 50 years	°F	64	55	59	60	64	66	69	71	71	73	69	62	55
Average low temperature over 50 years	°F	48	42	44	46	46	50	51	53	53	53	51	46	43
Highest recorded temperature over 50 years	°F	105	71	77	84	91	96	105	105	100	102	98	84	75
Lowest recorded temperature over 50 years	°F	24	26	30	31	36	39	43	44	44	41	37	31	24
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 90°F over 50 years	days	4	-	-	-	-	-	1	1	-	1	-	-	-
Average precipitation over 50 years	in	19.3	4.2	3.2	3.0	1.3	0.3	0.1	-	-	0.2	1.0	2.3	3.5
Average dew point over 43 years	°F	46	42	44	44	44	46	50	51	53	51	50	46	42
Average number of days above 70°F over 50 years	days	105	-	1	3	5	8	13	18	20	20	14	4	-
Most recorded rainfall over 50 years	in	38.3	11.3	9.5	9.0	6.4	3.8	0.9	0.3	0.7	2.3	7.3	7.9	12.3
Least recorded rainfall over 50 years	in	8.7	0.2	-	-	-	-	-	-	-	-	-	-	-
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	mph	13.0	9.0	12.0	13.0	14.0	16.0	16.0	14.0	13.0	12.0	12.0	11.0	10.0
Average number of days below 32°F 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: 16.0 ft, Distance: 4.23 mi

Latitude: 37°46'N, Longitude: 122°26'W, Elevation: 128.0 ft, Distance: 7.64 mi

Latitude: 37°47'N, Longitude: 122°19'W, Elevation: 13.0 ft, Distance: 10.61 mi

Latitude: 37°43'N, Longitude: 122°13'W, Elevation: 10.0 ft, Distance: 12.17 mi

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