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Mexico · 1991–2020

Best time to visit
San Francisco.

August leads for comfortable weather in San Francisco: typically 24.6°C by day, 12.7°C at night, with 59 mm of rain. Based on measured 1991–2020 NOAA station history.

Best comfortAugust

Typical high24.6°C

Typical low12.7°C

Rain in August59 mm

Comfort

August

August · October · March

88climate match

Beach

May

May · April · June

75climate match

Outdoors

January

January · October · November

90climate match

The weakest month is January, scoring 69 against August’s 88 — nights drop to 4.9°C, and days reach only 20.3°C, 4° below the 24°C the score treats as ideal.

Month by month

The whole year,
without the guesswork.

The bars show the comfort score. Day and night temperatures come from daily observed highs and lows; rain is the historical monthly estimate.

Jan

6920.3° / 4.9°

Feb

7922.6° / 6.2°

Mar

8325.5° / 8.5°

Apr

7928° / 10.8°

May

7828.9° / 12.6°

Jun

8126.5° / 13.4°

Jul

8324.5° / 12.7°

Aug

8824.6° / 12.7°

Sep

8123° / 12.2°

Oct

8422.4° / 9.6°

Nov

7921.8° / 7.3°

Dec

7220.8° / 5.4°

Monthly climate evidence for San Francisco — daylight is calculated from latitude, everything else is measured
Month	Day	Night	Rain	Wet days	Daylight	Comfort	Coverage
January	20.3°C	4.9°C	17 mm	1.9	10 h 55	69	Good coverage
February	22.6°C	6.2°C	14 mm	1.4	11 h 23	79	Good coverage
March	25.5°C	8.5°C	10 mm	1.1	11 h 58	83	Good coverage
April	28°C	10.8°C	13 mm	2	12 h 38	79	Good coverage
May	28.9°C	12.6°C	32 mm	4.5	13 h 11	78	Good coverage
June	26.5°C	13.4°C	63 mm	6.9	13 h 28	81	Good coverage
July	24.5°C	12.7°C	83 mm	7.8	13 h 21	83	Good coverage
August	24.6°C	12.7°C	59 mm	6.4	12 h 53	88	Good coverage
September	23°C	12.2°C	78 mm	8.3	12 h 15	81	Good coverage
October	22.4°C	9.6°C	33 mm	4.5	11 h 36	84	Good coverage
November	21.8°C	7.3°C	9 mm	1.3	11 h 03	79	Good coverage
December	20.8°C	5.4°C	6 mm	1	10 h 48	72	Good coverage

Records at EL PEAJE, 1964–2011
Month	Record high	Record low	Wettest day	Wettest / driest month	Years
January	31.7°C24 Jan 1971	-5.0°C5 Jan 2000	32 mm12 Jan 2002	118 mm1992 · driest 0 mm in 1998	46
February	30.6°C5 Feb 1973	-5.0°C9 Feb 1967	60 mm3 Feb 2010	125 mm2010 · driest 0 mm in 1983	46
March	33.9°C13 Mar 2006	-1.7°C24 Mar 1986	36 mm19 Mar 1997	87 mm2004 · driest 0 mm in 1977	48
April	36.1°C23 Apr 1995	1.7°C1 Apr 1987	39 mm16 Apr 1965	90 mm1986 · driest 0 mm in 1964	45
May	42.2°C27 May 1987	3.9°C31 May 1984	47 mm20 May 1982	102 mm1992 · driest 2 mm in 2011	45
June	38.9°C26 Jun 1964	1.7°C2 Jun 1964	54 mm29 Jun 1968	201 mm1971 · driest 1 mm in 1982	45
July	35.0°C19 Jul 1981	3.9°C5 Jul 1996	69 mm12 Jul 1976	273 mm1976 · driest 3 mm in 1989	48
August	32.8°C22 Aug 1970	6.7°C22 Aug 1972	60 mm11 Aug 1995	280 mm2008 · driest 9 mm in 1987	45
September	32.8°C3 Sep 1987	1.7°C26 Sep 1975	86 mm21 Sep 1993	174 mm2009 · driest 1 mm in 1997	45
October	32.8°C23 Oct 1970	-1.1°C21 Oct 1975	35 mm9 Oct 1966	95 mm1998 · driest 0 mm in 1987	46
November	34.4°C12 Nov 1981	-4.4°C15 Nov 1975	34 mm3 Nov 2002	45 mm1964 · driest 0 mm in 2005	46
December	29.4°C19 Dec 1978	-5.0°C31 Dec 1983	64 mm3 Dec 1979	98 mm1979 · driest 0 mm in 1977	45

Typical days per month at EL PEAJE, 1991–2020
Month	Days 25°C+	Days 30°C+	Frost nights	Heavy rain (10 mm+)
January	4	0	2	<1
February	11	<1	<1	<1
March	21	4	<1	<1
April	25	13	0	<1
May	27	15	0	1
June	22	6	0	2
July	17	2	0	3
August	17	<1	0	2
September	11	<1	0	3
October	11	<1	0	1
November	7	<1	1	<1
December	5	0	2	<1

How often, not how much — every day in EL PEAJE’s record sorted by what it was actually like, rather than averaged
Month	Warm & dry days	Wet days	Washouts	Week with 3+ wet days	Daytime mean has ranged
January	65%	6%	2%	5%	18.4–22.2°C
February	79%	5%	<1%	2%	20.4–24.3°C
March	91%	4%	<1%	2%	23.1–27.4°C
April	92%	7%	2%	4%	26.1–29.9°C
May	86%	14%	3%	12%	27.2–30.3°C
June	77%	22%	7%	28%	24.5–29.1°C
July	75%	23%	9%	21%	22.1–26.7°C
August	79%	20%	6%	22%	22.9–26.6°C
September	71%	24%	8%	28%	21.5–25.3°C
October	76%	13%	3%	10%	20.1–24.6°C
November	78%	4%	<1%	2%	20.1–23.9°C
December	69%	5%	<1%	1%	19.3–22.3°C

A warm and dry day reaches 20°C with under 1 mm of rain; a wet day gets 1 mm or more; a washout gets 10 mm or more. The week column is the share of seven-day stretches in that month, across the station’s whole daily record, that contained three or more wet days — the odds a week-long trip is rained on repeatedly, counted rather than modelled. The last column is the 10th to 90th percentile of that month’s daytime average across individual years: a narrow band means the average is what you will get, a wide one means the average is a midpoint between years that felt quite different.

1964Each stripe is one year’s mean temperature against the 38-year average. Warmest: 2003. Coolest: 1992.2011

The evidence behind this page

Nearby, measured,
and named.

Place identity: GeoNames 3987128
NOAA station: MXN00024024 · EL PEAJE
Station distance: 11.2 km from the place centre
Climate period: 1991–2020
Minimum month coverage: 20 usable years
Daylight: Calculated from latitude 22.00°, mid-month, sunrise to sunset including refraction. Not a station measurement.
Important limit: Historical climate is not a forecast. Nearby stations can miss mountains, coasts, and local microclimates.

These places read the same station, so their numbers are identical — distance from EL PEAJE is what differs

Escalerillas→Pozuelos→La Mesa de los Conejos→San Antonio→Colonia Insurgentes→Saucillo→

Or put two places side by side: San Francisco vs Escalerillas

Best time to visitSan Francisco.

August

May

January

The whole year,without the guesswork.

Nearby, measured,and named.

Best time to visit
San Francisco.

The whole year,
without the guesswork.

Nearby, measured,
and named.