January
January · December · November
Mexico · 1991–2020
January leads for comfortable weather in San Francisco Tesistán: typically 24.5°C by day, 8.4°C at night, with 19 mm of rain. Based on measured 1991–2020 NOAA station history.
January · December · November
May · March · April
January · December · November
The weakest month is July, scoring 36 against January’s 87 — 295 mm of rain falls.
Month by month
The bars show the comfort score. Day and night temperatures come from daily observed highs and lows; rain is the historical monthly estimate.
| Month | Day | Night | Rain | Wet days | Daylight | Comfort | Coverage |
|---|---|---|---|---|---|---|---|
| January | 24.5°C | 8.4°C | 19 mm | 1.3 | 11 h | 87 | Good coverage |
| February | 27°C | 9.7°C | 10 mm | 0.7 | 11 h 26 | 81 | Good coverage |
| March | 29.6°C | 10.9°C | 3 mm | 0.3 | 11 h 58 | 74 | Good coverage |
| April | 31.9°C | 13.3°C | 3 mm | 0.6 | 12 h 36 | 71 | Good coverage |
| May | 33.3°C | 15.2°C | 23 mm | 2.3 | 13 h 07 | 69 | Good coverage |
| June | 31°C | 16.1°C | 206 mm | 12.4 | 13 h 23 | 43 | Good coverage |
| July | 28°C | 15.7°C | 295 mm | 17.9 | 13 h 17 | 36 | Good coverage |
| August | 27.9°C | 15.8°C | 219 mm | 16.9 | 12 h 50 | 47 | Good coverage |
| September | 27.5°C | 15.6°C | 189 mm | 13.2 | 12 h 14 | 57 | Good coverage |
| October | 27.1°C | 14°C | 63 mm | 5.4 | 11 h 38 | 82 | Good coverage |
| November | 26.5°C | 10.8°C | 7 mm | 0.9 | 11 h 07 | 84 | Good coverage |
| December | 25°C | 8.9°C | 3 mm | 0.7 | 10 h 52 | 86 | Good coverage |
| Month | Record high | Record low | Wettest day | Wettest / driest month | Years |
|---|---|---|---|---|---|
| January | 35.6°C22 Jan 1943 | -4.4°C13 Jan 1943 | 60 mm25 Jan 1992 | 251 mm1992 · driest 0 mm in 2002 | 49 |
| February | 38.9°C27 Feb 1943 | -2.2°C4 Feb 1943 | 45 mm2 Feb 2010 | 137 mm2010 · driest 0 mm in 1994 | 45 |
| March | 40.0°C30 Mar 1946 | 0.6°C7 Mar 1942 | 24 mm7 Mar 1997 | 58 mm1997 · driest 0 mm in 1971 | 47 |
| April | 41.7°C8 Apr 1943 | 0.6°C3 Apr 1943 | 24 mm8 Apr 1948 | 56 mm1997 · driest 0 mm in 1942 | 48 |
| May | 40.6°C17 May 1943 | 6.7°C6 May 2001 | 40 mm29 May 2000 | 87 mm2000 · driest 0 mm in 2003 | 44 |
| June | 40.6°C2 Jun 1949 | 6.7°C19 Jun 2005 | 100 mm13 Jun 1946 | 432 mm2008 · driest 24 mm in 2005 | 44 |
| July | 36.1°C24 Jul 1946 | 9.4°C27 Jul 1989 | 83 mm6 Jul 1947 | 462 mm1991 · driest 0 mm in 1944 | 48 |
| August | 38.3°C23 Aug 2009 | 8.9°C15 Aug 1945 | 85 mm8 Aug 1998 | 376 mm1973 · driest 92 mm in 1981 | 46 |
| September | 36.7°C22 Sep 1942 | 10.0°C28 Sep 1979 | 91 mm21 Sep 2010 | 438 mm2004 · driest 48 mm in 1948 | 46 |
| October | 38.9°C28 Oct 1942 | 6.7°C29 Oct 1942 | 72 mm14 Oct 1946 | 184 mm1946 · driest 0 mm in 1979 | 47 |
| November | 38.9°C1 Nov 1942 | 0.6°C28 Nov 1942 | 78 mm26 Nov 1982 | 92 mm1982 · driest 0 mm in 2004 | 46 |
| December | 38.9°C23 Dec 1948 | -5.0°C29 Dec 1942 | 22 mm2 Dec 1979 | 48 mm1989 · driest 0 mm in 1994 | 46 |
| Month | Days 25°C+ | Days 30°C+ | Heavy rain (10 mm+) |
|---|---|---|---|
| January | 19 | <1 | <1 |
| February | 24 | 5 | <1 |
| March | 30 | 17 | <1 |
| April | 30 | 26 | <1 |
| May | 31 | 30 | <1 |
| June | 29 | 21 | 7 |
| July | 29 | 9 | 10 |
| August | 29 | 7 | 8 |
| September | 28 | 5 | 6 |
| October | 28 | 4 | 2 |
| November | 25 | 2 | <1 |
| December | 21 | <1 | <1 |
| Month | Warm & dry days | Wet days | Washouts | Week with 3+ wet days | Daytime mean has ranged |
|---|---|---|---|---|---|
| January | 93% | 5% | 1% | 4% | 23.0–27.7°C |
| February | 96% | 3% | 1% | 1% | 25.1–30.4°C |
| March | 99% | 1% | <1% | <1% | 28.4–32.5°C |
| April | 98% | 2% | <1% | 2% | 30.6–34.6°C |
| May | 93% | 8% | 2% | 8% | 31.8–35.3°C |
| June | 59% | 42% | 21% | 63% | 29.1–33.6°C |
| July | 43% | 57% | 28% | 82% | 25.9–30.1°C |
| August | 46% | 54% | 23% | 80% | 26.4–30.6°C |
| September | 60% | 42% | 18% | 53% | 26.1–30.1°C |
| October | 84% | 18% | 7% | 16% | 26.3–30.1°C |
| November | 95% | 5% | 1% | 3% | 24.8–28.5°C |
| December | 94% | 5% | 1% | 4% | 23.6–27.5°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.
The evidence behind this page