March
March · April · May
Mexico · 1991–2020
March leads for comfortable weather in San Antonio el Llano: typically 23.5°C by day, 6.8°C at night, with 12 mm of rain. Based on measured 1991–2020 NOAA station history.
March · April · May
April · May · March
January · December · February
The weakest month is September, scoring 32 against March’s 84 — 259 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 | 19.7°C | 4.5°C | 18 mm | 2.6 | 11 h 02 | 67 | Good coverage |
| February | 21.3°C | 5.2°C | 21 mm | 2.4 | 11 h 27 | 73 | Good coverage |
| March | 23.5°C | 6.8°C | 12 mm | 2.3 | 11 h 59 | 84 | Good coverage |
| April | 25°C | 8.2°C | 33 mm | 4.4 | 12 h 35 | 83 | Good coverage |
| May | 24.8°C | 8.7°C | 44 mm | 5.4 | 13 h 05 | 82 | Good coverage |
| June | 22.2°C | 9°C | 163 mm | 11.7 | 13 h 21 | 58 | Good coverage |
| July | 21°C | 8.5°C | 198 mm | 14.5 | 13 h 15 | 45 | Good coverage |
| August | 20.9°C | 8.4°C | 175 mm | 12.9 | 12 h 49 | 49 | Good coverage |
| September | 19.8°C | 8.8°C | 259 mm | 15.9 | 12 h 14 | 32 | Good coverage |
| October | 19.6°C | 7.2°C | 140 mm | 9.9 | 11 h 39 | 51 | Good coverage |
| November | 19.4°C | 5.3°C | 36 mm | 4.4 | 11 h 09 | 66 | Good coverage |
| December | 19.9°C | 4.6°C | 9 mm | 1.6 | 10 h 55 | 68 | Good coverage |
| Month | Record high | Record low | Wettest day | Wettest / driest month | Years |
|---|---|---|---|---|---|
| January | 27.8°C8 Jan 1988 | -6.1°C27 Jan 1988 | 29 mm28 Jan 1992 | 71 mm1992 · driest 0 mm in 1996 | 29 |
| February | 28.9°C16 Feb 1998 | -6.1°C23 Feb 1989 | 60 mm3 Feb 2010 | 130 mm2010 · driest 0 mm in 2003 | 29 |
| March | 30.0°C28 Mar 1984 | -4.4°C22 Mar 1986 | 44 mm4 Mar 1988 | 64 mm1997 · driest 0 mm in 1998 | 29 |
| April | 32.8°C14 Apr 1998 | 0.0°C1 Apr 2003 | 25 mm12 Apr 1981 | 86 mm2004 · driest 0 mm in 1983 | 29 |
| May | 33.9°C9 May 1998 | 2.8°C31 May 1984 | 75 mm27 May 1999 | 213 mm1982 · driest 0 mm in 1998 | 29 |
| June | 30.6°C15 Jun 1998 | 3.9°C18 Jun 2004 | 71 mm18 Jun 1991 | 449 mm1981 · driest 17 mm in 1982 | 29 |
| July | 28.9°C18 Jul 2006 | 2.8°C24 Jul 2002 | 85 mm5 Jul 2010 | 487 mm2010 · driest 48 mm in 2000 | 30 |
| August | 28.9°C11 Aug 2010 | 3.9°C14 Aug 1999 | 126 mm22 Aug 2007 | 401 mm1999 · driest 67 mm in 1991 | 26 |
| September | 25.6°C8 Sep 2001 | 0.0°C9 Sep 2011 | 100 mm27 Sep 2007 | 587 mm1998 · driest 47 mm in 1999 | 28 |
| October | 28.9°C8 Oct 1994 | -2.2°C18 Oct 1997 | 100 mm4 Oct 1999 | 312 mm1991 · driest 12 mm in 2012 | 31 |
| November | 25.6°C27 Nov 1994 | -4.4°C17 Nov 2002 | 40 mm6 Nov 2002 | 110 mm1992 · driest 1 mm in 1988 | 31 |
| December | 26.7°C15 Dec 1984 | -6.1°C30 Dec 1983 | 31 mm3 Dec 2006 | 49 mm1991 · driest 0 mm in 2010 | 30 |
| Month | Days 25°C+ | Days 30°C+ | Frost nights | Heavy rain (10 mm+) |
|---|---|---|---|---|
| January | 1 | 0 | 2 | <1 |
| February | 6 | 0 | 2 | <1 |
| March | 15 | <1 | <1 | <1 |
| April | 19 | 2 | <1 | 1 |
| May | 18 | 3 | 0 | 1 |
| June | 7 | <1 | 0 | 6 |
| July | 2 | 0 | 0 | 7 |
| August | <1 | 0 | 0 | 6 |
| September | <1 | 0 | <1 | 9 |
| October | 2 | 0 | <1 | 4 |
| November | 1 | 0 | 2 | 1 |
| December | <1 | 0 | 2 | <1 |
| Month | Warm & dry days | Wet days | Washouts | Week with 3+ wet days | Daytime mean has ranged |
|---|---|---|---|---|---|
| January | 59% | 8% | 2% | 6% | 17.2–21.0°C |
| February | 68% | 10% | 2% | 7% | 19.0–22.8°C |
| March | 80% | 8% | <1% | 6% | 21.5–25.1°C |
| April | 77% | 17% | 4% | 18% | 21.9–26.7°C |
| May | 75% | 21% | 6% | 25% | 22.1–26.9°C |
| June | 51% | 43% | 19% | 60% | 20.3–23.9°C |
| July | 40% | 51% | 21% | 67% | 18.3–22.2°C |
| August | 47% | 44% | 20% | 65% | 19.0–21.9°C |
| September | 32% | 54% | 27% | 67% | 17.9–20.7°C |
| October | 46% | 31% | 12% | 36% | 17.7–20.8°C |
| November | 55% | 13% | 3% | 9% | 18.3–20.6°C |
| December | 61% | 6% | 1% | 3% | 18.3–21.0°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