October
October · September · November
Mexico · 1991–2020
October leads for comfortable weather in San Antonio: typically 24°C by day, 7.1°C at night, with 39 mm of rain. Based on measured 1991–2020 NOAA station history.
October · September · November
April · May · June
October · November · December
The weakest month is April, scoring 69 against October’s 83 — days average 29°C, 5° above the 24°C the score treats as ideal, and nights drop to 7.2°C.
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 | 22.9°C | 1.9°C | 10 mm | 1.6 | 11 h 01 | 73 | Good coverage |
| February | 24.6°C | 2.9°C | 14 mm | 1.5 | 11 h 26 | 76 | Good coverage |
| March | 27.3°C | 4.6°C | 6 mm | 1.1 | 11 h 58 | 70 | Good coverage |
| April | 29°C | 7.2°C | 16 mm | 2.4 | 12 h 35 | 69 | Good coverage |
| May | 28.5°C | 8.7°C | 38 mm | 4.9 | 13 h 06 | 72 | Good coverage |
| June | 27.2°C | 10.4°C | 80 mm | 7 | 13 h 22 | 71 | Good coverage |
| July | 25.4°C | 10.3°C | 86 mm | 7.7 | 13 h 16 | 75 | Good coverage |
| August | 25.5°C | 10.1°C | 79 mm | 6.9 | 12 h 50 | 77 | Good coverage |
| September | 24.6°C | 9.7°C | 65 mm | 6.7 | 12 h 14 | 81 | Good coverage |
| October | 24°C | 7.1°C | 39 mm | 5.1 | 11 h 38 | 83 | Good coverage |
| November | 23.6°C | 4.3°C | 10 mm | 1.4 | 11 h 08 | 79 | Good coverage |
| December | 22.9°C | 2.2°C | 3 mm | 0.8 | 10 h 54 | 73 | Good coverage |
| Month | Record high | Record low | Wettest day | Wettest / driest month | Years |
|---|---|---|---|---|---|
| January | 33.9°C26 Jan 2012 | -7.2°C11 Jan 2006 | 21 mm13 Jan 2002 | 71 mm1992 · driest 0 mm in 1997 | 26 |
| February | 33.9°C4 Feb 2012 | -5.0°C18 Feb 2002 | 35 mm2 Feb 2010 | 120 mm2010 · driest 0 mm in 1997 | 24 |
| March | 35.6°C20 Mar 1991 | -4.4°C6 Mar 2002 | 26 mm29 Mar 2004 | 42 mm2004 · driest 0 mm in 1986 | 27 |
| April | 36.7°C23 Apr 2011 | 0.0°C5 Apr 2000 | 44 mm23 Apr 2006 | 80 mm2006 · driest 0 mm in 2008 | 27 |
| May | 37.8°C29 May 2011 | -1.1°C10 May 2001 | 36 mm27 May 2005 | 95 mm1997 · driest 0 mm in 2008 | 24 |
| June | 35.6°C15 Jun 1998 | 2.8°C5 Jun 2000 | 94 mm10 Jun 2008 | 196 mm2003 · driest 3 mm in 2006 | 26 |
| July | 32.8°C31 Jul 2009 | 2.8°C15 Jul 2000 | 46 mm5 Jul 2002 | 172 mm2001 · driest 10 mm in 2009 | 24 |
| August | 32.8°C10 Aug 2011 | 1.7°C18 Aug 2000 | 74 mm21 Aug 2003 | 200 mm2008 · driest 0 mm in 2007 | 24 |
| September | 32.8°C30 Sep 2011 | 0.6°C29 Sep 2000 | 61 mm5 Sep 2003 | 159 mm2002 · driest 0 mm in 2007 | 26 |
| October | 33.9°C16 Oct 2007 | -4.4°C20 Oct 2001 | 46 mm10 Oct 1997 | 104 mm1997 · driest 0 mm in 1987 | 26 |
| November | 33.9°C21 Nov 2011 | -5.0°C30 Nov 2011 | 47 mm10 Nov 1997 | 47 mm1997 · driest 0 mm in 1996 | 26 |
| December | 33.9°C6 Dec 2011 | -8.3°C29 Dec 2005 | 9 mm18 Dec 1991 | 21 mm1995 · driest 0 mm in 1987 | 25 |
| Month | Days 25°C+ | Days 30°C+ | Frost nights | Heavy rain (10 mm+) |
|---|---|---|---|---|
| January | 13 | 1 | 9 | <1 |
| February | 17 | 3 | 4 | <1 |
| March | 26 | 10 | 2 | <1 |
| April | 26 | 16 | <1 | <1 |
| May | 26 | 15 | <1 | 1 |
| June | 24 | 10 | 0 | 3 |
| July | 23 | 2 | 0 | 3 |
| August | 24 | 2 | 0 | 3 |
| September | 20 | 1 | 0 | 3 |
| October | 17 | 2 | 1 | 1 |
| November | 14 | 2 | 3 | <1 |
| December | 13 | 1 | 7 | 0 |
| Month | Warm & dry days | Wet days | Washouts | Week with 3+ wet days | Daytime mean has ranged |
|---|---|---|---|---|---|
| January | 81% | 5% | <1% | 4% | 18.7–25.0°C |
| February | 84% | 5% | 1% | 3% | 22.4–26.8°C |
| March | 90% | 4% | <1% | 2% | 23.6–29.6°C |
| April | 90% | 9% | 2% | 6% | 26.2–32.0°C |
| May | 81% | 16% | 4% | 18% | 24.2–32.0°C |
| June | 73% | 24% | 9% | 32% | 24.9–30.1°C |
| July | 70% | 25% | 9% | 26% | 23.7–28.2°C |
| August | 72% | 22% | 9% | 25% | 24.8–27.8°C |
| September | 72% | 22% | 7% | 26% | 23.2–27.0°C |
| October | 73% | 15% | 3% | 16% | 22.6–26.6°C |
| November | 83% | 5% | <1% | 3% | 22.3–25.3°C |
| December | 82% | 3% | 0% | 2% | 21.2–24.4°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