December
December · January · November
Mexico · 1991–2020
December leads for comfortable weather in Arroyo del Fraile: typically 33.1°C by day, 11.9°C at night, with 17 mm of rain. Based on measured 1991–2020 NOAA station history.
December · January · November
October · November · December
January · December · February
The weakest month is June, scoring 10 against December’s 65 — days average 40.6°C, 17° above the 24°C the score treats as ideal.
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 | 33°C | 11.1°C | 26 mm | 1.6 | 10 h 54 | 63 | Good coverage |
| February | 35.2°C | 13°C | 14 mm | 1.3 | 11 h 23 | 59 | Good coverage |
| March | 38.4°C | 14.6°C | 2 mm | 0.3 | 11 h 58 | 52 | Good coverage |
| April | 40.9°C | 17.3°C | 3 mm | 0.3 | 12 h 38 | 40 | Good coverage |
| May | 42.4°C | 21.2°C | 7 mm | 0.7 | 13 h 11 | 28 | Good coverage |
| June | 40.6°C | 23.9°C | 131 mm | 9.4 | 13 h 29 | 10 | Good coverage |
| July | 36.7°C | 22.3°C | 200 mm | 15.3 | 13 h 22 | 11 | Good coverage |
| August | 36.5°C | 22.2°C | 178 mm | 14 | 12 h 54 | 16 | Good coverage |
| September | 36.1°C | 22.4°C | 133 mm | 10.8 | 12 h 15 | 26 | Good coverage |
| October | 37°C | 20.2°C | 51 mm | 3.5 | 11 h 36 | 45 | Good coverage |
| November | 35.7°C | 15.3°C | 12 mm | 1.2 | 11 h 03 | 61 | Good coverage |
| December | 33.1°C | 11.9°C | 17 mm | 1.4 | 10 h 47 | 65 | Good coverage |
| Month | Record high | Record low | Wettest day | Wettest / driest month | Years |
|---|---|---|---|---|---|
| January | 40.6°C13 Jan 2000 | 2.8°C2 Jan 1966 | 60 mm24 Jan 1979 | 276 mm1992 · driest 0 mm in 1969 | 45 |
| February | 43.9°C28 Feb 2009 | 3.9°C7 Feb 1971 | 73 mm2 Feb 2010 | 102 mm2010 · driest 0 mm in 2001 | 44 |
| March | 45.6°C16 Mar 2007 | 3.9°C1 Mar 1966 | 63 mm4 Mar 1968 | 131 mm1968 · driest 0 mm in 2006 | 44 |
| April | 45.6°C20 Apr 2003 | 10.0°C21 Apr 1988 | 27 mm2 Apr 1966 | 39 mm1997 · driest 0 mm in 1979 | 41 |
| May | 46.7°C15 May 2000 | 10.6°C3 May 1978 | 29 mm28 May 1969 | 63 mm2009 · driest 0 mm in 2013 | 41 |
| June | 47.2°C23 Jun 1998 | 11.1°C15 Jun 1990 | 95 mm28 Jun 2007 | 300 mm2007 · driest 17 mm in 1989 | 45 |
| July | 45.0°C4 Jul 2006 | 12.8°C12 Jul 1989 | 100 mm1 Jul 1998 | 595 mm1964 · driest 62 mm in 1966 | 43 |
| August | 45.0°C17 Aug 2013 | 17.8°C18 Aug 2000 | 71 mm19 Aug 1980 | 379 mm1975 · driest 71 mm in 1966 | 44 |
| September | 43.9°C19 Sep 1974 | 12.8°C28 Sep 1989 | 80 mm1 Sep 2011 | 308 mm1964 · driest 16 mm in 1974 | 43 |
| October | 45.6°C20 Oct 1974 | 9.4°C25 Oct 2007 | 64 mm25 Oct 2002 | 195 mm1994 · driest 0 mm in 2010 | 44 |
| November | 41.7°C2 Nov 2008 | 2.8°C17 Nov 1970 | 65 mm23 Nov 1972 | 193 mm1976 · driest 0 mm in 1981 | 41 |
| December | 40.0°C5 Dec 2012 | 1.1°C14 Dec 1997 | 60 mm13 Dec 1992 | 112 mm1969 · driest 0 mm in 2004 | 43 |
| Month | Days 25°C+ | Days 30°C+ | Heavy rain (10 mm+) |
|---|---|---|---|
| January | 30 | 26 | <1 |
| February | 28 | 26 | <1 |
| March | 31 | 31 | 0 |
| April | 30 | 29 | <1 |
| May | 31 | 31 | <1 |
| June | 30 | 30 | 4 |
| July | 31 | 31 | 7 |
| August | 31 | 31 | 6 |
| September | 30 | 29 | 4 |
| October | 31 | 30 | 2 |
| November | 30 | 28 | <1 |
| December | 30 | 26 | <1 |
| Month | Warm & dry days | Wet days | Washouts | Week with 3+ wet days | Daytime mean has ranged |
|---|---|---|---|---|---|
| January | 95% | 5% | 2% | 4% | 28.2–35.1°C |
| February | 95% | 5% | 1% | 3% | 30.4–37.5°C |
| March | 99% | 1% | <1% | <1% | 34.6–39.9°C |
| April | 99% | 1% | <1% | <1% | 37.9–42.3°C |
| May | 97% | 3% | <1% | 3% | 39.8–43.5°C |
| June | 69% | 30% | 15% | 45% | 37.6–41.9°C |
| July | 49% | 51% | 24% | 72% | 33.0–37.6°C |
| August | 53% | 47% | 22% | 71% | 33.0–37.8°C |
| September | 64% | 37% | 15% | 46% | 33.4–37.2°C |
| October | 91% | 9% | 4% | 5% | 34.2–38.8°C |
| November | 96% | 4% | 2% | 4% | 31.9–37.1°C |
| December | 93% | 7% | 2% | 6% | 29.2–34.5°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