December
December · January · February
Mexico · 1991–2020
December leads for comfortable weather in Tlalnepantla: typically 23.7°C by day, 13.6°C at night, with 27 mm of rain. Based on measured 1991–2020 NOAA station history.
December · January · February
March · April · February
January · December · February
The weakest month is September, scoring 6 against December’s 95 — 400 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 | 23.5°C | 12.7°C | 31 mm | 4 | 10 h 58 | 93 | Good coverage |
| February | 25.7°C | 13.7°C | 33 mm | 4.4 | 11 h 25 | 91 | Good coverage |
| March | 28.8°C | 16.2°C | 37 mm | 4.6 | 11 h 58 | 80 | Good coverage |
| April | 31.7°C | 18.3°C | 68 mm | 4.8 | 12 h 36 | 62 | Good coverage |
| May | 33.6°C | 21.4°C | 120 mm | 5.6 | 13 h 08 | 42 | Good coverage |
| June | 33.5°C | 22.3°C | 210 mm | 10.9 | 13 h 25 | 24 | Good coverage |
| July | 31.9°C | 21.6°C | 271 mm | 13.1 | 13 h 18 | 20 | Good coverage |
| August | 32.2°C | 21.4°C | 303 mm | 12.7 | 12 h 51 | 15 | Good coverage |
| September | 30.5°C | 20.9°C | 400 mm | 14.7 | 12 h 14 | 6 | Good coverage |
| October | 28.4°C | 18.7°C | 243 mm | 10.3 | 11 h 38 | 43 | Good coverage |
| November | 25.8°C | 15.9°C | 85 mm | 6.9 | 11 h 06 | 82 | Good coverage |
| December | 23.7°C | 13.6°C | 27 mm | 4.3 | 10 h 51 | 95 | Good coverage |
| Month | Record high | Record low | Wettest day | Wettest / driest month | Years |
|---|---|---|---|---|---|
| January | 40.0°C11 Jan 1963 | 0.0°C13 Jan 1962 | 70 mm18 Jan 1969 | 108 mm1969 · driest 1 mm in 2007 | 49 |
| February | 40.6°C23 Feb 1962 | 2.8°C25 Feb 2010 | 95 mm4 Feb 1993 | 104 mm1993 · driest 1 mm in 1986 | 49 |
| March | 42.8°C29 Mar 2000 | 4.4°C3 Mar 1980 | 114 mm17 Mar 1980 | 165 mm2004 · driest 1 mm in 1984 | 48 |
| April | 47.8°C16 Apr 1998 | 6.7°C2 Apr 1987 | 149 mm14 Apr 1964 | 280 mm1985 · driest 1 mm in 1961 | 49 |
| May | 46.1°C5 May 1999 | 12.8°C3 May 2010 | 166 mm1 May 1966 | 441 mm1984 · driest 5 mm in 2010 | 50 |
| June | 45.0°C10 Jun 1963 | 13.3°C3 Jun 1971 | 156 mm16 Jun 1981 | 764 mm1981 · driest 30 mm in 1982 | 50 |
| July | 38.9°C11 Jul 1963 | 16.7°C21 Jul 2008 | 223 mm4 Jul 1974 | 923 mm1983 · driest 35 mm in 1980 | 49 |
| August | 40.6°C30 Aug 1963 | 16.7°C7 Aug 1983 | 371 mm7 Aug 1990 | 812 mm2007 · driest 28 mm in 1982 | 50 |
| September | 41.7°C18 Sep 1963 | 13.3°C25 Sep 1975 | 349 mm20 Sep 1993 | 933 mm1984 · driest 66 mm in 1997 | 48 |
| October | 36.7°C6 Oct 1963 | 7.8°C25 Oct 2007 | 194 mm24 Oct 1992 | 633 mm2005 · driest 43 mm in 2010 | 48 |
| November | 37.8°C22 Nov 1963 | 3.9°C29 Nov 1966 | 153 mm22 Nov 1989 | 306 mm1998 · driest 3 mm in 1981 | 50 |
| December | 36.7°C11 Dec 1963 | 0.6°C23 Dec 1989 | 62 mm1 Dec 1981 | 163 mm1981 · driest 2 mm in 2002 | 49 |
| Month | Days 25°C+ | Days 30°C+ | Heavy rain (10 mm+) |
|---|---|---|---|
| January | 13 | 2 | <1 |
| February | 18 | 6 | 1 |
| March | 25 | 13 | 1 |
| April | 25 | 19 | 2 |
| May | 30 | 27 | 3 |
| June | 29 | 26 | 6 |
| July | 31 | 27 | 7 |
| August | 31 | 28 | 8 |
| September | 29 | 21 | 10 |
| October | 28 | 13 | 6 |
| November | 20 | 4 | 2 |
| December | 12 | <1 | <1 |
| Month | Warm & dry days | Wet days | Washouts | Week with 3+ wet days | Daytime mean has ranged |
|---|---|---|---|---|---|
| January | 70% | 14% | 3% | 10% | 21.2–25.5°C |
| February | 76% | 15% | 2% | 9% | 23.4–27.4°C |
| March | 83% | 14% | 3% | 11% | 26.5–31.0°C |
| April | 83% | 18% | 7% | 17% | 29.5–33.7°C |
| May | 78% | 22% | 11% | 23% | 31.0–35.9°C |
| June | 60% | 40% | 24% | 56% | 31.6–35.1°C |
| July | 55% | 45% | 24% | 57% | 30.0–33.9°C |
| August | 58% | 42% | 25% | 59% | 30.9–34.5°C |
| September | 51% | 49% | 30% | 66% | 28.9–32.3°C |
| October | 69% | 31% | 17% | 35% | 27.0–29.9°C |
| November | 74% | 22% | 6% | 20% | 23.9–28.2°C |
| December | 71% | 15% | 3% | 10% | 21.9–25.5°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