Ajalpan, Mexico Climate
The warmest month is April, with an average high of 27°C; the coldest is January, with an average low of 6°C. A normal year brings 1057 mm of precipitation.
Temperature through the year
The normal daily high and low. The line marks today.
- Normal low
- Normal high
- Reanalysis extreme high
- Reanalysis extreme low
Normals for Sep 24
- Normal high
- 21°C
- Normal low
- 12°C
- Reanalysis high
- 25°Cin 2019
- Reanalysis low
- 10°Cin 1991
- Chance of a wet day
- 82%
- Daylight
- 12 h 05 min
Month by month
Averages for 1991-2020. Wet days have at least 1 mm of precipitation in the reanalysis. Each month links to its own page.
| Month | Avg high | Avg low | Warmest | Coldest | Precipitation | Wet days |
|---|---|---|---|---|---|---|
| January | 19°C | 6°C | 26°C (2001) | -3°C (1996) | 16 mm | 3.1 |
| February | 22°C | 7°C | 29°C (2019) | -1°C (1998) | 11 mm | 2.8 |
| March | 24°C | 9°C | 32°C (2006) | -1°C (2013) | 19 mm | 6.2 |
| April | 27°C | 11°C | 32°C (2013) | 3°C (2003) | 33 mm | 9.0 |
| May | 26°C | 13°C | 33°C (2003) | 5°C (2014) | 71 mm | 15.5 |
| June | 24°C | 13°C | 32°C (2005) | 7°C (2011) | 171 mm | 24.0 |
| July | 22°C | 12°C | 28°C (2009) | 7°C (1992) | 171 mm | 24.8 |
| August | 22°C | 12°C | 28°C (2015) | 6°C (2000) | 202 mm | 27.9 |
| September | 21°C | 12°C | 26°C (2006) | 6°C (2008) | 213 mm | 27.0 |
| October | 21°C | 10°C | 27°C (2009) | 0°C (1999) | 102 mm | 18.6 |
| November | 20°C | 8°C | 26°C (2016) | -3°C (2010) | 36 mm | 9.0 |
| December | 19°C | 7°C | 26°C (2015) | -2°C (2017) | 12 mm | 3.1 |
| Year | 22°C | 10°C | 1057 mm | 171 |
Precipitation
Rain and melted snow together. The chance of a wet day is the share of days with at least 1 mm of precipitation in the reanalysis.
1057 mm in a normal year, most in September.
Chance of a wet day
- Chance of a wet day
Humidity and comfort
NASA POWER reanalysis, 1991-2020, for the grid cell around Ajalpan.
Days with a mean dew point of 18°C or more are rare here in every month.
| Month | Dew point | Humidity | Dry | Comfortable | Humid | Muggy | Oppressive | Miserable |
|---|---|---|---|---|---|---|---|---|
| January | 7°C | 76% | 100% | 0% | 0% | 0% | 0% | 0% |
| February | 7°C | 71% | 100% | 0% | 0% | 0% | 0% | 0% |
| March | 8°C | 66% | 99% | 1% | 0% | 0% | 0% | 0% |
| April | 9°C | 62% | 96% | 4% | 0% | 0% | 0% | 0% |
| May | 11°C | 68% | 78% | 22% | 0% | 0% | 0% | 0% |
| June | 13°C | 77% | 44% | 56% | 0% | 0% | 0% | 0% |
| July | 12°C | 79% | 69% | 31% | 0% | 0% | 0% | 0% |
| August | 13°C | 81% | 58% | 42% | 0% | 0% | 0% | 0% |
| September | 13°C | 84% | 39% | 61% | 0% | 0% | 0% | 0% |
| October | 12°C | 83% | 64% | 36% | 0% | 0% | 0% | 0% |
| November | 9°C | 81% | 94% | 6% | 0% | 0% | 0% | 0% |
| December | 8°C | 79% | 100% | 0% | 0% | 0% | 0% | 0% |
Comfort is judged by the day's mean dew point: dry below 13°C, comfortable to 16°C, humid to 18°C, muggy to 21°C, oppressive to 24°C, miserable above.
Clouds
Average share of the sky covered, from satellite (CERES and GEWEX SRB) by way of NASA POWER, 1991-2020.
The clearest month is February, with the sky 31 percent covered on average; the cloudiest is September, at 72 percent.
Wind
The mean wind speed over the whole day, from the MERRA-2 reanalysis by way of NASA POWER. Gusts run well above it.
The windiest month is July, averaging 16.6 km/h at 10 meters (33 feet) above the ground.
Daylight and sunshine
The longest day is Jun 12, with 13 h 14 min of daylight; the shortest is Dec 17, with 11 h 01 min.
- Day length
Solar energy
Average daily sunshine reaching the ground on a flat surface, in kilowatt-hours per square meter, clouds included.
Month pages
The weather in Ajalpan in each month, day by day.
What this means
A normal is the average of the thirty years 1991 to 2020, the period the World Meteorological Organization and NOAA use for comparison. It is an average, not a forecast: most days depart from it, and some by a long way.
Where no station record is within reach, the extremes shown are the highest and lowest the reanalysis produced for the date in 1991-2020, not measured records.
Cloud, humidity, wind and sunshine come from a reanalysis: a weather model run over the past with every observation fed in, averaged over a grid cell about 50 km across. It is consistent everywhere on Earth; it smooths local detail such as a lake shore or a valley.
More for this place
Nearby
Sources
Cloud, humidity, wind and sunshine, and temperature and precipitation: NASA POWER (MERRA-2, CERES and GEWEX SRB), 1991-2020. The data was obtained from the National Aeronautics and Space Administration (NASA) Langley Research Center's Prediction Of Worldwide Energy Resources (POWER) project funded through the NASA Earth Science Division: POWER Daily API v2, accessed 2026-09-24. Sun and moon: computed with the NOAA solar equations and Meeus.