Climate averages 1991–2020
Tepexpan weather
in September.
A mild, wet month: the 8th warmest and the 11th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
September is a mild month in Tepexpan: daytime highs average 20.8°C and nights cool to about 11.8°C. By daytime temperature it is the 8th warmest of the 12 months.
Expect about 151 mm of rain on roughly 19 days, which makes September a wet month (the 11th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 12 h 16 min on an average September day.
The nearest other city in this atlas is Ojo de Agua (11 km away). In September its highs average 21.0°C, about as warm as Tepexpan, with 96 mm of rain.
Among the 153 cities listed in Mexico, Tepexpan ranks joint 130th of 153 for the warmest September highs and joint 77th of 153 for the driest September (rainfall, lowest first). The mean September high of those 153 cities is 26.5°C; Tepexpan is 5.7°C cooler than that mean.
From September to October, average highs fall by 0.4°C to 20.4°C, and monthly rainfall falls from 151 mm to 72 mm.
The annual picture
September in context
Monthly rainfall
Average total · mmAverages from hourly ERA5 reanalysis data. Actual weather varies from year to year. How these numbers are calculated
Every month, side by side
Tepexpan climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 20.3°C5.9°C | 5.9°C | 10 | 2.2 | 11.111 h |
| February | 22.5°C7.1°C | 7.1°C | 8.1 | 1.8 | 11.511 h |
| March | 24.5°C8.6°C | 8.6°C | 9.0 | 2.8 | 12.012 h |
| April | 25.7°C10.4°C | 10.4°C | 18 | 4.1 | 12.613 h |
| May | 25.5°C11.6°C | 11.6°C | 29 | 7.1 | 13.113 h |
| June | 23.5°C12.5°C | 12.5°C | 118 | 16.1 | 13.313 h |
| July | 21.9°C11.8°C | 11.8°C | 141 | 22.1 | 13.213 h |
| August | 21.8°C12.1°C | 12.1°C | 159 | 21.7 | 12.813 h |
| September, selected | 20.8°C11.8°C | 11.8°C | 151 | 19.4 | 12.312 h |
| October | 20.4°C9.9°C | 9.9°C | 72 | 10.4 | 11.712 h |
| November | 20.4°C7.9°C | 7.9°C | 17 | 3.6 | 11.211 h |
| December | 20.5°C6.6°C | 6.6°C | 6.3 | 1.3 | 11.011 h |
Rainfall is the average of the 30 separate monthly totals. A rain day is a local calendar day with at least 1 mm of precipitation. Daylight is the calculated sunrise-to-sunset length, not measured sunshine.
Compare places
September in nearby cities
- Ojo de Agua in SeptemberMexico · 11 kmHigh 21.0°C · Low 12.0°C · 96 mm rain
- Texcoco de Mora in SeptemberMexico · 13 kmHigh 21.0°C · Low 12.1°C · 151 mm rain
- Ecatepec de Morelos in SeptemberMexico · 13 kmHigh 20.1°C · Low 11.4°C · 151 mm rain
- San Pablo de las Salinas in SeptemberMexico · 18 kmHigh 20.7°C · Low 11.7°C · 96 mm rain
- Chicoloapan in SeptemberMexico · 22 kmHigh 21.0°C · Low 12.3°C · 151 mm rain
- Gustavo Adolfo Madero in SeptemberMexico · 23 kmHigh 20.3°C · Low 11.7°C · 151 mm rain
- Ciudad Nezahualcoyotl in SeptemberMexico · 25 kmHigh 20.8°C · Low 12.1°C · 151 mm rain
- Cuautitlán in SeptemberMexico · 26 kmHigh 20.5°C · Low 11.7°C · 125 mm rain
Read the numbers correctly
Climate, not a promise.
These patterns help compare months. They cannot tell you the weather on a specific day of your trip.
Sources, method and limitsHow these numbers are made (what the highs, lows and rain days mean, the sources and the model cell used for Tepexpan) is explained once on the Tepexpan year overview and on the Sources, method and limits page.
Ecatepec de Morelos, Gustavo Adolfo Madero and Ciudad Nezahualcoyotl lie in the same rainfall cell, so their rainfall figures are identical to these; temperatures differ because they come from smaller 0.1° cells.