Climate averages 1991–2020
Las Cruces weather
in September.
A hot, fairly dry month: the 4th warmest and the 11th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
September is a hot month in Las Cruces: daytime highs average 30.9°C and nights cool to about 18.0°C. By daytime temperature it is the 4th warmest of the 12 months.
Expect about 29 mm of rain on roughly 4 days, which makes September a fairly dry month (the 11th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 12 h 24 min on an average September day.
The nearest other city in this atlas is El Paso (67 km away). In September its highs average 30.7°C, about as warm as Las Cruces, with 31 mm of rain.
Among the 498 cities listed in the United States, Las Cruces ranks joint 63rd of 498 for the warmest September highs and joint 141st of 498 for the driest September (rainfall, lowest first). The mean September high of those 498 cities is 26.9°C; Las Cruces is 4.0°C warmer than that mean.
From September to October, average highs fall by 5.4°C to 25.5°C, and monthly rainfall falls from 29 mm to 20 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
Las Cruces climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 13.8°C1.1°C | 1.1°C | 14 | 3.0 | 10.310 h |
| February | 17.0°C3.4°C | 3.4°C | 13 | 2.9 | 11.011 h |
| March | 21.5°C6.7°C | 6.7°C | 9.6 | 1.9 | 12.012 h |
| April | 26.0°C10.7°C | 10.7°C | 5.0 | 1.2 | 13.013 h |
| May | 30.8°C15.7°C | 15.7°C | 7.3 | 1.7 | 13.814 h |
| June | 35.8°C20.8°C | 20.8°C | 11 | 2.1 | 14.214 h |
| July | 35.2°C22.2°C | 22.2°C | 32 | 6.9 | 14.014 h |
| August | 34.2°C21.4°C | 21.4°C | 26 | 6.2 | 13.313 h |
| September, selected | 30.9°C18.0°C | 18.0°C | 29 | 3.8 | 12.412 h |
| October | 25.5°C12.2°C | 12.2°C | 20 | 3.1 | 11.411 h |
| November | 18.5°C5.5°C | 5.5°C | 14 | 2.2 | 10.511 h |
| December | 13.3°C1.2°C | 1.2°C | 19 | 3.3 | 10.110 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
- El Paso in SeptemberUnited States · 67 kmHigh 30.7°C · Low 18.3°C · 31 mm rain
- Ciudad Juárez in SeptemberMexico · 72 kmHigh 30.7°C · Low 18.4°C · 31 mm rain
- Agua Prieta in SeptemberMexico · 283 kmHigh 30.8°C · Low 18.3°C · 30 mm rain
- Albuquerque in SeptemberUnited States · 308 kmHigh 27.8°C · Low 15.1°C · 22 mm rain
- Rio Rancho in SeptemberUnited States · 325 kmHigh 27.1°C · Low 14.5°C · 29 mm rain
- Enchanted Hills in SeptemberUnited States · 337 kmHigh 26.9°C · Low 14.3°C · 39 mm rain
- Santa Fe, United States in SeptemberUnited States · 383 kmHigh 23.2°C · Low 11.1°C · 26 mm rain
- Tucson in SeptemberUnited States · 390 kmHigh 34.1°C · Low 21.3°C · 25 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 Las Cruces) is explained once on the Las Cruces year overview and on the Sources, method and limits page.