Climate averages 1991–2020

Las Cruces weather
in August.

A very hot, fairly dry month: the 3rd warmest and the 10th driest of the year.

Long-term climate patterns, not a forecast for a particular trip.

Average high 34.2°C Daytime mean, August
Average low 21.4°C Night-time mean, August
Rainfall 26 mm 6 days with ≥1 mm
Daylight 13 h Sunrise to sunset, per day
Every month in Las Cruces · average highYear overview

August is a very hot month in Las Cruces: daytime highs average 34.2°C and nights cool to about 21.4°C. By daytime temperature it is the 3rd warmest of the 12 months.

Expect about 26 mm of rain on roughly 6 days, which makes August a fairly dry month (the 10th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 13 h 20 min on an average August day.

The nearest other city in this atlas is El Paso (67 km away). In August its highs average 33.9°C, about as warm as Las Cruces, with 24 mm of rain.

Among the 498 cities listed in the United States, Las Cruces ranks joint 54th of 498 for the warmest August highs and joint 143rd of 498 for the driest August (rainfall, lowest first). The mean August high of those 498 cities is 29.9°C; Las Cruces is 4.3°C warmer than that mean.

From August to September, average highs fall by 3.3°C to 30.9°C, and monthly rainfall rises from 26 mm to 29 mm.

The annual picture

August in context

30-year average
Average highAverage low°C
Average daily high and low temperatures by month The same values are available in the monthly table below. Lines show mean daily maxima and minima, not a forecast interval. -50510152025303540 JanFebMarAprMayJunJulAugSepOctNovDec

Monthly rainfall

Average total · mm
Average monthly rainfall totalsEach bar is a mean monthly total over 1991–2020. Full numbers are in the table. JanFebMarAprMayJunJulAugSepOctNovDec 500

Averages 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

1991–2020
Monthly climate averages for Las Cruces, 1991–2020
MonthAverage highHigh / lowAverage lowRainfall mm/monthRain days ≥1 mm/dayDaylight hours/dayDay­light h/day
January 13.8°C1.1°C1.1°C143.010.310 h
February 17.0°C3.4°C3.4°C132.911.011 h
March 21.5°C6.7°C6.7°C9.61.912.012 h
April 26.0°C10.7°C10.7°C5.01.213.013 h
May 30.8°C15.7°C15.7°C7.31.713.814 h
June 35.8°C20.8°C20.8°C112.114.214 h
July 35.2°C22.2°C22.2°C326.914.014 h
August, selected 34.2°C21.4°C21.4°C266.213.313 h
September 30.9°C18.0°C18.0°C293.812.412 h
October 25.5°C12.2°C12.2°C203.111.411 h
November 18.5°C5.5°C5.5°C142.210.511 h
December 13.3°C1.2°C1.2°C193.310.110 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

August in nearby cities

Distance from Las Cruces

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 limits

How 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.