Climate averages 1991–2020

Las Cruces weather
in December.

A cool, fairly dry month: the coolest and the 8th driest of the year.

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

Average high 13.3°C Daytime mean, December
Average low 1.2°C Night-time mean, December
Rainfall 19 mm 3 days with ≥1 mm
Daylight 10 h Sunrise to sunset, per day
Every month in Las Cruces · average highYear overview

December is a cool month in Las Cruces: daytime highs average 13.3°C and nights cool to about 1.2°C. By daytime temperature it is the coolest month of the year.

Expect about 19 mm of rain on roughly 3 days, which makes December a fairly dry month (the 8th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 10 h 04 min on an average December day.

The nearest other city in this atlas is El Paso (67 km away). In December its highs average 13.8°C, about as warm as Las Cruces, with 18 mm of rain.

Among the 498 cities listed in the United States, Las Cruces ranks joint 203rd of 498 for the warmest December highs and joint 14th of 498 for the driest December (rainfall, lowest first). The mean December high of those 498 cities is 10.5°C; Las Cruces is 2.8°C warmer than that mean.

From December to January, average highs rise by 0.5°C to 13.8°C, and monthly rainfall falls from 19 mm to 14 mm.

The annual picture

December 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 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, selected 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

December 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.