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Monthly climate in Los Alamos, Mexico

Last updated: July 31, 2025

Under the Köppen–Geiger climate classification Los Alamos features a hot semi-arid climate (BSh). Temperatures typically range between 13 °C (55 °F) and 31 °C (87 °F) through the year, but rarely can drop to -11 °C (13 °F) or can rise to as high as 42 °C (108 °F). The average annual precipitation amounts to about 499 mm (19.7 inches) and receives 66 rainy days on the 1 mm (0.04 inches) threshold annually. Los Alamos enjoys an average of 3376 hours of sunshine throughout the year, and daylight varies from 10 hours 21 minutes to 13 hours 54 minutes per day.

Monthly average temperatures in Los Alamos, Mexico

The warmest months in Los Alamos are June, July and August, with daily mean temperatures ranging from 29 to 31 °C (85 - 87 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from 13 to 15 °C (55 - 60 °F) throughout the day. On average each year, Los Alamos experiences 230 days above 25 °C (77.0 °F) and 3 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Los Alamos. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to June 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Maximum35°C
(96°F)		37°C
(98°F)		36°C
(97°F)		41°C
(105°F)		42°C
(108°F)		42°C
(107°F)		42°C
(108°F)		41°C
(105°F)		41°C
(106°F)		38°C
(101°F)		32°C
(89°F)		34°C
(93°F)
Mean maximum29°C
(84°F)		33°C
(91°F)		34°C
(94°F)		39°C
(102°F)		39°C
(103°F)		40°C
(104°F)		40°C
(104°F)		39°C
(103°F)		39°C
(102°F)		35°C
(96°F)		31°C
(88°F)		30°C
(86°F)
Average high19°C
(67°F)		22°C
(72°F)		26°C
(80°F)		30°C
(86°F)		33°C
(92°F)		35°C
(96°F)		36°C
(97°F)		36°C
(98°F)		33°C
(91°F)		28°C
(83°F)		23°C
(74°F)		21°C
(70°F)
Daily mean13°C
(55°F)		15°C
(60°F)		20°C
(69°F)		24°C
(75°F)		27°C
(81°F)		29°C
(85°F)		30°C
(87°F)		31°C
(87°F)		27°C
(82°F)		23°C
(73°F)		17°C
(63°F)		14°C
(58°F)
Average low7°C
(45°F)		9°C
(49°F)		14°C
(58°F)		18°C
(64°F)		22°C
(71°F)		24°C
(76°F)		25°C
(77°F)		25°C
(78°F)		23°C
(73°F)		18°C
(64°F)		12°C
(54°F)		9°C
(48°F)
Mean minimum-1°C
(30°F)		-1°C
(31°F)		6°C
(44°F)		10°C
(50°F)		16°C
(61°F)		21°C
(70°F)		22°C
(71°F)		22°C
(73°F)		18°C
(64°F)		6°C
(43°F)		4°C
(40°F)		1°C
(35°F)
Minimum-6°C
(22°F)		-11°C
(13°F)		1°C
(33°F)		7°C
(46°F)		12°C
(54°F)		19°C
(66°F)		20°C
(69°F)		20°C
(68°F)		13°C
(55°F)		3°C
(37°F)		-0°C
(31°F)		-1°C
(31°F)

Compare climate in Los Alamos with other places

Compare temperature, precipitation, sunshine, UV index in Los Alamos, Mexico with other places around the world.

Monthly average precipitation in Los Alamos, Mexico

Los Alamos usually has the most precipitation in May, September and October, with an average of 9 rainy days and 87 mm (3.4 inches) of precipitation per month. The driest months in Los Alamos are January, February and November. On average, 14 mm (0.5 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Los Alamos. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Average precipitation mm (inches)12 (0.5)13 (0.5)19 (0.7)30 (1.2)96 (3.8)42 (1.6)54 (2.1)36 (1.4)110 (4.3)54 (2.1)16 (0.6)17 (0.7)
Average precipitation days (≥ 1 mm)32351178410733

Monthly sunshine hours in Los Alamos, Mexico

The sunniest months in Los Alamos are June, July and August, when the sun shines an average of 11 hours 14 minutes a day. Least sunny months in Los Alamos: January, February and November receive an average of 7 hours 30 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Los Alamos. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Mean monthly sunshine hours197233269286310336353343283265244251
Mean daily daylight hours10h 33m11h 11m12h 0m12h 51m13h 33m13h 54m13h 42m13h 5m12h 16m11h 26m10h 43m10h 21m

Solar UV radiation in Los Alamos, Mexico

Los Alamos experiences the highest level of ultraviolet (UV) radiation in June, July and August, when the maximum UV index can reach values of 12 - 12, which corresponds to the Extreme category of sun exposure. January, November and December are in the Moderate / High exposure category. In these months, the maximum values of the UV index do not exceed 7. For more detailed information, check out our hourly Los Alamos UV Index data.

Average daily maximum UV levels by month for Los Alamos. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2022 to January 2023.
 JanFebMarAprMayJunJulAugSepOctNovDec
UV Index (month maximum)6810111112121211975