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Monthly climate in Los Alamos, New Mexico, United States

Last updated: March 2, 2024

Under the Köppen–Geiger climate classification Los Alamos features a humid continental climate (Dfb). Temperatures typically range between -3 °C (28 °F) and 21 °C (70 °F) through the year, but rarely can drop to -25 °C (-13 °F) or can rise to as high as 36 °C (97 °F). The average annual precipitation amounts to about 496 mm (19.5 inches) and receives 85 rainy days on the 1 mm (0.04 inches) threshold annually. Los Alamos enjoys an average of 3608 hours of sunshine throughout the year, and daylight varies from 9 hours 44 minutes to 14 hours 33 minutes per day.

Monthly average temperatures in Los Alamos, New Mexico, United States §

The warmest months in Los Alamos are June, July and August, with daily mean temperatures ranging from 20 to 21 °C (67 - 70 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from -3 to -1 °C (28 - 30 °F) throughout the day. On average each year, Los Alamos experiences 89 days above 25 °C (77.0 °F) and 146 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, New Mexico, United States. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to June 2022.
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Maximum 14°C
(57°F)		 18°C
(64°F)		 22°C
(72°F)		 26°C
(78°F)		 29°C
(85°F)		 35°C
(95°F)		 36°C
(97°F)		 32°C
(90°F)		 32°C
(90°F)		 26°C
(79°F)		 21°C
(70°F)		 17°C
(62°F)
Mean maximum 10°C
(50°F)		 12°C
(55°F)		 20°C
(68°F)		 24°C
(75°F)		 27°C
(81°F)		 32°C
(89°F)		 34°C
(93°F)		 31°C
(88°F)		 30°C
(87°F)		 24°C
(76°F)		 19°C
(66°F)		 13°C
(56°F)
Average high 5°C
(41°F)		 6°C
(43°F)		 12°C
(54°F)		 17°C
(63°F)		 22°C
(72°F)		 28°C
(82°F)		 28°C
(83°F)		 28°C
(82°F)		 25°C
(77°F)		 18°C
(64°F)		 12°C
(54°F)		 6°C
(44°F)
Daily mean -3°C
(28°F)		 -1°C
(30°F)		 4°C
(40°F)		 9°C
(49°F)		 14°C
(58°F)		 20°C
(67°F)		 21°C
(70°F)		 20°C
(68°F)		 17°C
(62°F)		 10°C
(50°F)		 4°C
(39°F)		 -1°C
(30°F)
Average low -8°C
(17°F)		 -8°C
(18°F)		 -3°C
(28°F)		 1°C
(34°F)		 5°C
(42°F)		 10°C
(51°F)		 13°C
(56°F)		 12°C
(54°F)		 9°C
(48°F)		 2°C
(37°F)		 -3°C
(27°F)		 -7°C
(20°F)
Mean minimum -17°C
(1°F)		 -17°C
(1°F)		 -9°C
(15°F)		 -6°C
(22°F)		 -1°C
(31°F)		 5°C
(41°F)		 9°C
(49°F)		 9°C
(48°F)		 3°C
(38°F)		 -5°C
(24°F)		 -10°C
(14°F)		 -15°C
(6°F)
Minimum -21°C
(-5°F)		 -25°C
(-13°F)		 -12°C
(11°F)		 -9°C
(16°F)		 -7°C
(20°F)		 3°C
(37°F)		 8°C
(46°F)		 8°C
(47°F)		 1°C
(34°F)		 -8°C
(17°F)		 -19°C
(-1°F)		 -23°C
(-9°F)

Compare climate in Los Alamos with other places

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

Monthly average precipitation in Los Alamos, New Mexico, United States §

Los Alamos usually has the most precipitation in July, August and October, with an average of 10 rainy days and 66 mm (2.6 inches) of precipitation per month. The driest months in Los Alamos are April, May and December. On average, 28 mm (1.1 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Los Alamos, New Mexico, United States. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to January 2022.
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Average precipitation mm (inches) 30 (1.2) 31 (1.2) 39 (1.5) 30 (1.2) 30 (1.2) 32 (1.3) 76 (3.0) 65 (2.6) 51 (2.0) 57 (2.2) 32 (1.3) 23 (0.9)
Average precipitation days (≥ 1 mm) 6 6 8 6 6 7 13 12 7 6 4 4

Monthly sunshine hours in Los Alamos, New Mexico, United States §

The sunniest months in Los Alamos are May, June and July, when the sun shines an average of 12 hours 0 minutes a day. Least sunny months in Los Alamos: January, February and December receive an average of 7 hours 25 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Los Alamos, New Mexico, United States. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2017 to January 2022.
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Mean monthly sunshine hours 188 244 295 324 362 370 371 352 312 285 259 242
Mean daily daylight hours 10h 0m 10h 52m 11h 59m 13h 7m 14h 5m 14h 33m 14h 18m 13h 27m 12h 21m 11h 13m 10h 13m 9h 44m

Solar UV radiation in Los Alamos, New Mexico, United States §

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 - 13, 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 6. For more detailed information, check out our hourly Los Alamos UV Index data.

Average daily maximum UV levels by month for Los Alamos, New Mexico, United States. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2022 to January 2023.
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
UV Index (month maximum) 5 8 10 11 12 13 13 12 11 8 6 4

Detailed Monthly Weather Insights for Los Alamos, New Mexico, United States

Discover in-depth weather details for every month in Los Alamos. Click through the links below for comprehensive overviews of temperature trends, precipitation levels, sunshine hours, and solar UV radiation specifics. Whether planning a visit or simply curious about Los Alamos's climate nuances, these monthly breakdowns provide the information you need for an informed understanding of what to expect throughout the year.

Each link leads to a detailed account of the typical weather conditions for that month, providing both locals and tourists with vital information to plan their daily activities, wardrobe, and travel itineraries accordingly.