nomadseason

Monthly climate in San Juan, New Mexico, United States

Last updated: May 6, 2024

Under the Köppen–Geiger climate classification San Juan features a humid continental climate (Dfb).Temperatures typically range between -2 °C (29 °F) and 22 °C (73 °F) through the year, but rarely can drop to -25 °C (-12 °F) or can rise to as high as 36 °C (98 °F).The average annual precipitation amounts to about 279 mm (11.0 inches) and receives 57 rainy days on the 1 mm (0.04 inches) threshold annually.San Juan enjoys an average of 3632 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 San Juan, New Mexico, United States §

The warmest months in San Juan are June, July and August, with daily mean temperatures ranging from 21 to 22 °C (70 - 73 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from -2 to 0 °C (29 - 33 °F) throughout the day. On average each year, San Juan experiences 99 days above 25 °C (77.0 °F) and 127 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in San Juan, 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 15°C
(59°F)		 19°C
(66°F)		 23°C
(73°F)		 26°C
(79°F)		 30°C
(86°F)		 36°C
(97°F)		 36°C
(98°F)		 33°C
(93°F)		 33°C
(92°F)		 27°C
(80°F)		 21°C
(70°F)		 17°C
(62°F)
Mean maximum 11°C
(52°F)		 14°C
(57°F)		 20°C
(69°F)		 24°C
(76°F)		 28°C
(82°F)		 32°C
(90°F)		 35°C
(94°F)		 32°C
(90°F)		 32°C
(89°F)		 25°C
(78°F)		 19°C
(66°F)		 14°C
(57°F)
Average high 6°C
(42°F)		 7°C
(45°F)		 13°C
(56°F)		 18°C
(65°F)		 23°C
(74°F)		 29°C
(84°F)		 29°C
(85°F)		 29°C
(84°F)		 26°C
(78°F)		 18°C
(65°F)		 13°C
(55°F)		 7°C
(45°F)
Daily mean -2°C
(29°F)		 0°C
(33°F)		 6°C
(43°F)		 11°C
(51°F)		 16°C
(60°F)		 21°C
(70°F)		 22°C
(73°F)		 21°C
(71°F)		 18°C
(65°F)		 11°C
(52°F)		 5°C
(41°F)		 0°C
(32°F)
Average low -8°C
(18°F)		 -6°C
(21°F)		 -1°C
(30°F)		 2°C
(37°F)		 7°C
(45°F)		 12°C
(54°F)		 15°C
(59°F)		 14°C
(57°F)		 10°C
(51°F)		 4°C
(39°F)		 -2°C
(29°F)		 -6°C
(22°F)
Mean minimum -18°C
(0°F)		 -17°C
(2°F)		 -8°C
(18°F)		 -4°C
(24°F)		 1°C
(34°F)		 6°C
(44°F)		 11°C
(53°F)		 11°C
(52°F)		 4°C
(40°F)		 -3°C
(26°F)		 -10°C
(14°F)		 -15°C
(5°F)
Minimum -21°C
(-6°F)		 -25°C
(-12°F)		 -10°C
(14°F)		 -6°C
(21°F)		 -3°C
(27°F)		 4°C
(39°F)		 9°C
(49°F)		 10°C
(51°F)		 2°C
(35°F)		 -7°C
(20°F)		 -19°C
(-3°F)		 -23°C
(-8°F)

Compare climate in San Juan with other places

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

Monthly average precipitation in San Juan, New Mexico, United States §

San Juan usually has the most precipitation in July, September and October, with an average of 5 rainy days and 29 mm (1.1 inches) of precipitation per month.The driest months in San Juan are May, June and December. On average, 17 mm (0.7 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in San Juan, 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) 24 (0.9) 24 (0.9) 24 (1.0) 22 (0.9) 18 (0.7) 15 (0.6) 34 (1.3) 23 (0.9) 27 (1.0) 27 (1.1) 23 (0.9) 19 (0.7)
Average precipitation days (≥ 1 mm) 5 5 6 4 4 3 9 6 3 4 4 4

Monthly sunshine hours in San Juan, New Mexico, United States §

The sunniest months in San Juan are May, June and July, when the sun shines an average of 12 hours 0 minutes a day.Least sunny months in San Juan: January, February and December receive an average of 7 hours 36 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in San Juan, 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 192 250 298 326 363 369 371 351 311 284 263 248
Mean daily daylight hours 10h 0m 10h 52m 11h 59m 13h 7m 14h 5m 14h 33m 14h 17m 13h 26m 12h 21m 11h 13m 10h 14m 9h 44m

Solar UV radiation in San Juan, New Mexico, United States §

San Juan 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 San Juan UV Index data.

Average daily maximum UV levels by month for San Juan, 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