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Monthly climate in Portales, New Mexico, United States

Last updated: May 6, 2024

Under the Köppen–Geiger climate classification Portales features a cold semi-arid climate (BSk).Temperatures typically range between 4 °C (40 °F) and 27 °C (80 °F) through the year, but rarely can drop to -20 °C (-3 °F) or can rise to as high as 42 °C (107 °F).The average annual precipitation amounts to about 338 mm (13.3 inches) and receives 54 rainy days on the 1 mm (0.04 inches) threshold annually.Portales enjoys an average of 3560 hours of sunshine throughout the year, and daylight varies from 9 hours 53 minutes to 14 hours 23 minutes per day.

Monthly average temperatures in Portales, New Mexico, United States §

The warmest months in Portales are June, July and August, with daily mean temperatures ranging from 25 to 27 °C (78 - 80 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from 4 to 6 °C (40 - 43 °F) throughout the day. On average each year, Portales experiences 151 days above 25 °C (77.0 °F) and 65 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Portales, 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 23°C
(74°F)		 29°C
(84°F)		 31°C
(89°F)		 33°C
(91°F)		 37°C
(100°F)		 41°C
(106°F)		 42°C
(107°F)		 39°C
(102°F)		 37°C
(99°F)		 34°C
(93°F)		 29°C
(84°F)		 23°C
(74°F)
Mean maximum 21°C
(70°F)		 24°C
(76°F)		 29°C
(84°F)		 32°C
(89°F)		 35°C
(95°F)		 38°C
(101°F)		 38°C
(100°F)		 37°C
(98°F)		 35°C
(95°F)		 31°C
(88°F)		 26°C
(79°F)		 21°C
(70°F)
Average high 12°C
(54°F)		 14°C
(58°F)		 19°C
(67°F)		 23°C
(74°F)		 29°C
(84°F)		 33°C
(91°F)		 33°C
(92°F)		 32°C
(90°F)		 29°C
(84°F)		 22°C
(72°F)		 18°C
(64°F)		 13°C
(56°F)
Daily mean 4°C
(40°F)		 6°C
(43°F)		 11°C
(53°F)		 15°C
(60°F)		 21°C
(70°F)		 25°C
(78°F)		 27°C
(80°F)		 26°C
(78°F)		 22°C
(72°F)		 15°C
(59°F)		 10°C
(50°F)		 6°C
(43°F)
Average low -2°C
(29°F)		 -1°C
(31°F)		 4°C
(40°F)		 7°C
(45°F)		 13°C
(56°F)		 18°C
(65°F)		 20°C
(68°F)		 19°C
(67°F)		 15°C
(60°F)		 8°C
(47°F)		 3°C
(38°F)		 -0°C
(32°F)
Mean minimum -10°C
(15°F)		 -11°C
(13°F)		 -4°C
(25°F)		 -1°C
(30°F)		 5°C
(42°F)		 13°C
(56°F)		 17°C
(63°F)		 16°C
(61°F)		 9°C
(49°F)		 -2°C
(28°F)		 -4°C
(24°F)		 -7°C
(20°F)
Minimum -14°C
(7°F)		 -20°C
(-3°F)		 -10°C
(15°F)		 -2°C
(28°F)		 1°C
(34°F)		 11°C
(52°F)		 16°C
(61°F)		 14°C
(58°F)		 2°C
(37°F)		 -7°C
(20°F)		 -8°C
(17°F)		 -8°C
(18°F)

Compare climate in Portales with other places

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

Monthly average precipitation in Portales, New Mexico, United States §

Portales usually has the most precipitation in June, August and October, with an average of 6 rainy days and 48 mm (1.9 inches) of precipitation per month.The driest months in Portales are February, November and December. On average, 10 mm (0.4 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Portales, 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) 19 (0.7) 12 (0.5) 28 (1.1) 19 (0.7) 33 (1.3) 45 (1.8) 28 (1.1) 47 (1.9) 36 (1.4) 54 (2.1) 11 (0.4) 7 (0.3)
Average precipitation days (≥ 1 mm) 2 2 4 3 7 6 6 7 6 6 3 2

Monthly sunshine hours in Portales, New Mexico, United States §

The sunniest months in Portales are May, June and July, when the sun shines an average of 11 hours 46 minutes a day.Least sunny months in Portales: January, February and November receive an average of 7 hours 46 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Portales, 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 202 242 282 315 352 357 373 343 302 275 255 257
Mean daily daylight hours 10h 9m 10h 57m 11h 59m 13h 3m 13h 57m 14h 23m 14h 8m 13h 21m 12h 20m 11h 16m 10h 21m 9h 53m

Solar UV radiation in Portales, New Mexico, United States §

Portales experiences the highest level of ultraviolet (UV) radiation in May, 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 6. For more detailed information, check out our hourly Portales UV Index data.

Average daily maximum UV levels by month for Portales, 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 7 9 11 12 12 12 12 10 8 6 4