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Monthly climate in Roswell, New Mexico, United States

Last updated: May 6, 2024

Under the Köppen–Geiger climate classification Roswell features a cold semi-arid climate (BSk).Temperatures typically range between 6 °C (43 °F) and 29 °C (84 °F) through the year, but rarely can drop to -16 °C (4 °F) or can rise to as high as 43 °C (109 °F).The average annual precipitation amounts to about 271 mm (10.7 inches) and receives 47 rainy days on the 1 mm (0.04 inches) threshold annually.Roswell enjoys an average of 3599 hours of sunshine throughout the year, and daylight varies from 9 hours 57 minutes to 14 hours 18 minutes per day.

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

The warmest months in Roswell are June, July and August, with daily mean temperatures ranging from 27 to 29 °C (81 - 84 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from 6 to 8 °C (43 - 47 °F) throughout the day. On average each year, Roswell experiences 171 days above 25 °C (77.0 °F) and 46 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Roswell, 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 26°C
(80°F)		 31°C
(88°F)		 32°C
(89°F)		 35°C
(95°F)		 39°C
(102°F)		 43°C
(109°F)		 43°C
(109°F)		 42°C
(108°F)		 38°C
(101°F)		 36°C
(96°F)		 31°C
(88°F)		 25°C
(78°F)
Mean maximum 23°C
(73°F)		 26°C
(79°F)		 31°C
(88°F)		 34°C
(93°F)		 37°C
(99°F)		 40°C
(105°F)		 39°C
(103°F)		 39°C
(102°F)		 36°C
(98°F)		 33°C
(92°F)		 28°C
(82°F)		 22°C
(73°F)
Average high 13°C
(56°F)		 17°C
(62°F)		 21°C
(71°F)		 26°C
(79°F)		 31°C
(88°F)		 35°C
(95°F)		 35°C
(95°F)		 34°C
(93°F)		 31°C
(87°F)		 24°C
(76°F)		 19°C
(66°F)		 14°C
(58°F)
Daily mean 6°C
(43°F)		 8°C
(47°F)		 13°C
(56°F)		 18°C
(64°F)		 23°C
(74°F)		 28°C
(82°F)		 29°C
(84°F)		 27°C
(81°F)		 24°C
(75°F)		 17°C
(63°F)		 11°C
(52°F)		 7°C
(45°F)
Average low -0°C
(32°F)		 1°C
(34°F)		 6°C
(43°F)		 10°C
(50°F)		 15°C
(59°F)		 20°C
(68°F)		 22°C
(72°F)		 21°C
(70°F)		 17°C
(63°F)		 10°C
(50°F)		 4°C
(40°F)		 1°C
(33°F)
Mean minimum -8°C
(18°F)		 -8°C
(18°F)		 -2°C
(29°F)		 2°C
(36°F)		 7°C
(46°F)		 15°C
(59°F)		 20°C
(68°F)		 18°C
(65°F)		 12°C
(53°F)		 -0°C
(32°F)		 -3°C
(27°F)		 -6°C
(22°F)
Minimum -12°C
(11°F)		 -16°C
(4°F)		 -6°C
(21°F)		 1°C
(34°F)		 2°C
(36°F)		 12°C
(55°F)		 18°C
(65°F)		 16°C
(61°F)		 6°C
(42°F)		 -6°C
(22°F)		 -6°C
(22°F)		 -9°C
(16°F)

Compare climate in Roswell with other places

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

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

Roswell usually has the most precipitation in August, September and October, with an average of 6 rainy days and 43 mm (1.7 inches) of precipitation per month.The driest months in Roswell are February, November and December. On average, 9 mm (0.4 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Roswell, 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) 11 (0.4) 11 (0.4) 20 (0.8) 17 (0.7) 14 (0.5) 30 (1.2) 23 (0.9) 53 (2.1) 39 (1.5) 36 (1.4) 9 (0.3) 8 (0.3)
Average precipitation days (≥ 1 mm) 2 2 3 2 3 5 7 8 6 5 2 2

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

The sunniest months in Roswell are May, June and July, when the sun shines an average of 11 hours 49 minutes a day.Least sunny months in Roswell: January, February and November receive an average of 7 hours 51 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Roswell, 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 205 247 290 322 360 356 370 341 302 286 254 260
Mean daily daylight hours 10h 12m 10h 59m 11h 59m 13h 1m 13h 53m 14h 18m 14h 4m 13h 19m 12h 19m 11h 18m 10h 24m 9h 57m

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

Roswell 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 Roswell UV Index data.

Average daily maximum UV levels by month for Roswell, 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