What is the hottest month in Roswell?

July is the warmest month in Roswell, with an average high of 93.9°F.

What is the coldest month in Roswell?

January is the coldest month in Roswell, with an average low of 22.6°F.

What month does Roswell get the most rain?

July is typically the wettest month in Roswell, with about 1.95 inches of precipitation.

What plant hardiness zone is Roswell in?

Roswell is approximately in USDA plant hardiness Zone 7b, based on the average annual extreme minimum temperature.

Roswell, NM

Climate overview — based on NOAA 1991-2020 normals from ROSWELL CLIMAT, NM US.

BSk Semi-arid (cold) climate 7b USDA hardiness Zone 7b

Year-round temperatures (°F)

Avg high Avg low

Climate summary

Roswell has an annual average temperature of 59.4°F with about 11.6 inches of precipitation per year and 9.8 inches of snow. The warmest month is July (average high 93.9°F), and the coldest is January (average low 22.6°F). July is typically the wettest month (1.95 in) and February the driest (0.36 in). Snow typically falls from October through March.

Annual swing

40.4°F

warmest to coldest month

Heating need

3,453

HDD/yr

Cooling need

1,434

CDD/yr

Best time to visit Roswell

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Monthly averages

Month	Avg High	Avg Low	Avg Temp	Precipitation	Snow	Rainy days
January	55.9°F	22.6°F	39.3°F	0.43 in	1.9 in	2
February	60.7°F	26.9°F	43.8°F	0.36 in	1.3 in	2
March	69.4°F	34.0°F	51.7°F	0.57 in	0.2 in	2
April	76.4°F	40.7°F	58.5°F	0.67 in	—	2
May	84.5°F	50.2°F	67.3°F	1.03 in	—	3
June	93.6°F	60.9°F	77.3°F	0.74 in	—	3
July	93.9°F	65.6°F	79.7°F	1.95 in	—	6
August	91.7°F	64.5°F	78.1°F	1.61 in	—	6
September	84.4°F	56.5°F	70.4°F	1.60 in	—	6
October	75.9°F	43.9°F	59.9°F	1.45 in	0.5 in	4
November	63.5°F	31.1°F	47.3°F	0.61 in	2.0 in	2
December	55.6°F	23.1°F	39.4°F	0.60 in	3.9 in	3