What is the hottest month in Lima?

July is the warmest month in Lima, with an average high of 82.6°F.

What is the coldest month in Lima?

January is the coldest month in Lima, with an average low of 11.0°F.

What month does Lima get the most rain?

June is typically the wettest month in Lima, with about 1.99 inches of precipitation.

What plant hardiness zone is Lima in?

Lima is approximately in USDA plant hardiness Zone 6b, based on the average annual extreme minimum temperature.

Has the climate in Lima changed recently?

15% of Lima's all-time daily heat records were set in the last decade (since 2015), compared to roughly 5% if records were evenly distributed over time.

Lima, MT

Climate overview — based on NOAA 1991-2020 normals from LIMA, MT US.

BSk Semi-arid (cold) climate 6b USDA hardiness Zone 6b

Year-round temperatures (°F)

Avg high Avg low

Climate summary

Lima has an annual average temperature of 41.5°F with about 10.4 inches of precipitation per year and 52.6 inches of snow. The warmest month is July (average high 82.6°F), and the coldest is January (average low 11.0°F). June is typically the wettest month (1.99 in) and January the driest (0.24 in). Snow typically falls from January through December.

Annual swing

44.4°F

warmest to coldest month

Heating need

8,469

HDD/yr

Cooling need

CDD/yr

Best time to visit Lima

Full guide →

Climate change signal

All-time records →

55 of 366 (15%) of Lima's all-time daily heat records have been set since 2015. If records were spread evenly across the station's history, only about 5% would fall in any given decade.

1890s		1
1900s		19
1910s		26
1920s		5
1930s		54
1940s		34
1950s		34
1960s		26
1970s		19
1980s		25
1990s		24
2000s		35
2010s		24
2020s		40

Bars: number of all-time daily heat records still standing that were set in each decade.

Monthly averages

Month	Avg High	Avg Low	Avg Temp	Precipitation	Snow	Rainy days
January	30.2°F	11.0°F	20.6°F	0.24 in	6.0 in	4
February	33.7°F	11.9°F	22.8°F	0.25 in	5.1 in	4
March	43.7°F	20.7°F	32.2°F	0.40 in	6.8 in	5
April	52.7°F	27.0°F	39.9°F	0.93 in	10.1 in	7
May	62.2°F	35.3°F	48.7°F	1.66 in	4.7 in	9
June	71.6°F	41.8°F	56.7°F	1.99 in	1.1 in	9
July	82.6°F	47.3°F	64.9°F	1.27 in	—	7
August	81.3°F	45.7°F	63.5°F	1.02 in	—	6
September	71.3°F	38.7°F	55.0°F	0.92 in	0.6 in	5
October	56.4°F	29.2°F	42.8°F	0.98 in	6.7 in	5
November	40.9°F	19.2°F	30.1°F	0.41 in	5.8 in	3
December	29.7°F	11.3°F	20.5°F	0.28 in	5.7 in	4