What is the hottest month in Holyoke?

July is the warmest month in Holyoke, with an average high of 88.0°F.

What is the coldest month in Holyoke?

January is the coldest month in Holyoke, with an average low of 12.7°F.

What month does Holyoke get the most rain?

May is typically the wettest month in Holyoke, with about 2.83 inches of precipitation.

What plant hardiness zone is Holyoke in?

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

Has the climate in Holyoke changed recently?

11.5% of Holyoke'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.

Holyoke, CO

Climate overview — based on NOAA 1991-2020 normals from HOLYOKE, CO US.

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

Year-round temperatures (°F)

Avg high Avg low

Climate summary

Holyoke has an annual average temperature of 48.9°F with about 17.9 inches of precipitation per year and 30.4 inches of snow. The warmest month is July (average high 88.0°F), and the coldest is January (average low 12.7°F). May is typically the wettest month (2.83 in) and January the driest (0.32 in). Snow typically falls from September through May.

Annual swing

46.1°F

warmest to coldest month

Heating need

6,321

HDD/yr

Cooling need

516

CDD/yr

Best time to visit Holyoke

Full guide →

Climate change signal

All-time records →

42 of 366 (11.5%) of Holyoke'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		16
1900s		30
1910s		19
1920s		10
1930s		45
1940s		23
1950s		42
1960s		46
1970s		21
1980s		13
1990s		26
2000s		20
2010s		23
2020s		32

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	41.6°F	12.7°F	27.2°F	0.32 in	4.5 in	3
February	44.2°F	14.5°F	29.4°F	0.51 in	6.1 in	5
March	54.1°F	22.7°F	38.4°F	0.86 in	4.4 in	6
April	61.8°F	31.1°F	46.4°F	1.92 in	3.7 in	9
May	70.9°F	42.5°F	56.7°F	2.83 in	0.2 in	11
June	82.5°F	53.1°F	67.8°F	2.76 in	—	9
July	88.0°F	58.6°F	73.3°F	2.75 in	—	9
August	86.2°F	56.0°F	71.1°F	2.39 in	—	8
September	78.6°F	46.6°F	62.6°F	1.40 in	0.2 in	6
October	65.2°F	32.9°F	49.0°F	1.23 in	1.9 in	6
November	52.5°F	21.4°F	37.0°F	0.52 in	3.9 in	4
December	42.3°F	13.0°F	27.6°F	0.44 in	5.5 in	4