What is the hottest month in Rockvale?

July is the warmest month in Rockvale, with an average high of 89.2°F.

What is the coldest month in Rockvale?

January is the coldest month in Rockvale, with an average low of 18.4°F.

What month does Rockvale get the most rain?

July is typically the wettest month in Rockvale, with about 2.25 inches of precipitation.

What plant hardiness zone is Rockvale in?

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

Has the climate in Rockvale changed recently?

11.7% of Rockvale'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.

Rockvale, CO

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

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

Year-round temperatures (°F)

Avg high Avg low

Climate summary

Rockvale has an annual average temperature of 52.1°F with about 13.7 inches of precipitation per year and 38.3 inches of snow. The warmest month is July (average high 89.2°F), and the coldest is January (average low 18.4°F). July is typically the wettest month (2.25 in) and December the driest (0.46 in). Snow typically falls from September through May.

Annual swing

40.1°F

warmest to coldest month

Heating need

5,238

HDD/yr

Cooling need

579

CDD/yr

Best time to visit Rockvale

Full guide →

Climate change signal

All-time records →

43 of 366 (11.7%) of Rockvale'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		36
1900s		25
1910s		34
1920s		46
1930s		39
1940s		17
1950s		11
1960s		6
1970s		11
1980s		28
1990s		15
2000s		46
2010s		22
2020s		30

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	49.4°F	18.4°F	33.9°F	0.55 in	6.7 in	4
February	50.4°F	19.7°F	35.0°F	0.57 in	6.2 in	5
March	58.5°F	26.1°F	42.3°F	1.04 in	6.0 in	6
April	64.3°F	33.2°F	48.8°F	1.76 in	4.1 in	7
May	73.3°F	43.0°F	58.2°F	1.56 in	0.5 in	8
June	84.6°F	52.2°F	68.4°F	0.85 in	—	7
July	89.2°F	58.7°F	73.9°F	2.25 in	—	12
August	86.7°F	57.2°F	72.0°F	2.06 in	—	12
September	80.1°F	48.4°F	64.2°F	1.20 in	0.2 in	7
October	68.6°F	36.1°F	52.4°F	0.87 in	3.3 in	5
November	57.2°F	26.3°F	41.8°F	0.55 in	5.1 in	5
December	49.0°F	18.7°F	33.8°F	0.46 in	6.2 in	4