What is the hottest month in Silverton?

July is the warmest month in Silverton, with an average high of 74.7°F.

What is the coldest month in Silverton?

January is the coldest month in Silverton, with an average low of -5.9°F.

What month does Silverton get the most rain?

August is typically the wettest month in Silverton, with about 2.83 inches of precipitation.

What plant hardiness zone is Silverton in?

Silverton is approximately in USDA plant hardiness Zone 4b, based on the average annual extreme minimum temperature.

Has the climate in Silverton changed recently?

11.7% of Silverton'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.

Silverton, CO

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

Dfc Subarctic climate 4b USDA hardiness Zone 4b

Year-round temperatures (°F)

Avg high Avg low

Climate summary

Silverton has an annual average temperature of 34.7°F with about 23.9 inches of precipitation per year and 172.6 inches of snow. The warmest month is July (average high 74.7°F), and the coldest is January (average low -5.9°F). August is typically the wettest month (2.83 in) and June the driest (0.93 in). Snow typically falls from January through December.

Annual swing

42.2°F

warmest to coldest month

Heating need

10,920

HDD/yr

Cooling need

CDD/yr

Best time to visit Silverton

Full guide →

Climate change signal

All-time records →

43 of 366 (11.7%) of Silverton'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.

1900s		4
1910s		40
1920s		110
1930s		32
1940s		6
1950s		12
1960s		15
1970s		6
1980s		34
1990s		17
2000s		33
2010s		28
2020s		29

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	34.4°F	-5.9°F	14.3°F	2.04 in	30.8 in	9
February	36.3°F	-2.8°F	16.7°F	2.10 in	28.5 in	10
March	42.7°F	6.1°F	24.4°F	2.05 in	29.4 in	10
April	48.2°F	17.0°F	32.6°F	1.74 in	18.2 in	9
May	58.4°F	25.4°F	41.9°F	1.68 in	8.2 in	10
June	70.0°F	31.0°F	50.5°F	0.93 in	0.4 in	6
July	74.7°F	38.3°F	56.5°F	2.38 in	—	13
August	71.9°F	37.0°F	54.4°F	2.83 in	—	16
September	65.6°F	29.7°F	47.7°F	2.75 in	0.5 in	11
October	55.0°F	20.1°F	37.6°F	2.13 in	7.7 in	9
November	43.0°F	7.0°F	25.0°F	1.66 in	21.5 in	8
December	33.5°F	-4.6°F	14.4°F	1.63 in	27.4 in	9