Frost Dates for Silverton, CO

Elevation: 2830 m

Frost Dates

This location has year-round freezing temperatures.

37.81°N, 107.66°W © OpenStreetMap

USDA Hardiness Zone

Zone 4b

Avg. annual minimum: −25 to −20°F

Learn more

Köppen Climate

Dfc Subarctic

Short, cool summers and long, very cold winters. Growing seasons of 3–4 months require fast-maturing varieties. Root vegetables, potatoes, and cold-hardy greens are the most reliable.

Köppen climate map

Temperature

-10° 20° 50° 80°

14°

Jan

17°

Feb

24°

Mar

33°

Apr

42°

May

51°

Jun

57°

Jul

55°

Aug

48°

Sep

38°

Oct

25°

Nov

14°

Dec

32°F

28°F

Avg High Avg Temp Avg Low Light Frost (32°F) Hard Frost (28°F)

Temperature table

Average monthly temperatures (°F)
Month	Avg High	Avg Temp	Avg Low
January	34°	14°	-6°
February	36°	17°	-3°
March	43°	24°	6°
April	48°	33°	17°
May	58°	42°	25°
June	70°	51°	31°
July	75°	57°	38°
August	72°	55°	37°
September	66°	48°	30°
October	55°	38°	20°
November	43°	25°	7°
December	34°	14°	-5°

Precipitation

0" 2" 4" 4.6"

4.0"

Jan

3.8"

Feb

4.6"

Mar

3.5"

Apr

3.1"

May

2.5"

Jun

3.1"

Jul

3.4"

Aug

4.6"

Sep

4.2"

Oct

3.9"

Nov

4.3"

Dec

Precipitation table

Average monthly precipitation (inches)
Month	Precipitation
January	4.0
February	3.8
March	4.6
April	3.5
May	3.1
June	2.5
July	3.1
August	3.4
September	4.6
October	4.2
November	3.9
December	4.3

Sunrise / Sunset

Jan: 7:10 AM – 4:50 PM · 9h 39m

Feb: 6:42 AM – 5:18 PM · 10h 36m

Mar: 6:09 AM – 5:51 PM · 11h 42m

Apr: 5:30 AM – 6:30 PM · 12h 59m

May: 4:59 AM – 7:01 PM · 14h 02m

Jun: 4:42 AM – 7:18 PM · 14h 36m

Jul: 4:49 AM – 7:11 PM · 14h 23m

Aug: 5:16 AM – 6:44 PM · 13h 28m

Sep: 5:53 AM – 6:07 PM · 12h 14m

Oct: 6:30 AM – 5:30 PM · 10h 60m

Nov: 7:03 AM – 4:57 PM · 9h 55m

Dec: 7:18 AM – 4:42 PM · 9h 24m

Daylight Longest: 14h 37m · Shortest: 9h 23m

Sunrise and sunset table

Sunrise, sunset, and daylight on the 15th of each month (local solar time)
Month	Sunrise	Sunset	Daylight
January	7:10 AM	4:50 PM	9h 39m
February	6:42 AM	5:18 PM	10h 36m
March	6:09 AM	5:51 PM	11h 42m
April	5:30 AM	6:30 PM	12h 59m
May	4:59 AM	7:01 PM	14h 02m
June	4:42 AM	7:18 PM	14h 36m
July	4:49 AM	7:11 PM	14h 23m
August	5:16 AM	6:44 PM	13h 28m
September	5:53 AM	6:07 PM	12h 14m
October	6:30 AM	5:30 PM	10h 60m
November	7:03 AM	4:57 PM	9h 55m
December	7:18 AM	4:42 PM	9h 24m

Nearby Stations

Ouray, COMay 17 - October 1 Telluride 4wnw, CO Ouray #2, COMay 18 - October 4 Rio Grande Rsvr, CO June 15 - September 11 Ridgway, COJune 11 - September 13 Lake City, CO June 8 - September 17

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