Frost Dates for COL DU GRAND ST-BERNARD, Switzerland

Elevation: 2459 m

Frost Dates

Last Spring Frost (50%) A 50% chance that the last spring frost has already passed by this date. Most gardeners use this as their primary planting guide. June 22
First Fall Frost (50%) A 50% chance that the first fall frost has occurred by this date. Plan to harvest or protect tender plants before this date. July 23

30% Probability

Only a 30% chance of frost remaining by this date. Use these dates for a safer planting window, especially for tender plants sensitive to cold.
Last Spring Frost June 26
First Fall Frost July 11

Hard Freeze (−2°C)

Last Spring Hard Freeze June 15
First Fall Hard Freeze August 17
45.87°N, 7.17°E © OpenStreetMap

Growing Season

31 Days June 22 to July 23

USDA Hardiness Zone

Hardiness zones indicate which perennial plants can survive winter in your area. For annual vegetables, frost dates and growing season length matter more than hardiness zone.
Zone 5a

Avg. annual minimum: −29 to −26°C

Learn more

Köppen Climate

The Köppen climate classification system categorizes climates based on temperature and precipitation patterns.
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

Avg High Avg Temp Avg Low Light Frost (0°C) Hard Frost (−2°C)
Temperature table
Average monthly temperatures (°C)
Month Avg High Avg Temp Avg Low
January-8°-11°-15°
February-6°-10°-14°
March-3°-7°-11°
April0°-3°-7°
May5°1°-3°
June10°6°1°
July13°8°4°
August13°9°4°
September9°5°0°
October4°0°-4°
November-3°-6°-10°
December-7°-11°-14°

Precipitation

Precipitation table
Average monthly precipitation (millimeters)
MonthPrecipitation
January104
February79
March94
April102
May109
June99
July94
August91
September91
October99
November132
December119

Sunrise / Sunset

Daylight Longest: 15h 32m · Shortest: 8h 28m
Sunrise and sunset table
Sunrise, sunset, and daylight on the 15th of each month (local solar time)
Month Sunrise Sunset Daylight
January7:35 AM4:25 PM8h 51m
February6:56 AM5:04 PM10h 07m
March6:12 AM5:48 PM11h 37m
April5:21 AM6:39 PM13h 19m
May4:38 AM7:22 PM14h 44m
June4:15 AM7:45 PM15h 31m
July4:24 AM7:36 PM15h 12m
August5:01 AM6:59 PM13h 57m
September5:51 AM6:09 PM12h 18m
October6:40 AM5:20 PM10h 40m
November7:24 AM4:36 PM9h 12m
December7:46 AM4:14 PM8h 29m

Nearby Stations

SION 2, Switzerland April 19 - October 25 PIAN ROSA (MTN TOP), Italy June 29 - July 5 GENEVE OBSERVATOIRE, Switzerland April 5 - November 11 GENEVE COINTRIN, Switzerland April 1 - November 14 PAYERNE, Switzerland April 14 - November 9 LUGANO, Switzerland March 12 - December 1

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