Frost Dates for COL DU GRAND ST-BERNARD, Switzerland

Elevation: 2459 m

Frost Dates

Last Spring Frost (50%) iA 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%) iA 50% chance that the first fall frost has occurred by this date. Plan to harvest or protect tender plants before this date. July 23
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

30% Probability iOnly 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°W © OpenStreetMap

Growing Season

31 Days June 22 to July 23

USDA Hardiness Zone iHardiness 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 iThe 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

-15° -5° 5° 15°
-11°
High: -8°C
Avg: -11°C
Low: -15°C
Jan
-10°
High: -6°C
Avg: -10°C
Low: -14°C
Feb
-7°
High: -3°C
Avg: -7°C
Low: -11°C
Mar
-3°
High: 0°C
Avg: -3°C
Low: -7°C
Apr
1°
High: 5°C
Avg: 1°C
Low: -3°C
May
6°
High: 10°C
Avg: 6°C
Low: 1°C
Jun
8°
High: 13°C
Avg: 8°C
Low: 4°C
Jul
9°
High: 13°C
Avg: 9°C
Low: 4°C
Aug
5°
High: 9°C
Avg: 5°C
Low: 0°C
Sep
0°
High: 4°C
Avg: 0°C
Low: -4°C
Oct
-6°
High: -3°C
Avg: -6°C
Low: -10°C
Nov
-11°
High: -7°C
Avg: -11°C
Low: -14°C
Dec
0°C
−2°C
Avg High Avg Temp Avg Low Light Frost (0°C) Hard Frost (−2°C)

Precipitation

0 mm 50 mm 100 mm 150 mm
104 mm
104.1 mm
Jan
79 mm
78.7 mm
Feb
94 mm
94.0 mm
Mar
102 mm
101.6 mm
Apr
109 mm
109.2 mm
May
99 mm
99.1 mm
Jun
94 mm
94.0 mm
Jul
91 mm
91.4 mm
Aug
91 mm
91.4 mm
Sep
99 mm
99.1 mm
Oct
132 mm
132.1 mm
Nov
119 mm
119.4 mm
Dec

Sunrise / Sunset

4a7a10a1p4p7p10pNoonJanFebMarAprMayJunJulAugSepOctNovDec9h10h11.5h13.5h14.5h15.5h15h14h12.5h10.5h9h8.5h
Jan: 7:35 AM – 4:25 PM · 8h 51m
Feb: 6:56 AM – 5:04 PM · 10h 07m
Mar: 6:12 AM – 5:48 PM · 11h 37m
Apr: 5:21 AM – 6:39 PM · 13h 19m
May: 4:38 AM – 7:22 PM · 14h 44m
Jun: 4:15 AM – 7:45 PM · 15h 31m
Jul: 4:24 AM – 7:36 PM · 15h 12m
Aug: 5:01 AM – 6:59 PM · 13h 57m
Sep: 5:51 AM – 6:09 PM · 12h 18m
Oct: 6:40 AM – 5:20 PM · 10h 40m
Nov: 7:24 AM – 4:36 PM · 9h 12m
Dec: 7:46 AM – 4:14 PM · 8h 29m
Daylight Longest: 15h 32m · Shortest: 8h 28m

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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