Frost Dates for ROROS, Norway

Elevation: 628 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. May 30
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. September 27

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 5
First Fall Frost September 21

Hard Freeze (−2°C)

Last Spring Hard Freeze May 16
First Fall Hard Freeze October 10
62.57°N, 11.38°E © OpenStreetMap

Growing Season

120 Days May 30 to September 27

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 5b

Avg. annual minimum: −26 to −23°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-5°-8°-10°
February-5°-7°-10°
March-1°-4°-8°
April3°0°-4°
May8°5°0°
June13°9°5°
July16°12°8°
August15°11°8°
September10°7°4°
October4°2°-1°
November-2°-4°-6°
December-5°-7°-10°

Precipitation

Precipitation table
Average monthly precipitation (millimeters)
MonthPrecipitation
January48
February25
March33
April51
May79
June91
July97
August81
September69
October61
November46
December38

Sunrise / Sunset

Daylight Longest: 19h 33m · Shortest: 4h 27m
Sunrise and sunset table
Sunrise, sunset, and daylight on the 15th of each month (local solar time)
Month Sunrise Sunset Daylight
January9:14 AM2:46 PM5h 31m
February7:48 AM4:12 PM8h 23m
March6:22 AM5:38 PM11h 16m
April4:45 AM7:15 PM14h 29m
May3:16 AM8:44 PM17h 28m
June2:16 AM9:44 PM19h 29m
July2:42 AM9:18 PM18h 35m
August4:07 AM7:53 PM15h 46m
September5:43 AM6:17 PM12h 34m
October7:16 AM4:44 PM9h 28m
November8:48 AM3:12 PM6h 24m
December9:45 AM2:15 PM4h 30m

Nearby Stations

ROROS AIRPORT, Norway May 30 - September 27 LJUSNEDAL, Sweden May 26 - September 25 TANNAS A, Sweden June 2 - September 24 SYLARNA, Sweden June 19 - August 24 FLATRUET_V, Sweden June 14 - September 6 SELBU-STUBBE, Norway May 18 - October 12

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