Frost Dates for ROVANIEMI RAUTATIEASEMA, Finland

Elevation: 92 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 18
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 30

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 May 22
First Fall Frost September 24

Hard Freeze (−2°C)

Last Spring Hard Freeze May 9
First Fall Hard Freeze October 13
66.50°N, 25.71°E © OpenStreetMap

Growing Season

135 Days May 18 to September 30

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-7°-10°-13°
February-8°-10°-13°
March-2°-5°-9°
April4°0°-4°
May10°6°2°
June16°13°8°
July19°16°12°
August17°14°10°
September11°8°5°
October3°1°-1°
November-2°-4°-6°
December-5°-7°-10°

Precipitation

Precipitation table
Average monthly precipitation (millimeters)
MonthPrecipitation
January25
February25
March25
April30
May61
June76
July81
August74
September64
October61
November58
December46

Sunrise / Sunset

Daylight Longest: 23h 28m · Shortest: 0h 34m
Sunrise and sunset table
Sunrise, sunset, and daylight on the 15th of each month (local solar time)
Month Sunrise Sunset Daylight
January10:14 AM1:46 PM3h 32m
February8:12 AM3:48 PM7h 37m
March6:26 AM5:34 PM11h 08m
April4:30 AM7:30 PM14h 59m
May2:34 AM9:26 PM18h 52m
June12:31 AM11:29 PM22h 59m
July1:40 AM10:20 PM20h 40m
August3:43 AM8:17 PM16h 35m
September5:40 AM6:20 PM12h 41m
October7:32 AM4:28 PM8h 57m
November9:32 AM2:28 PM4h 56m
December11:31 AM12:29 PM0h 58m

Nearby Stations

ROVANIEMI APUKKA, Finland May 18 - September 30 YLITORNIO MELTOSJARVI, Finland May 18 - October 1 RANUA LENTOKENTTA, Finland May 18 - September 28 KEMINMAA KEMI-TORNION LENTOASE, Finland May 13 - October 7 HAPARANDA, Sweden May 11 - October 12 HAPARANDA_A, Sweden May 11 - October 12

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