Frost Dates for OULUNSALO OULUN LENTOASEMA, Finland

Elevation: 14 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 10
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. October 9

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 14
First Fall Frost October 4

Hard Freeze (−2°C)

Last Spring Hard Freeze April 29
First Fall Hard Freeze October 21
64.93°N, 25.35°E © OpenStreetMap

Growing Season

152 Days May 10 to October 9

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-6°-8°-11°
March-2°-4°-7°
April4°1°-3°
May11°8°4°
June16°13°9°
July19°17°13°
August18°15°12°
September12°10°7°
October5°3°1°
November0°-1°-3°
December-3°-5°-7°

Precipitation

Precipitation table
Average monthly precipitation (millimeters)
MonthPrecipitation
January25
February15
March5
April18
May46
June58
July76
August66
September64
October58
November56
December48

Sunrise / Sunset

Daylight Longest: 21h 04m · Shortest: 2h 56m
Sunrise and sunset table
Sunrise, sunset, and daylight on the 15th of each month (local solar time)
Month Sunrise Sunset Daylight
January9:45 AM2:15 PM4h 30m
February8:01 AM3:59 PM7h 57m
March6:24 AM5:36 PM11h 12m
April4:37 AM7:23 PM14h 46m
May2:53 AM9:07 PM18h 13m
June1:32 AM10:28 PM20h 57m
July2:10 AM9:50 PM19h 39m
August3:53 AM8:07 PM16h 13m
September5:41 AM6:19 PM12h 38m
October7:25 AM4:35 PM9h 10m
November9:12 AM2:48 PM5h 37m
December10:29 AM1:31 PM3h 02m

Nearby Stations

OULUNSALO PELLONPAA, Finland May 10 - October 9 OULU VIHREASAARI, Finland May 10 - October 12 SIIKAJOKI REVONLAHTI, Finland May 14 - October 2 RAAHE LAPALUOTO, Finland May 8 - October 18 VAALA PELSO, Finland May 12 - October 6 KEMI I MAJAKKA, Finland May 8 - October 27

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