Frost Dates for OVERTORNEA, Sweden

Elevation: 57 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 15
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 3

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 19
First Fall Frost September 27

Hard Freeze (−2°C)

Last Spring Hard Freeze May 7
First Fall Hard Freeze October 16
66.38°N, 23.65°E © OpenStreetMap

Growing Season

141 Days May 15 to October 3

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°-12°
February-7°-10°-12°
March-2°-5°-8°
April4°0°-4°
May11°7°2°
June17°13°9°
July20°16°12°
August17°14°11°
September12°9°6°
October4°2°-1°
November-2°-4°-6°
December-5°-7°-10°

Precipitation

Precipitation table
Average monthly precipitation (millimeters)
MonthPrecipitation
January33
February30
March18
April28
May61
June71
July81
August79
September69
October43
November56
December56

Sunrise / Sunset

Daylight Longest: 23h 02m · Shortest: 0h 59m
Sunrise and sunset table
Sunrise, sunset, and daylight on the 15th of each month (local solar time)
Month Sunrise Sunset Daylight
January10:12 AM1:48 PM3h 37m
February8:11 AM3:49 PM7h 38m
March6:26 AM5:34 PM11h 08m
April4:31 AM7:29 PM14h 58m
May2:36 AM9:24 PM18h 49m
June12:39 AM11:21 PM22h 42m
July1:43 AM10:17 PM20h 35m
August3:44 AM8:16 PM16h 33m
September5:40 AM6:20 PM12h 41m
October7:31 AM4:29 PM8h 58m
November9:30 AM2:30 PM4h 60m
December11:22 AM12:38 PM1h 15m

Nearby Stations

YLINENJARVI_A, Sweden May 18 - September 27 OVERKALIX-SVARTBYN_A, Sweden May 16 - October 2 PELLO KK MUSEOTIE, Finland May 18 - September 27 YLITORNIO MELTOSJARVI, Finland May 18 - October 1 MARKUSVINSA, Sweden May 19 - September 28 HAPARANDA, Sweden May 11 - October 12

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