Frost Dates for ROVANIEMI RAUTATIEASEMA, Finland

Elevation: 92 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. May 18
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. September 30
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 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°W © OpenStreetMap

Growing Season

135 Days May 18 to September 30

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°
-10°
High: -7°C
Avg: -10°C
Low: -13°C
Jan
-10°
High: -8°C
Avg: -10°C
Low: -13°C
Feb
-5°
High: -2°C
Avg: -5°C
Low: -9°C
Mar
0°
High: 4°C
Avg: 0°C
Low: -4°C
Apr
6°
High: 10°C
Avg: 6°C
Low: 2°C
May
13°
High: 16°C
Avg: 13°C
Low: 8°C
Jun
16°
High: 19°C
Avg: 16°C
Low: 12°C
Jul
14°
High: 17°C
Avg: 14°C
Low: 10°C
Aug
8°
High: 11°C
Avg: 8°C
Low: 5°C
Sep
1°
High: 3°C
Avg: 1°C
Low: -1°C
Oct
-4°
High: -2°C
Avg: -4°C
Low: -6°C
Nov
-7°
High: -5°C
Avg: -7°C
Low: -10°C
Dec
0°C
−2°C
Avg High Avg Temp Avg Low Light Frost (0°C) Hard Frost (−2°C)

Precipitation

0 mm 30 mm 60 mm 90 mm
25 mm
25.4 mm
Jan
25 mm
25.4 mm
Feb
25 mm
25.4 mm
Mar
30 mm
30.5 mm
Apr
61 mm
61.0 mm
May
76 mm
76.2 mm
Jun
81 mm
81.3 mm
Jul
74 mm
73.7 mm
Aug
64 mm
63.5 mm
Sep
61 mm
61.0 mm
Oct
58 mm
58.4 mm
Nov
46 mm
45.7 mm
Dec

Sunrise / Sunset

4a7a10a1p4p7p10pNoonJanFebMarAprMayJunJulAugSepOctNovDec3.5h7.5h11h15h19h23h20.5h16.5h12.5h9h5h1h
Jan: 10:14 AM – 1:46 PM · 3h 32m
Feb: 8:12 AM – 3:48 PM · 7h 37m
Mar: 6:26 AM – 5:34 PM · 11h 08m
Apr: 4:30 AM – 7:30 PM · 14h 59m
May: 2:34 AM – 9:26 PM · 18h 52m
Jun: 12:31 AM – 11:29 PM · 22h 59m
Jul: 1:40 AM – 10:20 PM · 20h 40m
Aug: 3:43 AM – 8:17 PM · 16h 35m
Sep: 5:40 AM – 6:20 PM · 12h 41m
Oct: 7:32 AM – 4:28 PM · 8h 57m
Nov: 9:32 AM – 2:28 PM · 4h 56m
Dec: 11:31 AM – 12:29 PM · 0h 58m
Daylight Longest: 23h 28m · Shortest: 0h 34m

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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