Frost Dates for KUSTAVI ISOKARI, Finland

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. April 10
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. November 16
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 April 15
First Fall Frost November 5

Hard Freeze (−2°C)

Last Spring Hard Freeze March 26
First Fall Hard Freeze November 29
60.72°N, 21.03°W © OpenStreetMap

Growing Season

220 Days April 10 to November 16

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 7b

Avg. annual minimum: −15 to −12°C

Learn more

Köppen Climate iThe Köppen climate classification system categorizes climates based on temperature and precipitation patterns.

Dfb Warm-Summer Continental

Warm summers and cold, snowy winters. A shorter growing season than hot-summer continental. Hardy vegetables, root crops, and cool-season greens do well. Season extension is valuable.

Köppen climate map

Temperature

-5° 5° 15°
-1°
High: 1°C
Avg: -1°C
Low: -2°C
Jan
-2°
High: -1°C
Avg: -2°C
Low: -4°C
Feb
-1°
High: 0°C
Avg: -1°C
Low: -2°C
Mar
3°
High: 4°C
Avg: 3°C
Low: 2°C
Apr
7°
High: 8°C
Avg: 7°C
Low: 6°C
May
12°
High: 13°C
Avg: 12°C
Low: 11°C
Jun
16°
High: 17°C
Avg: 16°C
Low: 15°C
Jul
17°
High: 18°C
Avg: 17°C
Low: 16°C
Aug
13°
High: 14°C
Avg: 13°C
Low: 12°C
Sep
8°
High: 9°C
Avg: 8°C
Low: 7°C
Oct
4°
High: 5°C
Avg: 4°C
Low: 3°C
Nov
2°
High: 3°C
Avg: 2°C
Low: 0°C
Dec
0°C
−2°C
Avg High Avg Temp Avg Low Light Frost (0°C) Hard Frost (−2°C)

Precipitation

0 mm 20 mm 40 mm 60 mm 80 mm
48 mm
48.3 mm
Jan
23 mm
22.9 mm
Feb
15 mm
15.2 mm
Mar
23 mm
22.9 mm
Apr
30 mm
30.5 mm
May
48 mm
48.3 mm
Jun
64 mm
63.5 mm
Jul
71 mm
71.1 mm
Aug
66 mm
66.0 mm
Sep
79 mm
78.7 mm
Oct
76 mm
76.2 mm
Nov
74 mm
73.7 mm
Dec

Sunrise / Sunset

4a7a10a1p4p7p10pNoonJanFebMarAprMayJunJulAugSepOctNovDec6h8.5h11.5h14.5h17h18.5h18h15.5h12.5h9.5h7h5.5h
Jan: 8:56 AM – 3:04 PM · 6h 08m
Feb: 7:40 AM – 4:20 PM · 8h 41m
Mar: 6:20 AM – 5:40 PM · 11h 20m
Apr: 4:51 AM – 7:09 PM · 14h 18m
May: 3:31 AM – 8:29 PM · 16h 59m
Jun: 2:39 AM – 9:21 PM · 18h 42m
Jul: 3:01 AM – 8:59 PM · 17h 57m
Aug: 4:16 AM – 7:44 PM · 15h 28m
Sep: 5:44 AM – 6:16 PM · 12h 32m
Oct: 7:10 AM – 4:50 PM · 9h 40m
Nov: 8:33 AM – 3:27 PM · 6h 54m
Dec: 9:21 AM – 2:39 PM · 5h 18m
Daylight Longest: 18h 45m · Shortest: 5h 15m

Nearby Stations

RAUMA KYLMAPIHLAJA, Finland April 19 - November 2 KUMLINGE KIRKONKYLA, Finland April 11 - November 24 TURKU ARTUKAINEN, Finland May 1 - October 17 TURKU TURUN LENTOASEMA, Finland May 5 - October 13 PARAINEN FAGERHOLM, Finland April 22 - November 7 KAARINA YLTOINEN, Finland May 1 - October 15

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