Frost Dates for HIROO, Japan

Elevation: 33 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. April 23
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 12
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 27
First Fall Frost November 9

Hard Freeze (−2°C)

Last Spring Hard Freeze April 13
First Fall Hard Freeze November 24
42.30°N, 143.32°W © OpenStreetMap

Growing Season

203 Days April 23 to November 12

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 7a

Avg. annual minimum: −18 to −15°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

-10° 0° 10° 20°
-5°
High: -2°C
Avg: -5°C
Low: -9°C
Jan
-5°
High: -1°C
Avg: -5°C
Low: -9°C
Feb
-1°
High: 3°C
Avg: -1°C
Low: -4°C
Mar
5°
High: 9°C
Avg: 5°C
Low: 1°C
Apr
11°
High: 15°C
Avg: 11°C
Low: 7°C
May
15°
High: 18°C
Avg: 15°C
Low: 12°C
Jun
18°
High: 22°C
Avg: 18°C
Low: 16°C
Jul
20°
High: 23°C
Avg: 20°C
Low: 17°C
Aug
17°
High: 20°C
Avg: 17°C
Low: 14°C
Sep
11°
High: 15°C
Avg: 11°C
Low: 8°C
Oct
5°
High: 8°C
Avg: 5°C
Low: 2°C
Nov
-2°
High: 1°C
Avg: -2°C
Low: -5°C
Dec
0°C
−2°C
Avg High Avg Temp Avg Low Light Frost (0°C) Hard Frost (−2°C)

Precipitation

0 mm 50 mm 100 mm 150 mm 200 mm
64 mm
63.5 mm
Jan
53 mm
53.3 mm
Feb
86 mm
86.4 mm
Mar
104 mm
104.1 mm
Apr
107 mm
106.7 mm
May
89 mm
88.9 mm
Jun
119 mm
119.4 mm
Jul
173 mm
172.7 mm
Aug
183 mm
182.9 mm
Sep
130 mm
129.5 mm
Oct
91 mm
91.4 mm
Nov
91 mm
91.4 mm
Dec

Sunrise / Sunset

4a7a10a1p4p7p10pNoonJanFebMarAprMayJunJulAugSepOctNovDec9h10.5h11.5h13h14.5h15h15h13.5h12.5h11h9.5h9h
Jan: 7:23 AM – 4:37 PM · 9h 14m
Feb: 6:50 AM – 5:10 PM · 10h 21m
Mar: 6:10 AM – 5:50 PM · 11h 39m
Apr: 5:25 AM – 6:35 PM · 13h 09m
May: 4:48 AM – 7:12 PM · 14h 24m
Jun: 4:28 AM – 7:32 PM · 15h 05m
Jul: 4:36 AM – 7:24 PM · 14h 48m
Aug: 5:08 AM – 6:52 PM · 13h 43m
Sep: 5:52 AM – 6:08 PM · 12h 16m
Oct: 6:35 AM – 5:25 PM · 10h 49m
Nov: 7:14 AM – 4:46 PM · 9h 33m
Dec: 7:32 AM – 4:28 PM · 8h 55m
Daylight Longest: 15h 06m · Shortest: 8h 54m

Nearby Stations

URAKAWA, Japan April 19 - November 19 OBIHIRO, Japan April 29 - October 22 KUSHIRO, Japan April 26 - November 12 ASAHIKAWA, Japan May 4 - October 25

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