Frost Dates for SHONAI, Japan

Elevation: 23 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 1
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. December 10
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 7
First Fall Frost December 6

Hard Freeze (−2°C)

Last Spring Hard Freeze March 15
First Fall Hard Freeze December 17
38.80°N, 139.78°W © OpenStreetMap

Growing Season

253 Days April 1 to December 10

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 9a

Avg. annual minimum: −7 to −4°C

Learn more

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

Cfa Humid Subtropical

Hot, humid summers and mild winters with rain year-round. Long growing seasons support a wide variety of vegetables, fruits, and ornamentals. The most common climate in the eastern US.

Köppen climate map

Temperature

-5° 5° 15° 25°
1°
High: 3°C
Avg: 1°C
Low: -1°C
Jan
1°
High: 3°C
Avg: 1°C
Low: -1°C
Feb
3°
High: 6°C
Avg: 3°C
Low: 1°C
Mar
9°
High: 13°C
Avg: 9°C
Low: 5°C
Apr
14°
High: 18°C
Avg: 14°C
Low: 11°C
May
19°
High: 22°C
Avg: 19°C
Low: 16°C
Jun
23°
High: 26°C
Avg: 23°C
Low: 20°C
Jul
24°
High: 27°C
Avg: 24°C
Low: 22°C
Aug
21°
High: 24°C
Avg: 21°C
Low: 18°C
Sep
15°
High: 18°C
Avg: 15°C
Low: 12°C
Oct
9°
High: 12°C
Avg: 9°C
Low: 7°C
Nov
3°
High: 6°C
Avg: 3°C
Low: 2°C
Dec
0°C
−2°C
Avg High Avg Temp Avg Low Light Frost (0°C) Hard Frost (−2°C)

Precipitation

0 mm 75 mm 150 mm 225 mm 300 mm
272 mm
271.8 mm
Jan
185 mm
185.4 mm
Feb
170 mm
170.2 mm
Mar
127 mm
127.0 mm
Apr
135 mm
134.6 mm
May
145 mm
144.8 mm
Jun
246 mm
246.4 mm
Jul
198 mm
198.1 mm
Aug
170 mm
170.2 mm
Sep
211 mm
210.8 mm
Oct
229 mm
228.6 mm
Nov
292 mm
292.1 mm
Dec

Sunrise / Sunset

4a7a10a1p4p7p10pNoonJanFebMarAprMayJunJulAugSepOctNovDec9.5h10.5h11.5h13h14h14.5h14.5h13.5h12h11h10h9.5h
Jan: 7:13 AM – 4:47 PM · 9h 34m
Feb: 6:44 AM – 5:16 PM · 10h 32m
Mar: 6:09 AM – 5:51 PM · 11h 42m
Apr: 5:29 AM – 6:31 PM · 13h 01m
May: 4:56 AM – 7:04 PM · 14h 07m
Jun: 4:39 AM – 7:21 PM · 14h 42m
Jul: 4:46 AM – 7:14 PM · 14h 28m
Aug: 5:14 AM – 6:46 PM · 13h 31m
Sep: 5:53 AM – 6:07 PM · 12h 14m
Oct: 6:31 AM – 5:29 PM · 10h 57m
Nov: 7:05 AM – 4:55 PM · 9h 50m
Dec: 7:21 AM – 4:39 PM · 9h 18m
Daylight Longest: 14h 43m · Shortest: 9h 17m

Nearby Stations

SHINJO, Japan April 13 - November 19 YAMAGATA, Japan April 13 - November 18 AKITA, JapanApril 1 - December 4 NIIGATA, Japan March 27 - December 14 SENDAI, JapanApril 3 - December 1 WAKAMATSU, Japan April 10 - November 26

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