Frost Dates for NAGANO, Japan

Elevation: 395 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 14
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 18
First Fall Frost November 11

Hard Freeze (−2°C)

Last Spring Hard Freeze April 1
First Fall Hard Freeze November 30
36.67°N, 138.20°W © OpenStreetMap

Growing Season

216 Days April 14 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 8a

Avg. annual minimum: −12 to −9°C

Learn more

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

Dfa Hot-Summer Continental

Hot summers and cold winters with year-round precipitation. Moderate growing season supports warm-season crops like tomatoes, peppers, and corn. Winter protection extends the harvest.

Köppen climate map

Temperature

-5° 5° 15° 25°
-2°
High: 2°C
Avg: -2°C
Low: -5°C
Jan
-1°
High: 3°C
Avg: -1°C
Low: -4°C
Feb
3°
High: 7°C
Avg: 3°C
Low: -1°C
Mar
8°
High: 14°C
Avg: 8°C
Low: 4°C
Apr
15°
High: 21°C
Avg: 15°C
Low: 10°C
May
19°
High: 24°C
Avg: 19°C
Low: 15°C
Jun
23°
High: 27°C
Avg: 23°C
Low: 19°C
Jul
24°
High: 28°C
Avg: 24°C
Low: 20°C
Aug
19°
High: 24°C
Avg: 19°C
Low: 16°C
Sep
13°
High: 18°C
Avg: 13°C
Low: 10°C
Oct
7°
High: 12°C
Avg: 7°C
Low: 3°C
Nov
1°
High: 5°C
Avg: 1°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
145 mm
144.8 mm
Jan
112 mm
111.8 mm
Feb
137 mm
137.2 mm
Mar
112 mm
111.8 mm
Apr
127 mm
127.0 mm
May
175 mm
175.3 mm
Jun
229 mm
228.6 mm
Jul
155 mm
154.9 mm
Aug
178 mm
177.8 mm
Sep
165 mm
165.1 mm
Oct
107 mm
106.7 mm
Nov
137 mm
137.2 mm
Dec

Sunrise / Sunset

4a7a10a1p4p7p10pNoonJanFebMarAprMayJunJulAugSepOctNovDec10h10.5h11.5h13h14h14.5h14.5h13.5h12h11h10h9.5h
Jan: 7:07 AM – 4:53 PM · 9h 45m
Feb: 6:41 AM – 5:19 PM · 10h 39m
Mar: 6:08 AM – 5:52 PM · 11h 43m
Apr: 5:32 AM – 6:28 PM · 12h 57m
May: 5:01 AM – 6:59 PM · 13h 57m
Jun: 4:45 AM – 7:15 PM · 14h 30m
Jul: 4:52 AM – 7:08 PM · 14h 17m
Aug: 5:18 AM – 6:42 PM · 13h 24m
Sep: 5:53 AM – 6:07 PM · 12h 13m
Oct: 6:29 AM – 5:31 PM · 11h 02m
Nov: 6:60 AM – 5:00 PM · 10h 00m
Dec: 7:15 AM – 4:45 PM · 9h 30m
Daylight Longest: 14h 31m · Shortest: 9h 29m

Nearby Stations

KARUIZAWA, Japan April 19 - November 12 TAKADA, Japan April 8 - November 27 MATSUMOTO, Japan April 18 - November 14 SUWA, JapanApril 17 - November 15 MAEBASHI, Japan March 30 - November 30 TOYAMA, Japan April 7 - November 29

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