Frost Dates for JOHNSTON ISLAND NAS, United States Minor Outlying Islands

Elevation: 5 m

Frost Dates

This location never reaches freezing temperatures, so you can plant year-round!

In tropical and subtropical climates, the main challenge isn’t frost — it’s heat and humidity. Learn more about gardening in tropical climates.

16.73°N, -169.53°W © OpenStreetMap

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 13a

Avg. annual minimum: 16 to 18°C

Learn more

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

Aw Tropical Savanna (Dry Winter)

Hot year-round with distinct wet and dry seasons. The dry winter allows for seasonal planting. Drought-tolerant crops do well in the dry season; the wet season supports lush growth.

Köppen climate map

Temperature

20° 25° 30°
25°
High: 25°C
Avg: 25°C
Low: 24°C
Jan
24°
High: 25°C
Avg: 24°C
Low: 24°C
Feb
24°
High: 25°C
Avg: 24°C
Low: 24°C
Mar
25°
High: 25°C
Avg: 25°C
Low: 24°C
Apr
25°
High: 26°C
Avg: 25°C
Low: 25°C
May
26°
High: 26°C
Avg: 26°C
Low: 25°C
Jun
26°
High: 27°C
Avg: 26°C
Low: 26°C
Jul
27°
High: 27°C
Avg: 27°C
Low: 26°C
Aug
27°
High: 27°C
Avg: 27°C
Low: 26°C
Sep
27°
High: 27°C
Avg: 27°C
Low: 26°C
Oct
26°
High: 27°C
Avg: 26°C
Low: 25°C
Nov
25°
High: 26°C
Avg: 25°C
Low: 25°C
Dec
Avg High Avg Temp Avg Low

Precipitation

0 mm 30 mm 60 mm 90 mm
5 mm
5.1 mm
Jan
20 mm
20.3 mm
Feb
25 mm
25.4 mm
Mar
10 mm
10.2 mm
Apr
8 mm
7.6 mm
May
3 mm
2.5 mm
Jun
20 mm
20.3 mm
Jul
51 mm
50.8 mm
Aug
81 mm
81.3 mm
Sep
89 mm
88.9 mm
Oct
76 mm
76.2 mm
Nov
48 mm
48.3 mm
Dec

Sunrise / Sunset

4a7a10a1p4p7p10pNoonJanFebMarAprMayJunJulAugSepOctNovDec11h11.5h12h12.5h13h13h13h12.5h12h11.5h11h11h
Jan: 6:27 AM – 5:33 PM · 11h 06m
Feb: 6:16 AM – 5:44 PM · 11h 27m
Mar: 6:03 AM – 5:57 PM · 11h 53m
Apr: 5:49 AM – 6:11 PM · 12h 23m
May: 5:37 AM – 6:23 PM · 12h 47m
Jun: 5:30 AM – 6:30 PM · 12h 60m
Jul: 5:33 AM – 6:27 PM · 12h 54m
Aug: 5:43 AM – 6:17 PM · 12h 34m
Sep: 5:57 AM – 6:03 PM · 12h 05m
Oct: 6:12 AM – 5:48 PM · 11h 37m
Nov: 6:24 AM – 5:36 PM · 11h 12m
Dec: 6:30 AM – 5:30 PM · 11h 00m
Daylight Longest: 12h 60m · Shortest: 11h 00m

Nearby Stations

JOHNSTON ISLAND, United States Minor Outlying Islands

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