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

Zone 13a

Avg. annual minimum: 16 to 18°C

Learn more

Köppen Climate

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°

Jan

24°

Feb

24°

Mar

25°

Apr

25°

May

26°

Jun

26°

Jul

27°

Aug

27°

Sep

27°

Oct

26°

Nov

25°

Dec

Avg High Avg Temp Avg Low

Temperature table

Average monthly temperatures (°C)
Month	Avg High	Avg Temp	Avg Low
January	25°	25°	24°
February	25°	24°	24°
March	25°	24°	24°
April	25°	25°	24°
May	26°	25°	25°
June	26°	26°	25°
July	27°	26°	26°
August	27°	27°	26°
September	27°	27°	26°
October	27°	27°	26°
November	27°	26°	25°
December	26°	25°	25°

Precipitation

0 mm 30 mm 60 mm 90 mm

5 mm

Jan

20 mm

Feb

25 mm

Mar

10 mm

Apr

8 mm

May

3 mm

Jun

20 mm

Jul

51 mm

Aug

81 mm

Sep

89 mm

Oct

76 mm

Nov

48 mm

Dec

Precipitation table

Average monthly precipitation (millimeters)
Month	Precipitation
January	5
February	20
March	25
April	10
May	8
June	3
July	20
August	51
September	81
October	89
November	76
December	48

Sunrise / Sunset

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

Sunrise and sunset table

Sunrise, sunset, and daylight on the 15th of each month (local solar time)
Month	Sunrise	Sunset	Daylight
January	6:27 AM	5:33 PM	11h 06m
February	6:16 AM	5:44 PM	11h 27m
March	6:03 AM	5:57 PM	11h 53m
April	5:49 AM	6:11 PM	12h 23m
May	5:37 AM	6:23 PM	12h 47m
June	5:30 AM	6:30 PM	12h 60m
July	5:33 AM	6:27 PM	12h 54m
August	5:43 AM	6:17 PM	12h 34m
September	5:57 AM	6:03 PM	12h 05m
October	6:12 AM	5:48 PM	11h 37m
November	6:24 AM	5:36 PM	11h 12m
December	6:30 AM	5:30 PM	11h 00m

Nearby Stations

JOHNSTON ISLAND, United States Minor Outlying Islands

Plan Your Garden with Planter

Now that you know your frost dates, use Planter to plan your veggie garden! Planter is an easy drag-and-drop garden planner with personalized planting schedules.

Try Planter For Free

Available everywhere: iOS, Android, web, and more!