Frost Dates for Fern Acres, HI

Based on data from Glenwood #2 55.4 weather station, 4 miles away

Elevation: 1532 ft

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.

19.51°N, 155.08°W © OpenStreetMap

USDA Hardiness Zone

Zone 11a

Avg. annual minimum: 40 to 45°F

Learn more

Köppen Climate

Cfb Oceanic (Marine West Coast)

Mild year-round with cool summers and wet winters. Excellent for cool-season crops like brassicas, peas, and root vegetables. Extended harvest seasons but summer heat-loving crops may struggle.

Köppen climate map

Temperature

50° 60° 70° 80°

65°

Jan

64°

Feb

65°

Mar

66°

Apr

67°

May

68°

Jun

69°

Jul

70°

Aug

70°

Sep

69°

Oct

67°

Nov

66°

Dec

Avg High Avg Temp Avg Low

Temperature table

Average monthly temperatures (°F)
Month	Avg High	Avg Temp	Avg Low
January	74°	65°	56°
February	72°	64°	56°
March	73°	65°	57°
April	73°	66°	58°
May	75°	67°	59°
June	76°	68°	60°
July	77°	69°	62°
August	77°	70°	62°
September	78°	70°	61°
October	77°	69°	61°
November	75°	67°	59°
December	74°	66°	57°

Precipitation

0" 4" 8" 12" 14.6"

10.9"

Jan

10.9"

Feb

13.8"

Mar

14.6"

Apr

10.7"

May

11.3"

Jun

12.2"

Jul

11.0"

Aug

10.7"

Sep

11.8"

Oct

11.9"

Nov

14.2"

Dec

Precipitation table

Average monthly precipitation (inches)
Month	Precipitation
January	10.9
February	10.9
March	13.8
April	14.6
May	10.7
June	11.3
July	12.2
August	11.0
September	10.7
October	11.8
November	11.9
December	14.2

Sunrise / Sunset

Jan: 7:02 AM – 5:58 PM · 10h 57m

Feb: 6:54 AM – 6:16 PM · 11h 22m

Mar: 6:34 AM – 6:26 PM · 11h 52m

Apr: 6:07 AM – 6:34 PM · 12h 27m

May: 5:49 AM – 6:45 PM · 12h 55m

Jun: 5:46 AM – 6:56 PM · 13h 10m

Jul: 5:54 AM – 6:58 PM · 13h 04m

Aug: 6:05 AM – 6:45 PM · 12h 40m

Sep: 6:12 AM – 6:18 PM · 12h 06m

Oct: 6:19 AM – 5:52 PM · 11h 33m

Nov: 6:34 AM – 5:37 PM · 11h 03m

Dec: 6:52 AM – 5:41 PM · 10h 50m

Daylight Hawaii Time (HST) Longest: 13h 11m · Shortest: 10h 49m

Sunrise and sunset table

Sunrise, sunset, and daylight on the 15th of each month (Hawaii Time (HST))
Month	Sunrise	Sunset	Daylight
January	7:02 AM	5:58 PM	10h 57m
February	6:54 AM	6:16 PM	11h 22m
March	6:34 AM	6:26 PM	11h 52m
April	6:07 AM	6:34 PM	12h 27m
May	5:49 AM	6:45 PM	12h 55m
June	5:46 AM	6:56 PM	13h 10m
July	5:54 AM	6:58 PM	13h 04m
August	6:05 AM	6:45 PM	12h 40m
September	6:12 AM	6:18 PM	12h 06m
October	6:19 AM	5:52 PM	11h 33m
November	6:34 AM	5:37 PM	11h 03m
December	6:52 AM	5:41 PM	10h 50m

Nearby Stations

Hilo 5 S, HI Hawaii Vol Np Hq 54, HI Hilo Intl AP, HI Mauna Loa 5 Nne, HI April 12 - December 1 Kihalani 132.5, HI Sea Mtn 12.15, HI

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