Frost Dates for Mililani Town, HI

Based on data from Upper Wahiawa 874.3 weather station, 3 miles away

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.

21.45°N, -158.01°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 11b

Avg. annual minimum: 45 to 50°F (7 to 10°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

60° 70° 80° 90°
68°
High: 76°F
Avg: 68°F
Low: 61°F
Jan
68°
High: 76°F
Avg: 68°F
Low: 60°F
Feb
69°
High: 77°F
Avg: 69°F
Low: 62°F
Mar
70°
High: 77°F
Avg: 70°F
Low: 63°F
Apr
72°
High: 79°F
Avg: 72°F
Low: 65°F
May
73°
High: 80°F
Avg: 73°F
Low: 67°F
Jun
74°
High: 82°F
Avg: 74°F
Low: 67°F
Jul
76°
High: 83°F
Avg: 76°F
Low: 68°F
Aug
75°
High: 83°F
Avg: 75°F
Low: 67°F
Sep
74°
High: 82°F
Avg: 74°F
Low: 66°F
Oct
72°
High: 79°F
Avg: 72°F
Low: 65°F
Nov
70°
High: 77°F
Avg: 70°F
Low: 63°F
Dec
Avg High Avg Temp Avg Low

Precipitation

0" 2" 4" 4.4"
3.8"
3.79"
Jan
3.5"
3.48"
Feb
4.4"
4.40"
Mar
3.8"
3.81"
Apr
2.9"
2.90"
May
3.4"
3.39"
Jun
3.5"
3.48"
Jul
2.3"
2.32"
Aug
2.4"
2.40"
Sep
3.2"
3.22"
Oct
3.6"
3.65"
Nov
3.9"
3.91"
Dec

Sunrise / Sunset

4a7a10a1p4p7p10pNoonJanFebMarAprMayJunJulAugSepOctNovDec11h11.5h12h12.5h13h13.5h13h12.5h12h11.5h11h10.5h
Jan: 6:35 AM – 5:25 PM · 10h 49m
Feb: 6:21 AM – 5:39 PM · 11h 17m
Mar: 6:04 AM – 5:56 PM · 11h 51m
Apr: 5:45 AM – 6:15 PM · 12h 30m
May: 5:29 AM – 6:31 PM · 13h 02m
Jun: 5:21 AM – 6:39 PM · 13h 18m
Jul: 5:24 AM – 6:36 PM · 13h 11m
Aug: 5:38 AM – 6:22 PM · 12h 44m
Sep: 5:57 AM – 6:03 PM · 12h 07m
Oct: 6:15 AM – 5:45 PM · 11h 29m
Nov: 6:31 AM – 5:29 PM · 10h 57m
Dec: 6:39 AM – 5:21 PM · 10h 42m
Daylight Longest: 13h 19m · Shortest: 10h 41m

Nearby Stations

Poamoho Exp Fm 855.2, HI Waimea Valley 892.2, HI Kapaka Farm 904.1, HI Puu Manawahua 725.6, HI Waihee 837.5, HI Makaha Ctry Club 800.3, HI

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