1 active NWS alert in HawaiiFlood Watch
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Weather tools · Farming weather

Farming weather Hawaii

The best days for spraying, fertilizing, planting, hay and grain drying and field work, plus rainfall, frost risk and livestock heat stress.

light rain 75° light rainNow

Today on the farm in Hawaii

Spraying Poor Rain will wash it off
Fertilizing Good Light rain helps it soak in
Hay & grain drying Poor Rain or very humid
Planting Good Moist soil expected
Field work / harvest Fair Showers possible
Rain in the next 7 days0.38 inDry week – plan irrigation
Livestock heat stress (THI)74Mild stress
Humidity now93%High fungal disease risk

7-day farm calendar

DayRainSprayingFertilizingPlantingHay & grain dryingField work / harvest
Today 0.16 in · 100%
73° / 77°
Poor Good Good Poor Fair
Tomorrow 0 in · 8%
72° / 78°
Good Fair Fair Fair Good
Sat, Oct 31 0 in · 0%
71° / 82°
Good Fair Good Fair Good
Sun, Nov 1 0.12 in · 48%
71° / 77°
Poor Good Good Fair Fair
Mon, Nov 2 <0.01 in · 20%
69° / 75°
Poor Fair Fair Good Good
Tue, Nov 3 0.04 in · 40%
70° / 76°
Poor Fair Fair Fair Fair
Wed, Nov 4 0.06 in · 40%
70° / 77°
Poor Good Fair Fair Fair

Hover a rating to see the reason. Ratings use the forecast rain, rain chance, wind, humidity, cloud cover, frost and heat.

Tips for farmers and growers

  • Spray pesticides and herbicides when winds are between 3 and 10 mph, with no rain expected for at least 6 hours and no temperature inversion (avoid calm, foggy early mornings); always follow the product label.
  • Cut and bale hay on sunny, breezy days with humidity below 75% and no rain in the forecast for 2–3 days.
  • Plant after the last spring frost; when frost is forecast, cover tender plants, irrigate before the cold night and protect water lines.
  • Before heavy rain, clear drainage ditches and avoid applying manure or fertilizer that can run off into streams.
  • Give livestock shade, airflow and plenty of water when the THI is above 72, and avoid working cattle in the afternoon heat.
  • For drought conditions see the U.S. Drought Monitor; for official crop weather, the USDA and your state extension service.