FarmHand
Back to Blog
Weather

Using Weather Data to Make Better Farming Decisions

Dr. Kanya Thongchai Jan 20, 2026 6 min read

Learn how to interpret weather forecasts and alerts to optimize planting, irrigation, and harvest timing.

Beyond the Basic Forecast

Generic weather forecasts tell you if it will rain tomorrow. Agricultural weather intelligence tells you when to plant, irrigate, spray, and harvest for optimal results. The difference between good and great farming decisions often comes down to how you use weather data.

Key Weather Metrics for Farmers

  • Accumulated rainfall β€” Track weekly and monthly totals against your crop's water requirements, not just daily forecasts.
  • Growing degree days (GDD) β€” Heat accumulation drives crop development more reliably than calendar dates.
  • Soil moisture β€” Combining rainfall data with evapotranspiration estimates tells you when irrigation is actually needed.
  • Wind speed and humidity β€” Critical for spray application timing. Avoid spraying when winds exceed 15 km/h or humidity is below 40%.

Planning Around Weather Windows

Use 7-14 day forecasts to schedule major operations. Need 3 dry days for harvest? Watch the extended forecast and mobilize equipment when a clear window approaches. Planning pesticide applications? Target a period with low wind, moderate humidity, and no rain for at least 6 hours after spraying.

Severe Weather Preparedness

FarmHand sends real-time severe weather alerts including tropical storms, frost warnings, and extreme heat advisories. Set up automated alerts for your specific location and crop types. Having an action plan ready β€” covering equipment, irrigation, animal shelter, and harvesting priorities β€” means the difference between minimal damage and devastating losses.

Historical Weather Analysis

Review weather patterns from the past 5-10 years to identify trends in your area. Are dry seasons arriving earlier? Is monsoon rainfall more variable? This long-term perspective helps you choose appropriate crop varieties, plan planting dates, and make infrastructure investments like water storage or shade structures.