Alpharetta weather forecast

Alpharetta is currently seeing clear sky, with 20 °C on the thermometer. It feels warmer than it reads, more like 23 °C. Wind is from the WSW at 5 km/h. Humidity stands at 93% with sea-level pressure near 1015 hPa.

At a glance

Today looks like violent rain showers; temperatures run from 19 °C up to 30 °C. Tomorrow looks like thunderstorm; temperatures run from 22 °C up to 31 °C. Rain chance peaks at 72%. Gusts may reach 48 km/h from the SW. Tuesday brings light drizzle with a high of 31 °C and a low of 21 °C. Rain chance peaks at 72% with around 0.5 mm possible. Gusts may reach 43 km/h from the WNW.

Soil temperatures today read surface 22.9 °C, 6 cm 24.4 °C, 18 cm 24.8 °C, 54 cm 22.1 °C. Soil moisture sits at 0-1 cm at 0.3 m³/m³, 3-9 cm at 0.31 m³/m³, 27-81 cm at 0.34 m³/m³. For maize, the root-zone reading is within the ideal 0.2-0.35 m³/m³ band. Reference evapotranspiration totals 39 mm against only 22 mm of expected rain — a 17 mm deficit, so irrigation will be needed this week. A suitable spraying window opens around 07:00 on 2026-06-21, with winds at or below 15 km/h and no rain expected. Heat stress is likely for wheat with highs reaching 35 °C (threshold 32 °C). Projected growing degree days over the next week: maize 114, wheat 153.

Topsoil moisture

0.32 m³/m³

Soil temp

71°F

ET₀ today

4.7 mm

Spray window

~5:00

Rain (next 7d)

0.8 in

Wind

3 mph

Humidity

86%

Full farming outlook for Alpharetta →

No weather alert thresholds are crossed for Alpharetta in the current forecast (derived from forecast data, not official warnings). Conditions may still change — check back for updates.

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