Duluth farming weather

Soil temperatures today read surface 22.9 °C, 6 cm 24.4 °C, 18 cm 24.9 °C, 54 cm 22.2 °C. Soil moisture sits at 0-1 cm at 0.3 m³/m³, 3-9 cm at 0.3 m³/m³, 27-81 cm at 0.32 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 113, wheat 151.

Soil temperatures today read surface 22.9 °C, 6 cm 24.4 °C, 18 cm 24.9 °C, 54 cm 22.2 °C. Soil moisture sits at 0-1 cm at 0.3 m³/m³, 3-9 cm at 0.3 m³/m³, 27-81 cm at 0.32 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 113, wheat 151.

Topsoil moisture

0.314 m³/m³

Soil temp

71°F

ET₀ today

4.77 mm

Spray window

~5:00

Rain (next 7d)

0.9 in

Wind

4 mph

Humidity

89%

Full farming outlook for Duluth →

Today looks like moderate rain; temperatures run from 20 °C up to 29 °C. Tomorrow brings thunderstorm with a high of 31 °C and a low of 22 °C. Rain chance peaks at 70%. Gusts may reach 47 km/h from the SW. Expect light drizzle Tuesday, between 21 °C and 31 °C. Rain chance peaks at 70% with around 0.2 mm possible.