Saint-Lô weather forecast

Conditions in Saint-Lô at the moment: clear sky, 28 °C. It feels close to the actual reading at 29 °C. Wind is from the NE at 20 km/h, gusting to 36 km/h. Humidity stands at 51% with sea-level pressure near 1024 hPa.

At a glance

Today looks like overcast; temperatures run from 15 °C up to 28 °C. Gusts may reach 42 km/h from the NE. Expect overcast tomorrow, between 22 °C and 36 °C. Tuesday brings partly cloudy with a high of 41 °C and a low of 26 °C.

Soil temperatures today read surface 21.3 °C, 6 cm 23.5 °C, 18 cm 23.5 °C, 54 cm 18.9 °C. Soil moisture sits at 0-1 cm at 0.09 m³/m³, 3-9 cm at 0.2 m³/m³, 27-81 cm at 0.32 m³/m³. For wheat, the root-zone reading is below the ideal 0.2-0.35 m³/m³ band. Reference evapotranspiration totals 44 mm against only 1 mm of expected rain — a 43 mm deficit, so irrigation will be needed this week. A suitable spraying window opens around 06:00 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 41 °C (threshold 32 °C). Heat stress is likely for maize with highs reaching 41 °C (threshold 35 °C). Projected growing degree days over the next week: wheat 157, maize 118.

Topsoil moisture

0.094 m³/m³

Soil temp

18°C

ET₀ today

5.74 mm

Spray window

~5:00

Rain (next 7d)

0.9 mm

Wind

21 km/h

Humidity

89%

Full farming outlook for Saint-Lô →

Weather alerts for Saint-Lô (derived from forecast data, not official warnings): Extreme heat tomorrow: feels-like temperatures up to 41 °C. Extreme heat Tuesday: feels-like temperatures up to 42 °C.

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