St. Wendel’s climate is characterised by delicate temperatures and reasonable precipitation all year long. The typical annual temperature is round 9C (48F), with common highs of 15C (59F) in July and common lows of 1C (34F) in January. Annual precipitation averages round 800 mm (31.5 in), with the wettest months being June and July.
The local weather of St. Wendel is influenced by its location within the Saarland area of Germany, which is understood for its temperate local weather. The area is sheltered from the chilly easterly winds by the Vosges Mountains, and the delicate air from the west brings frequent rainfall.