Ridder's climate is characterized by cold winters with temperatures often below -10°C in January and February, while summers are mild with average highs around 20-22°C in June and July. Spring arrives late, with April temperatures gradually warming to around 10-12°C, but still quite chilly. Autumn brings a slight cooling, with September averaging around 5-8°C, before the cold winter sets in again. The lowest temperature recorded is -32.9°C in January, while the highest is 33.3°C in July.