The town of Arnold has a warm-summer Mediterranean climate, with snowy winters. Summer high temperatures average around 83°F or 28°C. Winter temperatures can be as low as 28°F or -2°C. The elevation is 4,000 feet 1,219 meters. The Arnold area extends to Bear Valley with an elevation of 7,100 feet or 2,164 meters. Temperatures are 5 – 10°F cooler at those higher elevations.
See chart below for current weather conditions in the town of Arnold: