Idyllwild Weather in December

December in Idyllwild brings low temperatures, with highs of 11°C (52°F) and nights dropping to -1°C (30°F). It's the rainiest month of the year, so come prepared with waterproof gear.

Rainfall in Idyllwild in December

Since this month has the highest rainfall, keep an umbrella with you to handle sudden showers. Based on our climate data of the past 30 years, about 9 days of snow/rain are anticipated, with 135 mm (5.3 in) on average. The rain this month tends to fall in heavier spells rather than light drizzle. When it rains, showers can be significant.

Temperature in Idyllwild in December

In December, expect low temperatures in Idyllwild, with highs of 11°C (52°F) and lows of -1°C (30°F) at night. December is in the winter season. It stays cool throughout the day, so warm layers are a good idea from morning to evening. At -1°C (30°F) overnight, frost and ice are likely outside. Indoors, consider packing an extra blanket if you're unsure about the heating. December usually brings the most temperate weather conditions of the year.

Average water temperature in December

At 16°C (61°F), the water is cool but manageable for those who don't mind a bit of a shock getting in. Most people adjust after a few minutes.

If you prefer dry days with pleasant temperatures, December may not be the ideal month to visit Idyllwild. Our weather planner can help you explore destinations with more pleasant weather conditions.