Typical Weather in Modesto, CA in December

55° F Avg High

39° F Avg Low

5 Rainy Days

☀️ Temperature Summary

Highs in December are typically around 55°F, which is cooler than usual in Modesto. You can expect overnight lows near 39°F most days. This is the coldest month of the year in Modesto.

Despite it being the coolest month of the year, December is still a great time to visit Modesto, with mild temperatures and sunny days being very common.

High Temps Throughout the Year

☔ Rain Summary

You can expect about a 17% chance of rain for any given day in December. It's one of the rainier months of the year for Modesto, with total rainfall for the month around 2 inches.