Typical Weather in Modesto, CA in September
89° F Avg High
59° F Avg Low
1 Rainy Days
☀️ Temperature Summary
September is a popular time to visit, with an inviting climate featuring warm temperatures. Highs in September are typically around 89°F, which is warmer than usual in Modesto. You can expect overnight lows near 59°F most days. Temperatures will usually fall as the month goes on, with daily high temperatures ranging between 91°F and 84°F.
Be ready to seek shade during the day, as mid-day temperatures can be dangerous if you're caught without a way to cool off. If you want to avoid the September heat, you may consider visiting in October instead, when highs are often closer to 79°.
High Temps Throughout the Year
☔ Rain Summary
You can expect about a 2% chance of rain for any given day in September. It's one of the drier months of the year for Modesto, with total rainfall for the month around 0 inches.
Rainfall Throughout the Year
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