Typical Weather in McAllen, TX in September
93° F Avg High
73° F Avg Low
5 Rainy Days
☀️ Temperature Summary
Highs in September are typically around 93°F, which is warmer than usual in McAllen. You can expect overnight lows near 73°F most days. Daily high temperatures can range between 95°F and 91°F, and typically fall throughout the month.
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.
High Temps Throughout the Year
🎒 What to Pack
Pick up a few of these items to keep your trip fun and comfortable.
☔ Rain Summary
You can expect about a 16% chance of rain for any given day in September. It's one of the rainier months of the year for McAllen, with total rainfall for the month around 4 inches.
Rainfall Throughout the Year
Planning a trip to McAllen? Try our free trip weather planner