Weather in McKinney in September
McKinney, United States averages a high of 30.3°C (86.5°F) and low of 21°C (69.8°F) in September, with 6 rain days and 10.4 hours of daily sunshine. Travel score: 90.8/100 (Excellent). The best time to visit McKinney is September.
High
30°C87°F
Low
21°C70°F
🌧️
6
rain days
☀️
10.4
hrs/day sunshine
💧
62%
humidity
91— Excellent
September in McKinney is hot and mostly dry — excellent conditions for exploring.
What are the average temperatures in McKinney?
How much does it rain in McKinney in September?
McKinney receives an average of 80.1mm of rainfall across 6 rainy days in September. The annual total is 1089.6mm.
What should I pack for McKinney in September?
Essentials
👟
Comfortable walking shoes
Essential for exploring the city
👕
Light, breathable clothing
Hot weather with highs around 30°C
🧢
Sun hat or cap
Protection from intense sun
🧴
Sunscreen SPF 30+
10 hours of sunshine daily
🕶️
Sunglasses
Protect your eyes from bright sun
Traveling to United States in September?
Don't let a public holiday surprise you — restaurants, shops, and attractions may be closed.
🏛️ 121 countries·📅 Updated yearly·✈️ Free forever
Compare McKinney
Popular comparisons:
How can I plan my trip to McKinney?
What other cities are near McKinney?
What are other popular cities in United States?
What is the weather like in other months in McKinney?
Data based on 1994–2024 averages · Last updated: 2024-12-31