Weather in Richardson in September
Richardson, United States averages a high of 30.6°C (87.1°F) and low of 21.3°C (70.3°F) in September, with 6 rain days and 10.4 hours of daily sunshine. Travel score: 91/100 (Excellent). The best time to visit Richardson is September.
High
31°C87°F
Low
21°C70°F
🌧️
6
rain days
☀️
10.4
hrs/day sunshine
💧
62%
humidity
91— Excellent
September in Richardson is hot and mostly dry — excellent conditions for exploring.
What are the average temperatures in Richardson?
How much does it rain in Richardson in September?
Richardson receives an average of 78.9mm of rainfall across 6 rainy days in September. The annual total is 1079.8mm.
What should I pack for Richardson in September?
Essentials
👟
Comfortable walking shoes
Essential for exploring the city
👕
Light, breathable clothing
Hot weather with highs around 31°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.
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Data based on 1994–2024 averages · Last updated: 2024-12-31