Last updated: June 24, 2025
In September, the average temperature in Reading, United States is a pleasant 19°C (66°F). Expect a temperature range that can dip to a chilly 3°C (37°F) and soar up to a balmy 32°C (90°F). During this month, prepare for approximately 67 mm (2.6 in) of precipitation spread over 8 days, with an average humidity of 78%. It's an ideal time to enjoy the seasonal climate, but don't forget your umbrella!
In September in Reading, the average temperature is 19°C (66°F). Maximum temperatures can reach 32°C (90°F), while minimum temperatures can drop to as low as 3°C (37°F). Be sure to pack a variety of clothing to accommodate both warm and cool weather during your travels.
In Reading in September, the total precipitation amount is 67 mm (2.6 in) over the course of 8 days.
In Reading in September, humidity is 78%. With an average temperature of 19°C (66°F), this humidity feels like a warm, enveloping blanket, making traveling quite uncomfortable unless you're well-prepared with lightweight, breathable clothing and frequent breaks to stay hydrated.
In Reading in September, the maximum UV index is 8, which corresponds to a very high Exposure Category. This means that the time to burn is only 15 minutes. For more detailed information, you can refer to the Hourly UV Index in Reading.
UV Risk Categories
Weather in Reading varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Reading, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | -3°C (27°F) | 72 mm (2.9 inches) | 88% | moderate |
| February Weather | -2°C (28°F) | 73 mm (2.9 inches) | 87% | moderate |
| March Weather | 3°C (38°F) | 96 mm (3.8 inches) | 87% | high |
| April Weather | 9°C (48°F) | 102 mm (4.0 inches) | 87% | very high |
| May Weather | 16°C (61°F) | 141 mm (5.6 inches) | 81% | very high |
| June Weather | 21°C (71°F) | 116 mm (4.6 inches) | 82% | very high |
| July Weather | 24°C (75°F) | 127 mm (5.0 inches) | 81% | very high |
| August Weather | 22°C (72°F) | 94 mm (3.7 inches) | 78% | very high |
| September Weather | 19°C (66°F) | 67 mm (2.6 inches) | 78% | very high |
| October Weather | 12°C (54°F) | 111 mm (4.4 inches) | 82% | high |
| November Weather | 4°C (39°F) | 83 mm (3.3 inches) | 89% | moderate |
| December Weather | 0°C (33°F) | 58 mm (2.3 inches) | 86% | low |