Last updated: June 18, 2025
The average temperature in Brownsburg-Chatham, Canada during September hovers around 15°C (59°F). Expect minimums to dip to -1°C (31°F) and maximums to soar up to 31°C (88°F). Over the month, precipitation is around 93 mm (3.7 in) spread across roughly 9 days, and the average humidity sits comfortably at 78%.
In September in Brownsburg-Chatham, the average temperature is 15°C (59°F). Maximums can reach 31°C (88°F), while minimums can drop to as low as -1°C (31°F). This temperature range makes Brownsburg-Chatham a versatile destination for travelers seeking both warm and cool experiences.
In Brownsburg-Chatham in September, the precipitation amount is 93 mm (3.7 in) over the course of 9 days.
In Brownsburg-Chatham in September, humidity is 78%. With an average temperature of 15°C (59°F), this humidity feels like a warm, enveloping blanket that clings to your skin, making outdoor activities a bit more tiring and requiring frequent breaks for hydration as you explore the area.
In Brownsburg-Chatham in September, the maximum UV index is 7, which corresponds to the high Exposure Category. This means that the time to burn is approximately 25 minutes. For more detailed information, you can check the Hourly UV Index in Brownsburg-Chatham.
UV Risk Categories
Weather in Brownsburg-Chatham varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Brownsburg-Chatham, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | -10°C (15°F) | 84 mm (3.3 inches) | 93% | low |
| February Weather | -8°C (18°F) | 88 mm (3.5 inches) | 92% | moderate |
| March Weather | -3°C (26°F) | 91 mm (3.6 inches) | 86% | moderate |
| April Weather | 5°C (41°F) | 113 mm (4.5 inches) | 85% | high |
| May Weather | 13°C (55°F) | 112 mm (4.4 inches) | 80% | very high |
| June Weather | 18°C (64°F) | 105 mm (4.1 inches) | 74% | very high |
| July Weather | 21°C (70°F) | 127 mm (5.0 inches) | 76% | very high |
| August Weather | 19°C (67°F) | 108 mm (4.2 inches) | 75% | very high |
| September Weather | 15°C (59°F) | 93 mm (3.7 inches) | 78% | high |
| October Weather | 8°C (47°F) | 131 mm (5.2 inches) | 86% | moderate |
| November Weather | 0°C (32°F) | 108 mm (4.3 inches) | 88% | moderate |
| December Weather | -6°C (21°F) | 93 mm (3.7 inches) | 89% | low |