Last updated: June 18, 2025
In Peterborough, Canada, the average temperature in September hovers around 17°C (62°F). Temperatures can vary significantly, dipping as low as 1°C (34°F) and soaring up to 32°C (90°F). Expect approximately 82 mm (3.2 in) of precipitation spread over 9 days, accompanied by an average humidity level of 74%.
In September, in Peterborough, the average temperature is 17°C (62°F). Maximum temperatures can reach 32°C (90°F), while minimums can drop to as low as 1°C (34°F). This makes Peterborough an ideal destination for travelers seeking a range of experiences, from warm days to cool, refreshing nights.
In Peterborough in September, the total precipitation amount is 82 mm (3.2 in), occurring over a span of 9 days.
In Peterborough in September, humidity is 74%. With an average temperature of 17°C (62°F), this humidity feels like a warm blanket enveloping you, making travel slightly uncomfortable as it can cause perspiration and a heavy feeling in the air, especially during outdoor activities.
In Peterborough 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 Peterborough.
UV Risk Categories
Weather in Peterborough varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Peterborough, focusing on differences in temperature, rainfall, humidity, and UV levels.
Temperature | Precipitation | Humidity | UV | |
---|---|---|---|---|
January Weather | -6°C (21°F) | 67 mm (2.7 inches) | 93% | low |
February Weather | -5°C (23°F) | 72 mm (2.8 inches) | 94% | moderate |
March Weather | -1°C (31°F) | 65 mm (2.6 inches) | 87% | moderate |
April Weather | 6°C (42°F) | 116 mm (4.6 inches) | 82% | very high |
May Weather | 13°C (56°F) | 105 mm (4.1 inches) | 74% | very high |
June Weather | 19°C (66°F) | 99 mm (3.9 inches) | 68% | very high |
July Weather | 22°C (72°F) | 93 mm (3.7 inches) | 67% | very high |
August Weather | 21°C (69°F) | 118 mm (4.6 inches) | 67% | very high |
September Weather | 17°C (62°F) | 82 mm (3.2 inches) | 74% | high |
October Weather | 10°C (50°F) | 110 mm (4.4 inches) | 83% | moderate |
November Weather | 2°C (36°F) | 85 mm (3.3 inches) | 89% | moderate |
December Weather | -3°C (27°F) | 74 mm (2.9 inches) | 91% | low |