September
Weather in September
Temperature
The transition into September involves a small decrease in the average high-temperature, dipping slightly from a warm 25.8°C (78.4°F) in August to an agreeable 21.4°C (70.5°F). Halton Hills, amid September nights, sees a noteworthy disparity from daily highs with an average temperature of 8.1°C (46.6°F).Rainfall
September is the month with the most rainfall. Rain falls for 11.7 days and accumulates 86mm (3.39") of precipitation.Snowfall
In Halton Hills, Canada, snow does not fall in June through September.Daylight
In Halton Hills, the average length of the day in September is 12h and 29min.On the first day of September, sunrise is at 6:44 am and sunset at 7:55 pm. On the last day of the month, sunrise is at 7:17 am and sunset at 7:02 pm EDT.
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Data Sources | Weather Forecasting & Climate
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Average temperature in September
Halton Hills, Canada
- Average high temperature in September: 21.4°C
The warmest month (with the highest average high temperature) is July (26.9°C).
The month with the lowest average high temperature is January (-1.7°C).
- Average low temperature in September: 8.1°C
The month with the highest average low temperature is July (13°C).
The coldest month (with the lowest average low temperature) is January (-10.9°C).
Average rainfall in September
Halton Hills, Canada
- Average rainfall in September: 86.2mm
The wettest month (with the highest rainfall) is September (86.2mm).
The driest month (with the least rainfall) is February (28.4mm).
Average rainfall days in September
Halton Hills, Canada
- Average rainfall days in September: 11.7 days
The month with the highest number of rainy days is October (12.2 days).
The months with the least rainy days are January and February (4.1 days).
Average snowfall in September
Halton Hills, Canada
- Average snowfall in September: 0mm
The month with the highest snowfall is January (381mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days in September
Halton Hills, Canada
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (9.4 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight in September
Halton Hills, Canada
- Average daylight in September: 12h and 3min
The month with the longest days is June (Average daylight: 15h and 24min).
The month with the shortest days is December (Average daylight: 9h and 0min).
