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September Weather in Milton, Canada

Last updated: June 18, 2025

In September, the average temperature in Milton, Canada hovers around 17°C (63°F). Temperatures can swing from a cool 2°C (36°F) to a warm 32°C (90°F), making it a month of contrasts. Expect about 64 mm (2.5 in) of precipitation over approximately 10 days, and you’ll find the average humidity levels resting at a comfortable 81%.

September Temperature in Milton

In September in Milton, the average temperature is 17°C (63°F). Maximum temperatures can reach 32°C (90°F), while the minimum can drop as low as 2°C (36°F). This makes Milton a great destination for travelers seeking a variety of weather experiences, from warm days to cooler evenings.

September Weather in Milton: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Milton, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Milton, September typically has an average temperature of 17°C (63°F), with highs reaching up to 32°C (90°F) and lows dropping to around 2°C (36°F).
JanFebMarAprMayJunJulAugSepOctNovDec242533435666727063513730
Data source: Temperature data for Milton generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

September Precipitation in Milton

In Milton in September, the precipitation amount is 64 mm (2.5 in) over a span of 10 days.

September Precipitation Trends in Milton

The chart displays monthly precipitation patterns in Milton, with values for each month alongside September’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how September’s conditions compare to those of other months. In Milton, September typically receives around 64 mm (2.5 inches) of precipitation spread over approximately 10 days.
JanFebMarAprMayJunJulAugSepOctNovDec6772601029597798864987370
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Milton

In Milton in September humidity is 81%. With an average temperature of 17°C (63°F), this humidity feels like a warm blanket enveloping you, making travel slightly oppressive and calling for frequent breaks in air-conditioned spaces to recharge and enjoy your journey comfortably.

September Average Humidity in Milton

This chart illustrates the average monthly humidity levels in Milton, with September’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In September, average humidity in Milton is approximately 81%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec90%90%88%87%83%81%79%80%81%84%88%87%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Milton

In Milton 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 Milton.

Maximum UV Index Levels in Milton for September

The chart shows the monthly maximum UV Index (UVI) for Milton in September, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues. In September, the maximum UV index in Milton typically reaches 7, which falls under the high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec245899997532
Data source: Milton September UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

  •  Extreme (11+): Avoid the sun, stay in shade.
  •  Very High (8-10): Limit sun exposure.
  •  High (6-7): Use SPF 30+ and protective clothing.
  •  Moderate (3-5): Midday shade recommended.
  •  Low (0-2): No protection needed.

How September Weather in Milton Compares to Other Months

Weather in Milton varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Milton, focusing on differences in temperature, rainfall, humidity, and UV levels.

This table compares monthly weather conditions in Milton, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-4°C (24°F)67 mm (2.6 inches)90%low
February Weather-4°C (25°F)72 mm (2.8 inches)90%moderate
March Weather0°C (33°F)60 mm (2.4 inches)87%moderate
April Weather6°C (43°F)102 mm (4.0 inches)87%very high
May Weather13°C (56°F)95 mm (3.7 inches)82%very high
June Weather19°C (67°F)97 mm (3.8 inches)81%very high
July Weather22°C (72°F)79 mm (3.1 inches)79%very high
August Weather21°C (70°F)87 mm (3.4 inches)80%very high
September Weather17°C (63°F)64 mm (2.5 inches)81%high
October Weather11°C (52°F)98 mm (3.9 inches)84%moderate
November Weather3°C (37°F)73 mm (2.9 inches)88%moderate
December Weather-1°C (30°F)70 mm (2.8 inches)87%low

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