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October Weather in Ancaster, Canada

Last updated: June 18, 2025

In October, the average temperature in Ancaster, Canada is a comfortable 11°C (53°F). However, be prepared for a range: temperatures can dip to a chilly -2°C (29°F) or rise as high as 29°C (85°F). Expect 101 mm (4.0 in) of precipitation spread over about 14 days, contributing to a high average humidity of 84%. Rain or shine, it’s a month full of surprises!

October Temperature in Ancaster

In October in Ancaster, the average temperature is 11°C (53°F). The maximum can reach 29°C (85°F), while the minimum can drop to as low as -2°C (29°F). Packing layers is essential for travelers during this time to ensure comfort in varying temperatures.

October Weather in Ancaster: Daily Temperature Highs, Lows, and Averages

The chart illustrates October temperature patterns in Ancaster, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Ancaster, October typically has an average temperature of 11°C (53°F), with highs reaching up to 29°C (85°F) and lows dropping to around -2°C (29°F).
JanFebMarAprMayJunJulAugSepOctNovDec252634445767727064523831
Data source: Temperature data for Ancaster 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.

October Precipitation in Ancaster

In Ancaster in October, the precipitation amount is 101 mm (4.0 in) over the course of 14 days.

October Precipitation Trends in Ancaster

The chart displays monthly precipitation patterns in Ancaster, with values for each month alongside October’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how October’s conditions compare to those of other months. In Ancaster, October typically receives around 101 mm (4.0 inches) of precipitation spread over approximately 14 days.
JanFebMarAprMayJunJulAugSepOctNovDec69736510396989389691017573
Data source: Precipitation data for October generated using information from the Copernicus Climate Change Service.
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October Humidity in Ancaster

In Ancaster in October, humidity is 84%. With an average temperature of 11°C (53°F), this humidity feels like a damp chill that seeps into your bones, making outdoor exploration a bit uncomfortable and requiring extra layers to stay warm while traveling.

October Average Humidity in Ancaster

This chart illustrates the average monthly humidity levels in Ancaster, with October’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In October, average humidity in Ancaster is approximately 84%, 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 October generated using information from the Copernicus Climate Change Service.

October UV Index in Ancaster

In Ancaster in October, the maximum UV index reaches 5, which corresponds to a moderate Exposure Category. Under these conditions, the estimated time to burn is approximately 30 minutes. For more details, you can check the Hourly UV Index in Ancaster.

Maximum UV Index Levels in Ancaster for October

The chart shows the monthly maximum UV Index (UVI) for Ancaster in October, 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 October, the maximum UV index in Ancaster typically reaches 5, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec2458910997532
Data source: Ancaster October 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 October Weather in Ancaster Compares to Other Months

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

This table compares monthly weather conditions in Ancaster, showing how October’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-4°C (25°F)69 mm (2.7 inches)90%low
February Weather-3°C (26°F)73 mm (2.9 inches)90%moderate
March Weather1°C (34°F)64 mm (2.5 inches)87%moderate
April Weather7°C (44°F)103 mm (4.1 inches)87%very high
May Weather14°C (57°F)96 mm (3.8 inches)82%very high
June Weather19°C (67°F)98 mm (3.9 inches)81%very high
July Weather22°C (73°F)93 mm (3.6 inches)79%very high
August Weather21°C (71°F)89 mm (3.5 inches)80%very high
September Weather18°C (64°F)69 mm (2.7 inches)81%high
October Weather11°C (53°F)101 mm (4.0 inches)84%moderate
November Weather3°C (38°F)75 mm (2.9 inches)88%moderate
December Weather-1°C (31°F)73 mm (2.9 inches)87%low

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