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August Weather in Casselman, Canada

Last updated: June 18, 2025

In Casselman, Canada, the average temperature in August hovers around 21°C (69°F). Expect fluctuations where the minimum can dip to 8°C (46°F) and the maximum can soar to 33°C (91°F). Rainfall averages 97 mm (3.8 in) spread over 13 days, complementing an average humidity of 67%. So, prepare for a diverse climate!

August Temperature in Casselman

In August in Casselman, the average temperature is 21°C (69°F), with maximum highs reaching 33°C (91°F) and minimum lows dipping to 8°C (46°F). This pleasant climate makes Casselman an ideal destination for travelers seeking a comfortable outdoor experience.

August Weather in Casselman: Daily Temperature Highs, Lows, and Averages

The chart illustrates August temperature patterns in Casselman, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Casselman, August typically has an average temperature of 21°C (69°F), with highs reaching up to 33°C (91°F) and lows dropping to around 8°C (46°F).
JanFebMarAprMayJunJulAugSepOctNovDec182029435766716961503424
Data source: Temperature data for Casselman 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.

August Precipitation in Casselman

In Casselman in August, the precipitation amount is 97 mm (3.8 in) over the course of 13 days.

August Precipitation Trends in Casselman

The chart displays monthly precipitation patterns in Casselman, with values for each month alongside August’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how August’s conditions compare to those of other months. In Casselman, August typically receives around 97 mm (3.8 inches) of precipitation spread over approximately 13 days.
JanFebMarAprMayJunJulAugSepOctNovDec818390118113101118977513410184
Data source: Precipitation data for August generated using information from the Copernicus Climate Change Service.
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August Humidity in Casselman

In Casselman in August, humidity is 67%. With an average temperature of 21°C (69°F), this humidity feels like a warm, enveloping embrace, making travel enjoyable yet slightly sticky. It encourages you to seek shade and sip cool drinks while exploring, adding a tropical flair to your adventures.

August Average Humidity in Casselman

This chart illustrates the average monthly humidity levels in Casselman, with August’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In August, average humidity in Casselman is approximately 67%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec93%93%86%82%75%68%69%67%72%83%88%89%
Data source: Humidity data for August generated using information from the Copernicus Climate Change Service.

August UV Index in Casselman

In Casselman in August, the maximum UV index is 8, which corresponds to a very high Exposure Category. This means that the time to burn is only 15 minutes. For more detailed information, you can refer to the Hourly UV Index in Casselman.

Maximum UV Index Levels in Casselman for August

The chart shows the monthly maximum UV Index (UVI) for Casselman in August, 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 August, the maximum UV index in Casselman typically reaches 8, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec245899987532
Data source: Casselman August 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 August Weather in Casselman Compares to Other Months

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

This table compares monthly weather conditions in Casselman, showing how August’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-8°C (18°F)81 mm (3.2 inches)93%low
February Weather-7°C (20°F)83 mm (3.3 inches)93%moderate
March Weather-2°C (29°F)90 mm (3.5 inches)86%moderate
April Weather6°C (43°F)118 mm (4.6 inches)82%very high
May Weather14°C (57°F)113 mm (4.4 inches)75%very high
June Weather19°C (66°F)101 mm (4.0 inches)68%very high
July Weather22°C (72°F)118 mm (4.6 inches)69%very high
August Weather21°C (69°F)97 mm (3.8 inches)67%very high
September Weather16°C (61°F)75 mm (2.9 inches)72%high
October Weather10°C (50°F)134 mm (5.3 inches)83%moderate
November Weather1°C (34°F)101 mm (4.0 inches)88%moderate
December Weather-5°C (24°F)84 mm (3.3 inches)89%low

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