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August Weather in Lethbridge, Canada

Last updated: June 18, 2025

In Lethbridge, Canada, the average temperature in August hovers around 19°C (66°F). However, temperatures can fluctuate between a chilly 3°C (39°F) and a scorching 40°C (103°F). During this month, you can expect approximately 25 mm (1.0 in) of precipitation over about 4 days, and the average humidity sits at a comfortable 69%.

August Temperature in Lethbridge

In August in Lethbridge, the average temperature is 19°C (66°F). Maximums can reach 40°C (103°F) and minimums can be as low as 3°C (39°F). Be prepared for a wide range of temperatures when traveling during this time.

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

The chart illustrates August temperature patterns in Lethbridge, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Lethbridge, August typically has an average temperature of 19°C (66°F), with highs reaching up to 40°C (103°F) and lows dropping to around 3°C (39°F).
JanFebMarAprMayJunJulAugSepOctNovDec241730405362676556423325
Data source: Temperature data for Lethbridge 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 Lethbridge

In Lethbridge in August, the precipitation amount is 25 mm (1.0 in) over the course of 4 days.

August Precipitation Trends in Lethbridge

The chart displays monthly precipitation patterns in Lethbridge, 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 Lethbridge, August typically receives around 25 mm (1.0 inches) of precipitation spread over approximately 4 days.
JanFebMarAprMayJunJulAugSepOctNovDec103123355662282535353422
Data source: Precipitation data for August generated using information from the Copernicus Climate Change Service.
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August Humidity in Lethbridge

In Lethbridge in August humidity is 69%. With an average temperature of 19°C (66°F), this humidity feels like a warm embrace, making travel slightly uncomfortable as the air hangs heavy and the heat clings to your skin, urging you to seek shade or refreshment often.

August Average Humidity in Lethbridge

This chart illustrates the average monthly humidity levels in Lethbridge, 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 Lethbridge is approximately 69%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec93%91%88%84%78%77%79%69%69%78%87%94%
Data source: Humidity data for August generated using information from the Copernicus Climate Change Service.

August UV Index in Lethbridge

In Lethbridge 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 Lethbridge.

Maximum UV Index Levels in Lethbridge for August

The chart shows the monthly maximum UV Index (UVI) for Lethbridge 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 Lethbridge typically reaches 8, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec235689987422
Data source: Lethbridge 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 Lethbridge Compares to Other Months

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

This table compares monthly weather conditions in Lethbridge, showing how August’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-5°C (24°F)10 mm (0.4 inches)93%low
February Weather-9°C (17°F)31 mm (1.2 inches)91%moderate
March Weather-1°C (31°F)23 mm (0.9 inches)88%moderate
April Weather4°C (40°F)35 mm (1.4 inches)84%high
May Weather12°C (53°F)56 mm (2.2 inches)78%very high
June Weather16°C (62°F)62 mm (2.4 inches)77%very high
July Weather19°C (67°F)28 mm (1.1 inches)79%very high
August Weather19°C (66°F)25 mm (1.0 inches)69%very high
September Weather13°C (56°F)35 mm (1.4 inches)69%high
October Weather5°C (42°F)35 mm (1.4 inches)78%moderate
November Weather1°C (33°F)34 mm (1.3 inches)87%low
December Weather-4°C (26°F)22 mm (0.8 inches)94%low

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