nomadseason

May Weather in Lethbridge, Canada

Last updated: June 18, 2025

In Lethbridge, Canada, the average temperature in May hovers around 12°C (53°F), with a minimum dipping to -6°C (22°F) and a maximum soaring to 30°C (86°F). During this month, you can expect 56 mm (2.2 in) of precipitation spread across 8 days, coupled with an average humidity level of 78%. Stay prepared for a mix of weather!

May Temperature in Lethbridge

In May in Lethbridge, the average temperature is 12°C (53°F). Maximum temperatures can reach 30°C (86°F), while minimums can drop as low as -6°C (22°F). It's advisable to pack versatile clothing to accommodate both warm days and chilly nights while traveling.

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

The chart illustrates May 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, May typically has an average temperature of 12°C (53°F), with highs reaching up to 30°C (86°F) and lows dropping to around -6°C (22°F).
JanFebMarAprMayJunJulAugSepOctNovDec241730405362676556423325
Data source: Temperature data for Lethbridge generated using information from the Copernicus Climate Change Service.
Choose your preferred temperature unit
The average of daily temperatures (24 hours) calculated across all days in the month.

May Precipitation in Lethbridge

In Lethbridge in May, the precipitation amount is 56 mm (2.2 in) over the course of 8 days.

May Precipitation Trends in Lethbridge

The chart displays monthly precipitation patterns in Lethbridge, with values for each month alongside May’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how May’s conditions compare to those of other months. In Lethbridge, May typically receives around 56 mm (2.2 inches) of precipitation spread over approximately 8 days.
JanFebMarAprMayJunJulAugSepOctNovDec103123355662282535353422
Data source: Precipitation data for May generated using information from the Copernicus Climate Change Service.
Choose your preferred precipitation unit

May Humidity in Lethbridge

In Lethbridge in May, humidity is 78%. With an average temperature of 12°C (53°F), this humidity feels like a damp chill that lingers in the air, making it essential to wear layers while exploring the sights, as the cool moisture can seep into your bones and leave you feeling a bit uncomfortable if not properly dressed for the weather.

May Average Humidity in Lethbridge

This chart illustrates the average monthly humidity levels in Lethbridge, with May’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In May, average humidity in Lethbridge is approximately 78%, 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 May generated using information from the Copernicus Climate Change Service.

May UV Index in Lethbridge

In Lethbridge in May, 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 May

The chart shows the monthly maximum UV Index (UVI) for Lethbridge in May, 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 May, the maximum UV index in Lethbridge typically reaches 8, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec235689987422
Data source: Lethbridge May 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 May 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 May’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 May’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

Compare Lethbridge's Climate with Cities Worldwide