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May Weather in La Crosse, United States

Last updated: June 24, 2025

In May, the average temperature in La Crosse, United States is a comfortable 18°C (64°F). However, be prepared for temperature fluctuations, with minimums dipping to 1°C (34°F) and maximums soaring up to 35°C (96°F). During this month, expect an average precipitation of 138 mm (5.4 in) spread across 13 days, and a notable humidity level of 82%.

May Temperature in La Crosse

In May in La Crosse, the average temperature is 18°C (64°F). Maximums can reach 35°C (96°F), while minimums can dip as low as 1°C (34°F). Be prepared for a wide range of temperatures when traveling to La Crosse during this month.

May Weather in La Crosse: Daily Temperature Highs, Lows, and Averages

The chart illustrates May temperature patterns in La Crosse, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In La Crosse, May typically has an average temperature of 18°C (64°F), with highs reaching up to 35°C (96°F) and lows dropping to around 1°C (34°F).
JanFebMarAprMayJunJulAugSepOctNovDec313245536477817772554436
Data source: Temperature data for La Crosse 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.

May Precipitation in La Crosse

In La Crosse in May, the precipitation amount is 138 mm (5.4 in) over the course of 13 days.

May Precipitation Trends in La Crosse

The chart displays monthly precipitation patterns in La Crosse, 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 La Crosse, May typically receives around 138 mm (5.4 inches) of precipitation spread over approximately 13 days.
JanFebMarAprMayJunJulAugSepOctNovDec2420694413856677258672529
Data source: Precipitation data for May generated using information from the Copernicus Climate Change Service.
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May Humidity in La Crosse

In La Crosse in May humidity is 82%. With an average temperature of 18°C (64°F), this humidity feels like a warm, muggy embrace that can make exploring the area feel stifling, leaving travelers drenched in sweat and longing for respite in the shade.

May Average Humidity in La Crosse

This chart illustrates the average monthly humidity levels in La Crosse, 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 La Crosse is approximately 82%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec75%78%67%70%82%81%80%80%74%71%79%83%
Data source: Humidity data for May generated using information from the Copernicus Climate Change Service.

May UV Index in La Crosse

In La Crosse in May, the maximum UV index reaches 10, which corresponds to a very high Exposure Category. With a time to burn of just 15 minutes, it's crucial to take precautions. For more detailed information, you can check the Hourly UV Index in La Crosse.

Maximum UV Index Levels in La Crosse for May

The chart shows the monthly maximum UV Index (UVI) for La Crosse 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 La Crosse typically reaches 10, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec4579101111109743
Data source: La Crosse 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 La Crosse Compares to Other Months

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

This table compares monthly weather conditions in La Crosse, showing how May’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather0°C (32°F)24 mm (0.9 inches)74%moderate
February Weather0°C (33°F)20 mm (0.8 inches)78%moderate
March Weather7°C (46°F)69 mm (2.7 inches)67%high
April Weather12°C (54°F)44 mm (1.7 inches)70%very high
May Weather18°C (64°F)138 mm (5.4 inches)82%very high
June Weather25°C (77°F)56 mm (2.2 inches)81%extreme
July Weather27°C (81°F)67 mm (2.6 inches)80%extreme
August Weather25°C (78°F)72 mm (2.8 inches)80%very high
September Weather22°C (72°F)58 mm (2.3 inches)73%very high
October Weather13°C (56°F)67 mm (2.6 inches)71%high
November Weather7°C (44°F)25 mm (1.0 inches)79%moderate
December Weather2°C (36°F)29 mm (1.1 inches)83%moderate

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