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May Weather in Saint Jo, United States

Last updated: June 24, 2025

In May, the average temperature in Saint Jo, United States hovers around 23°C (73°F). However, be prepared for fluctuations, as temperatures can dip to a chilly 6°C (44°F) and soar up to a scorching 37°C (99°F). During this period, expect about 119 mm (4.7 in) of precipitation spread over 12 days, and with an average humidity of 80%, the air will feel quite muggy. Stay hydrated and enjoy your visit!

May Temperature in Saint Jo

In May in Saint Jo, the average temperature is 23°C (73°F). Maximums can reach 37°C (99°F), while minimums can drop as low as 6°C (44°F). These temperature variations make Saint Jo an ideal destination for travelers seeking both warmth and cooler escapes.

May Weather in Saint Jo: Daily Temperature Highs, Lows, and Averages

The chart illustrates May temperature patterns in Saint Jo, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Saint Jo, May typically has an average temperature of 23°C (73°F), with highs reaching up to 37°C (99°F) and lows dropping to around 6°C (44°F).
JanFebMarAprMayJunJulAugSepOctNovDec444658637381858478665449
Data source: Temperature data for Saint Jo 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 Saint Jo

In Saint Jo in May, the total precipitation amount is 119 mm (4.7 in), falling over a span of 12 days.

May Precipitation Trends in Saint Jo

The chart displays monthly precipitation patterns in Saint Jo, 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 Saint Jo, May typically receives around 119 mm (4.7 inches) of precipitation spread over approximately 12 days.
JanFebMarAprMayJunJulAugSepOctNovDec47728787119793677911144451
Data source: Precipitation data for May generated using information from the Copernicus Climate Change Service.
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May Humidity in Saint Jo

In Saint Jo in May humidity is 80%. With an average temperature of 23°C (73°F), this humidity feels like a warm blanket enveloping you, making outdoor activities slightly sticky and requiring frequent breaks in shaded areas to stay comfortable while exploring.

May Average Humidity in Saint Jo

This chart illustrates the average monthly humidity levels in Saint Jo, 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 Saint Jo is approximately 80%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec77%76%74%75%80%80%75%67%64%70%82%85%
Data source: Humidity data for May generated using information from the Copernicus Climate Change Service.

May UV Index in Saint Jo

In Saint Jo in May, the maximum UV index reaches 11, which corresponds to an extreme Exposure Category. With a time to burn of just 10 minutes, it's essential to take precautions. For more details, you can check the Hourly UV Index in Saint Jo.

Maximum UV Index Levels in Saint Jo for May

The chart shows the monthly maximum UV Index (UVI) for Saint Jo 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 Saint Jo typically reaches 11, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec468101111111110864
Data source: Saint Jo 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 Saint Jo Compares to Other Months

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

This table compares monthly weather conditions in Saint Jo, showing how May’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather7°C (44°F)47 mm (1.9 inches)77%moderate
February Weather8°C (46°F)72 mm (2.8 inches)76%high
March Weather14°C (58°F)87 mm (3.4 inches)74%very high
April Weather17°C (64°F)87 mm (3.4 inches)75%very high
May Weather23°C (73°F)119 mm (4.7 inches)80%extreme
June Weather27°C (81°F)79 mm (3.1 inches)80%extreme
July Weather29°C (85°F)36 mm (1.4 inches)75%extreme
August Weather29°C (84°F)77 mm (3.0 inches)67%extreme
September Weather25°C (78°F)90 mm (3.6 inches)64%very high
October Weather19°C (66°F)114 mm (4.5 inches)70%very high
November Weather12°C (54°F)44 mm (1.7 inches)82%high
December Weather9°C (49°F)51 mm (2.0 inches)85%moderate

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