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May Weather in Onawa, United States

Last updated: June 24, 2025

In May, the average temperature in Onawa, United States hovers around 16°C (62°F). However, expect a range with minimums dipping to 2°C (35°F) and highs soaring to 36°C (96°F). Precipitation levels reach around 142 mm (5.6 in) over 15 days, contributing to an average humidity of 78%. Be prepared for a mix of weather conditions!

May Temperature in Onawa

In May in Onawa, the average temperature is 16°C (62°F). Maximum temperatures can reach 36°C (96°F), while minimums can dip as low as 2°C (35°F). It's advisable to pack for both warm days and cooler nights when traveling to Onawa during this month.

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

The chart illustrates May temperature patterns in Onawa, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Onawa, May typically has an average temperature of 16°C (62°F), with highs reaching up to 36°C (96°F) and lows dropping to around 2°C (35°F).
JanFebMarAprMayJunJulAugSepOctNovDec242439496275777368523830
Data source: Temperature data for Onawa 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 Onawa

In Onawa in May, the total precipitation amount is 142 mm (5.6 in) spread over a period of 15 days.

May Precipitation Trends in Onawa

The chart displays monthly precipitation patterns in Onawa, 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 Onawa, May typically receives around 142 mm (5.6 inches) of precipitation spread over approximately 15 days.
JanFebMarAprMayJunJulAugSepOctNovDec273383711421146411091942940
Data source: Precipitation data for May generated using information from the Copernicus Climate Change Service.
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May Humidity in Onawa

In Onawa in May, humidity is 78%. With an average temperature of 16°C (62°F), this humidity feels like a warm blanket wrapping around you, making outdoor activities enjoyable yet slightly sticky. Travelers may find the weather pleasantly mild, though they'll appreciate having light, breathable clothing on hand to stay comfortable while exploring.

May Average Humidity in Onawa

This chart illustrates the average monthly humidity levels in Onawa, 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 Onawa is approximately 78%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec76%80%73%75%78%82%83%81%75%75%82%83%
Data source: Humidity data for May generated using information from the Copernicus Climate Change Service.

May UV Index in Onawa

In Onawa in May, the maximum UV index is 9, which corresponds to a very high Exposure Category. The time to burn is just 15 minutes, so it's essential to take precautions. For detailed information, you can check the Hourly UV Index in Onawa.

Maximum UV Index Levels in Onawa for May

The chart shows the monthly maximum UV Index (UVI) for Onawa 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 Onawa typically reaches 9, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec34589111098642
Data source: Onawa 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 Onawa Compares to Other Months

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

This table compares monthly weather conditions in Onawa, showing how May’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-5°C (24°F)27 mm (1.1 inches)76%moderate
February Weather-5°C (24°F)33 mm (1.3 inches)80%moderate
March Weather4°C (40°F)83 mm (3.3 inches)73%moderate
April Weather9°C (49°F)71 mm (2.8 inches)74%very high
May Weather16°C (62°F)142 mm (5.6 inches)78%very high
June Weather24°C (75°F)114 mm (4.5 inches)82%extreme
July Weather25°C (77°F)64 mm (2.5 inches)83%very high
August Weather23°C (74°F)110 mm (4.3 inches)80%very high
September Weather20°C (69°F)91 mm (3.6 inches)75%very high
October Weather11°C (52°F)94 mm (3.7 inches)75%high
November Weather4°C (39°F)29 mm (1.1 inches)82%moderate
December Weather-1°C (30°F)40 mm (1.6 inches)83%low

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