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May Weather in Oklahoma City, United States

Last updated: June 24, 2025

In Oklahoma City, United States, the average temperature in May hovers around 21°C (70°F). However, temperatures can dip to a chilly 6°C (43°F) and soar up to a sizzling 34°C (94°F). Expect precipitation of approximately 137 mm (5.4 in) spread over 12 days, accompanied by a high average humidity of 82%.

May Temperature in Oklahoma City

In May in Oklahoma City, the average temperature is 21°C (70°F), with maximums reaching 34°C (94°F) and minimums dropping as low as 6°C (43°F). This varied climate makes it an ideal destination for travelers looking to experience a mix of warm days and cooler evenings.

May Weather in Oklahoma City: Daily Temperature Highs, Lows, and Averages

The chart illustrates May temperature patterns in Oklahoma City, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Oklahoma City, May typically has an average temperature of 21°C (70°F), with highs reaching up to 34°C (94°F) and lows dropping to around 6°C (43°F).
JanFebMarAprMayJunJulAugSepOctNovDec394154596979838175625044
Data source: Temperature data for Oklahoma City 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 Oklahoma City

In Oklahoma City in May, the precipitation amount is 137 mm (5.4 in) that occurs over the course of 12 days.

May Precipitation Trends in Oklahoma City

The chart displays monthly precipitation patterns in Oklahoma City, 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 Oklahoma City, May typically receives around 137 mm (5.4 inches) of precipitation spread over approximately 12 days.
JanFebMarAprMayJunJulAugSepOctNovDec474684124137966567851083036
Data source: Precipitation data for May generated using information from the Copernicus Climate Change Service.
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May Humidity in Oklahoma City

In Oklahoma City in May, humidity is 82%. With an average temperature of 21°C (70°F), this humidity feels like a warm, sticky embrace that can quickly lead to discomfort for travelers, making outdoor activities less enjoyable and requiring frequent breaks for hydration.

May Average Humidity in Oklahoma City

This chart illustrates the average monthly humidity levels in Oklahoma City, 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 Oklahoma City is approximately 82%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec76%76%70%72%82%82%80%72%64%71%81%84%
Data source: Humidity data for May generated using information from the Copernicus Climate Change Service.

May UV Index in Oklahoma City

In Oklahoma City 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 Oklahoma City.

Maximum UV Index Levels in Oklahoma City for May

The chart shows the monthly maximum UV Index (UVI) for Oklahoma City 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 Oklahoma City typically reaches 10, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec46810101111119754
Data source: Oklahoma City 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 Oklahoma City Compares to Other Months

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

This table compares monthly weather conditions in Oklahoma City, showing how May’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather4°C (39°F)47 mm (1.8 inches)76%moderate
February Weather5°C (41°F)46 mm (1.8 inches)76%high
March Weather12°C (54°F)84 mm (3.3 inches)70%very high
April Weather15°C (59°F)124 mm (4.9 inches)72%very high
May Weather21°C (70°F)137 mm (5.4 inches)82%very high
June Weather26°C (79°F)96 mm (3.8 inches)82%extreme
July Weather28°C (83°F)65 mm (2.6 inches)80%extreme
August Weather27°C (81°F)67 mm (2.6 inches)72%extreme
September Weather24°C (76°F)85 mm (3.3 inches)64%very high
October Weather17°C (62°F)108 mm (4.3 inches)71%high
November Weather10°C (50°F)30 mm (1.2 inches)81%moderate
December Weather7°C (44°F)36 mm (1.4 inches)84%moderate

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