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May Weather in Jefferson City, United States

Last updated: June 24, 2025

In May, the average temperature in Jefferson City, United States is a comfortable 20°C (68°F). However, be prepared for some variability, as temperatures can drop to a minimum of 2°C (36°F) or rise to a maximum of 33°C (91°F). Expect about 104 mm (4.1 in) of precipitation spread over 12 days, and don’t forget your humidity-friendly gear, with an average humidity hovering around 85%.

May Temperature in Jefferson City

In May in Jefferson City, the average temperature is 20°C (68°F), with maximums reaching 33°C (91°F) and minimums dropping as low as 2°C (36°F). This makes it a perfect time for travelers to enjoy a variety of outdoor activities, while also being prepared for cooler evenings.

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

The chart illustrates May temperature patterns in Jefferson City, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Jefferson City, May typically has an average temperature of 20°C (68°F), with highs reaching up to 33°C (91°F) and lows dropping to around 2°C (36°F).
JanFebMarAprMayJunJulAugSepOctNovDec414652596874787773634844
Data source: Temperature data for Jefferson 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 Jefferson City

In Jefferson City in May, the total precipitation amount is 104 mm (4.1 in) spread over 12 days.

May Precipitation Trends in Jefferson City

The chart displays monthly precipitation patterns in Jefferson 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 Jefferson City, May typically receives around 104 mm (4.1 inches) of precipitation spread over approximately 12 days.
JanFebMarAprMayJunJulAugSepOctNovDec901441401251049894988211874126
Data source: Precipitation data for May generated using information from the Copernicus Climate Change Service.
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May Humidity in Jefferson City

In Jefferson City in May, humidity is 85%. With an average temperature of 20°C (68°F), this humidity feels like a warm, sticky blanket enveloping you, making outdoor activities quite uncomfortable and prompting travelers to seek shade and hydration more frequently.

May Average Humidity in Jefferson City

This chart illustrates the average monthly humidity levels in Jefferson 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 Jefferson City is approximately 85%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec86%86%86%82%85%85%83%76%76%80%88%88%
Data source: Humidity data for May generated using information from the Copernicus Climate Change Service.

May UV Index in Jefferson City

In Jefferson City 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 Jefferson City.

Maximum UV Index Levels in Jefferson City for May

The chart shows the monthly maximum UV Index (UVI) for Jefferson 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 Jefferson City typically reaches 11, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec36810111111109753
Data source: Jefferson 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 Jefferson City Compares to Other Months

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

This table compares monthly weather conditions in Jefferson City, showing how May’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather5°C (41°F)90 mm (3.5 inches)86%moderate
February Weather8°C (46°F)144 mm (5.6 inches)86%high
March Weather11°C (52°F)140 mm (5.5 inches)86%very high
April Weather15°C (59°F)125 mm (4.9 inches)82%very high
May Weather20°C (68°F)104 mm (4.1 inches)85%extreme
June Weather23°C (75°F)97 mm (3.8 inches)85%extreme
July Weather26°C (79°F)94 mm (3.7 inches)83%extreme
August Weather25°C (77°F)98 mm (3.9 inches)76%very high
September Weather23°C (73°F)82 mm (3.2 inches)76%very high
October Weather17°C (63°F)118 mm (4.7 inches)80%high
November Weather9°C (48°F)74 mm (2.9 inches)88%moderate
December Weather7°C (44°F)126 mm (5.0 inches)88%moderate

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