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May Weather in Thornton, United States

Last updated: June 24, 2025

In May, the average temperature in Thornton, United States is a pleasant 24°C (76°F). Expect a range of temperatures with a minimum of 8°C (47°F) and a maximum soaring to 37°C (99°F). Rainfall is likely, with 168 mm (6.6 in) spread over 14 days, contributing to an average humidity of 81%. Prepare accordingly for a mix of sunshine and showers!

May Temperature in Thornton

In May in Thornton, the average temperature is 24°C (76°F). Maximums can reach 37°C (99°F), while minimums can dip to as low as 8°C (47°F). Be sure to pack accordingly, as the weather can vary significantly, making it essential to dress in layers.

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

The chart illustrates May temperature patterns in Thornton, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Thornton, May typically has an average temperature of 24°C (76°F), with highs reaching up to 37°C (99°F) and lows dropping to around 8°C (47°F).
JanFebMarAprMayJunJulAugSepOctNovDec505262677582868681705954
Data source: Temperature data for Thornton 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 Thornton

In Thornton in May, the total precipitation amount is 168 mm (6.6 in) over a span of 14 days.

May Precipitation Trends in Thornton

The chart displays monthly precipitation patterns in Thornton, 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 Thornton, May typically receives around 168 mm (6.6 inches) of precipitation spread over approximately 14 days.
JanFebMarAprMayJunJulAugSepOctNovDec7810297116168755984981096791
Data source: Precipitation data for May generated using information from the Copernicus Climate Change Service.
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May Humidity in Thornton

In Thornton in May, humidity is 81%. With an average temperature of 24°C (76°F), this humidity feels like a warm, muggy embrace that can make outdoor activities feel exhausting, leaving travelers in need of frequent breaks and plenty of hydration.

May Average Humidity in Thornton

This chart illustrates the average monthly humidity levels in Thornton, 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 Thornton is approximately 81%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec80%80%78%79%81%77%71%67%69%73%82%87%
Data source: Humidity data for May generated using information from the Copernicus Climate Change Service.

May UV Index in Thornton

In Thornton 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 Thornton.

Maximum UV Index Levels in Thornton for May

The chart shows the monthly maximum UV Index (UVI) for Thornton 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 Thornton typically reaches 11, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec478111111121110864
Data source: Thornton 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 Thornton Compares to Other Months

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

This table compares monthly weather conditions in Thornton, showing how May’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather10°C (50°F)78 mm (3.1 inches)79%moderate
February Weather11°C (52°F)102 mm (4.0 inches)80%high
March Weather17°C (63°F)97 mm (3.8 inches)78%very high
April Weather19°C (67°F)116 mm (4.6 inches)79%extreme
May Weather24°C (76°F)168 mm (6.6 inches)81%extreme
June Weather28°C (82°F)75 mm (3.0 inches)77%extreme
July Weather30°C (86°F)59 mm (2.3 inches)71%extreme
August Weather30°C (87°F)84 mm (3.3 inches)67%extreme
September Weather27°C (81°F)98 mm (3.9 inches)69%very high
October Weather21°C (71°F)109 mm (4.3 inches)73%very high
November Weather15°C (59°F)67 mm (2.6 inches)82%high
December Weather12°C (54°F)91 mm (3.6 inches)87%moderate

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