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May Weather in Hartley, United States

Last updated: June 24, 2025

In May, the average temperature in Hartley, United States is a pleasant 19°C (66°F). However, be prepared for a range—temperatures can dip as low as 0°C (32°F) and soar up to 36°C (97°F). Expect a total precipitation of 58 mm (2.3 in) spread over approximately 7 days, while the average humidity lingers around 69%. Whether you're looking for warm days or cool evenings, May in Hartley has something for everyone!

May Temperature in Hartley

In May in Hartley, the average temperature is 19°C (66°F). Maximum temperatures can reach 36°C (97°F), while the minimum can drop as low as 0°C (32°F). Be prepared for a wide range of temperatures when traveling to Hartley during this month.

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

The chart illustrates May temperature patterns in Hartley, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Hartley, May typically has an average temperature of 19°C (66°F), with highs reaching up to 36°C (97°F) and lows dropping to around 0°C (32°F).
JanFebMarAprMayJunJulAugSepOctNovDec373849556676797771574739
Data source: Temperature data for Hartley 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 Hartley

In Hartley in May, the precipitation amount is 58 mm (2.3 in) over the course of 7 days.

May Precipitation Trends in Hartley

The chart displays monthly precipitation patterns in Hartley, 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 Hartley, May typically receives around 58 mm (2.3 inches) of precipitation spread over approximately 7 days.
JanFebMarAprMayJunJulAugSepOctNovDec151039375943295431501214
Data source: Precipitation data for May generated using information from the Copernicus Climate Change Service.
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May Humidity in Hartley

In Hartley in May humidity is 69%. With an average temperature of 19°C (66°F), this humidity feels like a warm embrace, making travel slightly uncomfortable as the air hangs heavy and the heat clings to your skin, urging you to seek shade or refreshment often.

May Average Humidity in Hartley

This chart illustrates the average monthly humidity levels in Hartley, 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 Hartley is approximately 69%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec74%75%61%62%69%74%75%78%76%76%80%77%
Data source: Humidity data for May generated using information from the Copernicus Climate Change Service.

May UV Index in Hartley

In Hartley 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 Hartley.

Maximum UV Index Levels in Hartley for May

The chart shows the monthly maximum UV Index (UVI) for Hartley 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 Hartley typically reaches 11, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec468111112121110754
Data source: Hartley 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 Hartley Compares to Other Months

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

This table compares monthly weather conditions in Hartley, showing how May’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather3°C (37°F)15 mm (0.6 inches)74%moderate
February Weather3°C (39°F)10 mm (0.4 inches)75%high
March Weather10°C (50°F)39 mm (1.5 inches)61%very high
April Weather13°C (56°F)37 mm (1.5 inches)61%extreme
May Weather19°C (66°F)58 mm (2.3 inches)69%extreme
June Weather24°C (76°F)43 mm (1.7 inches)74%extreme
July Weather26°C (79°F)29 mm (1.1 inches)75%extreme
August Weather25°C (77°F)54 mm (2.1 inches)78%extreme
September Weather22°C (71°F)31 mm (1.2 inches)76%very high
October Weather14°C (57°F)50 mm (2.0 inches)76%high
November Weather8°C (47°F)11 mm (0.5 inches)80%moderate
December Weather4°C (40°F)14 mm (0.6 inches)77%moderate

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