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May Weather in Caldwell, United States

Last updated: June 24, 2025

In Caldwell, United States, the average temperature in May is a warm 25°C (77°F), with minimums dipping to 9°C (49°F) and maximums soaring up to 37°C (99°F). Expect a fair amount of rain, with an average precipitation of 156 mm (6.1 in) spread over about 14 days. The average humidity lingers at a high 81%, creating a cozy yet damp atmosphere.

May Temperature in Caldwell

In May in Caldwell, the average temperature is 25°C (77°F). Maximum temperatures can reach up to 37°C (99°F), while the minimum can dip as low as 9°C (49°F). This warm climate makes Caldwell an ideal destination for travelers seeking sunny days and outdoor activities.

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

The chart illustrates May temperature patterns in Caldwell, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Caldwell, May typically has an average temperature of 25°C (77°F), with highs reaching up to 37°C (99°F) and lows dropping to around 9°C (49°F).
JanFebMarAprMayJunJulAugSepOctNovDec525464687782858681716055
Data source: Temperature data for Caldwell 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 Caldwell

In Caldwell in May, the precipitation amount is 156 mm (6.1 in) over the course of 14 days.

May Precipitation Trends in Caldwell

The chart displays monthly precipitation patterns in Caldwell, 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 Caldwell, May typically receives around 156 mm (6.1 inches) of precipitation spread over approximately 14 days.
JanFebMarAprMayJunJulAugSepOctNovDec7073751371561158511912710272101
Data source: Precipitation data for May generated using information from the Copernicus Climate Change Service.
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May Humidity in Caldwell

In Caldwell in May, humidity is 81%. With an average temperature of 25°C (77°F), this humidity feels like walking through a warm, thick blanket, making traveling quite challenging as you may feel sticky and sluggish, requiring frequent breaks to stay refreshed and hydrated.

May Average Humidity in Caldwell

This chart illustrates the average monthly humidity levels in Caldwell, 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 Caldwell 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 Caldwell

In Caldwell 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 Caldwell.

Maximum UV Index Levels in Caldwell for May

The chart shows the monthly maximum UV Index (UVI) for Caldwell 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 Caldwell typically reaches 11, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec589111112121110865
Data source: Caldwell 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 Caldwell Compares to Other Months

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

This table compares monthly weather conditions in Caldwell, showing how May’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather11°C (52°F)70 mm (2.8 inches)79%moderate
February Weather12°C (54°F)73 mm (2.9 inches)80%very high
March Weather18°C (64°F)75 mm (3.0 inches)78%very high
April Weather20°C (69°F)137 mm (5.4 inches)79%extreme
May Weather25°C (77°F)156 mm (6.1 inches)81%extreme
June Weather28°C (83°F)115 mm (4.5 inches)77%extreme
July Weather29°C (85°F)85 mm (3.4 inches)71%extreme
August Weather30°C (87°F)119 mm (4.7 inches)67%extreme
September Weather27°C (81°F)127 mm (5.0 inches)69%very high
October Weather22°C (71°F)102 mm (4.0 inches)73%very high
November Weather16°C (61°F)72 mm (2.8 inches)82%high
December Weather13°C (56°F)101 mm (4.0 inches)87%moderate

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