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May Weather in Caldwell, United States

Last updated: June 24, 2025

In Caldwell, United States, the average temperature in May hovers around 17°C (63°F), with a minimum dipping to 1°C (34°F) and a maximum soaring to 37°C (99°F). Expect about 28 mm (1.1 in) of precipitation spread over 7 days, contributing to an average humidity of 71%. Be prepared for a mix of warm days and cooler nights!

May Temperature in Caldwell

In May in Caldwell, the average temperature is 17°C (63°F), with maximums reaching 37°C (99°F) and minimums dropping as low as 1°C (34°F). This makes it a versatile time for travelers, offering both warm and cooler conditions to suit various 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 17°C (63°F), with highs reaching up to 37°C (99°F) and lows dropping to around 1°C (34°F).
JanFebMarAprMayJunJulAugSepOctNovDec343747546372827968544335
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 28 mm (1.1 in) over a period of 7 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 28 mm (1.1 inches) of precipitation spread over approximately 7 days.
JanFebMarAprMayJunJulAugSepOctNovDec424331292816169182833
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 71%. With an average temperature of 17°C (63°F), this humidity feels like a warm embrace, making outdoor activities enjoyable yet a bit sticky, so travelers should stay hydrated and take breaks in the shade.

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 71%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec88%89%85%79%71%71%66%50%48%65%84%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 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 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 10, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec346810111098542
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 Weather1°C (34°F)42 mm (1.7 inches)88%moderate
February Weather3°C (37°F)43 mm (1.7 inches)89%moderate
March Weather8°C (47°F)31 mm (1.2 inches)85%high
April Weather12°C (54°F)29 mm (1.2 inches)79%very high
May Weather17°C (63°F)28 mm (1.1 inches)71%very high
June Weather22°C (73°F)16 mm (0.6 inches)71%extreme
July Weather28°C (82°F)1 mm (0.0 inches)66%very high
August Weather26°C (80°F)5 mm (0.2 inches)50%very high
September Weather20°C (68°F)9 mm (0.4 inches)48%very high
October Weather12°C (54°F)18 mm (0.7 inches)65%moderate
November Weather6°C (43°F)28 mm (1.1 inches)84%moderate
December Weather2°C (35°F)33 mm (1.3 inches)87%low

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