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May Weather in Humboldt, United States

Last updated: June 24, 2025

In Humboldt, United States, the average temperature in May is a mild 18°C (65°F). However, be prepared for a temperature range that can dip to a chilly 2°C (36°F) and soar up to a sweltering 38°C (100°F). During this time, you'll encounter approximately 164 mm (6.5 in) of precipitation spread over 14 days, making it one of the wetter months. The atmosphere is quite humid as well, with an average humidity level of 78%.

May Temperature in Humboldt

In May in Humboldt, the average temperature is 18°C (65°F). Maximums can reach 38°C (100°F) and minimums can be as low as 2°C (36°F). Travelers should be prepared for a wide range of temperatures and pack accordingly.

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

The chart illustrates May temperature patterns in Humboldt, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Humboldt, May typically has an average temperature of 18°C (65°F), with highs reaching up to 38°C (100°F) and lows dropping to around 2°C (36°F).
JanFebMarAprMayJunJulAugSepOctNovDec282944526577807671554234
Data source: Temperature data for Humboldt 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 Humboldt

In Humboldt in May, the precipitation amount is 164 mm (6.5 in) spread over 14 days.

May Precipitation Trends in Humboldt

The chart displays monthly precipitation patterns in Humboldt, 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 Humboldt, May typically receives around 164 mm (6.5 inches) of precipitation spread over approximately 14 days.
JanFebMarAprMayJunJulAugSepOctNovDec33319570164109102111791313331
Data source: Precipitation data for May generated using information from the Copernicus Climate Change Service.
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May Humidity in Humboldt

In Humboldt in May, humidity is 78%. With an average temperature of 18°C (65°F), this humidity feels like a warm, enveloping blanket, making travel quite muggy and potentially uncomfortable, as it can leave you feeling sticky and fatigued more quickly than usual.

May Average Humidity in Humboldt

This chart illustrates the average monthly humidity levels in Humboldt, 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 Humboldt is approximately 78%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec76%80%73%75%78%82%83%81%75%75%82%83%
Data source: Humidity data for May generated using information from the Copernicus Climate Change Service.

May UV Index in Humboldt

In Humboldt 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 Humboldt.

Maximum UV Index Levels in Humboldt for May

The chart shows the monthly maximum UV Index (UVI) for Humboldt 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 Humboldt typically reaches 10, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec356910101098643
Data source: Humboldt 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 Humboldt Compares to Other Months

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

This table compares monthly weather conditions in Humboldt, showing how May’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-2°C (28°F)33 mm (1.3 inches)76%moderate
February Weather-2°C (29°F)31 mm (1.2 inches)80%moderate
March Weather7°C (44°F)95 mm (3.7 inches)73%high
April Weather11°C (53°F)70 mm (2.8 inches)74%very high
May Weather18°C (65°F)164 mm (6.5 inches)78%very high
June Weather25°C (77°F)109 mm (4.3 inches)82%very high
July Weather26°C (80°F)102 mm (4.0 inches)83%very high
August Weather24°C (76°F)111 mm (4.4 inches)80%very high
September Weather22°C (71°F)79 mm (3.1 inches)75%very high
October Weather13°C (55°F)131 mm (5.1 inches)75%high
November Weather6°C (43°F)33 mm (1.3 inches)82%moderate
December Weather1°C (35°F)31 mm (1.2 inches)83%moderate

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