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May Weather in Forestville, United States

Last updated: June 24, 2025

In Forestville, United States, the average temperature in May hovers around 19°C (66°F), offering a comfortable climate. However, temperatures can dip to a chilling 0°C (33°F) or soar to a warm 32°C (90°F). During this month, expect about 136 mm (5.4 in) of precipitation spread over approximately 14 days, contributing to the region's average humidity of 81%, creating a lush, vibrant atmosphere.

May Temperature in Forestville

In May, in Forestville, the average temperature is 19°C (66°F). The maximum can reach 32°C (90°F), and the minimum can be as low as 0°C (33°F). Therefore, it's advisable to pack layers and be prepared for a range of weather conditions while traveling.

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

The chart illustrates May temperature patterns in Forestville, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Forestville, May typically has an average temperature of 19°C (66°F), with highs reaching up to 32°C (90°F) and lows dropping to around 0°C (33°F).
JanFebMarAprMayJunJulAugSepOctNovDec343745546673777570594439
Data source: Temperature data for Forestville 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 Forestville

In Forestville in May, the precipitation amount is 136 mm (5.4 in) over a span of 14 days.

May Precipitation Trends in Forestville

The chart displays monthly precipitation patterns in Forestville, 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 Forestville, May typically receives around 136 mm (5.4 inches) of precipitation spread over approximately 14 days.
JanFebMarAprMayJunJulAugSepOctNovDec8311613913413614911789959998119
Data source: Precipitation data for May generated using information from the Copernicus Climate Change Service.
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May Humidity in Forestville

In Forestville in May, humidity is 81%. With an average temperature of 19°C (66°F), this humidity feels like a warm, heavy blanket enveloping you, making travel feel both muggy and slightly stifling, often leading to a need for frequent breaks in the shade.

May Average Humidity in Forestville

This chart illustrates the average monthly humidity levels in Forestville, 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 Forestville is approximately 81%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec88%88%87%85%81%82%81%73%73%78%89%87%
Data source: Humidity data for May generated using information from the Copernicus Climate Change Service.

May UV Index in Forestville

In Forestville 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 Forestville.

Maximum UV Index Levels in Forestville for May

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

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

This table compares monthly weather conditions in Forestville, showing how May’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather1°C (34°F)83 mm (3.3 inches)88%moderate
February Weather3°C (38°F)116 mm (4.6 inches)88%moderate
March Weather7°C (46°F)139 mm (5.5 inches)87%high
April Weather12°C (55°F)134 mm (5.3 inches)85%very high
May Weather19°C (66°F)136 mm (5.4 inches)81%very high
June Weather23°C (73°F)149 mm (5.9 inches)82%very high
July Weather25°C (77°F)117 mm (4.6 inches)81%very high
August Weather24°C (75°F)89 mm (3.5 inches)73%very high
September Weather21°C (70°F)95 mm (3.7 inches)73%very high
October Weather15°C (59°F)99 mm (3.9 inches)78%high
November Weather7°C (44°F)98 mm (3.9 inches)89%moderate
December Weather4°C (39°F)119 mm (4.7 inches)87%moderate

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