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May Weather in Pleasanton, United States

Last updated: June 24, 2025

In Pleasanton, United States during May, the average temperature hovers around 19°C (67°F), presenting a pleasant climate. Expect it to range from a minimum of 3°C (37°F) to a sunny maximum of 34°C (93°F). However, be prepared for rain, as the precipitation amounts to 186 mm (7.3 in) over approximately 15 days. With an average humidity level of 82%, the air is often moist, contributing to the area's lush greenery.

May Temperature in Pleasanton

In May in Pleasanton, the average temperature is 19°C (67°F). The maximum can reach 34°C (93°F), while the minimum can drop as low as 3°C (37°F). This makes it an ideal time for travelers to enjoy a variety of outdoor activities, from warm afternoons to cool evenings.

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

The chart illustrates May temperature patterns in Pleasanton, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Pleasanton, May typically has an average temperature of 19°C (67°F), with highs reaching up to 34°C (93°F) and lows dropping to around 3°C (37°F).
JanFebMarAprMayJunJulAugSepOctNovDec333548556777807773584639
Data source: Temperature data for Pleasanton 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 Pleasanton

In Pleasanton in May, the total precipitation amount is 186 mm (7.3 in), occurring over a period of 15 days.

May Precipitation Trends in Pleasanton

The chart displays monthly precipitation patterns in Pleasanton, 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 Pleasanton, May typically receives around 186 mm (7.3 inches) of precipitation spread over approximately 15 days.
JanFebMarAprMayJunJulAugSepOctNovDec634910711118793129121771064733
Data source: Precipitation data for May generated using information from the Copernicus Climate Change Service.
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May Humidity in Pleasanton

In Pleasanton in May humidity is 82%. With an average temperature of 19°C (67°F), this humidity feels like a heavy blanket wrapping around you, making each step feel sluggish and the air thick as you explore the sights.

May Average Humidity in Pleasanton

This chart illustrates the average monthly humidity levels in Pleasanton, 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 Pleasanton is approximately 82%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec80%78%75%77%82%83%81%78%72%72%84%86%
Data source: Humidity data for May generated using information from the Copernicus Climate Change Service.

May UV Index in Pleasanton

In Pleasanton 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 Pleasanton.

Maximum UV Index Levels in Pleasanton for May

The chart shows the monthly maximum UV Index (UVI) for Pleasanton 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 Pleasanton typically reaches 10, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec3579101111109743
Data source: Pleasanton 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 Pleasanton Compares to Other Months

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

This table compares monthly weather conditions in Pleasanton, showing how May’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather1°C (34°F)63 mm (2.5 inches)80%moderate
February Weather2°C (35°F)49 mm (1.9 inches)78%moderate
March Weather9°C (48°F)107 mm (4.2 inches)75%high
April Weather13°C (56°F)111 mm (4.4 inches)77%very high
May Weather19°C (67°F)186 mm (7.3 inches)82%very high
June Weather25°C (78°F)93 mm (3.6 inches)83%extreme
July Weather27°C (81°F)129 mm (5.1 inches)81%extreme
August Weather25°C (77°F)120 mm (4.7 inches)78%very high
September Weather23°C (73°F)77 mm (3.0 inches)72%very high
October Weather15°C (58°F)106 mm (4.2 inches)72%high
November Weather8°C (46°F)47 mm (1.9 inches)84%moderate
December Weather4°C (40°F)33 mm (1.3 inches)86%moderate

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