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May Weather in Stockton, United States

Last updated: June 24, 2025

In Stockton, United States, the average temperature in May is a comfortable 19°C (67°F). However, be prepared for a range—temperatures can dip as low as 4°C (40°F) and soar to a sizzling 34°C (93°F). Expect about 180 mm (7.1 in) of precipitation over 14 days, adding to the region's average humidity of 83%. Whether you're looking for cool breezes or sunny days, May in Stockton has something to offer!

May Temperature in Stockton

In May in Stockton, the average temperature is 19°C (67°F). Maximum temperatures can reach 34°C (93°F), while minimums can drop to as low as 4°C (40°F). Travelers should prepare for a wide range of temperatures and pack accordingly.

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

The chart illustrates May temperature patterns in Stockton, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Stockton, 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 4°C (40°F).
JanFebMarAprMayJunJulAugSepOctNovDec353749566777807773594641
Data source: Temperature data for Stockton 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 Stockton

In Stockton in May, the total precipitation amount is 180 mm (7.1 in) spread over 14 days.

May Precipitation Trends in Stockton

The chart displays monthly precipitation patterns in Stockton, 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 Stockton, May typically receives around 180 mm (7.1 inches) of precipitation spread over approximately 14 days.
JanFebMarAprMayJunJulAugSepOctNovDec696513312818086108144751195742
Data source: Precipitation data for May generated using information from the Copernicus Climate Change Service.
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May Humidity in Stockton

In Stockton in May humidity is 83%. With an average temperature of 19°C (67°F), this humidity feels like a warm, tropical blanket wrapping around you, making traveling feel a bit sluggish and sticky, yet still inviting as long as you stay hydrated and take breaks in the shade.

May Average Humidity in Stockton

This chart illustrates the average monthly humidity levels in Stockton, 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 Stockton is approximately 83%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec81%78%76%78%83%83%78%68%64%70%83%87%
Data source: Humidity data for May generated using information from the Copernicus Climate Change Service.

May UV Index in Stockton

In Stockton 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 Stockton.

Maximum UV Index Levels in Stockton for May

The chart shows the monthly maximum UV Index (UVI) for Stockton 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 Stockton typically reaches 10, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec36710101111109753
Data source: Stockton 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 Stockton Compares to Other Months

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

This table compares monthly weather conditions in Stockton, showing how May’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather1°C (35°F)69 mm (2.7 inches)81%moderate
February Weather3°C (37°F)65 mm (2.5 inches)78%high
March Weather9°C (49°F)133 mm (5.2 inches)76%high
April Weather13°C (56°F)128 mm (5.0 inches)78%very high
May Weather19°C (67°F)180 mm (7.1 inches)83%very high
June Weather25°C (77°F)86 mm (3.4 inches)83%extreme
July Weather27°C (80°F)108 mm (4.2 inches)78%extreme
August Weather25°C (77°F)144 mm (5.7 inches)68%very high
September Weather23°C (73°F)75 mm (3.0 inches)64%very high
October Weather15°C (59°F)119 mm (4.7 inches)70%high
November Weather8°C (47°F)57 mm (2.2 inches)83%moderate
December Weather5°C (41°F)42 mm (1.6 inches)87%moderate

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