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May Weather in Lemon Grove, United States

Last updated: June 24, 2025

In May, the average temperature in Lemon Grove, United States is a warm 26°C (79°F). Expect a minimum of 12°C (54°F) and a maximum of 37°C (99°F), making it a month of significant variation. Be prepared for some rain, as the region typically receives 133 mm (5.3 in) of precipitation over approximately 12 days. With an average humidity of 65%, the air can feel quite warm and sticky, so plan your activities accordingly!

May Temperature in Lemon Grove

In May in Lemon Grove, the average temperature is 26°C (79°F). Maximums can reach 37°C (99°F), and minimums can be as low as 12°C (54°F). This makes Lemon Grove an ideal destination for travelers seeking warm weather while still having the option for cooler evenings.

May Weather in Lemon Grove: Daily Temperature Highs, Lows, and Averages

The chart illustrates May temperature patterns in Lemon Grove, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Lemon Grove, May typically has an average temperature of 26°C (79°F), with highs reaching up to 37°C (99°F) and lows dropping to around 12°C (54°F).
JanFebMarAprMayJunJulAugSepOctNovDec636970757981818281797066
Data source: Temperature data for Lemon Grove 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 Lemon Grove

In Lemon Grove in May, the total precipitation amount is 133 mm (5.3 in) over the course of 12 days.

May Precipitation Trends in Lemon Grove

The chart displays monthly precipitation patterns in Lemon Grove, 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 Lemon Grove, May typically receives around 133 mm (5.3 inches) of precipitation spread over approximately 12 days.
JanFebMarAprMayJunJulAugSepOctNovDec34461967134248282274194734654
Data source: Precipitation data for May generated using information from the Copernicus Climate Change Service.
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May Humidity in Lemon Grove

In Lemon Grove in May, humidity is 65%. With an average temperature of 26°C (79°F), this humidity feels like a warm, enveloping blanket, making travel quite sticky and uncomfortable.

May Average Humidity in Lemon Grove

This chart illustrates the average monthly humidity levels in Lemon Grove, 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 Lemon Grove is approximately 65%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec83%80%75%68%65%73%77%80%83%83%83%84%
Data source: Humidity data for May generated using information from the Copernicus Climate Change Service.

May UV Index in Lemon Grove

In Lemon Grove in May, the maximum UV index is 12, which corresponds to an extreme Exposure Category. The time to burn is just 10 minutes, underscoring the importance of sun protection. For detailed information, you can check the Hourly UV Index in Lemon Grove.

Maximum UV Index Levels in Lemon Grove for May

The chart shows the monthly maximum UV Index (UVI) for Lemon Grove 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 Lemon Grove typically reaches 12, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec6810111212121211975
Data source: Lemon Grove 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 Lemon Grove Compares to Other Months

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

This table compares monthly weather conditions in Lemon Grove, showing how May’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather17°C (63°F)34 mm (1.3 inches)83%high
February Weather21°C (69°F)46 mm (1.8 inches)80%very high
March Weather21°C (71°F)19 mm (0.7 inches)75%very high
April Weather24°C (75°F)67 mm (2.6 inches)68%extreme
May Weather26°C (79°F)133 mm (5.3 inches)65%extreme
June Weather27°C (81°F)248 mm (9.8 inches)73%extreme
July Weather27°C (82°F)282 mm (11.1 inches)77%extreme
August Weather28°C (82°F)273 mm (10.8 inches)80%extreme
September Weather27°C (81°F)194 mm (7.6 inches)83%extreme
October Weather26°C (79°F)72 mm (2.9 inches)83%very high
November Weather21°C (71°F)46 mm (1.8 inches)83%high
December Weather19°C (66°F)54 mm (2.1 inches)84%moderate

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