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May Weather in Valley Center, United States

Last updated: June 24, 2025

In May, the average temperature in Valley Center, United States hovers around 19°C (66°F). Expect minimums as cool as 4°C (39°F) and highs reaching up to 35°C (96°F). Precipitation can be significant, totaling 176 mm (6.9 in) over about 14 days, while the average humidity sits at a comfortable 83%.

May Temperature in Valley Center

In May in Valley Center, the average temperature is 19°C (66°F). Maximums can reach 35°C (96°F), while minimums can drop as low as 4°C (39°F). Be prepared for varying temperatures, making it a great time to experience diverse weather conditions while traveling.

May Weather in Valley Center: Daily Temperature Highs, Lows, and Averages

The chart illustrates May temperature patterns in Valley Center, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Valley Center, May typically has an average temperature of 19°C (66°F), with highs reaching up to 35°C (96°F) and lows dropping to around 4°C (39°F).
JanFebMarAprMayJunJulAugSepOctNovDec343548556678807873584639
Data source: Temperature data for Valley Center 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 Valley Center

In Valley Center in May, the precipitation amount is 176 mm (6.9 in) over a period of 14 days.

May Precipitation Trends in Valley Center

The chart displays monthly precipitation patterns in Valley Center, 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 Valley Center, May typically receives around 176 mm (6.9 inches) of precipitation spread over approximately 14 days.
JanFebMarAprMayJunJulAugSepOctNovDec3833858217610576101831142732
Data source: Precipitation data for May generated using information from the Copernicus Climate Change Service.
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May Humidity in Valley Center

In Valley Center in May, humidity is 83%. With an average temperature of 19°C (66°F), this humidity feels like a heavy blanket wrapping around you, making travel feel more sluggish and muggy, yet there's a refreshing coolness in the air that invites you to explore.

May Average Humidity in Valley Center

This chart illustrates the average monthly humidity levels in Valley Center, 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 Valley Center is approximately 83%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec77%76%71%74%83%83%81%73%67%72%82%85%
Data source: Humidity data for May generated using information from the Copernicus Climate Change Service.

May UV Index in Valley Center

In Valley Center 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 Valley Center.

Maximum UV Index Levels in Valley Center for May

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

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

This table compares monthly weather conditions in Valley Center, showing how May’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather1°C (34°F)38 mm (1.5 inches)77%moderate
February Weather1°C (35°F)33 mm (1.3 inches)76%high
March Weather9°C (49°F)85 mm (3.4 inches)71%high
April Weather13°C (56°F)82 mm (3.2 inches)73%very high
May Weather19°C (66°F)176 mm (6.9 inches)83%very high
June Weather25°C (78°F)105 mm (4.1 inches)83%extreme
July Weather27°C (81°F)76 mm (3.0 inches)81%extreme
August Weather25°C (78°F)100 mm (4.0 inches)73%very high
September Weather23°C (73°F)83 mm (3.3 inches)67%very high
October Weather14°C (58°F)114 mm (4.5 inches)72%high
November Weather8°C (46°F)26 mm (1.0 inches)82%moderate
December Weather4°C (39°F)32 mm (1.2 inches)85%moderate

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