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October Weather in Chula Vista, United States

Last updated: June 24, 2025

In Chula Vista, United States, the average temperature in October hovers around 20°C (68°F). Temperatures can swing from a cool 9°C (48°F) to a scorching 38°C (100°F). Expect a modest precipitation of 14 mm (0.6 in) over about 2 days, contributing to an average humidity level of 58%. Enjoy the diverse climate that October brings!

October Temperature in Chula Vista

In October in Chula Vista, the average temperature is 20°C (68°F). Maximum temperatures can reach 38°C (100°F), while minimums can drop to as low as 9°C (48°F). Be prepared for a range of temperatures and pack appropriately for a comfortable travel experience.

October Weather in Chula Vista: Daily Temperature Highs, Lows, and Averages

The chart illustrates October temperature patterns in Chula Vista, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Chula Vista, October typically has an average temperature of 20°C (68°F), with highs reaching up to 38°C (100°F) and lows dropping to around 9°C (48°F).
JanFebMarAprMayJunJulAugSepOctNovDec565557616367727372686256
Data source: Temperature data for Chula Vista 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.

October Precipitation in Chula Vista

In Chula Vista in October, the precipitation amount is 14 mm (0.6 in) over a period of 2 days.

October Precipitation Trends in Chula Vista

The chart displays monthly precipitation patterns in Chula Vista, with values for each month alongside October’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how October’s conditions compare to those of other months. In Chula Vista, October typically receives around 14 mm (0.6 inches) of precipitation spread over approximately 2 days.
JanFebMarAprMayJunJulAugSepOctNovDec56685124222314142965
Data source: Precipitation data for October generated using information from the Copernicus Climate Change Service.
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October Humidity in Chula Vista

In Chula Vista in October humidity is 58%. With an average temperature of 20°C (68°F), this humidity feels like a refreshing embrace, creating a comfortable atmosphere for exploring the local sights and enjoying leisurely walks outdoors.

October Average Humidity in Chula Vista

This chart illustrates the average monthly humidity levels in Chula Vista, with October’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In October, average humidity in Chula Vista is approximately 58%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec72%77%67%56%46%48%46%42%52%58%66%74%
Data source: Humidity data for October generated using information from the Copernicus Climate Change Service.

October UV Index in Chula Vista

In Chula Vista in October, the maximum UV index is 7, which corresponds to the high Exposure Category. This means that the time to burn is approximately 25 minutes. For more detailed information, you can check the Hourly UV Index in Chula Vista.

Maximum UV Index Levels in Chula Vista for October

The chart shows the monthly maximum UV Index (UVI) for Chula Vista in October, 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 October, the maximum UV index in Chula Vista typically reaches 7, which falls under the high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec468101111111010754
Data source: Chula Vista October 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 October Weather in Chula Vista Compares to Other Months

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

This table compares monthly weather conditions in Chula Vista, showing how October’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather13°C (56°F)56 mm (2.2 inches)72%moderate
February Weather13°C (56°F)68 mm (2.7 inches)77%high
March Weather14°C (57°F)51 mm (2.0 inches)67%very high
April Weather16°C (61°F)24 mm (0.9 inches)56%very high
May Weather17°C (63°F)21 mm (0.8 inches)46%extreme
June Weather19°C (67°F)2 mm (0.1 inches)48%extreme
July Weather22°C (72°F)3 mm (0.1 inches)46%extreme
August Weather23°C (74°F)1 mm (0.1 inches)42%very high
September Weather22°C (72°F)4 mm (0.1 inches)52%very high
October Weather20°C (68°F)14 mm (0.6 inches)58%high
November Weather17°C (62°F)29 mm (1.1 inches)66%moderate
December Weather14°C (57°F)65 mm (2.5 inches)74%moderate

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