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October Weather in Santa Anna, United States

Last updated: June 24, 2025

In October, the average temperature in Santa Anna, United States hovers around 20°C (68°F). While it's typically mild, be prepared for fluctuations: temperatures can dip to a chilly -1°C (31°F) or soar to a sweltering 39°C (102°F). Rain isn't uncommon, with an average precipitation of 73 mm (2.9 in) spread over about 6 days, coupled with a humidity level of 73%.

October Temperature in Santa Anna

In October in Santa Anna, the average temperature is 20°C (68°F). Maximums can reach 39°C (102°F), and minimums can be as low as -1°C (31°F). Travelers should prepare for a wide range of temperatures and pack appropriately for both warm and cool conditions.

October Weather in Santa Anna: Daily Temperature Highs, Lows, and Averages

The chart illustrates October temperature patterns in Santa Anna, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Santa Anna, October typically has an average temperature of 20°C (68°F), with highs reaching up to 39°C (102°F) and lows dropping to around -1°C (31°F).
JanFebMarAprMayJunJulAugSepOctNovDec474961667582868579685751
Data source: Temperature data for Santa Anna 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 Santa Anna

In Santa Anna in October, the precipitation amount is 73 mm (2.9 in) over a span of 6 days.

October Precipitation Trends in Santa Anna

The chart displays monthly precipitation patterns in Santa Anna, 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 Santa Anna, October typically receives around 73 mm (2.9 inches) of precipitation spread over approximately 6 days.
JanFebMarAprMayJunJulAugSepOctNovDec3238716310746254468733239
Data source: Precipitation data for October generated using information from the Copernicus Climate Change Service.
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October Humidity in Santa Anna

In Santa Anna in October, humidity is 73%. With an average temperature of 20°C (68°F), this humidity feels like a warm embrace, making outdoor activities somewhat sticky, yet the atmosphere remains pleasant for leisurely strolls and sightseeing.

October Average Humidity in Santa Anna

This chart illustrates the average monthly humidity levels in Santa Anna, 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 Santa Anna is approximately 73%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec78%78%77%78%82%78%69%63%66%73%84%87%
Data source: Humidity data for October generated using information from the Copernicus Climate Change Service.

October UV Index in Santa Anna

In Santa Anna in October, the maximum UV index is 8, which corresponds to a very high Exposure Category. This means that the time to burn is only 15 minutes. For more detailed information, you can refer to the Hourly UV Index in Santa Anna.

Maximum UV Index Levels in Santa Anna for October

The chart shows the monthly maximum UV Index (UVI) for Santa Anna 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 Santa Anna typically reaches 8, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec579111111121110864
Data source: Santa Anna 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 Santa Anna Compares to Other Months

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

This table compares monthly weather conditions in Santa Anna, showing how October’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather8°C (47°F)32 mm (1.3 inches)78%moderate
February Weather10°C (50°F)38 mm (1.5 inches)78%high
March Weather16°C (61°F)71 mm (2.8 inches)77%very high
April Weather19°C (67°F)63 mm (2.5 inches)78%extreme
May Weather24°C (75°F)107 mm (4.2 inches)82%extreme
June Weather28°C (82°F)46 mm (1.8 inches)78%extreme
July Weather30°C (86°F)25 mm (1.0 inches)69%extreme
August Weather29°C (85°F)44 mm (1.7 inches)63%extreme
September Weather26°C (79°F)68 mm (2.7 inches)66%very high
October Weather20°C (68°F)73 mm (2.9 inches)73%very high
November Weather14°C (57°F)32 mm (1.2 inches)84%high
December Weather11°C (51°F)39 mm (1.5 inches)87%moderate

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