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October Weather in San Marino, United States

Last updated: June 24, 2025

In October, the average temperature in San Marino, United States hovers around 20°C (69°F). Temperatures can swing from a chilly 9°C (48°F) to a scorching 39°C (103°F). With an average humidity of 67%, the climate is quite pleasant, although you might encounter a bit of moisture, as precipitation totals 10 mm (0.4 in) over 1 day.

October Temperature in San Marino

In October in San Marino, the average temperature is 20°C (69°F). Maximum temperatures can reach 39°C (103°F), while minimum temperatures can drop as low as 9°C (48°F). Be prepared for a wide range of temperatures and pack accordingly for your travels.

October Weather in San Marino: Daily Temperature Highs, Lows, and Averages

The chart illustrates October temperature patterns in San Marino, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In San Marino, October typically has an average temperature of 20°C (69°F), with highs reaching up to 39°C (103°F) and lows dropping to around 9°C (48°F).
JanFebMarAprMayJunJulAugSepOctNovDec555658636570757674696255
Data source: Temperature data for San Marino 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 San Marino

In San Marino in October, the precipitation amount is 10 mm (0.4 in) over the course of 1 day.

October Precipitation Trends in San Marino

The chart displays monthly precipitation patterns in San Marino, 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 San Marino, October typically receives around 10 mm (0.4 inches) of precipitation spread over approximately 1 days.
JanFebMarAprMayJunJulAugSepOctNovDec75636723163224102072
Data source: Precipitation data for October generated using information from the Copernicus Climate Change Service.
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October Humidity in San Marino

In San Marino in October, humidity is 67%. With an average temperature of 20°C (69°F), this humidity feels like a warm, gentle embrace that clings to your skin, creating a comfortable yet slightly sticky atmosphere that can be refreshing while exploring the sights, provided you stay hydrated and take breaks in the shade.

October Average Humidity in San Marino

This chart illustrates the average monthly humidity levels in San Marino, 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 San Marino is approximately 67%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec74%79%75%71%70%72%73%69%68%67%68%71%
Data source: Humidity data for October generated using information from the Copernicus Climate Change Service.

October UV Index in San Marino

In San Marino 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 San Marino.

Maximum UV Index Levels in San Marino for October

The chart shows the monthly maximum UV Index (UVI) for San Marino 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 San Marino typically reaches 7, which falls under the high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec468101011111010754
Data source: San Marino 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 San Marino Compares to Other Months

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

This table compares monthly weather conditions in San Marino, showing how October’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather13°C (56°F)75 mm (3.0 inches)74%moderate
February Weather13°C (56°F)63 mm (2.5 inches)79%high
March Weather14°C (58°F)67 mm (2.7 inches)75%very high
April Weather17°C (63°F)23 mm (0.9 inches)70%very high
May Weather18°C (65°F)16 mm (0.6 inches)70%very high
June Weather21°C (70°F)3 mm (0.1 inches)72%extreme
July Weather24°C (76°F)2 mm (0.1 inches)73%extreme
August Weather25°C (76°F)2 mm (0.1 inches)69%very high
September Weather23°C (74°F)4 mm (0.1 inches)68%very high
October Weather20°C (69°F)10 mm (0.4 inches)67%high
November Weather17°C (62°F)20 mm (0.8 inches)68%moderate
December Weather13°C (56°F)72 mm (2.8 inches)71%moderate

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