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August Weather in Southborough, United States

Last updated: June 24, 2025

In August, the average temperature in Southborough, United States is a pleasant 23°C (74°F). However, be prepared for temperature variations—minimums can dip to 9°C (49°F), while highs may reach up to 35°C (96°F). During this month, expect about 89 mm (3.5 in) of precipitation spread over 11 days, contributing to an average humidity of 66%.

August Temperature in Southborough

In August in Southborough, the average temperature is 23°C (74°F). Maximums can reach 35°C (96°F) and minimums can be as low as 9°C (49°F). It’s a great time to explore Southborough, so pack accordingly to enjoy a range of outdoor activities!

August Weather in Southborough: Daily Temperature Highs, Lows, and Averages

The chart illustrates August temperature patterns in Southborough, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Southborough, August typically has an average temperature of 23°C (74°F), with highs reaching up to 35°C (96°F) and lows dropping to around 9°C (49°F).
JanFebMarAprMayJunJulAugSepOctNovDec303338485969747366564234
Data source: Temperature data for Southborough 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.

August Precipitation in Southborough

In Southborough in August, the precipitation amount is 89 mm (3.5 in) over a span of 11 days.

August Precipitation Trends in Southborough

The chart displays monthly precipitation patterns in Southborough, with values for each month alongside August’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how August’s conditions compare to those of other months. In Southborough, August typically receives around 89 mm (3.5 inches) of precipitation spread over approximately 11 days.
JanFebMarAprMayJunJulAugSepOctNovDec6785921249287131898313996118
Data source: Precipitation data for August generated using information from the Copernicus Climate Change Service.
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August Humidity in Southborough

In Southborough in August humidity is 66%. With an average temperature of 23°C (74°F), this humidity feels like a warm embrace, making outdoor activities slightly uncomfortable but still enjoyable for travelers who are properly hydrated and prepared for the moist conditions.

August Average Humidity in Southborough

This chart illustrates the average monthly humidity levels in Southborough, with August’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In August, average humidity in Southborough is approximately 66%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec86%84%82%80%72%72%67%66%71%79%84%81%
Data source: Humidity data for August generated using information from the Copernicus Climate Change Service.

August UV Index in Southborough

In Southborough in August, the maximum UV index is 9, which corresponds to a very high Exposure Category. The time to burn is just 15 minutes, so it's essential to take precautions. For detailed information, you can check the Hourly UV Index in Southborough.

Maximum UV Index Levels in Southborough for August

The chart shows the monthly maximum UV Index (UVI) for Southborough in August, 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 August, the maximum UV index in Southborough typically reaches 9, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec3568910997642
Data source: Southborough August 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 August Weather in Southborough Compares to Other Months

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

This table compares monthly weather conditions in Southborough, showing how August’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-1°C (31°F)67 mm (2.6 inches)86%moderate
February Weather0°C (33°F)85 mm (3.3 inches)84%moderate
March Weather3°C (38°F)91 mm (3.6 inches)82%high
April Weather9°C (49°F)124 mm (4.9 inches)80%very high
May Weather15°C (59°F)92 mm (3.6 inches)72%very high
June Weather20°C (69°F)87 mm (3.4 inches)72%very high
July Weather23°C (74°F)131 mm (5.1 inches)67%very high
August Weather23°C (74°F)89 mm (3.5 inches)66%very high
September Weather19°C (66°F)83 mm (3.3 inches)71%high
October Weather13°C (56°F)139 mm (5.5 inches)78%high
November Weather6°C (43°F)96 mm (3.8 inches)84%moderate
December Weather1°C (34°F)118 mm (4.6 inches)81%low

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