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September Weather in Plainville, United States

Last updated: June 24, 2025

In September, the average temperature in Plainville, United States hovers around 22°C (72°F), making it a delightful time to visit. Expect a minimum temperature of 4°C (39°F) and a maximum reaching up to 37°C (99°F). With an average precipitation of 54 mm (2.1 in) spread over 4 days, and an average humidity of 73%, you'll want to pack accordingly!

September Temperature in Plainville

In September in Plainville, the average temperature is 22°C (72°F). Maximum temperatures can reach 37°C (99°F) and minimums can drop as low as 4°C (39°F). Be sure to pack a variety of clothing to accommodate both warm days and cooler nights while exploring this diverse destination.

September Weather in Plainville: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Plainville, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Plainville, September typically has an average temperature of 22°C (72°F), with highs reaching up to 37°C (99°F) and lows dropping to around 4°C (39°F).
JanFebMarAprMayJunJulAugSepOctNovDec303144536377807772554435
Data source: Temperature data for Plainville 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.

September Precipitation in Plainville

In Plainville in September, the total precipitation amount is 54 mm (2.1 in) over the course of 4 days.

September Precipitation Trends in Plainville

The chart displays monthly precipitation patterns in Plainville, with values for each month alongside September’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how September’s conditions compare to those of other months. In Plainville, September typically receives around 54 mm (2.1 inches) of precipitation spread over approximately 4 days.
JanFebMarAprMayJunJulAugSepOctNovDec2420664015163798554612131
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Plainville

In Plainville in September, humidity is 73%. With an average temperature of 22°C (72°F), this humidity feels like a warm embrace that can make outdoor activities feel sticky and heavy, so it's best to stay hydrated and take frequent breaks while exploring.

September Average Humidity in Plainville

This chart illustrates the average monthly humidity levels in Plainville, with September’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In September, average humidity in Plainville is approximately 73%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec75%78%67%70%82%81%80%80%74%71%79%83%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Plainville

In Plainville in September, 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 Plainville.

Maximum UV Index Levels in Plainville for September

The chart shows the monthly maximum UV Index (UVI) for Plainville in September, 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 September, the maximum UV index in Plainville typically reaches 9, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec3579101111109643
Data source: Plainville September 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 September Weather in Plainville Compares to Other Months

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

This table compares monthly weather conditions in Plainville, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-1°C (30°F)24 mm (0.9 inches)74%moderate
February Weather-1°C (31°F)20 mm (0.8 inches)78%moderate
March Weather7°C (44°F)66 mm (2.6 inches)67%high
April Weather12°C (53°F)40 mm (1.6 inches)70%very high
May Weather17°C (64°F)151 mm (5.9 inches)82%very high
June Weather25°C (77°F)63 mm (2.5 inches)81%extreme
July Weather27°C (81°F)79 mm (3.1 inches)80%extreme
August Weather25°C (77°F)85 mm (3.3 inches)80%very high
September Weather22°C (72°F)54 mm (2.1 inches)73%very high
October Weather13°C (55°F)61 mm (2.4 inches)71%high
November Weather6°C (44°F)21 mm (0.8 inches)79%moderate
December Weather2°C (36°F)31 mm (1.2 inches)83%moderate

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