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The weather in September in West Acton

It's warm in September in West Acton with an average temperature of 24°C. Temperatures this month range from a low of 18°C to a high of 28°C. At night, you can expect temperatures between 10°C and 17°C.

Looking for sun? September isn’t a good month to be in West Acton. The temperature is nice, but there’s too much chance of rain.

Average temperatures and precipitation

This chart shows the average daily maximum and minimum temperatures (in degrees Celsius) and precipitation (in millimeters) in September for West Acton, Massachusetts. A low precipitation value usually indicates little to no rainfall on that day in recent years, while a higher value suggests more frequent rainfall.

Temperature records

With 35°C in 2015, West Acton reached the highest temperature in September over the past 10 years. The lowest daytime temperature in this month was 12°C in 2017. The extreme nighttime temperatures ranged from a lowest recorded value of 0°C to a highest value of 22°C.

Rainfall amount

In September, there is an average of 161 mm of precipitation, spread over 16 days. The wind speed is around 3 Bft, mostly coming from the South.

Daily weather in September for West Acton

Click on any day in September to get detailed info about the usual weather on that day in West Acton. Check out the historical temperatures and precipitation over the past 10 years on this day.

September weather comparison

  West Acton New York
Average temperature 24°C 27°C
Max. temperature 28°C 31°C
Min. temperature 10°C -5°C
Total precipitation 161 mm 57 mm
Rainy days 16 days 9 days

Start of September

The month of September starts in West Acton with hot temps, averaging around 27°C during the day and nights around 16°C.

Mid September

By mid-September, daytime temps drop to around 24°C, with nights around 13°C. During this part of the month, you might see regular precipitation, but there will also be some sunny days.

End of September

By the end of September, the average daytime temperature in West Acton is around 23°C, while nighttime temps are about 12°C. A shower might pop up, but overall, the weather will be dry and sunny.

UV index

The UV index is a maximum of 6 this month. That's a moderate to high value on the intensity scale of 1 to 11. Unprotected skin can burn within 15-25 minutes.

Check out the climate of West Acton for all months and discover the best travel time

Temperature charts

These charts show the average temperatures in September in West Acton, Massachusetts. The temperatures are shown in degrees Celsius and are calculated based on data from the past 10 years.

Daily Temperature in September in West Acton

Temperature in September in West Acton over the years

Precipitation charts

These charts show the average amount of precipitation in September in West Acton, Massachusetts. Precipitation is always measured as water, even when it falls as snow or hail The amount of precipitation is displayed in millimeters, while snowfall is shown in centimeters.

Daily Precipitation in September in West Acton

Total precipitation in September in West Acton over the years

Daily UV index in September in West Acton

This chart shows the average daily UV index in September in West Acton, with the UV index ranging from 0 to a maximum of 11. The bottom of the chart shows the days of the month. Based on historical data, this chart provides an idea of the daily UV radiation levels you can expect.

Weather experiences in September in West Acton

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Average weather in West Acton by month

Click on a month below to see detailed weather info for West Acton. Based on historical weather data, you can see the average temperature, precipitation, wind, and UV index for each day of the month.