Chelmsford Weather in September

September is one of the perfect months to visit Chelmsford, with daytime temperatures of 24°C (75°F) and lows of 11°C (52°F) at night. Do note that quite a bit of rainfall is typical, averaging around 90 mm (3.5 in).

Rainfall in Chelmsford in September

Typically, about 10 days will experience rainfall, with an average of 90 mm (3.5 in) for the month. Rainfall intensity is on the higher side this month. Expect more substantial showers rather than light, passing rain.

Temperature in Chelmsford in September

Chelmsford in September is worth a visit. The temperature is perfect, with 24°C (75°F) during the day and 11°C (52°F) at night. The days can feel warmer than the evenings, so packing for both parts of the day is a good idea. With lows of 11°C (52°F), nights are cool. If you're out after dark, an extra layer will keep you comfortable. The cooler air at night is also great for getting a good rest.

Sunshine in Chelmsford in September

Expect sunny days throughout the month, with an estimated 238 hours of sunshine. This makes it a pleasant time to visit Chelmsford.

If you're inclined towards comfortable temperatures and drier conditions, September is a good time to visit Chelmsford.

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• January
• February
• March
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• October
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For a detailed overview over the year and the best time to visit the United States of America, check out our Chelmsford's climate page.

Chelmsford Temperature in September

Min Temperature 11°C (52°F)  

Max Temperature 24°C (75°F)  

Chance of Rain 33%  

Precipitation 90 mm (3.5 in)  

Rainy days 10 days  

Humidity 69% *  

Sunshine 238 hours *  

Percentage Sunshine 63% *  

* Data from: Boston, the United States of America (37 KM, 23 Miles).

What to Wear in Chelmsford in September

Comfortable temperatures call for an easy wardrobe in September. Pack summer basics like t-shirts and shorts, but include a light jacket for cooler moments. A pair of comfortable walking shoes is essential. Expect heavy rainfall, so bring good rain protection and waterproof bags. Don't forget sun protection, sunglasses, sunscreen, and a hat. These are all good ideas with this much sunshine.

What To Do in Chelmsford in September

We rated the following activities from 1 (least suitable) to 10 (best) to do.

Swimming

9/10

Cycling

9/10

Walking

9/10

Barbeque

8/10

Camping

8/10

Outdoor sports

9/10

Select a Month

Check the conditions for any month of the year.

• January
• February
• March
• April

• May
• June
• July
• August

• September
• October
• November
• December

For a detailed overview over the year and the best time to visit the United States of America, check out our Chelmsford's climate page.

More climate data for Chelmsford

Temperature Rainfall Sunshine Humidity

See the full Chelmsford climate overview or explore weather in the United States of America.