ClimateForecastSeptemberOctober >>

Chelmsford weather in September (Massachusetts, United States of America)

Looking to travel to Chelmsford in September? Wondering if it's the right time to visit? Browse this page for a comprehensive overview of the weather conditions for that month.

In Chelmsford, September is characterized by high temperatures and moderate rainfall. Throughout the daytime, temperatures often hover around 24°C. However, as the sun sets and evening approaches, there's a noticeable cool-down, with temperatures gently dropping to a more temperate 11°C.

Chelmsford in September usually receives moderate rainfall, averaging around 90 mm for the month. Based on our climate data of the past 30 years, about 10 days of rain are anticipated.

With around 238 hours of sunshine, the days are mostly sunny. It gives a pleasant and vibrant feel to the area.

If you're inclined towards comfortable temperatures and drier conditions, September is a prime time to visit Chelmsford. September typically offers the best circumstances. While January, February, March and December tend to showcase less optimal conditions.

For an in-depth look at the yearly conditions, visit our specialized Chelmsford climate page with graphs.

 

Chelmsford, monthly averages in September

Min TemperatureMin Temperature 11°C  
Max TemperatureMax Temperature 24°C  
Chance of RainChance of Rain 33%  
PrecipitationPrecipitation 90 mm  
Rainy daysRainy days 10 days  
HumidityHumidity 69% *  
SunshineSunshine 238 hours *  
Percentage SunshinePercentage Sunshine 63% *  
* Data from: Boston, the United States of America (37 KM, 23 Miles).

Where to go in the United States of America in September

Find out more about the weather in the United States of America in September and which places have the best weather conditions in this month.

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Legend perfect weather pleasant tolerable unpleasant poor
Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C and 29°C and not too much precipitation (less than 90 mm a month).

So, what should you wear in Chelmsford in September?

For visitors traveling to Chelmsford, we recommend wearing layers. So maybe a skirt, t-shirt, shorts for during the day and jeans and a warm jacket for some days and evenings. Bring a rain jacket in case it rains during your stay. Plan on layering your clothes.

What To Do

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

Swimming
9/10
Cycling
9/10
Walking
9/10
Barbeque
8/10
Camping
8/10
Outdoor sports
9/10

Interested in more climate information?

Weather and Climate provides you with all the information you need about the climate in Chelmsford.

Our site offers climate and forecast data for every country in the world. Are you going to the United States of America? On this website you can find historical weather averages for many cities in the United States of America. Not sure yet where to go? We now have a tool which recommends destinations that suit your ideal climate conditions. Find out where to go with our weather planner.