Weather forecast for 10 daysChelmsford, MA

Weather forecast for the weekend

Sunday Oct 18, 2026

  • 57°F
  • 34°F
Sunny
Sunny
  • Precip. probability: 2%
  • Precipitation: 0"
  • Wind: 4mphWSW 243°
  • Humidity: 49%
  • UV index: 4
  • Sunrise: 7:02 am EDT
  • Sunset: 5:58 pm EDT
  • ▼
Tomorrow, on Sunday, October 18, conditions will remain bright with clear skies.
The temperature scale will run from a maximum of a refreshing 57.2°F to a minimum of a cold 33.8°F.
The forecasted high for tomorrow will reflect the normal October maximum of 59.9°F.
Sunrise will be at 7:02 am and sunset at 5:58 pm; tomorrow's daylight will last for 10h and 56min.

10-day overview

Daily temperatures

Warmest day: Monday 26.10. 66°C.
Minimum temperature: 55°C.

Chance of precipitation

Highest chance: 24%.

Long-term weather forecast

  • Saturday
  • Oct 17, 2026
  • min.
  • 28°F
Clear
Clear
  • Precip. probability: 2%
  • Precipitation: 0"
  • Wind: 5mphNNW 329°
  • Humidity: 68%
  • UV index: 0
  • Sunrise: 7:01 am EDT
  • Sunset: 6:00 pm EDT
  • ▼
  • Sunday
  • Oct 18, 2026
  • 57°F
  • 34°F
Sunny
Sunny
  • Precip. probability: 2%
  • Precipitation: 0"
  • Wind: 4mphWSW 243°
  • Humidity: 49%
  • UV index: 4
  • Sunrise: 7:02 am EDT
  • Sunset: 5:58 pm EDT
  • ▼
  • Monday
  • Oct 19, 2026
  • 61°F
  • 41°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 10%
  • Precipitation: 0"
  • Wind: 6mphNE 39°
  • Humidity: 64%
  • UV index: 4
  • Sunrise: 7:03 am EDT
  • Sunset: 5:57 pm EDT
  • ▼
  • Tuesday
  • Oct 20, 2026
  • 64°F
  • 39°F
AM Clouds / PM Sun
AM Clouds / PM Sun
  • Precip. probability: 5%
  • Precipitation: 0"
  • Wind: 12mphNNE 22°
  • Humidity: 60%
  • UV index: 3
  • Sunrise: 7:04 am EDT
  • Sunset: 5:55 pm EDT
  • ▼
  • Wednesday
  • Oct 21, 2026
  • 55°F
  • 37°F
Mostly Sunny
Mostly Sunny
  • Precip. probability: 3%
  • Precipitation: 0.04"
  • Wind: 11mphNE 36°
  • Humidity: 64%
  • UV index: 3
  • Sunrise: 7:05 am EDT
  • Sunset: 5:54 pm EDT
  • ▼
  • Thursday
  • Oct 22, 2026
  • 61°F
  • 39°F
Mostly Sunny
Mostly Sunny
  • Precip. probability: 24%
  • Precipitation: 0"
  • Wind: 9mphN 358°
  • Humidity: 61%
  • UV index: 3
  • Sunrise: 7:07 am EDT
  • Sunset: 5:52 pm EDT
  • ▼
  • Friday
  • Oct 23, 2026
  • 57°F
  • 32°F
Sunny
Sunny
  • Precip. probability: 7%
  • Precipitation: 0"
  • Wind: 10mphN 7°
  • Humidity: 51%
  • UV index: 3
  • Sunrise: 7:08 am EDT
  • Sunset: 5:51 pm EDT
  • ▼
  • Saturday
  • Oct 24, 2026
  • 55°F
  • 32°F
Sunny
Sunny
  • Precip. probability: 9%
  • Precipitation: 0"
  • Wind: 7mphNNE 16°
  • Humidity: 57%
  • UV index: 3
  • Sunrise: 7:09 am EDT
  • Sunset: 5:49 pm EDT
  • ▼
  • Sunday
  • Oct 25, 2026
  • 63°F
  • 37°F
Mostly Sunny
Mostly Sunny
  • Precip. probability: 9%
  • Precipitation: 0"
  • Wind: 7mphWNW 299°
  • Humidity: 54%
  • UV index: 3
  • Sunrise: 7:10 am EDT
  • Sunset: 5:48 pm EDT
  • ▼
  • Monday
  • Oct 26, 2026
  • 66°F
  • 43°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 24%
  • Precipitation: 0"
  • Wind: 8mphNW 313°
  • Humidity: 53%
  • UV index: 3
  • Sunrise: 7:12 am EDT
  • Sunset: 5:46 pm EDT
  • ▼
For the next ten days, a combination of mostly clear and cloud-filled weather is predicted.
Rainfall is not forecasted in Chelmsford in the upcoming period.
In the coming days, the highest temperature will vary between 55.4°F and 66.2°F, while the nightly low temperatures will show a considerable swing, as the overnight lows will vary from 28.4°F to 42.8°F.
Expect the warmest day on next Monday, with temperatures peaking at 66.2°F; Wednesday and next Saturday, with the highest temperature of 55.4°F, will be the coldest days.
Updated: Oct 18, 2026 @ 01:52:10 UTC
Published by: Weather U.S. | About Us
Data Sources | weather.com | Weather
Weather Forecasting & Climate

Frequently asked questions

On Sunday, in Chelmsford, clear and sunny conditions are expected.

Tomorrow, the maximum temperature will be 57.2°F, while the minimum temperature will be 33.8°F.
The highest temperature tomorrow will be in line with the average maximum temperature in October. Tomorrow, the lowest temperature will be significantly lower than the average low of 45.7°F.

On Sunday, in Chelmsford, sunrise will be at 7:02 am and sunset at 5:58 pm (EDT).

Tomorrow, the daylight will last for 10h and 56min.