Weather forecast for 10 daysWatertown, MA

Weather forecast for the weekend

Sunday Oct 18, 2026

  • 55°F
  • 37°F
Sunny
Sunny
  • Precip. probability: 2%
  • Precipitation: 0"
  • Wind: 4mphN 0°
  • Humidity: 56%
  • UV index: 4
  • Sunrise: 7:01 am EDT
  • Sunset: 5:58 pm EDT
  • ▼
Today, on Sunday, October 18, sunshine will likely continue with scattered clouds at most.
Temperature is predicted to swing from a high of a mild 55.4°F to a low of a wintry 37.4°F.
The maximum temperature for today will be a couple of degrees lower than the regular high of 61°F in October.
Sunrise will be at 7:01 am and sunset at 5:58 pm; the daylight will last for 10h and 57min.

10-day overview

Daily temperatures

Warmest day: Monday 26.10. 66°C.
Coldest day: Wednesday 54°C.

Chance of precipitation

Highest chance: Thursday 22%.

Long-term weather forecast

  • Sunday
  • Oct 18, 2026
  • 55°F
  • 37°F
Sunny
Sunny
  • Precip. probability: 2%
  • Precipitation: 0"
  • Wind: 4mphN 0°
  • Humidity: 56%
  • UV index: 4
  • Sunrise: 7:01 am EDT
  • Sunset: 5:58 pm EDT
  • ▼
  • Monday
  • Oct 19, 2026
  • 59°F
  • 43°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 7%
  • Precipitation: 0"
  • Wind: 9mphNE 42°
  • Humidity: 65%
  • UV index: 4
  • Sunrise: 7:02 am EDT
  • Sunset: 5:56 pm EDT
  • ▼
  • Tuesday
  • Oct 20, 2026
  • 63°F
  • 43°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 6%
  • Precipitation: 0"
  • Wind: 15mphNNE 24°
  • Humidity: 62%
  • UV index: 3
  • Sunrise: 7:03 am EDT
  • Sunset: 5:55 pm EDT
  • ▼
  • Wednesday
  • Oct 21, 2026
  • 54°F
  • 41°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 4%
  • Precipitation: 0"
  • Wind: 14mphNE 34°
  • Humidity: 67%
  • UV index: 3
  • Sunrise: 7:04 am EDT
  • Sunset: 5:53 pm EDT
  • ▼
  • Thursday
  • Oct 22, 2026
  • 61°F
  • 41°F
Mostly Sunny
Mostly Sunny
  • Precip. probability: 22%
  • Precipitation: 0"
  • Wind: 10mphN 3°
  • Humidity: 59%
  • UV index: 3
  • Sunrise: 7:06 am EDT
  • Sunset: 5:52 pm EDT
  • ▼
  • Friday
  • Oct 23, 2026
  • 55°F
  • 36°F
Sunny
Sunny
  • Precip. probability: 5%
  • Precipitation: 0"
  • Wind: 12mphN 11°
  • Humidity: 51%
  • UV index: 3
  • Sunrise: 7:07 am EDT
  • Sunset: 5:50 pm EDT
  • ▼
  • Saturday
  • Oct 24, 2026
  • 55°F
  • 34°F
Mostly Sunny
Mostly Sunny
  • Precip. probability: 10%
  • Precipitation: 0"
  • Wind: 9mphNNE 25°
  • Humidity: 53%
  • UV index: 3
  • Sunrise: 7:08 am EDT
  • Sunset: 5:49 pm EDT
  • ▼
  • Sunday
  • Oct 25, 2026
  • 61°F
  • 37°F
Mostly Sunny
Mostly Sunny
  • Precip. probability: 13%
  • Precipitation: 0"
  • Wind: 7mphWNW 288°
  • Humidity: 55%
  • UV index: 3
  • Sunrise: 7:09 am EDT
  • Sunset: 5:47 pm EDT
  • ▼
  • Monday
  • Oct 26, 2026
  • 66°F
  • 45°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 18%
  • Precipitation: 0"
  • Wind: 9mphNW 310°
  • Humidity: 54%
  • UV index: 3
  • Sunrise: 7:10 am EDT
  • Sunset: 5:46 pm EDT
  • ▼
  • Tuesday
  • Oct 27, 2026
  • 63°F
  • 41°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 14%
  • Precipitation: 0"
  • Wind: 11mphNNW 339°
  • Humidity: 62%
  • UV index: 3
  • Sunrise: 7:12 am EDT
  • Sunset: 5:44 pm EDT
  • ▼
Weather patterns suggest that a combination of bright and cloud-filled weather is anticipated.
Rainfall is not forecasted in Watertown in the upcoming days.
There will be a considerable variation in temperature in the upcoming period. Highs will range from 53.6°F to 66.2°F, while the forecast minimum temperature falls between 33.8°F and 44.6°F.
Expect the warmest day on next Monday, with temperatures peaking at 66.2°F; expect the coldest day on Wednesday with a high of 53.6°F.
Updated: Oct 18, 2026 @ 07:21:19 UTC
Published by: Weather U.S. | About Us
Data Sources | weather.com | Weather
Weather Forecasting & Climate

Frequently asked questions

Today, sunshine and minimal clouds are in the outlook.

Today, the highest temperature will be 55.4°F, while the lowest temperature will be 37.4°F.
The highest temperature will be moderately lower than the average maximum of 61°F in October. Today, the lowest temperature will be notably lower than the average low of 47.3°F.

On Sunday, in Watertown, sunrise will be at 7:01 am and sunset at 5:58 pm (EDT).

Today, the daylight will last for 10h and 57min.