Weather forecast for 10 daysAlton Bay, NH

Weather forecast for the weekend

Sunday Oct 18, 2026

  • 55°F
  • 34°F
Sunny
Sunny
  • Precip. probability: 1%
  • Precipitation: 0"
  • Wind: 5mphSW 221°
  • Humidity: 44%
  • UV index: 3
  • Sunrise: 7:02 am EDT
  • Sunset: 5:57 pm EDT
  • ▼
Today, in Alton Bay, the outlook remains bright and sunny.
Temperature span will be from a high of a refreshing 55.4°F to a low of a wintry 33.8°F.
October's standard high of 55.9°F is predicted to be reached during the day.
Sunrise was at 7:02 am and sunset will be at 5:57 pm; the daylight will last for 10h and 54min.

10-day overview

Daily temperatures

Warmest day: Monday 26.10. 64°C.
Minimum temperature: 55°C.

Chance of precipitation

Highest chance: Monday 26.10. 11%.

Long-term weather forecast

  • Sunday
  • Oct 18, 2026
  • 55°F
  • 34°F
Sunny
Sunny
  • Precip. probability: 1%
  • Precipitation: 0"
  • Wind: 5mphSW 221°
  • Humidity: 44%
  • UV index: 3
  • Sunrise: 7:02 am EDT
  • Sunset: 5:57 pm EDT
  • ▼
  • Monday
  • Oct 19, 2026
  • 63°F
  • 39°F
Sunny
Sunny
  • Precip. probability: 5%
  • Precipitation: 0"
  • Wind: 3mphSSW 204°
  • Humidity: 58%
  • UV index: 3
  • Sunrise: 7:04 am EDT
  • Sunset: 5:55 pm EDT
  • ▼
  • Tuesday
  • Oct 20, 2026
  • 63°F
  • 36°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 7%
  • Precipitation: 0"
  • Wind: 9mphNNE 19°
  • Humidity: 60%
  • UV index: 3
  • Sunrise: 7:05 am EDT
  • Sunset: 5:53 pm EDT
  • ▼
  • Wednesday
  • Oct 21, 2026
  • 57°F
  • 36°F
Mostly Sunny
Mostly Sunny
  • Precip. probability: 5%
  • Precipitation: 0"
  • Wind: 8mphNE 43°
  • Humidity: 61%
  • UV index: 3
  • Sunrise: 7:06 am EDT
  • Sunset: 5:52 pm EDT
  • ▼
  • Thursday
  • Oct 22, 2026
  • 61°F
  • 36°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 7%
  • Precipitation: 0"
  • Wind: 7mphNNW 332°
  • Humidity: 60%
  • UV index: 3
  • Sunrise: 7:07 am EDT
  • Sunset: 5:50 pm EDT
  • ▼
  • Friday
  • Oct 23, 2026
  • 55°F
  • 30°F
Mostly Sunny
Mostly Sunny
  • Precip. probability: 8%
  • Precipitation: 0"
  • Wind: 8mphN 352°
  • Humidity: 52%
  • UV index: 3
  • Sunrise: 7:09 am EDT
  • Sunset: 5:49 pm EDT
  • ▼
  • Saturday
  • Oct 24, 2026
  • 55°F
  • 32°F
Sunny
Sunny
  • Precip. probability: 6%
  • Precipitation: 0"
  • Wind: 5mphNW 323°
  • Humidity: 55%
  • UV index: 3
  • Sunrise: 7:10 am EDT
  • Sunset: 5:47 pm EDT
  • ▼
  • Sunday
  • Oct 25, 2026
  • 61°F
  • 37°F
Mostly Sunny
Mostly Sunny
  • Precip. probability: 8%
  • Precipitation: 0"
  • Wind: 6mphWNW 284°
  • Humidity: 52%
  • UV index: 3
  • Sunrise: 7:11 am EDT
  • Sunset: 5:46 pm EDT
  • ▼
  • Monday
  • Oct 26, 2026
  • 64°F
  • 37°F
Sunny
Sunny
  • Precip. probability: 11%
  • Precipitation: 0"
  • Wind: 7mphWNW 299°
  • Humidity: 57%
  • UV index: 3
  • Sunrise: 7:12 am EDT
  • Sunset: 5:44 pm EDT
  • ▼
  • Tuesday
  • Oct 27, 2026
  • 55°F
  • 32°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 7%
  • Precipitation: 0"
  • Wind: 7mphNW 317°
  • Humidity: 56%
  • UV index: 3
  • Sunrise: 7:14 am EDT
  • Sunset: 5:43 pm EDT
  • ▼
It is expected that a combination of mostly clear and overcast weather is forecasted.
Rainfall is not predicted in Alton Bay in the upcoming period.
In the upcoming days, the highest temperature will range between 55.4°F and 64.4°F, while the low temperature range extends from 30.2°F to 39.2°F.
The warmest day will be next Monday, with a maximum of 64.4°F; with a maximum temperature of 55.4°F, Sunday, Friday, Saturday and next Tuesday will be the coldest days.
Updated: Oct 18, 2026 @ 17:46:53 UTC
Published by: Weather U.S. | About Us
Data Sources | weather.com | Weather
Weather Forecasting & Climate

Frequently asked questions

On Sunday, uninterrupted sunshine is anticipated.

Today, the highest temperature will be 55.4°F, while the lowest temperature will be 33.8°F.
Today, the maximum temperature will be in line with the average highest temperature in October. The lowest temperature will be slightly cooler than the average low of 40.8°F.

On Sunday, in Alton Bay, sunrise was at 7:02 am and sunset will be at 5:57 pm (EDT).

In Alton Bay, the length of the day today will be 10h and 54min.