Weather forecast for 10 daysCastine, ME

Weather forecast for the weekend

Sunday Oct 18, 2026

  • 54°F
  • 41°F
Sunny
Sunny
  • Precip. probability: 2%
  • Precipitation: 0"
  • Wind: 9mphSW 231°
  • Humidity: 53%
  • UV index: 3
  • Sunrise: 6:54 am EDT
  • Sunset: 5:46 pm EDT
  • ▼
Tomorrow, on Sunday, October 18, conditions remain stable and sunny, with little cloud presence.
Forecasted temperatures will peak at a cool 53.6°F and dip to a minimum of a cold 41°F.
The highest temperature is predicted to follow the average for October, around 55.8°F.
Sunrise will be at 6:54 am and sunset at 5:46 pm; tomorrow's daylight will last for 10h and 52min.

10-day overview

Daily temperatures

Warmest day: Monday 26.10. 63°C.
Minimum temperature: 54°C.

Chance of precipitation

Highest chance: Monday 26.10. 24%.

Long-term weather forecast

  • Saturday
  • Oct 17, 2026
  • min.
  • 30°F
Clear
Clear
  • Precip. probability: 2%
  • Precipitation: 0"
  • Wind: 5mphNW 309°
  • Humidity: 67%
  • UV index: 0
  • Sunrise: 6:53 am EDT
  • Sunset: 5:47 pm EDT
  • ▼
  • Sunday
  • Oct 18, 2026
  • 54°F
  • 41°F
Sunny
Sunny
  • Precip. probability: 2%
  • Precipitation: 0"
  • Wind: 9mphSW 231°
  • Humidity: 53%
  • UV index: 3
  • Sunrise: 6:54 am EDT
  • Sunset: 5:46 pm EDT
  • ▼
  • Monday
  • Oct 19, 2026
  • 57°F
  • 39°F
Mostly Sunny
Mostly Sunny
  • Precip. probability: 5%
  • Precipitation: 0"
  • Wind: 9mphS 184°
  • Humidity: 69%
  • UV index: 3
  • Sunrise: 6:55 am EDT
  • Sunset: 5:44 pm EDT
  • ▼
  • Tuesday
  • Oct 20, 2026
  • 61°F
  • 37°F
AM Clouds / PM Sun
AM Clouds / PM Sun
  • Precip. probability: 7%
  • Precipitation: 0"
  • Wind: 12mphN 8°
  • Humidity: 63%
  • UV index: 2
  • Sunrise: 6:56 am EDT
  • Sunset: 5:43 pm EDT
  • ▼
  • Wednesday
  • Oct 21, 2026
  • 55°F
  • 37°F
Sunny
Sunny
  • Precip. probability: 5%
  • Precipitation: 0"
  • Wind: 9mphNNE 32°
  • Humidity: 64%
  • UV index: 3
  • Sunrise: 6:58 am EDT
  • Sunset: 5:41 pm EDT
  • ▼
  • Thursday
  • Oct 22, 2026
  • 57°F
  • 37°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 12%
  • Precipitation: 0"
  • Wind: 9mphN 359°
  • Humidity: 69%
  • UV index: 3
  • Sunrise: 6:59 am EDT
  • Sunset: 5:39 pm EDT
  • ▼
  • Friday
  • Oct 23, 2026
  • 54°F
  • 32°F
Mostly Sunny
Mostly Sunny
  • Precip. probability: 7%
  • Precipitation: 0"
  • Wind: 14mphN 5°
  • Humidity: 57%
  • UV index: 3
  • Sunrise: 7:00 am EDT
  • Sunset: 5:38 pm EDT
  • ▼
  • Saturday
  • Oct 24, 2026
  • 54°F
  • 36°F
Sunny
Sunny
  • Precip. probability: 5%
  • Precipitation: 0"
  • Wind: 7mphN 355°
  • Humidity: 59%
  • UV index: 3
  • Sunrise: 7:02 am EDT
  • Sunset: 5:36 pm EDT
  • ▼
  • Sunday
  • Oct 25, 2026
  • 59°F
  • 41°F
Mostly Sunny
Mostly Sunny
  • Precip. probability: 9%
  • Precipitation: 0"
  • Wind: 9mphW 262°
  • Humidity: 63%
  • UV index: 3
  • Sunrise: 7:03 am EDT
  • Sunset: 5:35 pm EDT
  • ▼
  • Monday
  • Oct 26, 2026
  • 63°F
  • 41°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 24%
  • Precipitation: 0"
  • Wind: 8mphNW 307°
  • Humidity: 62%
  • UV index: 3
  • Sunrise: 7:04 am EDT
  • Sunset: 5:33 pm EDT
  • ▼
In the days ahead, a combination of dry and sunny and overcast weather is predicted.
Rain is not forecasted in Castine in the upcoming days.
In the upcoming period, the highest temperature will range between 53.6°F and 62.6°F, while the low temperature range extends from 30.2°F to 41°F.
The warmest day will be next Monday, with a maximum of 62.6°F; the coldest days will be Sunday, Friday and next Saturday, with a maximum of 53.6°F.
Updated: Oct 18, 2026 @ 02:27:47 UTC
Published by: Weather U.S. | About Us
Data Sources | weather.com | Weather
Weather Forecasting & Climate

Frequently asked questions

Tomorrow, sunshine is forecasted under mostly clear skies.

Tomorrow, the highest temperature will be 53.6°F, while the lowest temperature will be 41°F.
Tomorrow, the maximum temperature will be in line with the average highest temperature in October. The lowest temperature tomorrow will be also in line with the average low temperature.

On Sunday, in Castine, sunrise will be at 6:54 am and sunset at 5:46 pm (EDT).

In Castine, the length of the day tomorrow will be 10h and 52min.