Weather forecast for tomorrowProspect Harbor, ME

Weather forecast for tomorrow

Sunday Oct 18, 2026

  • 52°F
  • 41°F
Sunny
Sunny
  • Precip. probability: 2%
  • Precipitation: 0"
  • Wind: 8mphWSW 247°
  • Humidity: 55%
  • UV index: 3
  • Sunrise: 6:51 am EDT
  • Sunset: 5:43 pm EDT
  • ▼
Tomorrow, on Sunday, October 18, expect bright skies and plenty of sunshine.
Expected temperature values will span from a cool 51.8°F down to a wintry 41°F.
The top temperature for tomorrow will be a couple of degrees lower than the average high in October of 55.9°F.
Sunrise will be at 6:51 am and sunset at 5:43 pm; tomorrow's daylight will last for 10h and 52min.

Hourly overview

Hourly temperatures

Warmest hour: 3 pm 50°C.
Coldest hour: 6 am 32°C.

Chance of precipitation

Highest chance: 9 pm 3%.

Hourly weather forecast

  • 12 am
  • 34°F
  • Feels like:
    30°F
Clear
Clear
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 4mphNW 318°
  • Humidity: 63%
  • Pressure: 30.33"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 2 am
  • 34°F
  • Feels like:
    28°F
Clear
Clear
  • Precip. probability: 1%
  • Precipitation: 0"
  • Wind: 5mphNW 308°
  • Humidity: 68%
  • Pressure: 30.36"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 4 am
  • 32°F
  • Feels like:
    28°F
Clear
Clear
  • Precip. probability: 1%
  • Precipitation: 0"
  • Wind: 5mphWNW 303°
  • Humidity: 70%
  • Pressure: 30.42"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 6 am
  • 32°F
  • Feels like:
    28°F
Clear
Clear
  • Precip. probability: 2%
  • Precipitation: 0"
  • Wind: 4mphWNW 298°
  • Humidity: 74%
  • Pressure: 30.47"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
Sunrise: 6:51 am
  • 8 am
  • 36°F
  • Feels like:
    36°F
Sunny
Sunny
  • Precip. probability: 1%
  • Precipitation: 0"
  • Wind: 2mphWNW 298°
  • Humidity: 72%
  • Pressure: 30.5"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 10 am
  • 43°F
  • Feels like:
    41°F
Sunny
Sunny
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 4mphW 269°
  • Humidity: 53%
  • Pressure: 30.53"Hg
  • Visibility: 10mi
  • UV index: 2
  • ▼
  • 12 pm
  • 48°F
  • Feels like:
    45°F
Sunny
Sunny
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 6mphSW 234°
  • Humidity: 46%
  • Pressure: 30.5"Hg
  • Visibility: 10mi
  • UV index: 3
  • ▼
  • 2 pm
  • 50°F
  • Feels like:
    46°F
Sunny
Sunny
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 8mphSW 227°
  • Humidity: 46%
  • Pressure: 30.5"Hg
  • Visibility: 10mi
  • UV index: 2
  • ▼
  • 4 pm
  • 50°F
  • Feels like:
    46°F
Sunny
Sunny
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 7mphSW 227°
  • Humidity: 48%
  • Pressure: 30.5"Hg
  • Visibility: 10mi
  • UV index: 1
  • ▼
Sunset: 5:43 pm
  • 6 pm
  • 46°F
  • Feels like:
    45°F
Clear
Clear
  • Precip. probability: 1%
  • Precipitation: 0"
  • Wind: 4mphSW 227°
  • Humidity: 60%
  • Pressure: 30.53"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 8 pm
  • 43°F
  • Feels like:
    43°F
Clear
Clear
  • Precip. probability: 3%
  • Precipitation: 0"
  • Wind: 3mphSW 217°
  • Humidity: 74%
  • Pressure: 30.53"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 10 pm
  • 43°F
  • Feels like:
    41°F
Clear
Clear
  • Precip. probability: 4%
  • Precipitation: 0"
  • Wind: 4mphSSW 194°
  • Humidity: 78%
  • Pressure: 30.53"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
Tomorrow, bright and mostly sunny weather is expected.
The temperature will be between the lowest temperature of 32°F and the highest temperature of 50°F. The warmest part of the day will be from 2 pm to 4 pm.
The temperature is expected to be moderately lower than the average peak in October, which is 55.9°F. Tomorrow, the low will be also a few degrees lower than the usual October value of 45°F.
Updated: Oct 18, 2026 @ 01:36:16 UTC
Published by: Weather U.S. | About Us
Data Sources | weather.com | Weather
Weather Forecasting & Climate

Frequently asked questions

On Sunday, in Prospect Harbor, sunshine is forecasted under mostly clear skies.

Tomorrow, the highest temperature will be 51.8°F, while the lowest temperature will be 41°F.
The highest temperature tomorrow will be moderately lower than the average maximum temperature in October. The lowest temperature will be also moderately lower than the average low of 45°F.

On Sunday, in Prospect Harbor, sunrise will be at 6:51 am and sunset at 5:43 pm (EDT).

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