Station CASM1 - 8418150 - Portland, ME
December 20, 2025 6:48 pm ESTLocation: 43.656N 70.246W
Wind Direction: SSW (200°)
Wind Speed: 8.0 knots
Wind Gust: 11.1 knots
Atmospheric Pressure: 30.03 in (1016.9 mb)
Water Temperature: 38.8°F (3.8°C)
Tonight - 35°F
Dec 20, 2025
15 to 30 mph SW
Cloudy then Slight Chance Rain And Snow Showers
A slight chance of rain and snow showers after 3am. Cloudy, with a low around 35. Southwest wind 15 to 30 mph, with gusts as high as 40 mph. Chance of precipitation is 20%.
Sunday - 42°F
Dec 21, 2025
20 to 25 mph W
Slight Chance Rain And Snow Showers then Mostly Sunny
A slight chance of rain and snow showers before 8am. Mostly sunny. High near 42, with temperatures falling to around 35 in the afternoon. West wind 20 to 25 mph, with gusts as high as 35 mph. Chance of precipitation is 20%.
Sunday Night - 22°F
Dec 21, 2025
20 to 25 mph NW
Partly Cloudy
Partly cloudy, with a low around 22. Northwest wind 20 to 25 mph, with gusts as high as 35 mph.
Monday - 29°F
Dec 22, 2025
15 to 20 mph NW
Sunny
Sunny, with a high near 29. Northwest wind 15 to 20 mph, with gusts as high as 30 mph.
Monday Night - 24°F
Dec 22, 2025
5 to 15 mph NW
Partly Cloudy
Partly cloudy, with a low around 24. Northwest wind 5 to 15 mph.
Tuesday - 38°F
Dec 23, 2025
10 to 15 mph SW
Rain And Snow
Snow likely before noon, then rain and snow. Cloudy, with a high near 38. Chance of precipitation is 80%. New snow accumulation of 1 to 3 inches possible.
Tuesday Night - 28°F
Dec 23, 2025
15 to 20 mph NW
Rain And Snow Likely
Rain and snow likely. Mostly cloudy, with a low around 28. Chance of precipitation is 70%. New snow accumulation of less than half an inch possible.
Wednesday - 34°F
Dec 24, 2025
15 to 20 mph NW
Slight Chance Light Snow then Mostly Sunny
A slight chance of snow before 7am. Mostly sunny, with a high near 34.
Wednesday Night - 25°F
Dec 24, 2025
5 to 15 mph NW
Mostly Cloudy
Mostly cloudy, with a low around 25.
Christmas Day - 35°F
Dec 25, 2025
5 to 10 mph W
Mostly Cloudy then Slight Chance Light Rain
A slight chance of rain after 5pm. Mostly cloudy, with a high near 35.
Thursday Night - 30°F
Dec 25, 2025
10 mph W
Chance Rain And Snow
A slight chance of rain before 10pm, then a chance of rain and snow. Mostly cloudy, with a low around 30. Chance of precipitation is 30%.
Friday - 38°F
Dec 26, 2025
10 to 15 mph SW
Chance Rain And Snow
A chance of rain and snow. Partly sunny, with a high near 38. Chance of precipitation is 40%.
Friday Night - 27°F
Dec 26, 2025
15 mph NW
Slight Chance Light Rain then Mostly Cloudy
A slight chance of rain before 8pm. Mostly cloudy, with a low around 27.
Saturday - 34°F
Dec 27, 2025
15 mph NW
Slight Chance Light Snow then Chance Light Rain
A slight chance of snow between 7am and 11am, then a chance of rain. Partly sunny, with a high near 34.