Station CASM1 - 8418150 - Portland, ME
May 17, 2026 6:48 am EDTLocation: 43.656N 70.246W
Wind Direction: WSW (240°)
Wind Speed: 6.0 knots
Wind Gust: 11.1 knots
Atmospheric Pressure: 29.81 in (1009.5 mb)
Water Temperature: 49.5°F (9.7°C)
Today - 67°F
May 17, 2026
10 to 15 mph W
Sunny
Sunny, with a high near 67. West wind 10 to 15 mph, with gusts as high as 25 mph. New rainfall amounts less than a tenth of an inch possible.
Tonight - 50°F
May 17, 2026
5 to 15 mph N
Partly Cloudy
Partly cloudy, with a low around 50. North wind 5 to 15 mph.
Monday - 55°F
May 18, 2026
5 to 15 mph SE
Mostly Sunny
Mostly sunny, with a high near 55. Southeast wind 5 to 15 mph.
Monday Night - 49°F
May 18, 2026
10 mph S
Mostly Clear
Mostly clear, with a low around 49. South wind around 10 mph.
Tuesday - 68°F
May 19, 2026
10 to 15 mph SW
Sunny
Sunny, with a high near 68. Southwest wind 10 to 15 mph, with gusts as high as 25 mph.
Tuesday Night - 61°F
May 19, 2026
15 mph SW
Partly Cloudy
Partly cloudy, with a low around 61.
Wednesday - 70°F
May 20, 2026
15 to 20 mph SW
Mostly Sunny then Chance Showers And Thunderstorms
A chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 70. Chance of precipitation is 50%.
Wednesday Night - 51°F
May 20, 2026
15 mph W
Chance Showers And Thunderstorms then Partly Cloudy
A chance of showers and thunderstorms before 10pm. Partly cloudy, with a low around 51. Chance of precipitation is 40%.
Thursday - 57°F
May 21, 2026
10 to 15 mph NW
Mostly Sunny
Mostly sunny, with a high near 57.
Thursday Night - 46°F
May 21, 2026
5 to 10 mph NW
Partly Cloudy
Partly cloudy, with a low around 46.
Friday - 54°F
May 22, 2026
5 to 15 mph SW
Mostly Sunny
Mostly sunny, with a high near 54.
Friday Night - 46°F
May 22, 2026
5 to 15 mph SW
Partly Cloudy
Partly cloudy, with a low around 46.
Saturday - 54°F
May 23, 2026
5 to 10 mph S
Partly Sunny
Partly sunny, with a high near 54.
Saturday Night - 47°F
May 23, 2026
5 to 10 mph SE
Mostly Cloudy then Slight Chance Rain Showers
A slight chance of rain showers after 4am. Mostly cloudy, with a low around 47.