CARIBOU, Maine – Clear skies and light winds will lead to a frosty, cool night across northern Maine, with lows dipping into the upper 20s in the north and mid-30s in the Central Highlands. The National Weather Service in Caribou warns that patchy frost is likely in northern valleys and sheltered areas, while southern and coastal zones hold near 40 degrees.
According to the NWS Caribou office, high pressure is sliding east toward Nova Scotia as a secondary system drops south from Canada tonight. Gusty afternoon winds will ease after sunset, allowing temperatures to fall quickly. Some frost is expected on the ground by early Sunday morning, especially north of Houlton and west of Presque Isle. Drivers may encounter pockets of fog in river valleys by dawn.
Attention then turns to the coast, where an east coast storm will increase surf and wind on Monday. Wave heights between 7 and 10 feet are forecast along the Downeast shoreline, including Bar Harbor, Machias, and Cutler. Small Craft and High Surf Advisories are likely, and beachgoers are urged to avoid jetties and use caution near the water.
Residents are encouraged to cover sensitive plants, bring pets indoors, and use caution when driving through fog or over wet leaves. Coastal communities should prepare for rough surf and potential rip currents starting Monday morning.