CARIBOU, Maine – Frosty mornings are set to make a comeback across Aroostook County as a fall chill grips northern Maine by Tuesday. After a bright and seasonable Columbus Day, colder air will slide in from Canada, setting up patchy frost before sunrise and a chance for scattered showers later in the week.
According to the National Weather Service in Caribou, widespread frost is likely early Tuesday, particularly across rural lowlands and open fields near U.S. Route 1 and Route 89. Homeowners are urged to cover garden plants, protect outdoor plumbing, and bring pets inside Monday night. The cold snap follows a mild holiday, with daytime highs dropping nearly 20 degrees by midweek.
Forecasters expect clouds to increase Tuesday afternoon with a 20–30% chance of light rain showers extending into Wednesday. Winds will shift northwest, gusting to 15 mph, making it feel colder for early commuters and students heading back to school after the long weekend. By Wednesday night, a mix of rain and snow showers may brush higher terrain north of Caribou as temperatures dip into the 30s.
Travelers along I-95 and Route 161 should expect damp pavement and limited visibility at times through Thursday morning. Skies gradually clear by Friday, with temperatures rebounding slightly into the upper 50s—ideal for late-week leaf viewing or final pumpkin patch trips before a chilly weekend.
Five-Day Forecast for Caribou, ME:
Mon: 59/34 – Mostly sunny; light east breeze.
Tue: 58/40 – Patchy frost early; clouds build, slight chance of showers.
Wed: 52/38 – Breezy; scattered rain showers, possible mix north late.
Thu: 48/40 – Rain and snow showers early; chilly, mostly cloudy.
Fri: 56/41 – Partly sunny; mild, good leaf-viewing weather.
