Caribou, Maine – Northern Maine braces for its first taste of fall tonight as a frost advisory takes hold. Residents from Caribou to Houlton should cover tender plants or risk losing gardens to freezing overnight air.
According to the National Weather Service in Caribou, temperatures could fall as low as 34 degrees from 11 p.m. Monday until 8 a.m. Tuesday. The advisory stretches across Northern Penobscot, Aroostook, Piscataquis, and Somerset counties. Drivers along I-95 may also encounter patchy fog, adding travel concerns for the early Tuesday commute.
Sensitive outdoor vegetation will be most at risk, with frost forming on exposed surfaces if left uncovered. Homeowners are urged to bring potted plants inside and cover gardens with sheets or tarps. Those with livestock should also prepare shelters for cooler overnight air.
Tuesday will rebound into the upper 60s under sunny skies, but the crisp fall pattern holds through the week. High pressure will dominate, keeping days bright and dry while nights remain chilly. The coldest period arrives Friday night, when lows could dip into the upper 30s.
With summer heat fading fast, residents should prepare for cooler nights, longer mornings with fog, and an early start to fall conditions across Maine. Additional advisories remain possible later this week if temperatures drop again.
Five-Day Forecast for Caribou, Maine:
- Tuesday: Sunny, high near 67. Patchy frost early. Low near 40.
- Wednesday: Sunny, high near 73. Low near 47.
- Thursday: Mostly sunny, high near 68. Slight chance of evening showers. Low near 42.
- Friday: Sunny, high near 64. Low around 38.
- Saturday: Mostly sunny, high near 67. Low near 47.
