CARIBOU, Maine – A sharp fall chill grips northern Maine this weekend as widespread frost develops early Saturday, signaling a cold snap ahead of the Columbus Day holiday. Bright sunshine will follow, but the chilly start serves as a reminder that winter’s edge is near.
According to the National Weather Service in Caribou, widespread frost is expected across Aroostook County from 7 to 8 a.m. Saturday, with temperatures dipping into the 30s before rebounding into the lower 60s by afternoon. Calm winds and clear skies will create ideal radiational cooling, leading to another frosty morning Sunday and again early Monday. Drivers along U.S. Route 1 and Maine Route 89 should be prepared for reduced visibility and slick rural roads where frost may linger.
The NWS says areas of frost will form again before dawn on Columbus Day, followed by a sunny and mild afternoon near 60°F. Residents planning outdoor events or holiday travel should dress in layers and protect sensitive plants, as repeated frosts may damage late-season gardens. Homeowners are urged to check heating systems and insulate exposed pipes before colder air returns midweek.
Clouds increase Monday night into Tuesday, with only a slight chance of showers by midweek. Conditions remain seasonably cool through Friday as Maine transitions deeper into fall, offering ideal weather for leaf-peeping trips and pumpkin patch visits across the northern counties.
Five-Day Forecast for Caribou, ME:
Sat: 63/32 – Mostly sunny; widespread frost early.
Sun: 60/30 – Sunny; patchy frost at dawn.
Mon (Columbus Day): 60/34 – Mostly sunny; early frost.
Tue: 60/41 – Mostly cloudy; light breeze late.
Wed: 55/43 – Mostly cloudy; slight chance of showers.
