Caribou, Maine – Northern Maine will swing from late-summer warmth to early signs of frost as showers fade tonight and cooler air moves in by the weekend. Drivers and gardeners across Aroostook County should prepare for temperatures dipping into the 30s overnight, with patchy frost developing as soon as Friday night.
According to the National Weather Service in Caribou, scattered showers are expected this evening before skies clear overnight. Lows will hover near 50, but a stronger push of cool Canadian air will bring northwest winds up to 30 mph Friday before calming into the weekend. That sets the stage for clear, chilly nights, with frost possible across rural valleys Saturday and Sunday mornings.
Daytime conditions will stay pleasant, with highs near 60 Saturday and mid-60s Sunday, but the rapid drop after sunset could catch late-season crops and outdoor plans off guard. Residents are advised to cover sensitive vegetation, bring pets indoors, and avoid leaving water lines exposed overnight.
Calm, dry weather continues into early next week, with a slight chance of showers returning Monday night into Tuesday. The risk of frost lingers for Caribou and surrounding towns through at least Sunday.
Five Day Forecast for Caribou, ME
Friday: Sunny, high near 61. Breezy with gusts up to 30 mph. Low around 35, patchy frost late.
Saturday: Sunny, high near 60. Low around 32 with widespread frost possible.
Sunday: Frost early, then sunny with highs near 66. Low near 44.
Monday: Mostly sunny, high near 72. Chance of showers late, 20–50%. Low near 55.
Tuesday: Showers likely, high near 72. Low near 48.
