CARIBOU, Maine – A sharp turn toward colder, calmer air will follow a stretch of midweek rain across northern Maine, setting up the season’s first widespread frost potential by early Friday. Gardeners and farmers should take immediate precautions to cover tender plants and protect equipment from freezing conditions.
According to the National Weather Service in Caribou, a cold front sweeping through Thursday will bring steady rain before clearing skies and a surge of dry, chilly air. By late Thursday night into early Friday, temperatures will dip into the low-30s, with patchy frost likely across Aroostook County and open fields along Route 1 and near Presque Isle.
Friday itself turns bright and calm, offering a crisp fall day ideal for leaf-peeping or pumpkin patch visits — though the chill lingers. Winds will ease, but temperatures will stay near seasonal lows, keeping the frost concern alive into Saturday morning.
Maine DOT advises motorists to stay alert for slick spots early Friday on shaded rural routes and bridges where surface frost may develop. Homeowners should drain hoses and protect outdoor faucets. Pet owners are urged to provide warm shelter as nighttime lows continue to drop this weekend.
Another round of clear, cool weather will dominate through Sunday before a gradual warm-up begins early next week.
Five-Day Forecast for Caribou, ME:
Wed: 51/37 – Mostly cloudy; light rain possible early.
Thu: 48/37 – Rain likely; north winds increasing.
Fri: 55/34 – Mostly sunny; areas of frost early.
Sat: 59/35 – Partly cloudy; patchy frost before dawn.
Sun: 62/42 – Mostly sunny; milder afternoon warmth returns.
