Wednesday – Friday
High pressure builds in today as the low pressure over Labrador moves away to the northeast, bringing mostly quiet weather to the Saint John Valley today. Most communities will see highs in the low-to-mid-30s today. Tonight, partly cloudy skies and chilly conditions dominate with lows falling into the mid-to-upper teens.
Thursday stays mostly sunny and tranquil as high pressure settles over the region. Winds become light and variable, and temperatures rise into the mid-30s north across the SJV. Clouds move in from the west by evening as an occluded front approaches.
From Thursday night into Friday night, clouds continue to thicken ahead of a slow-moving occluded front. Friday brings a mix of light snow and rain to the Valley by afternoon changing to light snow in the evening. The front moves through Friday night, with light snow likely for most Valley locations that gradually diminishes overnight. Lows Thursday night in the lower 20s. Highs Friday in the upper 30s, and temperatures in the mid-20s Friday night.
Saturday – Tuesday
An upper-level disturbance will move across northern Maine on Saturday, bringing a chance for some early snow showers. A coastal storm may develop offshore at the same time, but its exact track is still uncertain. For the Saint John Valley, most of the precipitation on Saturday will depend more on the disturbance overhead than the offshore storm, so any snow that does fall should be light and mainly during the first half of the day. Highs in the low-to-mid-30s for most locations.
High pressure builds in Saturday night, bringing partly cloudy conditions with overnight low in the 15–20-degree range. Sunday will be partly sunny and quiet to start, but clouds increase during the evening as a warm front approaches from the southwest. Light precipitation is possible Sunday night, falling mainly as light snow or snow showers across northern Maine.
The warm front moves through on Monday, bringing periods of light precipitation—likely a mix of snow and rain showers. A few stray snow showers may continue into Monday night. Another upper-level disturbance could cross the region on Tuesday, keeping skies partly sunny to mostly cloudy with gradually decreasing chances for rain and/or snow showers.
Temperatures Sunday in the low-to-mid-30s with overnight low in the lower 20s across the Valley. Highs Monday in the mid-30s with lows in the low-to-mid-20s. Highs Tuesday in the middle 30s with overnight lows generally in the lower 20s.
Daily Forecast Outlook
Today: Cloudy with a chance of rain with a slight chance of freezing rain. Patchy fog. Highs in the upper 30s. northeast winds around 5 mph. Chance of precipitation 50 percent.
Tonight: Rain. Patchy fog. Near steady temperature in the mid-30s. East winds around 5 mph. Chance of precipitation near 100 percent.
Thanksgiving Day: Patchy fog in the morning. Mostly cloudy with snow likely with scattered rain showers in the morning, then partly sunny in the afternoon. Little or no snow accumulation. Near steady temperature in the lower 30s. Temperature falling into the lower 30s in the afternoon. Southwest winds 5 to 10 mph with gusts up to 20 mph. Chance of precipitation 70 percent.
Thursday Night: Mostly cloudy. A slight chance of snow showers after midnight. Cold with lows in the mid-20s. Southwest winds 5 to 10 mph. Chance of snow 20 percent.
Friday: Mostly cloudy with a 50 percent chance of snow showers. Little or no snow accumulation. Cold with highs in the lower 30s. Southwest winds 5 to 10 mph with gusts up to 20 mph.
Friday Night: Mostly cloudy. A chance of snow showers in the evening. Cold with lows around 20. Chance of snow 30 percent.
Saturday: Partly sunny. Cold with highs in the mid-20s.
Saturday Night: Partly cloudy in the evening, then becoming mostly cloudy. Colder with lows around 10 above.
Sunday: Mostly cloudy. Snow likely in the afternoon. Cold with highs in the lower 30s. Chance of snow 60 percent.
Sunday Night: Snow likely, mainly in the evening. Not as cold. Near steady temperature in the upper 20s. Chance of snow 70 percent.
Monday: Mostly cloudy with a chance of snow and rain showers. Highs in the mid-30s. Temperature falling into the mid-20s in the afternoon. Chance of precipitation 40 percent.
Monday Night: Mostly cloudy with a 30 percent chance of snow showers. Much colder with lows around 10 above.
Tuesday: Partly sunny in the morning, then mostly cloudy with a chance of snow showers in the afternoon. Colder with highs in the mid-20s. Chance of snow 40 percent.
Tuesday Night: Mostly cloudy with a chance of snow showers. Lows around 10 above. Chance of snow 30 percent.
Weather Notice: The weekly forecast is by UMFK Professor Joseph E. Becker based on available computer models and data and may not reflect current conditions or later forecast updates. Check The County.me or the National Weather Service Caribou, Maine for the most recent weather information for the Saint John Valley.
