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 St. John Valley. 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: Mostly sunny. Highs in the lower 30s. Temperature falling into the upper 20s this afternoon. West winds 5 to 10 mph with gusts up to 20 mph.
Tonight: Partly cloudy in the evening, then becoming mostly cloudy. Cold with lows around 17. West winds around 5 mph.
Thursday: Mostly sunny. Highs in the mid-30s. Temperature falling to around 30 in the afternoon. Southwest winds around 5 mph.
Thursday Night: Mostly cloudy. Cold with lows in the lower 20s. South winds around 5 mph.
Friday: Mostly cloudy. A chance of snow in the morning, then snow likely in the afternoon. Little or no snow accumulation. Highs in the upper 30s. South winds 5 to 10 mph. Chance of snow 70 percent.
Friday Night: Snow likely. Light snow accumulation possible. Cold with lows in the mid-20s. Chance of snow 70 percent.
Saturday: Partly sunny. A chance of snow showers in the morning. Highs in the lower 30s. Temperature falling into the upper 20s in the afternoon. Chance of snow 40 percent.
Saturday Night: Partly cloudy. Cold with lows 15 to 20.
Sunday: Partly sunny. Cold with highs in the lower 30s.
Sunday Night: Mostly cloudy. A chance of snow showers after midnight. Cold. Near steady temperature in the lower 20s. Chance of snow 30 percent.
Monday: Mostly cloudy with a 30 percent chance of snow showers. Highs in the mid-30s.
Monday Night: Mostly cloudy with a 40 percent chance of snow showers. Cold with lows in the lower 20s.
Tuesday: Partly sunny in the morning, then becoming mostly cloudy. A 40 percent chance of snow showers. Highs in the mid-30s.
Tuesday Night: Mostly cloudy with a 20 percent chance of snow showers. Cold with lows in the lower 20s.
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.
