Wednesday, April 22-Friday, April 24
A weak trough over north-central Maine will dissipate this morning as a weakening cold front approaches from the west. Through the day, expect partly sunny skies with highs reaching the upper 40s and light south winds around 5 mph. Isolated rain showers may develop during the mid-afternoon hours, but coverage will remain limited.
Tonight, a wave of low pressure is expected to form along or just ahead of the approaching front and move into Maine by early Thursday. This will bring mostly cloudy skies with a slight chance of rain showers in the evening, followed by a chance of rain and snow showers after midnight. Lows will settle in the lower 30s, and up to 1-inch of snow accumulation is possible.
On Thursday, the low pressure system will track east across the region, bringing mostly cloudy conditions with a chance of mixed rain and snow showers during the morning. Any lingering snow showers will transition to rain showers by the mid-afternoon hours as temperatures rise into the lower 40s, with little or no additional snow accumulation expected. Showers will gradually taper off Thursday evening, with just a slight chance of lingering rain early in the evening and lows falling into the upper 20s under mostly cloudy skies.
High pressure will begin to build into the region late Thursday night and continue into Friday, bringing partly cloudy to partly sunny skies. North to northwest winds will increase to 5 to 10 mph, with gusts up to 20 mph across the Valley on Friday. High temperatures will remain in the lower 40s, followed by partly cloudy skies Friday night with lows again dropping into the upper 20s.
Saturday, April 25-Tuesday, April 28
High pressure will build in from the Great Lakes on Saturday and continue to strengthen over the region through Sunday, bringing a stretch of dry and tranquil weather. Expect mostly sunny skies during the day and partly cloudy conditions at night. High temperatures will reach the upper 40s on Saturday, followed by lows in the low 30s Saturday night. By Sunday, moderating temperatures will bring highs into the low 50s, with overnight lows settling in the mid-30s under partly cloudy skies.
The high will remain in control as it crosses the region on Monday, supporting mostly sunny conditions and continued warming. Afternoon highs will climb into the upper 50s, while nighttime lows hold in the mid-30s with partly cloudy skies. By Tuesday, the high will begin shifting into the Maritimes, but mostly sunny conditions will persist through the day with highs again in the upper 50s.
Tuesday night will bring a slight increase in cloud cover along with a chance of rain as the high moves farther east and low pressure approaches from the west. Lows will dip into the upper 30s under partly cloudy skies, with only a slight chance of precipitation.
Daily Forecast
Today: Partly sunny. Isolated rain showers this afternoon. Highs in the upper 40s. South winds around 5 mph. Chance of rain 20%.
Tonight: Mostly cloudy. A slight chance of rain showers in the evening, then a chance of rain and snow showers after midnight. Snow accumulation up to 1 inch possible. Not as cool with lows in the lower 30s. Southwest winds around 5 mph. Chance of precipitation 50%.
Thursday: Mostly cloudy with a chance of snow and rain showers. Little or no snow accumulation. Highs in the lower 40s. North winds 5 to 10 mph. Chance of precipitation 50%.
Thursday Night: Mostly cloudy. A slight chance of rain showers in the evening. Lows in the upper 20s. Northwest winds 5 to 10 mph. Chance of rain 20%.
Friday: Partly sunny. Highs in the lower 40s. North winds 5 to 10 mph with gusts up to 20 mph.
Friday Night: Partly cloudy. Lows in the upper 20s.
Saturday: Mostly sunny. Highs in the upper 40s.
Saturday Night: Partly cloudy. Lows in the lower 30s.
Sunday: Mostly sunny. Highs in the lower 50s.
Sunday Night: Partly cloudy. Lows in the mid 30s.
Monday: Mostly sunny. Highs in the upper 50s.
Monday Night: Partly cloudy. Lows in the mid-30s.
Tuesday: Mostly sunny. Highs in the upper 50s.
Tuesday Night: Slight chance of rain. Partly cloudy. Lows in the upper 30s. Chance of rain 20%.
Weather Notice: The weekly forecast, by UMFK Professor Joseph E. Becker, is 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.
