3-Day Outlook: Wednesday, May 21 – Friday, May 23
Low pressure will move away to the east while high pressure builds down from the north. Some low-level moisture about 2-5K feet aloft will keep a mix of clouds and sun across the Valley today and partly cloudy skies for the St. John Valley tonight. Some sheltered/low-lying areas may see enough clearing for patchy frost; however, any that occurs is expected to be localized rather than widespread.
High pressure will drift towards Labrador Thursday with partly sunny skies to start the day. Low pressure over the Southeast US will track off the Atlantic coast and move northwards bringing increasing clouds as the day progresses. Mostly cloudy skies Thursday night with increasing chances of rain are expected as the low heads towards coastal Maine. Rain is likely Friday as the low moves quite slowly along the coast towards New Brunswick over the course of the day.
Daily Forecast Summary
Today: Partly sunny this morning, then becoming mostly cloudy. Highs in the mid 50s. East winds 5 to 10 mph.
Tonight: Partly cloudy. Lows in the mid 30s. East winds around 5 mph.
Thursday: Partly sunny in the morning, then becoming mostly cloudy. Highs in the mid 50s. East winds 5 to 10 mph with gusts up to 20 mph.
Thursday Night: Mostly cloudy. A slight chance of rain in the evening, then rain likely after midnight. Lows in the upper 30s. East winds 5 to 10 mph. Chance of rain 70 percent.
Friday: Rain. Highs in the mid 40s. Northeast winds 10 to 15 mph. Chance of rain 90 percent.
Friday Night: Rain. Lows in the upper 30s. Chance of rain 90 percent.
4- to 7-day Outlook: Saturday, May 24 – Tuesday, May 27
The low continues its coastal transit Saturday with rain likely for the Valley into the afternoon. The low moves into the Maritimes Saturday night and begins to lift away with rain tapering to showers overnight. Showers linger into Sunday as wrap-around moisture from the departing low circulates over the SJV. Some scattered showers remain possible Sunday night with skies becoming partly cloudy.
High pressure builds in Memorial Day with partly cloudy to mostly sunny skies and mild temperatures for most of the Valley. Mostly sunny to partly cloudy skies are expected Monday night and Tuesday as high pressure crosses the region and moves east. Low pressure tracking east south of Cape Cod brings a chance of scattered showers to the SJV Tuesday afternoon with partly cloudy skies Tuesday night and a continued chance of scattered showers.
Daily Forecast Summary
Saturday: Rain. Highs in the upper 40s. Chance of rain 80 percent.
Saturday Night: Mostly cloudy. Rain in the evening, then a chance of showers after midnight. Lows in the upper 30s. Chance of rain 80 percent.
Sunday: Mostly cloudy with a 50 percent chance of showers. Highs in the lower 50s.
Sunday Night: Partly cloudy. A chance of showers in the evening. Lows in the upper 30s. Chance of rain 40 percent.
Memorial Day: Partly sunny. Highs in the mid 60s.
Monday Night: Mostly clear in the evening, then becoming partly cloudy. Lows in the lower 40s.
Tuesday: Partly sunny. A chance of showers in the afternoon. Highs in the upper 60s. Chance of rain 40 percent.
Tuesday Night: Partly cloudy, with chance of showers. Lows in the upper 40s. Chance of precipitation is 30 percent.
8- to 14-day Climate Trends: Tuesday, May 27 – Sunday, June 2
Northern Maine: Above normal temperatures / Above normal precipitation
Note: Computer model precision diminishes the further into the week the forecast projects. Check The County.me or the National Weather Service Caribou, ME at for weather updates with more current information for the Saint John Valley.
The Week Ahead is the work of UMFK Professor Joseph E. Becker based on personal weather station data, various computer forecast models, and information that the National Weather Service, NOAA, and other weather resources provide.
