3-Day Outlook: Wednesday, March 19 – Friday, March 21
The vernal equinox occurs at 5:01 a.m. ET on Thursday, March 20.
High pressure over the Valley this morning will move east today into Thursday. Mostly sunny skies start the day Wednesday with partly to mostly cloudy skies developing in the afternoon and evening hours as a low pressure system and upper-level trough approach from the Great Lakes.
Partly cloudy skies with breezy south winds are expected Thursday as the frontal system approaches. Mostly cloudy skies with a chance of rain develop in the evening with a chance of rain overnight into Friday. Rain is likely Friday as a cold front crosses the St. John Valley. Colder air moving into the region allows precipitation to change to a rain/snow mix in the evening then to all snow Friday night.
River levels/flooding outlook: The recent warmth and rainfall has led to rising rivers, which is leading to the break-up of thinning river ice. Localized ice jam flooding is possible.
Daily Summary
Today: Patchy fog late this morning. Partly sunny. Highs in the mid 40s. Southeast winds 5 to 10 mph.
Tonight: Partly cloudy. Lows in the mid-30s. Southeast winds 5 to 10 mph.
Thursday: Partly sunny. Highs in the lower 50s. South winds 10 to 15 mph with gusts up to 25 mph.
Thursday Night: Mostly cloudy. Patchy fog. A chance of rain after midnight. Lows in the mid-30s. South winds 10 to 15 mph. Chance of rain 50 percent.
Friday: Patchy fog in the morning. Rain likely. Snow likely in the afternoon. Little or no snow accumulation. Highs in the lower 40s. South winds around 5 mph, becoming northwest in the afternoon. Chance of precipitation 70 percent.
Friday Night: Snow with a slight chance of rain showers in the evening, then snow likely after midnight. Lows in the mid-20s. Chance of precipitation 90 percent.
4- to 7-Day Outlook: Saturday, March 22 – Tuesday, March 25
Snow tapers to snow showers Saturday morning then to isolated rain showers Saturday evening with a slight chance of rain/snow showers overnight into Sunday. High pressure builds across the area Sunday into Monday with partly sunny/partly cloudy skies across the SJV. An low pressure system brings a chance of snow to the Valley Monday night into Tuesday. A chance of rain mixing with snow is possible Tuesday afternoon with a chance of snow Tuesday night.
Daily Summary
Saturday: A chance of snow showers in the morning. Partly sunny. Highs in the mid-40s. Chance of snow 50 percent.
Saturday Night: Partly cloudy. Lows around 20.
Sunday: Partly sunny. Cooler with highs around 30.
Sunday Night: Mostly clear. Lows around 10 above.
Monday: Mostly sunny in the morning, then becoming partly sunny. Highs in the mid-30s.
Monday Night: Mostly cloudy. A chance of snow in the evening, then snow likely after midnight. Lows in the lower 20s. Chance of snow 70 percent.
Tuesday: Mostly cloudy. Snow likely in the morning, then a chance of snow and rain in the afternoon. Highs in the lower 40s. Chance of precipitation 60 percent.
Tuesday Night: Partly cloudy with a low near 23°. Chance of precipitation is 30 percent.
8- to 14-Day Regional Climate Trends: Wednesday, March 26 – Tuesday, April 1
Below normal temperatures / Near 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.
