St. John Valley weather for Nov. 16-22, 2022
3-day outlook: Wednesday-Friday
Low pressure will track from the mid-Atlantic this morning to the southern New England coast this afternoon then across the Bay of Fundy this evening and move across Prince Edward Island tonight. Thanks to abundant moisture aloft, with snowfall rates of around 1 inch per hour, heavy snow is expected to overspread the Valley this afternoon and continue into the evening hours.
While this is a fast-moving system, up to 4 to 8 inches of snow are expected by midnight. Snow will taper to snow showers overnight with another 2 to 4 inches accumulation possible for a total of around 8 to 12 inches for most locations in The County. This will have a significant impact on travel, so anyone needing to venture out should take appropriate safety precautions for winter travel.
An upper-level trough will follow the surface low tomorrow with snow showers expected over the course of the day with another inch of so of accumulation possible. High pressure will build in with another surge of cold air Thursday night with partly cloudy skies across the region with wind chill values in the low 10s tomorrow night. Partly sunny skies will continue Friday with daytime highs only in the upper 20s to low 30s and overnight lows in the lower 10s.
Today and tonight
Cloudy with a 100 percent chance for snow by the afternoon. Precipitation totals in the 1/2- to 3/4-inch range with around 4 to 8 inches snow accumulation. High around 28 degrees. East wind 4-8 mph.
Tonight, cloudy with a 100 percent chance for snow. Precipitation totals in the 1/10th to 1/4-inch range with 2 to 4 inches additional snowfall possible. Low near 24 degrees. North wind near 5 mph becoming northwest overnight.
Thursday, Nov. 17
Cloudy with a 50 percent chance for snow showers. Precipitation totals between 1/10th and 9/10ths of an inch with around 1-inch additional snowfall possible. High near 34 degrees. West wind 6-8 mph.
Thursday night, partly cloudy with a 30 percent chance for snow showers. Little additional precipitation expected. Low near 18 degrees. West wind 4-5 mph.
Friday, Nov. 18
Partly sunny with a high around 30 degrees. West wind 5-10 mph becoming southwest in the afternoon 2-5 mph.
Friday night, partly cloudy with a low near 12 degrees. Southwest wind 0-7 mph.
Days 4 to 7: Saturday-Tuesday
An upper-level trough will remain over the region for much of the period with partly sunny skies in the daytime. A weakening frontal boundary will approach Sunday with increased cloudiness and a chance for snow showers that continue into Monday morning. A new surge of polar air will overspread the region early next week on a brisk west wind.
Saturday, Nov. 19
Partly sunny with a high around 32 degrees. Southwest wind 0-7 mph.
Saturday night, partly cloudy and cold with a low near 15 degrees. 20 percent chance for snow showers after midnight. South wind 0-7 mph.
Sunday, Nov. 20
Partly sunny with a 30 percent chance for snow showers, mainly in the afternoon. High near 32 degrees. Southwest wind 0-7 mph.
Sunday night, partly cloudy with a low near 15 degrees. 30 percent chance for snow showers. West wind 0-7 mph.
Monday, Nov. 21
Partly sunny with a high near 30 degrees. West wind 8-14 mph.
Monday night, partly cloudy with a low near 12 degrees. West wind 0-7 mph.
Tuesday, Nov. 22
Partly sunny with a high around 30 degrees. West wind 8-14 mph.
Tuesday night, partly cloudy and cold with a low near 12 degrees. West wind 0-7 mph.
8- to 14-day trends: Wednesday, Nov. 23-Tuesday, Nov. 29
Below normal temperatures / Near normal precipitation
Note: Computer model precision diminishes the further into the week the forecast projects. Check the Fiddlehead Focus for weather updates with more current information.
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.