St. John Valley weather for Dec. 8-14, 2021
Apex Wx three-day outlook: Wednesday – Friday
An upper-level trough will track east towards the region today with clouds overspreading the Valley. A surface low is expected to develop off Cape Hatteras and track towards Nova Scotia over the course of the day. Snow will spread to the northwest of the system, but it will remain far enough offshore that little impact will occur across northern Maine aside from some light snow tonight.
Any precipitation will end Thursday as a ridge of high pressure builds across the SJV. Partly cloudy skies are expected by the afternoon continuing into the evening hours. Cold overnight temperatures will be moderated as clouds move in overnight ahead of a warm front moving towards the region, which is expected to produce some light snow Friday.
Low pressure will track east from the Great Lakes later Friday with snow expected overnight into Saturday morning.
Today and Tonight
Partly sunny in the morning then becoming mostly cloudy with a 10 percent chance for snow in the afternoon. High near 13 degrees. Northwest winds at 2-5 mph become north-northeast in the afternoon near 3 mph.
Tonight, mostly cloudy with a 30 percent chance for snow. Precipitation less than 0.10-inch with little accumulation, if any, expected. Low near 8 degrees with north-northeast winds at 4-5 mph.
Thursday, Dec. 9
Decreasing clouds in the morning then becoming partly cloudy to mostly clear in the afternoon. High near 17 degrees with north/northwest winds 8-9 mph.
Thursday night, partly cloudy and cold with a 5 percent chance for snow showers. Low around -2 degrees with winds becoming south/southeast winds 3-4 mph.
Friday, Dec. 10
Mostly cloudy in the morning then becoming cloudy in the afternoon with a 50 percent chance for snow. Precipitation totals less than 0.10-inch with little accumulation expected. High around 22 degrees. South winds 8-9 mph.
Friday night, mostly cloudy with an 80 percent chance for snow. Low near 19 degrees. Southeast winds 0-7 mph.
Apex Wx four- to seven-day outlook: Saturday – Tuesday
Another low pressure area will track across the Great Lakes and into Canada well to our northwest. Precipitation continues as snow Saturday morning before changing to rain Saturday afternoon/evening before ending as a rain/snow shower mix Sunday morning. Partly cloudy to partly sunny skies are expected Sunday night through Tuesday as high pressure builds into the Valley with mostly dry conditions.
Saturday, Dec. 11
Mostly cloudy in the morning with a chance for snow showers in the morning then cloudy with rain likely in the afternoon. Chance for precipitation 90 percent. High around 42 degrees. Southeast winds 0-7 mph.
Saturday night, cloudy with an 80 percent chance for rain and rain showers. Low near 28 degrees. Southwest winds 8-14 mph.
Sunday, Dec. 12
Mostly cloudy with a chance for rain showers in the morning mixing with snow showers before ending by the afternoon. Chance for precipitation 10 percent. High around 36 degrees with west winds 15-22 mph.
Sunday night, partly cloudy with a 5 percent chance for precipitation. Low near 19 degrees with west winds 8-14 mph.
Monday, Dec. 13
Partly sunny with a 10 percent chance for precipitation. High around 34 degrees. West winds 8-14 mph.
Monday night, partly cloudy with a 5 percent chance for precipitation. Low near 20 degrees. West winds 8-14 mph.
Tuesday, Dec. 14
Partly cloudy with a high near 31 degrees. Northwest winds 8-14 mph.
Tuesday night, partly cloudy with a low near 19 degrees. 5 percent chance for precipitation. West winds 0-7 mph.
Climate Prediction Center eight- to 14-day trends
Wednesday, Dec. 15 – Tuesday, Dec. 21
Above 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.