St. John Valley weather for March 24-30, 2021
Partly cloudy skies Wednesday morning will become increasingly cloudy as the day progresses as southeast flow draws marine air over the region.
Low pressure tracks well northwest of the region Wednesday into Thursday pulling an occluded front across the region and triggering some shower activity after midnight into Thursday morning. Precipitation is expected to end by Thursday afternoon with mostly cloudy/partly sunny skies in the afternoon.
Meanwhile, developing low pressure over the Lower Mississippi Valley Thursday will track towards the Ohio Valley Thursday night then head towards New England Thursday night. Rain is expected to overspread the SJV after midnight and continue through the day Friday mixing with some sleet and snow as colder air is drawn into the region as the low tracks across southern Maine Friday night with a rain/snow mix expected for the Valley.
Wednesday, March 24
Partly cloudy in the morning then becoming mostly cloudy in the afternoon with a 10 percent chance for precipitation. High around 57 degrees with south/southeast winds at 5 to 10 mph.
Wednesday night, partly cloudy with a 50 percent chance for rain showers after midnight. Precipitation totals between 0.01 and 0.09-inch. Low around 38 degrees with south winds around 5 mph.
Thursday, March 25
Cloudy to mostly cloudy with a 50 percent chance for rain showers, mainly in the morning. Precipitation totals between 0.01 and 0.09-inch. High near 58 degrees with south/southwest winds 5 to 10 mph.
Thursday night, mostly cloudy with a 30 percent chance for rain, mainly after midnight. Precipitation totals around 0.01-inch. Low around 38 degrees with southwest winds near 5 mph.
Friday, March 26
Cloudy with a 90 percent chance for rain mixing with sleet and snow in the afternoon. Precipitation totals between 0.50 to 0.75-inch. High around 44 degrees with north/northeast in the 5 to 10 mph range.
Friday night, cloudy with a 90 percent chance for rain mixing with snow. Low around 24 degrees with north/northeast winds 10 to 15 mph.
Medium Range Outlook: Saturday- Tuesday
Snow is likely Saturday morning followed by a rain/snow mix Saturday afternoon. Precipitation tapers off Saturday evening with decreased cloudiness Saturday night into Sunday morning.
Another low pressure system moving east from the Great Lakes produces increasing cloudiness by Sunday afternoon with a rain/snow mix expected to overspread the Valley once more.
Rain/snow continues Sunday night with all snow across the area Monday morning. Snow mixes with rain in the afternoon then tapers to snow showers Monday night. Tuesday becomes partly cloudy as high pressure builds east from the Great Lakes.
Saturday, March 27
Mostly cloudy with a 50 percent chance for morning snow tapering to snow and rain showers in the afternoon. High near 36 degrees with north winds 5 to 10 mph.
Saturday night, partly cloudy with a 10 percent chance for rain/snow showers ending in the evening. Low near 19 degrees with southeast winds 5 to 10 mph.
Sunday, March 28
Partly sunny in the morning then becoming mostly cloudy in the afternoon with a 50 percent chance for rain and snow. High around 37 degrees with southeast winds 10 to 15 mph.
Sunday night, mostly cloudy early then cloudy with a 70 percent chance for rain and snow. Low around 28 degrees with east/southeast winds 10 to 15 mph in the evening becoming east/northeast 5 to 10 mph after midnight.
Monday, March 29
Mostly cloudy with a 50 percent chance for snow in the morning mixing with rain in the afternoon. High around 36 degrees with northwest winds 15 to 20 mph.
Monday night, partly cloudy with a 30 percent chance for snow showers. Low around 20 degrees with northwest winds 10 to 15 mph.
Tuesday, March 30
Partly cloudy with a 10 percent chance for morning snow showers. High near 40 degrees with northwest winds 10 to 15 mph.
Tuesday night, partly cloudy with a 10 percent chance for snow showers. Low near 20 degrees with west/northwest winds around 5 mph.
Long-Range Trends: Wed. Mar. 31 – Tue. Apr. 6
Above normal temperatures / 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.