Apex Weather

St. John Valley weather for Nov. 20-26, 2019

Short-Term Outlook
An upper-trough and low will move east into the Atlantic south of the region today with overcast skies this morning becoming partly sunny around midday.

Partly sunny/clear skies persist through the early afternoon Thursday as the upper trough moves east of the region as low-level moisture remains in place across the Valley. Clouds increase Thursday night as a warm front ahead of a low pressure tracking east from the Great Lakes lifts across the Valley followed by a cold front trailing from the low as it tracks north of the Valley Friday. Snow is expected to overspread the area in the pre-dawn hours Friday mixing with sleet and some rain by the afternoon as temperatures rise above freezing. Snow/snow showers continue Friday night into Saturday morning before tapering off over the course of the day Saturday with a couple of inches of accumulation possible for the SJV.

Wednesday, November 20
Becoming partly sunny with a high around 35°F. North winds 0 to 5 mph producing wind chill values in the mid-10s at times. Tonight, partly clear with a low near 22°F. North/northwest winds near 5 mph with wind chill values in the mid-10s.

Thursday, November 21
Partly sunny with a high near 33°F. North/northwest winds 0 to 5 mph. Thursday night, increasing clouds with a 50% chance for a wintry mix developing after midnight. Precipitation totals less than 1/10 inch. Low in the lower 20s with south 0 to 5 mph.

Friday, November 22
Cloudy with a 70% chance for snow, mixing with sleet and rain in the afternoon. Liquid equivalent precipitation totals between 1/10 and 1/4 inch. High in the middle 30s with southeast winds shifting to the west/southwest in the 5 to 10 mph range. Friday night, cloudy with a 50% chance for snow/snow showers with a low in the middle 20s. West winds in the 10 to 15 mph range.

Further Ahead
High pressure builds in later Saturday on breezy west winds with mostly cloudy skies as low-level moisture remains across the region. Sunday remains partly sunny/mostly cloudy as an upper-disturbance tracks across the region with a chance for afternoon/evening snow with snow showers lingering through the overnight period. Monday continues partly sunny as a low pressure area tracks across the Gulf of Maine. Tuesday remains partly sunny as low-level moisture remains across the region ahead of a low-pressure system tracking into Canada across the Great Lakes.

Medium-Range Highs/Lows
Sat. Nov. 23: low 30s / mid-10s
Sun. Nov. 24: low 30s / upper 10s
Mon. Nov. 25: low 30s / low 20s
Tue. Nov. 26: mid-30s / mid-20s

Longer-range Trends
Wed. Nov. 27 – Tue. Dec. 3: above normal temperatures and slightly above 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.

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