Apex Weather

St. John Valley weather for Oct. 21-27, 2020

Short-Term Outlook: Wednesday – Friday

Low pressure will track to the northwest of the Valley today lifting a warm front across the region today then drawing a cold front across the area this evening. Showers are expected this afternoon continuing into the evening hours before tapering off overnight behind the front.

Partly cloudy skies will develop tonight and continue Thursday into Thursday night as high pressure moves across the region. Clouds thicken back up Friday as a low pressure tracks from the Great Lakes northwest of the Valley pulling a cold front across the region with early morning snow showers changing to rain showers by midday before tapering off as the front slows on its approach. Considerable cloudiness is expected Friday night with a chance for rain showers as the front slowly moves through the region.

Today & Tonight

Cloudy with a chance for showers in the morning becoming a steadier rain in the afternoon. Chance for precipitation 80 percent. Rainfall totals in the 0.25 to 0.50-inch range possible. High in the low 50s with south/southeast winds 5 to 10 mph. Winds gusts 15 to 22 mph possible. Wind chill values in the mid-20s to low 30s.

Overnight,partly cloudy with a 30 percent chance for showers tapering off around midnight. Precipitation totals around 0.01-inch. Low in the low 40s with west winds near 5 mph. Wind chill values in the upper 30s.

Thursday, October 22
Partly cloudy with a 5 percent chance for precipitation. High in the lower 50s with west/northwest winds 5 to 10 mph with gusts 15 to 20 mph. Wind chill values in the mid-to-upper 30s at times.

Thursday night, partly cloudy with a 30 percent chance for snow showers after midnight. Precipitation totals near 0.01-inch. Low in the lower 30s with north winds 0 to 5 mph.

Friday, October 23
Mostly cloudy with a 30 percent chance for morning snow showers changing to rain showers. Precipitation totals around 0.01-inch expected. High in the low 50s with south/southeast winds 8 to 12 mph.

Friday night, considerable cloudiness with 40 percent chance for rain showers. Low in the lower 40s with south winds 8 to 14 mph.

Medium-Range: Saturday – Tuesday

A cold front moves through Saturday with mostly cloudy skies and rain showers across the SJV. Showers taper off by early Sunday morning with mostly clear skies overspreading the region as high pressure centered north of the Great Lakes builds east into the region on breezy northwest winds. Another low pressure from the Great Lakes tracks towards the Valley Monday with morning snow changing to rain in the afternoon which continues overnight into Tuesday. Rain tapers to rain/snow showers Tuesday with some light snow accumulations possible.

Saturday, October 24

Mostly cloudy with a 60 percent chance for rain showers, especially in the afternoon. High in the lower 50s with northwest winds 8 to 14 mph.

Saturday night, partly cloudy with a 20 percent chance for rain showers. Low in the middle 20s with northwest winds 8 to 14 mph.

Sunday, October 25

Mostly clear with a high in the upper 30s to low 40s. Northwest winds 8 to 14 mph.

Sunday night, partly cloudy with a 30 percent chance for snow showers after midnight. Low in the lower 20s with east winds 0 to 7 mph.

Monday, October 26

Partly cloudy in the morning then mostly cloudy in the afternoon with a 60 percent chance for morning snow changing to rain in the afternoon. High in the upper 30s to low 40s with southeast winds 0 to 7 mph.

Monday night, mostly cloudy with a 60 percent chance for rain mixing with/changing to snow showers after midnight. Low in the low 30s with southwest winds 0 to 7 mph.

Tuesday, October 27

Mostly cloudy with a 40 percent chance for morning rain tapering to rain and snow showers. High in the low 40s with northwest winds 0 to 7 mph.

Tuesday night, partly-to-mostly cloudy with a 40 percent chance for rain/snow showers. Low in the upper 20s/low 30s with west/northwest winds 0 to 7 mph.

Regional Long-Range Trends: Wed. Oct. 28 – Tue. Nov. 3

Below normal temperatures and 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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