Apex Weather

St. John Valley weather for April 14-20, 2022

3-Day Outlook: Thursday-Saturday

An occluded front approaches today bringing a chance for rain by the afternoon with rain likely tonight into Friday morning as the occlusion moves across the SJV. Partly sunny skies are expected to develop Friday as the front moves east into the Maritimes. A chance for showers will continue Friday afternoon into the evening hours as an upper-level low to our northwest keeps unsettled conditions across the Valley.

The upper-level low will move eastwards Saturday with a surface low drawing a cold front across the region. Rain is likely Saturday morning with a chance for rain through the afternoon and evening. Behind the cold front, colder air will be drawn into the region with a rain/snow mix overnight changing to all snow by Sunday morning.

Today and Tonight 

Partly sunny in the morning with becoming cloudy in the afternoon. 90 percent chance for rain, especially in the afternoon. Precipitation totals between 1/10th and 1/4 inch. High around 48 degrees. Northeast wind this morning becoming southeast 3-5 mph this afternoon.

Tonight, cloudy with an 80 percent chance for rain. Rainfall totals in the 1/10th- to 1/4-inch range. Low near 38 degrees. Southeast wind becoming south 5-8 mph.

Friday, April 15

Mostly cloudy in the morning then becoming partly sunny in the afternoon with a 40 percent chance for showers. Precipitation totals between 1/100th and 9/100ths inch. High around 56 degrees. Southwest wind 3-5 mph.

Friday night, partly cloudy with a 60 percent chance for rain showers in the evening then rain likely after midnight. Rainfall totals in the 1/100th- to 9/100ths-inch range. Low near 35 degrees. South wind 5-10 mph.

Saturday, April 16

Cloudy with a 60 percent chance for rain. Rainfall totals in the 1/10th- to 1/4-inch range. High around 48 degrees. Southwest wind 5-10 mph.

Saturday night, cloudy with a 50 percent chance for rain in the evening then rain/snow overnight. Low near 32 degrees. Northwest wind 0-7 mph.
4- to 7-day outlook: Sunday-Wednesday

The upper-level low crosses the Valley Sunday with morning snow changing mixing with then changing to rain showers in the afternoon and evening. Precipitation changes back to snow showers before ending early Monday. 

High pressure builds in Monday morning with mostly sunny skies overspreading northern Maine in the afternoon. Mostly clear skies overnight give way to increasing clouds Tuesday morning.

Clouds increase Tuesday morning as an area of low pressure tracks towards southern Maine from the Middle Atlantic region. Another area of low pressure will approach from our west and phase with the Mid-Atlantic low and track into the Maritimes by Wednesday. Precipitation begins as rain/snow Tuesday morning then changes to all rain in the afternoon as temperatures warm. A rain/snow mix overnight changes to all snow Wednesday morning then back to rain in the afternoon as the low moves away from the region.

Sunday, April 17

Decreasing clouds in the morning then partly sunny in the afternoon with a 30 percent chance for morning rain/snow showers changing to rain showers in the afternoon. High around 45 degrees. Northwest wind 8-14 mph.

Sunday night, partly cloudy with a 30 percent chance for evening rain showers and overnight snow showers. Low near 30 degrees. Northwest wind 8-14 mph.

Monday, April 18

Partly cloudy in the morning then mostly sunny in the afternoon with a high around 48 degrees. Northwest wind 0-7 mph.

Monday night, partly cloudy with a 50 percent chance for rain and snow showers after midnight. Low near 30 degrees. East wind 0-7 mph.

Tuesday, April 19

Partly sunny in the morning then cloudy in the afternoon. 70 percent chance for morning rain and snow showers then rain in the afternoon. High around 41 degrees. Southeast wind 8-14 mph.

Tuesday night, mostly cloudy with a 70 percent chance for rain in the evening then rain/snow overnight. Low near 33 degrees. Northeast wind 8-14 mph.

Wednesday, April 20

Cloudy with a 70 percent chance for morning snow and afternoon rain tapering to rain showers. High around 45 degrees. Northwest wind 8-14 mph.

Wednesday night, partly cloudy with a 10 percent chance for snow showers mixing with rain showers in the evening. Low near 30 degrees. Northwest wind 0-7 mph.


8- to 14-day trends: Thursday, Apr. 21-Wednesday, Apr. 27

Near normal temperatures / Below 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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