Apex Weather

St. John Valley weather for May 20-26, 2020

Short-Term Outlook: Wednesday – Friday
High pressure will continue to bring mild spring weather to the region today and tonight. Thursday will continue to see high pressure in control of the Valley’s weather.

Interaction between high pressure south of the region and strong low pressure well north in Canada will help produce gusty west winds across the area. Low relative humidity levels along with gusty winds have led the Storm Prediction Center to place most of Maine, including the Saint John Valley, at elevated fire weather risk Thursday. Winds subside Thursday night under partly cloudy skies that develop as a cold front slides towards the Valley from the northwest. Skies become partly sunny Friday morning as the front moves through with only a slight chance for precipitation. Clouds will diminish Friday afternoon with mostly clear and cooler conditions Friday night behind the front.

Today and Tonight

  • Clear with a high in the middle 70s. West/southwest winds 0 to 5 mph. 
  • Tonight, mostly clear with a low in the middle 40s. Southwest winds winds 0 to 5 mph early become west increasing to 5 to 10 mph after midnight.

Thursday, May 21

  • Mostly clear with a high in the upper 70s to low 80s. West winds 10 to 15 mph gusting around 25 to 30 mph. Elevated fire weather danger due to low humidity levels and fine, dry fuel across the region.
  • Thursday night, partly cloudy with a slight chance for showers. Low in the mid-50s with west winds 5 to 10 mph.

Friday, May 22

  • Partly sunny early then becoming partly cloudy in the afternoon with a high in the upper 60s to low 70s. Northwest winds 10 to 15 mph.
  • Friday night, mostly clear with a low in the upper 30s. Light north winds.

Further Ahead: Saturday – Tuesday
High pressure near the Hudson Bay brings mostly clear skies Saturday with cooler temperatures. High-pressure moves southeast across the region Sunday and Monday with warmer temperatures developing. Partly sunny skies are expected to develop by Tuesday afternoon with a chance for showers across the region as a weakening cold front approaches from the west. 

Saturday, May 23

  • Mostly clear with a high in the lower 60s. Light north winds. 
  • Saturday night, mostly clear with a low in the middle 30s. Light east winds.

Sunday, May 24

  • Mostly clear with a high in the mid-70s with light south winds. 
  • Sunday night, partly cloudy with a 10 percent chance for showers. Low in the mid-40s with light south winds.

Monday, May 25 / Memorial Day

  • Partly cloudy with a 10 percent chance for showers. High in the mid-70s. Light south winds. 
  • Monday night, partly cloudy with a 20 percent chance for showers after midnight. Low in the upper-40s. Light south winds.

Tuesday, May 26

  • Partly cloudy in the morning then partly sunny in the afternoon with a 30 percent chance for showers. High in the middle 70s. Southwest winds 10 to 15 mph. 
  • Tuesday night, considerable cloudiness with a 40 percent chance for showers. Low in the mid-50s. Southwest winds 5 to 10 mph.

Regional Long-Range Trends: Wed. May 27 – Tue. June 2
Above normal temperatures and 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.

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