St. John Valley weather, June 21-27, 2023

Joseph E. Becker, Special to The County
11 months ago

3-Day Outlook: Wednesday, June 21-Friday, June 23

High pressure spreads across the region today with sunny skies and a high in the lower 80s for the start of astronomical summer this morning. Tonight, mostly clear skies with a low in the mid-50s are expected. Light west wind in the morning becomes southwest in the afternoon.

High pressure moves to the southeast Thursday, which remains mostly sunny, hot, and increasingly humid with a high climbing into the low 90s with a southwest wind. Thursday night, mostly clear skies with temperatures in the  low 60s can be expected. Light southwest winds are expected.

High pressure remains in control of the region’s weather Friday. Fort Kent and vicinity once again look to reach the low 90s for daytime highs with sunny skies and muggy conditions as dew points climb into the upper 50s to low 60s. Southwest winds in the 5-10 mph range are expected. Friday night, skies become with a low in the low-to-middle 60s. Southwest wind in the 0-7 mph range expected.

Daily Summary

Today: Sunny, with a high near 82. West wind 3 to 5 mph.

Tonight: Mostly clear, with a low around 55. Southwest wind 3 to 5 mph.

Thursday: Sunny and hot, with a high near 90. West wind around 7 mph.

Thursday Night: Mostly clear, with a low around 60. Southwest wind around 6 mph.

Friday: Sunny and hot, with a high near 93. Southwest wind 6 to 8 mph.

Friday Night: Partly cloudy, with a low around 63. Southwest wind around 6 mph.

4- to 7-Day Outlook: Saturday, June 24-Tuesday, June 27 

A cold front approaches from Quebec Saturday with mostly cloudy skies and a chance for afternoon showers and thunderstorms. Due to plentiful subtropical moisture being channeled to the region aloft around the Bermuda high in the Atlantic, heavy downpours may be possible with some storms. Daytime highs top out in the  mid-80s with muggy dew points in the mid-60s. Saturday night, mostly cloudy skies with showers and thunderstorms continuing. Temperatures fall into the mid-60s with continued humid conditions.

The cold front slowly moves towards the coast Sunday with a chance for scattered showers over the course of the day. Highs are expected in the low 80s with humid conditions. Sunday night, partly cloudy skies develop with a chance for scattered showers continuing. Overnight lows are expected in the low 60s with continued muggy conditions.

Mostly cloudy skies are expected Monday as a stalled frontal boundary remains over central/southern Maine. Showers are expected, especially in the afternoon, along with a slight chance for thunderstorms. Showers are expected overnight into Tuesday under mostly cloudy skies. Daytime highs reach the mid-70s with overnight lows in the lower 60s.

Tuesday remains mostly cloudy with a chance for showers, particularly in the afternoon, along with isolated thunderstorms. Cloudy skies with showers likely Tuesday night as a low pressure area approaches from the Great Lakes. A high in the upper 70s with an overnight low in the lower 60s are expected.

Daily Summary

Saturday: A chance of showers before noon, then a chance of showers and thunderstorms between noon and 3 p.m., then showers likely and possibly a thunderstorm after 3 p.m. Mostly cloudy, with a high near 84. Southwest wind 6 to 8 mph. Chance of precipitation is 60 percent.

Saturday Night:
Showers likely and possibly a thunderstorm before 8 p.m., then a chance of showers and thunderstorms between 8 p.m. and 9 p.m., then a chance of showers after 9 p.m. Patchy fog after midnight. Otherwise, mostly cloudy, with a low around 64. Chance of precipitation is 60 percent.

Sunday:
A chance of showers. Partly sunny, with a high near 83. Chance of precipitation is 50 percent.

Sunday Night:
A chance of showers. Patchy fog after midnight. Otherwise, mostly cloudy, with a low around 60. Chance of precipitation is 40 percent.

Monday:
Showers and thunderstorms likely. Mostly cloudy, with a high near 74. Chance of precipitation is 60 percent.

Monday Night:
Showers likely. Patchy fog. Otherwise, mostly cloudy, with a low around 62. Chance of precipitation is 60 percent.

Tuesday:
Showers and thunderstorms likely. Mostly cloudy, with a high near 78. Chance of precipitation is 60 percent.
8- to 14-Day Trends: Wednesday, June 28-Tuesday, July 4
 

Above normal temperatures / 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.