St. John Valley weather for July 26-Aug. 1, 2023

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

3-Day Outlook: Wednesday, July 26 – Friday, July 28

Mostly sunny skies are found across the Valley this morning. A weak trough moving across the region may produce some cloudiness and a slight chance for a passing shower in some locations. Tonight, a cold front approaches from the west with scattered showers possible overnight, though rainfall amounts of less than one-tenth an inch are presently expected. Daytime highs reach the low 80s with lows in the mid-60s tonight.

Thursday, the cold front approaches and moves across the region with mostly cloudy skies and breezy west/southwest winds. There is a marginal threat for severe thunderstorms on Thursday. Storms may produce small hail, gusty winds, and locally heavy rainfall Thursday into Thursday night. Thursday night, mostly cloudy skies with a chance for showers tapering off before midnight. Partly cloudy skies develop overnight with some patchy fog possible. Thursday’s high is expected mid-80s with an overnight low in the low 60s.

Friday, partly sunny skies in the morning become mostly cloudy in the afternoon with a chance of showers as another cold front crosses the region.  Friday night, mostly cloudy skies with a chance for scattered showers and isolated thunderstorms are expected. Daytime highs are expected in the low 80s with overnight lows in the low 60s.

Daily Summary

Today: Isolated showers. Mostly sunny, with a high near 84. West wind around 8 mph. Chance of precipitation is 20 percent.

Tonight: Scattered showers, mainly after 2 a.m. Increasing clouds, with a low around 67. Southwest wind around 6 mph. Chance of precipitation is 30 percent.

Thursday: Scattered showers, then showers likely and possibly a thunderstorm after 2 p.m. Some of the storms could produce small hail and gusty winds. Mostly cloudy, with a high near 85. Heat index values as high as 88. West wind 8 to 13 mph, with gusts as high as 23 mph. Chance of precipitation is 60 percent. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

Thursday Night: A chance of showers, mainly before midnight. Patchy fog between 4 a.m. and 5 a.m. Otherwise, mostly cloudy, with a low around 63. West wind 5 to 7 mph. Chance of precipitation is 50 percent. New precipitation amounts of less than a tenth of an inch possible.

Friday: A chance of showers, with thunderstorms also possible after 5 p.m. Partly sunny, with a high near 85. West wind 6 to 8 mph. Chance of precipitation is 40 percent.

Friday Night: A chance of showers and thunderstorms. Mostly cloudy, with a low around 62. Southwest wind around 8 mph. Chance of precipitation is 40 percent.

4- to 7-day Outlook: Saturday, July 29 – Tuesday, Aug. 1 

The cold front slowly moves across the St. John Valley Saturday with scattered morning showers under partly sunny skies, and noticeably cooler, drier air will building in over the course of the day Saturday. Partly cloudy skies develop in the afternoon, though isolated showers remain possible into the evening. Saturday night, mostly clear skies with the possibility of a passing shower are expected. Saturday’s high will be in the lower 70s with an overnight low in the low 50s. 

High pressure builds in Sunday, though an upper trough will keep the possibility of afternoon showers and isolated thunderstorms across the Saint John Valley.  Sunday night will be partly cloudy with some isolated showers possible. Highs reach the low 70s with overnight temperatures in the low 50s.

Monday, mostly sunny to partly cloudy skies are expected with a chance for scattered afternoon showers as a cold front drops across the region. Partly cloudy skies are expected Monday night with a chance for isolated showers. Highs in the low 70s and lows in the upper 40s are expected.

Tuesday, partly cloudy skies with scattered afternoon showers and isolated thunderstorms are possible thanks to the lingering cold front over central/southern portions of Maine. Tuesday night, partly cloudy skies are anticipated with lows in the lower 50s.

Daily Summary
Saturday: A slight chance of showers. Partly sunny, with a high near 75. Northwest wind 9 to 11 mph, with gusts as high as 21 mph. Chance of precipitation is 20 percent.

Saturday Night: A slight chance of showers before 10 p.m. Mostly clear, with a low around 54. Chance of precipitation is 20 percent.

Sunday: A chance of showers, mainly after 5 p.m. Mostly sunny, with a high near 75. Chance of precipitation is 30 percent.

Sunday Night: A slight chance of showers before 10 p.m. Partly cloudy, with a low around 50. Chance of precipitation is 20 percent.

Monday: A chance of showers. Mostly sunny, with a high near 73. Chance of precipitation is 30 percent.

Monday Night: A slight chance of showers. Partly cloudy, with a low around 49. Chance of precipitation is 20 percent.

Tuesday: A chance of showers and thunderstorms. Mostly sunny, with a high near 73. Chance of precipitation is 30 percent.

Tuesday Night: Partly cloudy with a low around 52.

8- to 14-day Trends: Wednesday, Aug. 2 –  Tuesday, Aug. 8

Below normal temperatures / Above normal precipitation

Note: Computer model precision diminishes the further into the week the forecast projects. Check The County.me or the National Weather Service, Caribou for weather updates with more current information for the Saint John Valley.

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.