St. John Valley weather for July 31-Aug. 6, 2024

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

3-Day Outlook: Wednesday, July 31 – Friday, Aug. 2

For today, low pressure and an associated cold front approaches Maine from the southwest with mostly cloudy skies along with chances of afternoon/evening showers and isolated thunderstorms for the SJV. Any thunderstorms will be capable of producing locally heavy rainfall. Showers are likely tonight under cloudy skies.

Mostly cloudy skies with a chance of showers and isolated afternoon thunderstorms are expected Thursday followed by clearing skies Thursday night as the front moves east of the region. High pressure then builds across the Saint John Valley Friday with a slight chance for an afternoon shower or two. Daytime highs in the 80s with overnight lows in the 60s and humid conditions are expected for the three-day period.

Daily Summary 

Today: Mostly cloudy. Patchy fog this morning. Isolated showers this morning, then numerous showers and scattered thunderstorms this afternoon. Thunderstorms may produce heavy rainfall this afternoon. Highs in the lower 80s. South winds around 5 mph. Chance of rain 70 percent.

Tonight: Showers. Scattered thunderstorms, mainly in the evening. Patchy fog. Thunderstorms may produce heavy rainfall. lows in the mid 60s. South winds around 5 mph in the evening, becoming light and variable. Chance of rain 90 percent.

Thursday: Patchy fog in the morning. Mostly cloudy with a chance of showers. A slight chance of thunderstorms in the afternoon. Highs in the lower 80s. Northwest winds around 5 mph. Chance of rain 50 percent.

Thursday Night: Partly cloudy with a chance of showers in the evening, then clear after midnight. Patchy fog after midnight. Lows in the lower 60s. Northwest winds around 5 mph. Chance of rain 40 percent.

Friday: Sunny in the morning, then partly sunny with a slight chance of showers in the afternoon. Highs in the lower 80s. West winds around 5 mph. Chance of rain 20 percent.

Friday Night: Mostly clear with a slight chance of showers in the evening, then partly cloudy after midnight. Lows in the mid-60s. Chance of rain 20 percent.

4-7 Day Outlook: Saturday, Aug. 3 – Tuesday, Aug. 6

Low pressure tracks towards the region from the southwest Saturday into Sunday with a chance of showers and scattered thunderstorms both days. A cold front moves through Sunday into Monday with cooler, drier high pressure building in Monday producing cooler temperatures and mostly clear to partly cloudy skies that continue into Tuesday.

Daily Summary

Saturday: Partly sunny in the morning, then becoming mostly cloudy. A chance of showers. Highs in the mid-80s. Chance of rain 50 percent.

Saturday Night: Mostly cloudy with a chance of showers. Patchy fog after midnight. Lows in the mid-60s. Chance of rain 50 percent.

Sunday: Mostly cloudy. A chance of showers in the morning, then showers likely with a chance of thunderstorms in the afternoon. Highs in the upper 70s. Chance of rain 60 percent.

Sunday Night: Mostly cloudy with showers likely with a chance of thunderstorms in the evening, then partly cloudy with a chance of showers after midnight. Lows in the upper 50s. Chance of rain 60 percent.

Monday: Partly sunny. A chance of showers in the morning. Highs in the mid-70s. Chance of rain 30 percent.

Monday Night: Partly cloudy in the evening, then becoming mostly clear. Lows in the lower 50s.

Tuesday: Mostly sunny in the morning, then becoming partly sunny. Highs in the lower 70s.

8-14 Day Regional Climate Trends: Wednesday, Aug. 7 – Tuesday, Aug. 13 

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, ME at 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.