Significant Weather Outlook: Monday, May 4, 2026 9 AM

Significant Weather Weekly Outlook

Hazardous weather does not appear likely this week.  This message provides a broadbrush look of what weather to anticipate this week.

Dry and warmer weather is expected through Tuesday across southern New England except for a chance of a late afternoon/evening thunderstorm on Tuesday in far northwest MA.   Also, the combination of breezy conditions and low relative humidities will result in elevated fire weather potential today and possibly again Tuesday.

An approaching cold front will likely trigger showers and perhaps a few thunderstorms during Wednesday afternoon into Wednesday night.

The front will likely stall south of New England Wednesday night, but how far south remains in question.  A wave of low pressure moving along the front may trigger a period of rain on Thursday across at least portions of southern New England.  The trend of the model guidance has been to suppress this wave far enough south that most of the rain on Thursday or Thursday night may be confined to the south coast region.  This remains a fairly low confidence forecast.

Cooler weather follows for the end of the work week into the weekend with a risk of scattered showers each day.  Depending upon extent of cloud cover, overnight lows may be in the 30s for some interior locations.  In spite of the cool air mass, daytime highs will likely still reach at least into the upper 50s to around 60 due to the strong May sun.

Next Message

The next message will likely be the regularly scheduled significant weather weekly outlook to be issued Monday May 11.  Those planning outdoor activities this week and next weekend should monitor the latest forecasts from the National Weather Service.

About this Blog and Disclaimer

The National Weather Service monitors the weather 24/7 and updates forecasts, watches, and warnings as necessary.  For most of southern New England, refer to your local Weather Forecast Office for the latest forecast/warning information at weather.gov/box.  For information from other Weather Forecast Offices, go to weather.gov and click on the location of interest on the map.

The frequency of this blog will depend upon the nature of the weather threat and availability of the author.  Thus, for the latest information on weather forecasts and warnings, refer to the National Weather Service, which monitors and forecasts the weather 24/7.

Blue Hill Observatory and Science Center (BHOSC)

The BHOSC maintains a continuous daily observation record that dates from February 1, 1885 without interruption and provides educational information on weather and climate to area students and the community at large.  Your support of BHOSC is much appreciated and enables this nonprofit organization to maintain the long-term climate record at the Blue Hill Observatory (longest continuous record in North America) and provide valuable educational resources on weather and climate via outreach to schools, site visits/tours, webinars, and conferences.  For more information on the Blue Hill Observatory and Science Center, explore bluehill.org.

Message issued May 4, 2026 by:
Bob Thompson
Retired National Weather Service Meteorologist
Blue Hill Observatory and Science Center Board member