Weekly Significant Weather Outlook
Rain late yesterday (October 11) and last night totaled 1 to 2+ inches across southern New England with most of the heaviest totals across CT, RI, and MA south of the Mass Pike. This rain was the result of an extra tropical surface low pressure system that passed south of New England but enriched with moisture from the remnants of Isaias.
No major storms are anticipated to affect southern New England this week. Blustery conditions are anticipated for next weekend, however, as a strong upper trough moves through New England and southeast Canada. Behind a surface cold front passage, we may experience our coldest temperatures to date this fall season as we head into the coming weekend. In fact, flurries are possible across the Berkshires and northern Worcester Hills Friday night or Saturday, and high temperatures on Saturday may struggle to get above the 40s for much of southern New England along with a brisk NW wind.
Tropics
Hurricane Simon continues to move slowly northwest just off the Mexican west coast bringing damaging winds, dangerous surf, and heavy rain with areas of flash flooding (and even mud slides across steep terrain). Simon is expected to eventually come under the influence of an approaching upper trough from the northwest and turn toward the northeast. This should result in landfall along the Mexican west coast sometime during mid-week, although there remains above normal uncertainty in its track. Moisture from Simon may eventually work its way into a portion of the Southwest U.S. by the weekend. Global models suggest still another tropical cyclone may develop to the southwest of Mexico by the weekend.
Next Message
The next message will probably be the weekly significant weather outlook scheduled for Monday October 19.
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 October 12, 2026 by:
Bob Thompson
Retired National Weather Service Meteorologist
Blue Hill Observatory and Science Center Advisory Council member
