Significant Weather Blog: Thursday, October 9, 2025 6 PM

WIDESPREAD FROST/FREEZE TONIGHT RISK OF COASTAL FLOODING AND BEACH EROSION ALONG PORTIONS OF THE MASSACHUSETTS COAST SUNDAY AND ESPECIALLY MONDAY Freeze/Frost Tonight Temperatures will drop to near or a little below freezing late tonight and early Friday morning for most of interior southern New England.  Closer to the coast, there’s a high risk of frost… Read More »

Significant Weather Blog: Wednesday, October 8, 2025 6 PM

FREEZING TEMPERATURES LIKELY ACROSS MOST OF INTERIOR SOUTHERN NEW ENGLAND LATE THURSDAY NIGHT AND EARLY FRIDAY MORNING RISK OF COASTAL FLOODING AND BEACH EROSION ALONG PORTIONS OF THE MASSACHUSETTS COAST SUNDAY AND MONDAY Freezing Temperatures Thursday Night After a stretch of typical mid to late summer temperatures, interior southern New England will likely experience the… Read More »

Significant Weather Outlook: Monday, October 6, 2025 10 AM

Weekly Significant Weather Discussion A significant weather blog may be started late this coming week due to a possible slow moving coastal storm that may impact southern New England late this coming weekend.  As a consequence of the superimposed gravitational pull from both the Moon (including its distance from the Earth) and the Sun, astronomical… Read More »

September 2025 Summary – Warmer and Sunnier Than Average

Blue Hill Observatory September 2025 Summary:  September 2025 was warmer than average with near normal precipitation and much more sunshine than average. The approximated 24-hour mean temperature for the month of 64.3 deg F was 2.8 degrees warmer than the 1891-2020 130-year average for September, and it was 1.2 degrees warmer than the 1991-2020 30-year… Read More »

Weather Blog: September 28, 2025 4 PM (Tropics)

REDUCED THREAT OF MAJOR IMPACTS FROM IMELDA FOR THE U.S.  Tropical Depression Nine has strengthened into a tropical storm, named Imelda.  It now looks as though Imelda will make a sharp right turn before getting all that close to South Carolina and then head into the open ocean.  Meanwhile, Hurricane Humberto remains a major hurricane… Read More »

Weather Blog: September 27 2025 12 PM (Tropics)

RISK OF FLOODING RAINS OVER PORTIONS OF THE SOUTHEAST U.S. A developing tropical cyclone over the Bahamas will likely move close enough to the South Carolina coast to produce river flooding and small stream and urban flash flooding across portions of South Carolina, North Carolina, Georgia, and possibly southern Virginia.  Will discuss that further but… Read More »

Weather Blog: September 26 2025 4 PM (Tropics)

WHAT MIGHT BECOME IMELDA COULD POSE A RISK TO THE SOUTHEAST UNITED STATES  A tropical wave (currently identified as Invest 94L) approaching the southeast Bahamas might develop into a tropical storm or even hurricane and affect portions of the Southeast United States, especially South Carolina and North Carolina, early next week.  If that should happen,… Read More »

Weather Blog: September 24, 2025 6 PM (Tropics)

TROPICAL WEATHER ACTIVITY MAY APPROACH THE WATERS OFF THE U.S. EAST COAST NEXT WEEK Tropical Storm Humberto A couple of tropical systems are being watched in the southwest Atlantic.  One or both may track uncomfortably close to the U.S. east coast next week.  One of these systems was named Tropical Storm Humberto this afternoon.  The… Read More »

Summer 2025 Summary – Warmer and Drier Than Average

Blue Hill Observatory Summer (Jun-Aug) 2025 Summary:  Summer 2025 temperature was much above average, and there was less precipitation and more sunshine than expected. The approximated 24-hour mean temperature for summer of 70.2 deg F was 2.7 degrees warmer than the 1891-2020 130-year average for the season, and it was 1.0 degrees warmer than the… Read More »

August 2025 Summary – Sunniest on Record

  Blue Hill Observatory August 2025 Summary:  August 2025 was cooler and drier than average with much above average sunshine. The approximated 24-hour mean temperature for the month of 68.5 deg F was 0.2 degrees warmer than the 1891-2020 130-year average for August, and it was 1.8 degrees cooler than the 1991-2020 30-year average. The… Read More »