Significant Weather Blog: Friday, December 12, 2025 5 PM

Light Accumulation of Snow Likely for Southeast New England this Sunday A rather fast-moving storm will pass south of New England Sunday and bring a period of light snow or flurries to southern New England.  This event is expected to fall well below normal blog criteria but is likely to yield the first accumulating snowfall,… Read More »

Significant Weather Blog: Thursday, December 11, 2025 6 PM

First Accumulating Snow of the Season Possible for Southeast New England on Sunday A storm passing offshore on Sunday is expected to be rather fast moving with intensification taking place downstream from southern New England.  Nevertheless, it looks as though the system may pass close enough with a fairly vigorous upper trough to provide enough… Read More »

Join us for a NEW webinar:”Winter Outlook 2025-2026″

Featuring Kevin Lemanowicz, Chief Meteorologist Boston 25 and Judah Cohen, Forecasting and Principal Scientist at the Janus Group. Come with questions and leave with predictions! Kevin and Judah are teaming up to share their individual “Winter Outlook for 2025-2026” predications.  Please join us online Wednesday, December 17, 2025 at 1:00 PM (Eastern Time) as they discuss… Read More »

Seeking STEM Partners: Summer 2026 Pilot Middle School Program

Blue Hill Observatory is seeking partners from various STEM careers representing weather, climate and environmental industries to support a summer career exploration and research program for 20-25 middle school students. Over 6 days, students work with STEM experts, investigate real-world challenges, and present solution-oriented projects. As a partner, you will gain youth perspectives on problems… Read More »

Significant Weather Outlook: Monday, December 8, 2025 10 AM

Significant Weather Outlook for the Coming Week  There is no identifiable significant weather threat foreseeable at this time for this first week in December. The large-scale weather pattern features fairly zonal west to east flow with a broad large-scale upper trough anchored over eastern North America.  Several pulses of energy embedded in that upper flow… Read More »

Fall 2025 Summary – Warmer and Sunnier Than Average

Blue Hill Observatory Fall (Sep-Nov) 2025 Summary:  Fall 2025 temperature was above average, precipitation was near average, and there was more sunshine than expected. The approximated 24-hour mean temperature for fall of 53.0 deg F was 1.9 degrees warmer than the 1891-2020 130-year average for the season, and it was 0.5 degrees warmer than the… Read More »

November 2025 Summary – Cooler and Drier Than Average

Blue Hill Observatory November 2025 Summary:  November 2025 was cooler than normal with less precipitation and more sunshine than average. The approximated 24-hour mean temperature for the month of 41.2 deg F was 0.5 degrees warmer than the 1891-2020 130-year average for November, and it was 0.9 degrees cooler than the 1991-2020 30-year average. The… Read More »

Significant Weather Blog: Wednesday, December 3, 2025 9 AM

Storm Wrap Up Looks like generally 4 to 7 inches of snow fell across north central Massachusetts and western Massachusetts yesterday (December 2).  The amounts tapered down to generally 1 to 3 inches along the I-495 corridor (north of the Mass Pike) and along the Mass Pike (I-90) corridor west of I-495.  Little or no… Read More »

Significant Weather Blog: Tuesday, December 2, 2025 9 AM

Storm Today and Tonight: Heavy Snow Expected Across Higher Elevations of Interior Southern New England The forecast remains much the same.  A surface low pressure center with plentiful moisture will pass about 50 or 60 miles southeast of Nantucket tonight.  Due to warm sea surface temperatures (in the upper 40s) and the lack of blocking… Read More »

Significant Weather Blog: Monday, December 1, 2025 4 PM

Winter Storm for Much of Interior Southern New England Tuesday and Tuesday Night First measurable snowfall looks likely for much of interior southern New England Tuesday and Tuesday night.  It still looks like mostly rain along coastal areas and heavy snow over the interior higher terrain.  The majority of the overnight model runs were colder,… Read More »