Chelmsford has some of Massachusetts’s warmest summers
Chelmsford has chilly, snowy winters and warm summers. A typical July afternoon reaches 84°, a January night drops to 16°, and about 59 inches of snow falls in a normal winter. In November, a normal day reaches 51° and a normal night drops to 31°.
Getting the latest forecast from the National Weather Service…
What stands out about Chelmsford’s weather
Read from 30 years of NOAA records. Each one opens the full story on the Climate page.
Where today sits in Chelmsford’s year
Typical highs and lows month by month, from 30 years of NOAA records.
Weather talk
Road reports, first frosts and storm memories from neighbors in Chelmsford.
Your answer becomes a post in Town Square.
Forecast, conditions and alerts: National Weather Service. Climate: NOAA NCEI U.S. Climate Normals, 1991–2020 and 1901–2000. Temperatures and rainfall come from NOAA’s gridded normals for Chelmsford itself (about a 3-mile square). Snow, frost dates and day counts: the NOAA station at Bedford, MA (9 mi, snow) and Lowell, MA (3 mi, frost, heat and degree days). Sunrise and sunset are calculated from the town’s position. Normals are 30-year averages, not a forecast.