Marlborough, MA Weather & Climate Normals
Marlborough's real weather, in one number
Marlborough, MA scores 49/100 on this site's reading of NOAA's own 30-year normals: strongly seasonal. Comfortable weather is limited to a shorter window; summers, winters, or precipitation swing wide. 5 of the year's 12 months average between 55 and 75°F, the range this site counts as mild.
Marlborough's hottest and coldest months
Marlborough's hottest month is Jul, averaging 74°F; its coldest is Jan, averaging 26°F, a 47.6°F swing across the year, one of the widest gaps in this dataset.
Rain and snow in Marlborough
Over a typical year, Marlborough sees about 49.7in of precipitation a year across roughly 129 days with measurable rain or snow. That station has no snowfall reading, so none is shown rather than assumed.
Where Marlborough ranks
Marlborough ranks 2069 of 4876 US cities in this dataset for comfort score, and 18 of 58 within MA. About 42,169 people live there.
If you need tomorrow's forecast, not the 30-year average
Everything above is a 30-year average from MAYNARD 2, MA US, 7.7 miles from Marlborough, not a prediction for any specific day.
More on how this is worked out
Why some cities show no snow or rain figure · What a 30-year climate normal actually is