Moving from Montréal to Boston
A climate comparison of two homes: Quebec to Massachusetts. The dates below come from the nearest official weather station to each place.
Climate Match
Your growing season runs 68 days longer, 150 days becomes 218 days.
Montréal, QC to Boston, MA
The full comparison
| Measure | From | To | Change |
|---|---|---|---|
| Frost-free season | 150 days | 218 days | 68 days longer |
| Months below freezing | 4 months | 2 months | 2 fewer |
| Coldest month | -10C in January | -1C in January | 9C warmer |
| Last spring frost | May 6 | April 4 | 32 days earlier |
| Warmest month | 21C in July | 23C in July | 3C hotter |
Moving from Montréal to Boston reshapes the home year. The coldest month is 9C warmer. Summers get 3C hotter. Your growing season is 68 days longer. Plan on a new rhythm for the house and garden.
What changes about the house
- Coldest month: it is warmer at the destination, though unusual cold can still occur.
- Freezing months: there are fewer at the destination, though individual cold snaps can still occur.
- Cooling: hotter peaks make air conditioning or shading more important. Check attic insulation and window sealing so the house does not trap heat.
- Garden: the frost-free season is longer or the last spring frost is earlier. Check both dates when planning crops and succession sowings.
Season by season
Spring starts earlier
Your last spring frost moves from May 6 to April 4, 32 days earlier. Start planting and outdoor prep sooner.
Summers run hotter
The warmest month goes from 21C in July to 23C in July. Air conditioning, shading, and cooling-load planning matter more.
Winters look milder
Winter coldest month goes from -10C in January to -1C in January; freezing months go from 4 months to 2 months. The winter measures point to a milder season, though unusual cold and ice can still occur.
Tools for both places
Moving from Montréal to Boston, answered
What is the biggest climate change from Montréal to Boston?
Your growing season runs 68 days longer, 150 days becomes 218 days. That is the largest shift in the 30-year climate record.
How are these numbers computed?
From official 30-year climate normals at the nearest station to each place: Montreal/St-Hubert Airport near Montréal and Boston 72509 near Boston. They are planning averages, not forecasts; local microclimates can run a week or two off the station record.
Does the comparison work in reverse?
Yes. Open the comparison tool and swap the two places; the deltas reverse direction but the match score stays the same.
Method and sources
Temperatures and frost dates are from the 30-year climate normals at Montreal/St-Hubert Airport (near Montréal, QC) and Boston 72509 (near Boston, MA). Canadian data is from Environment and Climate Change Canada; United States data is from NOAA NCEI. These are planning averages, not forecasts. See themethodology page for the full calculation.