New Brunswick · live outlook · refreshes every 3 h

New Brunswick sap flow forecast

The next several days for New Brunswick's sugaring country, read the way a sugarmaker reads them: how cold the night gets, how warm the afternoon gets, and whether that adds up to a run.

New Brunswick highlighted on a map of the maple belt, with its forecast town (Saint-Quentin) marked — New Brunswick in the maple beltDots: Saint-Quentin

Season opens: late February to March (south first); typical
Closes: April (later in the north); typical

Saint-Quentin · Recognized as the 'Maple Capital of the Atlantic' (Town of Saint-Quentin), in northwestern New Brunswick, home to operations as large as 115,000 taps (ACOA, 2026).

Forecast for Saint-Quentin

Updated Nov 10, 4:00 AM EST

2 sap days in the next 6

freeze thaw 0 °C

WedNov 11
-2° / 2°
Maybe a light run
A cool 36°F high. The thaw may be too brief for much flow.
ThuNov 12
-8° / 4°
Sap likely
A deep freeze (18°F) then 39°F. A later start is possible while the wood thaws.
FriNov 13
-7° / 4°
Sap likely
A deep freeze (19°F) then 39°F. A later start is possible while the wood thaws.
SatNov 14
-1° / 3°
Maybe a light run
Only a light freeze (30°F). Branches may not freeze hard enough for a strong run.
SunNov 15
0° / 3°
No refreeze forecast
Low of 32°F — no refreeze is forecast. An earlier run may continue, then slow; temperature alone cannot rule out flow.
MonNov 16
-1° / 2°
Maybe a light run
Only a light freeze (30°F). Branches may not freeze hard enough for a strong run.

Data: Environment and Climate Change Canada. Verdicts use freeze-thaw thresholds from maple field research; your woods may run a little differently.

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Hourly temperatures for your exact spot, turned into a day-by-day sap-run outlook. US and Canada.

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Data & method · 4

1.MSC GeoMet — city page weather · Environment and Climate Change Canada
2.Sap flow in sugar maple: timing and weather drivers (Frontiers in Agronomy, 2025) · de Lima Santos et al.
3.Maple Sugaring Tips for Beginners and Backyard Maple Sugar Producers · UNH Extension
4.North American Maple Syrup Producers Manual, 2nd ed. (Bulletin 856) · The Ohio State University Extension

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