Maine · live outlook · refreshes every 3 h

Maine sap flow forecast

The next several days for Maine'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.

Maine highlighted on a map of the maple belt, with its forecast towns (Jackman, Paris) marked — Maine in the maple beltDots: Jackman · Paris

Season opens: Mar 4; typical
Closes: Apr 11; typical

114 days to the usual opening. When to tap in Maine

Jackman · Somerset County holds 1,685,551 of Maine's 1,946,642 taps (86.6%; 2022 Census of Agriculture); Jackman is the Somerset town Cornell used as a Maine example in its maple-season climate study.

Forecast for Jackman

Updated Nov 10, 5:44 AM EST

1 sap day in the next 6

freeze thaw 32°F

WedNov 11
32° / 37°
3h below · 20h above
No refreeze forecast
Low of 32°F — no refreeze is forecast. An earlier run may continue, then slow; temperature alone cannot rule out flow.
ThuNov 12
26° / 38°
11h below · 11h above
Sap likely
Freeze (26°F) then 38°F — a real freeze-thaw day.
FriNov 13
27° / 35°
10h below · 12h above
Maybe a light run
A cool 35°F high. The thaw may be too brief for much flow.
SatNov 14
32° / 36°
0h below · 16h above
No refreeze forecast
Low of 32°F — no refreeze is forecast. An earlier run may continue, then slow; temperature alone cannot rule out flow.
SunNov 15
33° / 38°
0h below · 22h above
No refreeze forecast
Low of 33°F — no refreeze is forecast. An earlier run may continue, then slow; temperature alone cannot rule out flow.
MonNov 16
30° / 37°
Maybe a light run
A cool 37°F high. The thaw may be too brief for much flow.

Data: National Weather Service. Verdicts use freeze-thaw thresholds from maple field research; your woods may run a little differently.

Paris · Oxford County ranks second in Maine with 92,452 taps (2022 Census of Agriculture) and represents southern Maine, where UMaine says the season runs mid-February to early April.

Forecast for Paris

Updated Nov 10, 5:44 AM EST

2 sap days in the next 6

freeze thaw 32°F

WedNov 11
36° / 47°
0h below · 24h above
No refreeze forecast
Low of 36°F — no refreeze is forecast. An earlier run may continue, then slow; temperature alone cannot rule out flow.
ThuNov 12
29° / 44°
6h below · 16h above
Classic sap day
Low 29°F, high 44°F — nights in the 20s and days in the 40s: the textbook sap day.
FriNov 13
33° / 41°
0h below · 24h above
Run tapering
No overnight freeze (low 33°F). Yesterday's favorable weather may allow a run to continue, then slow without a refreeze.
SatNov 14
32° / 43°
0h below · 22h above
No refreeze forecast
Low of 32°F — no refreeze is forecast. An earlier run may continue, then slow; temperature alone cannot rule out flow.
SunNov 15
33° / 46°
0h below · 24h above
No refreeze forecast
Low of 33°F — no refreeze is forecast. An earlier run may continue, then slow; temperature alone cannot rule out flow.
MonNov 16
30° / 47°
Sap likely
Freeze (30°F) then 47°F — a real freeze-thaw day.

Data: National Weather Service. Verdicts use freeze-thaw thresholds from maple field research; your woods may run a little differently.

Your exact spot

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Your sugarbush, your forecast

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.National Weather Service API · NOAA National Weather Service
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

LuckySap · free on iPhone & Android

Never miss the first run

LuckySap can ping you the evening before a strong sap day, then keeps your collections, sugar readings and boils in one season log. Free on iPhone and Android.