Missouri · live outlook · refreshes every 3 h

Missouri sap flow forecast

The next several days for Missouri'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.

Missouri highlighted on a map of the maple belt, with its forecast towns (Jackson, Columbia) marked — Missouri in the maple beltDots: Jackson · Columbia

Season opens: mid-January to early February; typical
Closes: early March; typical

Jackson · Cape Girardeau County reports the most taps of any Missouri county with published figures (1,075 of 3,091; 2022 Census of Agriculture); MU says sugar maples are most abundant in central and southeast Missouri.

Forecast for Jackson

Updated Nov 10, 8:56 AM EST

2 sap days in the next 6

freeze thaw 32°F

WedNov 11
45° / 72°
0h below · 24h above
No refreeze forecast
Low of 45°F — no refreeze is forecast. An earlier run may continue, then slow; temperature alone cannot rule out flow.
ThuNov 12
43° / 54°
0h below · 24h above
No refreeze forecast
Low of 43°F — no refreeze is forecast. An earlier run may continue, then slow; temperature alone cannot rule out flow.
FriNov 13
31° / 46°
1h below · 20h above
Maybe a light run
Only a light freeze (31°F). Branches may not freeze hard enough for a strong run.
SatNov 14
26° / 50°
8h below · 15h above
Sap likely
Freeze (26°F) then a warm 50°F. A run is possible; watch for a shorter run as the day warms.
SunNov 15
29° / 52°
5h below · 17h above
Sap likely
Freeze (29°F) then a warm 52°F. A run is possible; watch for a shorter run as the day warms.
MonNov 16
34° / 56°
Run tapering
No overnight freeze (low 34°F). Yesterday's favorable weather may allow a run to continue, then slow without a refreeze.

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

Columbia · Central Missouri reference point in the Missouri River hills, where MU Extension says sugar maples are most abundant.

Forecast for Columbia

Updated Nov 10, 8:51 AM EST

2 sap days in the next 6

freeze thaw 32°F

WedNov 11
48° / 63°
0h below · 24h above
No refreeze forecast
Low of 48°F — no refreeze is forecast. An earlier run may continue, then slow; temperature alone cannot rule out flow.
ThuNov 12
38° / 48°
0h below · 24h above
No refreeze forecast
Low of 38°F — no refreeze is forecast. An earlier run may continue, then slow; temperature alone cannot rule out flow.
FriNov 13
29° / 46°
7h below · 15h above
Classic sap day
Low 29°F, high 46°F — nights in the 20s and days in the 40s: the textbook sap day.
SatNov 14
26° / 48°
8h below · 15h above
Classic sap day
Low 26°F, high 48°F — nights in the 20s and days in the 40s: the textbook sap day.
SunNov 15
34° / 54°
0h below · 24h above
Run tapering
No overnight freeze (low 34°F). Yesterday's favorable weather may allow a run to continue, then slow without a refreeze.
MonNov 16
38° / 56°
No refreeze forecast
Low of 38°F — no refreeze is forecast. An earlier run may continue, then slow; temperature alone cannot rule out flow.

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.