Skip to content
LuckySap
Get the app
Ohio · county maple atlas

Maple sugaring in Warren County, Ohio

Warren County had 20 maple operations and 8,960 taps in the 2022 Census. Around Lebanon, sap usually runs from February 6 to March 14. Here's the long-run pattern, 36 seasons of sap weather, and the outlook this week.
Too early to tapAbout 123 days until the usual start.
Sap starts
Feb 6
typical year
Season ends
Mar 14
about 5 weeks
Sap days / season
42.7
1991–2026 average
Taps, 2022
8,960
#11 of 63 in OH

Sap-flow outlook at Lebanon right now

Full Ohio forecast →

Forecast for Lebanon, OH

Updated Oct 6, 4:00 AM EDT

Off-season for now. Sap needs freezing nights, and none are in sight. Warren County's season usually opens around February 6, which is 123 days away.

No freeze-thaw days in the forecast

freeze thaw 32°F

  1. WedOct 7
    46° / 79°

    0h below · 24h above

    No refreeze forecast
  2. ThuOct 8
    53° / 75°

    0h below · 24h above

    No refreeze forecast
  3. FriOct 9
    46° / 73°

    0h below · 24h above

    No refreeze forecast
  4. SatOct 10
    48° / 78°

    0h below · 24h above

    No refreeze forecast
  5. SunOct 11
    55° / 75°

    0h below · 24h above

    No refreeze forecast
  6. MonOct 12
    55° / 78°
    No refreeze forecast

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

When the sap runs

The sugaring calendar at Lebanon

Freeze-thaw weather at Lebanon peaks in the weeks of Jan 26 to Mar 23, which hold about 54% of a season's sap days. February is the busiest month.
Typical season: Feb 6 – Mar 140246Week of Dec 1: 2.2 sap days on averageWeek of Dec 8: 2.6 sap days on averageWeek of Dec 15: 2.5 sap days on averageWeek of Dec 22: 2.3 sap days on averageWeek of Dec 29: 1.8 sap days on averageWeek of Jan 5: 1.9 sap days on averageWeek of Jan 12: 1.9 sap days on averageWeek of Jan 19: 1.7 sap days on averageWeek of Jan 26: 2.2 sap days on averageWeek of Feb 2: 2.5 sap days on averageWeek of Feb 9: 2.8 sap days on averageWeek of Feb 16: 2.6 sap days on averageWeek of Feb 23: 2.9 sap days on averageWeek of Mar 2: 3.0 sap days on averageWeek of Mar 9: 2.4 sap days on averageWeek of Mar 16: 2.3 sap days on averageWeek of Mar 23: 2.4 sap days on averageWeek of Mar 30: 1.3 sap days on averageWeek of Apr 6: 1.3 sap days on averageWeek of Apr 13: 0.3 sap days on averageWeek of Apr 20: 0.1 sap days on averageWeek of Apr 27: 0.0 sap days on averageWeek of May 4: 0.0 sap days on averageWeek of May 11: 0.0 sap days on averageWeek of May 18: 0.0 sap days on averageWeek of May 25: 0.0 sap days on averageDecJanFebMarAprMaytaps in ~Feb 6
Average number of freeze-thaw sap days in each week of the season at Lebanon, 1991–2026. A sap day is an overnight low under 30.2 °F followed by an afternoon high over 37.4 °F. The shaded band is the typical season.

Year-to-year spread

Opening signal
Median Feb 1; the middle half of seasons fell between Jan 22 and Feb 7. Earliest Jan 1 (2006), latest Feb 20 (2003).
Closing signal
Median Mar 4; middle half between Feb 18 and Mar 10. Earliest Feb 1 (2006), latest Mar 20 (1993).
Sap days by month
Dec24%Jan19%Feb25%Mar25%Apr6%May0%

36 seasons of sap weather

Warren County seasons, 1991–2026

The best sap year at Lebanon was 1999 with 54 freeze-thaw days; the leanest was 2010 with 27. Seasons that start early tend to end early too: the trees run on the swing between freezing nights and mild days, and heat ends it.
JanFebMarAprMaysap days20262026: Jan 28 – Mar 3, 37 sap days3720252025: Feb 5 – Mar 10, 43 sap days4320242024: Jan 9 – Feb 13, 47 sap days4720232023: Jan 7 – Feb 9, 46 sap days4620222022: Feb 2 – Mar 5, 52 sap days5220212021: Feb 5 – Mar 9, 42 sap days4220202020: Jan 14 – Feb 18, 41 sap days4120192019: Feb 2 – Mar 9, 47 sap days4720182018: Jan 19 – Feb 14, 52 sap days5220172017: Jan 30 – Feb 7, 37 sap days3720162016: Jan 26 – Feb 28, 34 sap days3420152015: Feb 14 – Mar 19, 38 sap days3820142014: Feb 15 – Mar 19, 35 sap days3520132013: Feb 9 – Mar 15, 52 sap days5220122012: Jan 19 – Feb 21, 47 sap days4720112011: Feb 5 – Mar 8, 32 sap days3220102010: Feb 12 – Mar 8, 27 sap days2720092009: Feb 2 – Mar 5, 40 sap days4020082008: Jan 28 – Mar 3, 42 sap days4220072007: Feb 6 – Mar 12, 39 sap days3920062006: Jan 1 – Feb 1, 42 sap days4220052005: Feb 1 – Feb 13, 37 sap days3720042004: Feb 1 – Mar 1, 50 sap days5020032003: Feb 20 – Mar 15, 28 sap days2820022002: Jan 16 – Feb 19, 51 sap days5120012001: Feb 7 – Mar 11, 44 sap days4420002000: Jan 22 – Feb 22, 50 sap days5019991999: Jan 11 – Feb 11, 54 sap days5419981998: Jan 22 – Feb 16, 45 sap days4519971997: Jan 23 – Feb 26, 42 sap days4219961996: Feb 7 – Mar 14, 43 sap days4319951995: Feb 15 – Mar 5, 39 sap days3919941994: Feb 14 – Mar 20, 42 sap days4219931993: Feb 18 – Mar 20, 45 sap days4519921992: Jan 21 – Feb 13, 50 sap days5019911991: Jan 28 – Mar 4, 46 sap days46
Each bar runs from the season's opening signal to its closing signal, estimated from daily temperatures at Lebanon. Dashed lines mark the typical dates. The right column counts freeze-thaw sap days from December through May.

Maple production

Warren County in the Census of Agriculture

USDA counts maple operations every five years. In Warren County the 2022 Census found 20 farms making syrup (+400% since 2017), with taps +2033% and syrup output +2726% over the same five years. That works out to about 0.33 gallons of syrup per tap in 2022 (0.25 in 2017). Among the 385 counties in this atlas, Warren County ranks 145 by taps.

Warren County maple production, 2017 and 2022 (USDA Census of Agriculture)
Census yearFarmsTapsGallons of syrupGal / tap
2022208,9602,9390.33
201744201040.25

Nearby

Neighboring maple counties

Distances are between reference towns; typical dates are each county's own estimate.

About these numbers

The season dates are estimated from 36 seasons of daily high and low temperatures for the PRISM 4-km grid cell at Lebanon (797ft), scored with the same freeze-thaw rule as our live forecast: a sap day is an overnight low under 30.2 °F followed by an afternoon high over 37.4 °F. Each season's closing signal is the last sap day before accumulated warmth reaches a threshold, and the opening signal sits five weeks before that, never earlier than the first real freeze-thaw week. Tested against 117 state-seasons of USDA-reported dates, the rule lands within 5.5 days of the reported close and 6.6 days of the reported opening on average, and the typical dates shown here are scaled to Ohio's USDA record (8 years). Production figures are copied from the Census as published. Full method, calibration tables and the downloadable dataset →

Sources · 6

  1. 1.2022 Census of Agriculture, County Level Data — Ohio, Table 37: Maple Syrup, 2022 and 2017 · USDA National Agricultural Statistics Service
  2. 2.PRISM daily temperature grids (AN81d, 4 km), accessed 2026-10-05 · PRISM Group, Oregon State University, https://prism.oregonstate.edu
  3. 3.Applied Climate Information System (ACIS) web services · NOAA Regional Climate Centers
  4. 4.USDA NASS maple syrup reports — approximate average season opened and closed dates, 2011–2022 · USDA National Agricultural Statistics Service (mirrored by the University of Vermont)
  5. 5.Sap flow in sugar maple: timing and weather drivers (Frontiers in Agronomy, 2025) · de Lima Santos et al.
  6. 6.GeoNames gazetteer (cities500), CC BY 4.0 · GeoNames

FAQ

Warren County sugaring questions

When should I tap maple trees in Warren County, Ohio?
In a typical year the sap starts running around February 6 near Lebanon and the season winds down around March 14. Have your taps in a day or two before the first forecast string of freezing nights and 40 °F days. In the past 36 seasons the weather signal came as early as Jan 1 and as late as Feb 20.
How much maple syrup does Warren County produce?
The 2022 Census of Agriculture counted 20 maple operations in Warren County with 8,960 taps producing 2,939 gallons of syrup, ranking 11 of 63 Ohio's counties with published tap counts.
How many sap days does Warren County get in a season?
On average 42.7 freeze-thaw sap days from December through May at Lebanon, of which about 13.8 are textbook days with a night in the 20s and a day in the 40s. The best season since 1991 was 1999 (54 sap days); the leanest was 2010 (27).
Where do these dates come from?
From 36 seasons of daily high and low temperatures at Lebanon (PRISM 4-km grid), scored with the same freeze-thaw rule as our live forecast, then calibrated against USDA's reported season dates for Ohio. They describe a typical year at one point in the county; your sugarbush, slope and elevation can shift them by days.

LuckySap · free on iPhone & Android

Get a heads-up when the sap will run in Warren County

LuckySap watches the forecast for your trees and can ping you the night before a strong sap day, then keeps every collection and boil in one season log. Free on iPhone and Android.

Download on the App StoreGet it on Google Play