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Ohio · county maple atlas

Maple sugaring in Clinton County, Ohio

Clinton County had 10 maple operations and 2,180 taps in the 2022 Census. Around Wilmington, sap usually runs from February 11 to March 19. Here's the long-run pattern, 36 seasons of sap weather, and the outlook this week.
Too early to tapAbout 128 days until the usual start.
Sap starts
Feb 11
typical year
Season ends
Mar 19
about 5 weeks
Sap days / season
39.8
1991–2026 average
Taps, 2022
2,180
#28 of 63 in OH

Sap-flow outlook at Wilmington right now

Full Ohio forecast →

Forecast for Wilmington, OH

Updated Oct 6, 4:00 AM EDT

Off-season for now. Sap needs freezing nights, and none are in sight. Clinton County's season usually opens around February 11, which is 128 days away.

No freeze-thaw days in the forecast

freeze thaw 32°F

  1. WedOct 7
    46° / 77°

    0h below · 24h above

    No refreeze forecast
  2. ThuOct 8
    52° / 74°

    0h below · 24h above

    No refreeze forecast
  3. FriOct 9
    45° / 71°

    0h below · 24h above

    No refreeze forecast
  4. SatOct 10
    48° / 76°

    0h below · 24h above

    No refreeze forecast
  5. SunOct 11
    54° / 73°

    0h below · 24h above

    No refreeze forecast
  6. MonOct 12
    56° / 76°
    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 Wilmington

Freeze-thaw weather at Wilmington peaks in the weeks of Jan 26 to Mar 23, which hold about 53% of a season's sap days. March is the busiest month.
Typical season: Feb 11 – Mar 190246Week of Dec 1: 2.0 sap days on averageWeek of Dec 8: 2.4 sap days on averageWeek of Dec 15: 2.3 sap days on averageWeek of Dec 22: 2.1 sap days on averageWeek of Dec 29: 1.6 sap days on averageWeek of Jan 5: 1.7 sap days on averageWeek of Jan 12: 1.8 sap days on averageWeek of Jan 19: 1.5 sap days on averageWeek of Jan 26: 1.9 sap days on averageWeek of Feb 2: 2.1 sap days on averageWeek of Feb 9: 2.4 sap days on averageWeek of Feb 16: 2.2 sap days on averageWeek of Feb 23: 2.5 sap days on averageWeek of Mar 2: 2.7 sap days on averageWeek of Mar 9: 2.2 sap days on averageWeek of Mar 16: 2.3 sap days on averageWeek of Mar 23: 2.6 sap days on averageWeek of Mar 30: 1.5 sap days on averageWeek of Apr 6: 1.4 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 11
Average number of freeze-thaw sap days in each week of the season at Wilmington, 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 6; the middle half of seasons fell between Jan 25 and Feb 13. Earliest Jan 1 (2006), latest Mar 4 (2010).
Closing signal
Median Mar 9; middle half between Feb 26 and Mar 15. Earliest Feb 1 (2006), latest Mar 30 (2014).
Sap days by month
Dec24%Jan19%Feb23%Mar27%Apr7%May0%

36 seasons of sap weather

Clinton County seasons, 1991–2026

The best sap year at Wilmington was 1991 with 52 freeze-thaw days; the leanest was 2003 with 21. 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: Feb 10 – Mar 3, 28 sap days2820252025: Feb 6 – Mar 9, 38 sap days3820242024: Feb 3 – Feb 14, 43 sap days4320232023: Jan 7 – Feb 9, 44 sap days4420222022: Feb 4 – Mar 10, 43 sap days4320212021: Feb 10 – Mar 16, 38 sap days3820202020: Jan 28 – Mar 3, 42 sap days4220192019: Feb 6 – Mar 13, 39 sap days3920182018: Jan 20 – Feb 17, 52 sap days5220172017: Jan 10 – Feb 11, 37 sap days3720162016: Feb 2 – Mar 6, 37 sap days3720152015: Feb 18 – Mar 25, 40 sap days4020142014: Mar 1 – Mar 30, 29 sap days2920132013: Feb 17 – Mar 23, 47 sap days4720122012: Jan 25 – Mar 1, 46 sap days4620112011: Feb 12 – Mar 11, 31 sap days3120102010: Mar 4 – Mar 8, 23 sap days2320092009: Feb 3 – Mar 5, 40 sap days4020082008: Feb 8 – Mar 14, 41 sap days4120072007: Feb 8 – Mar 13, 38 sap days3820062006: Jan 1 – Feb 1, 39 sap days3920052005: Feb 4 – Feb 20, 31 sap days3120042004: Feb 13 – Mar 20, 50 sap days5020032003: Mar 1 – Mar 15, 21 sap days2120022002: Jan 20 – Feb 24, 49 sap days4920012001: Feb 13 – Mar 20, 41 sap days4120002000: Jan 23 – Feb 22, 44 sap days4419991999: Jan 24 – Feb 27, 49 sap days4919981998: Jan 16 – Feb 16, 44 sap days4419971997: Jan 24 – Feb 26, 39 sap days3919961996: Feb 9 – Mar 14, 41 sap days4119951995: Feb 15 – Mar 11, 36 sap days3619941994: Feb 14 – Mar 20, 37 sap days3719931993: Feb 19 – Mar 20, 38 sap days3819921992: Jan 26 – Mar 2, 46 sap days4619911991: Feb 10 – Mar 17, 52 sap days52
Each bar runs from the season's opening signal to its closing signal, estimated from daily temperatures at Wilmington. Dashed lines mark the typical dates. The right column counts freeze-thaw sap days from December through May.

Maple production

Clinton County in the Census of Agriculture

USDA counts maple operations every five years. In Clinton County the 2022 Census found 10 farms making syrup (0% since 2017), with taps -8% and syrup output +14% over the same five years. That works out to about 0.16 gallons of syrup per tap in 2022 (0.13 in 2017). Among the 385 counties in this atlas, Clinton County ranks 249 by taps.

Clinton County maple production, 2017 and 2022 (USDA Census of Agriculture)
Census yearFarmsTapsGallons of syrupGal / tap
2022102,1803420.16
2017102,3772990.13

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 Wilmington (997ft), 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

Clinton County sugaring questions

When should I tap maple trees in Clinton County, Ohio?
In a typical year the sap starts running around February 11 near Wilmington and the season winds down around March 19. 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 Mar 4.
How much maple syrup does Clinton County produce?
The 2022 Census of Agriculture counted 10 maple operations in Clinton County with 2,180 taps producing 342 gallons of syrup, ranking 28 of 63 Ohio's counties with published tap counts.
How many sap days does Clinton County get in a season?
On average 39.8 freeze-thaw sap days from December through May at Wilmington, of which about 14.2 are textbook days with a night in the 20s and a day in the 40s. The best season since 1991 was 1991 (52 sap days); the leanest was 2003 (21).
Where do these dates come from?
From 36 seasons of daily high and low temperatures at Wilmington (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.

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