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Maple sugaring in Greene County, Ohio

Greene County had 8 maple operations and 305 taps in the 2022 Census. Around Xenia, sap usually runs from February 10 to March 18. Here's the long-run pattern, 36 seasons of sap weather, and the outlook this week.
Too early to tapAbout 127 days until the usual start.
Sap starts
Feb 10
typical year
Season ends
Mar 18
about 5 weeks
Sap days / season
39.4
1991–2026 average
Taps, 2022
305
#49 of 63 in OH

Sap-flow outlook at Xenia right now

Full Ohio forecast →

Forecast for Xenia, OH

Updated Oct 6, 4:00 AM EDT

Off-season for now. Sap needs freezing nights, and none are in sight. Greene County's season usually opens around February 10, which is 127 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° / 73°

    0h below · 24h above

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

    0h below · 24h above

    No refreeze forecast
  4. SatOct 10
    47° / 76°

    0h below · 24h above

    No refreeze forecast
  5. SunOct 11
    54° / 74°

    0h below · 24h above

    No refreeze forecast
  6. MonOct 12
    55° / 77°
    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 Xenia

Freeze-thaw weather at Xenia 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 10 – Mar 180246Week 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: 2.0 sap days on averageWeek of Dec 29: 1.6 sap days on averageWeek of Jan 5: 1.6 sap days on averageWeek of Jan 12: 1.7 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: 2.2 sap days on averageWeek of Feb 9: 2.4 sap days on averageWeek of Feb 16: 2.3 sap days on averageWeek of Feb 23: 2.5 sap days on averageWeek of Mar 2: 2.8 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: 2.4 sap days on averageWeek of Mar 30: 1.5 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: 0.2 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 10
Average number of freeze-thaw sap days in each week of the season at Xenia, 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 5; the middle half of seasons fell between Jan 27 and Feb 13. Earliest Jan 9 (2023), latest Mar 4 (2010).
Closing signal
Median Mar 8; middle half between Feb 26 and Mar 14. Earliest Feb 1 (2006), latest Mar 30 (2014).
Sap days by month
Dec24%Jan18%Feb24%Mar27%Apr7%May0%

36 seasons of sap weather

Greene County seasons, 1991–2026

The best sap year at Xenia was 2018 with 52 freeze-thaw days; the leanest was 2003 with 22. 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 29 – Mar 3, 32 sap days3220252025: Feb 6 – Mar 9, 40 sap days4020242024: Feb 3 – Feb 21, 46 sap days4620232023: Jan 9 – Feb 13, 44 sap days4420222022: Feb 7 – Mar 14, 44 sap days4420212021: Feb 8 – Mar 15, 36 sap days3620202020: Jan 28 – Mar 3, 41 sap days4120192019: Feb 6 – Mar 13, 40 sap days4020182018: Jan 19 – Feb 14, 52 sap days5220172017: Jan 30 – Feb 11, 34 sap days3420162016: Feb 1 – Feb 28, 32 sap days3220152015: Feb 19 – Mar 25, 37 sap days3720142014: Mar 1 – Mar 30, 28 sap days2820132013: Feb 22 – Mar 29, 47 sap days4720122012: Jan 26 – Mar 1, 45 sap days4520112011: Feb 12 – Mar 8, 28 sap days2820102010: Mar 4 – Mar 8, 23 sap days2320092009: Feb 3 – Mar 5, 38 sap days3820082008: Feb 8 – Mar 14, 37 sap days3720072007: Feb 7 – Mar 12, 38 sap days3820062006: Jan 15 – Feb 1, 36 sap days3620052005: Feb 4 – Feb 20, 30 sap days3020042004: Feb 13 – Mar 20, 48 sap days4820032003: Mar 1 – Mar 15, 22 sap days2220022002: Jan 21 – Feb 25, 49 sap days4920012001: Feb 13 – Mar 20, 40 sap days4020002000: Jan 24 – Feb 22, 43 sap days4319991999: Jan 26 – Mar 2, 51 sap days5119981998: Jan 22 – Feb 16, 46 sap days4619971997: Jan 26 – Feb 26, 41 sap days4119961996: Feb 9 – Mar 14, 40 sap days4019951995: Feb 15 – Mar 11, 33 sap days3319941994: Feb 16 – Mar 20, 41 sap days4119931993: Feb 20 – Mar 20, 41 sap days4119921992: Jan 27 – Mar 2, 47 sap days4719911991: Feb 2 – Mar 9, 49 sap days49
Each bar runs from the season's opening signal to its closing signal, estimated from daily temperatures at Xenia. Dashed lines mark the typical dates. The right column counts freeze-thaw sap days from December through May.

Maple production

Greene County in the Census of Agriculture

USDA counts maple operations every five years. In Greene County the 2022 Census found 8 farms making syrup (+100% since 2017), with taps +129% and syrup output +90% over the same five years. That works out to about 0.26 gallons of syrup per tap in 2022 (0.31 in 2017). Among the 385 counties in this atlas, Greene County ranks 330 by taps.

Greene County maple production, 2017 and 2022 (USDA Census of Agriculture)
Census yearFarmsTapsGallons of syrupGal / tap
20228305780.26
20174133410.31

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 Xenia (994ft), 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

Greene County sugaring questions

When should I tap maple trees in Greene County, Ohio?
In a typical year the sap starts running around February 10 near Xenia and the season winds down around March 18. 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 9 and as late as Mar 4.
How much maple syrup does Greene County produce?
The 2022 Census of Agriculture counted 8 maple operations in Greene County with 305 taps producing 78 gallons of syrup, ranking 49 of 63 Ohio's counties with published tap counts.
How many sap days does Greene County get in a season?
On average 39.4 freeze-thaw sap days from December through May at Xenia, of which about 14.1 are textbook days with a night in the 20s and a day in the 40s. The best season since 1991 was 2018 (52 sap days); the leanest was 2003 (22).
Where do these dates come from?
From 36 seasons of daily high and low temperatures at Xenia (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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