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Ohio · county maple atlas

Maple sugaring in Wood County, Ohio

Wood County had 5 maple operations and 15 taps in the 2022 Census. Around Bowling Green, sap usually runs from February 22 to March 29. Here's the long-run pattern, 36 seasons of sap weather, and the outlook this week.
Too early to tapAbout 139 days until the usual start.
Sap starts
Feb 22
typical year
Season ends
Mar 29
about 5 weeks
Sap days / season
36.7
1991–2026 average
Taps, 2022
15
#58 of 63 in OH

Sap-flow outlook at Bowling Green right now

Full Ohio forecast →

Forecast for Bowling Green, OH

Updated Oct 6, 3:46 AM EDT

Off-season for now. Sap needs freezing nights, and none are in sight. Wood County's season usually opens around February 22, which is 139 days away.

No freeze-thaw days in the forecast

freeze thaw 32°F

  1. WedOct 7
    51° / 76°

    0h below · 24h above

    No refreeze forecast
  2. ThuOct 8
    51° / 70°

    0h below · 24h above

    No refreeze forecast
  3. FriOct 9
    44° / 69°

    0h below · 24h above

    No refreeze forecast
  4. SatOct 10
    47° / 74°

    0h below · 24h above

    No refreeze forecast
  5. SunOct 11
    55° / 74°

    0h below · 24h above

    No refreeze forecast
  6. MonOct 12
    55° / 75°
    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 Bowling Green

Freeze-thaw weather at Bowling Green peaks in the weeks of Feb 2 to Apr 6, which hold about 60% of a season's sap days. March is the busiest month.
Typical season: Feb 22 – Mar 290246Week of Dec 1: 1.7 sap days on averageWeek of Dec 8: 2.2 sap days on averageWeek of Dec 15: 1.8 sap days on averageWeek of Dec 22: 1.9 sap days on averageWeek of Dec 29: 1.3 sap days on averageWeek of Jan 5: 1.2 sap days on averageWeek of Jan 12: 1.3 sap days on averageWeek of Jan 19: 0.9 sap days on averageWeek of Jan 26: 1.3 sap days on averageWeek of Feb 2: 1.7 sap days on averageWeek of Feb 9: 1.7 sap days on averageWeek of Feb 16: 2.1 sap days on averageWeek of Feb 23: 2.0 sap days on averageWeek of Mar 2: 2.6 sap days on averageWeek of Mar 9: 2.6 sap days on averageWeek of Mar 16: 2.8 sap days on averageWeek of Mar 23: 2.7 sap days on averageWeek of Mar 30: 2.1 sap days on averageWeek of Apr 6: 1.7 sap days on averageWeek of Apr 13: 0.6 sap days on averageWeek of Apr 20: 0.4 sap days on averageWeek of Apr 27: 0.1 sap days on averageWeek of May 4: 0.1 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 22
Average number of freeze-thaw sap days in each week of the season at Bowling Green, 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 17; the middle half of seasons fell between Feb 6 and Feb 26. Earliest Jan 22 (2023), latest Mar 7 (1993).
Closing signal
Median Mar 19; middle half between Mar 8 and Mar 31. Earliest Feb 18 (2017), latest Apr 6 (2014).
Sap days by month
Dec22%Jan14%Feb21%Mar32%Apr11%May0%

36 seasons of sap weather

Wood County seasons, 1991–2026

The best sap year at Bowling Green was 1999 with 47 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 4, 34 sap days3420252025: Feb 12 – Mar 18, 39 sap days3920242024: Feb 4 – Mar 3, 39 sap days3920232023: Jan 22 – Feb 26, 36 sap days3620222022: Feb 14 – Mar 14, 44 sap days4420212021: Feb 16 – Mar 21, 34 sap days3420202020: Feb 7 – Mar 8, 43 sap days4320192019: Feb 23 – Mar 28, 37 sap days3720182018: Feb 11 – Mar 18, 46 sap days4620172017: Jan 31 – Feb 18, 30 sap days3020162016: Feb 4 – Feb 28, 40 sap days4020152015: Mar 7 – Apr 4, 32 sap days3220142014: Mar 6 – Apr 6, 25 sap days2520132013: Mar 3 – Apr 4, 42 sap days4220122012: Feb 5 – Mar 12, 42 sap days4220112011: Feb 27 – Apr 3, 25 sap days2520102010: Feb 28 – Mar 10, 23 sap days2320092009: Feb 15 – Mar 22, 37 sap days3720082008: Feb 26 – Mar 31, 34 sap days3420072007: Feb 19 – Mar 21, 30 sap days3020062006: Feb 4 – Mar 8, 40 sap days4020052005: Feb 26 – Mar 27, 29 sap days2920042004: Feb 20 – Mar 25, 33 sap days3320032003: Feb 24 – Mar 31, 21 sap days2120022002: Feb 6 – Mar 12, 45 sap days4520012001: Mar 3 – Apr 5, 39 sap days3920002000: Jan 31 – Mar 6, 40 sap days4019991999: Feb 23 – Mar 30, 47 sap days4719981998: Jan 26 – Feb 25, 44 sap days4419971997: Feb 17 – Mar 20, 45 sap days4519961996: Feb 25 – Mar 31, 36 sap days3619951995: Feb 10 – Mar 11, 40 sap days4019941994: Feb 26 – Apr 1, 37 sap days3719931993: Mar 7 – Apr 4, 27 sap days2719921992: Feb 3 – Mar 2, 45 sap days4519911991: Feb 17 – Mar 18, 41 sap days41
Each bar runs from the season's opening signal to its closing signal, estimated from daily temperatures at Bowling Green. Dashed lines mark the typical dates. The right column counts freeze-thaw sap days from December through May.

Maple production

Wood County in the Census of Agriculture

USDA counts maple operations every five years. In Wood County the 2022 Census found 5 farms making syrup, with taps null and syrup output null over the same five years. That works out to about 0.33 gallons of syrup per tap in 2022. Among the 385 counties in this atlas, Wood County ranks 370 by taps.

Wood County maple production, 2017 and 2022 (USDA Census of Agriculture)
Census yearFarmsTapsGallons of syrupGal / tap
202251550.33
2017000—

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 Bowling Green (686ft), 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

Wood County sugaring questions

When should I tap maple trees in Wood County, Ohio?
In a typical year the sap starts running around February 22 near Bowling Green and the season winds down around March 29. 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 22 and as late as Mar 7.
How much maple syrup does Wood County produce?
The 2022 Census of Agriculture counted 5 maple operations in Wood County with 15 taps producing 5 gallons of syrup, ranking 58 of 63 Ohio's counties with published tap counts.
How many sap days does Wood County get in a season?
On average 36.7 freeze-thaw sap days from December through May at Bowling Green, of which about 14.3 are textbook days with a night in the 20s and a day in the 40s. The best season since 1991 was 1999 (47 sap days); the leanest was 2003 (21).
Where do these dates come from?
From 36 seasons of daily high and low temperatures at Bowling Green (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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