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Ohio · county maple atlas

Maple sugaring in Guernsey County, Ohio

Guernsey County had 5 maple operations and 467 taps in the 2022 Census. Around Cambridge, sap usually runs from February 12 to March 21. Here's the long-run pattern, 36 seasons of sap weather, and the outlook this week.
Too early to tapAbout 129 days until the usual start.
Sap starts
Feb 12
typical year
Season ends
Mar 21
about 5 weeks
Sap days / season
46.7
1991–2026 average
Taps, 2022
467
#43 of 63 in OH

Sap-flow outlook at Cambridge right now

Full Ohio forecast →

Forecast for Cambridge, OH

Updated Oct 6, 8:36 AM EDT

Off-season for now. Sap needs freezing nights, and none are in sight. Guernsey County's season usually opens around February 12, which is 129 days away.

No freeze-thaw days in the forecast

freeze thaw 32°F

  1. WedOct 7
    43° / 74°

    0h below · 24h above

    No refreeze forecast
  2. ThuOct 8
    52° / 72°

    0h below · 24h above

    No refreeze forecast
  3. FriOct 9
    45° / 69°

    0h below · 24h above

    No refreeze forecast
  4. SatOct 10
    46° / 73°

    0h below · 24h above

    No refreeze forecast
  5. SunOct 11
    52° / 71°

    0h below · 24h above

    No refreeze forecast
  6. MonOct 12
    55° / 73°
    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 Cambridge

Freeze-thaw weather at Cambridge peaks in the weeks of Jan 26 to Mar 23, which hold about 52% of a season's sap days. March is the busiest month.
Typical season: Feb 12 – Mar 210246Week of Dec 1: 2.6 sap days on averageWeek of Dec 8: 2.9 sap days on averageWeek of Dec 15: 2.5 sap days on averageWeek of Dec 22: 2.4 sap days on averageWeek of Dec 29: 1.8 sap days on averageWeek of Jan 5: 2.1 sap days on averageWeek of Jan 12: 2.0 sap days on averageWeek of Jan 19: 1.5 sap days on averageWeek of Jan 26: 2.1 sap days on averageWeek of Feb 2: 2.6 sap days on averageWeek of Feb 9: 2.4 sap days on averageWeek of Feb 16: 2.7 sap days on averageWeek of Feb 23: 3.0 sap days on averageWeek of Mar 2: 3.2 sap days on averageWeek of Mar 9: 3.0 sap days on averageWeek of Mar 16: 2.7 sap days on averageWeek of Mar 23: 2.8 sap days on averageWeek of Mar 30: 1.8 sap days on averageWeek of Apr 6: 1.6 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 12
Average number of freeze-thaw sap days in each week of the season at Cambridge, 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 7; the middle half of seasons fell between Jan 25 and Feb 11. Earliest Jan 10 (2017), latest Mar 4 (2010).
Closing signal
Median Mar 11; middle half between Feb 25 and Mar 15. Earliest Feb 2 (2006), latest Mar 30 (2015).
Sap days by month
Dec24%Jan18%Feb23%Mar27%Apr8%May0%

36 seasons of sap weather

Guernsey County seasons, 1991–2026

The best sap year at Cambridge was 1999 with 58 freeze-thaw days; the leanest was 2003 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 30 – Mar 3, 42 sap days4220252025: Feb 8 – Mar 11, 45 sap days4520242024: Jan 18 – Feb 22, 52 sap days5220232023: Jan 11 – Feb 15, 55 sap days5520222022: Feb 10 – Mar 15, 55 sap days5520212021: Feb 13 – Mar 20, 52 sap days5220202020: Jan 28 – Mar 3, 51 sap days5120192019: Feb 6 – Mar 13, 49 sap days4920182018: Jan 19 – Feb 19, 58 sap days5820172017: Jan 10 – Feb 11, 43 sap days4320162016: Feb 1 – Mar 4, 40 sap days4020152015: Feb 23 – Mar 30, 39 sap days3920142014: Feb 22 – Mar 28, 40 sap days4020132013: Feb 11 – Mar 16, 49 sap days4920122012: Jan 25 – Mar 1, 52 sap days5220112011: Feb 11 – Mar 12, 33 sap days3320102010: Mar 4 – Mar 10, 29 sap days2920092009: Feb 7 – Mar 14, 45 sap days4520082008: Feb 8 – Mar 14, 47 sap days4720072007: Feb 7 – Mar 13, 45 sap days4520062006: Jan 16 – Feb 2, 42 sap days4220052005: Jan 25 – Feb 14, 42 sap days4220042004: Feb 8 – Mar 15, 53 sap days5320032003: Feb 20 – Mar 15, 27 sap days2720022002: Jan 17 – Feb 20, 51 sap days5120012001: Feb 9 – Mar 12, 49 sap days4920002000: Jan 23 – Feb 22, 55 sap days5519991999: Jan 22 – Feb 26, 58 sap days5819981998: Jan 11 – Feb 10, 41 sap days4119971997: Jan 25 – Feb 27, 52 sap days5219961996: Feb 9 – Mar 15, 44 sap days4419951995: Feb 15 – Mar 12, 51 sap days5119941994: Feb 16 – Mar 20, 44 sap days4419931993: Feb 18 – Mar 20, 44 sap days4419921992: Jan 26 – Mar 2, 52 sap days5219911991: Jan 29 – Mar 5, 54 sap days54
Each bar runs from the season's opening signal to its closing signal, estimated from daily temperatures at Cambridge. Dashed lines mark the typical dates. The right column counts freeze-thaw sap days from December through May.

Maple production

Guernsey County in the Census of Agriculture

USDA counts maple operations every five years. In Guernsey County the 2022 Census found 5 farms making syrup (+400% since 2017). That works out to about 0.16 gallons of syrup per tap in 2022. Among the 385 counties in this atlas, Guernsey County ranks 318 by taps.

Guernsey County maple production, 2017 and 2022 (USDA Census of Agriculture)
Census yearFarmsTapsGallons of syrupGal / tap
20225467730.16
20171withheldwithheld—

“Withheld” means USDA suppressed the figure to avoid disclosing data for individual operations; the farm count is still published.

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 Cambridge (856ft), 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

Guernsey County sugaring questions

When should I tap maple trees in Guernsey County, Ohio?
In a typical year the sap starts running around February 12 near Cambridge and the season winds down around March 21. 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 10 and as late as Mar 4.
How much maple syrup does Guernsey County produce?
The 2022 Census of Agriculture counted 5 maple operations in Guernsey County with 467 taps producing 73 gallons of syrup, ranking 43 of 63 Ohio's counties with published tap counts.
How many sap days does Guernsey County get in a season?
On average 46.7 freeze-thaw sap days from December through May at Cambridge, of which about 14.6 are textbook days with a night in the 20s and a day in the 40s. The best season since 1991 was 1999 (58 sap days); the leanest was 2003 (27).
Where do these dates come from?
From 36 seasons of daily high and low temperatures at Cambridge (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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