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Vermont · county maple atlas

Maple sugaring in Lamoille County, Vermont

Lamoille County had 110 maple operations and 1,113,960 taps in the 2022 Census, number 2 in Vermont. Around Hyde Park, sap usually runs from March 4 to April 15. Here's the long-run pattern, 36 seasons of sap weather, and the outlook this week.
Too early to tapAbout 149 days until the usual start.
Sap starts
Mar 4
typical year
Season ends
Apr 15
about 6 weeks
Sap days / season
39.4
1991–2026 average
Taps, 2022
1.1 million
#2 of 12 in VT

Sap-flow outlook at Hyde Park right now

Full Vermont forecast →

Forecast for Hyde Park, VT

Updated Oct 6, 2:25 AM EDT

1 sap day in the next 6

freeze thaw 32°F

  1. WedOct 7
    29° / 65°

    4h below · 17h above

    Sap likely
  2. ThuOct 8
    44° / 65°

    0h below · 24h above

    Run tapering
  3. FriOct 9
    39° / 57°

    0h below · 24h above

    No refreeze forecast
  4. SatOct 10
    37° / 58°

    0h below · 24h above

    No refreeze forecast
  5. SunOct 11
    36° / 68°

    0h below · 24h above

    No refreeze forecast
  6. MonOct 12
    46° / 67°
    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 Hyde Park

Freeze-thaw weather at Hyde Park peaks in the weeks of Mar 2 to Apr 13, which hold about 51% of a season's sap days. March is the busiest month.
Typical season: Mar 4 – Apr 150246Week of Dec 1: 1.3 sap days on averageWeek of Dec 8: 1.4 sap days on averageWeek of Dec 15: 1.3 sap days on averageWeek of Dec 22: 1.1 sap days on averageWeek of Dec 29: 1.1 sap days on averageWeek of Jan 5: 0.8 sap days on averageWeek of Jan 12: 0.9 sap days on averageWeek of Jan 19: 0.7 sap days on averageWeek of Jan 26: 0.5 sap days on averageWeek of Feb 2: 0.9 sap days on averageWeek of Feb 9: 1.0 sap days on averageWeek of Feb 16: 1.9 sap days on averageWeek of Feb 23: 1.7 sap days on averageWeek of Mar 2: 2.1 sap days on averageWeek of Mar 9: 2.6 sap days on averageWeek of Mar 16: 2.5 sap days on averageWeek of Mar 23: 3.4 sap days on averageWeek of Mar 30: 3.5 sap days on averageWeek of Apr 6: 3.2 sap days on averageWeek of Apr 13: 2.7 sap days on averageWeek of Apr 20: 1.9 sap days on averageWeek of Apr 27: 1.5 sap days on averageWeek of May 4: 0.9 sap days on averageWeek of May 11: 0.4 sap days on averageWeek of May 18: 0.2 sap days on averageWeek of May 25: 0.1 sap days on averageDecJanFebMarAprMaytaps in ~Mar 4
Average number of freeze-thaw sap days in each week of the season at Hyde Park, 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 Mar 15; the middle half of seasons fell between Mar 8 and Mar 20. Earliest Feb 17 (2012), latest Mar 27 (2001).
Closing signal
Median Apr 18; middle half between Apr 11 and Apr 21. Earliest Mar 13 (2012), latest Apr 30 (1992).
Sap days by month
Dec14%Jan9%Feb14%Mar30%Apr29%May4%

36 seasons of sap weather

Lamoille County seasons, 1991–2026

The best sap year at Hyde Park was 1999 with 55 freeze-thaw days; the leanest was 2015 with 25. 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: Mar 11 – Apr 12, 30 sap days3020252025: Mar 14 – Apr 18, 36 sap days3620242024: Mar 7 – Apr 10, 42 sap days4220232023: Mar 11 – Apr 10, 53 sap days5320222022: Mar 8 – Apr 11, 44 sap days4420212021: Mar 5 – Apr 5, 30 sap days3020202020: Mar 11 – Apr 13, 51 sap days5120192019: Mar 20 – Apr 18, 32 sap days3220182018: Mar 26 – Apr 24, 45 sap days4520172017: Mar 12 – Apr 15, 34 sap days3420162016: Mar 13 – Apr 17, 51 sap days5120152015: Mar 25 – Apr 25, 25 sap days2520142014: Mar 20 – Apr 20, 32 sap days3220132013: Mar 19 – Apr 23, 39 sap days3920122012: Feb 17 – Mar 13, 39 sap days3920112011: Mar 21 – Apr 22, 28 sap days2820102010: Feb 27 – Mar 29, 41 sap days4120092009: Mar 14 – Apr 17, 39 sap days3920082008: Mar 18 – Apr 18, 40 sap days4020072007: Mar 20 – Apr 21, 39 sap days3920062006: Mar 8 – Apr 12, 38 sap days3820052005: Mar 16 – Apr 19, 42 sap days4220042004: Mar 18 – Apr 22, 41 sap days4120032003: Mar 18 – Apr 18, 29 sap days2920022002: Mar 12 – Apr 11, 47 sap days4720012001: Mar 27 – Apr 30, 34 sap days3420002000: Mar 5 – Apr 8, 42 sap days4219991999: Mar 16 – Apr 16, 55 sap days5519981998: Mar 8 – Apr 12, 37 sap days3719971997: Mar 23 – Apr 27, 45 sap days4519961996: Mar 20 – Apr 19, 39 sap days3919951995: Mar 8 – Apr 11, 42 sap days4219941994: Mar 21 – Apr 23, 36 sap days3619931993: Mar 15 – Apr 19, 34 sap days3419921992: Mar 26 – Apr 30, 42 sap days4219911991: Mar 6 – Apr 4, 47 sap days47
Each bar runs from the season's opening signal to its closing signal, estimated from daily temperatures at Hyde Park. Dashed lines mark the typical dates. The right column counts freeze-thaw sap days from December through May.

Maple production

Lamoille County in the Census of Agriculture

USDA counts maple operations every five years. In Lamoille County the 2022 Census found 110 farms making syrup (-2% since 2017), with taps +75% and syrup output +123% over the same five years. That works out to about 0.42 gallons of syrup per tap in 2022 (0.33 in 2017). Among the 385 counties in this atlas, Lamoille County ranks 3 by taps.

Lamoille County maple production, 2017 and 2022 (USDA Census of Agriculture)
Census yearFarmsTapsGallons of syrupGal / tap
20221101,113,960465,6290.42
2017112637,401208,3970.33

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 Hyde Park (702ft), 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 Vermont's USDA record (12 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 — Vermont, 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

Lamoille County sugaring questions

When should I tap maple trees in Lamoille County, Vermont?
In a typical year the sap starts running around March 4 near Hyde Park and the season winds down around April 15. 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 Feb 17 and as late as Mar 27.
How much maple syrup does Lamoille County produce?
The 2022 Census of Agriculture counted 110 maple operations in Lamoille County with 1,113,960 taps producing 465,629 gallons of syrup, ranking 2 of 12 Vermont's counties with published tap counts.
How many sap days does Lamoille County get in a season?
On average 39.4 freeze-thaw sap days from December through May at Hyde Park, of which about 10.7 are textbook days with a night in the 20s and a day in the 40s. The best season since 1991 was 1999 (55 sap days); the leanest was 2015 (25).
Where do these dates come from?
From 36 seasons of daily high and low temperatures at Hyde Park (PRISM 4-km grid), scored with the same freeze-thaw rule as our live forecast, then calibrated against USDA's reported season dates for Vermont. 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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