Skip to content
LuckySap
Get the app
New Hampshire · county maple atlas

Maple sugaring in Sullivan County, New Hampshire

Sullivan County had 38 maple operations and 192,177 taps in the 2022 Census, the most of any county in New Hampshire. Around Newport, sap usually runs from March 5 to April 14. Here's the long-run pattern, 36 seasons of sap weather, and the outlook this week.
Too early to tapAbout 150 days until the usual start.
Sap starts
Mar 5
typical year
Season ends
Apr 14
about 6 weeks
Sap days / season
55.2
1991–2026 average
Taps, 2022
192,177
#1 of 10 in NH

Sap-flow outlook at Newport right now

Full New Hampshire forecast →

Forecast for Newport, NH

Updated Oct 6, 6:54 AM EDT

1 sap day in the next 6

freeze thaw 32°F

  1. WedOct 7
    29° / 62°

    6h below · 16h above

    Sap likely
  2. ThuOct 8
    47° / 66°

    0h below · 24h above

    Run tapering
  3. FriOct 9
    43° / 59°

    0h below · 24h above

    No refreeze forecast
  4. SatOct 10
    41° / 60°

    0h below · 24h above

    No refreeze forecast
  5. SunOct 11
    40° / 66°

    0h below · 24h above

    No refreeze forecast
  6. MonOct 12
    49° / 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 Newport

Freeze-thaw weather at Newport peaks in the weeks of Mar 2 to Apr 13, which hold about 48% of a season's sap days. March is the busiest month.
Typical season: Mar 5 – Apr 140246Week of Dec 1: 2.5 sap days on averageWeek of Dec 8: 2.4 sap days on averageWeek of Dec 15: 1.9 sap days on averageWeek of Dec 22: 1.6 sap days on averageWeek of Dec 29: 1.3 sap days on averageWeek of Jan 5: 1.4 sap days on averageWeek of Jan 12: 1.4 sap days on averageWeek of Jan 19: 1.0 sap days on averageWeek of Jan 26: 1.1 sap days on averageWeek of Feb 2: 1.7 sap days on averageWeek of Feb 9: 1.5 sap days on averageWeek of Feb 16: 2.3 sap days on averageWeek of Feb 23: 2.3 sap days on averageWeek of Mar 2: 2.9 sap days on averageWeek of Mar 9: 3.3 sap days on averageWeek of Mar 16: 3.9 sap days on averageWeek of Mar 23: 4.4 sap days on averageWeek of Mar 30: 4.3 sap days on averageWeek of Apr 6: 4.1 sap days on averageWeek of Apr 13: 3.3 sap days on averageWeek of Apr 20: 2.5 sap days on averageWeek of Apr 27: 1.9 sap days on averageWeek of May 4: 1.1 sap days on averageWeek of May 11: 0.6 sap days on averageWeek of May 18: 0.2 sap days on averageWeek of May 25: 0.0 sap days on averageDecJanFebMarAprMaytaps in ~Mar 5
Average number of freeze-thaw sap days in each week of the season at Newport, 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 13; the middle half of seasons fell between Mar 7 and Mar 18. Earliest Feb 18 (2012), latest Mar 24 (2001).
Closing signal
Median Apr 16; middle half between Apr 9 and Apr 20. Earliest Mar 19 (2012), latest Apr 28 (2001).
Sap days by month
Dec16%Jan10%Feb14%Mar30%Apr26%May4%

36 seasons of sap weather

Sullivan County seasons, 1991–2026

The best sap year at Newport was 1999 with 81 freeze-thaw days; the leanest was 2015 with 33. 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 9 – Apr 13, 43 sap days4320252025: Mar 11 – Apr 14, 35 sap days3520242024: Mar 6 – Apr 9, 56 sap days5620232023: Mar 11 – Apr 10, 60 sap days6020222022: Mar 7 – Apr 9, 56 sap days5620212021: Mar 5 – Apr 7, 38 sap days3820202020: Mar 5 – Apr 9, 66 sap days6620192019: Mar 16 – Apr 18, 39 sap days3920182018: Mar 23 – Apr 24, 56 sap days5620172017: Mar 8 – Apr 10, 44 sap days4420162016: Feb 25 – Apr 1, 67 sap days6720152015: Mar 24 – Apr 25, 33 sap days3320142014: Mar 18 – Apr 21, 46 sap days4620132013: Mar 13 – Apr 16, 57 sap days5720122012: Feb 18 – Mar 19, 64 sap days6420112011: Mar 19 – Apr 22, 36 sap days3620102010: Feb 28 – Mar 29, 51 sap days5120092009: Mar 17 – Apr 20, 53 sap days5320082008: Mar 18 – Apr 18, 51 sap days5120072007: Mar 19 – Apr 23, 64 sap days6420062006: Mar 9 – Apr 12, 68 sap days6820052005: Mar 13 – Apr 17, 59 sap days5920042004: Mar 16 – Apr 18, 58 sap days5820032003: Mar 18 – Apr 21, 50 sap days5020022002: Mar 9 – Apr 12, 68 sap days6820012001: Mar 24 – Apr 28, 61 sap days6120002000: Mar 1 – Apr 3, 62 sap days6219991999: Mar 12 – Apr 16, 81 sap days8119981998: Mar 4 – Apr 8, 69 sap days6919971997: Mar 20 – Apr 24, 60 sap days6019961996: Mar 17 – Apr 20, 48 sap days4819951995: Mar 11 – Apr 15, 63 sap days6319941994: Mar 15 – Apr 19, 61 sap days6119931993: Mar 13 – Apr 15, 50 sap days5019921992: Mar 20 – Apr 17, 54 sap days5419911991: Mar 4 – Apr 5, 61 sap days61
Each bar runs from the season's opening signal to its closing signal, estimated from daily temperatures at Newport. Dashed lines mark the typical dates. The right column counts freeze-thaw sap days from December through May.

Maple production

Sullivan County in the Census of Agriculture

USDA counts maple operations every five years. In Sullivan County the 2022 Census found 38 farms making syrup (+27% since 2017), with taps +19% and syrup output +14% over the same five years. That works out to about 0.34 gallons of syrup per tap in 2022 (0.36 in 2017). Among the 385 counties in this atlas, Sullivan County ranks 20 by taps.

Sullivan County maple production, 2017 and 2022 (USDA Census of Agriculture)
Census yearFarmsTapsGallons of syrupGal / tap
202238192,17765,4850.34
201730161,54257,6130.36

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 Newport (909ft), 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 New Hampshire'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 — New Hampshire, 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

Sullivan County sugaring questions

When should I tap maple trees in Sullivan County, New Hampshire?
In a typical year the sap starts running around March 5 near Newport and the season winds down around April 14. 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 18 and as late as Mar 24.
How much maple syrup does Sullivan County produce?
The 2022 Census of Agriculture counted 38 maple operations in Sullivan County with 192,177 taps producing 65,485 gallons of syrup, ranking 1 of 10 New Hampshire's counties with published tap counts.
How many sap days does Sullivan County get in a season?
On average 55.2 freeze-thaw sap days from December through May at Newport, of which about 13.4 are textbook days with a night in the 20s and a day in the 40s. The best season since 1991 was 1999 (81 sap days); the leanest was 2015 (33).
Where do these dates come from?
From 36 seasons of daily high and low temperatures at Newport (PRISM 4-km grid), scored with the same freeze-thaw rule as our live forecast, then calibrated against USDA's reported season dates for New Hampshire. They describe a typical year at one point in the county; your sugarbush, slope and elevation can shift them by days.

LuckySap · free on iPhone & Android

Get a heads-up when the sap will run in Sullivan County

LuckySap watches the forecast for your trees and can ping you the night before a strong sap day, then keeps every collection and boil in one season log. Free on iPhone and Android.

Download on the App StoreGet it on Google Play