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Wisconsin · county maple atlas

Maple sugaring in Chippewa County, Wisconsin

Chippewa County had 59 maple operations and 48,153 taps in the 2022 Census. Around Chippewa Falls, sap usually runs from March 15 to April 7. Here's the long-run pattern, 36 seasons of sap weather, and the outlook this week.
Too early to tapAbout 160 days until the usual start.
Sap starts
Mar 15
typical year
Season ends
Apr 7
about 3 weeks
Sap days / season
34.2
1991–2026 average
Taps, 2022
48,153
#12 of 60 in WI

Sap-flow outlook at Chippewa Falls right now

Full Wisconsin forecast →

Forecast for Chippewa Falls, WI

Updated Oct 6, 6:44 AM EDT

Off-season for now. Sap needs freezing nights, and none are in sight. Chippewa County's season usually opens around March 15, which is 160 days away.

No freeze-thaw days in the forecast

freeze thaw 32°F

  1. WedOct 7
    50° / 72°

    0h below · 24h above

    No refreeze forecast
  2. ThuOct 8
    46° / 66°

    0h below · 24h above

    No refreeze forecast
  3. FriOct 9
    43° / 69°

    0h below · 24h above

    No refreeze forecast
  4. SatOct 10
    53° / 78°

    0h below · 24h above

    No refreeze forecast
  5. SunOct 11
    61° / 76°

    0h below · 24h above

    No refreeze forecast
  6. MonOct 12
    55° / 63°
    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 Chippewa Falls

Freeze-thaw weather at Chippewa Falls peaks in the weeks of Mar 2 to Apr 6, which hold about 53% of a season's sap days. March is the busiest month.
Typical season: Mar 15 – Apr 70246Week of Dec 1: 1.2 sap days on averageWeek of Dec 8: 1.4 sap days on averageWeek of Dec 15: 0.8 sap days on averageWeek of Dec 22: 0.7 sap days on averageWeek of Dec 29: 0.4 sap days on averageWeek of Jan 5: 0.7 sap days on averageWeek of Jan 12: 0.4 sap days on averageWeek of Jan 19: 0.3 sap days on averageWeek of Jan 26: 0.7 sap days on averageWeek of Feb 2: 1.1 sap days on averageWeek of Feb 9: 1.2 sap days on averageWeek of Feb 16: 1.5 sap days on averageWeek of Feb 23: 1.5 sap days on averageWeek of Mar 2: 2.4 sap days on averageWeek of Mar 9: 2.6 sap days on averageWeek of Mar 16: 3.6 sap days on averageWeek of Mar 23: 3.6 sap days on averageWeek of Mar 30: 3.3 sap days on averageWeek of Apr 6: 2.6 sap days on averageWeek of Apr 13: 1.6 sap days on averageWeek of Apr 20: 1.4 sap days on averageWeek of Apr 27: 0.7 sap days on averageWeek of May 4: 0.3 sap days on averageWeek of May 11: 0.2 sap days on averageWeek of May 18: 0.0 sap days on averageWeek of May 25: 0.0 sap days on averageDecJanFebMarAprMaytaps in ~Mar 15
Average number of freeze-thaw sap days in each week of the season at Chippewa Falls, 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 12; the middle half of seasons fell between Mar 1 and Mar 18. Earliest Feb 14 (2012), latest Apr 1 (2013).
Closing signal
Median Apr 10; middle half between Apr 3 and Apr 18. Earliest Mar 11 (2012), latest Apr 29 (2018).
Sap days by month
Dec13%Jan6%Feb15%Mar40%Apr25%May2%

36 seasons of sap weather

Chippewa County seasons, 1991–2026

The best sap year at Chippewa Falls was 2024 with 55 freeze-thaw days; the leanest was 2001 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: Mar 1 – Apr 5, 39 sap days3920252025: Mar 5 – Apr 9, 42 sap days4220242024: Feb 25 – Apr 1, 55 sap days5520232023: Mar 11 – Apr 8, 42 sap days4220222022: Mar 20 – Apr 20, 36 sap days3620212021: Feb 27 – Apr 3, 41 sap days4120202020: Mar 16 – Apr 18, 38 sap days3820192019: Mar 18 – Apr 20, 33 sap days3320182018: Mar 28 – Apr 29, 47 sap days4720172017: Mar 1 – Apr 2, 32 sap days3220162016: Feb 26 – Apr 2, 34 sap days3420152015: Mar 7 – Apr 4, 25 sap days2520142014: Mar 22 – Apr 19, 24 sap days2420132013: Apr 1 – Apr 25, 27 sap days2720122012: Feb 14 – Mar 11, 29 sap days2920112011: Mar 14 – Apr 18, 24 sap days2420102010: Feb 27 – Mar 30, 27 sap days2720092009: Mar 13 – Apr 15, 37 sap days3720082008: Mar 20 – Apr 16, 30 sap days3020072007: Feb 27 – Mar 21, 33 sap days3320062006: Mar 8 – Apr 9, 26 sap days2620052005: Mar 4 – Apr 3, 33 sap days3320042004: Mar 12 – Apr 15, 38 sap days3820032003: Mar 11 – Apr 10, 27 sap days2720022002: Mar 13 – Apr 9, 43 sap days4320012001: Mar 18 – Apr 18, 21 sap days2120002000: Feb 21 – Mar 21, 38 sap days3819991999: Mar 3 – Mar 30, 37 sap days3719981998: Mar 1 – Apr 5, 29 sap days2919971997: Mar 16 – Apr 18, 30 sap days3019961996: Mar 22 – Apr 25, 41 sap days4119951995: Mar 12 – Apr 14, 33 sap days3319941994: Mar 13 – Apr 11, 34 sap days3419931993: Mar 20 – Apr 22, 31 sap days3119921992: Mar 18 – Apr 15, 34 sap days3419911991: Mar 3 – Apr 2, 40 sap days40
Each bar runs from the season's opening signal to its closing signal, estimated from daily temperatures at Chippewa Falls. Dashed lines mark the typical dates. The right column counts freeze-thaw sap days from December through May.

Maple production

Chippewa County in the Census of Agriculture

USDA counts maple operations every five years. In Chippewa County the 2022 Census found 59 farms making syrup (+18% since 2017), with taps +18% and syrup output +8% over the same five years. That works out to about 0.23 gallons of syrup per tap in 2022 (0.26 in 2017). Among the 385 counties in this atlas, Chippewa County ranks 58 by taps.

Chippewa County maple production, 2017 and 2022 (USDA Census of Agriculture)
Census yearFarmsTapsGallons of syrupGal / tap
20225948,15311,3090.23
20175040,74610,4630.26

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 Chippewa Falls (928ft), 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 Wisconsin'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 — Wisconsin, 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

Chippewa County sugaring questions

When should I tap maple trees in Chippewa County, Wisconsin?
In a typical year the sap starts running around March 15 near Chippewa Falls and the season winds down around April 7. 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 14 and as late as Apr 1.
How much maple syrup does Chippewa County produce?
The 2022 Census of Agriculture counted 59 maple operations in Chippewa County with 48,153 taps producing 11,309 gallons of syrup, ranking 12 of 60 Wisconsin's counties with published tap counts.
How many sap days does Chippewa County get in a season?
On average 34.2 freeze-thaw sap days from December through May at Chippewa Falls, of which about 9.4 are textbook days with a night in the 20s and a day in the 40s. The best season since 1991 was 2024 (55 sap days); the leanest was 2001 (21).
Where do these dates come from?
From 36 seasons of daily high and low temperatures at Chippewa Falls (PRISM 4-km grid), scored with the same freeze-thaw rule as our live forecast, then calibrated against USDA's reported season dates for Wisconsin. 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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