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Minnesota · county maple atlas

Maple sugaring in Anoka County, Minnesota

Anoka County had 14 maple operations and 556 taps in the 2022 Census. Around Anoka, sap usually runs from March 2 to April 1. Here's the long-run pattern, 36 seasons of sap weather, and the outlook this week.
Too early to tapAbout 147 days until the usual start.
Sap starts
Mar 2
typical year
Season ends
Apr 1
about 4 weeks
Sap days / season
34.8
1991–2026 average
Taps, 2022
556
#22 of 41 in MN

Sap-flow outlook at Anoka right now

Full Minnesota forecast →

Forecast for Anoka, MN

Updated Oct 6, 6:44 AM EDT

Off-season for now. Sap needs freezing nights, and none are in sight. Anoka County's season usually opens around March 2, which is 147 days away.

No freeze-thaw days in the forecast

freeze thaw 32°F

  1. WedOct 7
    51° / 71°

    0h below · 24h above

    No refreeze forecast
  2. ThuOct 8
    47° / 66°

    0h below · 24h above

    No refreeze forecast
  3. FriOct 9
    46° / 69°

    0h below · 24h above

    No refreeze forecast
  4. SatOct 10
    56° / 78°

    0h below · 24h above

    No refreeze forecast
  5. SunOct 11
    62° / 73°

    0h below · 24h above

    No refreeze forecast
  6. MonOct 12
    53° / 59°
    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 Anoka

Freeze-thaw weather at Anoka peaks in the weeks of Mar 2 to Apr 6, which hold about 50% of a season's sap days. March is the busiest month.
Typical season: Mar 2 – Apr 10246Week of Dec 1: 1.3 sap days on averageWeek of Dec 8: 1.6 sap days on averageWeek of Dec 15: 1.1 sap days on averageWeek of Dec 22: 0.9 sap days on averageWeek of Dec 29: 0.5 sap days on averageWeek of Jan 5: 0.6 sap days on averageWeek of Jan 12: 0.5 sap days on averageWeek of Jan 19: 0.4 sap days on averageWeek of Jan 26: 1.0 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: 1.6 sap days on averageWeek of Feb 23: 1.8 sap days on averageWeek of Mar 2: 2.3 sap days on averageWeek of Mar 9: 2.4 sap days on averageWeek of Mar 16: 3.7 sap days on averageWeek of Mar 23: 3.4 sap days on averageWeek of Mar 30: 3.0 sap days on averageWeek of Apr 6: 2.6 sap days on averageWeek of Apr 13: 1.7 sap days on averageWeek of Apr 20: 1.3 sap days on averageWeek of Apr 27: 0.8 sap days on averageWeek of May 4: 0.1 sap days on averageWeek of May 11: 0.1 sap days on averageWeek of May 18: 0.0 sap days on averageWeek of May 25: 0.0 sap days on averageDecJanFebMarAprMaytaps in ~Mar 2
Average number of freeze-thaw sap days in each week of the season at Anoka, 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 2 and Mar 18. Earliest Feb 14 (2012), latest Mar 31 (2013).
Closing signal
Median Apr 10; middle half between Apr 3 and Apr 18. Earliest Mar 11 (2012), latest Apr 29 (1996).
Sap days by month
Dec15%Jan8%Feb15%Mar37%Apr24%May1%

36 seasons of sap weather

Anoka County seasons, 1991–2026

The best sap year at Anoka was 2024 with 56 freeze-thaw days; the leanest was 1998 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 24 – Mar 29, 46 sap days4620252025: Mar 2 – Apr 6, 45 sap days4520242024: Mar 2 – Apr 6, 56 sap days5620232023: Mar 20 – Apr 24, 35 sap days3520222022: Mar 24 – Apr 28, 37 sap days3720212021: Feb 28 – Apr 2, 47 sap days4720202020: Mar 16 – Apr 19, 43 sap days4320192019: Mar 17 – Apr 19, 35 sap days3520182018: Mar 27 – Apr 28, 43 sap days4320172017: Feb 25 – Apr 1, 36 sap days3620162016: Feb 23 – Mar 29, 39 sap days3920152015: Mar 4 – Apr 5, 29 sap days2920142014: Mar 21 – Apr 19, 23 sap days2320132013: Mar 31 – Apr 25, 30 sap days3020122012: Feb 14 – Mar 11, 36 sap days3620112011: Mar 11 – Apr 6, 24 sap days2420102010: Feb 27 – Mar 29, 23 sap days2320092009: Mar 13 – Apr 14, 36 sap days3620082008: Mar 20 – Apr 16, 34 sap days3420072007: Mar 9 – Apr 13, 36 sap days3620062006: Mar 8 – Apr 9, 31 sap days3120052005: Mar 3 – Apr 3, 35 sap days3520042004: Mar 5 – Apr 6, 30 sap days3020032003: Mar 26 – Apr 9, 27 sap days2720022002: Mar 12 – Apr 10, 47 sap days4720012001: Mar 17 – Apr 18, 21 sap days2120002000: Feb 20 – Mar 21, 37 sap days3719991999: Mar 5 – Mar 27, 38 sap days3819981998: Mar 17 – Apr 4, 21 sap days2119971997: Mar 18 – Apr 18, 27 sap days2719961996: Mar 25 – Apr 29, 41 sap days4119951995: Mar 10 – Apr 10, 30 sap days3019941994: Mar 13 – Apr 11, 36 sap days3619931993: Mar 19 – Apr 21, 27 sap days2719921992: Mar 16 – Apr 15, 35 sap days3519911991: Mar 2 – Apr 1, 38 sap days38
Each bar runs from the season's opening signal to its closing signal, estimated from daily temperatures at Anoka. Dashed lines mark the typical dates. The right column counts freeze-thaw sap days from December through May.

Maple production

Anoka County in the Census of Agriculture

USDA counts maple operations every five years. In Anoka County the 2022 Census found 14 farms making syrup (+133% since 2017), with taps +237% and syrup output +343% over the same five years. That works out to about 0.18 gallons of syrup per tap in 2022 (0.14 in 2017). Among the 385 counties in this atlas, Anoka County ranks 310 by taps.

Anoka County maple production, 2017 and 2022 (USDA Census of Agriculture)
Census yearFarmsTapsGallons of syrupGal / tap
2022145561020.18
20176165230.14

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 Anoka (892ft), 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 Minnesota's USDA record (3 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 — Minnesota, 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

Anoka County sugaring questions

When should I tap maple trees in Anoka County, Minnesota?
In a typical year the sap starts running around March 2 near Anoka and the season winds down around April 1. 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 Mar 31.
How much maple syrup does Anoka County produce?
The 2022 Census of Agriculture counted 14 maple operations in Anoka County with 556 taps producing 102 gallons of syrup, ranking 22 of 41 Minnesota's counties with published tap counts.
How many sap days does Anoka County get in a season?
On average 34.8 freeze-thaw sap days from December through May at Anoka, of which about 11 are textbook days with a night in the 20s and a day in the 40s. The best season since 1991 was 2024 (56 sap days); the leanest was 1998 (21).
Where do these dates come from?
From 36 seasons of daily high and low temperatures at Anoka (PRISM 4-km grid), scored with the same freeze-thaw rule as our live forecast, then calibrated against USDA's reported season dates for Minnesota. 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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