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Lower St Anthony Falls Weather Records (USC00214884)

Record envelope, standing records and threshold days for Lower St Anthony Falls (USC00214884), Minnesota, United States, with 36 years of record.

Key Facts for Lower St Anthony Falls

  • Lower St Anthony Falls (USC00214884) is a weather station in Minnesota, United States at 44.98 latitude and -93.25 longitude, 230 m (754 ft) above sea level.
  • The station reports from 1991 to 2026, 36 years of record.
  • 1,464 records set at Lower St Anthony Falls still stand.
  • Records are tracked for tmax, tmin, prcp, snow: an element needs 30 years of data to be eligible.
  • Lower St Anthony Falls set a daily record high maximum temperature of 29.4 C (84.9 F) on 12 October 2026 (provisional).

Provisional Records

Records set in the last 60 days are provisional until they clear the revision window.

About the Station

  • Location: Minnesota, United States, 44.98 latitude, -93.25 longitude.
  • Elevation: 230 m (754 ft).
  • Period of record: 1991 to 2026, 36 years.
  • Eligible elements: tmax, tmin, prcp, snow.

Daily Record Envelope and 2026

14 days at or beyond a record
Daily record high and record low at Lower St Anthony Falls, with 2026 drawn through them The band shows the record high and record low for each calendar day at Lower St Anthony Falls. The lines show the 2026 daily maximum and minimum. 14 days in 2026 matched or passed a record. Temperatures are in degrees Celsius. -40-200204060 JanFebMarAprMayJunJulAugSepOctNovDec
The band shows the record high and record low for each calendar day at Lower St Anthony Falls. The lines show the 2026 daily maximum and minimum. 14 days in 2026 matched or passed a record. Temperatures are in degrees Celsius.
Daily record high and record low at Lower St Anthony Falls, with 2026 drawn through them
MonthHighest record highLowest record low2026 highest maximum2026 lowest minimum
Jan11.7 C (53.1 F)-38.3 C (-36.9 F)7.8 C (46.0 F)-28.3 C (-18.9 F)
Feb15.6 C (60.1 F)-38.9 C (-38.0 F)11.1 C (52.0 F)-16.7 C (1.9 F)
Mar27.2 C (81.0 F)-25.6 C (-14.1 F)21.1 C (70.0 F)-15.6 C (3.9 F)
Apr33.3 C (91.9 F)-17.8 C (0.0 F)29.4 C (84.9 F)-5.0 C (23.0 F)
May37.2 C (99.0 F)-0.6 C (30.9 F)32.2 C (90.0 F)1.7 C (35.1 F)
Jun38.9 C (102.0 F)4.4 C (39.9 F)32.2 C (90.0 F)11.7 C (53.1 F)
Jul43.3 C (109.9 F)7.2 C (45.0 F)36.1 C (97.0 F)14.4 C (57.9 F)
Aug41.1 C (106.0 F)6.7 C (44.1 F)30.6 C (87.1 F)14.4 C (57.9 F)
Sep36.7 C (98.1 F)0.0 C (32.0 F)31.1 C (88.0 F)9.4 C (48.9 F)
Oct33.9 C (93.0 F)-9.4 C (15.1 F)29.4 C (84.9 F)7.8 C (46.0 F)
Nov25.6 C (78.1 F)-20.6 C (-5.1 F)n/an/a
Dec19.4 C (66.9 F)-28.9 C (-20.0 F)n/an/a

Which Years Hold Standing Records

1,464 standing records
Standing records at Lower St Anthony Falls by the year they were set 1,464 records at Lower St Anthony Falls still stand. 2000 holds the most, with 78. 0204060801992: 381993: 501994: 481995: 671996: 561997: 591998: 671999: 502000: 782001: 512002: 502003: 312004: 472005: 372006: 382007: 432008: 192009: 352010: 252011: 262012: 412013: 492014: 702015: 282016: 262017: 332018: 382019: 272020: 292021: 452022: 332023: 402024: 302025: 382026: 22199219962000200420082012201620202024
1,464 records at Lower St Anthony Falls still stand. 2000 holds the most, with 78.
Standing records at Lower St Anthony Falls by the year they were set
Year setStanding records
199238
199350
199448
199567
199656
199759
199867
199950
200078
200151
200250
200331
200447
200537
200638
200743
200819
200935
201025
201126
201241
201349
201470
201528
201626
201733
201838
201927
202029
202145
202233
202340
202430
202538
202622

Wettest Day of Each Month

Jun: 149.9 mm (5.9 in)
Record daily precipitation for each month at Lower St Anthony Falls The wettest day on record for each calendar month at Lower St Anthony Falls. The most was 149.9 mm (5.9 in) on 25 June 2003. 050100150 Jan: 28.7 mm (1.1 in), 18 January 1996 Jan Feb: 31.0 mm (1.2 in), 29 February 2012 Feb Mar: 45.7 mm (1.8 in), 23 March 2011 Mar Apr: 81.8 mm (3.2 in), 23 April 2001 Apr May: 71.1 mm (2.8 in), 24 May 2012 May Jun: 149.9 mm (5.9 in), 25 June 2003 Jun Jul: 103.6 mm (4.1 in), 2 July 1997 Jul Aug: 123.2 mm (4.9 in), 11 August 2010 Aug Sep: 106.7 mm (4.2 in), 16 September 1992 Sep Oct: 107.7 mm (4.2 in), 5 October 2005 Oct Nov: 44.5 mm (1.8 in), 12 November 2015 Nov Dec: 31.5 mm (1.2 in), 26 December 2023 Dec
The wettest day on record for each calendar month at Lower St Anthony Falls. The most was 149.9 mm (5.9 in) on 25 June 2003.
Record daily precipitation for each month at Lower St Anthony Falls
MonthRecord daily precipitation (mm)Date
Jan28.7 mm (1.1 in)18 January 1996
Feb31.0 mm (1.2 in)29 February 2012
Mar45.7 mm (1.8 in)23 March 2011
Apr81.8 mm (3.2 in)23 April 2001
May71.1 mm (2.8 in)24 May 2012
Jun149.9 mm (5.9 in)25 June 2003
Jul103.6 mm (4.1 in)2 July 1997
Aug123.2 mm (4.9 in)11 August 2010
Sep106.7 mm (4.2 in)16 September 1992
Oct107.7 mm (4.2 in)5 October 2005
Nov44.5 mm (1.8 in)12 November 2015
Dec31.5 mm (1.2 in)26 December 2023

Period of Record Coverage

1992 to 2026
Days with data per year at Lower St Anthony Falls 35 years of record at Lower St Anthony Falls, 1992 to 2026. 6 years have data for under 90 percent of days and are left out of rankings: 1992, 1995, 1996, 2001, 2004, 2026. 1992: 206 of 366 days1993: 354 of 365 days1994: 345 of 365 days1995: 316 of 365 days1996: 323 of 366 days1997: 352 of 365 days1998: 355 of 365 days1999: 357 of 365 days2000: 360 of 366 days2001: 299 of 365 days2002: 329 of 365 days2003: 361 of 365 days2004: 329 of 366 days2005: 364 of 365 days2006: 356 of 365 days2007: 361 of 365 days2008: 364 of 366 days2009: 363 of 365 days2010: 344 of 365 days2011: 365 of 365 days2012: 366 of 366 days2013: 360 of 365 days2014: 352 of 365 days2015: 363 of 365 days2016: 361 of 366 days2017: 357 of 365 days2018: 358 of 365 days2019: 361 of 365 days2020: 364 of 366 days2021: 362 of 365 days2022: 365 of 365 days2023: 355 of 365 days2024: 362 of 366 days2025: 339 of 365 days2026: 273 of 365 days1995200020052010201520202025
35 years of record at Lower St Anthony Falls, 1992 to 2026. 6 years have data for under 90 percent of days and are left out of rankings: 1992, 1995, 1996, 2001, 2004, 2026.
Days with data per year at Lower St Anthony Falls
YearDays with dataShare of yearComplete
199220656%No
199335497%Yes
199434595%Yes
199531687%No
199632388%No
199735296%Yes
199835597%Yes
199935798%Yes
200036098%Yes
200129982%No
200232990%Yes
200336199%Yes
200432990%No
2005364100%Yes
200635698%Yes
200736199%Yes
200836499%Yes
200936399%Yes
201034494%Yes
2011365100%Yes
2012366100%Yes
201336099%Yes
201435296%Yes
201536399%Yes
201636199%Yes
201735798%Yes
201835898%Yes
201936199%Yes
202036499%Yes
202136299%Yes
2022365100%Yes
202335597%Yes
202436299%Yes
202533993%Yes
202627375%No

Latest Records

20
Latest records at Lower St Anthony Falls
DateStationRecordValueBeat old record byOld record stoodSignificance
12 October 2026Lower St Anthony Falls, USdaily high max (Provisional)29.4 C (84.9 F)1.1 C (2.0 F)31 years13 of 100 (Routine)
12 October 2026Lower St Anthony Falls, USdaily high min (Tie, Provisional)17.8 C (64.0 F)tie28 years2 of 100 (Routine)
31 August 2026Lower St Anthony Falls, USdaily high min (Tie, Provisional)20.0 C (68.0 F)tie25 years2 of 100 (Routine)
13 August 2026Lower St Anthony Falls, USdaily high min (Tie)21.7 C (71.1 F)tie25 years2 of 100 (Routine)
5 August 2026Lower St Anthony Falls, USdaily low max (Tie)23.9 C (75.0 F)tie12 years1 of 100 (Routine)
1 August 2026Lower St Anthony Falls, USdaily low max20.6 C (69.1 F)4.4 C (7.9 F)12 years18 of 100 (Routine)
27 July 2026Lower St Anthony Falls, USdaily high max36.1 C (97.0 F)1.7 C (3.1 F)27 years15 of 100 (Routine)
10 June 2026Lower St Anthony Falls, USdaily rain15.0 mm (0.6 in)4.3 mm (0.17 in)12 years8 of 100 (Routine)
27 May 2026Lower St Anthony Falls, USdaily high min18.9 C (66.0 F)0.6 C (1.1 F)8 years6 of 100 (Routine)
16 May 2026Lower St Anthony Falls, USdaily high max30.0 C (86.0 F)2.8 C (5.0 F)0 years7 of 100 (Routine)
7 May 2026Lower St Anthony Falls, USdaily low max7.2 C (45.0 F)5.6 C (10.1 F)24 years19 of 100 (Routine)
7 May 2026Lower St Anthony Falls, USdaily low min1.7 C (35.1 F)1.6 C (2.9 F)24 years13 of 100 (Routine)
6 May 2026Lower St Anthony Falls, USdaily low min1.7 C (35.1 F)0.5 C (0.9 F)32 years13 of 100 (Routine)
6 May 2026Lower St Anthony Falls, USdaily low max (Tie)10.0 C (50.0 F)tie29 years2 of 100 (Routine)
23 April 2026Lower St Anthony Falls, USdaily high min10.6 C (51.1 F)1.2 C (2.2 F)25 years12 of 100 (Routine)
23 April 2026Lower St Anthony Falls, USdaily high max (Tie)29.4 C (84.9 F)tie16 years2 of 100 (Routine)
16 March 2026Lower St Anthony Falls, USmonthly snowfall25.4 cm (10.0 in)7.6 cm (3.0 in)13 years31 of 100 (Routine)
16 March 2026Lower St Anthony Falls, USdaily low max (Tie)-1.1 C (30.0 F)tie12 years1 of 100 (Routine)
9 March 2026Lower St Anthony Falls, USdaily high min3.3 C (37.9 F)1.6 C (2.9 F)9 years7 of 100 (Routine)
6 March 2026Lower St Anthony Falls, USdaily high min3.9 C (39.0 F)1.1 C (2.0 F)25 years11 of 100 (Routine)

Climate Trend

28 complete years, 1993 to 2025
Annual mean temperature at Lower St Anthony Falls as warming stripes, 1993 to 2025 One stripe for each of 28 complete years at Lower St Anthony Falls, 1993 to 2025. Blue stripes are years cooler than the station's own mean of 8.4 C (47.1 F); red stripes are warmer. The coolest year was 2014, at 5.4 C (41.7 F), and the warmest was 1998, at 10.7 C (51.3 F). The strongest colour marks a difference of 3.1 C (5.6 F). 1993: 7.4 C, -1.0 C from the station mean1994: 8.5 C, +0.1 C from the station mean1997: 8.3 C, -0.1 C from the station mean1998: 10.7 C, +2.3 C from the station mean1999: 10.1 C, +1.7 C from the station mean2000: 9.1 C, +0.6 C from the station mean2003: 8.6 C, +0.2 C from the station mean2005: 9.4 C, +1.0 C from the station mean2006: 9.8 C, +1.3 C from the station mean2007: 8.9 C, +0.4 C from the station mean2008: 7.5 C, -0.9 C from the station mean2009: 7.8 C, -0.6 C from the station mean2010: 8.7 C, +0.3 C from the station mean2011: 7.6 C, -0.8 C from the station mean2012: 9.6 C, +1.2 C from the station mean2013: 6.2 C, -2.2 C from the station mean2014: 5.4 C, -3.0 C from the station mean2015: 8.4 C, 0.0 C from the station mean2016: 9.0 C, +0.6 C from the station mean2017: 8.4 C, -0.1 C from the station mean2018: 7.4 C, -1.1 C from the station mean2019: 6.6 C, -1.8 C from the station mean2020: 8.3 C, -0.1 C from the station mean2021: 9.3 C, +0.8 C from the station mean2022: 7.1 C, -1.3 C from the station mean2023: 9.2 C, +0.8 C from the station mean2024: 9.9 C, +1.5 C from the station mean2025: 8.4 C, 0.0 C from the station mean1993200020052010201520202025
One stripe for each of 28 complete years at Lower St Anthony Falls, 1993 to 2025. Blue stripes are years cooler than the station's own mean of 8.4 C (47.1 F); red stripes are warmer. The coolest year was 2014, at 5.4 C (41.7 F), and the warmest was 1998, at 10.7 C (51.3 F). The strongest colour marks a difference of 3.1 C (5.6 F).
Annual mean temperature at Lower St Anthony Falls as warming stripes, 1993 to 2025
YearAnnual mean temperatureDifference from the station mean
19937.4 C-1.04 C
19948.5 C+0.12 C
19978.3 C-0.09 C
199810.7 C+2.32 C
199910.1 C+1.70 C
20009.1 C+0.64 C
20038.6 C+0.20 C
20059.4 C+1.01 C
20069.8 C+1.35 C
20078.9 C+0.44 C
20087.5 C-0.92 C
20097.8 C-0.58 C
20108.7 C+0.32 C
20117.6 C-0.82 C
20129.6 C+1.16 C
20136.2 C-2.19 C
20145.4 C-3.02 C
20158.4 C+0.02 C
20169.0 C+0.59 C
20178.4 C-0.06 C
20187.4 C-1.06 C
20196.6 C-1.80 C
20208.3 C-0.07 C
20219.3 C+0.84 C
20227.1 C-1.32 C
20239.2 C+0.83 C
20249.9 C+1.46 C
20258.4 C+0.01 C

This station does not have enough complete years (30 are needed) to fit a temperature trend.

A year is complete when all 12 months have at least 20 days of both daily maximum and daily minimum readings. The annual mean is the mean of the monthly means. The trend describes this one station over this period; it does not say what caused the change.

Extremes by Year

1991 to 2026
Yearly extremes at Lower St Anthony Falls: the record and the median year
MeasureRecordYear of the recordMedian yearYears with a value
Hottest day (TXx)43.3 C (109.9 F)199536.7 C (98.1 F)35
Coldest night (TNn)-38.9 C (-38.0 F)1996-26.7 C (-16.1 F)35
Wettest day (Rx1day)149.9 mm (5.9 in)200363.4 mm (2.5 in)36
Wettest five days (Rx5day)169.7 mm (6.7 in)200392.6 mm (3.6 in)36
Longest dry spell (CDD)40 days199324 days36

Hottest day (TXx)

Hottest day (TXx) at Lower St Anthony Falls by year The hottest day of the year at Lower St Anthony Falls, 1991 to 2026. The record is 43.3 C (109.9 F) in 1995, marked on the chart; the median year is 36.7 C (98.1 F). 30354045200020102020Record: 43.3 C (109.9 F) in 1995
The hottest day of the year at Lower St Anthony Falls, 1991 to 2026. The record is 43.3 C (109.9 F) in 1995, marked on the chart; the median year is 36.7 C (98.1 F).
Hottest day (TXx) at Lower St Anthony Falls by year
YearHottest day (TXx)
1991n/a
199236.7 C (98.1 F)
199335.6 C (96.1 F)
199437.8 C (100.0 F)
199543.3 C (109.9 F)
199638.9 C (102.0 F)
199738.9 C (102.0 F)
199837.8 C (100.0 F)
199942.2 C (108.0 F)
200037.8 C (100.0 F)
200141.1 C (106.0 F)
200236.7 C (98.1 F)
200336.1 C (97.0 F)
200435.0 C (95.0 F)
200536.7 C (98.1 F)
200638.3 C (100.9 F)
200737.8 C (100.0 F)
200834.4 C (93.9 F)
200935.6 C (96.1 F)
201034.4 C (93.9 F)
201138.3 C (100.9 F)
201238.3 C (100.9 F)
201334.4 C (93.9 F)
201432.2 C (90.0 F)
201532.2 C (90.0 F)
201635.0 C (95.0 F)
201735.0 C (95.0 F)
201837.2 C (99.0 F)
201933.9 C (93.0 F)
202035.0 C (95.0 F)
202136.7 C (98.1 F)
202237.8 C (100.0 F)
202336.7 C (98.1 F)
202432.8 C (91.0 F)
202534.4 C (93.9 F)
202636.1 C (97.0 F)

Coldest night (TNn)

Coldest night (TNn) at Lower St Anthony Falls by year The coldest night of the year at Lower St Anthony Falls, 1991 to 2026. The record is -38.9 C (-38.0 F) in 1996, marked on the chart; the median year is -26.7 C (-16.1 F). -40-35-30-25-20200020102020Record: -38.9 C (-38.0 F) in 1996
The coldest night of the year at Lower St Anthony Falls, 1991 to 2026. The record is -38.9 C (-38.0 F) in 1996, marked on the chart; the median year is -26.7 C (-16.1 F).
Coldest night (TNn) at Lower St Anthony Falls by year
YearColdest night (TNn)
1991n/a
1992-25.6 C (-14.1 F)
1993-28.9 C (-20.0 F)
1994-38.3 C (-36.9 F)
1995-27.2 C (-17.0 F)
1996-38.9 C (-38.0 F)
1997-28.9 C (-20.0 F)
1998-28.9 C (-20.0 F)
1999-29.4 C (-20.9 F)
2000-27.2 C (-17.0 F)
2001-27.8 C (-18.0 F)
2002-20.0 C (-4.0 F)
2003-26.7 C (-16.1 F)
2004-30.0 C (-22.0 F)
2005-24.4 C (-11.9 F)
2006-25.0 C (-13.0 F)
2007-26.1 C (-15.0 F)
2008-26.1 C (-15.0 F)
2009-29.4 C (-20.9 F)
2010-26.1 C (-15.0 F)
2011-26.1 C (-15.0 F)
2012-23.9 C (-11.0 F)
2013-24.4 C (-11.9 F)
2014-30.0 C (-22.0 F)
2015-23.9 C (-11.0 F)
2016-27.8 C (-18.0 F)
2017-25.6 C (-14.1 F)
2018-26.7 C (-16.1 F)
2019-32.8 C (-27.0 F)
2020-23.3 C (-9.9 F)
2021-27.8 C (-18.0 F)
2022-26.1 C (-15.0 F)
2023-24.4 C (-11.9 F)
2024-21.7 C (-7.1 F)
2025-27.2 C (-17.0 F)
2026-28.3 C (-18.9 F)

Wettest day (Rx1day)

Wettest day (Rx1day) at Lower St Anthony Falls by year The wettest day of the year at Lower St Anthony Falls, 1991 to 2026. The record is 149.9 mm (5.9 in) in 2003, marked on the chart; the median year is 63.4 mm (2.5 in). 050100150200020102020Record: 149.9 mm (5.9 in) in 2003
The wettest day of the year at Lower St Anthony Falls, 1991 to 2026. The record is 149.9 mm (5.9 in) in 2003, marked on the chart; the median year is 63.4 mm (2.5 in).
Wettest day (Rx1day) at Lower St Anthony Falls by year
YearWettest day (Rx1day)
199161.0 mm (2.4 in)
1992106.7 mm (4.2 in)
199359.7 mm (2.4 in)
199448.8 mm (1.9 in)
199573.2 mm (2.9 in)
199643.9 mm (1.7 in)
1997103.6 mm (4.1 in)
199854.6 mm (2.1 in)
199977.0 mm (3.0 in)
200089.7 mm (3.5 in)
200181.8 mm (3.2 in)
200264.3 mm (2.5 in)
2003149.9 mm (5.9 in)
200462.5 mm (2.5 in)
2005107.7 mm (4.2 in)
2006100.8 mm (4.0 in)
200741.1 mm (1.6 in)
200834.3 mm (1.4 in)
200959.4 mm (2.3 in)
2010123.2 mm (4.9 in)
201189.2 mm (3.5 in)
201271.1 mm (2.8 in)
201358.7 mm (2.3 in)
201447.2 mm (1.9 in)
201558.4 mm (2.3 in)
201682.6 mm (3.3 in)
201766.5 mm (2.6 in)
201872.4 mm (2.9 in)
201956.6 mm (2.2 in)
202039.4 mm (1.6 in)
202150.8 mm (2.0 in)
202241.9 mm (1.6 in)
202339.4 mm (1.6 in)
202468.6 mm (2.7 in)
202585.1 mm (3.4 in)
202633.5 mm (1.3 in)

Wettest five days (Rx5day)

Wettest five days (Rx5day) at Lower St Anthony Falls by year The wettest five days of the year at Lower St Anthony Falls, 1991 to 2026. The record is 169.7 mm (6.7 in) in 2003, marked on the chart; the median year is 92.6 mm (3.6 in). 050100150200200020102020Record: 169.7 mm (6.7 in) in 2003
The wettest five days of the year at Lower St Anthony Falls, 1991 to 2026. The record is 169.7 mm (6.7 in) in 2003, marked on the chart; the median year is 92.6 mm (3.6 in).
Wettest five days (Rx5day) at Lower St Anthony Falls by year
YearWettest five days (Rx5day)
199192.7 mm (3.6 in)
1992108.0 mm (4.3 in)
199391.5 mm (3.6 in)
199485.1 mm (3.4 in)
199584.4 mm (3.3 in)
199688.9 mm (3.5 in)
1997157.9 mm (6.2 in)
199892.5 mm (3.6 in)
199982.8 mm (3.3 in)
2000154.9 mm (6.1 in)
2001106.5 mm (4.2 in)
2002111.6 mm (4.4 in)
2003169.7 mm (6.7 in)
200469.9 mm (2.8 in)
2005110.2 mm (4.3 in)
2006118.6 mm (4.7 in)
200779.5 mm (3.1 in)
200847.8 mm (1.9 in)
200982.2 mm (3.2 in)
2010157.0 mm (6.2 in)
2011132.8 mm (5.2 in)
2012138.1 mm (5.4 in)
2013100.5 mm (4.0 in)
2014114.5 mm (4.5 in)
201572.9 mm (2.9 in)
201690.5 mm (3.6 in)
2017109.7 mm (4.3 in)
2018108.9 mm (4.3 in)
201985.6 mm (3.4 in)
202077.8 mm (3.1 in)
202191.6 mm (3.6 in)
202247.8 mm (1.9 in)
202381.2 mm (3.2 in)
2024108.0 mm (4.3 in)
2025119.9 mm (4.7 in)
202654.6 mm (2.1 in)

Longest dry spell (CDD)

Longest dry spell (CDD) at Lower St Anthony Falls by year The longest dry spell of the year at Lower St Anthony Falls, 1991 to 2026. The record is 40 days in 1993, marked on the chart; the median year is 24 days. 10203040200020102020Record: 40 days in 1993
The longest dry spell of the year at Lower St Anthony Falls, 1991 to 2026. The record is 40 days in 1993, marked on the chart; the median year is 24 days.
Longest dry spell (CDD) at Lower St Anthony Falls by year
YearLongest dry spell (CDD)
199117 days
199218 days
199340 days
199425 days
199522 days
199624 days
199735 days
199830 days
199925 days
200029 days
200120 days
200217 days
200325 days
200423 days
200517 days
200638 days
200721 days
200821 days
200926 days
201029 days
201126 days
201226 days
201324 days
201425 days
201520 days
201620 days
201716 days
201820 days
201926 days
202028 days
202120 days
202217 days
202337 days
202435 days
202520 days
202619 days

Each chart shows one value per year; the dot marks the record year. TXx is the hottest daily maximum, TNn the coldest daily minimum, Rx1day and Rx5day the largest one-day and five-day rain totals, and CDD the longest run of days with less than 1 mm of rain. A year with missing days can understate an extreme.

Frost Dates and Growing Season

28 years with a frost

Across 28 years with a frost, the median last spring frost at Lower St Anthony Falls falls on 21 April and the median first autumn frost on 17 October, which leaves a median of 182 days between them.

Fitted over all years, the growing season changes by +7.2 days per decade at this station.

Frost dates and growing season at Lower St Anthony Falls
MeasureMedian, all yearsEarliest periodRecent period (1993 to 2025)Recent against earliestFitted trend
Last spring frost21 Apriln/a21 Apriln/a-1.7 days per decade
First autumn frost17 Octobern/a17 Octobern/a+5.5 days per decade
Growing days182 daysn/a182 daysn/a+7.2 days per decade

A frost day is a day with a daily minimum at or below 0 C (32 F). The last spring frost and the first autumn frost are the last and first such days of the cold season, and growing days are the days between them. A negative trend for the last spring frost means it comes earlier.

Rainfall Return Levels

32 years, 1992 to 2024

A day with at least 64.1 mm (2.5 in) of rain is expected about once in 2 years. A day with at least 169.2 mm (6.7 in) of rain is expected about once in 100 years.

Rainfall return levels at Lower St Anthony Falls: the daily rain expected about once in a given number of years
Expected about once inA day with at leastNote
2 years64.1 mm (2.5 in)
5 years88.5 mm (3.5 in)
10 years106.0 mm (4.2 in)
25 years129.9 mm (5.1 in)
50 years149.0 mm (5.9 in)Longer than the 32 years of record
100 years169.2 mm (6.7 in)Longer than the 32 years of record

The levels come from a generalised extreme value (GEV) distribution fitted by L-moments to the wettest-day total of each year, 32 years of values from 1992 to 2024.

A return level is an estimate. It is least reliable for the long periods, 50 and 100 years, and for any period longer than the record behind the fit, where the fit has to reach past the largest day actually observed. It is not a forecast.

The largest wettest-day totals in the fit: 149.9 mm (5.9 in) in 2003; 123.2 mm (4.9 in) in 2010; 107.7 mm (4.2 in) in 2005.

Download the Data

  • Data for Lower St Anthony Falls standing records by year: CSV or JSON. Field meanings are on the data page.
  • Data for Lower St Anthony Falls threshold days by year: CSV or JSON. Field meanings are on the data page.

Source: NOAA National Centers for Environmental Information, Global Historical Climatology Network Daily (GHCN-Daily). Records are computed by World Extreme Weather Monitor and are not official NOAA products. (US Government open data (NOAA NCEI)) Data as of 2026-10-14 (14 October 2026). Records are computed by this site and are not official.

Data as of . Last revised (2026-10-14).