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Ottertail Weather Records (USC00216276)

Record envelope, standing records and threshold days for Ottertail (USC00216276), Minnesota, United States, with 87 years of record.

Key Facts for Ottertail

  • Ottertail (USC00216276) is a weather station in Minnesota, United States at 46.41 latitude and -95.55 longitude, 411 m (1,349 ft) above sea level.
  • The station reports from 1940 to 2026, 87 years of record.
  • 1,464 records set at Ottertail still stand.
  • Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
  • Ottertail set a daily record high maximum temperature of 30.6 C (87.1 F) on 11 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, 46.41 latitude, -95.55 longitude.
  • Elevation: 411 m (1,349 ft).
  • Period of record: 1940 to 2026, 87 years.
  • Eligible elements: tmax, tmin, prcp, snow, snwd.

Daily Record Envelope and 2026

8 days at or beyond a record
Daily record high and record low at Ottertail, with 2026 drawn through them The band shows the record high and record low for each calendar day at Ottertail. The lines show the 2026 daily maximum and minimum. 8 days in 2026 matched or passed a record. Temperatures are in degrees Celsius. -60-40-2002040 JanFebMarAprMayJunJulAugSepOctNovDec
The band shows the record high and record low for each calendar day at Ottertail. The lines show the 2026 daily maximum and minimum. 8 days in 2026 matched or passed a record. Temperatures are in degrees Celsius.
Daily record high and record low at Ottertail, with 2026 drawn through them
MonthHighest record highLowest record low2026 highest maximum2026 lowest minimum
Jan13.3 C (55.9 F)-40.0 C (-40.0 F)7.2 C (45.0 F)-31.7 C (-25.1 F)
Feb15.0 C (59.0 F)-42.8 C (-45.0 F)10.0 C (50.0 F)-26.7 C (-16.1 F)
Mar22.8 C (73.0 F)-36.1 C (-33.0 F)18.9 C (66.0 F)-22.2 C (-8.0 F)
Apr34.4 C (93.9 F)-21.7 C (-7.1 F)30.0 C (86.0 F)-13.9 C (7.0 F)
May34.4 C (93.9 F)-7.8 C (18.0 F)33.3 C (91.9 F)-2.2 C (28.0 F)
Jun36.7 C (98.1 F)0.6 C (33.1 F)30.0 C (86.0 F)8.3 C (46.9 F)
Jul38.9 C (102.0 F)2.8 C (37.0 F)34.4 C (93.9 F)10.6 C (51.1 F)
Aug38.3 C (100.9 F)1.7 C (35.1 F)28.9 C (84.0 F)11.1 C (52.0 F)
Sep36.1 C (97.0 F)-7.2 C (19.0 F)31.1 C (88.0 F)6.1 C (43.0 F)
Oct32.8 C (91.0 F)-12.2 C (10.0 F)30.6 C (87.1 F)4.4 C (39.9 F)
Nov22.2 C (72.0 F)-29.4 C (-20.9 F)n/an/a
Dec13.9 C (57.0 F)-38.9 C (-38.0 F)n/an/a

Which Years Hold Standing Records

1,464 standing records
Standing records at Ottertail by the year they were set 1,464 records at Ottertail still stand. 1988 holds the most, with 46. 02040601961: 171962: 321963: 311964: 281965: 361966: 261967: 291968: 391969: 241970: 221971: 241972: 321973: 231974: 331975: 211976: 411977: 321978: 191979: 241980: 161981: 251982: 151983: 341984: 271985: 231986: 171987: 281988: 461989: 331990: 261991: 391992: 301993: 181994: 171995: 161996: 261997: 221998: 251999: 102000: 272001: 232002: 312008: 22009: 152010: 102011: 162012: 232013: 212014: 212015: 242016: 172017: 252018: 162019: 182020: 232021: 312022: 162023: 232024: 232025: 252026: 8196119681975198219891996200820152022
1,464 records at Ottertail still stand. 1988 holds the most, with 46.
Standing records at Ottertail by the year they were set
Year setStanding records
196117
196232
196331
196428
196536
196626
196729
196839
196924
197022
197124
197232
197323
197433
197521
197641
197732
197819
197924
198016
198125
198215
198334
198427
198523
198617
198728
198846
198933
199026
199139
199230
199318
199417
199516
199626
199722
199825
199910
200027
200123
200231
20082
200915
201010
201116
201223
201321
201421
201524
201617
201725
201816
201918
202023
202131
202216
202323
202423
202525
20268

All-Time Record Progression

3 new records
When Ottertail set new all-time records 3 all-time records were set at Ottertail between 19 June 1979 and 25 June 2022. Each dot is a new record. Record daily precipitationRecord low minimum temperature19 June 1979: Record daily precipitation 111.8 mm (4.4 in)1 February 1996: Record low minimum temperature -42.8 C (-45.0 F)25 June 2022: Record daily precipitation 120.9 mm (4.8 in)19801990200020102020
3 all-time records were set at Ottertail between 19 June 1979 and 25 June 2022. Each dot is a new record.
When Ottertail set new all-time records
DateKindDetail
1979-06-19Record daily precipitationRecord daily precipitation 111.8 mm (4.4 in)
1996-02-01Record low minimum temperatureRecord low minimum temperature -42.8 C (-45.0 F)
2022-06-25Record daily precipitationRecord daily precipitation 120.9 mm (4.8 in)

Wettest Day of Each Month

Jun: 120.9 mm (4.8 in)
Record daily precipitation for each month at Ottertail The wettest day on record for each calendar month at Ottertail. The most was 120.9 mm (4.8 in) on 25 June 2022. 050100150 Jan: 25.4 mm (1.0 in), 7 January 1989 Jan Feb: 20.8 mm (0.8 in), 11 February 2013 Feb Mar: 47.5 mm (1.9 in), 20 March 1982 Mar Apr: 58.9 mm (2.3 in), 8 April 2021 Apr May: 79.2 mm (3.1 in), 27 May 2012 May Jun: 120.9 mm (4.8 in), 25 June 2022 Jun Jul: 97.0 mm (3.8 in), 14 July 1998 Jul Aug: 96.5 mm (3.8 in), 6 August 1972 Aug Sep: 85.9 mm (3.4 in), 6 September 2015 Sep Oct: 92.5 mm (3.6 in), 6 October 1982 Oct Nov: 42.9 mm (1.7 in), 1 November 2000 Nov Dec: 53.3 mm (2.1 in), 3 December 1951 Dec
The wettest day on record for each calendar month at Ottertail. The most was 120.9 mm (4.8 in) on 25 June 2022.
Record daily precipitation for each month at Ottertail
MonthRecord daily precipitation (mm)Date
Jan25.4 mm (1.0 in)7 January 1989
Feb20.8 mm (0.8 in)11 February 2013
Mar47.5 mm (1.9 in)20 March 1982
Apr58.9 mm (2.3 in)8 April 2021
May79.2 mm (3.1 in)27 May 2012
Jun120.9 mm (4.8 in)25 June 2022
Jul97.0 mm (3.8 in)14 July 1998
Aug96.5 mm (3.8 in)6 August 1972
Sep85.9 mm (3.4 in)6 September 2015
Oct92.5 mm (3.6 in)6 October 1982
Nov42.9 mm (1.7 in)1 November 2000
Dec53.3 mm (2.1 in)3 December 1951

Period of Record Coverage

1961 to 2026
Days with data per year at Ottertail 61 years of record at Ottertail, 1961 to 2026. 7 years have data for under 90 percent of days and are left out of rankings: 1961, 2008, 2009, 2010, 2011, 2012, 2026. 1961: 264 of 365 days1962: 348 of 365 days1963: 364 of 365 days1964: 363 of 366 days1965: 363 of 365 days1966: 363 of 365 days1967: 360 of 365 days1968: 362 of 366 days1969: 364 of 365 days1970: 365 of 365 days1971: 364 of 365 days1972: 365 of 366 days1973: 365 of 365 days1974: 363 of 365 days1975: 365 of 365 days1976: 362 of 366 days1977: 361 of 365 days1978: 363 of 365 days1979: 363 of 365 days1980: 365 of 366 days1981: 365 of 365 days1982: 362 of 365 days1983: 361 of 365 days1984: 364 of 366 days1985: 359 of 365 days1986: 361 of 365 days1987: 363 of 365 days1988: 359 of 366 days1989: 362 of 365 days1990: 363 of 365 days1991: 360 of 365 days1992: 366 of 366 days1993: 360 of 365 days1994: 364 of 365 days1995: 362 of 365 days1996: 365 of 366 days1997: 363 of 365 days1998: 363 of 365 days1999: 365 of 365 days2000: 364 of 366 days2001: 357 of 365 days2002: 356 of 365 days2008: 17 of 366 days2009: 150 of 365 days2010: 296 of 365 days2011: 306 of 365 days2012: 318 of 366 days2013: 331 of 365 days2014: 345 of 365 days2015: 343 of 365 days2016: 359 of 366 days2017: 351 of 365 days2018: 345 of 365 days2019: 349 of 365 days2020: 355 of 366 days2021: 356 of 365 days2022: 359 of 365 days2023: 348 of 365 days2024: 358 of 366 days2025: 358 of 365 days2026: 276 of 365 days197019801990200020102020
61 years of record at Ottertail, 1961 to 2026. 7 years have data for under 90 percent of days and are left out of rankings: 1961, 2008, 2009, 2010, 2011, 2012, 2026.
Days with data per year at Ottertail
YearDays with dataShare of yearComplete
196126472%No
196234895%Yes
1963364100%Yes
196436399%Yes
196536399%Yes
196636399%Yes
196736099%Yes
196836299%Yes
1969364100%Yes
1970365100%Yes
1971364100%Yes
1972365100%Yes
1973365100%Yes
197436399%Yes
1975365100%Yes
197636299%Yes
197736199%Yes
197836399%Yes
197936399%Yes
1980365100%Yes
1981365100%Yes
198236299%Yes
198336199%Yes
198436499%Yes
198535998%Yes
198636199%Yes
198736399%Yes
198835998%Yes
198936299%Yes
199036399%Yes
199136099%Yes
1992366100%Yes
199336099%Yes
1994364100%Yes
199536299%Yes
1996365100%Yes
199736399%Yes
199836399%Yes
1999365100%Yes
200036499%Yes
200135798%Yes
200235698%Yes
2008175%No
200915041%No
201029681%No
201130684%No
201231887%No
201333191%Yes
201434595%Yes
201534394%Yes
201635998%Yes
201735196%Yes
201834595%Yes
201934996%Yes
202035597%Yes
202135698%Yes
202235998%Yes
202334895%Yes
202435898%Yes
202535898%Yes
202627676%No

Latest Records

20
Latest records at Ottertail
DateStationRecordValueBeat old record byOld record stoodSignificance
11 October 2026Ottertail, USdaily high max (Provisional)30.6 C (87.1 F)2.8 C (5.0 F)16 years14 of 100 (Routine)
7 September 2026Ottertail, USdaily rain (Provisional)46.2 mm (1.8 in)2.0 mm (0.08 in)24 years17 of 100 (Routine)
27 July 2026Ottertail, USdaily high min (Tie)22.2 C (72.0 F)tie36 years4 of 100 (Routine)
13 July 2026Ottertail, USdaily high min (Tie)23.3 C (73.9 F)tie43 years4 of 100 (Routine)
12 July 2026Ottertail, USdaily high min (Tie)22.2 C (72.0 F)tie60 years6 of 100 (Routine)
7 July 2026Ottertail, USdaily rain41.9 mm (1.6 in)1.8 mm (0.07 in)28 years17 of 100 (Routine)
20 June 2026Ottertail, USdaily low max15.0 C (59.0 F)1.1 C (2.0 F)53 years24 of 100 (Routine)
26 May 2026Ottertail, USdaily high max31.7 C (89.1 F)0.6 C (1.1 F)8 years9 of 100 (Routine)
7 May 2026Ottertail, USdaily low max5.6 C (42.1 F)2.7 C (4.9 F)16 years14 of 100 (Routine)
6 May 2026Ottertail, USdaily low max5.0 C (41.0 F)1.7 C (3.1 F)47 years22 of 100 (Routine)
23 April 2026Ottertail, USdaily high max30.0 C (86.0 F)1.1 C (2.0 F)36 years17 of 100 (Routine)
26 March 2026Ottertail, USdaily high max (Tie)17.2 C (63.0 F)tie57 years5 of 100 (Routine)
21 March 2026Ottertail, USdaily high max14.4 C (57.9 F)1.1 C (2.0 F)4 years8 of 100 (Routine)
10 March 2026Ottertail, USdaily snowfall (Tie)10.2 cm (4.0 in)tie12 years2 of 100 (Routine)
4 March 2026Ottertail, USdaily high min (Tie)-0.6 C (30.9 F)tie43 years4 of 100 (Routine)
19 February 2026Ottertail, USdaily rain8.9 mm (0.35 in)2.8 mm (0.11 in)24 years20 of 100 (Routine)
14 February 2026Ottertail, USdaily high max10.0 C (50.0 F)1.7 C (3.1 F)27 years16 of 100 (Routine)
13 February 2026Ottertail, USdaily high max (Tie)6.1 C (43.0 F)tie43 years4 of 100 (Routine)
24 January 2026Ottertail, USdaily low max-26.1 C (-15.0 F)5.0 C (9.0 F)56 years29 of 100 (Routine)
8 January 2026Ottertail, USdaily high max (Tie)7.2 C (45.0 F)tie24 years3 of 100 (Routine)

Climate Trend

56 complete years, 1962 to 2025
Annual mean temperature at Ottertail as warming stripes, 1962 to 2025 One stripe for each of 56 complete years at Ottertail, 1962 to 2025. Blue stripes are years cooler than the station's own mean of 5.5 C (41.9 F); red stripes are warmer. The coolest year was 1972, at 3.3 C (38.0 F), and the warmest was 1987, at 8.6 C (47.4 F). The strongest colour marks a difference of 3.1 C (5.6 F). 1962: 5.0 C, -0.5 C from the station mean1963: 6.2 C, +0.7 C from the station mean1964: 5.5 C, 0.0 C from the station mean1965: 3.8 C, -1.7 C from the station mean1966: 4.3 C, -1.3 C from the station mean1967: 4.5 C, -1.0 C from the station mean1968: 5.3 C, -0.3 C from the station mean1969: 4.6 C, -0.9 C from the station mean1970: 4.3 C, -1.2 C from the station mean1971: 4.5 C, -1.0 C from the station mean1972: 3.3 C, -2.2 C from the station mean1973: 6.2 C, +0.6 C from the station mean1974: 4.9 C, -0.6 C from the station mean1975: 5.2 C, -0.3 C from the station mean1976: 5.8 C, +0.3 C from the station mean1977: 5.7 C, +0.2 C from the station mean1978: 4.6 C, -1.0 C from the station mean1979: 3.7 C, -1.8 C from the station mean1980: 5.5 C, 0.0 C from the station mean1981: 6.8 C, +1.3 C from the station mean1982: 4.7 C, -0.8 C from the station mean1983: 6.2 C, +0.7 C from the station mean1984: 6.1 C, +0.6 C from the station mean1985: 4.5 C, -1.0 C from the station mean1986: 6.4 C, +0.9 C from the station mean1987: 8.6 C, +3.0 C from the station mean1988: 6.6 C, +1.1 C from the station mean1989: 4.9 C, -0.6 C from the station mean1990: 7.0 C, +1.5 C from the station mean1991: 6.5 C, +1.0 C from the station mean1992: 5.9 C, +0.4 C from the station mean1993: 4.7 C, -0.8 C from the station mean1994: 5.8 C, +0.3 C from the station mean1995: 5.5 C, 0.0 C from the station mean1996: 3.9 C, -1.6 C from the station mean1997: 5.6 C, +0.1 C from the station mean1998: 8.1 C, +2.5 C from the station mean1999: 7.4 C, +1.9 C from the station mean2000: 6.2 C, +0.7 C from the station mean2001: 7.0 C, +1.5 C from the station mean2002: 6.3 C, +0.7 C from the station mean2011: 5.2 C, -0.3 C from the station mean2012: 7.1 C, +1.6 C from the station mean2013: 3.4 C, -2.1 C from the station mean2014: 3.4 C, -2.1 C from the station mean2015: 6.2 C, +0.7 C from the station mean2016: 6.9 C, +1.4 C from the station mean2017: 5.7 C, +0.2 C from the station mean2018: 4.5 C, -1.1 C from the station mean2019: 3.6 C, -2.0 C from the station mean2020: 5.4 C, -0.1 C from the station mean2021: 6.6 C, +1.1 C from the station mean2022: 4.0 C, -1.5 C from the station mean2023: 6.2 C, +0.6 C from the station mean2024: 7.4 C, +1.9 C from the station mean2025: 5.8 C, +0.3 C from the station mean1962197019801990200020102020
One stripe for each of 56 complete years at Ottertail, 1962 to 2025. Blue stripes are years cooler than the station's own mean of 5.5 C (41.9 F); red stripes are warmer. The coolest year was 1972, at 3.3 C (38.0 F), and the warmest was 1987, at 8.6 C (47.4 F). The strongest colour marks a difference of 3.1 C (5.6 F).
Annual mean temperature at Ottertail as warming stripes, 1962 to 2025
YearAnnual mean temperatureDifference from the station mean
19625.0 C-0.48 C
19636.2 C+0.70 C
19645.5 C+0.01 C
19653.8 C-1.69 C
19664.3 C-1.26 C
19674.5 C-0.99 C
19685.3 C-0.27 C
19694.6 C-0.90 C
19704.3 C-1.25 C
19714.5 C-1.05 C
19723.3 C-2.18 C
19736.2 C+0.64 C
19744.9 C-0.61 C
19755.2 C-0.31 C
19765.8 C+0.32 C
19775.7 C+0.15 C
19784.6 C-0.97 C
19793.7 C-1.83 C
19805.5 C+0.02 C
19816.8 C+1.28 C
19824.7 C-0.81 C
19836.2 C+0.66 C
19846.1 C+0.59 C
19854.5 C-1.02 C
19866.4 C+0.88 C
19878.6 C+3.04 C
19886.6 C+1.08 C
19894.9 C-0.65 C
19907.0 C+1.47 C
19916.5 C+1.01 C
19925.9 C+0.39 C
19934.7 C-0.83 C
19945.8 C+0.30 C
19955.5 C-0.03 C
19963.9 C-1.65 C
19975.6 C+0.12 C
19988.1 C+2.53 C
19997.4 C+1.87 C
20006.2 C+0.67 C
20017.0 C+1.45 C
20026.3 C+0.74 C
20115.2 C-0.31 C
20127.1 C+1.55 C
20133.4 C-2.13 C
20143.4 C-2.11 C
20156.2 C+0.71 C
20166.9 C+1.37 C
20175.7 C+0.17 C
20184.5 C-1.06 C
20193.6 C-1.96 C
20205.4 C-0.08 C
20216.6 C+1.10 C
20224.0 C-1.48 C
20236.2 C+0.63 C
20247.4 C+1.88 C
20255.8 C+0.31 C

The fitted trend in annual mean temperature here over 1962 to 2025 is 0.12 C (-0.05 to 0.29) per decade. The interval includes zero, so the trend is not clearly different from zero. In Fahrenheit: 0.2 F (-0.1 to 0.5) per decade. The slope is a straight line fitted to 56 complete years; the brackets give its 95 percent interval.

Fitted temperature trends per decade at Ottertail
MeasurePer decade (C)Per decade (F)PeriodComplete yearsReading
Annual mean temperature0.12 C (-0.05 to 0.29) per decade0.2 F (-0.1 to 0.5) per decade1962 to 202556Not clearly different from zero
Mean daily maximum-0.04 C (-0.21 to 0.13) per decade-0.1 F (-0.4 to 0.2) per decade1962 to 202556Not clearly different from zero
Mean daily minimum0.3 C (0.1 to 0.5) per decade0.5 F (0.2 to 0.8) per decade1962 to 202556Rise

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

1940 to 2026
Yearly extremes at Ottertail: the record and the median year
MeasureRecordYear of the recordMedian yearYears with a value
Hottest day (TXx)38.9 C (102.0 F)198834.4 C (93.9 F)61
Coldest night (TNn)-42.8 C (-45.0 F)1996-34.4 C (-29.9 F)61
Wettest day (Rx1day)120.9 mm (4.8 in)202256.1 mm (2.2 in)82
Wettest five days (Rx5day)195.6 mm (7.7 in)194685.2 mm (3.4 in)82
Longest dry spell (CDD)52 days198324 days82

Hottest day (TXx)

Hottest day (TXx) at Ottertail by year The hottest day of the year at Ottertail, 1940 to 2026. The record is 38.9 C (102.0 F) in 1988, marked on the chart; the median year is 34.4 C (93.9 F). 01020304019401960198020002020Record: 38.9 C (102.0 F) in 1988
The hottest day of the year at Ottertail, 1940 to 2026. The record is 38.9 C (102.0 F) in 1988, marked on the chart; the median year is 34.4 C (93.9 F).
Hottest day (TXx) at Ottertail by year
YearHottest day (TXx)
1940n/a
1941n/a
1942n/a
1943n/a
1944n/a
1945n/a
1946n/a
1947n/a
1948n/a
1949n/a
1950n/a
1951n/a
1952n/a
1953n/a
1954n/a
1955n/a
1956n/a
1957n/a
1958n/a
1959n/a
1960n/a
196135.6 C (96.1 F)
196231.1 C (88.0 F)
196334.4 C (93.9 F)
196436.1 C (97.0 F)
196536.1 C (97.0 F)
196633.3 C (91.9 F)
196732.8 C (91.0 F)
196835.0 C (95.0 F)
196934.4 C (93.9 F)
197036.1 C (97.0 F)
197135.0 C (95.0 F)
197232.8 C (91.0 F)
197334.4 C (93.9 F)
197437.2 C (99.0 F)
197536.7 C (98.1 F)
197638.3 C (100.9 F)
197735.6 C (96.1 F)
197835.6 C (96.1 F)
197936.7 C (98.1 F)
198037.8 C (100.0 F)
198132.8 C (91.0 F)
198233.9 C (93.0 F)
198336.1 C (97.0 F)
198435.0 C (95.0 F)
198533.3 C (91.9 F)
198632.8 C (91.0 F)
198735.0 C (95.0 F)
198838.9 C (102.0 F)
198935.0 C (95.0 F)
199033.9 C (93.0 F)
199133.9 C (93.0 F)
199231.7 C (89.1 F)
199331.7 C (89.1 F)
199434.4 C (93.9 F)
199535.0 C (95.0 F)
199634.4 C (93.9 F)
199732.8 C (91.0 F)
199833.3 C (91.9 F)
199935.6 C (96.1 F)
200032.8 C (91.0 F)
200134.4 C (93.9 F)
200235.6 C (96.1 F)
20084.4 C (39.9 F)
200929.4 C (84.9 F)
201032.2 C (90.0 F)
201133.3 C (91.9 F)
201233.9 C (93.0 F)
201333.3 C (91.9 F)
201431.7 C (89.1 F)
201532.2 C (90.0 F)
201632.2 C (90.0 F)
201731.7 C (89.1 F)
201832.2 C (90.0 F)
201931.1 C (88.0 F)
202032.2 C (90.0 F)
202135.6 C (96.1 F)
202234.4 C (93.9 F)
202335.0 C (95.0 F)
202430.6 C (87.1 F)
202532.2 C (90.0 F)
202634.4 C (93.9 F)

Coldest night (TNn)

Coldest night (TNn) at Ottertail by year The coldest night of the year at Ottertail, 1940 to 2026. The record is -42.8 C (-45.0 F) in 1996, marked on the chart; the median year is -34.4 C (-29.9 F). -45-40-35-30-25-2019401960198020002020Record: -42.8 C (-45.0 F) in 1996
The coldest night of the year at Ottertail, 1940 to 2026. The record is -42.8 C (-45.0 F) in 1996, marked on the chart; the median year is -34.4 C (-29.9 F).
Coldest night (TNn) at Ottertail by year
YearColdest night (TNn)
1940n/a
1941n/a
1942n/a
1943n/a
1944n/a
1945n/a
1946n/a
1947n/a
1948n/a
1949n/a
1950n/a
1951n/a
1952n/a
1953n/a
1954n/a
1955n/a
1956n/a
1957n/a
1958n/a
1959n/a
1960n/a
1961-31.7 C (-25.1 F)
1962-36.7 C (-34.1 F)
1963-34.4 C (-29.9 F)
1964-30.0 C (-22.0 F)
1965-38.3 C (-36.9 F)
1966-38.3 C (-36.9 F)
1967-36.7 C (-34.1 F)
1968-38.9 C (-38.0 F)
1969-33.9 C (-29.0 F)
1970-40.0 C (-40.0 F)
1971-36.7 C (-34.1 F)
1972-40.0 C (-40.0 F)
1973-37.2 C (-35.0 F)
1974-35.6 C (-32.1 F)
1975-31.7 C (-25.1 F)
1976-34.4 C (-29.9 F)
1977-38.9 C (-38.0 F)
1978-34.4 C (-29.9 F)
1979-37.2 C (-35.0 F)
1980-33.9 C (-29.0 F)
1981-33.3 C (-27.9 F)
1982-40.6 C (-41.1 F)
1983-38.9 C (-38.0 F)
1984-37.8 C (-36.0 F)
1985-36.7 C (-34.1 F)
1986-33.3 C (-27.9 F)
1987-33.3 C (-27.9 F)
1988-36.7 C (-34.1 F)
1989-39.4 C (-38.9 F)
1990-35.0 C (-31.0 F)
1991-31.7 C (-25.1 F)
1992-32.2 C (-26.0 F)
1993-32.2 C (-26.0 F)
1994-39.4 C (-38.9 F)
1995-29.4 C (-20.9 F)
1996-42.8 C (-45.0 F)
1997-36.1 C (-33.0 F)
1998-31.1 C (-24.0 F)
1999-31.7 C (-25.1 F)
2000-30.6 C (-23.1 F)
2001-33.3 C (-27.9 F)
2002-24.4 C (-11.9 F)
2008-32.8 C (-27.0 F)
2009-36.7 C (-34.1 F)
2010-36.1 C (-33.0 F)
2011-36.7 C (-34.1 F)
2012-28.3 C (-18.9 F)
2013-32.8 C (-27.0 F)
2014-33.3 C (-27.9 F)
2015-31.7 C (-25.1 F)
2016-33.3 C (-27.9 F)
2017-34.4 C (-29.9 F)
2018-32.8 C (-27.0 F)
2019-40.0 C (-40.0 F)
2020-32.2 C (-26.0 F)
2021-36.1 C (-33.0 F)
2022-37.2 C (-35.0 F)
2023-31.1 C (-24.0 F)
2024-28.9 C (-20.0 F)
2025-33.3 C (-27.9 F)
2026-31.7 C (-25.1 F)

Wettest day (Rx1day)

Wettest day (Rx1day) at Ottertail by year The wettest day of the year at Ottertail, 1940 to 2026. The record is 120.9 mm (4.8 in) in 2022, marked on the chart; the median year is 56.1 mm (2.2 in). 05010015019401960198020002020Record: 120.9 mm (4.8 in) in 2022
The wettest day of the year at Ottertail, 1940 to 2026. The record is 120.9 mm (4.8 in) in 2022, marked on the chart; the median year is 56.1 mm (2.2 in).
Wettest day (Rx1day) at Ottertail by year
YearWettest day (Rx1day)
194058.4 mm (2.3 in)
194150.8 mm (2.0 in)
194257.2 mm (2.3 in)
194348.3 mm (1.9 in)
194448.3 mm (1.9 in)
194554.6 mm (2.1 in)
194696.5 mm (3.8 in)
194736.8 mm (1.4 in)
194825.4 mm (1.0 in)
194943.9 mm (1.7 in)
195075.4 mm (3.0 in)
195154.1 mm (2.1 in)
195249.8 mm (2.0 in)
195351.1 mm (2.0 in)
195438.1 mm (1.5 in)
195583.8 mm (3.3 in)
195657.9 mm (2.3 in)
195761.0 mm (2.4 in)
195859.9 mm (2.4 in)
195961.5 mm (2.4 in)
196050.5 mm (2.0 in)
196139.9 mm (1.6 in)
196260.2 mm (2.4 in)
196391.4 mm (3.6 in)
196482.8 mm (3.3 in)
196540.9 mm (1.6 in)
196659.9 mm (2.4 in)
196742.2 mm (1.7 in)
196877.0 mm (3.0 in)
196964.8 mm (2.6 in)
197036.6 mm (1.4 in)
197136.1 mm (1.4 in)
197296.5 mm (3.8 in)
197373.7 mm (2.9 in)
197442.9 mm (1.7 in)
197548.8 mm (1.9 in)
197637.1 mm (1.5 in)
197763.8 mm (2.5 in)
197848.3 mm (1.9 in)
1979111.8 mm (4.4 in)
198043.7 mm (1.7 in)
198143.7 mm (1.7 in)
198292.5 mm (3.6 in)
198366.5 mm (2.6 in)
198459.4 mm (2.3 in)
198563.0 mm (2.5 in)
198651.6 mm (2.0 in)
198745.2 mm (1.8 in)
198857.7 mm (2.3 in)
198940.4 mm (1.6 in)
199032.8 mm (1.3 in)
199139.1 mm (1.5 in)
199242.9 mm (1.7 in)
199357.9 mm (2.3 in)
199440.6 mm (1.6 in)
199555.1 mm (2.2 in)
199639.1 mm (1.5 in)
199727.9 mm (1.1 in)
199897.0 mm (3.8 in)
199955.6 mm (2.2 in)
200067.6 mm (2.7 in)
200144.2 mm (1.7 in)
200261.0 mm (2.4 in)
200814.0 mm (0.6 in)
200952.1 mm (2.1 in)
201044.7 mm (1.8 in)
201145.7 mm (1.8 in)
201279.2 mm (3.1 in)
201383.8 mm (3.3 in)
201457.2 mm (2.3 in)
201585.9 mm (3.4 in)
201657.2 mm (2.3 in)
201756.6 mm (2.2 in)
201877.5 mm (3.1 in)
201971.6 mm (2.8 in)
202072.4 mm (2.9 in)
202163.8 mm (2.5 in)
2022120.9 mm (4.8 in)
202364.0 mm (2.5 in)
202445.0 mm (1.8 in)
202577.5 mm (3.1 in)
202646.2 mm (1.8 in)

Wettest five days (Rx5day)

Wettest five days (Rx5day) at Ottertail by year The wettest five days of the year at Ottertail, 1940 to 2026. The record is 195.6 mm (7.7 in) in 1946, marked on the chart; the median year is 85.2 mm (3.4 in). 05010015020019401960198020002020Record: 195.6 mm (7.7 in) in 1946
The wettest five days of the year at Ottertail, 1940 to 2026. The record is 195.6 mm (7.7 in) in 1946, marked on the chart; the median year is 85.2 mm (3.4 in).
Wettest five days (Rx5day) at Ottertail by year
YearWettest five days (Rx5day)
194088.9 mm (3.5 in)
194170.1 mm (2.8 in)
194294.1 mm (3.7 in)
194396.6 mm (3.8 in)
194465.6 mm (2.6 in)
194588.9 mm (3.5 in)
1946195.6 mm (7.7 in)
194755.7 mm (2.2 in)
194838.9 mm (1.5 in)
194995.9 mm (3.8 in)
195082.5 mm (3.2 in)
195167.1 mm (2.6 in)
195297.1 mm (3.8 in)
195376.5 mm (3.0 in)
195477.8 mm (3.1 in)
1955142.2 mm (5.6 in)
195672.9 mm (2.9 in)
195786.6 mm (3.4 in)
195868.0 mm (2.7 in)
195977.3 mm (3.0 in)
196083.6 mm (3.3 in)
196154.9 mm (2.2 in)
196286.8 mm (3.4 in)
1963102.8 mm (4.0 in)
196491.9 mm (3.6 in)
196581.1 mm (3.2 in)
196689.1 mm (3.5 in)
196744.4 mm (1.7 in)
1968118.4 mm (4.7 in)
196979.9 mm (3.1 in)
197066.3 mm (2.6 in)
197183.6 mm (3.3 in)
1972115.8 mm (4.6 in)
1973105.4 mm (4.1 in)
197479.2 mm (3.1 in)
197571.7 mm (2.8 in)
197661.7 mm (2.4 in)
197785.7 mm (3.4 in)
197848.3 mm (1.9 in)
1979133.6 mm (5.3 in)
198070.8 mm (2.8 in)
198192.7 mm (3.6 in)
1982124.0 mm (4.9 in)
1983104.7 mm (4.1 in)
1984117.6 mm (4.6 in)
1985124.7 mm (4.9 in)
198674.0 mm (2.9 in)
198777.5 mm (3.1 in)
198895.5 mm (3.8 in)
1989109.2 mm (4.3 in)
199053.4 mm (2.1 in)
199181.5 mm (3.2 in)
199287.4 mm (3.4 in)
199378.9 mm (3.1 in)
199483.0 mm (3.3 in)
1995104.6 mm (4.1 in)
199655.1 mm (2.2 in)
199768.5 mm (2.7 in)
1998109.2 mm (4.3 in)
199983.4 mm (3.3 in)
200098.6 mm (3.9 in)
200154.1 mm (2.1 in)
2002110.5 mm (4.4 in)
200819.1 mm (0.8 in)
200958.2 mm (2.3 in)
201084.7 mm (3.3 in)
201152.2 mm (2.1 in)
201295.3 mm (3.8 in)
2013101.4 mm (4.0 in)
2014111.1 mm (4.4 in)
201588.7 mm (3.5 in)
2016145.4 mm (5.7 in)
201792.2 mm (3.6 in)
201883.8 mm (3.3 in)
201985.9 mm (3.4 in)
2020136.4 mm (5.4 in)
202187.2 mm (3.4 in)
2022165.0 mm (6.5 in)
202376.2 mm (3.0 in)
202459.7 mm (2.4 in)
202596.3 mm (3.8 in)
202672.9 mm (2.9 in)

Longest dry spell (CDD)

Longest dry spell (CDD) at Ottertail by year The longest dry spell of the year at Ottertail, 1940 to 2026. The record is 52 days in 1983, marked on the chart; the median year is 24 days. 020406019401960198020002020Record: 52 days in 1983
The longest dry spell of the year at Ottertail, 1940 to 2026. The record is 52 days in 1983, marked on the chart; the median year is 24 days.
Longest dry spell (CDD) at Ottertail by year
YearLongest dry spell (CDD)
194016 days
194136 days
194246 days
194323 days
194427 days
194512 days
194618 days
194724 days
194820 days
194925 days
195041 days
195118 days
195234 days
195324 days
195430 days
195524 days
195632 days
195739 days
195831 days
195932 days
196029 days
196133 days
196218 days
196323 days
196423 days
196522 days
196621 days
196725 days
196834 days
196916 days
197032 days
197119 days
197228 days
197321 days
197443 days
197523 days
197631 days
197719 days
197835 days
197924 days
198043 days
198129 days
198227 days
198352 days
198428 days
198524 days
198629 days
198721 days
198833 days
198928 days
199030 days
199120 days
199227 days
199319 days
199422 days
199528 days
199623 days
199724 days
199831 days
199945 days
200010 days
200129 days
200249 days
200816 days
200914 days
201026 days
201124 days
201218 days
201315 days
201417 days
201514 days
201618 days
201721 days
201827 days
201922 days
202022 days
202127 days
202219 days
202317 days
202429 days
202534 days
202622 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

56 years with a frost

Across 56 years with a frost, the median last spring frost at Ottertail falls on 7 May and the median first autumn frost on 3 October, which leaves a median of 147 days between them.

Fitted over all years, the growing season changes by +4.5 days per decade at this station.

Frost dates and growing season at Ottertail
MeasureMedian, all yearsEarliest periodRecent period (1988 to 2025)Recent against earliestFitted trend
Last spring frost7 Mayn/a6 Mayn/a-1.2 days per decade
First autumn frost3 Octobern/a6 Octobern/a+3.3 days per decade
Growing days147 daysn/a155 daysn/a+4.5 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

74 years, 1941 to 2025

A day with at least 55.4 mm (2.2 in) of rain is expected about once in 2 years. A day with at least 123.8 mm (4.9 in) of rain is expected about once in 100 years.

Rainfall return levels at Ottertail: the daily rain expected about once in a given number of years
Expected about once inA day with at leastNote
2 years55.4 mm (2.2 in)
5 years73.1 mm (2.9 in)
10 years85.0 mm (3.3 in)
25 years100.4 mm (4.0 in)
50 years112.0 mm (4.4 in)
100 years123.8 mm (4.9 in)Longer than the 74 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, 74 years of values from 1941 to 2025.

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: 120.9 mm (4.8 in) in 2022; 111.8 mm (4.4 in) in 1979; 97.0 mm (3.8 in) in 1998.

Station Changes

No change in the annual mean temperature of this station was found against its neighbours.

Climate Twins

2011 to 2025 against 1961 to 1990

Over 2011 to 2025, Ottertail had a mean temperature of 5.4 C (41.8 F) and 750.2 mm (29.5 in) of rain a year. The 3 stations whose 1961 to 1990 climate was closest to that are Arnprior Grandon (Canada, 1,484 km away), Milaca (United States, 163 km away) and Chenaux (Canada, 1,457 km away).

Climate twins of Ottertail: stations whose 1961 to 1990 climate is closest to its 2011 to 2025 climate
Twin stationCountryDistance awayMean temperature, 1961-1990Rain a year, 1961-1990Climate difference
Arnprior GrandonCanada1,484 km (922 mi)5.2 C (41.4 F)760.3 mm (29.9 in)1.05
MilacaUnited States163 km (101 mi)5.3 C (41.5 F)733.2 mm (28.9 in)1.05
ChenauxCanada1,457 km (905 mi)5.5 C (41.9 F)820.5 mm (32.3 in)1.07

Twins are stations, not cities. A twin is one of the three stations at least 100 km away whose earlier climate is closest to this station's recent one, so a close match does not mean the two places look alike in other ways. A station move or a gap in a record can change that station's averages. The list describes past climate; it is not a forecast and does not say what caused any change. How twins are found, and a search for any station.

Download the Data

  • Data for Ottertail standing records by year: CSV or JSON. Field meanings are on the data page.
  • Data for Ottertail 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 2026-10-15 (15 October 2026). Records are computed by this site and are not official.

Data as of . Last revised (2026-10-15).