Built 2026-10-17 (17 October 2026)

Mott Is Isle Royale Weather Records (USC00205637)

Record envelope, standing records and threshold days for Mott Is Isle Royale (USC00205637), Michigan, United States, with 80 years of record.

Key Facts for Mott Is Isle Royale

  • Mott Is Isle Royale (USC00205637) is a weather station in Michigan, United States at 48.11 latitude and -88.55 longitude, 186 m (610 ft) above sea level.
  • The station reports from 1940 to 2019, 80 years of record.
  • 1,460 records set at Mott Is Isle Royale still stand.
  • Records are tracked for no element yet: an element needs 30 years of data to be eligible.

About the Station

  • Location: Michigan, United States, 48.11 latitude, -88.55 longitude.
  • Elevation: 186 m (610 ft).
  • Period of record: 1940 to 2019, 80 years.
  • Eligible elements: none yet.

Daily Record Envelope and 2026

0 days at or beyond a record
Daily record high and record low at Mott Is Isle Royale, with 2026 drawn through them The band shows the record high and record low for each calendar day at Mott Is Isle Royale. The lines show the 2026 daily maximum and minimum. 0 days in 2026 matched or passed a record. Temperatures are in degrees Celsius. -40-2002040 JanFebMarAprMayJunJulAugSepOctNovDec
The band shows the record high and record low for each calendar day at Mott Is Isle Royale. The lines show the 2026 daily maximum and minimum. 0 days in 2026 matched or passed a record. Temperatures are in degrees Celsius.
Daily record high and record low at Mott Is Isle Royale, with 2026 drawn through them
MonthHighest record highLowest record low2026 highest maximum2026 lowest minimum
Jan6.7 C (44.1 F)-32.8 C (-27.0 F)n/an/a
Feb5.0 C (41.0 F)-28.9 C (-20.0 F)n/an/a
Mar9.4 C (48.9 F)-33.9 C (-29.0 F)n/an/a
Apr24.4 C (75.9 F)-13.9 C (7.0 F)n/an/a
May28.9 C (84.0 F)-8.3 C (17.1 F)n/an/a
Jun32.8 C (91.0 F)-1.1 C (30.0 F)n/an/a
Jul33.9 C (93.0 F)0.6 C (33.1 F)n/an/a
Aug34.4 C (93.9 F)0.0 C (32.0 F)n/an/a
Sep30.0 C (86.0 F)-3.9 C (25.0 F)n/an/a
Oct22.2 C (72.0 F)-11.1 C (12.0 F)n/an/a
Nov16.7 C (62.1 F)-13.9 C (7.0 F)n/an/a
Dec9.4 C (48.9 F)-22.2 C (-8.0 F)n/an/a

Which Years Hold Standing Records

1,460 standing records
Standing records at Mott Is Isle Royale by the year they were set 1,460 records at Mott Is Isle Royale still stand. 1942 holds the most, with 224. 01002003001940: 481941: 2131942: 2241943: 1771944: 511945: 331946: 271947: 311948: 161949: 141950: 501951: 161952: 151953: 181954: 41955: 131956: 181957: 101958: 121959: 71960: 31961: 91962: 61963: 361964: 181965: 111966: 101967: 141968: 91969: 111970: 91971: 81972: 171973: 41974: 141975: 81976: 141977: 61978: 41979: 41980: 21981: 91982: 41983: 141984: 31985: 131986: 111987: 101988: 111989: 51990: 31991: 171992: 21993: 11995: 121996: 61997: 41998: 261999: 102000: 112001: 122002: 92004: 52007: 42009: 42011: 22013: 92014: 22015: 92016: 142017: 12018: 12019: 21940194819561964197219801988199720092019
1,460 records at Mott Is Isle Royale still stand. 1942 holds the most, with 224.
Standing records at Mott Is Isle Royale by the year they were set
Year setStanding records
194048
1941213
1942224
1943177
194451
194533
194627
194731
194816
194914
195050
195116
195215
195318
19544
195513
195618
195710
195812
19597
19603
19619
19626
196336
196418
196511
196610
196714
19689
196911
19709
19718
197217
19734
197414
19758
197614
19776
19784
19794
19802
19819
19824
198314
19843
198513
198611
198710
198811
19895
19903
199117
19922
19931
199512
19966
19974
199826
199910
200011
200112
20029
20045
20074
20094
20112
20139
20142
20159
201614
20171
20181
20192

Wettest Day of Each Month

Sep: 113.8 mm (4.5 in)
Record daily precipitation for each month at Mott Is Isle Royale The wettest day on record for each calendar month at Mott Is Isle Royale. The most was 113.8 mm (4.5 in) on 5 September 1946. 050100150 Jan: 18.3 mm (0.7 in), 24 January 1943 Jan Feb: 20.1 mm (0.8 in), 10 February 1943 Feb Mar: 47.8 mm (1.9 in), 21 March 1942 Mar Apr: 24.1 mm (0.9 in), 4 April 1946 Apr May: 65.0 mm (2.6 in), 21 May 1953 May Jun: 81.3 mm (3.2 in), 29 June 1996 Jun Jul: 58.9 mm (2.3 in), 28 July 1944 Jul Aug: 75.7 mm (3.0 in), 14 August 1996 Aug Sep: 113.8 mm (4.5 in), 5 September 1946 Sep Oct: 50.8 mm (2.0 in), 20 October 1940 Oct Nov: 38.4 mm (1.5 in), 6 November 1956 Nov Dec: 16.3 mm (0.6 in), 1 December 1945 Dec
The wettest day on record for each calendar month at Mott Is Isle Royale. The most was 113.8 mm (4.5 in) on 5 September 1946.
Record daily precipitation for each month at Mott Is Isle Royale
MonthRecord daily precipitation (mm)Date
Jan18.3 mm (0.7 in)24 January 1943
Feb20.1 mm (0.8 in)10 February 1943
Mar47.8 mm (1.9 in)21 March 1942
Apr24.1 mm (0.9 in)4 April 1946
May65.0 mm (2.6 in)21 May 1953
Jun81.3 mm (3.2 in)29 June 1996
Jul58.9 mm (2.3 in)28 July 1944
Aug75.7 mm (3.0 in)14 August 1996
Sep113.8 mm (4.5 in)5 September 1946
Oct50.8 mm (2.0 in)20 October 1940
Nov38.4 mm (1.5 in)6 November 1956
Dec16.3 mm (0.6 in)1 December 1945

Period of Record Coverage

1940 to 2019
Days with data per year at Mott Is Isle Royale 75 years of record at Mott Is Isle Royale, 1940 to 2019. 72 years have data for under 90 percent of days and are left out of rankings: 1940, 1944, 1945, 1946, 1947, 1948, 1949, 1950 and others. 1940: 88 of 366 days1941: 360 of 365 days1942: 363 of 365 days1943: 348 of 365 days1944: 245 of 366 days1945: 217 of 365 days1946: 236 of 365 days1947: 213 of 365 days1948: 131 of 366 days1949: 206 of 365 days1950: 195 of 365 days1951: 172 of 365 days1952: 197 of 366 days1953: 195 of 365 days1954: 172 of 365 days1955: 183 of 365 days1956: 190 of 366 days1957: 162 of 365 days1958: 122 of 365 days1959: 122 of 365 days1960: 119 of 366 days1961: 174 of 365 days1962: 178 of 365 days1963: 159 of 365 days1964: 178 of 366 days1965: 177 of 365 days1966: 164 of 365 days1967: 170 of 365 days1968: 145 of 366 days1969: 155 of 365 days1970: 165 of 365 days1971: 148 of 365 days1972: 178 of 366 days1973: 137 of 365 days1974: 168 of 365 days1975: 170 of 365 days1976: 177 of 366 days1977: 153 of 365 days1978: 153 of 365 days1979: 140 of 365 days1980: 43 of 366 days1981: 155 of 365 days1982: 108 of 365 days1983: 133 of 365 days1984: 155 of 366 days1985: 137 of 365 days1986: 155 of 365 days1987: 147 of 365 days1988: 172 of 366 days1989: 152 of 365 days1990: 105 of 365 days1991: 148 of 365 days1992: 118 of 366 days1993: 139 of 365 days1995: 136 of 365 days1996: 133 of 366 days1997: 147 of 365 days1998: 110 of 365 days1999: 135 of 365 days2000: 80 of 366 days2001: 124 of 365 days2002: 102 of 365 days2003: 30 of 365 days2004: 149 of 366 days2007: 34 of 365 days2009: 5 of 365 days2011: 25 of 365 days2012: 19 of 366 days2013: 89 of 365 days2014: 82 of 365 days2015: 82 of 365 days2016: 59 of 366 days2017: 59 of 365 days2018: 25 of 365 days2019: 49 of 365 days1940195019601970198019902000
75 years of record at Mott Is Isle Royale, 1940 to 2019. 72 years have data for under 90 percent of days and are left out of rankings: 1940, 1944, 1945, 1946, 1947, 1948, 1949, 1950 and others.
Days with data per year at Mott Is Isle Royale
YearDays with dataShare of yearComplete
19408824%No
194136099%Yes
194236399%Yes
194334895%Yes
194424567%No
194521759%No
194623665%No
194721358%No
194813136%No
194920656%No
195019553%No
195117247%No
195219754%No
195319553%No
195417247%No
195518350%No
195619052%No
195716244%No
195812233%No
195912233%No
196011933%No
196117448%No
196217849%No
196315944%No
196417849%No
196517748%No
196616445%No
196717047%No
196814540%No
196915542%No
197016545%No
197114841%No
197217849%No
197313738%No
197416846%No
197517047%No
197617748%No
197715342%No
197815342%No
197914038%No
19804312%No
198115542%No
198210830%No
198313336%No
198415542%No
198513738%No
198615542%No
198714740%No
198817247%No
198915242%No
199010529%No
199114841%No
199211832%No
199313938%No
199513637%No
199613336%No
199714740%No
199811030%No
199913537%No
20008022%No
200112434%No
200210228%No
2003308%No
200414941%No
2007349%No
200951%No
2011257%No
2012195%No
20138924%No
20148222%No
20158222%No
20165916%No
20175916%No
2018257%No
20194913%No

Latest Records

0

No records were set at this station in the latest data.

Extremes by Year

1940 to 2019
Yearly extremes at Mott Is Isle Royale: the record and the median year
MeasureRecordYear of the recordMedian yearYears with a value
Hottest day (TXx)34.4 C (93.9 F)198328.9 C (84.0 F)75
Coldest night (TNn)-33.9 C (-29.0 F)1943-2.8 C (27.0 F)75
Wettest day (Rx1day)113.8 mm (4.5 in)194638.6 mm (1.5 in)75
Wettest five days (Rx5day)122.5 mm (4.8 in)197757.7 mm (2.3 in)74
Longest dry spell (CDD)36 days194314 days74

Hottest day (TXx)

Hottest day (TXx) at Mott Is Isle Royale by year The hottest day of the year at Mott Is Isle Royale, 1940 to 2019. The record is 34.4 C (93.9 F) in 1983, marked on the chart; the median year is 28.9 C (84.0 F). 15202530351940196019802000Record: 34.4 C (93.9 F) in 1983
The hottest day of the year at Mott Is Isle Royale, 1940 to 2019. The record is 34.4 C (93.9 F) in 1983, marked on the chart; the median year is 28.9 C (84.0 F).
Hottest day (TXx) at Mott Is Isle Royale by year
YearHottest day (TXx)
194015.0 C (59.0 F)
194130.0 C (86.0 F)
194228.9 C (84.0 F)
194326.7 C (80.1 F)
194426.1 C (79.0 F)
194530.6 C (87.1 F)
194626.7 C (80.1 F)
194729.4 C (84.9 F)
194830.6 C (87.1 F)
194930.0 C (86.0 F)
195024.4 C (75.9 F)
195127.8 C (82.0 F)
195227.8 C (82.0 F)
195327.8 C (82.0 F)
195429.4 C (84.9 F)
195530.0 C (86.0 F)
195630.6 C (87.1 F)
195728.3 C (82.9 F)
195828.3 C (82.9 F)
195929.4 C (84.9 F)
196026.1 C (79.0 F)
196126.1 C (79.0 F)
196225.0 C (77.0 F)
196331.1 C (88.0 F)
196428.9 C (84.0 F)
196528.9 C (84.0 F)
196631.7 C (89.1 F)
196725.6 C (78.1 F)
196827.8 C (82.0 F)
196928.9 C (84.0 F)
197029.4 C (84.9 F)
197128.3 C (82.9 F)
197227.8 C (82.0 F)
197328.3 C (82.9 F)
197428.3 C (82.9 F)
197527.8 C (82.0 F)
197632.8 C (91.0 F)
197726.7 C (80.1 F)
197827.8 C (82.0 F)
197926.7 C (80.1 F)
198027.2 C (81.0 F)
198129.4 C (84.9 F)
198226.7 C (80.1 F)
198334.4 C (93.9 F)
198428.3 C (82.9 F)
198527.2 C (81.0 F)
198628.9 C (84.0 F)
198728.9 C (84.0 F)
198833.9 C (93.0 F)
198929.4 C (84.9 F)
199028.3 C (82.9 F)
199131.7 C (89.1 F)
199226.7 C (80.1 F)
199327.8 C (82.0 F)
199530.0 C (86.0 F)
199629.4 C (84.9 F)
199727.8 C (82.0 F)
199832.2 C (90.0 F)
199931.7 C (89.1 F)
200031.1 C (88.0 F)
200133.9 C (93.0 F)
200232.8 C (91.0 F)
200326.7 C (80.1 F)
200427.8 C (82.0 F)
200729.4 C (84.9 F)
200920.6 C (69.1 F)
201130.0 C (86.0 F)
201228.9 C (84.0 F)
201330.6 C (87.1 F)
201427.8 C (82.0 F)
201530.0 C (86.0 F)
201631.7 C (89.1 F)
201730.6 C (87.1 F)
201827.8 C (82.0 F)
201928.3 C (82.9 F)

Coldest night (TNn)

Coldest night (TNn) at Mott Is Isle Royale by year The coldest night of the year at Mott Is Isle Royale, 1940 to 2019. The record is -33.9 C (-29.0 F) in 1943, marked on the chart; the median year is -2.8 C (27.0 F). -40-200201940196019802000Record: -33.9 C (-29.0 F) in 1943
The coldest night of the year at Mott Is Isle Royale, 1940 to 2019. The record is -33.9 C (-29.0 F) in 1943, marked on the chart; the median year is -2.8 C (27.0 F).
Coldest night (TNn) at Mott Is Isle Royale by year
YearColdest night (TNn)
1940-20.0 C (-4.0 F)
1941-28.3 C (-18.9 F)
1942-30.6 C (-23.1 F)
1943-33.9 C (-29.0 F)
1944-20.6 C (-5.1 F)
1945-20.6 C (-5.1 F)
1946-12.8 C (9.0 F)
1947-13.9 C (7.0 F)
1948-1.7 C (28.9 F)
1949-10.0 C (14.0 F)
1950-12.2 C (10.0 F)
1951-7.8 C (18.0 F)
1952-11.1 C (12.0 F)
1953-5.0 C (23.0 F)
1954-6.1 C (21.0 F)
1955-2.2 C (28.0 F)
1956-7.2 C (19.0 F)
1957-3.9 C (25.0 F)
19581.1 C (34.0 F)
19592.2 C (36.0 F)
1960-3.9 C (25.0 F)
1961-3.3 C (26.1 F)
1962-5.0 C (23.0 F)
1963-2.2 C (28.0 F)
1964-2.2 C (28.0 F)
1965-4.4 C (24.1 F)
1966-5.6 C (21.9 F)
1967-5.0 C (23.0 F)
1968-1.7 C (28.9 F)
1969-4.4 C (24.1 F)
1970-1.1 C (30.0 F)
1971-1.1 C (30.0 F)
1972-6.1 C (21.0 F)
1973-2.2 C (28.0 F)
1974-7.8 C (18.0 F)
1975-1.7 C (28.9 F)
1976-4.4 C (24.1 F)
1977-4.4 C (24.1 F)
1978-8.3 C (17.1 F)
1979-2.8 C (27.0 F)
1980-2.2 C (28.0 F)
1981-5.0 C (23.0 F)
19820.6 C (33.1 F)
1983-2.8 C (27.0 F)
19840.6 C (33.1 F)
1985-0.6 C (30.9 F)
1986-5.0 C (23.0 F)
1987-1.7 C (28.9 F)
1988-1.1 C (30.0 F)
1989-3.3 C (26.1 F)
19901.7 C (35.1 F)
1991-3.9 C (25.0 F)
1992-0.6 C (30.9 F)
1993-0.6 C (30.9 F)
19950.0 C (32.0 F)
1996-4.4 C (24.1 F)
1997-0.6 C (30.9 F)
19981.1 C (34.0 F)
1999-2.2 C (28.0 F)
2000-2.2 C (28.0 F)
2001-3.9 C (25.0 F)
2002-2.2 C (28.0 F)
20036.1 C (43.0 F)
2004-3.3 C (26.1 F)
20071.7 C (35.1 F)
200911.1 C (52.0 F)
201111.1 C (52.0 F)
201211.1 C (52.0 F)
2013-2.8 C (27.0 F)
20140.6 C (33.1 F)
20152.8 C (37.0 F)
2016-1.7 C (28.9 F)
2017-0.6 C (30.9 F)
20184.4 C (39.9 F)
20192.8 C (37.0 F)

Wettest day (Rx1day)

Wettest day (Rx1day) at Mott Is Isle Royale by year The wettest day of the year at Mott Is Isle Royale, 1940 to 2019. The record is 113.8 mm (4.5 in) in 1946, marked on the chart; the median year is 38.6 mm (1.5 in). 0501001501940196019802000Record: 113.8 mm (4.5 in) in 1946
The wettest day of the year at Mott Is Isle Royale, 1940 to 2019. The record is 113.8 mm (4.5 in) in 1946, marked on the chart; the median year is 38.6 mm (1.5 in).
Wettest day (Rx1day) at Mott Is Isle Royale by year
YearWettest day (Rx1day)
194050.8 mm (2.0 in)
194163.0 mm (2.5 in)
194247.8 mm (1.9 in)
194348.0 mm (1.9 in)
194458.9 mm (2.3 in)
194541.1 mm (1.6 in)
1946113.8 mm (4.5 in)
194737.1 mm (1.5 in)
194824.6 mm (1.0 in)
194934.3 mm (1.4 in)
195028.7 mm (1.1 in)
195138.6 mm (1.5 in)
195243.7 mm (1.7 in)
195365.0 mm (2.6 in)
195423.4 mm (0.9 in)
195540.4 mm (1.6 in)
195650.0 mm (2.0 in)
195741.7 mm (1.6 in)
195839.9 mm (1.6 in)
195937.1 mm (1.5 in)
196048.5 mm (1.9 in)
196138.6 mm (1.5 in)
196240.9 mm (1.6 in)
196363.5 mm (2.5 in)
196425.7 mm (1.0 in)
196553.3 mm (2.1 in)
196644.7 mm (1.8 in)
196736.1 mm (1.4 in)
196835.6 mm (1.4 in)
196928.7 mm (1.1 in)
197046.0 mm (1.8 in)
197150.5 mm (2.0 in)
197246.2 mm (1.8 in)
197319.1 mm (0.8 in)
197440.6 mm (1.6 in)
197545.7 mm (1.8 in)
197637.1 mm (1.5 in)
197794.2 mm (3.7 in)
197830.7 mm (1.2 in)
197924.6 mm (1.0 in)
198017.8 mm (0.7 in)
198147.2 mm (1.9 in)
198252.1 mm (2.1 in)
198342.7 mm (1.7 in)
198452.8 mm (2.1 in)
198552.1 mm (2.1 in)
198625.1 mm (1.0 in)
198729.5 mm (1.2 in)
198824.1 mm (0.9 in)
198937.1 mm (1.5 in)
199032.8 mm (1.3 in)
199143.9 mm (1.7 in)
199228.4 mm (1.1 in)
199322.9 mm (0.9 in)
199527.4 mm (1.1 in)
199681.3 mm (3.2 in)
199739.6 mm (1.6 in)
199825.4 mm (1.0 in)
199941.7 mm (1.6 in)
200022.4 mm (0.9 in)
200143.2 mm (1.7 in)
200233.5 mm (1.3 in)
200322.6 mm (0.9 in)
200438.1 mm (1.5 in)
200716.3 mm (0.6 in)
200915.0 mm (0.6 in)
20113.8 mm (0.15 in)
201222.4 mm (0.9 in)
201352.6 mm (2.1 in)
201438.6 mm (1.5 in)
201527.7 mm (1.1 in)
201633.0 mm (1.3 in)
201736.3 mm (1.4 in)
201828.4 mm (1.1 in)
201953.3 mm (2.1 in)

Wettest five days (Rx5day)

Wettest five days (Rx5day) at Mott Is Isle Royale by year The wettest five days of the year at Mott Is Isle Royale, 1940 to 2019. The record is 122.5 mm (4.8 in) in 1977, marked on the chart; the median year is 57.7 mm (2.3 in). 0501001501940196019802000Record: 122.5 mm (4.8 in) in 1977
The wettest five days of the year at Mott Is Isle Royale, 1940 to 2019. The record is 122.5 mm (4.8 in) in 1977, marked on the chart; the median year is 57.7 mm (2.3 in).
Wettest five days (Rx5day) at Mott Is Isle Royale by year
YearWettest five days (Rx5day)
194052.4 mm (2.1 in)
194165.7 mm (2.6 in)
194269.4 mm (2.7 in)
194352.6 mm (2.1 in)
194468.3 mm (2.7 in)
194563.5 mm (2.5 in)
1946116.3 mm (4.6 in)
194756.2 mm (2.2 in)
194828.9 mm (1.1 in)
194976.2 mm (3.0 in)
195043.2 mm (1.7 in)
195155.6 mm (2.2 in)
195261.1 mm (2.4 in)
195386.6 mm (3.4 in)
195443.1 mm (1.7 in)
195555.6 mm (2.2 in)
195658.1 mm (2.3 in)
195777.5 mm (3.1 in)
195883.6 mm (3.3 in)
195947.0 mm (1.9 in)
196052.9 mm (2.1 in)
196182.3 mm (3.2 in)
196249.8 mm (2.0 in)
196380.3 mm (3.2 in)
196461.5 mm (2.4 in)
196588.6 mm (3.5 in)
196670.4 mm (2.8 in)
196744.6 mm (1.8 in)
196862.5 mm (2.5 in)
196938.9 mm (1.5 in)
197051.4 mm (2.0 in)
197197.5 mm (3.8 in)
197262.2 mm (2.4 in)
197344.0 mm (1.7 in)
197467.5 mm (2.7 in)
197569.3 mm (2.7 in)
197690.5 mm (3.6 in)
1977122.5 mm (4.8 in)
197867.6 mm (2.7 in)
197957.3 mm (2.3 in)
198024.7 mm (1.0 in)
198153.3 mm (2.1 in)
198277.1 mm (3.0 in)
198360.5 mm (2.4 in)
198488.2 mm (3.5 in)
198573.4 mm (2.9 in)
198641.1 mm (1.6 in)
198748.8 mm (1.9 in)
198846.7 mm (1.8 in)
198938.4 mm (1.5 in)
199054.2 mm (2.1 in)
199171.7 mm (2.8 in)
199253.7 mm (2.1 in)
199332.5 mm (1.3 in)
199572.9 mm (2.9 in)
199681.3 mm (3.2 in)
199754.0 mm (2.1 in)
199845.3 mm (1.8 in)
199963.6 mm (2.5 in)
200032.1 mm (1.3 in)
200178.2 mm (3.1 in)
200262.7 mm (2.5 in)
200334.1 mm (1.3 in)
200457.0 mm (2.2 in)
200740.1 mm (1.6 in)
2009n/a
20114.3 mm (0.17 in)
201222.4 mm (0.9 in)
201380.6 mm (3.2 in)
201450.8 mm (2.0 in)
201520.1 mm (0.8 in)
201618.1 mm (0.7 in)
201758.9 mm (2.3 in)
201829.0 mm (1.1 in)
201967.0 mm (2.6 in)

Longest dry spell (CDD)

Longest dry spell (CDD) at Mott Is Isle Royale by year The longest dry spell of the year at Mott Is Isle Royale, 1940 to 2019. The record is 36 days in 1943, marked on the chart; the median year is 14 days. 0102030401940196019802000Record: 36 days in 1943
The longest dry spell of the year at Mott Is Isle Royale, 1940 to 2019. The record is 36 days in 1943, marked on the chart; the median year is 14 days.
Longest dry spell (CDD) at Mott Is Isle Royale by year
YearLongest dry spell (CDD)
194011 days
19413 days
194218 days
194336 days
194414 days
194515 days
194626 days
194713 days
194811 days
194910 days
195011 days
195115 days
195213 days
195317 days
195413 days
195513 days
195619 days
195714 days
19589 days
195910 days
196010 days
196116 days
196210 days
196322 days
196414 days
196512 days
196615 days
196719 days
196813 days
196910 days
197014 days
19719 days
197212 days
197312 days
197412 days
197515 days
197624 days
197711 days
197814 days
197920 days
198010 days
198125 days
198220 days
198326 days
198411 days
198513 days
198612 days
198715 days
198817 days
198913 days
199017 days
199122 days
199210 days
199314 days
199518 days
199615 days
199722 days
199816 days
199914 days
200013 days
200112 days
200224 days
200314 days
200422 days
200721 days
2009n/a
201111 days
20127 days
20137 days
20146 days
20158 days
20166 days
20173 days
201814 days
20195 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.

Download the Data

  • Data for Mott Is Isle Royale standing records by year: CSV or JSON. Field meanings are on the data page.
  • Data for Mott Is Isle Royale 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 (2025-12-31).