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Data as of 2025-12-31
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Built 2026-10-18 (18 October 2026)

Gwinn K I Sawyer AFB Weather Records (USW00094836)

Record envelope, standing records and threshold days for Gwinn K I Sawyer AFB (USW00094836), Michigan, United States, with 71 years of record.

Key Facts for Gwinn K I Sawyer AFB

  • Gwinn K I Sawyer AFB (USW00094836) is a weather station in Michigan, United States at 46.35 latitude and -87.40 longitude, 378 m (1,240 ft) above sea level.
  • The station reports from 1956 to 2026, 71 years of record.
  • 1,464 records set at Gwinn K I Sawyer AFB 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, 46.35 latitude, -87.40 longitude.
  • Elevation: 378 m (1,240 ft).
  • Period of record: 1956 to 2026, 71 years.
  • Eligible elements: none yet.

Daily Record Envelope and 2026

54 days at or beyond a record
Daily record high and record low at Gwinn K I Sawyer AFB, with 2026 drawn through them The band shows the record high and record low for each calendar day at Gwinn K I Sawyer AFB. The lines show the 2026 daily maximum and minimum. 54 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 Gwinn K I Sawyer AFB. The lines show the 2026 daily maximum and minimum. 54 days in 2026 matched or passed a record. Temperatures are in degrees Celsius.
Daily record high and record low at Gwinn K I Sawyer AFB, 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)3.0 C (37.4 F)-28.0 C (-18.4 F)
Feb11.1 C (52.0 F)-31.7 C (-25.1 F)9.0 C (48.2 F)-26.0 C (-14.8 F)
Mar17.2 C (63.0 F)-29.4 C (-20.9 F)15.0 C (59.0 F)-18.0 C (-0.4 F)
Apr28.3 C (82.9 F)-19.4 C (-2.9 F)18.0 C (64.4 F)-18.0 C (-0.4 F)
May34.4 C (93.9 F)-8.3 C (17.1 F)29.0 C (84.2 F)-2.0 C (28.4 F)
Jun38.9 C (102.0 F)-3.9 C (25.0 F)35.0 C (95.0 F)0.0 C (32.0 F)
Jul37.2 C (99.0 F)1.1 C (34.0 F)32.0 C (89.6 F)6.0 C (42.8 F)
Aug34.4 C (93.9 F)0.6 C (33.1 F)32.0 C (89.6 F)1.0 C (33.8 F)
Sep30.6 C (87.1 F)-6.1 C (21.0 F)28.0 C (82.4 F)3.0 C (37.4 F)
Oct29.0 C (84.2 F)-11.1 C (12.0 F)29.0 C (84.2 F)-4.0 C (24.8 F)
Nov18.9 C (66.0 F)-21.1 C (-6.0 F)10.0 C (50.0 F)-9.0 C (15.8 F)
Dec13.9 C (57.0 F)-27.2 C (-17.0 F)4.0 C (39.2 F)-23.0 C (-9.4 F)

Which Years Hold Standing Records

1,464 standing records
Standing records at Gwinn K I Sawyer AFB by the year they were set 1,464 records at Gwinn K I Sawyer AFB still stand. 1963 holds the most, with 141. 0501001501957: 821958: 491959: 331960: 881961: 1071962: 1141963: 1411964: 1411965: 1211966: 1111967: 891968: 1001969: 771970: 972025: 11419571959196119631965196719692025
1,464 records at Gwinn K I Sawyer AFB still stand. 1963 holds the most, with 141.
Standing records at Gwinn K I Sawyer AFB by the year they were set
Year setStanding records
195782
195849
195933
196088
1961107
1962114
1963141
1964141
1965121
1966111
196789
1968100
196977
197097
2025114

Wettest Day of Each Month

Nov: 152.1 mm (6.0 in)
Record daily precipitation for each month at Gwinn K I Sawyer AFB The wettest day on record for each calendar month at Gwinn K I Sawyer AFB. The most was 152.1 mm (6.0 in) on 10 November 1968. 050100150200 Jan: 33.5 mm (1.3 in), 7 January 1967 Jan Feb: 29.7 mm (1.2 in), 12 February 1965 Feb Mar: 45.7 mm (1.8 in), 20 March 1969 Mar Apr: 38.9 mm (1.5 in), 16 April 1961 Apr May: 55.4 mm (2.2 in), 30 May 1970 May Jun: 58.2 mm (2.3 in), 22 June 1961 Jun Jul: 49.0 mm (1.9 in), 21 July 1960 Jul Aug: 59.7 mm (2.4 in), 28 August 1960 Aug Sep: 41.4 mm (1.6 in), 2 September 1960 Sep Oct: 49.0 mm (1.9 in), 15 October 1966 Oct Nov: 152.1 mm (6.0 in), 10 November 1968 Nov Dec: 22.6 mm (0.9 in), 12 December 1961 Dec
The wettest day on record for each calendar month at Gwinn K I Sawyer AFB. The most was 152.1 mm (6.0 in) on 10 November 1968.
Record daily precipitation for each month at Gwinn K I Sawyer AFB
MonthRecord daily precipitation (mm)Date
Jan33.5 mm (1.3 in)7 January 1967
Feb29.7 mm (1.2 in)12 February 1965
Mar45.7 mm (1.8 in)20 March 1969
Apr38.9 mm (1.5 in)16 April 1961
May55.4 mm (2.2 in)30 May 1970
Jun58.2 mm (2.3 in)22 June 1961
Jul49.0 mm (1.9 in)21 July 1960
Aug59.7 mm (2.4 in)28 August 1960
Sep41.4 mm (1.6 in)2 September 1960
Oct49.0 mm (1.9 in)15 October 1966
Nov152.1 mm (6.0 in)10 November 1968
Dec22.6 mm (0.9 in)12 December 1961

Period of Record Coverage

1957 to 2025
Days with data per year at Gwinn K I Sawyer AFB 15 years of record at Gwinn K I Sawyer AFB, 1957 to 2025. 4 years have data for under 90 percent of days and are left out of rankings: 1957, 1958, 1959, 1969. 1957: 327 of 365 days1958: 199 of 365 days1959: 69 of 365 days1960: 366 of 366 days1961: 365 of 365 days1962: 365 of 365 days1963: 365 of 365 days1964: 364 of 366 days1965: 359 of 365 days1966: 363 of 365 days1967: 362 of 365 days1968: 361 of 366 days1969: 274 of 365 days1970: 361 of 365 days2025: 360 of 365 days1960196519702025
15 years of record at Gwinn K I Sawyer AFB, 1957 to 2025. 4 years have data for under 90 percent of days and are left out of rankings: 1957, 1958, 1959, 1969.
Days with data per year at Gwinn K I Sawyer AFB
YearDays with dataShare of yearComplete
195732790%No
195819955%No
19596919%No
1960366100%Yes
1961365100%Yes
1962365100%Yes
1963365100%Yes
196436499%Yes
196535998%Yes
196636399%Yes
196736299%Yes
196836199%Yes
196927475%No
197036199%Yes
202536099%Yes

Latest Records

0

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

Climate Trend

11 complete years, 1960 to 2025
Annual mean temperature at Gwinn K I Sawyer AFB as warming stripes, 1960 to 2025 One stripe for each of 11 complete years at Gwinn K I Sawyer AFB, 1960 to 2025. Blue stripes are years cooler than the station's own mean of 4.2 C (39.5 F); red stripes are warmer. The coolest year was 1965, at 2.9 C (37.3 F), and the warmest was 2025, at 5.6 C (42.1 F). The strongest colour marks a difference of 1.5 C (2.7 F). 1960: 4.3 C, +0.2 C from the station mean1961: 5.1 C, +0.9 C from the station mean1962: 4.1 C, 0.0 C from the station mean1963: 3.9 C, -0.2 C from the station mean1964: 4.4 C, +0.2 C from the station mean1965: 2.9 C, -1.2 C from the station mean1966: 4.1 C, 0.0 C from the station mean1967: 3.4 C, -0.7 C from the station mean1968: 4.4 C, +0.2 C from the station mean1970: 3.5 C, -0.6 C from the station mean2025: 5.6 C, +1.4 C from the station mean1960197019801990200020102020
One stripe for each of 11 complete years at Gwinn K I Sawyer AFB, 1960 to 2025. Blue stripes are years cooler than the station's own mean of 4.2 C (39.5 F); red stripes are warmer. The coolest year was 1965, at 2.9 C (37.3 F), and the warmest was 2025, at 5.6 C (42.1 F). The strongest colour marks a difference of 1.5 C (2.7 F).
Annual mean temperature at Gwinn K I Sawyer AFB as warming stripes, 1960 to 2025
YearAnnual mean temperatureDifference from the station mean
19604.3 C+0.16 C
19615.1 C+0.89 C
19624.1 C-0.05 C
19633.9 C-0.25 C
19644.4 C+0.22 C
19652.9 C-1.23 C
19664.1 C-0.04 C
19673.4 C-0.74 C
19684.4 C+0.20 C
19703.5 C-0.62 C
20255.6 C+1.43 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

1956 to 2026
Yearly extremes at Gwinn K I Sawyer AFB: the record and the median year
MeasureRecordYear of the recordMedian yearYears with a value
Hottest day (TXx)38.9 C (102.0 F)196333.9 C (93.0 F)16
Coldest night (TNn)-32.8 C (-27.0 F)1963-29.7 C (-21.5 F)16
Wettest day (Rx1day)152.1 mm (6.0 in)196842.7 mm (1.7 in)14
Wettest five days (Rx5day)94.0 mm (3.7 in)195771.8 mm (2.8 in)14
Longest dry spell (CDD)23 days196915 days14

Hottest day (TXx)

Hottest day (TXx) at Gwinn K I Sawyer AFB by year The hottest day of the year at Gwinn K I Sawyer AFB, 1956 to 2026. The record is 38.9 C (102.0 F) in 1963, marked on the chart; the median year is 33.9 C (93.0 F). 0102030401960198020002020Record: 38.9 C (102.0 F) in 1963
The hottest day of the year at Gwinn K I Sawyer AFB, 1956 to 2026. The record is 38.9 C (102.0 F) in 1963, marked on the chart; the median year is 33.9 C (93.0 F).
Hottest day (TXx) at Gwinn K I Sawyer AFB by year
YearHottest day (TXx)
1956n/a
195733.9 C (93.0 F)
195834.4 C (93.9 F)
19598.9 C (48.0 F)
196031.1 C (88.0 F)
196133.9 C (93.0 F)
196232.2 C (90.0 F)
196338.9 C (102.0 F)
196433.3 C (91.9 F)
196533.9 C (93.0 F)
196635.0 C (95.0 F)
196730.0 C (86.0 F)
196832.2 C (90.0 F)
196934.4 C (93.9 F)
197034.4 C (93.9 F)
202535.0 C (95.0 F)
202637.0 C (98.6 F)

Coldest night (TNn)

Coldest night (TNn) at Gwinn K I Sawyer AFB by year The coldest night of the year at Gwinn K I Sawyer AFB, 1956 to 2026. The record is -32.8 C (-27.0 F) in 1963, marked on the chart; the median year is -29.7 C (-21.5 F). -40-30-20-101960198020002020Record: -32.8 C (-27.0 F) in 1963
The coldest night of the year at Gwinn K I Sawyer AFB, 1956 to 2026. The record is -32.8 C (-27.0 F) in 1963, marked on the chart; the median year is -29.7 C (-21.5 F).
Coldest night (TNn) at Gwinn K I Sawyer AFB by year
YearColdest night (TNn)
1956n/a
1957-31.1 C (-24.0 F)
1958-12.2 C (10.0 F)
1959-21.1 C (-6.0 F)
1960-25.6 C (-14.1 F)
1961-27.8 C (-18.0 F)
1962-29.4 C (-20.9 F)
1963-32.8 C (-27.0 F)
1964-25.0 C (-13.0 F)
1965-31.7 C (-25.1 F)
1966-31.7 C (-25.1 F)
1967-30.6 C (-23.1 F)
1968-30.0 C (-22.0 F)
1969-25.6 C (-14.1 F)
1970-31.7 C (-25.1 F)
2025-28.0 C (-18.4 F)
2026-30.0 C (-22.0 F)

Wettest day (Rx1day)

Wettest day (Rx1day) at Gwinn K I Sawyer AFB by year The wettest day of the year at Gwinn K I Sawyer AFB, 1956 to 2026. The record is 152.1 mm (6.0 in) in 1968, marked on the chart; the median year is 42.7 mm (1.7 in). 0501001502001960198020002020Record: 152.1 mm (6.0 in) in 1968
The wettest day of the year at Gwinn K I Sawyer AFB, 1956 to 2026. The record is 152.1 mm (6.0 in) in 1968, marked on the chart; the median year is 42.7 mm (1.7 in).
Wettest day (Rx1day) at Gwinn K I Sawyer AFB by year
YearWettest day (Rx1day)
1956n/a
195765.0 mm (2.6 in)
195825.7 mm (1.0 in)
195922.9 mm (0.9 in)
196059.7 mm (2.4 in)
196158.2 mm (2.3 in)
196230.7 mm (1.2 in)
196325.9 mm (1.0 in)
196428.7 mm (1.1 in)
196533.0 mm (1.3 in)
196649.0 mm (1.9 in)
196739.6 mm (1.6 in)
1968152.1 mm (6.0 in)
196945.7 mm (1.8 in)
197055.4 mm (2.2 in)
2025n/a
2026n/a

Wettest five days (Rx5day)

Wettest five days (Rx5day) at Gwinn K I Sawyer AFB by year The wettest five days of the year at Gwinn K I Sawyer AFB, 1956 to 2026. The record is 94.0 mm (3.7 in) in 1957, marked on the chart; the median year is 71.8 mm (2.8 in). 204060801001960198020002020Record: 94.0 mm (3.7 in) in 1957
The wettest five days of the year at Gwinn K I Sawyer AFB, 1956 to 2026. The record is 94.0 mm (3.7 in) in 1957, marked on the chart; the median year is 71.8 mm (2.8 in).
Wettest five days (Rx5day) at Gwinn K I Sawyer AFB by year
YearWettest five days (Rx5day)
1956n/a
195794.0 mm (3.7 in)
195849.0 mm (1.9 in)
195934.4 mm (1.4 in)
196087.6 mm (3.4 in)
196171.1 mm (2.8 in)
196254.6 mm (2.1 in)
196347.0 mm (1.9 in)
196464.5 mm (2.5 in)
196572.4 mm (2.9 in)
196687.6 mm (3.4 in)
196776.1 mm (3.0 in)
196877.0 mm (3.0 in)
196956.9 mm (2.2 in)
197090.0 mm (3.5 in)
2025n/a
2026n/a

Longest dry spell (CDD)

Longest dry spell (CDD) at Gwinn K I Sawyer AFB by year The longest dry spell of the year at Gwinn K I Sawyer AFB, 1956 to 2026. The record is 23 days in 1969, marked on the chart; the median year is 15 days. 5101520251960198020002020Record: 23 days in 1969
The longest dry spell of the year at Gwinn K I Sawyer AFB, 1956 to 2026. The record is 23 days in 1969, marked on the chart; the median year is 15 days.
Longest dry spell (CDD) at Gwinn K I Sawyer AFB by year
YearLongest dry spell (CDD)
1956n/a
195715 days
195812 days
19599 days
196013 days
196117 days
196214 days
196317 days
196413 days
196511 days
196615 days
196719 days
196815 days
196923 days
197019 days
2025n/a
2026n/a

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 Gwinn K I Sawyer AFB standing records by year: CSV or JSON. Field meanings are on the data page.
  • Data for Gwinn K I Sawyer AFB 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 2026-10-17 (17 October 2026). Records are computed by this site and are not official.

Data as of . Last revised (2025-12-31).