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Sullivans Is Weather Records (USC00388405)

Record envelope, standing records and threshold days for Sullivans Is (USC00388405), South Carolina, United States, with 76 years of record.

Key Facts for Sullivans Is

  • Sullivans Is (USC00388405) is a weather station in South Carolina, United States at 32.76 latitude and -79.86 longitude, 2 m (5 ft) above sea level.
  • The station reports from 1951 to 2026, 76 years of record.
  • 1,464 records set at Sullivans Is still stand.
  • Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
  • Sullivans Is set a daily record high maximum temperature of 35.6 C (96.1 F) on 19 September 2026 (provisional).

Provisional Records

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

About the Station

  • Location: South Carolina, United States, 32.76 latitude, -79.86 longitude.
  • Elevation: 2 m (5 ft).
  • Period of record: 1951 to 2026, 76 years.
  • Eligible elements: tmax, tmin, prcp, snow, snwd.

Daily Record Envelope and 2026

3 days at or beyond a record
Daily record high and record low at Sullivans Is, with 2026 drawn through them The band shows the record high and record low for each calendar day at Sullivans Is. The lines show the 2026 daily maximum and minimum. 3 days in 2026 matched or passed a record. Temperatures are in degrees Celsius. -200204060 JanFebMarAprMayJunJulAugSepOctNovDec
The band shows the record high and record low for each calendar day at Sullivans Is. The lines show the 2026 daily maximum and minimum. 3 days in 2026 matched or passed a record. Temperatures are in degrees Celsius.
Daily record high and record low at Sullivans Is, with 2026 drawn through them
MonthHighest record highLowest record low2026 highest maximum2026 lowest minimum
Jan25.6 C (78.1 F)-12.8 C (9.0 F)18.9 C (66.0 F)-6.1 C (21.0 F)
Feb28.3 C (82.9 F)-11.1 C (12.0 F)19.4 C (66.9 F)-2.2 C (28.0 F)
Mar32.2 C (90.0 F)-7.8 C (18.0 F)25.0 C (77.0 F)2.8 C (37.0 F)
Apr33.9 C (93.0 F)-5.0 C (23.0 F)28.3 C (82.9 F)8.9 C (48.0 F)
May37.2 C (99.0 F)2.8 C (37.0 F)28.3 C (82.9 F)12.2 C (54.0 F)
Jun40.6 C (105.1 F)9.4 C (48.9 F)35.0 C (95.0 F)12.8 C (55.0 F)
Jul38.3 C (100.9 F)15.0 C (59.0 F)36.1 C (97.0 F)22.8 C (73.0 F)
Aug39.4 C (102.9 F)12.8 C (55.0 F)35.6 C (96.1 F)22.8 C (73.0 F)
Sep37.2 C (99.0 F)7.8 C (46.0 F)35.6 C (96.1 F)16.1 C (61.0 F)
Oct34.4 C (93.9 F)-5.6 C (21.9 F)n/an/a
Nov31.7 C (89.1 F)-5.6 C (21.9 F)n/an/a
Dec28.9 C (84.0 F)-11.7 C (10.9 F)n/an/a

Which Years Hold Standing Records

1,464 standing records
Standing records at Sullivans Is by the year they were set 1,464 records at Sullivans Is still stand. 1971 holds the most, with 48. 02040601951: 121952: 261953: 281954: 141955: 191956: 141957: 181958: 221959: 161960: 181961: 211962: 161963: 141964: 251965: 141966: 201967: 301968: 191969: 91970: 191971: 481972: 191973: 211974: 411975: 71976: 161977: 251978: 151979: 141980: 71981: 151982: 261983: 281984: 251985: 291986: 231987: 101988: 181989: 291990: 181991: 111992: 141993: 91994: 121995: 181996: 131997: 321998: 251999: 232000: 262001: 182002: 242003: 112004: 112005: 192006: 162007: 272008: 252009: 182010: 202011: 192012: 212013: 142014: 172015: 232016: 132017: 132018: 272019: 262020: 62021: 72022: 142023: 292024: 172025: 192026: 191951195919671975198319911999200720152023
1,464 records at Sullivans Is still stand. 1971 holds the most, with 48.
Standing records at Sullivans Is by the year they were set
Year setStanding records
195112
195226
195328
195414
195519
195614
195718
195822
195916
196018
196121
196216
196314
196425
196514
196620
196730
196819
19699
197019
197148
197219
197321
197441
19757
197616
197725
197815
197914
19807
198115
198226
198328
198425
198529
198623
198710
198818
198929
199018
199111
199214
19939
199412
199518
199613
199732
199825
199923
200026
200118
200224
200311
200411
200519
200616
200727
200825
200918
201020
201119
201221
201314
201417
201523
201613
201713
201827
201926
20206
20217
202214
202329
202417
202519
202619

All-Time Record Progression

4 new records
When Sullivans Is set new all-time records 4 all-time records were set at Sullivans Is between 21 January 1985 and 14 December 2010. Each dot is a new record. Record low minimum temperatureRecord daily precipitationRecord high minimum temperatureRecord low maximum temperature21 January 1985: Record low minimum temperature -12.8 C (9.0 F)11 October 1990: Record daily precipitation 249.7 mm (9.8 in)20 July 1996: Record high minimum temperature 31.7 C (89.1 F)14 December 2010: Record low maximum temperature -1.1 C (30.0 F)198519901995200020052010
4 all-time records were set at Sullivans Is between 21 January 1985 and 14 December 2010. Each dot is a new record.
When Sullivans Is set new all-time records
DateKindDetail
1985-01-21Record low minimum temperatureRecord low minimum temperature -12.8 C (9.0 F)
1990-10-11Record daily precipitationRecord daily precipitation 249.7 mm (9.8 in)
1996-07-20Record high minimum temperatureRecord high minimum temperature 31.7 C (89.1 F)
2010-12-14Record low maximum temperatureRecord low maximum temperature -1.1 C (30.0 F)

Wettest Day of Each Month

Oct: 249.7 mm (9.8 in)
Record daily precipitation for each month at Sullivans Is The wettest day on record for each calendar month at Sullivans Is. The most was 249.7 mm (9.8 in) on 11 October 1990. 0100200300 Jan: 104.1 mm (4.1 in), 30 January 2010 Jan Feb: 153.4 mm (6.0 in), 17 February 1998 Feb Mar: 101.6 mm (4.0 in), 23 March 2005 Mar Apr: 118.1 mm (4.6 in), 9 April 1984 Apr May: 165.1 mm (6.5 in), 24 May 1976 May Jun: 132.6 mm (5.2 in), 6 June 1997 Jun Jul: 153.7 mm (6.1 in), 20 July 1953 Jul Aug: 165.9 mm (6.5 in), 22 August 2025 Aug Sep: 119.4 mm (4.7 in), 26 September 2002 Sep Oct: 249.7 mm (9.8 in), 11 October 1990 Oct Nov: 192.3 mm (7.6 in), 1 November 1969 Nov Dec: 99.1 mm (3.9 in), 3 December 1971 Dec
The wettest day on record for each calendar month at Sullivans Is. The most was 249.7 mm (9.8 in) on 11 October 1990.
Record daily precipitation for each month at Sullivans Is
MonthRecord daily precipitation (mm)Date
Jan104.1 mm (4.1 in)30 January 2010
Feb153.4 mm (6.0 in)17 February 1998
Mar101.6 mm (4.0 in)23 March 2005
Apr118.1 mm (4.6 in)9 April 1984
May165.1 mm (6.5 in)24 May 1976
Jun132.6 mm (5.2 in)6 June 1997
Jul153.7 mm (6.1 in)20 July 1953
Aug165.9 mm (6.5 in)22 August 2025
Sep119.4 mm (4.7 in)26 September 2002
Oct249.7 mm (9.8 in)11 October 1990
Nov192.3 mm (7.6 in)1 November 1969
Dec99.1 mm (3.9 in)3 December 1971

Period of Record Coverage

1951 to 2026
Days with data per year at Sullivans Is 76 years of record at Sullivans Is, 1951 to 2026. 32 years have data for under 90 percent of days and are left out of rankings: 1951, 1969, 1970, 1973, 1975, 1976, 1979, 1980 and others. 1951: 180 of 365 days1952: 366 of 366 days1953: 365 of 365 days1954: 362 of 365 days1955: 363 of 365 days1956: 365 of 366 days1957: 365 of 365 days1958: 365 of 365 days1959: 363 of 365 days1960: 366 of 366 days1961: 365 of 365 days1962: 365 of 365 days1963: 365 of 365 days1964: 364 of 366 days1965: 365 of 365 days1966: 363 of 365 days1967: 365 of 365 days1968: 366 of 366 days1969: 247 of 365 days1970: 242 of 365 days1971: 329 of 365 days1972: 334 of 366 days1973: 272 of 365 days1974: 361 of 365 days1975: 279 of 365 days1976: 286 of 366 days1977: 349 of 365 days1978: 337 of 365 days1979: 302 of 365 days1980: 200 of 366 days1981: 311 of 365 days1982: 315 of 365 days1983: 361 of 365 days1984: 351 of 366 days1985: 358 of 365 days1986: 351 of 365 days1987: 338 of 365 days1988: 353 of 366 days1989: 279 of 365 days1990: 310 of 365 days1991: 303 of 365 days1992: 354 of 366 days1993: 351 of 365 days1994: 335 of 365 days1995: 312 of 365 days1996: 330 of 366 days1997: 327 of 365 days1998: 316 of 365 days1999: 296 of 365 days2000: 242 of 366 days2001: 303 of 365 days2002: 319 of 365 days2003: 288 of 365 days2004: 315 of 366 days2005: 316 of 365 days2006: 327 of 365 days2007: 329 of 365 days2008: 324 of 366 days2009: 326 of 365 days2010: 341 of 365 days2011: 342 of 365 days2012: 341 of 366 days2013: 330 of 365 days2014: 344 of 365 days2015: 346 of 365 days2016: 342 of 366 days2017: 332 of 365 days2018: 268 of 365 days2019: 300 of 365 days2020: 193 of 366 days2021: 166 of 365 days2022: 332 of 365 days2023: 362 of 365 days2024: 366 of 366 days2025: 322 of 365 days2026: 251 of 365 days1960197019801990200020102020
76 years of record at Sullivans Is, 1951 to 2026. 32 years have data for under 90 percent of days and are left out of rankings: 1951, 1969, 1970, 1973, 1975, 1976, 1979, 1980 and others.
Days with data per year at Sullivans Is
YearDays with dataShare of yearComplete
195118049%No
1952366100%Yes
1953365100%Yes
195436299%Yes
195536399%Yes
1956365100%Yes
1957365100%Yes
1958365100%Yes
195936399%Yes
1960366100%Yes
1961365100%Yes
1962365100%Yes
1963365100%Yes
196436499%Yes
1965365100%Yes
196636399%Yes
1967365100%Yes
1968366100%Yes
196924768%No
197024266%No
197132990%Yes
197233491%Yes
197327275%No
197436199%Yes
197527976%No
197628678%No
197734996%Yes
197833792%Yes
197930283%No
198020055%No
198131185%No
198231586%No
198336199%Yes
198435196%Yes
198535898%Yes
198635196%Yes
198733893%Yes
198835396%Yes
198927976%No
199031085%No
199130383%No
199235497%Yes
199335196%Yes
199433592%Yes
199531285%No
199633090%Yes
199732790%No
199831687%No
199929681%No
200024266%No
200130383%No
200231987%No
200328879%No
200431586%No
200531687%No
200632790%No
200732990%Yes
200832489%No
200932689%No
201034193%Yes
201134294%Yes
201234193%Yes
201333090%Yes
201434494%Yes
201534695%Yes
201634293%Yes
201733291%Yes
201826873%No
201930082%No
202019353%No
202116645%No
202233291%Yes
202336299%Yes
2024366100%Yes
202532288%No
202625169%No

Latest Records

20
Latest records at Sullivans Is
DateStationRecordValueBeat old record byOld record stoodSignificance
19 September 2026Sullivans Is, USdaily high max (Provisional)35.6 C (96.1 F)2.3 C (4.1 F)7 years17 of 100 (Routine)
20 August 2026Sullivans Is, USdaily high min (Provisional)27.8 C (82.0 F)1.1 C (2.0 F)28 years20 of 100 (Routine)
19 August 2026Sullivans Is, USdaily high min (Provisional)28.9 C (84.0 F)2.2 C (4.0 F)71 years38 of 100 (Notable)
17 August 2026Sullivans Is, USdaily high min (Provisional)27.2 C (81.0 F)0.5 C (0.9 F)72 years30 of 100 (Routine)
9 August 2026Sullivans Is, USdaily high min (Tie)26.7 C (80.1 F)tie12 years2 of 100 (Routine)
29 July 2026Sullivans Is, USdaily low max (Tie)27.2 C (81.0 F)tie60 years6 of 100 (Routine)
18 July 2026Sullivans Is, USdaily high min (Tie)27.2 C (81.0 F)tie3 years1 of 100 (Routine)
14 July 2026Sullivans Is, USdaily low max26.1 C (79.0 F)1.7 C (3.1 F)27 years22 of 100 (Routine)
10 July 2026Sullivans Is, USdaily high min27.8 C (82.0 F)0.6 C (1.1 F)23 years15 of 100 (Routine)
7 July 2026Sullivans Is, USdaily high min (Tie)27.2 C (81.0 F)tie72 years7 of 100 (Routine)
6 July 2026Sullivans Is, USdaily high min (Tie)27.8 C (82.0 F)tie12 years2 of 100 (Routine)
5 July 2026Sullivans Is, USdaily high min27.8 C (82.0 F)0.6 C (1.1 F)1 year9 of 100 (Routine)
4 July 2026Sullivans Is, USdaily high min26.7 C (80.1 F)0.6 C (1.1 F)48 years23 of 100 (Routine)
12 June 2026Sullivans Is, USdaily high max (Tie)35.0 C (95.0 F)tie44 years5 of 100 (Routine)
3 June 2026Sullivans Is, USdaily low min12.8 C (55.0 F)0.5 C (0.9 F)59 years25 of 100 (Routine)
27 May 2026Sullivans Is, USdaily high min26.1 C (79.0 F)0.5 C (0.9 F)20 years14 of 100 (Routine)
26 May 2026Sullivans Is, USdaily high min25.6 C (78.1 F)0.6 C (1.1 F)72 years29 of 100 (Routine)
25 May 2026Sullivans Is, USdaily high min (Tie)25.0 C (77.0 F)tie72 years7 of 100 (Routine)
22 May 2026Sullivans Is, USdaily high min24.4 C (75.9 F)0.5 C (0.9 F)68 years28 of 100 (Routine)
14 May 2026Sullivans Is, USdaily low max (Tie)21.7 C (71.1 F)tie36 years4 of 100 (Routine)

Climate Trend

46 complete years, 1952 to 2024
Annual mean temperature at Sullivans Is as warming stripes, 1952 to 2024 One stripe for each of 46 complete years at Sullivans Is, 1952 to 2024. Blue stripes are years cooler than the station's own mean of 19.0 C (66.1 F); red stripes are warmer. The coolest year was 1988, at 17.9 C (64.2 F), and the warmest was 2012, at 20.4 C (68.8 F). The strongest colour marks a difference of 1.5 C (2.7 F). 1952: 19.3 C, +0.3 C from the station mean1953: 19.4 C, +0.5 C from the station mean1954: 19.3 C, +0.3 C from the station mean1955: 19.1 C, +0.1 C from the station mean1956: 19.3 C, +0.4 C from the station mean1957: 19.3 C, +0.3 C from the station mean1958: 18.2 C, -0.8 C from the station mean1959: 19.2 C, +0.3 C from the station mean1960: 18.3 C, -0.7 C from the station mean1961: 18.8 C, -0.1 C from the station mean1962: 18.5 C, -0.5 C from the station mean1963: 18.2 C, -0.7 C from the station mean1964: 18.6 C, -0.3 C from the station mean1965: 18.9 C, 0.0 C from the station mean1966: 18.2 C, -0.7 C from the station mean1967: 18.5 C, -0.5 C from the station mean1968: 18.1 C, -0.9 C from the station mean1974: 18.6 C, -0.4 C from the station mean1977: 18.6 C, -0.4 C from the station mean1978: 18.5 C, -0.4 C from the station mean1981: 18.2 C, -0.7 C from the station mean1983: 18.8 C, -0.2 C from the station mean1984: 19.3 C, +0.3 C from the station mean1985: 19.6 C, +0.6 C from the station mean1986: 19.9 C, +0.9 C from the station mean1988: 17.9 C, -1.1 C from the station mean1992: 18.6 C, -0.3 C from the station mean1993: 18.5 C, -0.5 C from the station mean1994: 19.1 C, +0.2 C from the station mean1996: 18.8 C, -0.2 C from the station mean1997: 18.7 C, -0.3 C from the station mean1998: 20.0 C, +1.0 C from the station mean2001: 19.1 C, +0.1 C from the station mean2002: 19.5 C, +0.5 C from the station mean2005: 18.4 C, -0.6 C from the station mean2006: 19.2 C, +0.2 C from the station mean2007: 18.8 C, -0.2 C from the station mean2008: 18.0 C, -1.0 C from the station mean2010: 18.5 C, -0.5 C from the station mean2011: 20.0 C, +1.0 C from the station mean2012: 20.4 C, +1.5 C from the station mean2014: 19.1 C, +0.1 C from the station mean2015: 19.8 C, +0.8 C from the station mean2016: 19.9 C, +0.9 C from the station mean2023: 19.9 C, +0.9 C from the station mean2024: 19.6 C, +0.7 C from the station mean19521960197019801990200020102020
One stripe for each of 46 complete years at Sullivans Is, 1952 to 2024. Blue stripes are years cooler than the station's own mean of 19.0 C (66.1 F); red stripes are warmer. The coolest year was 1988, at 17.9 C (64.2 F), and the warmest was 2012, at 20.4 C (68.8 F). The strongest colour marks a difference of 1.5 C (2.7 F).
Annual mean temperature at Sullivans Is as warming stripes, 1952 to 2024
YearAnnual mean temperatureDifference from the station mean
195219.3 C+0.33 C
195319.4 C+0.48 C
195419.3 C+0.34 C
195519.1 C+0.10 C
195619.3 C+0.38 C
195719.3 C+0.30 C
195818.2 C-0.81 C
195919.2 C+0.26 C
196018.3 C-0.69 C
196118.8 C-0.15 C
196218.5 C-0.48 C
196318.2 C-0.75 C
196418.6 C-0.35 C
196518.9 C-0.04 C
196618.2 C-0.74 C
196718.5 C-0.50 C
196818.1 C-0.90 C
197418.6 C-0.41 C
197718.6 C-0.41 C
197818.5 C-0.44 C
198118.2 C-0.72 C
198318.8 C-0.19 C
198419.3 C+0.29 C
198519.6 C+0.63 C
198619.9 C+0.92 C
198817.9 C-1.06 C
199218.6 C-0.34 C
199318.5 C-0.47 C
199419.1 C+0.18 C
199618.8 C-0.21 C
199718.7 C-0.26 C
199820.0 C+0.99 C
200119.1 C+0.09 C
200219.5 C+0.54 C
200518.4 C-0.60 C
200619.2 C+0.20 C
200718.8 C-0.19 C
200818.0 C-0.97 C
201018.5 C-0.46 C
201120.0 C+1.02 C
201220.4 C+1.46 C
201419.1 C+0.09 C
201519.8 C+0.80 C
201619.9 C+0.90 C
202319.9 C+0.94 C
202419.6 C+0.68 C

The annual mean temperature here has risen by 0.10 C (0.02 to 0.18) per decade over 1952 to 2024. In Fahrenheit: 0.17 F (0.03 to 0.32) per decade. The slope is a straight line fitted to 46 complete years; the brackets give its 95 percent interval.

Fitted temperature trends per decade at Sullivans Is
MeasurePer decade (C)Per decade (F)PeriodComplete yearsReading
Annual mean temperature0.10 C (0.02 to 0.18) per decade0.17 F (0.03 to 0.32) per decade1952 to 202446Rise
Mean daily maximum0.2 C (0.1 to 0.3) per decade0.3 F (0.2 to 0.5) per decade1952 to 202446Rise
Mean daily minimum0.00 C (-0.14 to 0.14) per decade0.00 F (-0.25 to 0.24) per decade1952 to 202446Not clearly different from zero

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

1951 to 2026
Yearly extremes at Sullivans Is: the record and the median year
MeasureRecordYear of the recordMedian yearYears with a value
Hottest day (TXx)40.6 C (105.1 F)195236.7 C (98.1 F)76
Coldest night (TNn)-12.8 C (9.0 F)1985-6.1 C (21.0 F)76
Wettest day (Rx1day)249.7 mm (9.8 in)199086.4 mm (3.4 in)76
Wettest five days (Rx5day)327.9 mm (12.9 in)1990122.1 mm (4.8 in)76
Longest dry spell (CDD)47 days202621 days76

Hottest day (TXx)

Hottest day (TXx) at Sullivans Is by year The hottest day of the year at Sullivans Is, 1951 to 2026. The record is 40.6 C (105.1 F) in 1952, marked on the chart; the median year is 36.7 C (98.1 F). 3032.53537.54042.51960198020002020Record: 40.6 C (105.1 F) in 1952
The hottest day of the year at Sullivans Is, 1951 to 2026. The record is 40.6 C (105.1 F) in 1952, marked on the chart; the median year is 36.7 C (98.1 F).
Hottest day (TXx) at Sullivans Is by year
YearHottest day (TXx)
195136.1 C (97.0 F)
195240.6 C (105.1 F)
195337.2 C (99.0 F)
195438.9 C (102.0 F)
195535.6 C (96.1 F)
195637.2 C (99.0 F)
195735.6 C (96.1 F)
195838.3 C (100.9 F)
195939.4 C (102.9 F)
196035.0 C (95.0 F)
196137.8 C (100.0 F)
196236.1 C (97.0 F)
196335.0 C (95.0 F)
196437.2 C (99.0 F)
196536.1 C (97.0 F)
196636.7 C (98.1 F)
196734.4 C (93.9 F)
196837.8 C (100.0 F)
196935.0 C (95.0 F)
197036.1 C (97.0 F)
197136.7 C (98.1 F)
197236.7 C (98.1 F)
197333.3 C (91.9 F)
197435.0 C (95.0 F)
197534.4 C (93.9 F)
197635.0 C (95.0 F)
197737.2 C (99.0 F)
197835.6 C (96.1 F)
197936.7 C (98.1 F)
198031.1 C (88.0 F)
198138.3 C (100.9 F)
198236.1 C (97.0 F)
198337.8 C (100.0 F)
198435.6 C (96.1 F)
198538.9 C (102.0 F)
198637.2 C (99.0 F)
198736.7 C (98.1 F)
198835.6 C (96.1 F)
198938.3 C (100.9 F)
199038.3 C (100.9 F)
199136.1 C (97.0 F)
199237.8 C (100.0 F)
199337.2 C (99.0 F)
199436.1 C (97.0 F)
199536.7 C (98.1 F)
199636.1 C (97.0 F)
199735.0 C (95.0 F)
199837.8 C (100.0 F)
199939.4 C (102.9 F)
200037.8 C (100.0 F)
200135.0 C (95.0 F)
200237.8 C (100.0 F)
200336.7 C (98.1 F)
200437.2 C (99.0 F)
200537.2 C (99.0 F)
200636.7 C (98.1 F)
200736.7 C (98.1 F)
200837.2 C (99.0 F)
200937.2 C (99.0 F)
201038.3 C (100.9 F)
201139.4 C (102.9 F)
201236.7 C (98.1 F)
201336.1 C (97.0 F)
201437.2 C (99.0 F)
201536.7 C (98.1 F)
201637.8 C (100.0 F)
201736.7 C (98.1 F)
201836.7 C (98.1 F)
201937.8 C (100.0 F)
202036.1 C (97.0 F)
202135.0 C (95.0 F)
202235.6 C (96.1 F)
202335.6 C (96.1 F)
202433.9 C (93.0 F)
202532.8 C (91.0 F)
202636.1 C (97.0 F)

Coldest night (TNn)

Coldest night (TNn) at Sullivans Is by year The coldest night of the year at Sullivans Is, 1951 to 2026. The record is -12.8 C (9.0 F) in 1985, marked on the chart; the median year is -6.1 C (21.0 F). -15-10-5051960198020002020Record: -12.8 C (9.0 F) in 1985
The coldest night of the year at Sullivans Is, 1951 to 2026. The record is -12.8 C (9.0 F) in 1985, marked on the chart; the median year is -6.1 C (21.0 F).
Coldest night (TNn) at Sullivans Is by year
YearColdest night (TNn)
1951-3.3 C (26.1 F)
1952-3.3 C (26.1 F)
1953-4.4 C (24.1 F)
1954-4.4 C (24.1 F)
1955-6.1 C (21.0 F)
1956-2.2 C (28.0 F)
1957-6.7 C (19.9 F)
1958-8.3 C (17.1 F)
1959-6.7 C (19.9 F)
1960-5.0 C (23.0 F)
1961-5.6 C (21.9 F)
1962-11.1 C (12.0 F)
1963-4.4 C (24.1 F)
1964-5.0 C (23.0 F)
1965-2.8 C (27.0 F)
1966-10.6 C (12.9 F)
1967-6.7 C (19.9 F)
1968-5.0 C (23.0 F)
1969-3.9 C (25.0 F)
1970-11.1 C (12.0 F)
1971-7.2 C (19.0 F)
1972-6.7 C (19.9 F)
1973-11.1 C (12.0 F)
1974-6.1 C (21.0 F)
1975-7.2 C (19.0 F)
1976-6.1 C (21.0 F)
1977-8.3 C (17.1 F)
1978-9.4 C (15.1 F)
1979-0.6 C (30.9 F)
1980-7.2 C (19.0 F)
1981-8.3 C (17.1 F)
1982-10.6 C (12.9 F)
1983-10.6 C (12.9 F)
1984-6.7 C (19.9 F)
1985-12.8 C (9.0 F)
1986-10.0 C (14.0 F)
1987-1.7 C (28.9 F)
1988-5.0 C (23.0 F)
1989-8.3 C (17.1 F)
1990-0.6 C (30.9 F)
1991-2.8 C (27.0 F)
1992-3.3 C (26.1 F)
1993-3.9 C (25.0 F)
1994-11.1 C (12.0 F)
1995-6.7 C (19.9 F)
1996-9.4 C (15.1 F)
1997-5.6 C (21.9 F)
1998-7.8 C (18.0 F)
1999-5.0 C (23.0 F)
2000-11.7 C (10.9 F)
2001-10.0 C (14.0 F)
2002-4.4 C (24.1 F)
2003-7.2 C (19.0 F)
2004-4.4 C (24.1 F)
2005-6.1 C (21.0 F)
2006-3.9 C (25.0 F)
2007-6.7 C (19.9 F)
2008-6.1 C (21.0 F)
2009-8.3 C (17.1 F)
2010-6.7 C (19.9 F)
2011-4.4 C (24.1 F)
2012-3.9 C (25.0 F)
2013-3.9 C (25.0 F)
2014-8.3 C (17.1 F)
2015-8.9 C (16.0 F)
2016-3.3 C (26.1 F)
2017-3.9 C (25.0 F)
2018-6.7 C (19.9 F)
2019-0.6 C (30.9 F)
2020-6.7 C (19.9 F)
2021-3.3 C (26.1 F)
2022-7.2 C (19.0 F)
20231.1 C (34.0 F)
2024-4.4 C (24.1 F)
2025-5.0 C (23.0 F)
2026-6.1 C (21.0 F)

Wettest day (Rx1day)

Wettest day (Rx1day) at Sullivans Is by year The wettest day of the year at Sullivans Is, 1951 to 2026. The record is 249.7 mm (9.8 in) in 1990, marked on the chart; the median year is 86.4 mm (3.4 in). 01002003001960198020002020Record: 249.7 mm (9.8 in) in 1990
The wettest day of the year at Sullivans Is, 1951 to 2026. The record is 249.7 mm (9.8 in) in 1990, marked on the chart; the median year is 86.4 mm (3.4 in).
Wettest day (Rx1day) at Sullivans Is by year
YearWettest day (Rx1day)
195183.3 mm (3.3 in)
195272.1 mm (2.8 in)
1953153.7 mm (6.1 in)
1954120.9 mm (4.8 in)
195577.7 mm (3.1 in)
195648.8 mm (1.9 in)
195771.9 mm (2.8 in)
195878.2 mm (3.1 in)
195989.9 mm (3.5 in)
196099.6 mm (3.9 in)
1961120.9 mm (4.8 in)
196277.0 mm (3.0 in)
196393.5 mm (3.7 in)
1964121.9 mm (4.8 in)
1965184.2 mm (7.3 in)
196695.0 mm (3.7 in)
196776.2 mm (3.0 in)
196886.9 mm (3.4 in)
1969192.3 mm (7.6 in)
197042.2 mm (1.7 in)
197199.1 mm (3.9 in)
197249.8 mm (2.0 in)
197356.9 mm (2.2 in)
197488.1 mm (3.5 in)
1975100.3 mm (3.9 in)
1976165.1 mm (6.5 in)
197769.9 mm (2.8 in)
197899.1 mm (3.9 in)
1979114.3 mm (4.5 in)
198050.8 mm (2.0 in)
1981110.5 mm (4.4 in)
1982101.6 mm (4.0 in)
198361.5 mm (2.4 in)
1984118.1 mm (4.6 in)
198568.6 mm (2.7 in)
198663.5 mm (2.5 in)
198756.9 mm (2.2 in)
198873.7 mm (2.9 in)
198963.5 mm (2.5 in)
1990249.7 mm (9.8 in)
199151.3 mm (2.0 in)
199290.7 mm (3.6 in)
199383.8 mm (3.3 in)
1994190.5 mm (7.5 in)
199563.5 mm (2.5 in)
1996152.4 mm (6.0 in)
1997132.6 mm (5.2 in)
1998153.4 mm (6.0 in)
199957.2 mm (2.3 in)
200050.0 mm (2.0 in)
200186.9 mm (3.4 in)
2002119.4 mm (4.7 in)
200352.3 mm (2.1 in)
200459.7 mm (2.4 in)
2005101.6 mm (4.0 in)
200660.2 mm (2.4 in)
200754.6 mm (2.1 in)
2008184.2 mm (7.3 in)
200958.4 mm (2.3 in)
2010104.1 mm (4.1 in)
201178.7 mm (3.1 in)
201286.4 mm (3.4 in)
201379.2 mm (3.1 in)
2014106.7 mm (4.2 in)
2015110.5 mm (4.4 in)
201688.6 mm (3.5 in)
2017101.6 mm (4.0 in)
201859.7 mm (2.4 in)
201963.5 mm (2.5 in)
202055.9 mm (2.2 in)
202161.0 mm (2.4 in)
2022101.6 mm (4.0 in)
202378.7 mm (3.1 in)
202486.4 mm (3.4 in)
2025165.9 mm (6.5 in)
202654.6 mm (2.1 in)

Wettest five days (Rx5day)

Wettest five days (Rx5day) at Sullivans Is by year The wettest five days of the year at Sullivans Is, 1951 to 2026. The record is 327.9 mm (12.9 in) in 1990, marked on the chart; the median year is 122.1 mm (4.8 in). 01002003004001960198020002020Record: 327.9 mm (12.9 in) in 1990
The wettest five days of the year at Sullivans Is, 1951 to 2026. The record is 327.9 mm (12.9 in) in 1990, marked on the chart; the median year is 122.1 mm (4.8 in).
Wettest five days (Rx5day) at Sullivans Is by year
YearWettest five days (Rx5day)
1951150.9 mm (5.9 in)
1952103.7 mm (4.1 in)
1953195.7 mm (7.7 in)
1954121.7 mm (4.8 in)
1955110.3 mm (4.3 in)
195665.5 mm (2.6 in)
1957164.1 mm (6.5 in)
195883.8 mm (3.3 in)
1959131.8 mm (5.2 in)
1960100.7 mm (4.0 in)
1961122.4 mm (4.8 in)
1962145.8 mm (5.7 in)
1963114.7 mm (4.5 in)
1964172.4 mm (6.8 in)
1965299.0 mm (11.8 in)
1966118.1 mm (4.6 in)
1967139.3 mm (5.5 in)
1968223.0 mm (8.8 in)
1969252.5 mm (9.9 in)
197058.4 mm (2.3 in)
1971185.2 mm (7.3 in)
197290.2 mm (3.6 in)
1973101.6 mm (4.0 in)
1974145.2 mm (5.7 in)
1975127.0 mm (5.0 in)
1976192.3 mm (7.6 in)
1977104.2 mm (4.1 in)
1978142.7 mm (5.6 in)
1979144.5 mm (5.7 in)
198092.7 mm (3.6 in)
1981155.4 mm (6.1 in)
1982129.1 mm (5.1 in)
198388.3 mm (3.5 in)
1984123.7 mm (4.9 in)
1985109.8 mm (4.3 in)
1986115.9 mm (4.6 in)
198772.1 mm (2.8 in)
1988150.4 mm (5.9 in)
198978.1 mm (3.1 in)
1990327.9 mm (12.9 in)
199177.7 mm (3.1 in)
1992109.2 mm (4.3 in)
1993126.0 mm (5.0 in)
1994218.2 mm (8.6 in)
199577.7 mm (3.1 in)
1996109.2 mm (4.3 in)
1997222.5 mm (8.8 in)
1998156.5 mm (6.2 in)
199971.7 mm (2.8 in)
200086.1 mm (3.4 in)
2001111.6 mm (4.4 in)
2002151.7 mm (6.0 in)
200379.2 mm (3.1 in)
200497.8 mm (3.9 in)
2005105.4 mm (4.1 in)
200690.0 mm (3.5 in)
2007102.3 mm (4.0 in)
2008199.5 mm (7.9 in)
2009124.5 mm (4.9 in)
2010179.6 mm (7.1 in)
2011113.6 mm (4.5 in)
2012131.0 mm (5.2 in)
2013166.4 mm (6.6 in)
2014135.9 mm (5.4 in)
2015138.7 mm (5.5 in)
2016146.0 mm (5.7 in)
2017171.2 mm (6.7 in)
2018115.7 mm (4.6 in)
2019114.0 mm (4.5 in)
202091.6 mm (3.6 in)
202166.5 mm (2.6 in)
2022106.9 mm (4.2 in)
2023172.3 mm (6.8 in)
202494.5 mm (3.7 in)
2025267.0 mm (10.5 in)
202695.5 mm (3.8 in)

Longest dry spell (CDD)

Longest dry spell (CDD) at Sullivans Is by year The longest dry spell of the year at Sullivans Is, 1951 to 2026. The record is 47 days in 2026, marked on the chart; the median year is 21 days. 02040601960198020002020Record: 47 days in 2026
The longest dry spell of the year at Sullivans Is, 1951 to 2026. The record is 47 days in 2026, marked on the chart; the median year is 21 days.
Longest dry spell (CDD) at Sullivans Is by year
YearLongest dry spell (CDD)
195123 days
195225 days
195317 days
195423 days
195535 days
195624 days
195716 days
195817 days
195913 days
196021 days
196138 days
196217 days
196324 days
196425 days
196521 days
196625 days
196721 days
196825 days
196914 days
197022 days
197140 days
197228 days
197319 days
197431 days
197516 days
197630 days
197730 days
197825 days
197922 days
198021 days
198122 days
198214 days
198321 days
198419 days
198514 days
198625 days
198724 days
198816 days
198918 days
199017 days
199123 days
199223 days
199318 days
199416 days
199527 days
199617 days
199715 days
199825 days
199923 days
200031 days
200116 days
200220 days
200319 days
200416 days
200522 days
200623 days
200722 days
200815 days
200924 days
201018 days
20111 day
201219 days
201312 days
201415 days
201514 days
201630 days
201717 days
201811 days
201916 days
202015 days
202122 days
202235 days
202317 days
202425 days
202519 days
202647 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

42 years with a frost

Across 42 years with a frost, the median last spring frost at Sullivans Is falls on 27 February and the median first autumn frost on 7 December, which leaves a median of 282 days between them.

Fitted over all years, the growing season changes by -1.9 days per decade at this station.

Frost dates and growing season at Sullivans Is
MeasureMedian, all yearsEarliest periodRecent period (1964 to 2024)Recent against earliestFitted trend
Last spring frost27 Februaryn/a6 Marchn/a+1.8 days per decade
First autumn frost7 Decembern/a7 Decembern/a-0.1 days per decade
Growing days282 daysn/a275 daysn/a-1.9 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

48 years, 1952 to 2024

A day with at least 87.6 mm (3.4 in) of rain is expected about once in 2 years. A day with at least 243.5 mm (9.6 in) of rain is expected about once in 100 years.

Rainfall return levels at Sullivans Is: the daily rain expected about once in a given number of years
Expected about once inA day with at leastNote
2 years87.6 mm (3.4 in)
5 years118.8 mm (4.7 in)
10 years143.1 mm (5.6 in)
25 years178.8 mm (7.0 in)
50 years209.3 mm (8.2 in)Longer than the 48 years of record
100 years243.5 mm (9.6 in)Longer than the 48 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, 48 years of values from 1952 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: 249.7 mm (9.8 in) in 1990; 190.5 mm (7.5 in) in 1994; 184.2 mm (7.3 in) in 1965.

Station Changes

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

Climate Twins

1998 to 2024 against 1961 to 1990

Over 1998 to 2024, Sullivans Is had a mean temperature of 19.3 C (66.8 F) and 1,109.7 mm (43.7 in) of rain a year. The 3 stations whose 1961 to 1990 climate was closest to that are Fitzgerald (United States, 340 km away), Ft Stewart (United States, 193 km away) and Glennville 3NW (United States, 215 km away).

Climate twins of Sullivans Is: stations whose 1961 to 1990 climate is closest to its 1998 to 2024 climate
Twin stationCountryDistance awayMean temperature, 1961-1990Rain a year, 1961-1990Climate difference
FitzgeraldUnited States340 km (211 mi)19.2 C (66.6 F)1,150.8 mm (45.3 in)0.56
Ft StewartUnited States193 km (120 mi)19.5 C (67.1 F)1,191.0 mm (46.9 in)0.71
Glennville 3NWUnited States215 km (134 mi)19.3 C (66.7 F)1,203.9 mm (47.4 in)0.73

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 Sullivans Is standing records by year: CSV or JSON. Field meanings are on the data page.
  • Data for Sullivans Is 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).