Built 2026-10-15 (15 October 2026)

S Hero Weather Records (USC00437607)

Record envelope, standing records and threshold days for S Hero (USC00437607), Vermont, United States, with 56 years of record.

Key Facts for S Hero

  • S Hero (USC00437607) is a weather station in Vermont, United States at 44.63 latitude and -73.30 longitude, 33 m (108 ft) above sea level.
  • The station reports from 1969 to 2024, 56 years of record.
  • 1,464 records set at S Hero still stand.
  • Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
  • S Hero set a daily record low maximum temperature of 15.0 C (59.0 F) on 8 September 2024.

About the Station

  • Location: Vermont, United States, 44.63 latitude, -73.30 longitude.
  • Elevation: 33 m (108 ft).
  • Period of record: 1969 to 2024, 56 years.
  • Eligible elements: tmax, tmin, prcp, snow, snwd.

Daily Record Envelope and 2026

0 days at or beyond a record
Daily record high and record low at S Hero, with 2026 drawn through them The band shows the record high and record low for each calendar day at S Hero. 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 S Hero. 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 S Hero, with 2026 drawn through them
MonthHighest record highLowest record low2026 highest maximum2026 lowest minimum
Jan16.1 C (61.0 F)-35.0 C (-31.0 F)n/an/a
Feb16.7 C (62.1 F)-32.8 C (-27.0 F)n/an/a
Mar27.2 C (81.0 F)-26.7 C (-16.1 F)n/an/a
Apr31.1 C (88.0 F)-13.3 C (8.1 F)n/an/a
May34.4 C (93.9 F)-3.3 C (26.1 F)n/an/a
Jun36.7 C (98.1 F)1.1 C (34.0 F)n/an/a
Jul36.7 C (98.1 F)2.8 C (37.0 F)n/an/a
Aug37.2 C (99.0 F)5.0 C (41.0 F)n/an/a
Sep36.1 C (97.0 F)-1.7 C (28.9 F)n/an/a
Oct28.3 C (82.9 F)-6.1 C (21.0 F)n/an/a
Nov21.7 C (71.1 F)-16.1 C (3.0 F)n/an/a
Dec18.9 C (66.0 F)-30.0 C (-22.0 F)n/an/a

Which Years Hold Standing Records

1,464 standing records
Standing records at S Hero by the year they were set 1,464 records at S Hero still stand. 1979 holds the most, with 54. 02040601969: 61970: 311971: 161972: 321973: 291974: 401975: 281976: 411977: 251978: 261979: 541980: 211981: 431982: 261983: 201984: 311985: 161986: 321987: 351988: 321989: 431990: 441991: 321992: 301993: 361994: 261995: 241996: 181997: 141998: 101999: 292000: 232001: 252002: 372003: 202004: 162005: 212006: 142007: 272008: 192009: 142010: 322011: 192012: 352013: 272014: 312015: 402016: 232017: 432018: 352019: 172020: 112021: 102022: 152023: 92024: 111969197519811987199319992005201120172023
1,464 records at S Hero still stand. 1979 holds the most, with 54.
Standing records at S Hero by the year they were set
Year setStanding records
19696
197031
197116
197232
197329
197440
197528
197641
197725
197826
197954
198021
198143
198226
198320
198431
198516
198632
198735
198832
198943
199044
199132
199230
199336
199426
199524
199618
199714
199810
199929
200023
200125
200237
200320
200416
200521
200614
200727
200819
200914
201032
201119
201235
201327
201431
201540
201623
201743
201835
201917
202011
202110
202215
20239
202411

All-Time Record Progression

4 new records
When S Hero set new all-time records 4 all-time records were set at S Hero between 9 July 2008 and 2 July 2018. Each dot is a new record. Record daily precipitationRecord daily snowfallRecord high minimum temperature9 July 2008: Record daily precipitation 76.5 mm (3.0 in)7 March 2011: Record daily snowfall 48.3 cm (19.0 in)28 August 2011: Record daily precipitation 102.1 mm (4.0 in)2 July 2018: Record high minimum temperature 25.6 C (78.1 F)20102015
4 all-time records were set at S Hero between 9 July 2008 and 2 July 2018. Each dot is a new record.
When S Hero set new all-time records
DateKindDetail
2008-07-09Record daily precipitationRecord daily precipitation 76.5 mm (3.0 in)
2011-03-07Record daily snowfallRecord daily snowfall 48.3 cm (19.0 in)
2011-08-28Record daily precipitationRecord daily precipitation 102.1 mm (4.0 in)
2018-07-02Record high minimum temperatureRecord high minimum temperature 25.6 C (78.1 F)

Wettest Day of Each Month

Aug: 102.1 mm (4.0 in)
Record daily precipitation for each month at S Hero The wettest day on record for each calendar month at S Hero. The most was 102.1 mm (4.0 in) on 28 August 2011. 050100150 Jan: 63.8 mm (2.5 in), 8 January 1998 Jan Feb: 31.5 mm (1.2 in), 24 February 2010 Feb Mar: 63.2 mm (2.5 in), 7 March 2011 Mar Apr: 37.3 mm (1.5 in), 23 April 2012 Apr May: 49.0 mm (1.9 in), 9 May 2000 May Jun: 86.4 mm (3.4 in), 20 June 2024 Jun Jul: 76.5 mm (3.0 in), 9 July 2008 Jul Aug: 102.1 mm (4.0 in), 28 August 2011 Aug Sep: 85.9 mm (3.4 in), 5 September 2012 Sep Oct: 54.6 mm (2.1 in), 20 October 2006 Oct Nov: 71.1 mm (2.8 in), 4 November 2004 Nov Dec: 61.0 mm (2.4 in), 18 December 2023 Dec
The wettest day on record for each calendar month at S Hero. The most was 102.1 mm (4.0 in) on 28 August 2011.
Record daily precipitation for each month at S Hero
MonthRecord daily precipitation (mm)Date
Jan63.8 mm (2.5 in)8 January 1998
Feb31.5 mm (1.2 in)24 February 2010
Mar63.2 mm (2.5 in)7 March 2011
Apr37.3 mm (1.5 in)23 April 2012
May49.0 mm (1.9 in)9 May 2000
Jun86.4 mm (3.4 in)20 June 2024
Jul76.5 mm (3.0 in)9 July 2008
Aug102.1 mm (4.0 in)28 August 2011
Sep85.9 mm (3.4 in)5 September 2012
Oct54.6 mm (2.1 in)20 October 2006
Nov71.1 mm (2.8 in)4 November 2004
Dec61.0 mm (2.4 in)18 December 2023

Period of Record Coverage

1969 to 2024
Days with data per year at S Hero 56 years of record at S Hero, 1969 to 2024. 6 years have data for under 90 percent of days and are left out of rankings: 1969, 2020, 2021, 2022, 2023, 2024. 1969: 176 of 365 days1970: 358 of 365 days1971: 357 of 365 days1972: 364 of 366 days1973: 329 of 365 days1974: 356 of 365 days1975: 357 of 365 days1976: 363 of 366 days1977: 362 of 365 days1978: 364 of 365 days1979: 364 of 365 days1980: 366 of 366 days1981: 361 of 365 days1982: 364 of 365 days1983: 365 of 365 days1984: 358 of 366 days1985: 363 of 365 days1986: 365 of 365 days1987: 361 of 365 days1988: 362 of 366 days1989: 362 of 365 days1990: 363 of 365 days1991: 363 of 365 days1992: 363 of 366 days1993: 364 of 365 days1994: 361 of 365 days1995: 362 of 365 days1996: 362 of 366 days1997: 362 of 365 days1998: 360 of 365 days1999: 363 of 365 days2000: 363 of 366 days2001: 363 of 365 days2002: 359 of 365 days2003: 345 of 365 days2004: 346 of 366 days2005: 341 of 365 days2006: 350 of 365 days2007: 348 of 365 days2008: 361 of 366 days2009: 364 of 365 days2010: 362 of 365 days2011: 365 of 365 days2012: 366 of 366 days2013: 365 of 365 days2014: 365 of 365 days2015: 365 of 365 days2016: 366 of 366 days2017: 365 of 365 days2018: 365 of 365 days2019: 365 of 365 days2020: 152 of 366 days2021: 89 of 365 days2022: 310 of 365 days2023: 149 of 365 days2024: 149 of 366 days197019801990200020102020
56 years of record at S Hero, 1969 to 2024. 6 years have data for under 90 percent of days and are left out of rankings: 1969, 2020, 2021, 2022, 2023, 2024.
Days with data per year at S Hero
YearDays with dataShare of yearComplete
196917648%No
197035898%Yes
197135798%Yes
197236499%Yes
197332990%Yes
197435698%Yes
197535798%Yes
197636399%Yes
197736299%Yes
1978364100%Yes
1979364100%Yes
1980366100%Yes
198136199%Yes
1982364100%Yes
1983365100%Yes
198435898%Yes
198536399%Yes
1986365100%Yes
198736199%Yes
198836299%Yes
198936299%Yes
199036399%Yes
199136399%Yes
199236399%Yes
1993364100%Yes
199436199%Yes
199536299%Yes
199636299%Yes
199736299%Yes
199836099%Yes
199936399%Yes
200036399%Yes
200136399%Yes
200235998%Yes
200334595%Yes
200434695%Yes
200534193%Yes
200635096%Yes
200734895%Yes
200836199%Yes
2009364100%Yes
201036299%Yes
2011365100%Yes
2012366100%Yes
2013365100%Yes
2014365100%Yes
2015365100%Yes
2016366100%Yes
2017365100%Yes
2018365100%Yes
2019365100%Yes
202015242%No
20218924%No
202231085%No
202314941%No
202414941%No

Latest Records

20
Latest records at S Hero
DateStationRecordValueBeat old record byOld record stoodSignificance
8 September 2024S Hero, USdaily low max15.0 C (59.0 F)0.6 C (1.1 F)45 years19 of 100 (Routine)
22 August 2024S Hero, USdaily low max (Tie)18.9 C (66.0 F)tie30 years3 of 100 (Routine)
21 August 2024S Hero, USdaily low max15.6 C (60.1 F)1.1 C (2.0 F)42 years20 of 100 (Routine)
12 August 2024S Hero, USdaily rain14.2 mm (0.6 in)2.5 mm (0.10 in)20 years13 of 100 (Routine)
3 August 2024S Hero, USdaily high min (Tie)22.8 C (73.0 F)tie49 years4 of 100 (Routine)
1 August 2024S Hero, USdaily high min (Tie)22.2 C (72.0 F)tie49 years4 of 100 (Routine)
16 July 2024S Hero, USdaily rain21.8 mm (0.9 in)1.2 mm (0.05 in)26 years13 of 100 (Routine)
11 July 2024S Hero, USdaily rain38.1 mm (1.5 in)7.9 mm (0.31 in)1 year13 of 100 (Routine)
20 June 2024S Hero, USmonthly rain86.4 mm (3.4 in)33.3 mm (1.3 in)25 years58 of 100 (Notable)
19 June 2024S Hero, USdaily high min23.3 C (73.9 F)2.2 C (4.0 F)29 years18 of 100 (Routine)
5 June 2024S Hero, USdaily high min18.9 C (66.0 F)2.2 C (4.0 F)50 years25 of 100 (Routine)
4 June 2024S Hero, USdaily high max31.1 C (88.0 F)2.2 C (4.0 F)45 years23 of 100 (Routine)
3 June 2024S Hero, USdaily high max (Tie)30.0 C (86.0 F)tie19 years2 of 100 (Routine)
2 June 2024S Hero, USdaily high max (Tie)29.4 C (84.9 F)tie54 years5 of 100 (Routine)
28 May 2024S Hero, USdaily rain23.9 mm (0.9 in)3.8 mm (0.15 in)13 years12 of 100 (Routine)
23 May 2024S Hero, USmonthly high min (Tie)20.0 C (68.0 F)tie28 years5 of 100 (Routine)
19 May 2024S Hero, USdaily high min15.0 C (59.0 F)0.6 C (1.1 F)53 years21 of 100 (Routine)
12 April 2024S Hero, USdaily high min10.6 C (51.1 F)2.8 C (5.0 F)47 years25 of 100 (Routine)
12 April 2024S Hero, USdaily high max20.6 C (69.1 F)1.2 C (2.2 F)9 years9 of 100 (Routine)
12 April 2024S Hero, USdaily rain21.1 mm (0.8 in)0.5 mm (0.02 in)11 years8 of 100 (Routine)

Climate Trend

48 complete years, 1970 to 2019
Annual mean temperature at S Hero as warming stripes, 1970 to 2019 One stripe for each of 48 complete years at S Hero, 1970 to 2019. Blue stripes are years cooler than the station's own mean of 7.9 C (46.2 F); red stripes are warmer. The coolest year was 1972, at 6.4 C (43.6 F), and the warmest was 2012, at 10.0 C (50.0 F). The strongest colour marks a difference of 2.2 C (4.0 F). 1970: 7.1 C, -0.8 C from the station mean1971: 7.3 C, -0.6 C from the station mean1972: 6.4 C, -1.5 C from the station mean1974: 7.3 C, -0.6 C from the station mean1975: 8.2 C, +0.3 C from the station mean1976: 6.9 C, -1.0 C from the station mean1977: 7.8 C, -0.1 C from the station mean1978: 6.8 C, -1.0 C from the station mean1979: 8.0 C, +0.2 C from the station mean1980: 7.0 C, -0.8 C from the station mean1981: 8.0 C, +0.1 C from the station mean1982: 7.6 C, -0.3 C from the station mean1983: 8.2 C, +0.3 C from the station mean1984: 8.0 C, +0.1 C from the station mean1985: 7.5 C, -0.4 C from the station mean1986: 7.6 C, -0.3 C from the station mean1987: 8.1 C, +0.2 C from the station mean1988: 8.0 C, +0.1 C from the station mean1989: 7.1 C, -0.8 C from the station mean1990: 8.2 C, +0.3 C from the station mean1991: 8.5 C, +0.7 C from the station mean1992: 7.0 C, -0.9 C from the station mean1993: 7.0 C, -0.9 C from the station mean1994: 7.1 C, -0.8 C from the station mean1995: 7.9 C, 0.0 C from the station mean1996: 7.5 C, -0.3 C from the station mean1997: 7.3 C, -0.6 C from the station mean1998: 9.1 C, +1.2 C from the station mean1999: 8.9 C, +1.0 C from the station mean2000: 7.2 C, -0.7 C from the station mean2001: 8.4 C, +0.5 C from the station mean2002: 8.6 C, +0.7 C from the station mean2003: 7.5 C, -0.4 C from the station mean2004: 7.3 C, -0.5 C from the station mean2005: 8.1 C, +0.3 C from the station mean2006: 9.1 C, +1.2 C from the station mean2007: 7.6 C, -0.3 C from the station mean2008: 8.0 C, +0.1 C from the station mean2009: 7.8 C, -0.1 C from the station mean2010: 9.3 C, +1.4 C from the station mean2012: 10.0 C, +2.1 C from the station mean2013: 8.2 C, +0.4 C from the station mean2014: 7.6 C, -0.2 C from the station mean2015: 8.2 C, +0.3 C from the station mean2016: 9.1 C, +1.3 C from the station mean2017: 8.7 C, +0.9 C from the station mean2018: 8.3 C, +0.4 C from the station mean2019: 7.6 C, -0.3 C from the station mean1970197519801985199019952000200520102015
One stripe for each of 48 complete years at S Hero, 1970 to 2019. Blue stripes are years cooler than the station's own mean of 7.9 C (46.2 F); red stripes are warmer. The coolest year was 1972, at 6.4 C (43.6 F), and the warmest was 2012, at 10.0 C (50.0 F). The strongest colour marks a difference of 2.2 C (4.0 F).
Annual mean temperature at S Hero as warming stripes, 1970 to 2019
YearAnnual mean temperatureDifference from the station mean
19707.1 C-0.75 C
19717.3 C-0.61 C
19726.4 C-1.45 C
19747.3 C-0.57 C
19758.2 C+0.28 C
19766.9 C-0.95 C
19777.8 C-0.09 C
19786.8 C-1.03 C
19798.0 C+0.17 C
19807.0 C-0.83 C
19818.0 C+0.10 C
19827.6 C-0.29 C
19838.2 C+0.32 C
19848.0 C+0.09 C
19857.5 C-0.39 C
19867.6 C-0.25 C
19878.1 C+0.23 C
19888.0 C+0.09 C
19897.1 C-0.76 C
19908.2 C+0.33 C
19918.5 C+0.66 C
19927.0 C-0.85 C
19937.0 C-0.89 C
19947.1 C-0.80 C
19957.9 C-0.01 C
19967.5 C-0.34 C
19977.3 C-0.60 C
19989.1 C+1.22 C
19998.9 C+1.05 C
20007.2 C-0.72 C
20018.4 C+0.53 C
20028.6 C+0.74 C
20037.5 C-0.41 C
20047.3 C-0.53 C
20058.1 C+0.26 C
20069.1 C+1.19 C
20077.6 C-0.27 C
20088.0 C+0.15 C
20097.8 C-0.11 C
20109.3 C+1.38 C
201210.0 C+2.11 C
20138.2 C+0.37 C
20147.6 C-0.24 C
20158.2 C+0.28 C
20169.1 C+1.27 C
20178.7 C+0.86 C
20188.3 C+0.45 C
20197.6 C-0.32 C

The annual mean temperature here has risen by 0.3 C (0.1 to 0.4) per decade over 1970 to 2019. In Fahrenheit: 0.5 F (0.2 to 0.7) per decade. The slope is a straight line fitted to 48 complete years; the brackets give its 95 percent interval.

Fitted temperature trends per decade at S Hero
MeasurePer decade (C)Per decade (F)PeriodComplete yearsReading
Annual mean temperature0.3 C (0.1 to 0.4) per decade0.5 F (0.2 to 0.7) per decade1970 to 201948Rise
Mean daily maximum0.3 C (0.2 to 0.4) per decade0.5 F (0.3 to 0.8) per decade1970 to 201948Rise
Mean daily minimum0.2 C (0.1 to 0.4) per decade0.4 F (0.2 to 0.7) per decade1970 to 201948Rise

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

1969 to 2024
Yearly extremes at S Hero: the record and the median year
MeasureRecordYear of the recordMedian yearYears with a value
Hottest day (TXx)37.2 C (99.0 F)197533.6 C (92.5 F)56
Coldest night (TNn)-35.0 C (-31.0 F)1994-26.1 C (-15.0 F)56
Wettest day (Rx1day)102.1 mm (4.0 in)201146.3 mm (1.8 in)56
Wettest five days (Rx5day)131.1 mm (5.2 in)199569.9 mm (2.8 in)56
Longest dry spell (CDD)29 days200116 days56

Hottest day (TXx)

Hottest day (TXx) at S Hero by year The hottest day of the year at S Hero, 1969 to 2024. The record is 37.2 C (99.0 F) in 1975, marked on the chart; the median year is 33.6 C (92.5 F). 3032343638197019801990200020102020Record: 37.2 C (99.0 F) in 1975
The hottest day of the year at S Hero, 1969 to 2024. The record is 37.2 C (99.0 F) in 1975, marked on the chart; the median year is 33.6 C (92.5 F).
Hottest day (TXx) at S Hero by year
YearHottest day (TXx)
196932.8 C (91.0 F)
197032.8 C (91.0 F)
197132.2 C (90.0 F)
197230.6 C (87.1 F)
197333.3 C (91.9 F)
197432.2 C (90.0 F)
197537.2 C (99.0 F)
197631.1 C (88.0 F)
197735.0 C (95.0 F)
197833.3 C (91.9 F)
197935.0 C (95.0 F)
198032.8 C (91.0 F)
198134.4 C (93.9 F)
198233.9 C (93.0 F)
198333.3 C (91.9 F)
198432.2 C (90.0 F)
198532.8 C (91.0 F)
198631.7 C (89.1 F)
198733.9 C (93.0 F)
198835.6 C (96.1 F)
198933.9 C (93.0 F)
199033.9 C (93.0 F)
199135.0 C (95.0 F)
199232.2 C (90.0 F)
199333.9 C (93.0 F)
199435.6 C (96.1 F)
199536.7 C (98.1 F)
199633.3 C (91.9 F)
199733.3 C (91.9 F)
199831.7 C (89.1 F)
199935.6 C (96.1 F)
200030.0 C (86.0 F)
200136.1 C (97.0 F)
200236.1 C (97.0 F)
200334.4 C (93.9 F)
200430.6 C (87.1 F)
200533.9 C (93.0 F)
200632.8 C (91.0 F)
200734.4 C (93.9 F)
200832.8 C (91.0 F)
200932.2 C (90.0 F)
201035.6 C (96.1 F)
201135.0 C (95.0 F)
201236.7 C (98.1 F)
201334.4 C (93.9 F)
201432.2 C (90.0 F)
201534.4 C (93.9 F)
201635.0 C (95.0 F)
201735.0 C (95.0 F)
201836.7 C (98.1 F)
201934.4 C (93.9 F)
202033.3 C (91.9 F)
202132.8 C (91.0 F)
202232.8 C (91.0 F)
202332.8 C (91.0 F)
202431.7 C (89.1 F)

Coldest night (TNn)

Coldest night (TNn) at S Hero by year The coldest night of the year at S Hero, 1969 to 2024. The record is -35.0 C (-31.0 F) in 1994, marked on the chart; the median year is -26.1 C (-15.0 F). -40-30-20-100197019801990200020102020Record: -35.0 C (-31.0 F) in 1994
The coldest night of the year at S Hero, 1969 to 2024. The record is -35.0 C (-31.0 F) in 1994, marked on the chart; the median year is -26.1 C (-15.0 F).
Coldest night (TNn) at S Hero by year
YearColdest night (TNn)
1969-22.2 C (-8.0 F)
1970-26.1 C (-15.0 F)
1971-24.4 C (-11.9 F)
1972-30.0 C (-22.0 F)
1973-27.2 C (-17.0 F)
1974-30.6 C (-23.1 F)
1975-23.3 C (-9.9 F)
1976-27.8 C (-18.0 F)
1977-28.3 C (-18.9 F)
1978-24.4 C (-11.9 F)
1979-28.9 C (-20.0 F)
1980-30.0 C (-22.0 F)
1981-32.2 C (-26.0 F)
1982-26.1 C (-15.0 F)
1983-25.6 C (-14.1 F)
1984-24.4 C (-11.9 F)
1985-24.4 C (-11.9 F)
1986-26.1 C (-15.0 F)
1987-26.1 C (-15.0 F)
1988-26.7 C (-16.1 F)
1989-27.2 C (-17.0 F)
1990-22.8 C (-9.0 F)
1991-22.8 C (-9.0 F)
1992-25.0 C (-13.0 F)
1993-32.8 C (-27.0 F)
1994-35.0 C (-31.0 F)
1995-26.7 C (-16.1 F)
1996-27.2 C (-17.0 F)
1997-23.9 C (-11.0 F)
1998-25.0 C (-13.0 F)
1999-30.6 C (-23.1 F)
2000-25.0 C (-13.0 F)
2001-21.7 C (-7.1 F)
2002-18.3 C (-0.9 F)
2003-26.7 C (-16.1 F)
2004-27.2 C (-17.0 F)
2005-26.1 C (-15.0 F)
2006-16.7 C (1.9 F)
2007-26.7 C (-16.1 F)
2008-24.4 C (-11.9 F)
2009-27.2 C (-17.0 F)
2010-20.6 C (-5.1 F)
2011-28.3 C (-18.9 F)
2012-19.4 C (-2.9 F)
2013-23.9 C (-11.0 F)
2014-26.7 C (-16.1 F)
2015-27.2 C (-17.0 F)
2016-27.2 C (-17.0 F)
2017-24.4 C (-11.9 F)
2018-27.2 C (-17.0 F)
2019-25.0 C (-13.0 F)
2020-25.0 C (-13.0 F)
2021-12.2 C (10.0 F)
2022-21.7 C (-7.1 F)
2023-8.3 C (17.1 F)
2024-8.9 C (16.0 F)

Wettest day (Rx1day)

Wettest day (Rx1day) at S Hero by year The wettest day of the year at S Hero, 1969 to 2024. The record is 102.1 mm (4.0 in) in 2011, marked on the chart; the median year is 46.3 mm (1.8 in). 20406080100120197019801990200020102020Record: 102.1 mm (4.0 in) in 2011
The wettest day of the year at S Hero, 1969 to 2024. The record is 102.1 mm (4.0 in) in 2011, marked on the chart; the median year is 46.3 mm (1.8 in).
Wettest day (Rx1day) at S Hero by year
YearWettest day (Rx1day)
196939.4 mm (1.6 in)
197038.1 mm (1.5 in)
197153.1 mm (2.1 in)
197230.0 mm (1.2 in)
197337.1 mm (1.5 in)
197450.5 mm (2.0 in)
197536.1 mm (1.4 in)
197634.8 mm (1.4 in)
197741.1 mm (1.6 in)
197839.4 mm (1.6 in)
197965.0 mm (2.6 in)
198028.7 mm (1.1 in)
198146.5 mm (1.8 in)
198248.0 mm (1.9 in)
198338.4 mm (1.5 in)
198446.5 mm (1.8 in)
198545.7 mm (1.8 in)
198635.3 mm (1.4 in)
198751.1 mm (2.0 in)
198841.4 mm (1.6 in)
198950.8 mm (2.0 in)
199031.8 mm (1.3 in)
199147.0 mm (1.9 in)
199233.5 mm (1.3 in)
199339.1 mm (1.5 in)
199438.6 mm (1.5 in)
199574.7 mm (2.9 in)
199657.7 mm (2.3 in)
199739.1 mm (1.5 in)
199863.8 mm (2.5 in)
199963.2 mm (2.5 in)
200049.0 mm (1.9 in)
200141.1 mm (1.6 in)
200246.5 mm (1.8 in)
200351.6 mm (2.0 in)
200471.1 mm (2.8 in)
200565.3 mm (2.6 in)
200654.6 mm (2.1 in)
200740.4 mm (1.6 in)
200876.5 mm (3.0 in)
200932.0 mm (1.3 in)
201053.3 mm (2.1 in)
2011102.1 mm (4.0 in)
201285.9 mm (3.4 in)
201347.8 mm (1.9 in)
201446.0 mm (1.8 in)
201552.6 mm (2.1 in)
201645.2 mm (1.8 in)
201744.7 mm (1.8 in)
201846.7 mm (1.8 in)
201941.1 mm (1.6 in)
202026.7 mm (1.1 in)
202141.9 mm (1.6 in)
202226.9 mm (1.1 in)
202361.0 mm (2.4 in)
202486.4 mm (3.4 in)

Wettest five days (Rx5day)

Wettest five days (Rx5day) at S Hero by year The wettest five days of the year at S Hero, 1969 to 2024. The record is 131.1 mm (5.2 in) in 1995, marked on the chart; the median year is 69.9 mm (2.8 in). 255075100125150197019801990200020102020Record: 131.1 mm (5.2 in) in 1995
The wettest five days of the year at S Hero, 1969 to 2024. The record is 131.1 mm (5.2 in) in 1995, marked on the chart; the median year is 69.9 mm (2.8 in).
Wettest five days (Rx5day) at S Hero by year
YearWettest five days (Rx5day)
196955.1 mm (2.2 in)
197064.5 mm (2.5 in)
197162.0 mm (2.4 in)
197251.6 mm (2.0 in)
197378.0 mm (3.1 in)
197451.3 mm (2.0 in)
197552.0 mm (2.0 in)
197667.9 mm (2.7 in)
197769.6 mm (2.7 in)
197886.1 mm (3.4 in)
197977.0 mm (3.0 in)
198046.0 mm (1.8 in)
198180.7 mm (3.2 in)
198274.2 mm (2.9 in)
198361.5 mm (2.4 in)
198480.5 mm (3.2 in)
198560.4 mm (2.4 in)
198649.1 mm (1.9 in)
198772.4 mm (2.9 in)
198856.7 mm (2.2 in)
198964.6 mm (2.5 in)
199061.5 mm (2.4 in)
199155.1 mm (2.2 in)
199262.3 mm (2.5 in)
199370.2 mm (2.8 in)
199463.8 mm (2.5 in)
1995131.1 mm (5.2 in)
1996117.1 mm (4.6 in)
199755.0 mm (2.2 in)
1998113.3 mm (4.5 in)
1999102.6 mm (4.0 in)
200086.1 mm (3.4 in)
200156.2 mm (2.2 in)
200298.6 mm (3.9 in)
2003120.8 mm (4.8 in)
200485.1 mm (3.4 in)
2005124.7 mm (4.9 in)
200694.1 mm (3.7 in)
2007100.6 mm (4.0 in)
200889.7 mm (3.5 in)
200957.9 mm (2.3 in)
201099.9 mm (3.9 in)
2011105.9 mm (4.2 in)
201297.6 mm (3.8 in)
2013112.2 mm (4.4 in)
201474.7 mm (2.9 in)
201584.3 mm (3.3 in)
201656.9 mm (2.2 in)
201788.6 mm (3.5 in)
201866.0 mm (2.6 in)
201948.4 mm (1.9 in)
202040.2 mm (1.6 in)
202146.9 mm (1.8 in)
202235.8 mm (1.4 in)
202372.6 mm (2.9 in)
202446.4 mm (1.8 in)

Longest dry spell (CDD)

Longest dry spell (CDD) at S Hero by year The longest dry spell of the year at S Hero, 1969 to 2024. The record is 29 days in 2001, marked on the chart; the median year is 16 days. 0102030197019801990200020102020Record: 29 days in 2001
The longest dry spell of the year at S Hero, 1969 to 2024. The record is 29 days in 2001, marked on the chart; the median year is 16 days.
Longest dry spell (CDD) at S Hero by year
YearLongest dry spell (CDD)
196915 days
197025 days
197113 days
197213 days
197311 days
197412 days
197518 days
197622 days
197721 days
197823 days
197926 days
198013 days
198114 days
198225 days
198315 days
198417 days
198514 days
198613 days
198727 days
198821 days
198913 days
199016 days
199118 days
199214 days
199315 days
199416 days
199521 days
199612 days
199717 days
199813 days
199924 days
200013 days
200129 days
200213 days
200318 days
200421 days
200515 days
200617 days
200715 days
200817 days
200914 days
201028 days
201112 days
201223 days
201319 days
201415 days
201517 days
201616 days
201719 days
201813 days
201915 days
202013 days
20218 days
202223 days
20235 days
202411 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

48 years with a frost

Across 48 years with a frost, the median last spring frost at S Hero falls on 28 April and the median first autumn frost on 15 October, which leaves a median of 172 days between them.

Fitted over all years, the growing season changes by +3.6 days per decade at this station.

Frost dates and growing season at S Hero
MeasureMedian, all yearsEarliest periodRecent period (1989 to 2019)Recent against earliestFitted trend
Last spring frost28 Apriln/a28 Apriln/a+0.1 days per decade
First autumn frost15 Octobern/a19 Octobern/a+3.8 days per decade
Growing days172 daysn/a173 daysn/a+3.6 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

50 years, 1970 to 2019

A day with at least 45.4 mm (1.8 in) of rain is expected about once in 2 years. A day with at least 103.2 mm (4.1 in) of rain is expected about once in 100 years.

Rainfall return levels at S Hero: the daily rain expected about once in a given number of years
Expected about once inA day with at leastNote
2 years45.4 mm (1.8 in)
5 years57.8 mm (2.3 in)
10 years67.1 mm (2.6 in)
25 years80.3 mm (3.2 in)
50 years91.3 mm (3.6 in)
100 years103.2 mm (4.1 in)Longer than the 50 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, 50 years of values from 1970 to 2019.

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: 102.1 mm (4.0 in) in 2011; 85.9 mm (3.4 in) in 2012; 76.5 mm (3.0 in) in 2008.

Station Changes

2 suspected

2 changes were suspected in the annual mean temperature of S Hero, at 1990 and 2009. Each is measured against neighbouring stations.

  • Relative to 5 neighbouring stations, the station's annual mean temperature from 1990 ran 0.3 C (0.5 F) lower than in the years before (possible change).
  • Relative to 5 neighbouring stations, the station's annual mean temperature from 2009 ran 0.2 C (0.4 F) higher than in the years before (possible change).
Suspected changes in the annual mean temperature at S Hero, against neighbouring stations
YearShift (C)Shift (F)StrengthNeighbours
1990-0.2-0.4possible5
2009+0.2+0.4possible5

Possible change at the station (a move, a new instrument or a new site); the record is kept as measured. A "likely" change has a larger test statistic than a "possible" one. Neither says why the station differs from its neighbours. How changes are found, and the largest ones.

Climate Twins

2004 to 2019 against 1961 to 1990

Over 2004 to 2019, S Hero had a mean temperature of 8.3 C (47.0 F) and 931.4 mm (36.7 in) of rain a year. The 3 stations whose 1961 to 1990 climate was closest to that are Angola (United States, 1,005 km away), Whitehall (United States, 119 km away) and Waukegan (United States, 1,201 km away).

Climate twins of S Hero: stations whose 1961 to 1990 climate is closest to its 2004 to 2019 climate
Twin stationCountryDistance awayMean temperature, 1961-1990Rain a year, 1961-1990Climate difference
AngolaUnited States1,005 km (624 mi)8.5 C (47.3 F)905.2 mm (35.6 in)0.63
WhitehallUnited States119 km (74 mi)8.4 C (47.1 F)959.5 mm (37.8 in)0.74
WaukeganUnited States1,201 km (746 mi)8.5 C (47.4 F)880.5 mm (34.7 in)0.77

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 S Hero standing records by year: CSV or JSON. Field meanings are on the data page.
  • Data for S Hero 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 2026-10-13 (13 October 2026). Records are computed by this site and are not official.

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