Built 2026-10-16 (16 October 2026)

Holly Hill Weather Records (USC00384197)

Record envelope, standing records and threshold days for Holly Hill (USC00384197), South Carolina, United States, with 45 years of record.

Key Facts for Holly Hill

  • Holly Hill (USC00384197) is a weather station in South Carolina, United States at 33.33 latitude and -80.42 longitude, 31 m (100 ft) above sea level.
  • The station reports from 1957 to 2001, 45 years of record.
  • 1,464 records set at Holly Hill still stand.
  • Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
  • Holly Hill tied a daily record high maximum temperature of 26.7 C (80.1 F) on 25 February 2001.

About the Station

  • Location: South Carolina, United States, 33.33 latitude, -80.42 longitude.
  • Elevation: 31 m (100 ft).
  • Period of record: 1957 to 2001, 45 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 Holly Hill, with 2026 drawn through them The band shows the record high and record low for each calendar day at Holly Hill. The lines show the 2026 daily maximum and minimum. 0 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 Holly Hill. 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 Holly Hill, with 2026 drawn through them
MonthHighest record highLowest record low2026 highest maximum2026 lowest minimum
Jan27.2 C (81.0 F)-16.1 C (3.0 F)n/an/a
Feb30.0 C (86.0 F)-12.8 C (9.0 F)n/an/a
Mar32.2 C (90.0 F)-12.8 C (9.0 F)n/an/a
Apr34.4 C (93.9 F)-2.2 C (28.0 F)n/an/a
May38.3 C (100.9 F)1.7 C (35.1 F)n/an/a
Jun39.4 C (102.9 F)8.9 C (48.0 F)n/an/a
Jul41.1 C (106.0 F)12.8 C (55.0 F)n/an/a
Aug40.0 C (104.0 F)11.1 C (52.0 F)n/an/a
Sep38.3 C (100.9 F)2.8 C (37.0 F)n/an/a
Oct33.9 C (93.0 F)-2.8 C (27.0 F)n/an/a
Nov32.8 C (91.0 F)-7.8 C (18.0 F)n/an/a
Dec27.8 C (82.0 F)-17.2 C (1.0 F)n/an/a

Which Years Hold Standing Records

1,464 standing records
Standing records at Holly Hill by the year they were set 1,464 records at Holly Hill still stand. 1967 holds the most, with 71. 0204060801957: 31958: 481959: 501960: 451961: 391962: 551963: 551964: 441965: 441966: 511967: 711968: 301969: 381970: 421971: 391972: 561973: 311974: 471975: 241976: 301977: 291978: 191979: 341980: 611981: 421982: 361983: 341984: 421985: 521986: 511987: 191988: 191989: 301990: 171996: 31997: 411998: 41999: 422000: 362001: 111957196119651969197319771981198519891998
1,464 records at Holly Hill still stand. 1967 holds the most, with 71.
Standing records at Holly Hill by the year they were set
Year setStanding records
19573
195848
195950
196045
196139
196255
196355
196444
196544
196651
196771
196830
196938
197042
197139
197256
197331
197447
197524
197630
197729
197819
197934
198061
198142
198236
198334
198442
198552
198651
198719
198819
198930
199017
19963
199741
19984
199942
200036
200111

All-Time Record Progression

3 new records
When Holly Hill set new all-time records 3 all-time records were set at Holly Hill between 15 January 1988 and 31 December 2000. Each dot is a new record. Record daily snowfallRecord high minimum temperatureRecord low minimum temperature15 January 1988: Record daily snowfall 7.6 cm (3.0 in)6 August 1999: Record high minimum temperature 27.2 C (81.0 F)31 December 2000: Record low minimum temperature -17.2 C (1.0 F)199019952000
3 all-time records were set at Holly Hill between 15 January 1988 and 31 December 2000. Each dot is a new record.
When Holly Hill set new all-time records
DateKindDetail
1988-01-15Record daily snowfallRecord daily snowfall 7.6 cm (3.0 in)
1999-08-06Record high minimum temperatureRecord high minimum temperature 27.2 C (81.0 F)
2000-12-31Record low minimum temperatureRecord low minimum temperature -17.2 C (1.0 F)

Wettest Day of Each Month

Sep: 130.8 mm (5.1 in)
Record daily precipitation for each month at Holly Hill The wettest day on record for each calendar month at Holly Hill. The most was 130.8 mm (5.1 in) on 29 September 1959. 050100150 Jan: 69.9 mm (2.8 in), 24 January 2000 Jan Feb: 102.4 mm (4.0 in), 2 February 1973 Feb Mar: 120.7 mm (4.8 in), 6 March 1959 Mar Apr: 75.7 mm (3.0 in), 27 April 1997 Apr May: 116.8 mm (4.6 in), 19 May 1969 May Jun: 129.0 mm (5.1 in), 11 June 1973 Jun Jul: 93.2 mm (3.7 in), 14 July 1982 Jul Aug: 110.5 mm (4.4 in), 29 August 1964 Aug Sep: 130.8 mm (5.1 in), 29 September 1959 Sep Oct: 126.0 mm (5.0 in), 11 October 1990 Oct Nov: 81.8 mm (3.2 in), 22 November 1985 Nov Dec: 115.8 mm (4.6 in), 13 December 1985 Dec
The wettest day on record for each calendar month at Holly Hill. The most was 130.8 mm (5.1 in) on 29 September 1959.
Record daily precipitation for each month at Holly Hill
MonthRecord daily precipitation (mm)Date
Jan69.9 mm (2.8 in)24 January 2000
Feb102.4 mm (4.0 in)2 February 1973
Mar120.7 mm (4.8 in)6 March 1959
Apr75.7 mm (3.0 in)27 April 1997
May116.8 mm (4.6 in)19 May 1969
Jun129.0 mm (5.1 in)11 June 1973
Jul93.2 mm (3.7 in)14 July 1982
Aug110.5 mm (4.4 in)29 August 1964
Sep130.8 mm (5.1 in)29 September 1959
Oct126.0 mm (5.0 in)11 October 1990
Nov81.8 mm (3.2 in)22 November 1985
Dec115.8 mm (4.6 in)13 December 1985

Period of Record Coverage

1957 to 2001
Days with data per year at Holly Hill 40 years of record at Holly Hill, 1957 to 2001. 11 years have data for under 90 percent of days and are left out of rankings: 1957, 1968, 1977, 1978, 1988, 1990, 1996, 1998 and others. 1957: 36 of 365 days1958: 365 of 365 days1959: 361 of 365 days1960: 365 of 366 days1961: 362 of 365 days1962: 365 of 365 days1963: 365 of 365 days1964: 365 of 366 days1965: 365 of 365 days1966: 365 of 365 days1967: 365 of 365 days1968: 244 of 366 days1969: 364 of 365 days1970: 365 of 365 days1971: 365 of 365 days1972: 365 of 366 days1973: 362 of 365 days1974: 352 of 365 days1975: 363 of 365 days1976: 333 of 366 days1977: 313 of 365 days1978: 290 of 365 days1979: 344 of 365 days1980: 364 of 366 days1981: 364 of 365 days1982: 361 of 365 days1983: 362 of 365 days1984: 365 of 366 days1985: 363 of 365 days1986: 347 of 365 days1987: 359 of 365 days1988: 325 of 366 days1989: 331 of 365 days1990: 269 of 365 days1996: 58 of 366 days1997: 354 of 365 days1998: 29 of 365 days1999: 207 of 365 days2000: 169 of 366 days2001: 56 of 365 days19601965197019751980198519902000
40 years of record at Holly Hill, 1957 to 2001. 11 years have data for under 90 percent of days and are left out of rankings: 1957, 1968, 1977, 1978, 1988, 1990, 1996, 1998 and others.
Days with data per year at Holly Hill
YearDays with dataShare of yearComplete
19573610%No
1958365100%Yes
195936199%Yes
1960365100%Yes
196136299%Yes
1962365100%Yes
1963365100%Yes
1964365100%Yes
1965365100%Yes
1966365100%Yes
1967365100%Yes
196824467%No
1969364100%Yes
1970365100%Yes
1971365100%Yes
1972365100%Yes
197336299%Yes
197435296%Yes
197536399%Yes
197633391%Yes
197731386%No
197829079%No
197934494%Yes
198036499%Yes
1981364100%Yes
198236199%Yes
198336299%Yes
1984365100%Yes
198536399%Yes
198634795%Yes
198735998%Yes
198832589%No
198933191%Yes
199026974%No
19965816%No
199735497%Yes
1998298%No
199920757%No
200016946%No
20015615%No

Latest Records

20
Latest records at Holly Hill
DateStationRecordValueBeat old record byOld record stoodSignificance
25 February 2001Holly Hill, USdaily high max (Tie)26.7 C (80.1 F)tie16 years2 of 100 (Routine)
21 February 2001Holly Hill, USdaily high max28.3 C (82.9 F)0.5 C (0.9 F)4 years5 of 100 (Routine)
15 February 2001Holly Hill, USdaily high max (Tie)28.3 C (82.9 F)tie11 years1 of 100 (Routine)
12 February 2001Holly Hill, USdaily rain26.7 mm (1.1 in)4.1 mm (0.16 in)29 years15 of 100 (Routine)
9 February 2001Holly Hill, USdaily high max26.1 C (79.0 F)2.8 C (5.0 F)39 years19 of 100 (Routine)
8 February 2001Holly Hill, USdaily high max24.4 C (75.9 F)1.6 C (2.9 F)36 years16 of 100 (Routine)
7 February 2001Holly Hill, USdaily high max23.9 C (75.0 F)0.6 C (1.1 F)12 years8 of 100 (Routine)
29 January 2001Holly Hill, USdaily low min-5.6 C (21.9 F)0.6 C (1.1 F)33 years14 of 100 (Routine)
26 January 2001Holly Hill, USdaily low min-10.0 C (14.0 F)3.9 C (7.0 F)14 years14 of 100 (Routine)
19 January 2001Holly Hill, USdaily high max25.6 C (78.1 F)4.5 C (8.1 F)27 years19 of 100 (Routine)
7 January 2001Holly Hill, USdaily low min-7.2 C (19.0 F)1.1 C (2.0 F)42 years17 of 100 (Routine)
6 January 2001Holly Hill, USdaily low min-9.4 C (15.1 F)1.6 C (2.9 F)20 years12 of 100 (Routine)
4 January 2001Holly Hill, USdaily low min-13.3 C (8.1 F)6.1 C (11.0 F)24 years21 of 100 (Routine)
3 January 2001Holly Hill, USdaily low min-12.2 C (10.0 F)3.9 C (7.0 F)24 years17 of 100 (Routine)
31 December 2000Holly Hill, USall-time low min-17.2 C (1.0 F)1.1 C (2.0 F)15 years29 of 100 (Routine)
30 December 2000Holly Hill, USdaily low max5.0 C (41.0 F)1.1 C (2.0 F)30 years15 of 100 (Routine)
29 December 2000Holly Hill, USdaily low min-7.2 C (19.0 F)1.6 C (2.9 F)39 years17 of 100 (Routine)
28 December 2000Holly Hill, USdaily low max5.6 C (42.1 F)1.6 C (2.9 F)23 years12 of 100 (Routine)
27 December 2000Holly Hill, USdaily low min-7.8 C (18.0 F)0.6 C (1.1 F)17 years9 of 100 (Routine)
24 December 2000Holly Hill, USdaily low min-10.6 C (12.9 F)1.2 C (2.2 F)11 years8 of 100 (Routine)

Climate Trend

25 complete years, 1958 to 1987
Annual mean temperature at Holly Hill as warming stripes, 1958 to 1987 One stripe for each of 25 complete years at Holly Hill, 1958 to 1987. Blue stripes are years cooler than the station's own mean of 18.0 C (64.5 F); red stripes are warmer. The coolest year was 1966, at 16.4 C (61.6 F), and the warmest was 1986, at 19.5 C (67.0 F). The strongest colour marks a difference of 1.7 C (3.1 F). 1958: 17.6 C, -0.4 C from the station mean1959: 18.6 C, +0.6 C from the station mean1960: 17.7 C, -0.4 C from the station mean1961: 17.9 C, -0.1 C from the station mean1962: 17.8 C, -0.2 C from the station mean1963: 17.2 C, -0.9 C from the station mean1964: 17.5 C, -0.6 C from the station mean1965: 17.8 C, -0.2 C from the station mean1966: 16.4 C, -1.6 C from the station mean1967: 16.8 C, -1.2 C from the station mean1969: 17.1 C, -0.9 C from the station mean1970: 17.9 C, -0.1 C from the station mean1971: 18.2 C, +0.1 C from the station mean1972: 18.1 C, 0.0 C from the station mean1973: 18.1 C, 0.0 C from the station mean1974: 18.4 C, +0.4 C from the station mean1975: 18.7 C, +0.6 C from the station mean1980: 18.4 C, +0.4 C from the station mean1981: 18.2 C, +0.2 C from the station mean1982: 18.9 C, +0.9 C from the station mean1983: 18.0 C, -0.1 C from the station mean1984: 18.7 C, +0.6 C from the station mean1985: 19.0 C, +0.9 C from the station mean1986: 19.5 C, +1.4 C from the station mean1987: 18.5 C, +0.5 C from the station mean1958196019651970197519801985
One stripe for each of 25 complete years at Holly Hill, 1958 to 1987. Blue stripes are years cooler than the station's own mean of 18.0 C (64.5 F); red stripes are warmer. The coolest year was 1966, at 16.4 C (61.6 F), and the warmest was 1986, at 19.5 C (67.0 F). The strongest colour marks a difference of 1.7 C (3.1 F).
Annual mean temperature at Holly Hill as warming stripes, 1958 to 1987
YearAnnual mean temperatureDifference from the station mean
195817.6 C-0.45 C
195918.6 C+0.61 C
196017.7 C-0.38 C
196117.9 C-0.15 C
196217.8 C-0.25 C
196317.2 C-0.86 C
196417.5 C-0.58 C
196517.8 C-0.19 C
196616.4 C-1.61 C
196716.8 C-1.20 C
196917.1 C-0.89 C
197017.9 C-0.10 C
197118.2 C+0.12 C
197218.1 C+0.02 C
197318.1 C+0.03 C
197418.4 C+0.36 C
197518.7 C+0.63 C
198018.4 C+0.40 C
198118.2 C+0.16 C
198218.9 C+0.90 C
198318.0 C-0.07 C
198418.7 C+0.64 C
198519.0 C+0.94 C
198619.5 C+1.42 C
198718.5 C+0.49 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

1957 to 2001
Yearly extremes at Holly Hill: the record and the median year
MeasureRecordYear of the recordMedian yearYears with a value
Hottest day (TXx)41.1 C (106.0 F)198637.2 C (99.0 F)40
Coldest night (TNn)-17.2 C (1.0 F)2000-9.1 C (15.5 F)40
Wettest day (Rx1day)130.8 mm (5.1 in)195976.9 mm (3.0 in)40
Wettest five days (Rx5day)317.5 mm (12.5 in)1973118.7 mm (4.7 in)40
Longest dry spell (CDD)36 days197620 days40

Hottest day (TXx)

Hottest day (TXx) at Holly Hill by year The hottest day of the year at Holly Hill, 1957 to 2001. The record is 41.1 C (106.0 F) in 1986, marked on the chart; the median year is 37.2 C (99.0 F). 20253035404519601970198019902000Record: 41.1 C (106.0 F) in 1986
The hottest day of the year at Holly Hill, 1957 to 2001. The record is 41.1 C (106.0 F) in 1986, marked on the chart; the median year is 37.2 C (99.0 F).
Hottest day (TXx) at Holly Hill by year
YearHottest day (TXx)
195723.9 C (75.0 F)
195838.3 C (100.9 F)
195939.4 C (102.9 F)
196037.8 C (100.0 F)
196137.2 C (99.0 F)
196238.3 C (100.9 F)
196337.2 C (99.0 F)
196436.1 C (97.0 F)
196535.6 C (96.1 F)
196636.7 C (98.1 F)
196735.6 C (96.1 F)
196833.3 C (91.9 F)
196934.4 C (93.9 F)
197036.7 C (98.1 F)
197133.9 C (93.0 F)
197235.0 C (95.0 F)
197332.8 C (91.0 F)
197435.0 C (95.0 F)
197535.0 C (95.0 F)
197636.1 C (97.0 F)
197739.4 C (102.9 F)
197837.8 C (100.0 F)
197938.3 C (100.9 F)
198040.0 C (104.0 F)
198137.8 C (100.0 F)
198236.1 C (97.0 F)
198340.6 C (105.1 F)
198437.2 C (99.0 F)
198538.3 C (100.9 F)
198641.1 C (106.0 F)
198738.3 C (100.9 F)
198837.8 C (100.0 F)
198936.7 C (98.1 F)
199038.9 C (102.0 F)
199627.8 C (82.0 F)
199738.3 C (100.9 F)
199825.6 C (78.1 F)
199939.4 C (102.9 F)
200038.3 C (100.9 F)
200128.3 C (82.9 F)

Coldest night (TNn)

Coldest night (TNn) at Holly Hill by year The coldest night of the year at Holly Hill, 1957 to 2001. The record is -17.2 C (1.0 F) in 2000, marked on the chart; the median year is -9.1 C (15.5 F). -20-15-10-5019601970198019902000Record: -17.2 C (1.0 F) in 2000
The coldest night of the year at Holly Hill, 1957 to 2001. The record is -17.2 C (1.0 F) in 2000, marked on the chart; the median year is -9.1 C (15.5 F).
Coldest night (TNn) at Holly Hill by year
YearColdest night (TNn)
1957-8.9 C (16.0 F)
1958-10.0 C (14.0 F)
1959-10.0 C (14.0 F)
1960-10.0 C (14.0 F)
1961-9.4 C (15.1 F)
1962-12.2 C (10.0 F)
1963-8.9 C (16.0 F)
1964-10.0 C (14.0 F)
1965-7.8 C (18.0 F)
1966-12.8 C (9.0 F)
1967-10.0 C (14.0 F)
1968-8.9 C (16.0 F)
1969-6.7 C (19.9 F)
1970-11.7 C (10.9 F)
1971-6.7 C (19.9 F)
1972-8.3 C (17.1 F)
1973-12.8 C (9.0 F)
1974-6.7 C (19.9 F)
1975-7.2 C (19.0 F)
1976-7.8 C (18.0 F)
1977-10.0 C (14.0 F)
1978-6.7 C (19.9 F)
1979-8.9 C (16.0 F)
1980-12.8 C (9.0 F)
1981-11.1 C (12.0 F)
1982-12.8 C (9.0 F)
1983-13.9 C (7.0 F)
1984-7.2 C (19.0 F)
1985-16.1 C (3.0 F)
1986-11.7 C (10.9 F)
1987-6.1 C (21.0 F)
1988-7.2 C (19.0 F)
1989-10.0 C (14.0 F)
1990-3.3 C (26.1 F)
1996-6.7 C (19.9 F)
1997-6.7 C (19.9 F)
1998-4.4 C (24.1 F)
1999-8.3 C (17.1 F)
2000-17.2 C (1.0 F)
2001-13.3 C (8.1 F)

Wettest day (Rx1day)

Wettest day (Rx1day) at Holly Hill by year The wettest day of the year at Holly Hill, 1957 to 2001. The record is 130.8 mm (5.1 in) in 1959, marked on the chart; the median year is 76.9 mm (3.0 in). 05010015019601970198019902000Record: 130.8 mm (5.1 in) in 1959
The wettest day of the year at Holly Hill, 1957 to 2001. The record is 130.8 mm (5.1 in) in 1959, marked on the chart; the median year is 76.9 mm (3.0 in).
Wettest day (Rx1day) at Holly Hill by year
YearWettest day (Rx1day)
195721.8 mm (0.9 in)
195841.1 mm (1.6 in)
1959130.8 mm (5.1 in)
196076.2 mm (3.0 in)
196157.9 mm (2.3 in)
1962104.1 mm (4.1 in)
196357.4 mm (2.3 in)
1964114.3 mm (4.5 in)
196550.0 mm (2.0 in)
196679.0 mm (3.1 in)
196768.6 mm (2.7 in)
196880.0 mm (3.1 in)
1969116.8 mm (4.6 in)
197082.0 mm (3.2 in)
197194.2 mm (3.7 in)
197257.4 mm (2.3 in)
1973129.0 mm (5.1 in)
197463.5 mm (2.5 in)
1975110.5 mm (4.4 in)
197664.0 mm (2.5 in)
197763.8 mm (2.5 in)
197859.7 mm (2.4 in)
1979105.4 mm (4.1 in)
1980119.4 mm (4.7 in)
198161.5 mm (2.4 in)
1982101.6 mm (4.0 in)
1983105.7 mm (4.2 in)
198480.0 mm (3.1 in)
1985115.8 mm (4.6 in)
198665.5 mm (2.6 in)
198777.5 mm (3.1 in)
198852.1 mm (2.1 in)
198991.9 mm (3.6 in)
1990126.0 mm (5.0 in)
199628.2 mm (1.1 in)
199775.7 mm (3.0 in)
199841.7 mm (1.6 in)
199983.8 mm (3.3 in)
200069.9 mm (2.8 in)
200126.7 mm (1.1 in)

Wettest five days (Rx5day)

Wettest five days (Rx5day) at Holly Hill by year The wettest five days of the year at Holly Hill, 1957 to 2001. The record is 317.5 mm (12.5 in) in 1973, marked on the chart; the median year is 118.7 mm (4.7 in). 010020030040019601970198019902000Record: 317.5 mm (12.5 in) in 1973
The wettest five days of the year at Holly Hill, 1957 to 2001. The record is 317.5 mm (12.5 in) in 1973, marked on the chart; the median year is 118.7 mm (4.7 in).
Wettest five days (Rx5day) at Holly Hill by year
YearWettest five days (Rx5day)
195744.1 mm (1.7 in)
195870.6 mm (2.8 in)
1959159.0 mm (6.3 in)
1960104.3 mm (4.1 in)
1961125.7 mm (4.9 in)
1962109.2 mm (4.3 in)
1963103.8 mm (4.1 in)
1964231.3 mm (9.1 in)
196597.0 mm (3.8 in)
1966121.7 mm (4.8 in)
196789.4 mm (3.5 in)
196896.8 mm (3.8 in)
1969145.3 mm (5.7 in)
1970134.8 mm (5.3 in)
1971126.2 mm (5.0 in)
1972109.2 mm (4.3 in)
1973317.5 mm (12.5 in)
1974119.3 mm (4.7 in)
1975136.9 mm (5.4 in)
197695.0 mm (3.7 in)
197795.5 mm (3.8 in)
197876.2 mm (3.0 in)
1979194.3 mm (7.6 in)
1980176.3 mm (6.9 in)
1981160.2 mm (6.3 in)
1982168.2 mm (6.6 in)
1983123.2 mm (4.9 in)
1984185.2 mm (7.3 in)
1985116.8 mm (4.6 in)
198682.7 mm (3.3 in)
1987183.3 mm (7.2 in)
198883.9 mm (3.3 in)
1989118.1 mm (4.6 in)
1990249.2 mm (9.8 in)
199628.2 mm (1.1 in)
1997108.2 mm (4.3 in)
199879.8 mm (3.1 in)
1999124.5 mm (4.9 in)
2000132.1 mm (5.2 in)
200148.9 mm (1.9 in)

Longest dry spell (CDD)

Longest dry spell (CDD) at Holly Hill by year The longest dry spell of the year at Holly Hill, 1957 to 2001. The record is 36 days in 1976, marked on the chart; the median year is 20 days. 01020304019601970198019902000Record: 36 days in 1976
The longest dry spell of the year at Holly Hill, 1957 to 2001. The record is 36 days in 1976, marked on the chart; the median year is 20 days.
Longest dry spell (CDD) at Holly Hill by year
YearLongest dry spell (CDD)
195710 days
195818 days
195916 days
196016 days
196134 days
196214 days
196323 days
196428 days
196519 days
196614 days
196726 days
196825 days
196922 days
197030 days
197123 days
197231 days
197320 days
197421 days
197519 days
197636 days
197720 days
197817 days
197917 days
198023 days
198123 days
198214 days
198320 days
198426 days
198516 days
198621 days
198721 days
198825 days
198918 days
199031 days
19969 days
199719 days
19987 days
199916 days
200031 days
20019 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

25 years with a frost

Across 25 years with a frost, the median last spring frost at Holly Hill falls on 22 March and the median first autumn frost on 12 November, which leaves a median of 235 days between them.

Fitted over all years, the growing season changes by +4.6 days per decade at this station.

Frost dates and growing season at Holly Hill
MeasureMedian, all yearsEarliest periodRecent period (1958 to 1987)Recent against earliestFitted trend
Last spring frost22 Marchn/a22 Marchn/a-1.3 days per decade
First autumn frost12 Novembern/a12 Novembern/a+3.2 days per decade
Growing days235 daysn/a235 daysn/a+4.6 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

31 years, 1958 to 1997

A day with at least 82.1 mm (3.2 in) of rain is expected about once in 2 years. A day with at least 153.8 mm (6.1 in) of rain is expected about once in 100 years.

Rainfall return levels at Holly Hill: the daily rain expected about once in a given number of years
Expected about once inA day with at leastNote
2 years82.1 mm (3.2 in)
5 years105.9 mm (4.2 in)
10 years119.6 mm (4.7 in)
25 years134.9 mm (5.3 in)
50 years144.9 mm (5.7 in)Longer than the 31 years of record
100 years153.8 mm (6.1 in)Longer than the 31 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, 31 years of values from 1958 to 1997.

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: 130.8 mm (5.1 in) in 1959; 129.0 mm (5.1 in) in 1973; 119.4 mm (4.7 in) in 1980.

Download the Data

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