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Grafton Research STN Weather Records (ASN00058077)

Record envelope, standing records and threshold days for Grafton Research STN (ASN00058077), Australia, with 110 years of record.

Key Facts for Grafton Research STN

  • Grafton Research STN (ASN00058077) is a weather station in Australia at -29.62 latitude and 152.96 longitude, 25 m (82 ft) above sea level.
  • The station reports from 1917 to 2026, 110 years of record.
  • 1,464 records set at Grafton Research STN still stand.
  • Records are tracked for prcp: an element needs 30 years of data to be eligible.
  • Grafton Research STN set a daily record precipitation of 11.4 mm (0.4 in) on 26 August 2026 (provisional).

Provisional Records

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

About the Station

  • Location: Australia, -29.62 latitude, 152.96 longitude.
  • Elevation: 25 m (82 ft).
  • Period of record: 1917 to 2026, 110 years.
  • Eligible elements: prcp.

Daily Record Envelope and 2026

26 days at or beyond a record
Daily record high and record low at Grafton Research STN, with 2026 drawn through them The band shows the record high and record low for each calendar day at Grafton Research STN. The lines show the 2026 daily maximum and minimum. 26 days in 2026 matched or passed a record. Temperatures are in degrees Celsius. -1001020304050 JanFebMarAprMayJunJulAugSepOctNovDec
The band shows the record high and record low for each calendar day at Grafton Research STN. The lines show the 2026 daily maximum and minimum. 26 days in 2026 matched or passed a record. Temperatures are in degrees Celsius.
Daily record high and record low at Grafton Research STN, with 2026 drawn through them
MonthHighest record highLowest record low2026 highest maximum2026 lowest minimum
Jan44.6 C (112.3 F)13.4 C (56.1 F)37.2 C (99.0 F)16.7 C (62.1 F)
Feb46.3 C (115.3 F)8.4 C (47.1 F)39.9 C (103.8 F)15.6 C (60.1 F)
Mar39.4 C (102.9 F)10.1 C (50.2 F)37.0 C (98.6 F)12.3 C (54.1 F)
Apr37.1 C (98.8 F)5.0 C (41.0 F)37.1 C (98.8 F)8.9 C (48.0 F)
May30.4 C (86.7 F)1.1 C (34.0 F)28.7 C (83.7 F)6.3 C (43.3 F)
Jun30.4 C (86.7 F)-0.8 C (30.6 F)24.6 C (76.3 F)6.8 C (44.2 F)
Jul27.6 C (81.7 F)-1.9 C (28.6 F)25.9 C (78.6 F)3.5 C (38.3 F)
Aug36.2 C (97.2 F)-0.2 C (31.6 F)25.7 C (78.3 F)5.1 C (41.2 F)
Sep38.6 C (101.5 F)3.2 C (37.8 F)33.2 C (91.8 F)7.7 C (45.9 F)
Oct41.0 C (105.8 F)5.8 C (42.4 F)26.9 C (80.4 F)9.7 C (49.5 F)
Nov42.9 C (109.2 F)7.9 C (46.2 F)n/an/a
Dec42.5 C (108.5 F)9.5 C (49.1 F)n/an/a

Which Years Hold Standing Records

1,464 standing records
Standing records at Grafton Research STN by the year they were set 1,464 records at Grafton Research STN still stand. 2016 holds the most, with 81. 02550751002002: 192003: 552004: 782005: 692006: 572007: 482008: 672009: 492010: 462011: 542012: 542013: 442014: 532015: 542016: 812017: 752018: 702019: 762020: 632021: 692022: 692023: 602024: 582025: 522026: 44200220052008201120142017202020232026
1,464 records at Grafton Research STN still stand. 2016 holds the most, with 81.
Standing records at Grafton Research STN by the year they were set
Year setStanding records
200219
200355
200478
200569
200657
200748
200867
200949
201046
201154
201254
201344
201453
201554
201681
201775
201870
201976
202063
202169
202269
202360
202458
202552
202644

All-Time Record Progression

1 new records
When Grafton Research STN set new all-time records 1 all-time records were set at Grafton Research STN between 28 February 2022 and 28 February 2022. Each dot is a new record. Record daily precipitation28 February 2022: Record daily precipitation 252.0 mm (9.9 in)
1 all-time records were set at Grafton Research STN between 28 February 2022 and 28 February 2022. Each dot is a new record.
When Grafton Research STN set new all-time records
DateKindDetail
2022-02-28Record daily precipitationRecord daily precipitation 252.0 mm (9.9 in)

Wettest Day of Each Month

Feb: 252.0 mm (9.9 in)
Record daily precipitation for each month at Grafton Research STN The wettest day on record for each calendar month at Grafton Research STN. The most was 252.0 mm (9.9 in) on 28 February 2022. 0100200300 Jan: 116.2 mm (4.6 in), 28 January 2013 Jan Feb: 252.0 mm (9.9 in), 28 February 2022 Feb Mar: 103.4 mm (4.1 in), 18 March 2017 Mar Apr: 113.8 mm (4.5 in), 1 April 2010 Apr May: 157.0 mm (6.2 in), 15 May 1921 May Jun: 128.4 mm (5.1 in), 5 June 2016 Jun Jul: 137.2 mm (5.4 in), 23 July 1921 Jul Aug: 99.8 mm (3.9 in), 21 August 2007 Aug Sep: 109.0 mm (4.3 in), 14 September 1922 Sep Oct: 91.0 mm (3.6 in), 2 October 2003 Oct Nov: 131.1 mm (5.2 in), 16 November 1917 Nov Dec: 132.0 mm (5.2 in), 17 December 2018 Dec
The wettest day on record for each calendar month at Grafton Research STN. The most was 252.0 mm (9.9 in) on 28 February 2022.
Record daily precipitation for each month at Grafton Research STN
MonthRecord daily precipitation (mm)Date
Jan116.2 mm (4.6 in)28 January 2013
Feb252.0 mm (9.9 in)28 February 2022
Mar103.4 mm (4.1 in)18 March 2017
Apr113.8 mm (4.5 in)1 April 2010
May157.0 mm (6.2 in)15 May 1921
Jun128.4 mm (5.1 in)5 June 2016
Jul137.2 mm (5.4 in)23 July 1921
Aug99.8 mm (3.9 in)21 August 2007
Sep109.0 mm (4.3 in)14 September 1922
Oct91.0 mm (3.6 in)2 October 2003
Nov131.1 mm (5.2 in)16 November 1917
Dec132.0 mm (5.2 in)17 December 2018

Period of Record Coverage

2002 to 2026
Days with data per year at Grafton Research STN 25 years of record at Grafton Research STN, 2002 to 2026. 3 years have data for under 90 percent of days and are left out of rankings: 2002, 2003, 2026. 2002: 115 of 365 days2003: 317 of 365 days2004: 357 of 366 days2005: 361 of 365 days2006: 356 of 365 days2007: 362 of 365 days2008: 349 of 366 days2009: 348 of 365 days2010: 361 of 365 days2011: 361 of 365 days2012: 365 of 366 days2013: 356 of 365 days2014: 339 of 365 days2015: 365 of 365 days2016: 366 of 366 days2017: 365 of 365 days2018: 363 of 365 days2019: 360 of 365 days2020: 350 of 366 days2021: 363 of 365 days2022: 360 of 365 days2023: 364 of 365 days2024: 365 of 366 days2025: 363 of 365 days2026: 274 of 365 days20052010201520202025
25 years of record at Grafton Research STN, 2002 to 2026. 3 years have data for under 90 percent of days and are left out of rankings: 2002, 2003, 2026.
Days with data per year at Grafton Research STN
YearDays with dataShare of yearComplete
200211532%No
200331787%No
200435798%Yes
200536199%Yes
200635698%Yes
200736299%Yes
200834995%Yes
200934895%Yes
201036199%Yes
201136199%Yes
2012365100%Yes
201335698%Yes
201433993%Yes
2015365100%Yes
2016366100%Yes
2017365100%Yes
201836399%Yes
201936099%Yes
202035096%Yes
202136399%Yes
202236099%Yes
2023364100%Yes
2024365100%Yes
202536399%Yes
202627475%No

Latest Records

20
Latest records at Grafton Research STN
DateStationRecordValueBeat old record byOld record stoodSignificance
26 August 2026Grafton Research STN, AUdaily rain (Provisional)11.4 mm (0.4 in)2.2 mm (0.09 in)8 years13 of 100 (Routine)
19 July 2026Grafton Research STN, AUdaily rain2.8 mm (0.11 in)1.4 mm (0.06 in)13 years15 of 100 (Routine)
17 July 2026Grafton Research STN, AUdaily rain10.4 mm (0.4 in)5.8 mm (0.23 in)97 years20 of 100 (Routine)
16 June 2026Grafton Research STN, AUdaily rain17.8 mm (0.7 in)10.2 mm (0.4 in)96 years20 of 100 (Routine)
19 May 2026Grafton Research STN, AUdaily rain45.8 mm (1.8 in)34.4 mm (1.4 in)1 year32 of 100 (Routine)
10 March 2026Grafton Research STN, AUdaily rain24.8 mm (1.0 in)1.2 mm (0.05 in)11 years13 of 100 (Routine)
20 September 2025Grafton Research STN, AUdaily rain19.0 mm (0.7 in)2.4 mm (0.09 in)11 years15 of 100 (Routine)
22 August 2025Grafton Research STN, AUdaily rain19.0 mm (0.7 in)10.0 mm (0.4 in)18 years20 of 100 (Routine)
14 August 2025Grafton Research STN, AUdaily rain34.4 mm (1.4 in)24.6 mm (1.0 in)0 years28 of 100 (Routine)
9 August 2025Grafton Research STN, AUdaily rain6.6 mm (0.26 in)1.3 mm (0.05 in)96 years20 of 100 (Routine)
8 August 2025Grafton Research STN, AUdaily rain18.8 mm (0.7 in)4.8 mm (0.19 in)4 years14 of 100 (Routine)
2 August 2025Grafton Research STN, AUdaily rain21.2 mm (0.8 in)18.6 mm (0.7 in)20 years20 of 100 (Routine)
27 July 2025Grafton Research STN, AUdaily rain13.2 mm (0.5 in)2.0 mm (0.08 in)102 years20 of 100 (Routine)
18 July 2025Grafton Research STN, AUdaily rain8.8 mm (0.35 in)4.5 mm (0.18 in)104 years20 of 100 (Routine)
31 May 2025Grafton Research STN, AUdaily rain26.0 mm (1.0 in)4.7 mm (0.19 in)96 years41 of 100 (Notable)
22 May 2025Grafton Research STN, AUdaily rain86.4 mm (3.4 in)53.0 mm (2.1 in)16 years49 of 100 (Notable)
12 May 2025Grafton Research STN, AUdaily rain21.0 mm (0.8 in)4.2 mm (0.17 in)0 years12 of 100 (Routine)
5 May 2025Grafton Research STN, AUdaily rain14.2 mm (0.6 in)7.2 mm (0.28 in)15 years18 of 100 (Routine)
24 April 2025Grafton Research STN, AUdaily rain20.0 mm (0.8 in)8.8 mm (0.35 in)2 years17 of 100 (Routine)
13 April 2025Grafton Research STN, AUdaily rain23.2 mm (0.9 in)7.6 mm (0.30 in)12 years19 of 100 (Routine)

Climate Trend

20 complete years, 2004 to 2025
Annual mean temperature at Grafton Research STN as warming stripes, 2004 to 2025 One stripe for each of 20 complete years at Grafton Research STN, 2004 to 2025. Blue stripes are years cooler than the station's own mean of 20.1 C (68.1 F); red stripes are warmer. The coolest year was 2022, at 19.2 C (66.6 F), and the warmest was 2019, at 21.0 C (69.8 F). The strongest colour marks a difference of 1.0 C (1.8 F). 2004: 20.1 C, 0.0 C from the station mean2005: 20.4 C, +0.4 C from the station mean2006: 19.7 C, -0.4 C from the station mean2007: 19.8 C, -0.2 C from the station mean2008: 19.4 C, -0.7 C from the station mean2010: 19.7 C, -0.3 C from the station mean2011: 19.4 C, -0.6 C from the station mean2012: 19.6 C, -0.5 C from the station mean2013: 20.0 C, 0.0 C from the station mean2015: 20.0 C, -0.1 C from the station mean2016: 20.8 C, +0.7 C from the station mean2017: 20.5 C, +0.4 C from the station mean2018: 20.2 C, +0.1 C from the station mean2019: 21.0 C, +0.9 C from the station mean2020: 20.3 C, +0.2 C from the station mean2021: 19.4 C, -0.6 C from the station mean2022: 19.2 C, -0.9 C from the station mean2023: 20.5 C, +0.5 C from the station mean2024: 20.6 C, +0.5 C from the station mean2025: 20.5 C, +0.5 C from the station mean20042006200820102012201420162018202020222024
One stripe for each of 20 complete years at Grafton Research STN, 2004 to 2025. Blue stripes are years cooler than the station's own mean of 20.1 C (68.1 F); red stripes are warmer. The coolest year was 2022, at 19.2 C (66.6 F), and the warmest was 2019, at 21.0 C (69.8 F). The strongest colour marks a difference of 1.0 C (1.8 F).
Annual mean temperature at Grafton Research STN as warming stripes, 2004 to 2025
YearAnnual mean temperatureDifference from the station mean
200420.1 C+0.05 C
200520.4 C+0.38 C
200619.7 C-0.40 C
200719.8 C-0.22 C
200819.4 C-0.70 C
201019.7 C-0.33 C
201119.4 C-0.62 C
201219.6 C-0.51 C
201320.0 C-0.03 C
201520.0 C-0.05 C
201620.8 C+0.72 C
201720.5 C+0.45 C
201820.2 C+0.14 C
201921.0 C+0.93 C
202020.3 C+0.25 C
202119.4 C-0.62 C
202219.2 C-0.85 C
202320.5 C+0.47 C
202420.6 C+0.53 C
202520.5 C+0.47 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

1917 to 2026
Yearly extremes at Grafton Research STN: the record and the median year
MeasureRecordYear of the recordMedian yearYears with a value
Hottest day (TXx)46.3 C (115.3 F)201740.9 C (105.6 F)25
Coldest night (TNn)-1.9 C (28.6 F)20141.1 C (34.0 F)25
Wettest day (Rx1day)252.0 mm (9.9 in)202286.4 mm (3.4 in)43
Wettest five days (Rx5day)428.8 mm (16.9 in)2022149.8 mm (5.9 in)43
Longest dry spell (CDD)56 days201729 days43

Hottest day (TXx)

Hottest day (TXx) at Grafton Research STN by year The hottest day of the year at Grafton Research STN, 1917 to 2026. The record is 46.3 C (115.3 F) in 2017, marked on the chart; the median year is 40.9 C (105.6 F). 35404550192019401960198020002020Record: 46.3 C (115.3 F) in 2017
The hottest day of the year at Grafton Research STN, 1917 to 2026. The record is 46.3 C (115.3 F) in 2017, marked on the chart; the median year is 40.9 C (105.6 F).
Hottest day (TXx) at Grafton Research STN by year
YearHottest day (TXx)
1917n/a
1918n/a
1919n/a
1920n/a
1921n/a
1922n/a
1923n/a
1924n/a
1925n/a
1926n/a
1927n/a
1928n/a
1929n/a
1935n/a
1957n/a
1963n/a
1964n/a
1977n/a
200242.0 C (107.6 F)
200342.5 C (108.5 F)
200444.6 C (112.3 F)
200540.7 C (105.3 F)
200642.4 C (108.3 F)
200737.4 C (99.3 F)
200837.0 C (98.6 F)
200940.9 C (105.6 F)
201037.7 C (99.9 F)
201137.4 C (99.3 F)
201238.3 C (100.9 F)
201342.2 C (108.0 F)
201442.9 C (109.2 F)
201539.0 C (102.2 F)
201641.8 C (107.2 F)
201746.3 C (115.3 F)
201841.0 C (105.8 F)
201943.2 C (109.8 F)
202042.5 C (108.5 F)
202135.3 C (95.5 F)
202236.1 C (97.0 F)
202341.0 C (105.8 F)
202438.2 C (100.8 F)
202539.7 C (103.5 F)
202639.9 C (103.8 F)

Coldest night (TNn)

Coldest night (TNn) at Grafton Research STN by year The coldest night of the year at Grafton Research STN, 1917 to 2026. The record is -1.9 C (28.6 F) in 2014, marked on the chart; the median year is 1.1 C (34.0 F). -2.502.557.5192019401960198020002020Record: -1.9 C (28.6 F) in 2014
The coldest night of the year at Grafton Research STN, 1917 to 2026. The record is -1.9 C (28.6 F) in 2014, marked on the chart; the median year is 1.1 C (34.0 F).
Coldest night (TNn) at Grafton Research STN by year
YearColdest night (TNn)
1917n/a
1918n/a
1919n/a
1920n/a
1921n/a
1922n/a
1923n/a
1924n/a
1925n/a
1926n/a
1927n/a
1928n/a
1929n/a
1935n/a
1957n/a
1963n/a
1964n/a
1977n/a
20027.0 C (44.6 F)
2003-1.1 C (30.0 F)
2004-0.8 C (30.6 F)
2005-0.2 C (31.6 F)
2006-1.8 C (28.8 F)
20070.9 C (33.6 F)
20081.1 C (34.0 F)
20092.5 C (36.5 F)
20101.4 C (34.5 F)
2011-1.1 C (30.0 F)
20122.2 C (36.0 F)
20130.9 C (33.6 F)
2014-1.9 C (28.6 F)
20150.5 C (32.9 F)
20162.7 C (36.9 F)
20171.9 C (35.4 F)
20180.1 C (32.2 F)
20191.1 C (34.0 F)
20201.7 C (35.1 F)
20212.7 C (36.9 F)
20220.9 C (33.6 F)
20230.6 C (33.1 F)
20243.6 C (38.5 F)
20252.8 C (37.0 F)
20263.5 C (38.3 F)

Wettest day (Rx1day)

Wettest day (Rx1day) at Grafton Research STN by year The wettest day of the year at Grafton Research STN, 1917 to 2026. The record is 252.0 mm (9.9 in) in 2022, marked on the chart; the median year is 86.4 mm (3.4 in). 0100200300192019401960198020002020Record: 252.0 mm (9.9 in) in 2022
The wettest day of the year at Grafton Research STN, 1917 to 2026. The record is 252.0 mm (9.9 in) in 2022, marked on the chart; the median year is 86.4 mm (3.4 in).
Wettest day (Rx1day) at Grafton Research STN by year
YearWettest day (Rx1day)
1917131.1 mm (5.2 in)
191867.1 mm (2.6 in)
191971.6 mm (2.8 in)
192064.8 mm (2.6 in)
1921157.0 mm (6.2 in)
1922109.0 mm (4.3 in)
192340.1 mm (1.6 in)
192443.7 mm (1.7 in)
1925111.3 mm (4.4 in)
192646.5 mm (1.8 in)
1927110.5 mm (4.4 in)
192874.7 mm (2.9 in)
192986.4 mm (3.4 in)
19350.0 mm (0.00 in)
19570.0 mm (0.00 in)
1963139.4 mm (5.5 in)
19640.0 mm (0.00 in)
197712.9 mm (0.5 in)
200228.0 mm (1.1 in)
2003126.0 mm (5.0 in)
200468.6 mm (2.7 in)
200598.6 mm (3.9 in)
200696.6 mm (3.8 in)
200799.8 mm (3.9 in)
200871.4 mm (2.8 in)
200965.8 mm (2.6 in)
2010113.8 mm (4.5 in)
201162.8 mm (2.5 in)
2012102.4 mm (4.0 in)
2013136.0 mm (5.4 in)
201466.4 mm (2.6 in)
2015106.8 mm (4.2 in)
2016128.4 mm (5.1 in)
2017103.4 mm (4.1 in)
2018132.0 mm (5.2 in)
201928.2 mm (1.1 in)
2020125.2 mm (4.9 in)
202176.0 mm (3.0 in)
2022252.0 mm (9.9 in)
202355.6 mm (2.2 in)
202497.6 mm (3.8 in)
202592.0 mm (3.6 in)
202645.8 mm (1.8 in)

Wettest five days (Rx5day)

Wettest five days (Rx5day) at Grafton Research STN by year The wettest five days of the year at Grafton Research STN, 1917 to 2026. The record is 428.8 mm (16.9 in) in 2022, marked on the chart; the median year is 149.8 mm (5.9 in). 0200400600192019401960198020002020Record: 428.8 mm (16.9 in) in 2022
The wettest five days of the year at Grafton Research STN, 1917 to 2026. The record is 428.8 mm (16.9 in) in 2022, marked on the chart; the median year is 149.8 mm (5.9 in).
Wettest five days (Rx5day) at Grafton Research STN by year
YearWettest five days (Rx5day)
1917209.9 mm (8.3 in)
191889.1 mm (3.5 in)
1919122.6 mm (4.8 in)
192089.1 mm (3.5 in)
1921244.4 mm (9.6 in)
1922148.1 mm (5.8 in)
1923142.2 mm (5.6 in)
192476.3 mm (3.0 in)
1925209.1 mm (8.2 in)
192667.4 mm (2.7 in)
1927231.9 mm (9.1 in)
1928149.8 mm (5.9 in)
1929147.7 mm (5.8 in)
19350.0 mm (0.00 in)
19570.0 mm (0.00 in)
1963227.8 mm (9.0 in)
19640.0 mm (0.00 in)
197718.1 mm (0.7 in)
200238.0 mm (1.5 in)
2003230.0 mm (9.1 in)
2004114.6 mm (4.5 in)
2005158.6 mm (6.2 in)
2006178.2 mm (7.0 in)
2007155.0 mm (6.1 in)
2008145.8 mm (5.7 in)
2009155.2 mm (6.1 in)
2010154.2 mm (6.1 in)
2011120.2 mm (4.7 in)
2012197.8 mm (7.8 in)
2013206.0 mm (8.1 in)
201493.2 mm (3.7 in)
2015154.6 mm (6.1 in)
2016161.2 mm (6.3 in)
2017207.8 mm (8.2 in)
2018160.0 mm (6.3 in)
201943.4 mm (1.7 in)
2020339.4 mm (13.4 in)
2021186.0 mm (7.3 in)
2022428.8 mm (16.9 in)
2023104.2 mm (4.1 in)
2024119.6 mm (4.7 in)
2025224.8 mm (8.9 in)
202673.8 mm (2.9 in)

Longest dry spell (CDD)

Longest dry spell (CDD) at Grafton Research STN by year The longest dry spell of the year at Grafton Research STN, 1917 to 2026. The record is 56 days in 2017, marked on the chart; the median year is 29 days. 0204060192019401960198020002020Record: 56 days in 2017
The longest dry spell of the year at Grafton Research STN, 1917 to 2026. The record is 56 days in 2017, marked on the chart; the median year is 29 days.
Longest dry spell (CDD) at Grafton Research STN by year
YearLongest dry spell (CDD)
191735 days
191828 days
191942 days
192020 days
192118 days
192230 days
192326 days
192430 days
192543 days
192636 days
192728 days
192830 days
192924 days
193530 days
195731 days
196328 days
196431 days
19779 days
200229 days
200326 days
200430 days
200523 days
200622 days
200736 days
200833 days
200946 days
201018 days
201121 days
201248 days
201330 days
201417 days
201529 days
201623 days
201756 days
201849 days
201946 days
202025 days
202132 days
202225 days
202326 days
202428 days
202528 days
202631 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.

Rainfall Return Levels

32 years, 1918 to 2025

A day with at least 88.6 mm (3.5 in) of rain is expected about once in 2 years. A day with at least 220.9 mm (8.7 in) of rain is expected about once in 100 years.

Rainfall return levels at Grafton Research STN: the daily rain expected about once in a given number of years
Expected about once inA day with at leastNote
2 years88.6 mm (3.5 in)
5 years124.3 mm (4.9 in)
10 years147.8 mm (5.8 in)
25 years177.4 mm (7.0 in)
50 years199.3 mm (7.8 in)Longer than the 32 years of record
100 years220.9 mm (8.7 in)Longer than the 32 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, 32 years of values from 1918 to 2025.

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: 252.0 mm (9.9 in) in 2022; 157.0 mm (6.2 in) in 1921; 136.0 mm (5.4 in) in 2013.

Download the Data

  • Data for Grafton Research STN standing records by year: CSV or JSON. Field meanings are on the data page.
  • Data for Grafton Research STN 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 (2026-10-13).