Built 2026-10-15 (15 October 2026)

Forthside Research Station Weather Records (ASN00091186)

Record envelope, standing records and threshold days for Forthside Research Station (ASN00091186), Australia, with 61 years of record.

Key Facts for Forthside Research Station

  • Forthside Research Station (ASN00091186) is a weather station in Australia at -41.20 latitude and 146.26 longitude, 127 m (417 ft) above sea level.
  • The station reports from 1966 to 2026, 61 years of record.
  • 1,464 records set at Forthside Research Station still stand.
  • Records are tracked for tmax, tmin, prcp: an element needs 30 years of data to be eligible.
  • Forthside Research Station set a daily record precipitation of 30.6 mm (1.2 in) on 1 July 2026.

About the Station

  • Location: Australia, -41.20 latitude, 146.26 longitude.
  • Elevation: 127 m (417 ft).
  • Period of record: 1966 to 2026, 61 years.
  • Eligible elements: tmax, tmin, prcp.

Daily Record Envelope and 2026

0 days at or beyond a record
Daily record high and record low at Forthside Research Station, with 2026 drawn through them The band shows the record high and record low for each calendar day at Forthside Research Station. The lines show the 2026 daily maximum and minimum. 0 days in 2026 matched or passed a record. Temperatures are in degrees Celsius. -10010203040 JanFebMarAprMayJunJulAugSepOctNovDec
The band shows the record high and record low for each calendar day at Forthside Research Station. 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 Forthside Research Station, with 2026 drawn through them
MonthHighest record highLowest record low2026 highest maximum2026 lowest minimum
Jan30.2 C (86.4 F)2.8 C (37.0 F)n/an/a
Feb30.8 C (87.4 F)3.0 C (37.4 F)n/an/a
Mar29.0 C (84.2 F)1.2 C (34.2 F)n/an/a
Apr24.0 C (75.2 F)-2.3 C (27.9 F)n/an/a
May19.9 C (67.8 F)-2.6 C (27.3 F)n/an/a
Jun18.2 C (64.8 F)-2.6 C (27.3 F)n/an/a
Jul18.8 C (65.8 F)-3.2 C (26.2 F)n/an/a
Aug16.9 C (62.4 F)-2.9 C (26.8 F)n/an/a
Sep22.4 C (72.3 F)-2.6 C (27.3 F)n/an/a
Oct24.1 C (75.4 F)-2.8 C (27.0 F)n/an/a
Nov28.1 C (82.6 F)-0.6 C (30.9 F)n/an/a
Dec28.6 C (83.5 F)0.2 C (32.4 F)n/an/a

Which Years Hold Standing Records

1,464 standing records
Standing records at Forthside Research Station by the year they were set 1,464 records at Forthside Research Station still stand. 1968 holds the most, with 69. 0204060801966: 481967: 561968: 691969: 661970: 461971: 411972: 541973: 391974: 491975: 421976: 441977: 331978: 641979: 421980: 611981: 431982: 421983: 541984: 411985: 471986: 391987: 621988: 581989: 331990: 491991: 491992: 361993: 381994: 671995: 501996: 219661970197419781982198619901994
1,464 records at Forthside Research Station still stand. 1968 holds the most, with 69.
Standing records at Forthside Research Station by the year they were set
Year setStanding records
196648
196756
196869
196966
197046
197141
197254
197339
197449
197542
197644
197733
197864
197942
198061
198143
198242
198354
198441
198547
198639
198762
198858
198933
199049
199149
199236
199338
199467
199550
19962

Wettest Day of Each Month

Apr: 124.4 mm (4.9 in)
Record daily precipitation for each month at Forthside Research Station The wettest day on record for each calendar month at Forthside Research Station. The most was 124.4 mm (4.9 in) on 2 April 1989. 050100150 Jan: 107.6 mm (4.2 in), 28 January 2004 Jan Feb: 69.3 mm (2.7 in), 24 February 1969 Feb Mar: 85.0 mm (3.3 in), 27 March 1977 Mar Apr: 124.4 mm (4.9 in), 2 April 1989 Apr May: 90.0 mm (3.5 in), 28 May 1983 May Jun: 53.0 mm (2.1 in), 8 June 1991 Jun Jul: 82.2 mm (3.2 in), 21 July 2000 Jul Aug: 79.0 mm (3.1 in), 25 August 1970 Aug Sep: 77.4 mm (3.0 in), 5 September 1997 Sep Oct: 95.4 mm (3.8 in), 9 October 1992 Oct Nov: 56.6 mm (2.2 in), 2 November 1993 Nov Dec: 69.4 mm (2.7 in), 23 December 1993 Dec
The wettest day on record for each calendar month at Forthside Research Station. The most was 124.4 mm (4.9 in) on 2 April 1989.
Record daily precipitation for each month at Forthside Research Station
MonthRecord daily precipitation (mm)Date
Jan107.6 mm (4.2 in)28 January 2004
Feb69.3 mm (2.7 in)24 February 1969
Mar85.0 mm (3.3 in)27 March 1977
Apr124.4 mm (4.9 in)2 April 1989
May90.0 mm (3.5 in)28 May 1983
Jun53.0 mm (2.1 in)8 June 1991
Jul82.2 mm (3.2 in)21 July 2000
Aug79.0 mm (3.1 in)25 August 1970
Sep77.4 mm (3.0 in)5 September 1997
Oct95.4 mm (3.8 in)9 October 1992
Nov56.6 mm (2.2 in)2 November 1993
Dec69.4 mm (2.7 in)23 December 1993

Period of Record Coverage

1966 to 1996
Days with data per year at Forthside Research Station 31 years of record at Forthside Research Station, 1966 to 1996. 2 years have data for under 90 percent of days and are left out of rankings: 1970, 1996. 1966: 365 of 365 days1967: 360 of 365 days1968: 365 of 366 days1969: 364 of 365 days1970: 298 of 365 days1971: 365 of 365 days1972: 359 of 366 days1973: 330 of 365 days1974: 361 of 365 days1975: 364 of 365 days1976: 365 of 366 days1977: 356 of 365 days1978: 365 of 365 days1979: 365 of 365 days1980: 350 of 366 days1981: 365 of 365 days1982: 365 of 365 days1983: 365 of 365 days1984: 365 of 366 days1985: 365 of 365 days1986: 362 of 365 days1987: 339 of 365 days1988: 353 of 366 days1989: 355 of 365 days1990: 362 of 365 days1991: 363 of 365 days1992: 366 of 366 days1993: 365 of 365 days1994: 365 of 365 days1995: 365 of 365 days1996: 30 of 366 days197019751980198519901995
31 years of record at Forthside Research Station, 1966 to 1996. 2 years have data for under 90 percent of days and are left out of rankings: 1970, 1996.
Days with data per year at Forthside Research Station
YearDays with dataShare of yearComplete
1966365100%Yes
196736099%Yes
1968365100%Yes
1969364100%Yes
197029882%No
1971365100%Yes
197235998%Yes
197333090%Yes
197436199%Yes
1975364100%Yes
1976365100%Yes
197735698%Yes
1978365100%Yes
1979365100%Yes
198035096%Yes
1981365100%Yes
1982365100%Yes
1983365100%Yes
1984365100%Yes
1985365100%Yes
198636299%Yes
198733993%Yes
198835396%Yes
198935597%Yes
199036299%Yes
199136399%Yes
1992366100%Yes
1993365100%Yes
1994365100%Yes
1995365100%Yes
1996308%No

Latest Records

20
Latest records at Forthside Research Station
DateStationRecordValueBeat old record byOld record stoodSignificance
1 July 2026Forthside Research Station, AUdaily rain30.6 mm (1.2 in)2.6 mm (0.10 in)43 years20 of 100 (Routine)
19 June 2026Forthside Research Station, AUdaily rain23.6 mm (0.9 in)6.6 mm (0.26 in)48 years20 of 100 (Routine)
9 April 2026Forthside Research Station, AUdaily rain9.0 mm (0.35 in)3.8 mm (0.15 in)24 years16 of 100 (Routine)
25 June 2025Forthside Research Station, AUdaily rain24.4 mm (1.0 in)1.0 mm (0.04 in)20 years13 of 100 (Routine)
3 March 2025Forthside Research Station, AUdaily rain6.0 mm (0.24 in)0.6 mm (0.02 in)32 years15 of 100 (Routine)
14 December 2023Forthside Research Station, AUdaily rain54.8 mm (2.2 in)45.8 mm (1.8 in)30 years54 of 100 (Notable)
7 March 2023Forthside Research Station, AUdaily rain30.4 mm (1.2 in)19.4 mm (0.8 in)40 years37 of 100 (Notable)
18 January 2023Forthside Research Station, AUdaily rain (Tie)5.4 mm (0.21 in)tie45 years4 of 100 (Routine)
11 November 2022Forthside Research Station, AUdaily rain20.2 mm (0.8 in)5.0 mm (0.20 in)53 years20 of 100 (Routine)
14 October 2022Forthside Research Station, AUdaily rain60.4 mm (2.4 in)5.8 mm (0.23 in)36 years21 of 100 (Routine)
13 October 2022Forthside Research Station, AUdaily rain42.6 mm (1.7 in)0.2 mm (0.01 in)27 years13 of 100 (Routine)
12 August 2022Forthside Research Station, AUdaily rain24.4 mm (1.0 in)6.6 mm (0.26 in)56 years20 of 100 (Routine)
16 June 2022Forthside Research Station, AUdaily rain41.9 mm (1.6 in)9.9 mm (0.39 in)16 years22 of 100 (Routine)
1 March 2022Forthside Research Station, AUdaily rain44.4 mm (1.7 in)18.0 mm (0.7 in)41 years35 of 100 (Notable)
7 January 2022Forthside Research Station, AUdaily rain41.2 mm (1.6 in)26.4 mm (1.0 in)40 years41 of 100 (Notable)
15 October 2021Forthside Research Station, AUdaily rain37.6 mm (1.5 in)8.2 mm (0.32 in)11 years16 of 100 (Routine)
25 March 2021Forthside Research Station, AUdaily rain28.6 mm (1.1 in)3.2 mm (0.13 in)36 years19 of 100 (Routine)
6 March 2020Forthside Research Station, AUdaily rain44.0 mm (1.7 in)40.0 mm (1.6 in)24 years52 of 100 (Notable)
5 March 2020Forthside Research Station, AUdaily rain14.0 mm (0.6 in)6.0 mm (0.24 in)37 years20 of 100 (Routine)
23 January 2020Forthside Research Station, AUdaily rain33.6 mm (1.3 in)6.8 mm (0.27 in)42 years23 of 100 (Routine)

Climate Trend

27 complete years, 1966 to 1995
Annual mean temperature at Forthside Research Station as warming stripes, 1966 to 1995 One stripe for each of 27 complete years at Forthside Research Station, 1966 to 1995. Blue stripes are years cooler than the station's own mean of 11.8 C (53.2 F); red stripes are warmer. The coolest year was 1995, at 11.2 C (52.1 F), and the warmest was 1988, at 12.9 C (55.2 F). The strongest colour marks a difference of 1.1 C (2.0 F). 1966: 11.4 C, -0.4 C from the station mean1967: 11.4 C, -0.4 C from the station mean1968: 11.3 C, -0.5 C from the station mean1969: 11.5 C, -0.3 C from the station mean1971: 11.9 C, +0.1 C from the station mean1972: 12.0 C, +0.2 C from the station mean1974: 12.2 C, +0.4 C from the station mean1975: 11.7 C, -0.1 C from the station mean1976: 11.7 C, 0.0 C from the station mean1977: 11.4 C, -0.3 C from the station mean1978: 11.8 C, 0.0 C from the station mean1979: 12.0 C, +0.2 C from the station mean1981: 12.3 C, +0.5 C from the station mean1982: 11.7 C, 0.0 C from the station mean1983: 11.8 C, 0.0 C from the station mean1984: 11.6 C, -0.1 C from the station mean1985: 11.8 C, +0.1 C from the station mean1986: 11.6 C, -0.2 C from the station mean1987: 11.6 C, -0.2 C from the station mean1988: 12.9 C, +1.1 C from the station mean1989: 12.4 C, +0.6 C from the station mean1990: 12.2 C, +0.4 C from the station mean1991: 11.8 C, 0.0 C from the station mean1992: 11.7 C, -0.1 C from the station mean1993: 12.1 C, +0.4 C from the station mean1994: 11.3 C, -0.5 C from the station mean1995: 11.2 C, -0.6 C from the station mean1966197019751980198519901995
One stripe for each of 27 complete years at Forthside Research Station, 1966 to 1995. Blue stripes are years cooler than the station's own mean of 11.8 C (53.2 F); red stripes are warmer. The coolest year was 1995, at 11.2 C (52.1 F), and the warmest was 1988, at 12.9 C (55.2 F). The strongest colour marks a difference of 1.1 C (2.0 F).
Annual mean temperature at Forthside Research Station as warming stripes, 1966 to 1995
YearAnnual mean temperatureDifference from the station mean
196611.4 C-0.37 C
196711.4 C-0.43 C
196811.3 C-0.52 C
196911.5 C-0.26 C
197111.9 C+0.10 C
197212.0 C+0.24 C
197412.2 C+0.40 C
197511.7 C-0.11 C
197611.7 C-0.04 C
197711.4 C-0.34 C
197811.8 C+0.00 C
197912.0 C+0.22 C
198112.3 C+0.53 C
198211.7 C-0.05 C
198311.8 C-0.03 C
198411.6 C-0.15 C
198511.8 C+0.05 C
198611.6 C-0.17 C
198711.6 C-0.21 C
198812.9 C+1.09 C
198912.4 C+0.58 C
199012.2 C+0.38 C
199111.8 C-0.03 C
199211.7 C-0.13 C
199312.1 C+0.35 C
199411.3 C-0.53 C
199511.2 C-0.59 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

1966 to 2026
Yearly extremes at Forthside Research Station: the record and the median year
MeasureRecordYear of the recordMedian yearYears with a value
Hottest day (TXx)30.8 C (87.4 F)196728.0 C (82.4 F)31
Coldest night (TNn)-3.2 C (26.2 F)1982-2.0 C (28.4 F)31
Wettest day (Rx1day)124.4 mm (4.9 in)198951.4 mm (2.0 in)61
Wettest five days (Rx5day)189.4 mm (7.5 in)198976.8 mm (3.0 in)61
Longest dry spell (CDD)36 days198716 days61

Hottest day (TXx)

Hottest day (TXx) at Forthside Research Station by year The hottest day of the year at Forthside Research Station, 1966 to 2026. The record is 30.8 C (87.4 F) in 1967, marked on the chart; the median year is 28.0 C (82.4 F). 222426283032197019801990200020102020Record: 30.8 C (87.4 F) in 1967
The hottest day of the year at Forthside Research Station, 1966 to 2026. The record is 30.8 C (87.4 F) in 1967, marked on the chart; the median year is 28.0 C (82.4 F).
Hottest day (TXx) at Forthside Research Station by year
YearHottest day (TXx)
196627.6 C (81.7 F)
196730.8 C (87.4 F)
196826.8 C (80.2 F)
196928.0 C (82.4 F)
197027.3 C (81.1 F)
197125.3 C (77.5 F)
197228.6 C (83.5 F)
197329.1 C (84.4 F)
197429.0 C (84.2 F)
197528.0 C (82.4 F)
197628.4 C (83.1 F)
197727.3 C (81.1 F)
197826.2 C (79.2 F)
197928.5 C (83.3 F)
198028.1 C (82.6 F)
198128.7 C (83.7 F)
198230.2 C (86.4 F)
198328.6 C (83.5 F)
198427.7 C (81.9 F)
198528.5 C (83.3 F)
198624.5 C (76.1 F)
198725.5 C (77.9 F)
198827.0 C (80.6 F)
198928.0 C (82.4 F)
199028.0 C (82.4 F)
199130.2 C (86.4 F)
199228.0 C (82.4 F)
199325.6 C (78.1 F)
199428.2 C (82.8 F)
199527.1 C (80.8 F)
199622.8 C (73.0 F)
1997n/a
1998n/a
1999n/a
2000n/a
2001n/a
2002n/a
2003n/a
2004n/a
2005n/a
2006n/a
2007n/a
2008n/a
2009n/a
2010n/a
2011n/a
2012n/a
2013n/a
2014n/a
2015n/a
2016n/a
2017n/a
2018n/a
2019n/a
2020n/a
2021n/a
2022n/a
2023n/a
2024n/a
2025n/a
2026n/a

Coldest night (TNn)

Coldest night (TNn) at Forthside Research Station by year The coldest night of the year at Forthside Research Station, 1966 to 2026. The record is -3.2 C (26.2 F) in 1982, marked on the chart; the median year is -2.0 C (28.4 F). -50510197019801990200020102020Record: -3.2 C (26.2 F) in 1982
The coldest night of the year at Forthside Research Station, 1966 to 2026. The record is -3.2 C (26.2 F) in 1982, marked on the chart; the median year is -2.0 C (28.4 F).
Coldest night (TNn) at Forthside Research Station by year
YearColdest night (TNn)
1966-2.9 C (26.8 F)
1967-2.8 C (27.0 F)
1968-1.5 C (29.3 F)
1969-2.2 C (28.0 F)
1970-2.6 C (27.3 F)
1971-1.1 C (30.0 F)
1972-2.0 C (28.4 F)
1973-2.6 C (27.3 F)
1974-2.9 C (26.8 F)
1975-1.2 C (29.8 F)
1976-2.6 C (27.3 F)
1977-1.0 C (30.2 F)
1978-2.0 C (28.4 F)
1979-2.0 C (28.4 F)
1980-1.0 C (30.2 F)
1981-2.2 C (28.0 F)
1982-3.2 C (26.2 F)
1983-2.6 C (27.3 F)
1984-2.2 C (28.0 F)
1985-2.7 C (27.1 F)
1986-2.2 C (28.0 F)
1987-1.5 C (29.3 F)
1988-1.2 C (29.8 F)
1989-2.0 C (28.4 F)
1990-1.5 C (29.3 F)
1991-1.5 C (29.3 F)
1992-2.5 C (27.5 F)
1993-1.0 C (30.2 F)
1994-1.5 C (29.3 F)
1995-2.1 C (28.2 F)
19967.2 C (45.0 F)
1997n/a
1998n/a
1999n/a
2000n/a
2001n/a
2002n/a
2003n/a
2004n/a
2005n/a
2006n/a
2007n/a
2008n/a
2009n/a
2010n/a
2011n/a
2012n/a
2013n/a
2014n/a
2015n/a
2016n/a
2017n/a
2018n/a
2019n/a
2020n/a
2021n/a
2022n/a
2023n/a
2024n/a
2025n/a
2026n/a

Wettest day (Rx1day)

Wettest day (Rx1day) at Forthside Research Station by year The wettest day of the year at Forthside Research Station, 1966 to 2026. The record is 124.4 mm (4.9 in) in 1989, marked on the chart; the median year is 51.4 mm (2.0 in). 050100150197019801990200020102020Record: 124.4 mm (4.9 in) in 1989
The wettest day of the year at Forthside Research Station, 1966 to 2026. The record is 124.4 mm (4.9 in) in 1989, marked on the chart; the median year is 51.4 mm (2.0 in).
Wettest day (Rx1day) at Forthside Research Station by year
YearWettest day (Rx1day)
196652.1 mm (2.1 in)
196735.1 mm (1.4 in)
196845.5 mm (1.8 in)
196969.3 mm (2.7 in)
197079.0 mm (3.1 in)
197159.9 mm (2.4 in)
197236.3 mm (1.4 in)
197351.1 mm (2.0 in)
197467.8 mm (2.7 in)
197556.0 mm (2.2 in)
197632.8 mm (1.3 in)
197785.0 mm (3.3 in)
197837.8 mm (1.5 in)
197947.6 mm (1.9 in)
198046.6 mm (1.8 in)
198133.2 mm (1.3 in)
198260.4 mm (2.4 in)
198390.0 mm (3.5 in)
198454.8 mm (2.2 in)
198561.2 mm (2.4 in)
198662.4 mm (2.5 in)
198743.8 mm (1.7 in)
198860.0 mm (2.4 in)
1989124.4 mm (4.9 in)
199046.6 mm (1.8 in)
199162.0 mm (2.4 in)
199295.4 mm (3.8 in)
199369.4 mm (2.7 in)
199448.2 mm (1.9 in)
199548.6 mm (1.9 in)
199653.2 mm (2.1 in)
199777.4 mm (3.0 in)
199867.6 mm (2.7 in)
199929.4 mm (1.2 in)
200082.2 mm (3.2 in)
200131.6 mm (1.2 in)
200254.4 mm (2.1 in)
200351.4 mm (2.0 in)
2004107.6 mm (4.2 in)
200568.6 mm (2.7 in)
200642.2 mm (1.7 in)
200737.0 mm (1.5 in)
200853.8 mm (2.1 in)
200930.6 mm (1.2 in)
201033.0 mm (1.3 in)
201169.8 mm (2.7 in)
201241.8 mm (1.6 in)
201354.8 mm (2.2 in)
201440.6 mm (1.6 in)
201522.0 mm (0.9 in)
201672.0 mm (2.8 in)
201727.8 mm (1.1 in)
201830.2 mm (1.2 in)
201923.2 mm (0.9 in)
202044.0 mm (1.7 in)
202137.6 mm (1.5 in)
202260.4 mm (2.4 in)
202354.8 mm (2.2 in)
202439.6 mm (1.6 in)
202524.4 mm (1.0 in)
202630.6 mm (1.2 in)

Wettest five days (Rx5day)

Wettest five days (Rx5day) at Forthside Research Station by year The wettest five days of the year at Forthside Research Station, 1966 to 2026. The record is 189.4 mm (7.5 in) in 1989, marked on the chart; the median year is 76.8 mm (3.0 in). 050100150200197019801990200020102020Record: 189.4 mm (7.5 in) in 1989
The wettest five days of the year at Forthside Research Station, 1966 to 2026. The record is 189.4 mm (7.5 in) in 1989, marked on the chart; the median year is 76.8 mm (3.0 in).
Wettest five days (Rx5day) at Forthside Research Station by year
YearWettest five days (Rx5day)
196699.8 mm (3.9 in)
196767.1 mm (2.6 in)
196886.6 mm (3.4 in)
1969129.8 mm (5.1 in)
1970161.9 mm (6.4 in)
197197.0 mm (3.8 in)
197258.9 mm (2.3 in)
1973113.0 mm (4.4 in)
197495.5 mm (3.8 in)
1975118.5 mm (4.7 in)
197676.8 mm (3.0 in)
1977156.4 mm (6.2 in)
197868.0 mm (2.7 in)
1979104.0 mm (4.1 in)
198093.4 mm (3.7 in)
198171.6 mm (2.8 in)
198285.0 mm (3.3 in)
1983106.8 mm (4.2 in)
198481.6 mm (3.2 in)
198572.8 mm (2.9 in)
1986104.6 mm (4.1 in)
198778.6 mm (3.1 in)
198888.2 mm (3.5 in)
1989189.4 mm (7.5 in)
199078.4 mm (3.1 in)
199198.6 mm (3.9 in)
1992113.0 mm (4.4 in)
199394.8 mm (3.7 in)
199460.6 mm (2.4 in)
1995106.4 mm (4.2 in)
199679.4 mm (3.1 in)
1997116.2 mm (4.6 in)
199886.8 mm (3.4 in)
199951.0 mm (2.0 in)
200039.8 mm (1.6 in)
200154.8 mm (2.2 in)
200254.8 mm (2.2 in)
200379.6 mm (3.1 in)
2004139.4 mm (5.5 in)
200580.6 mm (3.2 in)
200644.2 mm (1.7 in)
200753.0 mm (2.1 in)
200860.6 mm (2.4 in)
200938.4 mm (1.5 in)
201032.4 mm (1.3 in)
2011146.6 mm (5.8 in)
201237.6 mm (1.5 in)
201334.4 mm (1.4 in)
201440.9 mm (1.6 in)
201516.6 mm (0.7 in)
201645.6 mm (1.8 in)
201764.4 mm (2.5 in)
201824.4 mm (1.0 in)
201910.6 mm (0.4 in)
202058.0 mm (2.3 in)
202123.6 mm (0.9 in)
202227.0 mm (1.1 in)
202325.6 mm (1.0 in)
202414.4 mm (0.6 in)
20250.6 mm (0.02 in)
202614.2 mm (0.6 in)

Longest dry spell (CDD)

Longest dry spell (CDD) at Forthside Research Station by year The longest dry spell of the year at Forthside Research Station, 1966 to 2026. The record is 36 days in 1987, marked on the chart; the median year is 16 days. 010203040197019801990200020102020Record: 36 days in 1987
The longest dry spell of the year at Forthside Research Station, 1966 to 2026. The record is 36 days in 1987, marked on the chart; the median year is 16 days.
Longest dry spell (CDD) at Forthside Research Station by year
YearLongest dry spell (CDD)
196615 days
196733 days
196823 days
196915 days
197021 days
197129 days
197229 days
197312 days
197412 days
197525 days
197615 days
197713 days
197816 days
197915 days
198013 days
198114 days
198222 days
198326 days
198419 days
198522 days
198616 days
198736 days
198831 days
198922 days
199014 days
199134 days
199213 days
199313 days
199421 days
199514 days
199618 days
199716 days
199830 days
199913 days
200030 days
200125 days
200231 days
200329 days
200420 days
200528 days
200621 days
200718 days
200819 days
200921 days
201011 days
201111 days
201210 days
201311 days
201411 days
201513 days
20169 days
201718 days
201817 days
201917 days
20209 days
20217 days
20228 days
202311 days
20248 days
20255 days
20267 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 Forthside Research Station falls on 14 September and the median first autumn frost on 4 June, which leaves a median of 251 days between them.

Fitted over all years, the growing season changes by +22.6 days per decade at this station.

Frost dates and growing season at Forthside Research Station
MeasureMedian, all yearsEarliest periodRecent period (1966 to 1994)Recent against earliestFitted trend
Last spring frost14 Septembern/a14 Septembern/a-10.4 days per decade
First autumn frost4 Junen/a4 Junen/a+12.3 days per decade
Growing days251 daysn/a251 daysn/a+22.6 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

30 years, 1966 to 1995

A day with at least 54.3 mm (2.1 in) of rain is expected about once in 2 years. A day with at least 131.8 mm (5.2 in) of rain is expected about once in 100 years.

Rainfall return levels at Forthside Research Station: the daily rain expected about once in a given number of years
Expected about once inA day with at leastNote
2 years54.3 mm (2.1 in)
5 years72.1 mm (2.8 in)
10 years85.0 mm (3.3 in)
25 years102.7 mm (4.0 in)
50 years116.8 mm (4.6 in)Longer than the 30 years of record
100 years131.8 mm (5.2 in)Longer than the 30 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, 30 years of values from 1966 to 1995.

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: 124.4 mm (4.9 in) in 1989; 95.4 mm (3.8 in) in 1992; 90.0 mm (3.5 in) in 1983.

Download the Data

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