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Stormont Castle Weather Records (UKE00105877)

Record envelope, standing records and threshold days for Stormont Castle (UKE00105877), United Kingdom, with 68 years of record.

Key Facts for Stormont Castle

  • Stormont Castle (UKE00105877) is a weather station in United Kingdom at 54.60 latitude and -5.83 longitude, 56 m (184 ft) above sea level.
  • The station reports from 1959 to 2026, 68 years of record.
  • 1,464 records set at Stormont Castle still stand.
  • Records are tracked for tmax, tmin, prcp: an element needs 30 years of data to be eligible.
  • Stormont Castle tied a daily record high minimum temperature of 13.9 C (57.0 F) on 31 August 2026 (provisional).

Provisional Records

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

About the Station

  • Location: United Kingdom, 54.60 latitude, -5.83 longitude.
  • Elevation: 56 m (184 ft).
  • Period of record: 1959 to 2026, 68 years.
  • Eligible elements: tmax, tmin, prcp.

Daily Record Envelope and 2026

12 days at or beyond a record
Daily record high and record low at Stormont Castle, with 2026 drawn through them The band shows the record high and record low for each calendar day at Stormont Castle. The lines show the 2026 daily maximum and minimum. 12 days in 2026 matched or passed a record. Temperatures are in degrees Celsius. -100102030 JanFebMarAprMayJunJulAugSepOctNovDec
The band shows the record high and record low for each calendar day at Stormont Castle. The lines show the 2026 daily maximum and minimum. 12 days in 2026 matched or passed a record. Temperatures are in degrees Celsius.
Daily record high and record low at Stormont Castle, with 2026 drawn through them
MonthHighest record highLowest record low2026 highest maximum2026 lowest minimum
Jan14.7 C (58.5 F)-9.9 C (14.2 F)11.0 C (51.8 F)-2.4 C (27.7 F)
Feb15.8 C (60.4 F)-6.1 C (21.0 F)13.2 C (55.8 F)-1.6 C (29.1 F)
Mar20.1 C (68.2 F)-7.2 C (19.0 F)16.5 C (61.7 F)0.5 C (32.9 F)
Apr21.6 C (70.9 F)-5.6 C (21.9 F)19.2 C (66.6 F)1.1 C (34.0 F)
May25.0 C (77.0 F)-1.7 C (28.9 F)24.0 C (75.2 F)3.5 C (38.3 F)
Jun29.0 C (84.2 F)1.7 C (35.1 F)27.8 C (82.0 F)7.0 C (44.6 F)
Jul29.7 C (85.5 F)5.6 C (42.1 F)26.7 C (80.1 F)9.2 C (48.6 F)
Aug28.2 C (82.8 F)4.9 C (40.8 F)26.5 C (79.7 F)7.6 C (45.7 F)
Sep25.8 C (78.4 F)1.1 C (34.0 F)n/an/a
Oct20.6 C (69.1 F)-0.9 C (30.4 F)n/an/a
Nov17.1 C (62.8 F)-3.4 C (25.9 F)n/an/a
Dec15.0 C (59.0 F)-9.1 C (15.6 F)n/an/a

Which Years Hold Standing Records

1,464 standing records
Standing records at Stormont Castle by the year they were set 1,464 records at Stormont Castle still stand. 1979 holds the most, with 48. 02040601960: 131961: 241962: 271963: 361964: 131965: 261966: 291967: 221968: 181969: 311970: 211971: 181972: 151973: 201974: 131975: 141976: 311977: 261978: 301979: 481980: 131981: 291982: 221983: 271984: 141985: 261986: 291987: 261988: 141989: 251990: 141991: 181992: 201993: 121994: 151995: 401996: 151997: 161998: 331999: 122000: 142001: 62002: 112003: 242004: 122005: 112006: 212007: 292008: 182009: 132010: 272011: 312012: 252013: 292014: 92015: 202016: 232017: 202018: 312019: 202020: 152021: 262022: 262023: 282024: 302025: 312026: 191960196719741981198819952002200920162023
1,464 records at Stormont Castle still stand. 1979 holds the most, with 48.
Standing records at Stormont Castle by the year they were set
Year setStanding records
196013
196124
196227
196336
196413
196526
196629
196722
196818
196931
197021
197118
197215
197320
197413
197514
197631
197726
197830
197948
198013
198129
198222
198327
198414
198526
198629
198726
198814
198925
199014
199118
199220
199312
199415
199540
199615
199716
199833
199912
200014
20016
200211
200324
200412
200511
200621
200729
200818
200913
201027
201131
201225
201329
20149
201520
201623
201720
201831
201920
202015
202126
202226
202328
202430
202531
202619

All-Time Record Progression

3 new records
When Stormont Castle set new all-time records 3 all-time records were set at Stormont Castle between 20 July 1995 and 19 December 2010. Each dot is a new record. Record high minimum temperatureRecord low maximum temperature20 July 1995: Record high minimum temperature 19.0 C (66.2 F)26 December 1995: Record low maximum temperature -0.7 C (30.7 F)19 December 2010: Record low maximum temperature -2.0 C (28.4 F)1995200020052010
3 all-time records were set at Stormont Castle between 20 July 1995 and 19 December 2010. Each dot is a new record.
When Stormont Castle set new all-time records
DateKindDetail
1995-07-20Record high minimum temperatureRecord high minimum temperature 19.0 C (66.2 F)
1995-12-26Record low maximum temperatureRecord low maximum temperature -0.7 C (30.7 F)
2010-12-19Record low maximum temperatureRecord low maximum temperature -2.0 C (28.4 F)

Wettest Day of Each Month

Aug: 92.4 mm (3.6 in)
Record daily precipitation for each month at Stormont Castle The wettest day on record for each calendar month at Stormont Castle. The most was 92.4 mm (3.6 in) on 15 August 1970. 0255075100 Jan: 37.4 mm (1.5 in), 19 January 1973 Jan Feb: 38.4 mm (1.5 in), 6 February 1963 Feb Mar: 50.8 mm (2.0 in), 30 March 2010 Mar Apr: 40.6 mm (1.6 in), 15 April 1986 Apr May: 52.2 mm (2.1 in), 13 May 1993 May Jun: 52.4 mm (2.1 in), 27 June 2012 Jun Jul: 48.5 mm (1.9 in), 4 July 1971 Jul Aug: 92.4 mm (3.6 in), 15 August 1970 Aug Sep: 79.8 mm (3.1 in), 24 September 2012 Sep Oct: 56.0 mm (2.2 in), 14 October 1976 Oct Nov: 46.5 mm (1.8 in), 1 November 1968 Nov Dec: 45.5 mm (1.8 in), 28 December 1978 Dec
The wettest day on record for each calendar month at Stormont Castle. The most was 92.4 mm (3.6 in) on 15 August 1970.
Record daily precipitation for each month at Stormont Castle
MonthRecord daily precipitation (mm)Date
Jan37.4 mm (1.5 in)19 January 1973
Feb38.4 mm (1.5 in)6 February 1963
Mar50.8 mm (2.0 in)30 March 2010
Apr40.6 mm (1.6 in)15 April 1986
May52.2 mm (2.1 in)13 May 1993
Jun52.4 mm (2.1 in)27 June 2012
Jul48.5 mm (1.9 in)4 July 1971
Aug92.4 mm (3.6 in)15 August 1970
Sep79.8 mm (3.1 in)24 September 2012
Oct56.0 mm (2.2 in)14 October 1976
Nov46.5 mm (1.8 in)1 November 1968
Dec45.5 mm (1.8 in)28 December 1978

Period of Record Coverage

1959 to 2026
Days with data per year at Stormont Castle 68 years of record at Stormont Castle, 1959 to 2026. 5 years have data for under 90 percent of days and are left out of rankings: 1959, 2001, 2005, 2008, 2026. 1959: 1 of 365 days1960: 363 of 366 days1961: 363 of 365 days1962: 363 of 365 days1963: 362 of 365 days1964: 362 of 366 days1965: 365 of 365 days1966: 356 of 365 days1967: 363 of 365 days1968: 364 of 366 days1969: 355 of 365 days1970: 362 of 365 days1971: 361 of 365 days1972: 364 of 366 days1973: 360 of 365 days1974: 363 of 365 days1975: 363 of 365 days1976: 360 of 366 days1977: 359 of 365 days1978: 353 of 365 days1979: 362 of 365 days1980: 359 of 366 days1981: 360 of 365 days1982: 362 of 365 days1983: 360 of 365 days1984: 364 of 366 days1985: 361 of 365 days1986: 361 of 365 days1987: 362 of 365 days1988: 363 of 366 days1989: 364 of 365 days1990: 332 of 365 days1991: 363 of 365 days1992: 360 of 366 days1993: 359 of 365 days1994: 359 of 365 days1995: 361 of 365 days1996: 359 of 366 days1997: 356 of 365 days1998: 355 of 365 days1999: 356 of 365 days2000: 366 of 366 days2001: 278 of 365 days2002: 357 of 365 days2003: 362 of 365 days2004: 356 of 366 days2005: 309 of 365 days2006: 338 of 365 days2007: 353 of 365 days2008: 259 of 366 days2009: 338 of 365 days2010: 361 of 365 days2011: 360 of 365 days2012: 361 of 366 days2013: 359 of 365 days2014: 360 of 365 days2015: 356 of 365 days2016: 363 of 366 days2017: 357 of 365 days2018: 358 of 365 days2019: 361 of 365 days2020: 360 of 366 days2021: 359 of 365 days2022: 361 of 365 days2023: 355 of 365 days2024: 349 of 366 days2025: 363 of 365 days2026: 238 of 365 days1960197019801990200020102020
68 years of record at Stormont Castle, 1959 to 2026. 5 years have data for under 90 percent of days and are left out of rankings: 1959, 2001, 2005, 2008, 2026.
Days with data per year at Stormont Castle
YearDays with dataShare of yearComplete
195910%No
196036399%Yes
196136399%Yes
196236399%Yes
196336299%Yes
196436299%Yes
1965365100%Yes
196635698%Yes
196736399%Yes
196836499%Yes
196935597%Yes
197036299%Yes
197136199%Yes
197236499%Yes
197336099%Yes
197436399%Yes
197536399%Yes
197636098%Yes
197735998%Yes
197835397%Yes
197936299%Yes
198035998%Yes
198136099%Yes
198236299%Yes
198336099%Yes
198436499%Yes
198536199%Yes
198636199%Yes
198736299%Yes
198836399%Yes
1989364100%Yes
199033291%Yes
199136399%Yes
199236098%Yes
199335998%Yes
199435998%Yes
199536199%Yes
199635998%Yes
199735698%Yes
199835597%Yes
199935698%Yes
2000366100%Yes
200127876%No
200235798%Yes
200336299%Yes
200435697%Yes
200530985%No
200633893%Yes
200735397%Yes
200825971%No
200933893%Yes
201036199%Yes
201136099%Yes
201236199%Yes
201335998%Yes
201436099%Yes
201535698%Yes
201636399%Yes
201735798%Yes
201835898%Yes
201936199%Yes
202036098%Yes
202135998%Yes
202236199%Yes
202335597%Yes
202434995%Yes
202536399%Yes
202623865%No

Latest Records

20
Latest records at Stormont Castle
DateStationRecordValueBeat old record byOld record stoodSignificance
31 August 2026Stormont Castle, GBdaily high min (Tie, Provisional)13.9 C (57.0 F)tie56 years5 of 100 (Routine)
28 August 2026Stormont Castle, GBdaily high min (Provisional)15.6 C (60.1 F)0.4 C (0.7 F)8 years9 of 100 (Routine)
27 August 2026Stormont Castle, GBdaily high max (Provisional)23.1 C (73.6 F)0.5 C (0.9 F)4 years9 of 100 (Routine)
14 August 2026Stormont Castle, GBdaily high min (Tie)15.5 C (59.9 F)tie4 years1 of 100 (Routine)
12 August 2026Stormont Castle, GBdaily high max26.5 C (79.7 F)1.1 C (2.0 F)4 years11 of 100 (Routine)
9 August 2026Stormont Castle, GBdaily high min15.2 C (59.4 F)0.2 C (0.4 F)36 years17 of 100 (Routine)
29 July 2026Stormont Castle, GBdaily high min16.8 C (62.2 F)1.2 C (2.2 F)17 years16 of 100 (Routine)
27 July 2026Stormont Castle, GBdaily high max25.6 C (78.1 F)0.3 C (0.5 F)20 years13 of 100 (Routine)
10 July 2026Stormont Castle, GBdaily high min15.0 C (59.0 F)0.3 C (0.5 F)23 years13 of 100 (Routine)
7 July 2026Stormont Castle, GBdaily high max26.7 C (80.1 F)0.7 C (1.3 F)27 years16 of 100 (Routine)
27 June 2026Stormont Castle, GBdaily high min16.0 C (60.8 F)1.4 C (2.5 F)16 years17 of 100 (Routine)
26 June 2026Stormont Castle, GBmonthly high min18.1 C (64.6 F)1.4 C (2.5 F)3 years22 of 100 (Routine)
25 June 2026Stormont Castle, GBdaily high min15.4 C (59.7 F)0.1 C (0.2 F)3 years6 of 100 (Routine)
24 June 2026Stormont Castle, GBdaily high max27.8 C (82.0 F)2.4 C (4.3 F)5 years15 of 100 (Routine)
23 June 2026Stormont Castle, GBdaily high min15.1 C (59.2 F)0.1 C (0.2 F)65 years25 of 100 (Routine)
22 June 2026Stormont Castle, GBdaily high max26.5 C (79.7 F)2.8 C (5.0 F)20 years22 of 100 (Routine)
21 June 2026Stormont Castle, GBdaily high max23.5 C (74.3 F)0.6 C (1.1 F)31 years17 of 100 (Routine)
24 May 2026Stormont Castle, GBdaily high max (Tie)24.0 C (75.2 F)tie13 years2 of 100 (Routine)
22 May 2026Stormont Castle, GBdaily high min12.1 C (53.8 F)0.3 C (0.5 F)1 year7 of 100 (Routine)
24 April 2026Stormont Castle, GBdaily high max19.2 C (66.6 F)0.9 C (1.6 F)5 years10 of 100 (Routine)

Climate Trend

58 complete years, 1960 to 2025
Annual mean temperature at Stormont Castle as warming stripes, 1960 to 2025 One stripe for each of 58 complete years at Stormont Castle, 1960 to 2025. Blue stripes are years cooler than the station's own mean of 9.5 C (49.2 F); red stripes are warmer. The coolest year was 1979, at 8.1 C (46.5 F), and the warmest was 2025, at 10.9 C (51.7 F). The strongest colour marks a difference of 1.5 C (2.7 F). 1960: 9.4 C, -0.2 C from the station mean1961: 9.3 C, -0.3 C from the station mean1962: 8.7 C, -0.9 C from the station mean1963: 8.5 C, -1.1 C from the station mean1964: 9.3 C, -0.2 C from the station mean1965: 8.6 C, -1.0 C from the station mean1966: 9.1 C, -0.4 C from the station mean1967: 9.1 C, -0.4 C from the station mean1968: 9.1 C, -0.4 C from the station mean1969: 8.8 C, -0.7 C from the station mean1970: 9.2 C, -0.4 C from the station mean1971: 9.8 C, +0.3 C from the station mean1972: 9.0 C, -0.6 C from the station mean1973: 9.3 C, -0.3 C from the station mean1974: 9.1 C, -0.4 C from the station mean1975: 9.7 C, +0.1 C from the station mean1976: 9.4 C, -0.2 C from the station mean1977: 9.1 C, -0.5 C from the station mean1978: 9.1 C, -0.4 C from the station mean1979: 8.1 C, -1.5 C from the station mean1980: 9.0 C, -0.5 C from the station mean1981: 9.0 C, -0.6 C from the station mean1982: 9.2 C, -0.3 C from the station mean1983: 9.5 C, -0.1 C from the station mean1984: 9.3 C, -0.3 C from the station mean1985: 8.6 C, -1.0 C from the station mean1986: 8.4 C, -1.2 C from the station mean1987: 9.0 C, -0.5 C from the station mean1988: 9.3 C, -0.3 C from the station mean1989: 9.6 C, +0.1 C from the station mean1991: 9.4 C, -0.1 C from the station mean1992: 9.5 C, -0.1 C from the station mean1993: 9.4 C, -0.2 C from the station mean1994: 9.4 C, -0.1 C from the station mean1995: 10.3 C, +0.7 C from the station mean1996: 9.3 C, -0.2 C from the station mean1997: 10.1 C, +0.6 C from the station mean1998: 9.8 C, +0.3 C from the station mean1999: 10.0 C, +0.5 C from the station mean2000: 9.7 C, +0.2 C from the station mean2002: 10.2 C, +0.6 C from the station mean2003: 10.1 C, +0.6 C from the station mean2010: 9.2 C, -0.4 C from the station mean2011: 10.3 C, +0.7 C from the station mean2012: 9.8 C, +0.2 C from the station mean2013: 9.7 C, +0.2 C from the station mean2014: 10.5 C, +1.0 C from the station mean2015: 9.8 C, +0.3 C from the station mean2016: 10.3 C, +0.7 C from the station mean2017: 10.4 C, +0.8 C from the station mean2018: 10.1 C, +0.6 C from the station mean2019: 10.3 C, +0.7 C from the station mean2020: 10.2 C, +0.6 C from the station mean2021: 10.4 C, +0.8 C from the station mean2022: 10.8 C, +1.2 C from the station mean2023: 10.9 C, +1.4 C from the station mean2024: 10.5 C, +1.0 C from the station mean2025: 10.9 C, +1.4 C from the station mean1960197019801990200020102020
One stripe for each of 58 complete years at Stormont Castle, 1960 to 2025. Blue stripes are years cooler than the station's own mean of 9.5 C (49.2 F); red stripes are warmer. The coolest year was 1979, at 8.1 C (46.5 F), and the warmest was 2025, at 10.9 C (51.7 F). The strongest colour marks a difference of 1.5 C (2.7 F).
Annual mean temperature at Stormont Castle as warming stripes, 1960 to 2025
YearAnnual mean temperatureDifference from the station mean
19609.4 C-0.16 C
19619.3 C-0.26 C
19628.7 C-0.89 C
19638.5 C-1.09 C
19649.3 C-0.25 C
19658.6 C-0.99 C
19669.1 C-0.41 C
19679.1 C-0.44 C
19689.1 C-0.43 C
19698.8 C-0.74 C
19709.2 C-0.36 C
19719.8 C+0.28 C
19729.0 C-0.59 C
19739.3 C-0.28 C
19749.1 C-0.42 C
19759.7 C+0.13 C
19769.4 C-0.17 C
19779.1 C-0.48 C
19789.1 C-0.41 C
19798.1 C-1.48 C
19809.0 C-0.52 C
19819.0 C-0.60 C
19829.2 C-0.34 C
19839.5 C-0.10 C
19849.3 C-0.26 C
19858.6 C-0.98 C
19868.4 C-1.18 C
19879.0 C-0.51 C
19889.3 C-0.30 C
19899.6 C+0.07 C
19919.4 C-0.11 C
19929.5 C-0.06 C
19939.4 C-0.19 C
19949.4 C-0.13 C
199510.3 C+0.73 C
19969.3 C-0.21 C
199710.1 C+0.59 C
19989.8 C+0.25 C
199910.0 C+0.45 C
20009.7 C+0.15 C
200210.2 C+0.62 C
200310.1 C+0.58 C
20109.2 C-0.39 C
201110.3 C+0.72 C
20129.8 C+0.23 C
20139.7 C+0.19 C
201410.5 C+0.96 C
20159.8 C+0.29 C
201610.3 C+0.71 C
201710.4 C+0.83 C
201810.1 C+0.58 C
201910.3 C+0.74 C
202010.2 C+0.63 C
202110.4 C+0.83 C
202210.8 C+1.24 C
202310.9 C+1.37 C
202410.5 C+0.95 C
202510.9 C+1.37 C

The annual mean temperature here has risen by 0.3 C (0.2 to 0.3) per decade over 1960 to 2025. In Fahrenheit: 0.5 F (0.4 to 0.6) per decade. The slope is a straight line fitted to 58 complete years; the brackets give its 95 percent interval.

Fitted temperature trends per decade at Stormont Castle
MeasurePer decade (C)Per decade (F)PeriodComplete yearsReading
Annual mean temperature0.3 C (0.2 to 0.3) per decade0.5 F (0.4 to 0.6) per decade1960 to 202558Rise
Mean daily maximum0.3 C (0.2 to 0.3) per decade0.5 F (0.3 to 0.6) per decade1960 to 202558Rise
Mean daily minimum0.3 C (0.2 to 0.3) per decade0.5 F (0.4 to 0.6) per decade1960 to 202558Rise

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

1959 to 2026
Yearly extremes at Stormont Castle: the record and the median year
MeasureRecordYear of the recordMedian yearYears with a value
Hottest day (TXx)29.7 C (85.5 F)198324.2 C (75.6 F)68
Coldest night (TNn)-9.9 C (14.2 F)1982-3.9 C (25.0 F)67
Wettest day (Rx1day)92.4 mm (3.6 in)197033.8 mm (1.3 in)66
Wettest five days (Rx5day)122.5 mm (4.8 in)200765.9 mm (2.6 in)66
Longest dry spell (CDD)34 days198019 days66

Hottest day (TXx)

Hottest day (TXx) at Stormont Castle by year The hottest day of the year at Stormont Castle, 1959 to 2026. The record is 29.7 C (85.5 F) in 1983, marked on the chart; the median year is 24.2 C (75.6 F). 01020301960198020002020Record: 29.7 C (85.5 F) in 1983
The hottest day of the year at Stormont Castle, 1959 to 2026. The record is 29.7 C (85.5 F) in 1983, marked on the chart; the median year is 24.2 C (75.6 F).
Hottest day (TXx) at Stormont Castle by year
YearHottest day (TXx)
19598.3 C (46.9 F)
196024.4 C (75.9 F)
196123.9 C (75.0 F)
196223.9 C (75.0 F)
196322.8 C (73.0 F)
196423.3 C (73.9 F)
196521.7 C (71.1 F)
196623.9 C (75.0 F)
196722.2 C (72.0 F)
196823.3 C (73.9 F)
196923.9 C (75.0 F)
197026.1 C (79.0 F)
197124.1 C (75.4 F)
197224.7 C (76.5 F)
197324.5 C (76.1 F)
197422.8 C (73.0 F)
197526.0 C (78.8 F)
197626.5 C (79.7 F)
197726.5 C (79.7 F)
197823.2 C (73.8 F)
197922.7 C (72.9 F)
198021.2 C (70.2 F)
198124.1 C (75.4 F)
198224.6 C (76.3 F)
198329.7 C (85.5 F)
198424.5 C (76.1 F)
198522.7 C (72.9 F)
198623.8 C (74.8 F)
198723.9 C (75.0 F)
198822.0 C (71.6 F)
198926.4 C (79.5 F)
199026.2 C (79.2 F)
199124.9 C (76.8 F)
199223.6 C (74.5 F)
199322.0 C (71.6 F)
199423.0 C (73.4 F)
199528.2 C (82.8 F)
199624.3 C (75.7 F)
199725.6 C (78.1 F)
199823.3 C (73.9 F)
199926.4 C (79.5 F)
200023.1 C (73.6 F)
200123.8 C (74.8 F)
200224.1 C (75.4 F)
200327.0 C (80.6 F)
200424.1 C (75.4 F)
200527.7 C (81.9 F)
200628.4 C (83.1 F)
200724.0 C (75.2 F)
200824.1 C (75.4 F)
200926.2 C (79.2 F)
201025.0 C (77.0 F)
201124.0 C (75.2 F)
201224.1 C (75.4 F)
201327.1 C (80.8 F)
201426.7 C (80.1 F)
201523.4 C (74.1 F)
201624.9 C (76.8 F)
201724.3 C (75.7 F)
201829.0 C (84.2 F)
201925.5 C (77.9 F)
202025.4 C (77.7 F)
202128.7 C (83.7 F)
202228.5 C (83.3 F)
202326.7 C (80.1 F)
202422.9 C (73.2 F)
202526.6 C (79.9 F)
202627.8 C (82.0 F)

Coldest night (TNn)

Coldest night (TNn) at Stormont Castle by year The coldest night of the year at Stormont Castle, 1959 to 2026. The record is -9.9 C (14.2 F) in 1982, marked on the chart; the median year is -3.9 C (25.0 F). -10-7.5-5-2.501960198020002020Record: -9.9 C (14.2 F) in 1982
The coldest night of the year at Stormont Castle, 1959 to 2026. The record is -9.9 C (14.2 F) in 1982, marked on the chart; the median year is -3.9 C (25.0 F).
Coldest night (TNn) at Stormont Castle by year
YearColdest night (TNn)
1959n/a
1960-5.0 C (23.0 F)
1961-6.7 C (19.9 F)
1962-5.6 C (21.9 F)
1963-5.0 C (23.0 F)
1964-2.8 C (27.0 F)
1965-7.2 C (19.0 F)
1966-3.3 C (26.1 F)
1967-5.6 C (21.9 F)
1968-3.9 C (25.0 F)
1969-6.1 C (21.0 F)
1970-3.9 C (25.0 F)
1971-2.8 C (27.0 F)
1972-5.7 C (21.7 F)
1973-5.6 C (21.9 F)
1974-1.6 C (29.1 F)
1975-2.2 C (28.0 F)
1976-5.6 C (21.9 F)
1977-5.7 C (21.7 F)
1978-4.5 C (23.9 F)
1979-7.6 C (18.3 F)
1980-4.0 C (24.8 F)
1981-6.9 C (19.6 F)
1982-9.9 C (14.2 F)
1983-4.4 C (24.1 F)
1984-4.6 C (23.7 F)
1985-6.9 C (19.6 F)
1986-5.1 C (22.8 F)
1987-5.1 C (22.8 F)
1988-2.3 C (27.9 F)
1989-2.8 C (27.0 F)
1990-2.1 C (28.2 F)
1991-3.3 C (26.1 F)
1992-5.9 C (21.4 F)
1993-2.1 C (28.2 F)
1994-4.7 C (23.5 F)
1995-8.0 C (17.6 F)
1996-2.2 C (28.0 F)
1997-1.5 C (29.3 F)
1998-2.5 C (27.5 F)
1999-3.4 C (25.9 F)
2000-7.0 C (19.4 F)
2001-5.5 C (22.1 F)
2002-4.3 C (24.3 F)
2003-3.3 C (26.1 F)
2004-3.5 C (25.7 F)
2005-2.0 C (28.4 F)
2006-4.2 C (24.4 F)
2007-4.8 C (23.4 F)
2008-4.0 C (24.8 F)
2009-6.0 C (21.2 F)
2010-9.1 C (15.6 F)
2011-3.5 C (25.7 F)
2012-1.1 C (30.0 F)
2013-3.2 C (26.2 F)
2014-1.2 C (29.8 F)
2015-2.6 C (27.3 F)
2016-2.1 C (28.2 F)
2017-3.1 C (26.4 F)
2018-3.7 C (25.3 F)
2019-2.6 C (27.3 F)
2020-0.6 C (30.9 F)
2021-2.7 C (27.1 F)
2022-2.1 C (28.2 F)
2023-3.1 C (26.4 F)
2024-3.1 C (26.4 F)
2025-3.5 C (25.7 F)
2026-2.4 C (27.7 F)

Wettest day (Rx1day)

Wettest day (Rx1day) at Stormont Castle by year The wettest day of the year at Stormont Castle, 1959 to 2026. The record is 92.4 mm (3.6 in) in 1970, marked on the chart; the median year is 33.8 mm (1.3 in). 204060801001960198020002020Record: 92.4 mm (3.6 in) in 1970
The wettest day of the year at Stormont Castle, 1959 to 2026. The record is 92.4 mm (3.6 in) in 1970, marked on the chart; the median year is 33.8 mm (1.3 in).
Wettest day (Rx1day) at Stormont Castle by year
YearWettest day (Rx1day)
1959n/a
1960n/a
196131.2 mm (1.2 in)
196234.0 mm (1.3 in)
196338.4 mm (1.5 in)
196427.2 mm (1.1 in)
196530.2 mm (1.2 in)
196647.0 mm (1.9 in)
196736.3 mm (1.4 in)
196851.6 mm (2.0 in)
196938.8 mm (1.5 in)
197092.4 mm (3.6 in)
197148.5 mm (1.9 in)
197226.1 mm (1.0 in)
197337.4 mm (1.5 in)
197429.2 mm (1.1 in)
197526.4 mm (1.0 in)
197656.0 mm (2.2 in)
197733.7 mm (1.3 in)
197845.5 mm (1.8 in)
197932.0 mm (1.3 in)
198040.6 mm (1.6 in)
198140.5 mm (1.6 in)
198232.5 mm (1.3 in)
198332.8 mm (1.3 in)
198426.4 mm (1.0 in)
198528.0 mm (1.1 in)
198664.9 mm (2.6 in)
198744.1 mm (1.7 in)
198836.8 mm (1.4 in)
198942.0 mm (1.7 in)
199040.1 mm (1.6 in)
199130.2 mm (1.2 in)
199232.0 mm (1.3 in)
199352.2 mm (2.1 in)
199436.2 mm (1.4 in)
199531.5 mm (1.2 in)
199625.2 mm (1.0 in)
199738.2 mm (1.5 in)
199824.0 mm (0.9 in)
199933.7 mm (1.3 in)
200039.5 mm (1.6 in)
200121.0 mm (0.8 in)
200242.3 mm (1.7 in)
200321.4 mm (0.8 in)
200432.1 mm (1.3 in)
200537.1 mm (1.5 in)
200630.2 mm (1.2 in)
200741.9 mm (1.6 in)
200847.1 mm (1.9 in)
200927.9 mm (1.1 in)
201050.8 mm (2.0 in)
201130.8 mm (1.2 in)
201279.8 mm (3.1 in)
201331.3 mm (1.2 in)
201436.6 mm (1.4 in)
201551.0 mm (2.0 in)
201633.8 mm (1.3 in)
201728.0 mm (1.1 in)
201833.4 mm (1.3 in)
201936.4 mm (1.4 in)
202027.8 mm (1.1 in)
202122.8 mm (0.9 in)
202226.0 mm (1.0 in)
202332.6 mm (1.3 in)
202434.2 mm (1.3 in)
202523.6 mm (0.9 in)
202630.8 mm (1.2 in)

Wettest five days (Rx5day)

Wettest five days (Rx5day) at Stormont Castle by year The wettest five days of the year at Stormont Castle, 1959 to 2026. The record is 122.5 mm (4.8 in) in 2007, marked on the chart; the median year is 65.9 mm (2.6 in). 2550751001251960198020002020Record: 122.5 mm (4.8 in) in 2007
The wettest five days of the year at Stormont Castle, 1959 to 2026. The record is 122.5 mm (4.8 in) in 2007, marked on the chart; the median year is 65.9 mm (2.6 in).
Wettest five days (Rx5day) at Stormont Castle by year
YearWettest five days (Rx5day)
1959n/a
1960n/a
196146.2 mm (1.8 in)
196265.1 mm (2.6 in)
196366.1 mm (2.6 in)
196453.7 mm (2.1 in)
196562.2 mm (2.4 in)
196677.0 mm (3.0 in)
196769.6 mm (2.7 in)
1968108.0 mm (4.3 in)
196953.9 mm (2.1 in)
1970110.4 mm (4.3 in)
197197.0 mm (3.8 in)
197260.1 mm (2.4 in)
197357.8 mm (2.3 in)
197459.3 mm (2.3 in)
197548.1 mm (1.9 in)
197687.3 mm (3.4 in)
197755.7 mm (2.2 in)
1978100.0 mm (3.9 in)
197952.6 mm (2.1 in)
198065.2 mm (2.6 in)
198184.9 mm (3.3 in)
198283.4 mm (3.3 in)
198347.3 mm (1.9 in)
198449.8 mm (2.0 in)
198556.0 mm (2.2 in)
198689.3 mm (3.5 in)
198777.8 mm (3.1 in)
198858.8 mm (2.3 in)
198975.9 mm (3.0 in)
199057.2 mm (2.3 in)
199190.0 mm (3.5 in)
199258.1 mm (2.3 in)
1993119.6 mm (4.7 in)
199458.8 mm (2.3 in)
199586.5 mm (3.4 in)
199663.4 mm (2.5 in)
199773.8 mm (2.9 in)
199858.6 mm (2.3 in)
199981.9 mm (3.2 in)
200097.1 mm (3.8 in)
200142.4 mm (1.7 in)
200286.7 mm (3.4 in)
200361.4 mm (2.4 in)
200472.0 mm (2.8 in)
200546.4 mm (1.8 in)
200648.9 mm (1.9 in)
2007122.5 mm (4.8 in)
200882.1 mm (3.2 in)
200953.0 mm (2.1 in)
201086.8 mm (3.4 in)
201162.8 mm (2.5 in)
201299.8 mm (3.9 in)
201381.2 mm (3.2 in)
201465.8 mm (2.6 in)
201576.2 mm (3.0 in)
201676.4 mm (3.0 in)
201755.8 mm (2.2 in)
201877.8 mm (3.1 in)
201968.4 mm (2.7 in)
202063.4 mm (2.5 in)
202168.8 mm (2.7 in)
202245.8 mm (1.8 in)
2023121.0 mm (4.8 in)
202469.8 mm (2.7 in)
202557.4 mm (2.3 in)
202664.4 mm (2.5 in)

Longest dry spell (CDD)

Longest dry spell (CDD) at Stormont Castle by year The longest dry spell of the year at Stormont Castle, 1959 to 2026. The record is 34 days in 1980, marked on the chart; the median year is 19 days. 102030401960198020002020Record: 34 days in 1980
The longest dry spell of the year at Stormont Castle, 1959 to 2026. The record is 34 days in 1980, marked on the chart; the median year is 19 days.
Longest dry spell (CDD) at Stormont Castle by year
YearLongest dry spell (CDD)
1959n/a
1960n/a
196118 days
196222 days
196316 days
196414 days
196515 days
196618 days
196713 days
196820 days
196914 days
197013 days
197117 days
197226 days
197316 days
197419 days
197521 days
197626 days
197722 days
197824 days
197912 days
198034 days
198116 days
198225 days
198322 days
198424 days
198519 days
198628 days
198715 days
198818 days
198917 days
199012 days
199126 days
199224 days
199325 days
199416 days
199521 days
199627 days
199727 days
199813 days
199912 days
200019 days
200116 days
200220 days
200319 days
200427 days
200514 days
200618 days
200726 days
200821 days
200912 days
201020 days
201121 days
201212 days
201321 days
201432 days
201513 days
201613 days
201716 days
201824 days
201914 days
202023 days
202120 days
202216 days
202320 days
202414 days
202514 days
202620 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

53 years with a frost

Across 53 years with a frost, the median last spring frost at Stormont Castle falls on 29 March and the median first autumn frost on 18 November, which leaves a median of 232 days between them.

Fitted over all years, the growing season changes by +9.0 days per decade at this station.

Frost dates and growing season at Stormont Castle
MeasureMedian, all yearsEarliest periodRecent period (1983 to 2025)Recent against earliestFitted trend
Last spring frost29 Marchn/a27 Marchn/a-5.8 days per decade
First autumn frost18 Novembern/a21 Novembern/a+3.2 days per decade
Growing days232 daysn/a244 daysn/a+9.0 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

62 years, 1961 to 2025

A day with at least 34.1 mm (1.3 in) of rain is expected about once in 2 years. A day with at least 85.5 mm (3.4 in) of rain is expected about once in 100 years.

Rainfall return levels at Stormont Castle: the daily rain expected about once in a given number of years
Expected about once inA day with at leastNote
2 years34.1 mm (1.3 in)
5 years43.9 mm (1.7 in)
10 years51.8 mm (2.0 in)
25 years63.5 mm (2.5 in)
50 years73.8 mm (2.9 in)
100 years85.5 mm (3.4 in)Longer than the 62 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, 62 years of values from 1961 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: 92.4 mm (3.6 in) in 1970; 79.8 mm (3.1 in) in 2012; 64.9 mm (2.6 in) in 1986.

Station Changes

1 suspected

One change was suspected in the annual mean temperature of Stormont Castle, at 2010. Each is measured against neighbouring stations.

  • Relative to 5 neighbouring stations, the station's annual mean temperature from 2010 ran 0.1 C (0.3 F) higher than in the years before (possible change).
Suspected changes in the annual mean temperature at Stormont Castle, against neighbouring stations
YearShift (C)Shift (F)StrengthNeighbours
2010+0.1+0.3possible5

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

2011 to 2025 against 1961 to 1990

Over 2011 to 2025, Stormont Castle had a mean temperature of 10.3 C (50.6 F) and 989.4 mm (39.0 in) of rain a year. The 3 stations whose 1961 to 1990 climate was closest to that are El Salto (Smn) (Mexico, 8,457 km away), Plymouth: Mountbatten (United Kingdom, 486 km away) and St Mawgan (United Kingdom, 467 km away).

Climate twins of Stormont Castle: stations whose 1961 to 1990 climate is closest to its 2011 to 2025 climate
Twin stationCountryDistance awayMean temperature, 1961-1990Rain a year, 1961-1990Climate difference
El Salto (Smn)Mexico8,457 km (5,255 mi)10.1 C (50.1 F)980.4 mm (38.6 in)0.47
Plymouth: MountbattenUnited Kingdom486 km (302 mi)10.6 C (51.1 F)982.2 mm (38.7 in)0.51
St MawganUnited Kingdom467 km (290 mi)10.3 C (50.6 F)1,003.6 mm (39.5 in)0.52

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