Built 2026-10-19 (19 October 2026)

Durham Weather Records (USC00172048)

Record envelope, standing records and threshold days for Durham (USC00172048), Maine, United States, with 34 years of record.

Key Facts for Durham

  • Durham (USC00172048) is a weather station in Maine, United States at 44.00 latitude and -70.10 longitude, 43 m (140 ft) above sea level.
  • The station reports from 1993 to 2026, 34 years of record.
  • 1,464 records set at Durham still stand.
  • Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
  • Durham set a daily record high maximum temperature of 27.2 C (81.0 F) on 3 October 2026 (provisional).

Provisional Records

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

About the Station

  • Location: Maine, United States, 44.00 latitude, -70.10 longitude.
  • Elevation: 43 m (140 ft).
  • Period of record: 1993 to 2026, 34 years.
  • Eligible elements: tmax, tmin, prcp, snow, snwd.

Daily Record Envelope and 2026

16 days at or beyond a record
Daily record high and record low at Durham, with 2026 drawn through them The band shows the record high and record low for each calendar day at Durham. The lines show the 2026 daily maximum and minimum. 16 days in 2026 matched or passed a record. Temperatures are in degrees Celsius. -40-2002040 JanFebMarAprMayJunJulAugSepOctNovDec
The band shows the record high and record low for each calendar day at Durham. The lines show the 2026 daily maximum and minimum. 16 days in 2026 matched or passed a record. Temperatures are in degrees Celsius.
Daily record high and record low at Durham, with 2026 drawn through them
MonthHighest record highLowest record low2026 highest maximum2026 lowest minimum
Jan16.7 C (62.1 F)-32.8 C (-27.0 F)7.8 C (46.0 F)-26.1 C (-15.0 F)
Feb17.8 C (64.0 F)-30.6 C (-23.1 F)7.2 C (45.0 F)-26.1 C (-15.0 F)
Mar30.0 C (86.0 F)-26.1 C (-15.0 F)22.2 C (72.0 F)-20.6 C (-5.1 F)
Apr32.8 C (91.0 F)-11.1 C (12.0 F)23.3 C (73.9 F)-5.6 C (21.9 F)
May35.0 C (95.0 F)-4.4 C (24.1 F)35.0 C (95.0 F)-1.7 C (28.9 F)
Jun37.2 C (99.0 F)-0.6 C (30.9 F)32.2 C (90.0 F)4.4 C (39.9 F)
Jul36.1 C (97.0 F)6.7 C (44.1 F)36.1 C (97.0 F)8.3 C (46.9 F)
Aug36.1 C (97.0 F)2.8 C (37.0 F)34.4 C (93.9 F)9.4 C (48.9 F)
Sep36.1 C (97.0 F)-2.8 C (27.0 F)30.0 C (86.0 F)2.8 C (37.0 F)
Oct30.6 C (87.1 F)-7.8 C (18.0 F)27.2 C (81.0 F)-1.1 C (30.0 F)
Nov25.0 C (77.0 F)-16.1 C (3.0 F)n/an/a
Dec20.0 C (68.0 F)-30.6 C (-23.1 F)n/an/a

Which Years Hold Standing Records

1,464 standing records
Standing records at Durham by the year they were set 1,464 records at Durham still stand. 1996 holds the most, with 70. 0204060801994: 171995: 681996: 701997: 551998: 451999: 642000: 542001: 532002: 642003: 622004: 322005: 412006: 372007: 602008: 432009: 382010: 462011: 422012: 402013: 372014: 282015: 472016: 462017: 492018: 492019: 322020: 302021: 432022: 342023: 512024: 292025: 362026: 22199419982002200620102014201820222026
1,464 records at Durham still stand. 1996 holds the most, with 70.
Standing records at Durham by the year they were set
Year setStanding records
199417
199568
199670
199755
199845
199964
200054
200153
200264
200362
200432
200541
200637
200760
200843
200938
201046
201142
201240
201337
201428
201547
201646
201749
201849
201932
202030
202143
202234
202351
202429
202536
202622

All-Time Record Progression

1 new records
When Durham set new all-time records 1 all-time records were set at Durham between 25 June 2025 and 25 June 2025. Each dot is a new record. Record high maximum temperature25 June 2025: Record high maximum temperature 37.2 C (99.0 F)2025
1 all-time records were set at Durham between 25 June 2025 and 25 June 2025. Each dot is a new record.
When Durham set new all-time records
DateKindDetail
2025-06-25Record high maximum temperatureRecord high maximum temperature 37.2 C (99.0 F)

Wettest Day of Each Month

Jun: 149.4 mm (5.9 in)
Record daily precipitation for each month at Durham The wettest day on record for each calendar month at Durham. The most was 149.4 mm (5.9 in) on 14 June 1998. 050100150 Jan: 78.5 mm (3.1 in), 10 January 2024 Jan Feb: 78.5 mm (3.1 in), 26 February 2010 Feb Mar: 92.7 mm (3.6 in), 23 March 2001 Mar Apr: 98.8 mm (3.9 in), 17 April 1996 Apr May: 113.5 mm (4.5 in), 1 May 2023 May Jun: 149.4 mm (5.9 in), 14 June 1998 Jun Jul: 111.0 mm (4.4 in), 14 July 1996 Jul Aug: 116.6 mm (4.6 in), 14 August 2014 Aug Sep: 141.7 mm (5.6 in), 7 September 2008 Sep Oct: 134.1 mm (5.3 in), 9 October 2005 Oct Nov: 108.2 mm (4.3 in), 15 November 2009 Nov Dec: 69.9 mm (2.8 in), 13 December 2010 Dec
The wettest day on record for each calendar month at Durham. The most was 149.4 mm (5.9 in) on 14 June 1998.
Record daily precipitation for each month at Durham
MonthRecord daily precipitation (mm)Date
Jan78.5 mm (3.1 in)10 January 2024
Feb78.5 mm (3.1 in)26 February 2010
Mar92.7 mm (3.6 in)23 March 2001
Apr98.8 mm (3.9 in)17 April 1996
May113.5 mm (4.5 in)1 May 2023
Jun149.4 mm (5.9 in)14 June 1998
Jul111.0 mm (4.4 in)14 July 1996
Aug116.6 mm (4.6 in)14 August 2014
Sep141.7 mm (5.6 in)7 September 2008
Oct134.1 mm (5.3 in)9 October 2005
Nov108.2 mm (4.3 in)15 November 2009
Dec69.9 mm (2.8 in)13 December 2010

Period of Record Coverage

1994 to 2026
Days with data per year at Durham 33 years of record at Durham, 1994 to 2026. 3 years have data for under 90 percent of days and are left out of rankings: 1994, 2005, 2026. 1994: 122 of 365 days1995: 364 of 365 days1996: 366 of 366 days1997: 365 of 365 days1998: 365 of 365 days1999: 365 of 365 days2000: 335 of 366 days2001: 365 of 365 days2002: 365 of 365 days2003: 365 of 365 days2004: 366 of 366 days2005: 307 of 365 days2006: 365 of 365 days2007: 365 of 365 days2008: 366 of 366 days2009: 365 of 365 days2010: 365 of 365 days2011: 365 of 365 days2012: 366 of 366 days2013: 365 of 365 days2014: 365 of 365 days2015: 365 of 365 days2016: 366 of 366 days2017: 365 of 365 days2018: 365 of 365 days2019: 365 of 365 days2020: 366 of 366 days2021: 365 of 365 days2022: 365 of 365 days2023: 365 of 365 days2024: 366 of 366 days2025: 365 of 365 days2026: 286 of 365 days1995200020052010201520202025
33 years of record at Durham, 1994 to 2026. 3 years have data for under 90 percent of days and are left out of rankings: 1994, 2005, 2026.
Days with data per year at Durham
YearDays with dataShare of yearComplete
199412233%No
1995364100%Yes
1996366100%Yes
1997365100%Yes
1998365100%Yes
1999365100%Yes
200033592%Yes
2001365100%Yes
2002365100%Yes
2003365100%Yes
2004366100%Yes
200530784%No
2006365100%Yes
2007365100%Yes
2008366100%Yes
2009365100%Yes
2010365100%Yes
2011365100%Yes
2012366100%Yes
2013365100%Yes
2014365100%Yes
2015365100%Yes
2016366100%Yes
2017365100%Yes
2018365100%Yes
2019365100%Yes
2020366100%Yes
2021365100%Yes
2022365100%Yes
2023365100%Yes
2024366100%Yes
2025365100%Yes
202628678%No

Latest Records

20
Latest records at Durham
DateStationRecordValueBeat old record byOld record stoodSignificance
3 October 2026Durham, USdaily high max (Provisional)27.2 C (81.0 F)1.1 C (2.0 F)31 years14 of 100 (Routine)
2 October 2026Durham, USdaily high min (Provisional)13.3 C (55.9 F)1.6 C (2.9 F)17 years11 of 100 (Routine)
21 September 2026Durham, USdaily low max (Tie, Provisional)13.3 C (55.9 F)tie4 years1 of 100 (Routine)
18 August 2026Durham, USdaily high min (Tie)17.8 C (64.0 F)tie28 years2 of 100 (Routine)
8 August 2026Durham, USdaily high min (Tie)20.6 C (69.1 F)tie4 years1 of 100 (Routine)
7 August 2026Durham, USdaily high max34.4 C (93.9 F)1.1 C (2.0 F)29 years14 of 100 (Routine)
22 July 2026Durham, USdaily low max (Tie)22.8 C (73.0 F)tie29 years2 of 100 (Routine)
10 July 2026Durham, USdaily high max31.7 C (89.1 F)0.6 C (1.1 F)17 years9 of 100 (Routine)
4 July 2026Durham, USdaily high min (Tie)19.4 C (66.9 F)tie24 years2 of 100 (Routine)
3 July 2026Durham, USdaily high min21.1 C (70.0 F)2.8 C (5.0 F)24 years18 of 100 (Routine)
3 July 2026Durham, USmonthly high max (Tie)36.1 C (97.0 F)tie26 years5 of 100 (Routine)
2 July 2026Durham, USdaily high max33.9 C (93.0 F)1.7 C (3.1 F)28 years15 of 100 (Routine)
2 July 2026Durham, USdaily high min19.4 C (66.9 F)1.1 C (2.0 F)12 years9 of 100 (Routine)
23 June 2026Durham, USdaily rain29.5 mm (1.2 in)11.7 mm (0.5 in)29 years19 of 100 (Routine)
12 June 2026Durham, USdaily high min18.3 C (64.9 F)1.6 C (2.9 F)20 years13 of 100 (Routine)
11 June 2026Durham, USdaily high min (Tie)14.4 C (57.9 F)tie17 years2 of 100 (Routine)
4 June 2026Durham, USdaily high max29.4 C (84.9 F)0.5 C (0.9 F)27 years11 of 100 (Routine)
21 May 2026Durham, USdaily high max32.2 C (90.0 F)3.3 C (5.9 F)13 years12 of 100 (Routine)
20 May 2026Durham, USmonthly high max (Tie)35.0 C (95.0 F)tie9 years3 of 100 (Routine)
18 May 2026Durham, USdaily high max29.4 C (84.9 F)3.3 C (5.9 F)11 years11 of 100 (Routine)

Climate Trend

29 complete years, 1995 to 2025
Annual mean temperature at Durham as warming stripes, 1995 to 2025 One stripe for each of 29 complete years at Durham, 1995 to 2025. Blue stripes are years cooler than the station's own mean of 7.3 C (45.1 F); red stripes are warmer. The coolest year was 2007, at 5.6 C (42.1 F), and the warmest was 2024, at 9.1 C (48.4 F). The strongest colour marks a difference of 1.9 C (3.4 F). 1995: 7.1 C, -0.2 C from the station mean1996: 6.9 C, -0.4 C from the station mean1997: 6.2 C, -1.1 C from the station mean1998: 7.9 C, +0.6 C from the station mean1999: 8.2 C, +0.9 C from the station mean2001: 7.1 C, -0.2 C from the station mean2002: 7.2 C, -0.1 C from the station mean2003: 5.9 C, -1.4 C from the station mean2004: 6.4 C, -0.9 C from the station mean2006: 8.1 C, +0.8 C from the station mean2007: 5.6 C, -1.7 C from the station mean2008: 6.2 C, -1.1 C from the station mean2009: 6.0 C, -1.3 C from the station mean2010: 8.5 C, +1.2 C from the station mean2011: 7.6 C, +0.3 C from the station mean2012: 8.3 C, +1.0 C from the station mean2013: 7.3 C, 0.0 C from the station mean2014: 6.7 C, -0.6 C from the station mean2015: 6.8 C, -0.5 C from the station mean2016: 8.2 C, +0.9 C from the station mean2017: 7.2 C, -0.1 C from the station mean2018: 6.7 C, -0.6 C from the station mean2019: 6.2 C, -1.1 C from the station mean2020: 7.6 C, +0.3 C from the station mean2021: 8.4 C, +1.1 C from the station mean2022: 8.1 C, +0.8 C from the station mean2023: 8.8 C, +1.5 C from the station mean2024: 9.1 C, +1.8 C from the station mean2025: 7.3 C, 0.0 C from the station mean1995200020052010201520202025
One stripe for each of 29 complete years at Durham, 1995 to 2025. Blue stripes are years cooler than the station's own mean of 7.3 C (45.1 F); red stripes are warmer. The coolest year was 2007, at 5.6 C (42.1 F), and the warmest was 2024, at 9.1 C (48.4 F). The strongest colour marks a difference of 1.9 C (3.4 F).
Annual mean temperature at Durham as warming stripes, 1995 to 2025
YearAnnual mean temperatureDifference from the station mean
19957.1 C-0.19 C
19966.9 C-0.37 C
19976.2 C-1.14 C
19987.9 C+0.58 C
19998.2 C+0.86 C
20017.1 C-0.22 C
20027.2 C-0.07 C
20035.9 C-1.38 C
20046.4 C-0.87 C
20068.1 C+0.78 C
20075.6 C-1.69 C
20086.2 C-1.09 C
20096.0 C-1.33 C
20108.5 C+1.23 C
20117.6 C+0.33 C
20128.3 C+1.01 C
20137.3 C-0.03 C
20146.7 C-0.61 C
20156.8 C-0.48 C
20168.2 C+0.93 C
20177.2 C-0.07 C
20186.7 C-0.59 C
20196.2 C-1.08 C
20207.6 C+0.26 C
20218.4 C+1.09 C
20228.1 C+0.79 C
20238.8 C+1.52 C
20249.1 C+1.81 C
20257.3 C+0.04 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

1993 to 2026
Yearly extremes at Durham: the record and the median year
MeasureRecordYear of the recordMedian yearYears with a value
Hottest day (TXx)37.2 C (99.0 F)202533.9 C (93.0 F)33
Coldest night (TNn)-32.8 C (-27.0 F)2009-26.1 C (-15.0 F)33
Wettest day (Rx1day)149.4 mm (5.9 in)199877.1 mm (3.0 in)34
Wettest five days (Rx5day)213.9 mm (8.4 in)1998115.8 mm (4.6 in)34
Longest dry spell (CDD)28 days200915 days34

Hottest day (TXx)

Hottest day (TXx) at Durham by year The hottest day of the year at Durham, 1993 to 2026. The record is 37.2 C (99.0 F) in 2025, marked on the chart; the median year is 33.9 C (93.0 F). 27.53032.53537.5200020102020Record: 37.2 C (99.0 F) in 2025
The hottest day of the year at Durham, 1993 to 2026. The record is 37.2 C (99.0 F) in 2025, marked on the chart; the median year is 33.9 C (93.0 F).
Hottest day (TXx) at Durham by year
YearHottest day (TXx)
1993n/a
199428.3 C (82.9 F)
199535.6 C (96.1 F)
199633.3 C (91.9 F)
199733.3 C (91.9 F)
199833.3 C (91.9 F)
199936.1 C (97.0 F)
200032.8 C (91.0 F)
200136.1 C (97.0 F)
200235.6 C (96.1 F)
200334.4 C (93.9 F)
200433.3 C (91.9 F)
200533.9 C (93.0 F)
200633.3 C (91.9 F)
200733.3 C (91.9 F)
200832.2 C (90.0 F)
200932.8 C (91.0 F)
201033.3 C (91.9 F)
201135.0 C (95.0 F)
201231.7 C (89.1 F)
201333.9 C (93.0 F)
201430.6 C (87.1 F)
201532.2 C (90.0 F)
201633.9 C (93.0 F)
201735.0 C (95.0 F)
201835.0 C (95.0 F)
201933.3 C (91.9 F)
202033.9 C (93.0 F)
202135.0 C (95.0 F)
202233.9 C (93.0 F)
202333.9 C (93.0 F)
202436.1 C (97.0 F)
202537.2 C (99.0 F)
202636.1 C (97.0 F)

Coldest night (TNn)

Coldest night (TNn) at Durham by year The coldest night of the year at Durham, 1993 to 2026. The record is -32.8 C (-27.0 F) in 2009, marked on the chart; the median year is -26.1 C (-15.0 F). -35-30-25-20-15200020102020Record: -32.8 C (-27.0 F) in 2009
The coldest night of the year at Durham, 1993 to 2026. The record is -32.8 C (-27.0 F) in 2009, marked on the chart; the median year is -26.1 C (-15.0 F).
Coldest night (TNn) at Durham by year
YearColdest night (TNn)
1993n/a
1994-18.9 C (-2.0 F)
1995-28.9 C (-20.0 F)
1996-28.3 C (-18.9 F)
1997-25.6 C (-14.1 F)
1998-23.9 C (-11.0 F)
1999-27.8 C (-18.0 F)
2000-28.3 C (-18.9 F)
2001-25.6 C (-14.1 F)
2002-22.2 C (-8.0 F)
2003-30.6 C (-23.1 F)
2004-25.6 C (-14.1 F)
2005-30.0 C (-22.0 F)
2006-18.3 C (-0.9 F)
2007-26.1 C (-15.0 F)
2008-27.8 C (-18.0 F)
2009-32.8 C (-27.0 F)
2010-21.1 C (-6.0 F)
2011-27.2 C (-17.0 F)
2012-24.4 C (-11.9 F)
2013-25.6 C (-14.1 F)
2014-28.3 C (-18.9 F)
2015-28.9 C (-20.0 F)
2016-25.6 C (-14.1 F)
2017-30.6 C (-23.1 F)
2018-30.0 C (-22.0 F)
2019-24.4 C (-11.9 F)
2020-23.9 C (-11.0 F)
2021-22.8 C (-9.0 F)
2022-26.1 C (-15.0 F)
2023-25.6 C (-14.1 F)
2024-17.8 C (0.0 F)
2025-26.1 C (-15.0 F)
2026-26.1 C (-15.0 F)

Wettest day (Rx1day)

Wettest day (Rx1day) at Durham by year The wettest day of the year at Durham, 1993 to 2026. The record is 149.4 mm (5.9 in) in 1998, marked on the chart; the median year is 77.1 mm (3.0 in). 050100150200020102020Record: 149.4 mm (5.9 in) in 1998
The wettest day of the year at Durham, 1993 to 2026. The record is 149.4 mm (5.9 in) in 1998, marked on the chart; the median year is 77.1 mm (3.0 in).
Wettest day (Rx1day) at Durham by year
YearWettest day (Rx1day)
199359.4 mm (2.3 in)
199493.5 mm (3.7 in)
199552.6 mm (2.1 in)
1996111.0 mm (4.4 in)
199784.8 mm (3.3 in)
1998149.4 mm (5.9 in)
1999130.3 mm (5.1 in)
200049.0 mm (1.9 in)
200192.7 mm (3.6 in)
200246.5 mm (1.8 in)
200343.9 mm (1.7 in)
200460.5 mm (2.4 in)
2005134.1 mm (5.3 in)
200675.7 mm (3.0 in)
200768.1 mm (2.7 in)
2008141.7 mm (5.6 in)
2009108.2 mm (4.3 in)
201078.5 mm (3.1 in)
201166.8 mm (2.6 in)
2012138.4 mm (5.4 in)
201369.3 mm (2.7 in)
2014116.6 mm (4.6 in)
2015119.4 mm (4.7 in)
2016118.6 mm (4.7 in)
201748.3 mm (1.9 in)
201853.6 mm (2.1 in)
201959.7 mm (2.4 in)
202065.5 mm (2.6 in)
202186.6 mm (3.4 in)
202266.3 mm (2.6 in)
2023113.5 mm (4.5 in)
202478.5 mm (3.1 in)
202568.1 mm (2.7 in)
202643.9 mm (1.7 in)

Wettest five days (Rx5day)

Wettest five days (Rx5day) at Durham by year The wettest five days of the year at Durham, 1993 to 2026. The record is 213.9 mm (8.4 in) in 1998, marked on the chart; the median year is 115.8 mm (4.6 in). 50100150200250200020102020Record: 213.9 mm (8.4 in) in 1998
The wettest five days of the year at Durham, 1993 to 2026. The record is 213.9 mm (8.4 in) in 1998, marked on the chart; the median year is 115.8 mm (4.6 in).
Wettest five days (Rx5day) at Durham by year
YearWettest five days (Rx5day)
199363.0 mm (2.5 in)
1994112.3 mm (4.4 in)
199584.1 mm (3.3 in)
1996121.7 mm (4.8 in)
199793.1 mm (3.7 in)
1998213.9 mm (8.4 in)
1999157.0 mm (6.2 in)
200081.5 mm (3.2 in)
2001107.1 mm (4.2 in)
200283.5 mm (3.3 in)
200379.2 mm (3.1 in)
200484.8 mm (3.3 in)
2005195.9 mm (7.7 in)
2006113.0 mm (4.4 in)
2007141.8 mm (5.6 in)
2008158.2 mm (6.2 in)
2009108.7 mm (4.3 in)
2010150.7 mm (5.9 in)
201191.2 mm (3.6 in)
2012195.6 mm (7.7 in)
2013120.5 mm (4.7 in)
2014118.6 mm (4.7 in)
2015162.8 mm (6.4 in)
2016139.2 mm (5.5 in)
2017118.9 mm (4.7 in)
201871.6 mm (2.8 in)
201987.6 mm (3.4 in)
2020154.9 mm (6.1 in)
2021107.6 mm (4.2 in)
2022149.9 mm (5.9 in)
2023142.2 mm (5.6 in)
2024133.9 mm (5.3 in)
202585.6 mm (3.4 in)
202654.9 mm (2.2 in)

Longest dry spell (CDD)

Longest dry spell (CDD) at Durham by year The longest dry spell of the year at Durham, 1993 to 2026. The record is 28 days in 2009, marked on the chart; the median year is 15 days. 51015202530200020102020Record: 28 days in 2009
The longest dry spell of the year at Durham, 1993 to 2026. The record is 28 days in 2009, marked on the chart; the median year is 15 days.
Longest dry spell (CDD) at Durham by year
YearLongest dry spell (CDD)
19938 days
199411 days
199515 days
199619 days
199717 days
199813 days
199919 days
200012 days
200114 days
200213 days
200316 days
200415 days
200515 days
200617 days
200714 days
200817 days
200928 days
201018 days
201117 days
201219 days
201315 days
201411 days
201515 days
201615 days
201720 days
201814 days
201914 days
202021 days
202120 days
202215 days
202317 days
202424 days
202516 days
202612 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

29 years with a frost

Across 29 years with a frost, the median last spring frost at Durham falls on 11 May and the median first autumn frost on 6 October, which leaves a median of 148 days between them.

Fitted over all years, the growing season changes by +9.3 days per decade at this station.

Frost dates and growing season at Durham
MeasureMedian, all yearsEarliest periodRecent period (1995 to 2025)Recent against earliestFitted trend
Last spring frost11 Mayn/a11 Mayn/a-3.4 days per decade
First autumn frost6 Octobern/a6 Octobern/a+5.9 days per decade
Growing days148 daysn/a148 daysn/a+9.3 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, 1994 to 2025

A day with at least 80.7 mm (3.2 in) of rain is expected about once in 2 years. A day with at least 185.5 mm (7.3 in) of rain is expected about once in 100 years.

Rainfall return levels at Durham: the daily rain expected about once in a given number of years
Expected about once inA day with at leastNote
2 years80.7 mm (3.2 in)
5 years109.8 mm (4.3 in)
10 years128.6 mm (5.1 in)
25 years151.9 mm (6.0 in)
50 years168.9 mm (6.6 in)Longer than the 31 years of record
100 years185.5 mm (7.3 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 1994 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: 149.4 mm (5.9 in) in 1998; 141.7 mm (5.6 in) in 2008; 138.4 mm (5.4 in) in 2012.

Download the Data

  • Data for Durham standing records by year: CSV or JSON. Field meanings are on the data page.
  • Data for Durham 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 2026-10-17 (17 October 2026). Records are computed by this site and are not official.

Data as of . Last revised (2026-10-17).