Built 2026-10-15 (15 October 2026)

Parsons Wtp Weather Records (USC00407015)

Record envelope, standing records and threshold days for Parsons Wtp (USC00407015), Tennessee, United States, with 59 years of record.

Key Facts for Parsons Wtp

  • Parsons Wtp (USC00407015) is a weather station in Tennessee, United States at 35.61 latitude and -88.12 longitude, 126 m (412 ft) above sea level.
  • The station reports from 1968 to 2026, 59 years of record.
  • 1,464 records set at Parsons Wtp still stand.
  • Records are tracked for prcp, snow, snwd: an element needs 30 years of data to be eligible.
  • Parsons Wtp set a daily record precipitation of 57.2 mm (2.3 in) on 22 July 2026.

About the Station

  • Location: Tennessee, United States, 35.61 latitude, -88.12 longitude.
  • Elevation: 126 m (412 ft).
  • Period of record: 1968 to 2026, 59 years.
  • Eligible elements: prcp, snow, snwd.

Daily Record Envelope and 2026

13 days at or beyond a record
Daily record high and record low at Parsons Wtp, with 2026 drawn through them The band shows the record high and record low for each calendar day at Parsons Wtp. The lines show the 2026 daily maximum and minimum. 13 days in 2026 matched or passed a record. Temperatures are in degrees Celsius. -200204060 JanFebMarAprMayJunJulAugSepOctNovDec
The band shows the record high and record low for each calendar day at Parsons Wtp. The lines show the 2026 daily maximum and minimum. 13 days in 2026 matched or passed a record. Temperatures are in degrees Celsius.
Daily record high and record low at Parsons Wtp, with 2026 drawn through them
MonthHighest record highLowest record low2026 highest maximum2026 lowest minimum
Jan23.9 C (75.0 F)-17.2 C (1.0 F)21.7 C (71.1 F)-15.0 C (5.0 F)
Feb27.8 C (82.0 F)-16.1 C (3.0 F)25.6 C (78.1 F)-10.0 C (14.0 F)
Mar31.1 C (88.0 F)-13.3 C (8.1 F)30.6 C (87.1 F)-4.4 C (24.1 F)
Apr33.3 C (91.9 F)-6.1 C (21.0 F)31.1 C (88.0 F)3.3 C (37.9 F)
May35.0 C (95.0 F)1.7 C (35.1 F)32.8 C (91.0 F)3.3 C (37.9 F)
Jun41.1 C (106.0 F)7.2 C (45.0 F)34.4 C (93.9 F)11.7 C (53.1 F)
Jul40.6 C (105.1 F)11.7 C (53.1 F)36.1 C (97.0 F)18.3 C (64.9 F)
Aug42.8 C (109.0 F)8.9 C (48.0 F)37.8 C (100.0 F)17.2 C (63.0 F)
Sep39.4 C (102.9 F)2.2 C (36.0 F)n/an/a
Oct36.1 C (97.0 F)-6.1 C (21.0 F)n/an/a
Nov31.1 C (88.0 F)-10.0 C (14.0 F)n/an/a
Dec25.6 C (78.1 F)-18.3 C (-0.9 F)n/an/a

Which Years Hold Standing Records

1,464 standing records
Standing records at Parsons Wtp by the year they were set 1,464 records at Parsons Wtp still stand. 2012 holds the most, with 76. 0204060801998: 671999: 632000: 742001: 632002: 572003: 322004: 552005: 402006: 612007: 752008: 432009: 492010: 642011: 672012: 762013: 402014: 572015: 432016: 492017: 502018: 502019: 362020: 362021: 422022: 492023: 382024: 242025: 362026: 281998200120042007201020132016201920222025
1,464 records at Parsons Wtp still stand. 2012 holds the most, with 76.
Standing records at Parsons Wtp by the year they were set
Year setStanding records
199867
199963
200074
200163
200257
200332
200455
200540
200661
200775
200843
200949
201064
201167
201276
201340
201457
201543
201649
201750
201850
201936
202036
202142
202249
202338
202424
202536
202628

Wettest Day of Each Month

May: 253.0 mm (10.0 in)
Record daily precipitation for each month at Parsons Wtp The wettest day on record for each calendar month at Parsons Wtp. The most was 253.0 mm (10.0 in) on 2 May 2010. 0100200300 Jan: 79.0 mm (3.1 in), 11 January 1974 Jan Feb: 97.8 mm (3.9 in), 23 February 2022 Feb Mar: 163.8 mm (6.4 in), 13 March 1975 Mar Apr: 129.8 mm (5.1 in), 22 April 2017 Apr May: 253.0 mm (10.0 in), 2 May 2010 May Jun: 88.4 mm (3.5 in), 19 June 2017 Jun Jul: 134.6 mm (5.3 in), 16 July 1972 Jul Aug: 69.9 mm (2.8 in), 30 August 2005 Aug Sep: 193.8 mm (7.6 in), 27 September 2002 Sep Oct: 180.3 mm (7.1 in), 23 October 2007 Oct Nov: 124.5 mm (4.9 in), 28 November 1968 Nov Dec: 99.6 mm (3.9 in), 10 December 2008 Dec
The wettest day on record for each calendar month at Parsons Wtp. The most was 253.0 mm (10.0 in) on 2 May 2010.
Record daily precipitation for each month at Parsons Wtp
MonthRecord daily precipitation (mm)Date
Jan79.0 mm (3.1 in)11 January 1974
Feb97.8 mm (3.9 in)23 February 2022
Mar163.8 mm (6.4 in)13 March 1975
Apr129.8 mm (5.1 in)22 April 2017
May253.0 mm (10.0 in)2 May 2010
Jun88.4 mm (3.5 in)19 June 2017
Jul134.6 mm (5.3 in)16 July 1972
Aug69.9 mm (2.8 in)30 August 2005
Sep193.8 mm (7.6 in)27 September 2002
Oct180.3 mm (7.1 in)23 October 2007
Nov124.5 mm (4.9 in)28 November 1968
Dec99.6 mm (3.9 in)10 December 2008

Period of Record Coverage

1998 to 2026
Days with data per year at Parsons Wtp 29 years of record at Parsons Wtp, 1998 to 2026. 5 years have data for under 90 percent of days and are left out of rankings: 2002, 2003, 2024, 2025, 2026. 1998: 363 of 365 days1999: 349 of 365 days2000: 360 of 366 days2001: 346 of 365 days2002: 328 of 365 days2003: 313 of 365 days2004: 353 of 366 days2005: 342 of 365 days2006: 358 of 365 days2007: 352 of 365 days2008: 358 of 366 days2009: 364 of 365 days2010: 357 of 365 days2011: 361 of 365 days2012: 363 of 366 days2013: 355 of 365 days2014: 352 of 365 days2015: 354 of 365 days2016: 362 of 366 days2017: 365 of 365 days2018: 364 of 365 days2019: 365 of 365 days2020: 366 of 366 days2021: 361 of 365 days2022: 359 of 365 days2023: 351 of 365 days2024: 233 of 366 days2025: 191 of 365 days2026: 177 of 365 days200020052010201520202025
29 years of record at Parsons Wtp, 1998 to 2026. 5 years have data for under 90 percent of days and are left out of rankings: 2002, 2003, 2024, 2025, 2026.
Days with data per year at Parsons Wtp
YearDays with dataShare of yearComplete
199836399%Yes
199934996%Yes
200036098%Yes
200134695%Yes
200232890%No
200331386%No
200435396%Yes
200534294%Yes
200635898%Yes
200735296%Yes
200835898%Yes
2009364100%Yes
201035798%Yes
201136199%Yes
201236399%Yes
201335597%Yes
201435296%Yes
201535497%Yes
201636299%Yes
2017365100%Yes
2018364100%Yes
2019365100%Yes
2020366100%Yes
202136199%Yes
202235998%Yes
202335196%Yes
202423364%No
202519152%No
202617748%No

Latest Records

20
Latest records at Parsons Wtp
DateStationRecordValueBeat old record byOld record stoodSignificance
22 July 2026Parsons Wtp, USdaily rain57.2 mm (2.3 in)3.9 mm (0.15 in)3 years7 of 100 (Routine)
22 June 2026Parsons Wtp, USdaily rain37.3 mm (1.5 in)4.8 mm (0.19 in)48 years22 of 100 (Routine)
29 May 2026Parsons Wtp, USdaily rain28.7 mm (1.1 in)2.5 mm (0.10 in)49 years20 of 100 (Routine)
19 February 2026Parsons Wtp, USdaily rain40.1 mm (1.6 in)20.8 mm (0.8 in)4 years19 of 100 (Routine)
20 October 2025Parsons Wtp, USdaily rain63.5 mm (2.5 in)31.0 mm (1.2 in)48 years35 of 100 (Notable)
23 September 2025Parsons Wtp, USdaily rain45.7 mm (1.8 in)24.1 mm (0.9 in)52 years30 of 100 (Routine)
17 June 2025Parsons Wtp, USdaily rain52.1 mm (2.1 in)28.5 mm (1.1 in)14 years29 of 100 (Routine)
20 May 2025Parsons Wtp, USdaily rain27.4 mm (1.1 in)15.2 mm (0.6 in)52 years27 of 100 (Routine)
19 May 2025Parsons Wtp, USdaily rain17.5 mm (0.7 in)4.8 mm (0.19 in)10 years10 of 100 (Routine)
6 April 2025Parsons Wtp, USdaily rain54.6 mm (2.1 in)3.8 mm (0.15 in)2 years7 of 100 (Routine)
5 April 2025Parsons Wtp, USdaily rain53.3 mm (2.1 in)12.2 mm (0.5 in)56 years27 of 100 (Routine)
4 April 2025Parsons Wtp, USdaily rain66.5 mm (2.6 in)6.8 mm (0.27 in)16 years13 of 100 (Routine)
3 April 2025Parsons Wtp, USdaily rain99.3 mm (3.9 in)76.4 mm (3.0 in)19 years50 of 100 (Notable)
16 March 2025Parsons Wtp, USdaily rain65.5 mm (2.6 in)19.3 mm (0.8 in)52 years31 of 100 (Routine)
31 January 2025Parsons Wtp, USdaily rain27.4 mm (1.1 in)11.7 mm (0.5 in)4 years14 of 100 (Routine)
10 January 2025Parsons Wtp, USdaily snowfall15.2 cm (6.0 in)5.0 cm (2.0 in)14 years19 of 100 (Routine)
10 January 2025Parsons Wtp, USdaily snow depth15.2 cm (6.0 in)5.0 cm (2.0 in)14 years19 of 100 (Routine)
27 December 2024Parsons Wtp, USdaily rain (Tie)17.8 mm (0.7 in)tie56 years5 of 100 (Routine)
10 November 2024Parsons Wtp, USdaily rain30.5 mm (1.2 in)4.6 mm (0.18 in)49 years21 of 100 (Routine)
6 November 2024Parsons Wtp, USdaily rain63.5 mm (2.5 in)22.4 mm (0.9 in)6 years18 of 100 (Routine)

Climate Trend

23 complete years, 1998 to 2023
Annual mean temperature at Parsons Wtp as warming stripes, 1998 to 2023 One stripe for each of 23 complete years at Parsons Wtp, 1998 to 2023. Blue stripes are years cooler than the station's own mean of 15.8 C (60.4 F); red stripes are warmer. The coolest year was 2013, at 14.9 C (58.9 F), and the warmest was 2007, at 16.5 C (61.7 F). The strongest colour marks a difference of 0.9 C (1.6 F). 1998: 16.5 C, +0.8 C from the station mean1999: 15.9 C, +0.2 C from the station mean2000: 15.3 C, -0.5 C from the station mean2001: 15.3 C, -0.4 C from the station mean2004: 15.8 C, 0.0 C from the station mean2005: 15.8 C, 0.0 C from the station mean2006: 15.6 C, -0.1 C from the station mean2007: 16.5 C, +0.8 C from the station mean2008: 15.0 C, -0.8 C from the station mean2009: 15.1 C, -0.7 C from the station mean2010: 15.4 C, -0.4 C from the station mean2011: 15.7 C, 0.0 C from the station mean2012: 16.4 C, +0.6 C from the station mean2013: 14.9 C, -0.8 C from the station mean2015: 15.5 C, -0.3 C from the station mean2016: 16.3 C, +0.6 C from the station mean2017: 16.3 C, +0.6 C from the station mean2018: 15.7 C, -0.1 C from the station mean2019: 16.0 C, +0.3 C from the station mean2020: 15.8 C, +0.1 C from the station mean2021: 15.7 C, -0.1 C from the station mean2022: 15.4 C, -0.4 C from the station mean2023: 16.4 C, +0.6 C from the station mean199820002005201020152020
One stripe for each of 23 complete years at Parsons Wtp, 1998 to 2023. Blue stripes are years cooler than the station's own mean of 15.8 C (60.4 F); red stripes are warmer. The coolest year was 2013, at 14.9 C (58.9 F), and the warmest was 2007, at 16.5 C (61.7 F). The strongest colour marks a difference of 0.9 C (1.6 F).
Annual mean temperature at Parsons Wtp as warming stripes, 1998 to 2023
YearAnnual mean temperatureDifference from the station mean
199816.5 C+0.76 C
199915.9 C+0.18 C
200015.3 C-0.46 C
200115.3 C-0.41 C
200415.8 C+0.01 C
200515.8 C+0.01 C
200615.6 C-0.11 C
200716.5 C+0.77 C
200815.0 C-0.79 C
200915.1 C-0.67 C
201015.4 C-0.40 C
201115.7 C-0.01 C
201216.4 C+0.62 C
201314.9 C-0.81 C
201515.5 C-0.27 C
201616.3 C+0.59 C
201716.3 C+0.56 C
201815.7 C-0.09 C
201916.0 C+0.28 C
202015.8 C+0.08 C
202115.7 C-0.05 C
202215.4 C-0.38 C
202316.4 C+0.60 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

1968 to 2026
Yearly extremes at Parsons Wtp: the record and the median year
MeasureRecordYear of the recordMedian yearYears with a value
Hottest day (TXx)42.8 C (109.0 F)200736.7 C (98.1 F)29
Coldest night (TNn)-18.3 C (-0.9 F)2022-13.9 C (7.0 F)29
Wettest day (Rx1day)253.0 mm (10.0 in)201097.4 mm (3.8 in)40
Wettest five days (Rx5day)333.5 mm (13.1 in)2010139.2 mm (5.5 in)40
Longest dry spell (CDD)37 days199820 days40

Hottest day (TXx)

Hottest day (TXx) at Parsons Wtp by year The hottest day of the year at Parsons Wtp, 1968 to 2026. The record is 42.8 C (109.0 F) in 2007, marked on the chart; the median year is 36.7 C (98.1 F). 343638404244197019801990200020102020Record: 42.8 C (109.0 F) in 2007
The hottest day of the year at Parsons Wtp, 1968 to 2026. The record is 42.8 C (109.0 F) in 2007, marked on the chart; the median year is 36.7 C (98.1 F).
Hottest day (TXx) at Parsons Wtp by year
YearHottest day (TXx)
1968n/a
1969n/a
1970n/a
1971n/a
1972n/a
1973n/a
1974n/a
1975n/a
1976n/a
1977n/a
1978n/a
199837.2 C (99.0 F)
199940.0 C (104.0 F)
200040.0 C (104.0 F)
200135.6 C (96.1 F)
200236.1 C (97.0 F)
200335.6 C (96.1 F)
200436.1 C (97.0 F)
200536.7 C (98.1 F)
200637.8 C (100.0 F)
200742.8 C (109.0 F)
200837.2 C (99.0 F)
200936.1 C (97.0 F)
201039.4 C (102.9 F)
201138.9 C (102.0 F)
201241.1 C (106.0 F)
201335.6 C (96.1 F)
201436.1 C (97.0 F)
201536.1 C (97.0 F)
201637.8 C (100.0 F)
201736.1 C (97.0 F)
201836.7 C (98.1 F)
201937.2 C (99.0 F)
202035.6 C (96.1 F)
202135.6 C (96.1 F)
202237.8 C (100.0 F)
202336.7 C (98.1 F)
202437.8 C (100.0 F)
202536.7 C (98.1 F)
202637.8 C (100.0 F)

Coldest night (TNn)

Coldest night (TNn) at Parsons Wtp by year The coldest night of the year at Parsons Wtp, 1968 to 2026. The record is -18.3 C (-0.9 F) in 2022, marked on the chart; the median year is -13.9 C (7.0 F). -20-15-10-5197019801990200020102020Record: -18.3 C (-0.9 F) in 2022
The coldest night of the year at Parsons Wtp, 1968 to 2026. The record is -18.3 C (-0.9 F) in 2022, marked on the chart; the median year is -13.9 C (7.0 F).
Coldest night (TNn) at Parsons Wtp by year
YearColdest night (TNn)
1968n/a
1969n/a
1970n/a
1971n/a
1972n/a
1973n/a
1974n/a
1975n/a
1976n/a
1977n/a
1978n/a
1998-11.1 C (12.0 F)
1999-13.9 C (7.0 F)
2000-13.9 C (7.0 F)
2001-16.1 C (3.0 F)
2002-10.6 C (12.9 F)
2003-17.2 C (1.0 F)
2004-11.7 C (10.9 F)
2005-10.6 C (12.9 F)
2006-12.2 C (10.0 F)
2007-11.7 C (10.9 F)
2008-12.8 C (9.0 F)
2009-14.4 C (6.1 F)
2010-14.4 C (6.1 F)
2011-14.4 C (6.1 F)
2012-9.4 C (15.1 F)
2013-9.4 C (15.1 F)
2014-16.7 C (1.9 F)
2015-15.0 C (5.0 F)
2016-10.6 C (12.9 F)
2017-15.0 C (5.0 F)
2018-15.0 C (5.0 F)
2019-10.0 C (14.0 F)
2020-8.3 C (17.1 F)
2021-13.9 C (7.0 F)
2022-18.3 C (-0.9 F)
2023-7.2 C (19.0 F)
2024-12.8 C (9.0 F)
2025-16.1 C (3.0 F)
2026-15.0 C (5.0 F)

Wettest day (Rx1day)

Wettest day (Rx1day) at Parsons Wtp by year The wettest day of the year at Parsons Wtp, 1968 to 2026. The record is 253.0 mm (10.0 in) in 2010, marked on the chart; the median year is 97.4 mm (3.8 in). 0100200300197019801990200020102020Record: 253.0 mm (10.0 in) in 2010
The wettest day of the year at Parsons Wtp, 1968 to 2026. The record is 253.0 mm (10.0 in) in 2010, marked on the chart; the median year is 97.4 mm (3.8 in).
Wettest day (Rx1day) at Parsons Wtp by year
YearWettest day (Rx1day)
1968124.5 mm (4.9 in)
196994.2 mm (3.7 in)
1970141.0 mm (5.6 in)
1971105.4 mm (4.1 in)
1972134.6 mm (5.3 in)
1973101.9 mm (4.0 in)
197479.0 mm (3.1 in)
1975163.8 mm (6.4 in)
197644.7 mm (1.8 in)
197797.0 mm (3.8 in)
197845.0 mm (1.8 in)
199881.5 mm (3.2 in)
199976.2 mm (3.0 in)
200041.7 mm (1.6 in)
2001115.6 mm (4.6 in)
2002193.8 mm (7.6 in)
200393.5 mm (3.7 in)
200498.3 mm (3.9 in)
2005112.3 mm (4.4 in)
200669.6 mm (2.7 in)
2007180.3 mm (7.1 in)
2008104.4 mm (4.1 in)
200973.7 mm (2.9 in)
2010253.0 mm (10.0 in)
201158.4 mm (2.3 in)
201277.0 mm (3.0 in)
201371.6 mm (2.8 in)
201471.1 mm (2.8 in)
201563.5 mm (2.5 in)
201653.6 mm (2.1 in)
2017165.6 mm (6.5 in)
2018114.3 mm (4.5 in)
201983.3 mm (3.3 in)
2020127.0 mm (5.0 in)
2021104.1 mm (4.1 in)
202297.8 mm (3.9 in)
2023118.9 mm (4.7 in)
202463.5 mm (2.5 in)
202599.3 mm (3.9 in)
202657.2 mm (2.3 in)

Wettest five days (Rx5day)

Wettest five days (Rx5day) at Parsons Wtp by year The wettest five days of the year at Parsons Wtp, 1968 to 2026. The record is 333.5 mm (13.1 in) in 2010, marked on the chart; the median year is 139.2 mm (5.5 in). 0100200300400197019801990200020102020Record: 333.5 mm (13.1 in) in 2010
The wettest five days of the year at Parsons Wtp, 1968 to 2026. The record is 333.5 mm (13.1 in) in 2010, marked on the chart; the median year is 139.2 mm (5.5 in).
Wettest five days (Rx5day) at Parsons Wtp by year
YearWettest five days (Rx5day)
1968198.2 mm (7.8 in)
1969141.0 mm (5.6 in)
1970162.9 mm (6.4 in)
1971129.3 mm (5.1 in)
1972159.8 mm (6.3 in)
1973156.2 mm (6.1 in)
1974137.3 mm (5.4 in)
1975289.3 mm (11.4 in)
197672.9 mm (2.9 in)
1977149.9 mm (5.9 in)
197869.9 mm (2.8 in)
199895.7 mm (3.8 in)
199976.7 mm (3.0 in)
200079.6 mm (3.1 in)
2001255.6 mm (10.1 in)
2002212.6 mm (8.4 in)
2003154.4 mm (6.1 in)
2004141.2 mm (5.6 in)
2005113.4 mm (4.5 in)
2006116.8 mm (4.6 in)
2007224.5 mm (8.8 in)
2008131.9 mm (5.2 in)
2009123.7 mm (4.9 in)
2010333.5 mm (13.1 in)
201193.9 mm (3.7 in)
2012101.1 mm (4.0 in)
2013125.4 mm (4.9 in)
2014111.3 mm (4.4 in)
2015121.8 mm (4.8 in)
2016104.3 mm (4.1 in)
2017200.6 mm (7.9 in)
2018148.6 mm (5.9 in)
2019163.3 mm (6.4 in)
2020162.3 mm (6.4 in)
2021134.6 mm (5.3 in)
2022192.6 mm (7.6 in)
2023174.0 mm (6.9 in)
2024130.6 mm (5.1 in)
2025279.0 mm (11.0 in)
202676.3 mm (3.0 in)

Longest dry spell (CDD)

Longest dry spell (CDD) at Parsons Wtp by year The longest dry spell of the year at Parsons Wtp, 1968 to 2026. The record is 37 days in 1998, marked on the chart; the median year is 20 days. 10203040197019801990200020102020Record: 37 days in 1998
The longest dry spell of the year at Parsons Wtp, 1968 to 2026. The record is 37 days in 1998, marked on the chart; the median year is 20 days.
Longest dry spell (CDD) at Parsons Wtp by year
YearLongest dry spell (CDD)
196815 days
196920 days
197011 days
197123 days
197211 days
197322 days
197418 days
197512 days
197613 days
197720 days
197818 days
199837 days
199926 days
200028 days
200116 days
200222 days
200317 days
200424 days
200519 days
200617 days
200727 days
200822 days
200918 days
201031 days
201125 days
201224 days
201319 days
201419 days
201520 days
201634 days
201726 days
201822 days
201927 days
202016 days
202117 days
202217 days
202324 days
202426 days
202517 days
202616 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

23 years with a frost

Across 23 years with a frost, the median last spring frost at Parsons Wtp falls on 8 April and the median first autumn frost on 25 October, which leaves a median of 201 days between them.

Frost dates and growing season at Parsons Wtp
MeasureMedian, all yearsEarliest periodRecent period (1998 to 2023)Recent against earliestFitted trend
Last spring frost8 Apriln/a8 Apriln/an/a
First autumn frost25 Octobern/a25 Octobern/an/a
Growing days201 daysn/a201 daysn/an/a

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

34 years, 1969 to 2023

A day with at least 95.0 mm (3.7 in) of rain is expected about once in 2 years. A day with at least 269.0 mm (10.6 in) of rain is expected about once in 100 years.

Rainfall return levels at Parsons Wtp: the daily rain expected about once in a given number of years
Expected about once inA day with at leastNote
2 years95.0 mm (3.7 in)
5 years134.5 mm (5.3 in)
10 years163.3 mm (6.4 in)
25 years203.0 mm (8.0 in)
50 years234.9 mm (9.2 in)Longer than the 34 years of record
100 years269.0 mm (10.6 in)Longer than the 34 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, 34 years of values from 1969 to 2023.

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: 253.0 mm (10.0 in) in 2010; 193.8 mm (7.6 in) in 2002; 180.3 mm (7.1 in) in 2007.

Download the Data

  • Data for Parsons Wtp standing records by year: CSV or JSON. Field meanings are on the data page.
  • Data for Parsons Wtp 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 (2026-10-12).