Built 2026-10-15 (15 October 2026)

Gray Weather Records (USC00173295)

Record envelope, standing records and threshold days for Gray (USC00173295), Maine, United States, with 32 years of record.

Key Facts for Gray

  • Gray (USC00173295) is a weather station in Maine, United States at 43.89 latitude and -70.25 longitude, 115 m (378 ft) above sea level.
  • The station reports from 1995 to 2026, 32 years of record.
  • 1,464 records set at Gray still stand.
  • Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
  • Gray set a daily record high maximum temperature of 26.7 C (80.1 F) on 2 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, 43.89 latitude, -70.25 longitude.
  • Elevation: 115 m (378 ft).
  • Period of record: 1995 to 2026, 32 years.
  • Eligible elements: tmax, tmin, prcp, snow, snwd.

Daily Record Envelope and 2026

13 days at or beyond a record
Daily record high and record low at Gray, with 2026 drawn through them The band shows the record high and record low for each calendar day at Gray. The lines show the 2026 daily maximum and minimum. 13 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 Gray. 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 Gray, with 2026 drawn through them
MonthHighest record highLowest record low2026 highest maximum2026 lowest minimum
Jan18.9 C (66.0 F)-26.1 C (-15.0 F)7.8 C (46.0 F)-20.6 C (-5.1 F)
Feb17.2 C (63.0 F)-27.2 C (-17.0 F)7.8 C (46.0 F)-17.8 C (0.0 F)
Mar30.0 C (86.0 F)-20.0 C (-4.0 F)22.2 C (72.0 F)-16.1 C (3.0 F)
Apr32.8 C (91.0 F)-9.4 C (15.1 F)21.1 C (70.0 F)-5.0 C (23.0 F)
May35.0 C (95.0 F)-0.6 C (30.9 F)33.3 C (91.9 F)2.8 C (37.0 F)
Jun37.2 C (99.0 F)2.8 C (37.0 F)29.4 C (84.9 F)7.2 C (45.0 F)
Jul37.2 C (99.0 F)8.3 C (46.9 F)34.4 C (93.9 F)11.7 C (53.1 F)
Aug35.6 C (96.1 F)7.8 C (46.0 F)32.2 C (90.0 F)11.7 C (53.1 F)
Sep35.6 C (96.1 F)-0.6 C (30.9 F)28.9 C (84.0 F)5.6 C (42.1 F)
Oct28.9 C (84.0 F)-4.4 C (24.1 F)26.7 C (80.1 F)3.3 C (37.9 F)
Nov24.4 C (75.9 F)-16.1 C (3.0 F)n/an/a
Dec20.6 C (69.1 F)-23.3 C (-9.9 F)n/an/a

Which Years Hold Standing Records

1,464 standing records
Standing records at Gray by the year they were set 1,464 records at Gray still stand. 2002 holds the most, with 74. 0204060801995: 111996: 641997: 521998: 361999: 492000: 662001: 522002: 742003: 602004: 392005: 482006: 412007: 652008: 422009: 442010: 482011: 452012: 382013: 522014: 412015: 562016: 462017: 652018: 412019: 312020: 442021: 442022: 422023: 402024: 302025: 362026: 2219951999200320072011201520192023
1,464 records at Gray still stand. 2002 holds the most, with 74.
Standing records at Gray by the year they were set
Year setStanding records
199511
199664
199752
199836
199949
200066
200152
200274
200360
200439
200548
200641
200765
200842
200944
201048
201145
201238
201352
201441
201556
201646
201765
201841
201931
202044
202144
202242
202340
202430
202536
202622

Wettest Day of Each Month

Oct: 165.1 mm (6.5 in)
Record daily precipitation for each month at Gray The wettest day on record for each calendar month at Gray. The most was 165.1 mm (6.5 in) on 10 October 1998. 050100150200 Jan: 65.3 mm (2.6 in), 10 January 2016 Jan Feb: 89.7 mm (3.5 in), 25 February 2010 Feb Mar: 80.5 mm (3.2 in), 10 March 2024 Mar Apr: 98.8 mm (3.9 in), 16 April 1996 Apr May: 54.1 mm (2.1 in), 20 May 2023 May Jun: 107.4 mm (4.2 in), 13 June 1998 Jun Jul: 114.6 mm (4.5 in), 13 July 1996 Jul Aug: 124.7 mm (4.9 in), 13 August 2014 Aug Sep: 139.7 mm (5.5 in), 30 September 2015 Sep Oct: 165.1 mm (6.5 in), 10 October 1998 Oct Nov: 106.7 mm (4.2 in), 14 November 2009 Nov Dec: 81.0 mm (3.2 in), 14 December 2019 Dec
The wettest day on record for each calendar month at Gray. The most was 165.1 mm (6.5 in) on 10 October 1998.
Record daily precipitation for each month at Gray
MonthRecord daily precipitation (mm)Date
Jan65.3 mm (2.6 in)10 January 2016
Feb89.7 mm (3.5 in)25 February 2010
Mar80.5 mm (3.2 in)10 March 2024
Apr98.8 mm (3.9 in)16 April 1996
May54.1 mm (2.1 in)20 May 2023
Jun107.4 mm (4.2 in)13 June 1998
Jul114.6 mm (4.5 in)13 July 1996
Aug124.7 mm (4.9 in)13 August 2014
Sep139.7 mm (5.5 in)30 September 2015
Oct165.1 mm (6.5 in)10 October 1998
Nov106.7 mm (4.2 in)14 November 2009
Dec81.0 mm (3.2 in)14 December 2019

Period of Record Coverage

1995 to 2026
Days with data per year at Gray 32 years of record at Gray, 1995 to 2026. 2 years have data for under 90 percent of days and are left out of rankings: 1995, 2026. 1995: 92 of 365 days1996: 366 of 366 days1997: 365 of 365 days1998: 365 of 365 days1999: 365 of 365 days2000: 366 of 366 days2001: 365 of 365 days2002: 365 of 365 days2003: 365 of 365 days2004: 366 of 366 days2005: 365 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: 364 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: 364 of 365 days2026: 284 of 365 days1995200020052010201520202025
32 years of record at Gray, 1995 to 2026. 2 years have data for under 90 percent of days and are left out of rankings: 1995, 2026.
Days with data per year at Gray
YearDays with dataShare of yearComplete
19959225%No
1996366100%Yes
1997365100%Yes
1998365100%Yes
1999365100%Yes
2000366100%Yes
2001365100%Yes
2002365100%Yes
2003365100%Yes
2004366100%Yes
2005365100%Yes
2006365100%Yes
2007365100%Yes
2008366100%Yes
2009365100%Yes
2010365100%Yes
2011365100%Yes
2012366100%Yes
2013365100%Yes
2014365100%Yes
2015365100%Yes
2016366100%Yes
2017365100%Yes
2018364100%Yes
2019365100%Yes
2020366100%Yes
2021365100%Yes
2022365100%Yes
2023365100%Yes
2024366100%Yes
2025364100%Yes
202628478%No

Latest Records

20
Latest records at Gray
DateStationRecordValueBeat old record byOld record stoodSignificance
2 October 2026Gray, USdaily high max (Provisional)26.7 C (80.1 F)0.6 C (1.1 F)24 years11 of 100 (Routine)
28 September 2026Gray, USdaily rain (Provisional)26.4 mm (1.0 in)1.3 mm (0.05 in)17 years8 of 100 (Routine)
20 September 2026Gray, USdaily low max (Provisional)12.8 C (55.0 F)1.6 C (2.9 F)4 years7 of 100 (Routine)
3 August 2026Gray, USdaily rain (Tie)33.5 mm (1.3 in)tie1 year0 of 100 (Routine)
2 July 2026Gray, USdaily high max34.4 C (93.9 F)3.3 C (5.9 F)12 years15 of 100 (Routine)
2 July 2026Gray, USdaily high min22.2 C (72.0 F)1.1 C (2.0 F)0 years7 of 100 (Routine)
1 July 2026Gray, USdaily high max (Tie)31.1 C (88.0 F)tie28 years2 of 100 (Routine)
23 June 2026Gray, USdaily rain25.4 mm (1.0 in)6.1 mm (0.24 in)11 years10 of 100 (Routine)
14 June 2026Gray, USdaily high min17.2 C (63.0 F)0.5 C (0.9 F)27 years12 of 100 (Routine)
11 June 2026Gray, USdaily high min17.2 C (63.0 F)1.1 C (2.0 F)20 years12 of 100 (Routine)
10 June 2026Gray, USdaily high min (Tie)16.7 C (62.1 F)tie28 years2 of 100 (Routine)
4 June 2026Gray, USdaily high max29.4 C (84.9 F)0.5 C (0.9 F)20 years9 of 100 (Routine)
30 May 2026Gray, USdaily low min3.9 C (39.0 F)0.5 C (0.9 F)12 years7 of 100 (Routine)
20 May 2026Gray, USdaily high min17.8 C (64.0 F)6.1 C (11.0 F)15 years25 of 100 (Routine)
20 May 2026Gray, USdaily high max31.1 C (88.0 F)2.2 C (4.0 F)23 years12 of 100 (Routine)
19 May 2026Gray, USdaily high max33.3 C (91.9 F)5.5 C (9.9 F)8 years14 of 100 (Routine)
17 May 2026Gray, USdaily high min14.4 C (57.9 F)2.7 C (4.9 F)8 years13 of 100 (Routine)
17 May 2026Gray, USdaily high max27.8 C (82.0 F)1.7 C (3.1 F)8 years8 of 100 (Routine)
16 May 2026Gray, USdaily high max (Tie)25.0 C (77.0 F)tie12 years1 of 100 (Routine)
15 May 2026Gray, USdaily rain34.3 mm (1.4 in)3.1 mm (0.12 in)15 years10 of 100 (Routine)

Climate Trend

30 complete years, 1996 to 2025
Annual mean temperature at Gray as warming stripes, 1996 to 2025 One stripe for each of 30 complete years at Gray, 1996 to 2025. Blue stripes are years cooler than the station's own mean of 8.3 C (46.9 F); red stripes are warmer. The coolest year was 1997, at 7.3 C (45.1 F), and the warmest was 2010, at 9.4 C (48.9 F). The strongest colour marks a difference of 1.2 C (2.2 F). 1996: 7.4 C, -0.9 C from the station mean1997: 7.3 C, -1.0 C from the station mean1998: 9.0 C, +0.7 C from the station mean1999: 9.0 C, +0.8 C from the station mean2000: 7.5 C, -0.8 C from the station mean2001: 8.6 C, +0.4 C from the station mean2002: 8.4 C, +0.2 C from the station mean2003: 7.3 C, -0.9 C from the station mean2004: 7.4 C, -0.9 C from the station mean2005: 7.9 C, -0.3 C from the station mean2006: 9.1 C, +0.8 C from the station mean2007: 7.7 C, -0.6 C from the station mean2008: 8.0 C, -0.2 C from the station mean2009: 7.6 C, -0.7 C from the station mean2010: 9.4 C, +1.1 C from the station mean2011: 8.5 C, +0.3 C from the station mean2012: 9.0 C, +0.7 C from the station mean2013: 8.0 C, -0.3 C from the station mean2014: 7.4 C, -0.9 C from the station mean2015: 7.7 C, -0.6 C from the station mean2016: 8.8 C, +0.6 C from the station mean2017: 8.5 C, +0.2 C from the station mean2018: 7.9 C, -0.4 C from the station mean2019: 7.5 C, -0.7 C from the station mean2020: 8.7 C, +0.5 C from the station mean2021: 9.1 C, +0.9 C from the station mean2022: 8.8 C, +0.5 C from the station mean2023: 9.0 C, +0.7 C from the station mean2024: 9.2 C, +1.0 C from the station mean2025: 8.0 C, -0.2 C from the station mean1996200020052010201520202025
One stripe for each of 30 complete years at Gray, 1996 to 2025. Blue stripes are years cooler than the station's own mean of 8.3 C (46.9 F); red stripes are warmer. The coolest year was 1997, at 7.3 C (45.1 F), and the warmest was 2010, at 9.4 C (48.9 F). The strongest colour marks a difference of 1.2 C (2.2 F).
Annual mean temperature at Gray as warming stripes, 1996 to 2025
YearAnnual mean temperatureDifference from the station mean
19967.4 C-0.86 C
19977.3 C-0.98 C
19989.0 C+0.69 C
19999.0 C+0.77 C
20007.5 C-0.76 C
20018.6 C+0.36 C
20028.4 C+0.15 C
20037.3 C-0.94 C
20047.4 C-0.87 C
20057.9 C-0.35 C
20069.1 C+0.80 C
20077.7 C-0.56 C
20088.0 C-0.25 C
20097.6 C-0.69 C
20109.4 C+1.13 C
20118.5 C+0.27 C
20129.0 C+0.72 C
20138.0 C-0.30 C
20147.4 C-0.89 C
20157.7 C-0.57 C
20168.8 C+0.57 C
20178.5 C+0.19 C
20187.9 C-0.37 C
20197.5 C-0.74 C
20208.7 C+0.48 C
20219.1 C+0.86 C
20228.8 C+0.53 C
20239.0 C+0.74 C
20249.2 C+0.95 C
20258.0 C-0.22 C

The fitted trend in annual mean temperature here over 1996 to 2025 is 0.24 C (-0.04 to 0.53) per decade. The interval includes zero, so the trend is not clearly different from zero. In Fahrenheit: 0.4 F (-0.1 to 1.0) per decade. The slope is a straight line fitted to 30 complete years; the brackets give its 95 percent interval.

Fitted temperature trends per decade at Gray
MeasurePer decade (C)Per decade (F)PeriodComplete yearsReading
Annual mean temperature0.24 C (-0.04 to 0.53) per decade0.4 F (-0.1 to 1.0) per decade1996 to 202530Not clearly different from zero
Mean daily maximum0.1 C (-0.2 to 0.4) per decade0.2 F (-0.3 to 0.8) per decade1996 to 202530Not clearly different from zero
Mean daily minimum0.3 C (0.1 to 0.6) per decade0.6 F (0.1 to 1.2) per decade1996 to 202530Rise

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

1995 to 2026
Yearly extremes at Gray: the record and the median year
MeasureRecordYear of the recordMedian yearYears with a value
Hottest day (TXx)37.2 C (99.0 F)201133.9 C (93.0 F)32
Coldest night (TNn)-27.2 C (-17.0 F)2023-21.4 C (-6.5 F)32
Wettest day (Rx1day)165.1 mm (6.5 in)199878.2 mm (3.1 in)32
Wettest five days (Rx5day)236.9 mm (9.3 in)1998114.9 mm (4.5 in)32
Longest dry spell (CDD)27 days201716 days32

Hottest day (TXx)

Hottest day (TXx) at Gray by year The hottest day of the year at Gray, 1995 to 2026. The record is 37.2 C (99.0 F) in 2011, marked on the chart; the median year is 33.9 C (93.0 F). 25303540200020102020Record: 37.2 C (99.0 F) in 2011
The hottest day of the year at Gray, 1995 to 2026. The record is 37.2 C (99.0 F) in 2011, marked on the chart; the median year is 33.9 C (93.0 F).
Hottest day (TXx) at Gray by year
YearHottest day (TXx)
199525.6 C (78.1 F)
199631.1 C (88.0 F)
199732.8 C (91.0 F)
199833.3 C (91.9 F)
199936.1 C (97.0 F)
200032.8 C (91.0 F)
200135.6 C (96.1 F)
200235.6 C (96.1 F)
200333.3 C (91.9 F)
200433.9 C (93.0 F)
200533.9 C (93.0 F)
200633.9 C (93.0 F)
200733.9 C (93.0 F)
200832.2 C (90.0 F)
200932.8 C (91.0 F)
201035.0 C (95.0 F)
201137.2 C (99.0 F)
201233.9 C (93.0 F)
201334.4 C (93.9 F)
201431.7 C (89.1 F)
201531.7 C (89.1 F)
201635.6 C (96.1 F)
201735.0 C (95.0 F)
201833.3 C (91.9 F)
201932.8 C (91.0 F)
202033.3 C (91.9 F)
202135.0 C (95.0 F)
202234.4 C (93.9 F)
202332.2 C (90.0 F)
202433.3 C (91.9 F)
202537.2 C (99.0 F)
202634.4 C (93.9 F)

Coldest night (TNn)

Coldest night (TNn) at Gray by year The coldest night of the year at Gray, 1995 to 2026. The record is -27.2 C (-17.0 F) in 2023, marked on the chart; the median year is -21.4 C (-6.5 F). -30-25-20-15200020102020Record: -27.2 C (-17.0 F) in 2023
The coldest night of the year at Gray, 1995 to 2026. The record is -27.2 C (-17.0 F) in 2023, marked on the chart; the median year is -21.4 C (-6.5 F).
Coldest night (TNn) at Gray by year
YearColdest night (TNn)
1995-17.2 C (1.0 F)
1996-22.8 C (-9.0 F)
1997-23.9 C (-11.0 F)
1998-21.1 C (-6.0 F)
1999-25.6 C (-14.1 F)
2000-21.1 C (-6.0 F)
2001-18.9 C (-2.0 F)
2002-17.8 C (0.0 F)
2003-23.9 C (-11.0 F)
2004-26.1 C (-15.0 F)
2005-23.3 C (-9.9 F)
2006-18.3 C (-0.9 F)
2007-20.6 C (-5.1 F)
2008-19.4 C (-2.9 F)
2009-22.8 C (-9.0 F)
2010-18.3 C (-0.9 F)
2011-23.9 C (-11.0 F)
2012-19.4 C (-2.9 F)
2013-21.7 C (-7.1 F)
2014-23.9 C (-11.0 F)
2015-25.0 C (-13.0 F)
2016-24.4 C (-11.9 F)
2017-23.3 C (-9.9 F)
2018-23.3 C (-9.9 F)
2019-19.4 C (-2.9 F)
2020-21.1 C (-6.0 F)
2021-16.7 C (1.9 F)
2022-22.8 C (-9.0 F)
2023-27.2 C (-17.0 F)
2024-15.0 C (5.0 F)
2025-20.6 C (-5.1 F)
2026-20.6 C (-5.1 F)

Wettest day (Rx1day)

Wettest day (Rx1day) at Gray by year The wettest day of the year at Gray, 1995 to 2026. The record is 165.1 mm (6.5 in) in 1998, marked on the chart; the median year is 78.2 mm (3.1 in). 050100150200200020102020Record: 165.1 mm (6.5 in) in 1998
The wettest day of the year at Gray, 1995 to 2026. The record is 165.1 mm (6.5 in) in 1998, marked on the chart; the median year is 78.2 mm (3.1 in).
Wettest day (Rx1day) at Gray by year
YearWettest day (Rx1day)
199541.7 mm (1.6 in)
1996155.2 mm (6.1 in)
199767.1 mm (2.6 in)
1998165.1 mm (6.5 in)
1999139.4 mm (5.5 in)
200057.7 mm (2.3 in)
200169.9 mm (2.8 in)
200239.9 mm (1.6 in)
200347.2 mm (1.9 in)
200452.3 mm (2.1 in)
2005128.8 mm (5.1 in)
200675.9 mm (3.0 in)
200788.4 mm (3.5 in)
2008130.3 mm (5.1 in)
2009106.7 mm (4.2 in)
201089.7 mm (3.5 in)
201156.9 mm (2.2 in)
201289.4 mm (3.5 in)
201373.2 mm (2.9 in)
2014124.7 mm (4.9 in)
2015139.7 mm (5.5 in)
201694.7 mm (3.7 in)
201743.4 mm (1.7 in)
201855.6 mm (2.2 in)
201981.0 mm (3.2 in)
202095.8 mm (3.8 in)
202172.1 mm (2.8 in)
202274.7 mm (2.9 in)
202392.2 mm (3.6 in)
202480.5 mm (3.2 in)
202565.3 mm (2.6 in)
202635.1 mm (1.4 in)

Wettest five days (Rx5day)

Wettest five days (Rx5day) at Gray by year The wettest five days of the year at Gray, 1995 to 2026. The record is 236.9 mm (9.3 in) in 1998, marked on the chart; the median year is 114.9 mm (4.5 in). 50100150200250200020102020Record: 236.9 mm (9.3 in) in 1998
The wettest five days of the year at Gray, 1995 to 2026. The record is 236.9 mm (9.3 in) in 1998, marked on the chart; the median year is 114.9 mm (4.5 in).
Wettest five days (Rx5day) at Gray by year
YearWettest five days (Rx5day)
199579.6 mm (3.1 in)
1996184.9 mm (7.3 in)
199777.0 mm (3.0 in)
1998236.9 mm (9.3 in)
1999161.7 mm (6.4 in)
200082.8 mm (3.3 in)
200193.3 mm (3.7 in)
200270.8 mm (2.8 in)
200379.2 mm (3.1 in)
200485.2 mm (3.4 in)
2005217.2 mm (8.6 in)
200699.0 mm (3.9 in)
2007127.5 mm (5.0 in)
2008183.1 mm (7.2 in)
2009117.7 mm (4.6 in)
2010134.1 mm (5.3 in)
201195.5 mm (3.8 in)
2012171.4 mm (6.7 in)
201391.7 mm (3.6 in)
2014134.6 mm (5.3 in)
2015161.3 mm (6.4 in)
2016125.0 mm (4.9 in)
2017120.7 mm (4.8 in)
201883.1 mm (3.3 in)
201988.1 mm (3.5 in)
2020143.8 mm (5.7 in)
202191.4 mm (3.6 in)
2022112.0 mm (4.4 in)
2023121.7 mm (4.8 in)
2024128.2 mm (5.0 in)
202576.6 mm (3.0 in)
202660.3 mm (2.4 in)

Longest dry spell (CDD)

Longest dry spell (CDD) at Gray by year The longest dry spell of the year at Gray, 1995 to 2026. The record is 27 days in 2017, marked on the chart; the median year is 16 days. 51015202530200020102020Record: 27 days in 2017
The longest dry spell of the year at Gray, 1995 to 2026. The record is 27 days in 2017, marked on the chart; the median year is 16 days.
Longest dry spell (CDD) at Gray by year
YearLongest dry spell (CDD)
19959 days
199619 days
199717 days
199813 days
199915 days
200014 days
200122 days
200214 days
200315 days
200415 days
200515 days
200617 days
200714 days
200817 days
200914 days
201018 days
201112 days
201219 days
201316 days
201417 days
201512 days
201615 days
201727 days
201814 days
201914 days
202021 days
202120 days
202215 days
202317 days
202424 days
202517 days
202618 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

30 years with a frost

Across 30 years with a frost, the median last spring frost at Gray falls on 24 April and the median first autumn frost on 20 October, which leaves a median of 180 days between them.

Fitted over all years, the growing season changes by +9.7 days per decade at this station.

Frost dates and growing season at Gray
MeasureMedian, all yearsEarliest periodRecent period (1996 to 2025)Recent against earliestFitted trend
Last spring frost24 Apriln/a24 Apriln/a-1.2 days per decade
First autumn frost20 Octobern/a20 Octobern/a+8.5 days per decade
Growing days180 daysn/a180 daysn/a+9.7 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, 1996 to 2025

A day with at least 82.4 mm (3.2 in) of rain is expected about once in 2 years. A day with at least 201.9 mm (7.9 in) of rain is expected about once in 100 years.

Rainfall return levels at Gray: the daily rain expected about once in a given number of years
Expected about once inA day with at leastNote
2 years82.4 mm (3.2 in)
5 years113.8 mm (4.5 in)
10 years134.8 mm (5.3 in)
25 years161.6 mm (6.4 in)
50 years181.7 mm (7.2 in)Longer than the 30 years of record
100 years201.9 mm (7.9 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 1996 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: 165.1 mm (6.5 in) in 1998; 155.2 mm (6.1 in) in 1996; 139.7 mm (5.5 in) in 2015.

Download the Data

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