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Tioga Hammond Dam Weather Records (USC00368868)

Record envelope, standing records and threshold days for Tioga Hammond Dam (USC00368868), Pennsylvania, United States, with 54 years of record.

Key Facts for Tioga Hammond Dam

  • Tioga Hammond Dam (USC00368868) is a weather station in Pennsylvania, United States at 41.90 latitude and -77.14 longitude, 375 m (1,230 ft) above sea level.
  • The station reports from 1973 to 2026, 54 years of record.
  • 1,464 records set at Tioga Hammond Dam still stand.
  • Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
  • Tioga Hammond Dam tied a daily record high minimum temperature of 16.7 C (62.1 F) on 18 September 2026 (provisional).

Provisional Records

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

About the Station

  • Location: Pennsylvania, United States, 41.90 latitude, -77.14 longitude.
  • Elevation: 375 m (1,230 ft).
  • Period of record: 1973 to 2026, 54 years.
  • Eligible elements: tmax, tmin, prcp, snow, snwd.

Daily Record Envelope and 2026

15 days at or beyond a record
Daily record high and record low at Tioga Hammond Dam, with 2026 drawn through them The band shows the record high and record low for each calendar day at Tioga Hammond Dam. The lines show the 2026 daily maximum and minimum. 15 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 Tioga Hammond Dam. The lines show the 2026 daily maximum and minimum. 15 days in 2026 matched or passed a record. Temperatures are in degrees Celsius.
Daily record high and record low at Tioga Hammond Dam, with 2026 drawn through them
MonthHighest record highLowest record low2026 highest maximum2026 lowest minimum
Jan17.2 C (63.0 F)-30.0 C (-22.0 F)10.6 C (51.1 F)-21.1 C (-6.0 F)
Feb22.2 C (72.0 F)-27.2 C (-17.0 F)11.7 C (53.1 F)-24.4 C (-11.9 F)
Mar27.2 C (81.0 F)-25.6 C (-14.1 F)23.9 C (75.0 F)-12.8 C (9.0 F)
Apr34.4 C (93.9 F)-11.7 C (10.9 F)26.7 C (80.1 F)-8.9 C (16.0 F)
May33.3 C (91.9 F)-5.6 C (21.9 F)31.7 C (89.1 F)-1.7 C (28.9 F)
Jun35.0 C (95.0 F)1.1 C (34.0 F)30.6 C (87.1 F)3.9 C (39.0 F)
Jul39.4 C (102.9 F)5.6 C (42.1 F)33.3 C (91.9 F)8.9 C (48.0 F)
Aug35.6 C (96.1 F)3.9 C (39.0 F)29.4 C (84.9 F)7.8 C (46.0 F)
Sep33.3 C (91.9 F)-3.9 C (25.0 F)30.0 C (86.0 F)3.3 C (37.9 F)
Oct28.3 C (82.9 F)-8.9 C (16.0 F)23.3 C (73.9 F)1.1 C (34.0 F)
Nov25.6 C (78.1 F)-16.1 C (3.0 F)n/an/a
Dec19.4 C (66.9 F)-26.1 C (-15.0 F)n/an/a

Which Years Hold Standing Records

1,464 standing records
Standing records at Tioga Hammond Dam by the year they were set 1,464 records at Tioga Hammond Dam still stand. 2015 holds the most, with 89. 02550751001973: 31974: 341975: 301976: 541977: 271981: 41983: 171984: 641985: 251986: 451987: 381988: 691989: 541990: 551991: 641992: 541993: 322008: 352009: 332010: 372011: 462012: 472013: 472014: 592015: 892016: 502017: 432018: 492019: 382020: 322021: 352022: 322023: 272024: 332025: 322026: 31197319771985198919932011201520192023
1,464 records at Tioga Hammond Dam still stand. 2015 holds the most, with 89.
Standing records at Tioga Hammond Dam by the year they were set
Year setStanding records
19733
197434
197530
197654
197727
19814
198317
198464
198525
198645
198738
198869
198954
199055
199164
199254
199332
200835
200933
201037
201146
201247
201347
201459
201589
201650
201743
201849
201938
202032
202135
202232
202327
202433
202532
202631

All-Time Record Progression

1 new records
When Tioga Hammond Dam set new all-time records 1 all-time records were set at Tioga Hammond Dam between 8 September 2011 and 8 September 2011. Each dot is a new record. Record daily precipitation8 September 2011: Record daily precipitation 104.6 mm (4.1 in)
1 all-time records were set at Tioga Hammond Dam between 8 September 2011 and 8 September 2011. Each dot is a new record.
When Tioga Hammond Dam set new all-time records
DateKindDetail
2011-09-08Record daily precipitationRecord daily precipitation 104.6 mm (4.1 in)

Wettest Day of Each Month

Sep: 104.6 mm (4.1 in)
Record daily precipitation for each month at Tioga Hammond Dam The wettest day on record for each calendar month at Tioga Hammond Dam. The most was 104.6 mm (4.1 in) on 8 September 2011. 050100150 Jan: 48.8 mm (1.9 in), 21 January 1995 Jan Feb: 46.7 mm (1.8 in), 15 February 1984 Feb Mar: 50.3 mm (2.0 in), 3 March 1994 Mar Apr: 58.4 mm (2.3 in), 3 April 2005 Apr May: 66.8 mm (2.6 in), 16 May 2014 May Jun: 83.8 mm (3.3 in), 24 June 1998 Jun Jul: 73.2 mm (2.9 in), 2 July 2013 Jul Aug: 96.0 mm (3.8 in), 10 August 2024 Aug Sep: 104.6 mm (4.1 in), 8 September 2011 Sep Oct: 101.9 mm (4.0 in), 1 October 2010 Oct Nov: 79.8 mm (3.1 in), 9 November 1996 Nov Dec: 53.3 mm (2.1 in), 25 December 2020 Dec
The wettest day on record for each calendar month at Tioga Hammond Dam. The most was 104.6 mm (4.1 in) on 8 September 2011.
Record daily precipitation for each month at Tioga Hammond Dam
MonthRecord daily precipitation (mm)Date
Jan48.8 mm (1.9 in)21 January 1995
Feb46.7 mm (1.8 in)15 February 1984
Mar50.3 mm (2.0 in)3 March 1994
Apr58.4 mm (2.3 in)3 April 2005
May66.8 mm (2.6 in)16 May 2014
Jun83.8 mm (3.3 in)24 June 1998
Jul73.2 mm (2.9 in)2 July 2013
Aug96.0 mm (3.8 in)10 August 2024
Sep104.6 mm (4.1 in)8 September 2011
Oct101.9 mm (4.0 in)1 October 2010
Nov79.8 mm (3.1 in)9 November 1996
Dec53.3 mm (2.1 in)25 December 2020

Period of Record Coverage

1973 to 2026
Days with data per year at Tioga Hammond Dam 36 years of record at Tioga Hammond Dam, 1973 to 2026. 10 years have data for under 90 percent of days and are left out of rankings: 1973, 1974, 1975, 1976, 1977, 1981, 1983, 1985 and others. 1973: 9 of 365 days1974: 209 of 365 days1975: 291 of 365 days1976: 265 of 366 days1977: 114 of 365 days1981: 28 of 365 days1983: 111 of 365 days1984: 331 of 366 days1985: 199 of 365 days1986: 332 of 365 days1987: 339 of 365 days1988: 332 of 366 days1989: 336 of 365 days1990: 333 of 365 days1991: 332 of 365 days1992: 340 of 366 days1993: 202 of 365 days2008: 334 of 366 days2009: 363 of 365 days2010: 362 of 365 days2011: 364 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: 285 of 365 days1975198519902010201520202025
36 years of record at Tioga Hammond Dam, 1973 to 2026. 10 years have data for under 90 percent of days and are left out of rankings: 1973, 1974, 1975, 1976, 1977, 1981, 1983, 1985 and others.
Days with data per year at Tioga Hammond Dam
YearDays with dataShare of yearComplete
197392%No
197420957%No
197529180%No
197626572%No
197711431%No
1981288%No
198311130%No
198433190%Yes
198519955%No
198633291%Yes
198733993%Yes
198833291%Yes
198933692%Yes
199033391%Yes
199133291%Yes
199234093%Yes
199320255%No
200833491%Yes
200936399%Yes
201036299%Yes
2011364100%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
202628578%No

Latest Records

20
Latest records at Tioga Hammond Dam
DateStationRecordValueBeat old record byOld record stoodSignificance
18 September 2026Tioga Hammond Dam, USdaily high min (Tie, Provisional)16.7 C (62.1 F)tie39 years4 of 100 (Routine)
3 August 2026Tioga Hammond Dam, USdaily rain31.0 mm (1.2 in)10.2 mm (0.4 in)8 years16 of 100 (Routine)
3 August 2026Tioga Hammond Dam, USdaily low max21.7 C (71.1 F)1.6 C (2.9 F)4 years10 of 100 (Routine)
30 July 2026Tioga Hammond Dam, USdaily low max (Tie)19.4 C (66.9 F)tie12 years2 of 100 (Routine)
29 July 2026Tioga Hammond Dam, USdaily rain34.3 mm (1.4 in)15.0 mm (0.6 in)3 years19 of 100 (Routine)
29 July 2026Tioga Hammond Dam, USdaily low max (Tie)22.2 C (72.0 F)tie12 years2 of 100 (Routine)
7 July 2026Tioga Hammond Dam, USdaily rain44.7 mm (1.8 in)21.1 mm (0.8 in)41 years37 of 100 (Notable)
6 July 2026Tioga Hammond Dam, USdaily rain35.3 mm (1.4 in)19.8 mm (0.8 in)21 years30 of 100 (Routine)
4 July 2026Tioga Hammond Dam, USdaily high max (Tie)33.3 C (91.9 F)tie52 years5 of 100 (Routine)
3 July 2026Tioga Hammond Dam, USdaily high min21.1 C (70.0 F)1.7 C (3.1 F)8 years12 of 100 (Routine)
12 June 2026Tioga Hammond Dam, USdaily high min18.9 C (66.0 F)2.2 C (4.0 F)16 years15 of 100 (Routine)
11 June 2026Tioga Hammond Dam, USdaily high min18.9 C (66.0 F)0.6 C (1.1 F)5 years7 of 100 (Routine)
25 May 2026Tioga Hammond Dam, USdaily rain12.7 mm (0.5 in)0.8 mm (0.03 in)16 years10 of 100 (Routine)
24 May 2026Tioga Hammond Dam, USdaily low max8.9 C (48.0 F)5.0 C (9.0 F)0 years13 of 100 (Routine)
20 May 2026Tioga Hammond Dam, USdaily high min17.8 C (64.0 F)1.1 C (2.0 F)40 years19 of 100 (Routine)
20 May 2026Tioga Hammond Dam, USdaily high max (Tie)30.0 C (86.0 F)tie51 years5 of 100 (Routine)
19 May 2026Tioga Hammond Dam, USdaily high max (Tie)31.7 C (89.1 F)tie8 years1 of 100 (Routine)
12 May 2026Tioga Hammond Dam, USdaily low min (Tie)-1.7 C (28.9 F)tie36 years3 of 100 (Routine)
22 April 2026Tioga Hammond Dam, USdaily low min-5.6 C (21.9 F)1.2 C (2.2 F)4 years8 of 100 (Routine)
21 April 2026Tioga Hammond Dam, USdaily low max2.8 C (37.0 F)1.6 C (2.9 F)37 years18 of 100 (Routine)

Climate Trend

25 complete years, 1984 to 2025
Annual mean temperature at Tioga Hammond Dam as warming stripes, 1984 to 2025 One stripe for each of 25 complete years at Tioga Hammond Dam, 1984 to 2025. Blue stripes are years cooler than the station's own mean of 8.7 C (47.6 F); red stripes are warmer. The coolest year was 2014, at 7.3 C (45.2 F), and the warmest was 2012, at 10.0 C (50.0 F). The strongest colour marks a difference of 1.4 C (2.5 F). 1984: 8.2 C, -0.4 C from the station mean1986: 8.6 C, 0.0 C from the station mean1987: 8.4 C, -0.3 C from the station mean1988: 8.0 C, -0.6 C from the station mean1989: 7.5 C, -1.2 C from the station mean1990: 9.3 C, +0.7 C from the station mean1991: 9.5 C, +0.9 C from the station mean1992: 7.5 C, -1.2 C from the station mean2009: 7.9 C, -0.8 C from the station mean2010: 9.1 C, +0.4 C from the station mean2011: 9.0 C, +0.4 C from the station mean2012: 10.0 C, +1.3 C from the station mean2013: 8.5 C, -0.2 C from the station mean2014: 7.3 C, -1.3 C from the station mean2015: 8.1 C, -0.5 C from the station mean2016: 9.3 C, +0.6 C from the station mean2017: 9.0 C, +0.3 C from the station mean2018: 8.5 C, -0.1 C from the station mean2019: 8.2 C, -0.4 C from the station mean2020: 9.4 C, +0.7 C from the station mean2021: 9.2 C, +0.5 C from the station mean2022: 8.3 C, -0.3 C from the station mean2023: 9.5 C, +0.9 C from the station mean2024: 9.6 C, +0.9 C from the station mean2025: 8.4 C, -0.3 C from the station mean198419901995200020052010201520202025
One stripe for each of 25 complete years at Tioga Hammond Dam, 1984 to 2025. Blue stripes are years cooler than the station's own mean of 8.7 C (47.6 F); red stripes are warmer. The coolest year was 2014, at 7.3 C (45.2 F), and the warmest was 2012, at 10.0 C (50.0 F). The strongest colour marks a difference of 1.4 C (2.5 F).
Annual mean temperature at Tioga Hammond Dam as warming stripes, 1984 to 2025
YearAnnual mean temperatureDifference from the station mean
19848.2 C-0.41 C
19868.6 C-0.01 C
19878.4 C-0.29 C
19888.0 C-0.64 C
19897.5 C-1.19 C
19909.3 C+0.68 C
19919.5 C+0.86 C
19927.5 C-1.20 C
20097.9 C-0.77 C
20109.1 C+0.43 C
20119.0 C+0.36 C
201210.0 C+1.33 C
20138.5 C-0.19 C
20147.3 C-1.31 C
20158.1 C-0.52 C
20169.3 C+0.60 C
20179.0 C+0.35 C
20188.5 C-0.11 C
20198.2 C-0.42 C
20209.4 C+0.74 C
20219.2 C+0.55 C
20228.3 C-0.33 C
20239.5 C+0.89 C
20249.6 C+0.94 C
20258.4 C-0.29 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

1973 to 2026
Yearly extremes at Tioga Hammond Dam: the record and the median year
MeasureRecordYear of the recordMedian yearYears with a value
Hottest day (TXx)39.4 C (102.9 F)201133.1 C (91.5 F)36
Coldest night (TNn)-30.0 C (-22.0 F)1984-22.0 C (-7.5 F)36
Wettest day (Rx1day)104.6 mm (4.1 in)201152.1 mm (2.0 in)50
Wettest five days (Rx5day)161.5 mm (6.4 in)201181.2 mm (3.2 in)50
Longest dry spell (CDD)30 days200616 days50

Hottest day (TXx)

Hottest day (TXx) at Tioga Hammond Dam by year The hottest day of the year at Tioga Hammond Dam, 1973 to 2026. The record is 39.4 C (102.9 F) in 2011, marked on the chart; the median year is 33.1 C (91.5 F). 01020304019801990200020102020Record: 39.4 C (102.9 F) in 2011
The hottest day of the year at Tioga Hammond Dam, 1973 to 2026. The record is 39.4 C (102.9 F) in 2011, marked on the chart; the median year is 33.1 C (91.5 F).
Hottest day (TXx) at Tioga Hammond Dam by year
YearHottest day (TXx)
19735.6 C (42.1 F)
197434.4 C (93.9 F)
197535.6 C (96.1 F)
197632.2 C (90.0 F)
197734.4 C (93.9 F)
198120.6 C (69.1 F)
198331.7 C (89.1 F)
198432.2 C (90.0 F)
198531.7 C (89.1 F)
198632.2 C (90.0 F)
198733.3 C (91.9 F)
198838.3 C (100.9 F)
198932.2 C (90.0 F)
199033.3 C (91.9 F)
199134.4 C (93.9 F)
199231.1 C (88.0 F)
199336.1 C (97.0 F)
1994n/a
1995n/a
1996n/a
1997n/a
1998n/a
1999n/a
2000n/a
2001n/a
2002n/a
2003n/a
2004n/a
2005n/a
2006n/a
2007n/a
200833.9 C (93.0 F)
200932.8 C (91.0 F)
201035.6 C (96.1 F)
201139.4 C (102.9 F)
201235.6 C (96.1 F)
201332.8 C (91.0 F)
201431.7 C (89.1 F)
201532.8 C (91.0 F)
201635.6 C (96.1 F)
201731.7 C (89.1 F)
201835.0 C (95.0 F)
201932.2 C (90.0 F)
202033.9 C (93.0 F)
202133.9 C (93.0 F)
202232.8 C (91.0 F)
202332.2 C (90.0 F)
202432.8 C (91.0 F)
202535.0 C (95.0 F)
202633.3 C (91.9 F)

Coldest night (TNn)

Coldest night (TNn) at Tioga Hammond Dam by year The coldest night of the year at Tioga Hammond Dam, 1973 to 2026. The record is -30.0 C (-22.0 F) in 1984, marked on the chart; the median year is -22.0 C (-7.5 F). -30-20-10019801990200020102020Record: -30.0 C (-22.0 F) in 1984
The coldest night of the year at Tioga Hammond Dam, 1973 to 2026. The record is -30.0 C (-22.0 F) in 1984, marked on the chart; the median year is -22.0 C (-7.5 F).
Coldest night (TNn) at Tioga Hammond Dam by year
YearColdest night (TNn)
1973-19.4 C (-2.9 F)
1974-12.2 C (10.0 F)
1975-20.6 C (-5.1 F)
1976-26.7 C (-16.1 F)
1977-26.1 C (-15.0 F)
1981-2.2 C (28.0 F)
1983-20.6 C (-5.1 F)
1984-30.0 C (-22.0 F)
1985-25.6 C (-14.1 F)
1986-19.4 C (-2.9 F)
1987-24.4 C (-11.9 F)
1988-23.3 C (-9.9 F)
1989-26.1 C (-15.0 F)
1990-18.3 C (-0.9 F)
1991-21.1 C (-6.0 F)
1992-18.9 C (-2.0 F)
1993-25.6 C (-14.1 F)
1994n/a
1995n/a
1996n/a
1997n/a
1998n/a
1999n/a
2000n/a
2001n/a
2002n/a
2003n/a
2004n/a
2005n/a
2006n/a
2007n/a
2008-21.1 C (-6.0 F)
2009-26.1 C (-15.0 F)
2010-22.8 C (-9.0 F)
2011-27.8 C (-18.0 F)
2012-17.2 C (1.0 F)
2013-20.0 C (-4.0 F)
2014-27.2 C (-17.0 F)
2015-26.1 C (-15.0 F)
2016-22.8 C (-9.0 F)
2017-18.9 C (-2.0 F)
2018-22.8 C (-9.0 F)
2019-25.6 C (-14.1 F)
2020-18.3 C (-0.9 F)
2021-17.8 C (0.0 F)
2022-26.7 C (-16.1 F)
2023-20.6 C (-5.1 F)
2024-20.6 C (-5.1 F)
2025-21.1 C (-6.0 F)
2026-24.4 C (-11.9 F)

Wettest day (Rx1day)

Wettest day (Rx1day) at Tioga Hammond Dam by year The wettest day of the year at Tioga Hammond Dam, 1973 to 2026. The record is 104.6 mm (4.1 in) in 2011, marked on the chart; the median year is 52.1 mm (2.0 in). 2040608010012019801990200020102020Record: 104.6 mm (4.1 in) in 2011
The wettest day of the year at Tioga Hammond Dam, 1973 to 2026. The record is 104.6 mm (4.1 in) in 2011, marked on the chart; the median year is 52.1 mm (2.0 in).
Wettest day (Rx1day) at Tioga Hammond Dam by year
YearWettest day (Rx1day)
197329.2 mm (1.1 in)
197436.3 mm (1.4 in)
197592.2 mm (3.6 in)
197661.0 mm (2.4 in)
197745.0 mm (1.8 in)
198159.2 mm (2.3 in)
198336.1 mm (1.4 in)
198446.7 mm (1.8 in)
198547.0 mm (1.9 in)
198635.6 mm (1.4 in)
198733.5 mm (1.3 in)
198835.6 mm (1.4 in)
198938.9 mm (1.5 in)
199049.8 mm (2.0 in)
199149.5 mm (1.9 in)
199248.5 mm (1.9 in)
199350.3 mm (2.0 in)
199483.3 mm (3.3 in)
199561.0 mm (2.4 in)
199679.8 mm (3.1 in)
199739.9 mm (1.6 in)
199883.8 mm (3.3 in)
199966.0 mm (2.6 in)
200041.4 mm (1.6 in)
200167.3 mm (2.6 in)
200235.6 mm (1.4 in)
200363.0 mm (2.5 in)
200498.0 mm (3.9 in)
200558.4 mm (2.3 in)
200652.8 mm (2.1 in)
200736.3 mm (1.4 in)
200849.5 mm (1.9 in)
200932.8 mm (1.3 in)
2010101.9 mm (4.0 in)
2011104.6 mm (4.1 in)
201267.1 mm (2.6 in)
201373.2 mm (2.9 in)
201466.8 mm (2.6 in)
201555.9 mm (2.2 in)
201643.7 mm (1.7 in)
201769.9 mm (2.8 in)
201862.2 mm (2.4 in)
201932.3 mm (1.3 in)
202053.3 mm (2.1 in)
202151.3 mm (2.0 in)
202266.5 mm (2.6 in)
202341.4 mm (1.6 in)
202496.0 mm (3.8 in)
202554.1 mm (2.1 in)
202644.7 mm (1.8 in)

Wettest five days (Rx5day)

Wettest five days (Rx5day) at Tioga Hammond Dam by year The wettest five days of the year at Tioga Hammond Dam, 1973 to 2026. The record is 161.5 mm (6.4 in) in 2011, marked on the chart; the median year is 81.2 mm (3.2 in). 05010015020019801990200020102020Record: 161.5 mm (6.4 in) in 2011
The wettest five days of the year at Tioga Hammond Dam, 1973 to 2026. The record is 161.5 mm (6.4 in) in 2011, marked on the chart; the median year is 81.2 mm (3.2 in).
Wettest five days (Rx5day) at Tioga Hammond Dam by year
YearWettest five days (Rx5day)
197346.5 mm (1.8 in)
197475.4 mm (3.0 in)
1975157.5 mm (6.2 in)
1976100.6 mm (4.0 in)
197727.0 mm (1.1 in)
198188.6 mm (3.5 in)
198368.3 mm (2.7 in)
198463.7 mm (2.5 in)
198550.6 mm (2.0 in)
198658.5 mm (2.3 in)
198769.1 mm (2.7 in)
198882.1 mm (3.2 in)
198984.4 mm (3.3 in)
199070.3 mm (2.8 in)
199151.3 mm (2.0 in)
199281.6 mm (3.2 in)
199380.3 mm (3.2 in)
1994134.4 mm (5.3 in)
199580.1 mm (3.2 in)
1996115.9 mm (4.6 in)
199754.6 mm (2.1 in)
1998109.7 mm (4.3 in)
199974.9 mm (2.9 in)
200054.4 mm (2.1 in)
200179.2 mm (3.1 in)
200275.8 mm (3.0 in)
200382.1 mm (3.2 in)
2004102.1 mm (4.0 in)
2005107.5 mm (4.2 in)
200686.7 mm (3.4 in)
200749.9 mm (2.0 in)
200888.9 mm (3.5 in)
200960.0 mm (2.4 in)
2010124.5 mm (4.9 in)
2011161.5 mm (6.4 in)
201293.3 mm (3.7 in)
201398.1 mm (3.9 in)
201480.8 mm (3.2 in)
201574.0 mm (2.9 in)
201691.7 mm (3.6 in)
201793.6 mm (3.7 in)
2018159.5 mm (6.3 in)
201954.4 mm (2.1 in)
202069.4 mm (2.7 in)
202182.1 mm (3.2 in)
202280.7 mm (3.2 in)
202368.8 mm (2.7 in)
2024108.2 mm (4.3 in)
202595.0 mm (3.7 in)
202691.7 mm (3.6 in)

Longest dry spell (CDD)

Longest dry spell (CDD) at Tioga Hammond Dam by year The longest dry spell of the year at Tioga Hammond Dam, 1973 to 2026. The record is 30 days in 2006, marked on the chart; the median year is 16 days. 010203019801990200020102020Record: 30 days in 2006
The longest dry spell of the year at Tioga Hammond Dam, 1973 to 2026. The record is 30 days in 2006, marked on the chart; the median year is 16 days.
Longest dry spell (CDD) at Tioga Hammond Dam by year
YearLongest dry spell (CDD)
19736 days
197413 days
197520 days
197616 days
197719 days
198110 days
19837 days
198417 days
198515 days
198615 days
198723 days
198815 days
198921 days
199011 days
199117 days
199216 days
199313 days
199413 days
199515 days
199615 days
199719 days
199813 days
199915 days
200011 days
200114 days
200222 days
200319 days
200415 days
200515 days
200630 days
200715 days
200816 days
200913 days
201019 days
201116 days
201216 days
201312 days
201417 days
201519 days
201617 days
201715 days
201814 days
201911 days
202024 days
202119 days
202218 days
202318 days
202425 days
202516 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

25 years with a frost

Across 25 years with a frost, the median last spring frost at Tioga Hammond Dam falls on 11 May and the median first autumn frost on 12 October, which leaves a median of 159 days between them.

Fitted over all years, the growing season changes by +5.0 days per decade at this station.

Frost dates and growing season at Tioga Hammond Dam
MeasureMedian, all yearsEarliest periodRecent period (1984 to 2025)Recent against earliestFitted trend
Last spring frost11 Mayn/a11 Mayn/a-1.7 days per decade
First autumn frost12 Octobern/a12 Octobern/a+3.3 days per decade
Growing days159 daysn/a159 daysn/a+5.0 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

42 years, 1975 to 2025

A day with at least 55.2 mm (2.2 in) of rain is expected about once in 2 years. A day with at least 126.4 mm (5.0 in) of rain is expected about once in 100 years.

Rainfall return levels at Tioga Hammond Dam: the daily rain expected about once in a given number of years
Expected about once inA day with at leastNote
2 years55.2 mm (2.2 in)
5 years73.9 mm (2.9 in)
10 years86.4 mm (3.4 in)
25 years102.4 mm (4.0 in)
50 years114.4 mm (4.5 in)Longer than the 42 years of record
100 years126.4 mm (5.0 in)Longer than the 42 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, 42 years of values from 1975 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: 104.6 mm (4.1 in) in 2011; 101.9 mm (4.0 in) in 2010; 98.0 mm (3.9 in) in 2004.

Download the Data

  • Data for Tioga Hammond Dam standing records by year: CSV or JSON. Field meanings are on the data page.
  • Data for Tioga Hammond Dam 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 2026-10-15 (15 October 2026). Records are computed by this site and are not official.

Data as of . Last revised (2026-10-15).