Built 2026-10-16 (16 October 2026)

Stillhouse Hollow Dam Weather Records (USC00418646)

Record envelope, standing records and threshold days for Stillhouse Hollow Dam (USC00418646), Texas, United States, with 64 years of record.

Key Facts for Stillhouse Hollow Dam

  • Stillhouse Hollow Dam (USC00418646) is a weather station in Texas, United States at 31.04 latitude and -97.53 longitude, 215 m (706 ft) above sea level.
  • The station reports from 1963 to 2026, 64 years of record.
  • 1,464 records set at Stillhouse Hollow Dam still stand.
  • Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
  • Stillhouse Hollow Dam set a daily record precipitation of 73.7 mm (2.9 in) on 6 June 2026.

About the Station

  • Location: Texas, United States, 31.04 latitude, -97.53 longitude.
  • Elevation: 215 m (706 ft).
  • Period of record: 1963 to 2026, 64 years.
  • Eligible elements: tmax, tmin, prcp, snow, snwd.

Daily Record Envelope and 2026

0 days at or beyond a record
Daily record high and record low at Stillhouse Hollow Dam, with 2026 drawn through them The band shows the record high and record low for each calendar day at Stillhouse Hollow Dam. The lines show the 2026 daily maximum and minimum. 0 days in 2026 matched or passed a record. Temperatures are in degrees Celsius. -40-200204060 JanFebMarAprMayJunJulAugSepOctNovDec
The band shows the record high and record low for each calendar day at Stillhouse Hollow Dam. The lines show the 2026 daily maximum and minimum. 0 days in 2026 matched or passed a record. Temperatures are in degrees Celsius.
Daily record high and record low at Stillhouse Hollow Dam, with 2026 drawn through them
MonthHighest record highLowest record low2026 highest maximum2026 lowest minimum
Jan31.1 C (88.0 F)-14.4 C (6.1 F)n/an/a
Feb36.7 C (98.1 F)-11.1 C (12.0 F)n/an/a
Mar36.1 C (97.0 F)-9.4 C (15.1 F)n/an/a
Apr37.2 C (99.0 F)-2.2 C (28.0 F)n/an/a
May37.8 C (100.0 F)-1.7 C (28.9 F)n/an/a
Jun41.1 C (106.0 F)8.9 C (48.0 F)n/an/a
Jul43.3 C (109.9 F)13.3 C (55.9 F)n/an/a
Aug43.3 C (109.9 F)13.3 C (55.9 F)n/an/a
Sep43.3 C (109.9 F)3.9 C (39.0 F)n/an/a
Oct37.2 C (99.0 F)-5.6 C (21.9 F)n/an/a
Nov34.4 C (93.9 F)-9.4 C (15.1 F)n/an/a
Dec30.0 C (86.0 F)-20.6 C (-5.1 F)n/an/a

Which Years Hold Standing Records

1,464 standing records
Standing records at Stillhouse Hollow Dam by the year they were set 1,464 records at Stillhouse Hollow Dam still stand. 1996 holds the most, with 56. 02040601963: 191964: 181965: 191966: 291967: 371968: 221969: 321970: 361971: 281972: 311973: 271974: 361975: 151976: 341977: 161978: 271979: 271980: 311981: 201982: 331983: 321984: 241985: 211986: 271987: 151988: 111989: 511990: 281991: 351992: 201993: 141994: 201995: 281996: 561997: 211998: 351999: 172000: 412001: 212002: 262003: 262004: 52005: 222006: 202007: 102008: 152009: 212010: 232011: 522012: 262013: 312014: 302015: 162016: 252017: 162018: 252019: 211963196919751981198719931999200520112017
1,464 records at Stillhouse Hollow Dam still stand. 1996 holds the most, with 56.
Standing records at Stillhouse Hollow Dam by the year they were set
Year setStanding records
196319
196418
196519
196629
196737
196822
196932
197036
197128
197231
197327
197436
197515
197634
197716
197827
197927
198031
198120
198233
198332
198424
198521
198627
198715
198811
198951
199028
199135
199220
199314
199420
199528
199656
199721
199835
199917
200041
200121
200226
200326
20045
200522
200620
200710
200815
200921
201023
201152
201226
201331
201430
201516
201625
201716
201825
201921

All-Time Record Progression

5 new records
When Stillhouse Hollow Dam set new all-time records 5 all-time records were set at Stillhouse Hollow Dam between 12 August 1998 and 8 September 2010. Each dot is a new record. Record high minimum temperatureRecord high maximum temperatureRecord daily precipitation12 August 1998: Record high minimum temperature 27.2 C (81.0 F)13 August 1998: Record high minimum temperature 28.3 C (82.9 F)16 July 2000: Record high maximum temperature 42.2 C (108.0 F)2 August 2000: Record high maximum temperature 43.3 C (109.9 F)8 September 2010: Record daily precipitation 254.3 mm (10.0 in)200020052010
5 all-time records were set at Stillhouse Hollow Dam between 12 August 1998 and 8 September 2010. Each dot is a new record.
When Stillhouse Hollow Dam set new all-time records
DateKindDetail
1998-08-12Record high minimum temperatureRecord high minimum temperature 27.2 C (81.0 F)
1998-08-13Record high minimum temperatureRecord high minimum temperature 28.3 C (82.9 F)
2000-07-16Record high maximum temperatureRecord high maximum temperature 42.2 C (108.0 F)
2000-08-02Record high maximum temperatureRecord high maximum temperature 43.3 C (109.9 F)
2010-09-08Record daily precipitationRecord daily precipitation 254.3 mm (10.0 in)

Wettest Day of Each Month

Sep: 254.3 mm (10.0 in)
Record daily precipitation for each month at Stillhouse Hollow Dam The wettest day on record for each calendar month at Stillhouse Hollow Dam. The most was 254.3 mm (10.0 in) on 8 September 2010. 0100200300 Jan: 92.7 mm (3.6 in), 22 January 2024 Jan Feb: 105.9 mm (4.2 in), 4 February 1986 Feb Mar: 110.5 mm (4.4 in), 20 March 2012 Mar Apr: 185.4 mm (7.3 in), 10 April 2024 Apr May: 110.7 mm (4.4 in), 22 May 1979 May Jun: 242.8 mm (9.6 in), 16 June 1964 Jun Jul: 73.4 mm (2.9 in), 9 July 1968 Jul Aug: 153.4 mm (6.0 in), 31 August 2001 Aug Sep: 254.3 mm (10.0 in), 8 September 2010 Sep Oct: 191.0 mm (7.5 in), 31 October 1974 Oct Nov: 77.5 mm (3.1 in), 16 November 2001 Nov Dec: 144.3 mm (5.7 in), 21 December 1997 Dec
The wettest day on record for each calendar month at Stillhouse Hollow Dam. The most was 254.3 mm (10.0 in) on 8 September 2010.
Record daily precipitation for each month at Stillhouse Hollow Dam
MonthRecord daily precipitation (mm)Date
Jan92.7 mm (3.6 in)22 January 2024
Feb105.9 mm (4.2 in)4 February 1986
Mar110.5 mm (4.4 in)20 March 2012
Apr185.4 mm (7.3 in)10 April 2024
May110.7 mm (4.4 in)22 May 1979
Jun242.8 mm (9.6 in)16 June 1964
Jul73.4 mm (2.9 in)9 July 1968
Aug153.4 mm (6.0 in)31 August 2001
Sep254.3 mm (10.0 in)8 September 2010
Oct191.0 mm (7.5 in)31 October 1974
Nov77.5 mm (3.1 in)16 November 2001
Dec144.3 mm (5.7 in)21 December 1997

Period of Record Coverage

1963 to 2019
Days with data per year at Stillhouse Hollow Dam 57 years of record at Stillhouse Hollow Dam, 1963 to 2019. 15 years have data for under 90 percent of days and are left out of rankings: 1963, 1964, 1965, 1967, 1985, 1988, 2003, 2004 and others. 1963: 125 of 365 days1964: 265 of 366 days1965: 284 of 365 days1966: 350 of 365 days1967: 322 of 365 days1968: 357 of 366 days1969: 365 of 365 days1970: 365 of 365 days1971: 362 of 365 days1972: 363 of 366 days1973: 365 of 365 days1974: 363 of 365 days1975: 364 of 365 days1976: 366 of 366 days1977: 364 of 365 days1978: 363 of 365 days1979: 363 of 365 days1980: 366 of 366 days1981: 364 of 365 days1982: 363 of 365 days1983: 364 of 365 days1984: 362 of 366 days1985: 304 of 365 days1986: 363 of 365 days1987: 330 of 365 days1988: 303 of 366 days1989: 364 of 365 days1990: 365 of 365 days1991: 364 of 365 days1992: 365 of 366 days1993: 357 of 365 days1994: 357 of 365 days1995: 355 of 365 days1996: 355 of 366 days1997: 355 of 365 days1998: 360 of 365 days1999: 358 of 365 days2000: 355 of 366 days2001: 345 of 365 days2002: 337 of 365 days2003: 277 of 365 days2004: 193 of 366 days2005: 254 of 365 days2006: 253 of 365 days2007: 261 of 365 days2008: 335 of 366 days2009: 355 of 365 days2010: 330 of 365 days2011: 332 of 365 days2012: 360 of 366 days2013: 338 of 365 days2014: 353 of 365 days2015: 337 of 365 days2016: 322 of 366 days2017: 289 of 365 days2018: 275 of 365 days2019: 147 of 365 days19701980199020002010
57 years of record at Stillhouse Hollow Dam, 1963 to 2019. 15 years have data for under 90 percent of days and are left out of rankings: 1963, 1964, 1965, 1967, 1985, 1988, 2003, 2004 and others.
Days with data per year at Stillhouse Hollow Dam
YearDays with dataShare of yearComplete
196312534%No
196426572%No
196528478%No
196635096%Yes
196732288%No
196835798%Yes
1969365100%Yes
1970365100%Yes
197136299%Yes
197236399%Yes
1973365100%Yes
197436399%Yes
1975364100%Yes
1976366100%Yes
1977364100%Yes
197836399%Yes
197936399%Yes
1980366100%Yes
1981364100%Yes
198236399%Yes
1983364100%Yes
198436299%Yes
198530483%No
198636399%Yes
198733090%Yes
198830383%No
1989364100%Yes
1990365100%Yes
1991364100%Yes
1992365100%Yes
199335798%Yes
199435798%Yes
199535597%Yes
199635597%Yes
199735597%Yes
199836099%Yes
199935898%Yes
200035597%Yes
200134595%Yes
200233792%Yes
200327776%No
200419353%No
200525470%No
200625369%No
200726172%No
200833592%Yes
200935597%Yes
201033090%Yes
201133291%Yes
201236098%Yes
201333893%Yes
201435397%Yes
201533792%Yes
201632288%No
201728979%No
201827575%No
201914740%No

Latest Records

20
Latest records at Stillhouse Hollow Dam
DateStationRecordValueBeat old record byOld record stoodSignificance
6 June 2026Stillhouse Hollow Dam, USdaily rain73.7 mm (2.9 in)21.6 mm (0.9 in)40 years28 of 100 (Routine)
24 January 2026Stillhouse Hollow Dam, USdaily rain51.1 mm (2.0 in)38.7 mm (1.5 in)52 years52 of 100 (Notable)
21 November 2025Stillhouse Hollow Dam, USdaily rain32.8 mm (1.3 in)13.7 mm (0.5 in)16 years20 of 100 (Routine)
26 October 2025Stillhouse Hollow Dam, USdaily rain34.8 mm (1.4 in)1.5 mm (0.06 in)19 years11 of 100 (Routine)
25 October 2025Stillhouse Hollow Dam, USdaily rain42.2 mm (1.7 in)4.6 mm (0.18 in)10 years11 of 100 (Routine)
27 May 2025Stillhouse Hollow Dam, USdaily rain91.7 mm (3.6 in)41.7 mm (1.6 in)31 years38 of 100 (Notable)
30 January 2025Stillhouse Hollow Dam, USdaily rain43.7 mm (1.7 in)21.9 mm (0.9 in)36 years33 of 100 (Routine)
23 July 2024Stillhouse Hollow Dam, USdaily rain43.4 mm (1.7 in)28.2 mm (1.1 in)46 years40 of 100 (Notable)
18 July 2024Stillhouse Hollow Dam, USdaily rain19.8 mm (0.8 in)1.8 mm (0.07 in)10 years10 of 100 (Routine)
12 June 2024Stillhouse Hollow Dam, USdaily rain75.7 mm (3.0 in)37.6 mm (1.5 in)51 years38 of 100 (Notable)
23 May 2024Stillhouse Hollow Dam, USdaily rain26.9 mm (1.1 in)16.0 mm (0.6 in)49 years29 of 100 (Routine)
5 May 2024Stillhouse Hollow Dam, USdaily rain40.6 mm (1.6 in)7.3 mm (0.29 in)49 years24 of 100 (Routine)
10 April 2024Stillhouse Hollow Dam, USmonthly rain185.4 mm (7.3 in)26.1 mm (1.0 in)6 years34 of 100 (Routine)
9 April 2024Stillhouse Hollow Dam, USdaily rain29.2 mm (1.1 in)13.5 mm (0.5 in)6 years15 of 100 (Routine)
25 March 2024Stillhouse Hollow Dam, USdaily rain22.4 mm (0.9 in)0.6 mm (0.02 in)25 years13 of 100 (Routine)
22 January 2024Stillhouse Hollow Dam, USmonthly rain92.7 mm (3.6 in)4.3 mm (0.17 in)11 years22 of 100 (Routine)
24 December 2023Stillhouse Hollow Dam, USdaily rain103.1 mm (4.1 in)80.2 mm (3.2 in)16 years51 of 100 (Notable)
20 May 2023Stillhouse Hollow Dam, USdaily rain38.9 mm (1.5 in)1.1 mm (0.04 in)52 years21 of 100 (Routine)
27 April 2023Stillhouse Hollow Dam, USdaily rain35.8 mm (1.4 in)1.0 mm (0.04 in)6 years8 of 100 (Routine)
3 March 2023Stillhouse Hollow Dam, USdaily rain18.0 mm (0.7 in)0.2 mm (0.01 in)45 years19 of 100 (Routine)

Climate Trend

39 complete years, 1966 to 2015
Annual mean temperature at Stillhouse Hollow Dam as warming stripes, 1966 to 2015 One stripe for each of 39 complete years at Stillhouse Hollow Dam, 1966 to 2015. Blue stripes are years cooler than the station's own mean of 19.0 C (66.3 F); red stripes are warmer. The coolest year was 1989, at 17.7 C (63.8 F), and the warmest was 2012, at 20.7 C (69.2 F). The strongest colour marks a difference of 1.7 C (3.1 F). 1966: 18.5 C, -0.5 C from the station mean1967: 19.2 C, +0.2 C from the station mean1968: 18.0 C, -1.0 C from the station mean1969: 18.8 C, -0.2 C from the station mean1970: 18.6 C, -0.5 C from the station mean1971: 19.4 C, +0.4 C from the station mean1972: 18.9 C, -0.1 C from the station mean1973: 18.5 C, -0.5 C from the station mean1974: 18.7 C, -0.3 C from the station mean1975: 18.5 C, -0.6 C from the station mean1976: 17.9 C, -1.1 C from the station mean1977: 19.3 C, +0.3 C from the station mean1978: 18.4 C, -0.7 C from the station mean1979: 17.7 C, -1.3 C from the station mean1980: 19.0 C, 0.0 C from the station mean1981: 19.1 C, +0.1 C from the station mean1982: 19.2 C, +0.2 C from the station mean1983: 18.1 C, -1.0 C from the station mean1984: 19.6 C, +0.6 C from the station mean1986: 19.4 C, +0.4 C from the station mean1989: 17.7 C, -1.4 C from the station mean1990: 18.8 C, -0.2 C from the station mean1991: 17.8 C, -1.3 C from the station mean1992: 18.7 C, -0.4 C from the station mean1993: 18.7 C, -0.3 C from the station mean1994: 19.5 C, +0.5 C from the station mean1995: 19.7 C, +0.7 C from the station mean1996: 19.8 C, +0.7 C from the station mean1997: 18.9 C, -0.1 C from the station mean1998: 20.5 C, +1.5 C from the station mean1999: 20.6 C, +1.6 C from the station mean2000: 20.2 C, +1.2 C from the station mean2001: 19.6 C, +0.6 C from the station mean2002: 19.6 C, +0.6 C from the station mean2008: 19.6 C, +0.6 C from the station mean2009: 19.6 C, +0.5 C from the station mean2012: 20.7 C, +1.7 C from the station mean2014: 18.3 C, -0.7 C from the station mean2015: 19.3 C, +0.3 C from the station mean19661970197519801985199019952000200520102015
One stripe for each of 39 complete years at Stillhouse Hollow Dam, 1966 to 2015. Blue stripes are years cooler than the station's own mean of 19.0 C (66.3 F); red stripes are warmer. The coolest year was 1989, at 17.7 C (63.8 F), and the warmest was 2012, at 20.7 C (69.2 F). The strongest colour marks a difference of 1.7 C (3.1 F).
Annual mean temperature at Stillhouse Hollow Dam as warming stripes, 1966 to 2015
YearAnnual mean temperatureDifference from the station mean
196618.5 C-0.53 C
196719.2 C+0.15 C
196818.0 C-1.01 C
196918.8 C-0.21 C
197018.6 C-0.48 C
197119.4 C+0.39 C
197218.9 C-0.15 C
197318.5 C-0.50 C
197418.7 C-0.33 C
197518.5 C-0.58 C
197617.9 C-1.13 C
197719.3 C+0.25 C
197818.4 C-0.67 C
197917.7 C-1.35 C
198019.0 C-0.04 C
198119.1 C+0.08 C
198219.2 C+0.21 C
198318.1 C-0.96 C
198419.6 C+0.57 C
198619.4 C+0.36 C
198917.7 C-1.37 C
199018.8 C-0.24 C
199117.8 C-1.26 C
199218.7 C-0.36 C
199318.7 C-0.35 C
199419.5 C+0.47 C
199519.7 C+0.65 C
199619.8 C+0.73 C
199718.9 C-0.10 C
199820.5 C+1.46 C
199920.6 C+1.61 C
200020.2 C+1.19 C
200119.6 C+0.56 C
200219.6 C+0.58 C
200819.6 C+0.57 C
200919.6 C+0.53 C
201220.7 C+1.65 C
201418.3 C-0.75 C
201519.3 C+0.31 C

The annual mean temperature here has risen by 0.3 C (0.1 to 0.4) per decade over 1966 to 2015. In Fahrenheit: 0.5 F (0.2 to 0.8) per decade. The slope is a straight line fitted to 39 complete years; the brackets give its 95 percent interval.

Fitted temperature trends per decade at Stillhouse Hollow Dam
MeasurePer decade (C)Per decade (F)PeriodComplete yearsReading
Annual mean temperature0.3 C (0.1 to 0.4) per decade0.5 F (0.2 to 0.8) per decade1966 to 201539Rise
Mean daily maximum0.4 C (0.2 to 0.6) per decade0.7 F (0.3 to 1.0) per decade1966 to 201539Rise
Mean daily minimum0.16 C (-0.03 to 0.35) per decade0.3 F (-0.1 to 0.6) per decade1966 to 201539Not clearly different from zero

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

1963 to 2026
Yearly extremes at Stillhouse Hollow Dam: the record and the median year
MeasureRecordYear of the recordMedian yearYears with a value
Hottest day (TXx)43.3 C (109.9 F)200040.0 C (104.0 F)57
Coldest night (TNn)-20.6 C (-5.1 F)1989-8.3 C (17.1 F)57
Wettest day (Rx1day)254.3 mm (10.0 in)201076.1 mm (3.0 in)64
Wettest five days (Rx5day)308.6 mm (12.1 in)2001113.1 mm (4.5 in)64
Longest dry spell (CDD)78 days199330 days64

Hottest day (TXx)

Hottest day (TXx) at Stillhouse Hollow Dam by year The hottest day of the year at Stillhouse Hollow Dam, 1963 to 2026. The record is 43.3 C (109.9 F) in 2000, marked on the chart; the median year is 40.0 C (104.0 F). 3638404244198020002020Record: 43.3 C (109.9 F) in 2000
The hottest day of the year at Stillhouse Hollow Dam, 1963 to 2026. The record is 43.3 C (109.9 F) in 2000, marked on the chart; the median year is 40.0 C (104.0 F).
Hottest day (TXx) at Stillhouse Hollow Dam by year
YearHottest day (TXx)
196340.0 C (104.0 F)
196441.7 C (107.1 F)
196538.9 C (102.0 F)
196640.0 C (104.0 F)
196740.0 C (104.0 F)
196837.2 C (99.0 F)
196941.1 C (106.0 F)
197039.4 C (102.9 F)
197138.3 C (100.9 F)
197236.7 C (98.1 F)
197337.2 C (99.0 F)
197438.9 C (102.0 F)
197537.8 C (100.0 F)
197638.3 C (100.9 F)
197738.3 C (100.9 F)
197841.7 C (107.1 F)
197937.2 C (99.0 F)
198041.1 C (106.0 F)
198138.9 C (102.0 F)
198239.4 C (102.9 F)
198338.3 C (100.9 F)
198440.0 C (104.0 F)
198539.4 C (102.9 F)
198640.6 C (105.1 F)
198738.3 C (100.9 F)
198838.9 C (102.0 F)
198938.9 C (102.0 F)
199040.0 C (104.0 F)
199137.2 C (99.0 F)
199237.8 C (100.0 F)
199338.3 C (100.9 F)
199439.4 C (102.9 F)
199540.6 C (105.1 F)
199640.0 C (104.0 F)
199740.0 C (104.0 F)
199840.6 C (105.1 F)
199940.0 C (104.0 F)
200043.3 C (109.9 F)
200139.4 C (102.9 F)
200240.0 C (104.0 F)
200342.8 C (109.0 F)
200438.9 C (102.0 F)
200541.1 C (106.0 F)
200640.0 C (104.0 F)
200737.8 C (100.0 F)
200840.0 C (104.0 F)
200940.0 C (104.0 F)
201040.6 C (105.1 F)
201141.7 C (107.1 F)
201241.1 C (106.0 F)
201340.0 C (104.0 F)
201438.9 C (102.0 F)
201540.0 C (104.0 F)
201640.6 C (105.1 F)
201740.6 C (105.1 F)
201843.3 C (109.9 F)
201938.9 C (102.0 F)
2020n/a
2021n/a
2022n/a
2023n/a
2024n/a
2025n/a
2026n/a

Coldest night (TNn)

Coldest night (TNn) at Stillhouse Hollow Dam by year The coldest night of the year at Stillhouse Hollow Dam, 1963 to 2026. The record is -20.6 C (-5.1 F) in 1989, marked on the chart; the median year is -8.3 C (17.1 F). -25-20-15-10-50198020002020Record: -20.6 C (-5.1 F) in 1989
The coldest night of the year at Stillhouse Hollow Dam, 1963 to 2026. The record is -20.6 C (-5.1 F) in 1989, marked on the chart; the median year is -8.3 C (17.1 F).
Coldest night (TNn) at Stillhouse Hollow Dam by year
YearColdest night (TNn)
1963-8.3 C (17.1 F)
1964-11.7 C (10.9 F)
1965-7.8 C (18.0 F)
1966-12.8 C (9.0 F)
1967-7.2 C (19.0 F)
1968-8.3 C (17.1 F)
1969-6.1 C (21.0 F)
1970-7.8 C (18.0 F)
1971-8.3 C (17.1 F)
1972-10.0 C (14.0 F)
1973-12.8 C (9.0 F)
1974-7.2 C (19.0 F)
1975-8.9 C (16.0 F)
1976-10.6 C (12.9 F)
1977-8.9 C (16.0 F)
1978-8.3 C (17.1 F)
1979-11.7 C (10.9 F)
1980-9.4 C (15.1 F)
1981-10.6 C (12.9 F)
1982-14.4 C (6.1 F)
1983-13.3 C (8.1 F)
1984-10.6 C (12.9 F)
1985-10.6 C (12.9 F)
1986-6.7 C (19.9 F)
1987-4.4 C (24.1 F)
1988-8.9 C (16.0 F)
1989-20.6 C (-5.1 F)
1990-14.4 C (6.1 F)
1991-10.6 C (12.9 F)
1992-11.1 C (12.0 F)
1993-7.2 C (19.0 F)
1994-6.1 C (21.0 F)
1995-7.2 C (19.0 F)
1996-13.3 C (8.1 F)
1997-8.3 C (17.1 F)
1998-5.0 C (23.0 F)
1999-6.1 C (21.0 F)
2000-6.1 C (21.0 F)
2001-5.6 C (21.9 F)
2002-7.2 C (19.0 F)
2003-6.1 C (21.0 F)
2004-6.7 C (19.9 F)
2005-7.8 C (18.0 F)
2006-6.7 C (19.9 F)
2007-8.9 C (16.0 F)
2008-8.3 C (17.1 F)
2009-5.6 C (21.9 F)
2010-11.1 C (12.0 F)
2011-10.0 C (14.0 F)
2012-5.0 C (23.0 F)
2013-6.1 C (21.0 F)
2014-9.4 C (15.1 F)
2015-8.3 C (17.1 F)
2016-7.8 C (18.0 F)
2017-10.0 C (14.0 F)
2018-11.7 C (10.9 F)
2019-6.1 C (21.0 F)
2020n/a
2021n/a
2022n/a
2023n/a
2024n/a
2025n/a
2026n/a

Wettest day (Rx1day)

Wettest day (Rx1day) at Stillhouse Hollow Dam by year The wettest day of the year at Stillhouse Hollow Dam, 1963 to 2026. The record is 254.3 mm (10.0 in) in 2010, marked on the chart; the median year is 76.1 mm (3.0 in). 0100200300198020002020Record: 254.3 mm (10.0 in) in 2010
The wettest day of the year at Stillhouse Hollow Dam, 1963 to 2026. The record is 254.3 mm (10.0 in) in 2010, marked on the chart; the median year is 76.1 mm (3.0 in).
Wettest day (Rx1day) at Stillhouse Hollow Dam by year
YearWettest day (Rx1day)
196353.3 mm (2.1 in)
1964242.8 mm (9.6 in)
196586.4 mm (3.4 in)
196650.8 mm (2.0 in)
196747.0 mm (1.9 in)
196873.4 mm (2.9 in)
196950.8 mm (2.0 in)
197082.6 mm (3.3 in)
197169.9 mm (2.8 in)
197275.7 mm (3.0 in)
197373.4 mm (2.9 in)
1974191.0 mm (7.5 in)
197586.9 mm (3.4 in)
197680.3 mm (3.2 in)
197775.7 mm (3.0 in)
197850.8 mm (2.0 in)
1979110.7 mm (4.4 in)
198078.2 mm (3.1 in)
1981165.4 mm (6.5 in)
198266.5 mm (2.6 in)
198369.9 mm (2.8 in)
1984114.8 mm (4.5 in)
198557.2 mm (2.3 in)
1986105.9 mm (4.2 in)
198748.5 mm (1.9 in)
198868.6 mm (2.7 in)
198971.1 mm (2.8 in)
199066.0 mm (2.6 in)
1991120.7 mm (4.8 in)
199276.5 mm (3.0 in)
199354.6 mm (2.1 in)
199469.9 mm (2.8 in)
199567.6 mm (2.7 in)
199671.1 mm (2.8 in)
1997144.3 mm (5.7 in)
1998122.4 mm (4.8 in)
199951.3 mm (2.0 in)
2000124.7 mm (4.9 in)
2001153.4 mm (6.0 in)
200256.1 mm (2.2 in)
200345.7 mm (1.8 in)
200458.7 mm (2.3 in)
200553.3 mm (2.1 in)
200696.0 mm (3.8 in)
200796.5 mm (3.8 in)
200860.5 mm (2.4 in)
2009136.7 mm (5.4 in)
2010254.3 mm (10.0 in)
201188.1 mm (3.5 in)
2012110.5 mm (4.4 in)
201388.4 mm (3.5 in)
201471.1 mm (2.8 in)
2015190.5 mm (7.5 in)
201662.2 mm (2.4 in)
2017159.3 mm (6.3 in)
201883.8 mm (3.3 in)
201981.8 mm (3.2 in)
202060.7 mm (2.4 in)
202153.6 mm (2.1 in)
202280.5 mm (3.2 in)
2023103.1 mm (4.1 in)
2024185.4 mm (7.3 in)
202591.7 mm (3.6 in)
202673.7 mm (2.9 in)

Wettest five days (Rx5day)

Wettest five days (Rx5day) at Stillhouse Hollow Dam by year The wettest five days of the year at Stillhouse Hollow Dam, 1963 to 2026. The record is 308.6 mm (12.1 in) in 2001, marked on the chart; the median year is 113.1 mm (4.5 in). 0100200300400198020002020Record: 308.6 mm (12.1 in) in 2001
The wettest five days of the year at Stillhouse Hollow Dam, 1963 to 2026. The record is 308.6 mm (12.1 in) in 2001, marked on the chart; the median year is 113.1 mm (4.5 in).
Wettest five days (Rx5day) at Stillhouse Hollow Dam by year
YearWettest five days (Rx5day)
196353.3 mm (2.1 in)
1964265.6 mm (10.5 in)
196591.5 mm (3.6 in)
196664.8 mm (2.6 in)
196770.1 mm (2.8 in)
1968109.0 mm (4.3 in)
196962.0 mm (2.4 in)
1970110.6 mm (4.4 in)
1971127.8 mm (5.0 in)
197282.3 mm (3.2 in)
1973123.2 mm (4.9 in)
1974203.7 mm (8.0 in)
1975129.8 mm (5.1 in)
1976159.0 mm (6.3 in)
1977138.0 mm (5.4 in)
197861.2 mm (2.4 in)
1979128.3 mm (5.1 in)
1980120.1 mm (4.7 in)
1981194.1 mm (7.6 in)
198278.5 mm (3.1 in)
198382.6 mm (3.3 in)
1984126.7 mm (5.0 in)
198586.6 mm (3.4 in)
1986141.0 mm (5.6 in)
1987112.1 mm (4.4 in)
198879.3 mm (3.1 in)
1989102.0 mm (4.0 in)
1990125.7 mm (4.9 in)
1991190.8 mm (7.5 in)
1992105.7 mm (4.2 in)
199386.4 mm (3.4 in)
199489.4 mm (3.5 in)
199576.2 mm (3.0 in)
1996111.0 mm (4.4 in)
1997155.5 mm (6.1 in)
1998183.9 mm (7.2 in)
199962.5 mm (2.5 in)
2000132.8 mm (5.2 in)
2001308.6 mm (12.1 in)
2002125.0 mm (4.9 in)
2003105.2 mm (4.1 in)
2004125.5 mm (4.9 in)
2005111.6 mm (4.4 in)
2006104.2 mm (4.1 in)
2007168.0 mm (6.6 in)
2008114.1 mm (4.5 in)
2009244.4 mm (9.6 in)
2010266.7 mm (10.5 in)
201199.0 mm (3.9 in)
2012111.5 mm (4.4 in)
2013124.3 mm (4.9 in)
2014137.6 mm (5.4 in)
2015233.9 mm (9.2 in)
2016165.6 mm (6.5 in)
2017172.5 mm (6.8 in)
2018105.2 mm (4.1 in)
2019100.3 mm (3.9 in)
202069.1 mm (2.7 in)
202172.9 mm (2.9 in)
202285.8 mm (3.4 in)
2023116.3 mm (4.6 in)
2024214.6 mm (8.4 in)
2025132.6 mm (5.2 in)
202681.8 mm (3.2 in)

Longest dry spell (CDD)

Longest dry spell (CDD) at Stillhouse Hollow Dam by year The longest dry spell of the year at Stillhouse Hollow Dam, 1963 to 2026. The record is 78 days in 1993, marked on the chart; the median year is 30 days. 020406080198020002020Record: 78 days in 1993
The longest dry spell of the year at Stillhouse Hollow Dam, 1963 to 2026. The record is 78 days in 1993, marked on the chart; the median year is 30 days.
Longest dry spell (CDD) at Stillhouse Hollow Dam by year
YearLongest dry spell (CDD)
196343 days
196459 days
196529 days
196635 days
196727 days
196823 days
196932 days
197045 days
197133 days
197237 days
197322 days
197429 days
197530 days
197625 days
197734 days
197843 days
197931 days
198047 days
198120 days
198226 days
198332 days
198424 days
198534 days
198642 days
198730 days
198828 days
198922 days
199024 days
199124 days
199237 days
199378 days
199425 days
199520 days
199627 days
199727 days
199827 days
199937 days
200039 days
200136 days
200226 days
200344 days
200421 days
200533 days
200627 days
200718 days
200824 days
200936 days
201035 days
201161 days
201240 days
201323 days
201425 days
201548 days
201645 days
201724 days
201836 days
201926 days
202030 days
202141 days
202251 days
202365 days
202425 days
202529 days
202623 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

38 years with a frost

Across 38 years with a frost, the median last spring frost at Stillhouse Hollow Dam falls on 10 March and the median first autumn frost on 19 November, which leaves a median of 253 days between them.

Fitted over all years, the growing season changes by -0.5 days per decade at this station.

Frost dates and growing season at Stillhouse Hollow Dam
MeasureMedian, all yearsEarliest periodRecent period (1975 to 2015)Recent against earliestFitted trend
Last spring frost10 Marchn/a10 Marchn/a+1.8 days per decade
First autumn frost19 Novembern/a20 Novembern/a+1.2 days per decade
Growing days253 daysn/a255 daysn/a-0.5 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

55 years, 1964 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 296.7 mm (11.7 in) of rain is expected about once in 100 years.

Rainfall return levels at Stillhouse Hollow Dam: 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 years117.4 mm (4.6 in)
10 years148.5 mm (5.8 in)
25 years197.6 mm (7.8 in)
50 years242.8 mm (9.6 in)
100 years296.7 mm (11.7 in)Longer than the 55 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, 55 years of values from 1964 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: 254.3 mm (10.0 in) in 2010; 242.8 mm (9.6 in) in 1964; 191.0 mm (7.5 in) in 1974.

Download the Data

  • Data for Stillhouse Hollow Dam standing records by year: CSV or JSON. Field meanings are on the data page.
  • Data for Stillhouse Hollow 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 2026-10-14 (14 October 2026). Records are computed by this site and are not official.

Data as of . Last revised (2026-10-12).