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Built 2026-10-15 (15 October 2026)

Round Spring 2SW Weather Records (USC00237309)

Record envelope, standing records and threshold days for Round Spring 2SW (USC00237309), Missouri, United States, with 134 years of record.

Key Facts for Round Spring 2SW

  • Round Spring 2SW (USC00237309) is a weather station in Missouri, United States at 37.26 latitude and -91.43 longitude, 253 m (829 ft) above sea level.
  • The station reports from 1893 to 2026, 134 years of record.
  • 1,464 records set at Round Spring 2SW still stand.
  • Records are tracked for prcp, snow, snwd: an element needs 30 years of data to be eligible.
  • Round Spring 2SW set a daily record precipitation of 19.1 mm (0.8 in) 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: Missouri, United States, 37.26 latitude, -91.43 longitude.
  • Elevation: 253 m (829 ft).
  • Period of record: 1893 to 2026, 134 years.
  • Eligible elements: prcp, snow, snwd.

Daily Record Envelope and 2026

52 days at or beyond a record
Daily record high and record low at Round Spring 2SW, with 2026 drawn through them The band shows the record high and record low for each calendar day at Round Spring 2SW. The lines show the 2026 daily maximum and minimum. 52 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 Round Spring 2SW. The lines show the 2026 daily maximum and minimum. 52 days in 2026 matched or passed a record. Temperatures are in degrees Celsius.
Daily record high and record low at Round Spring 2SW, with 2026 drawn through them
MonthHighest record highLowest record low2026 highest maximum2026 lowest minimum
Jan24.4 C (75.9 F)-27.2 C (-17.0 F)24.4 C (75.9 F)-25.0 C (-13.0 F)
Feb31.1 C (88.0 F)-29.4 C (-20.9 F)25.6 C (78.1 F)-21.1 C (-6.0 F)
Mar35.6 C (96.1 F)-19.4 C (-2.9 F)35.6 C (96.1 F)-12.2 C (10.0 F)
Apr33.3 C (91.9 F)-10.6 C (12.9 F)30.0 C (86.0 F)-2.2 C (28.0 F)
May34.4 C (93.9 F)-2.8 C (27.0 F)29.4 C (84.9 F)-0.6 C (30.9 F)
Jun41.7 C (107.1 F)5.0 C (41.0 F)33.3 C (91.9 F)10.0 C (50.0 F)
Jul41.1 C (106.0 F)8.3 C (46.9 F)38.9 C (102.0 F)15.0 C (59.0 F)
Aug41.7 C (107.1 F)5.0 C (41.0 F)38.9 C (102.0 F)11.7 C (53.1 F)
Sep37.8 C (100.0 F)-1.1 C (30.0 F)40.0 C (104.0 F)7.8 C (46.0 F)
Oct34.4 C (93.9 F)-8.3 C (17.1 F)35.6 C (96.1 F)2.8 C (37.0 F)
Nov29.4 C (84.9 F)-15.6 C (3.9 F)n/an/a
Dec26.7 C (80.1 F)-22.2 C (-8.0 F)n/an/a

Which Years Hold Standing Records

1,464 standing records
Standing records at Round Spring 2SW by the year they were set 1,464 records at Round Spring 2SW still stand. 2014 holds the most, with 86. 02550751001978: 201981: 42003: 612004: 612005: 602006: 592007: 622008: 512009: 592010: 582011: 612012: 732013: 752014: 862015: 582016: 472017: 572018: 582019: 492020: 382021: 612022: 792023: 582024: 522025: 622026: 55197820042007201020132016201920222025
1,464 records at Round Spring 2SW still stand. 2014 holds the most, with 86.
Standing records at Round Spring 2SW by the year they were set
Year setStanding records
197820
19814
200361
200461
200560
200659
200762
200851
200959
201058
201161
201273
201375
201486
201558
201647
201757
201858
201949
202038
202161
202279
202358
202452
202562
202655

All-Time Record Progression

1 new records
When Round Spring 2SW set new all-time records 1 all-time records were set at Round Spring 2SW between 14 November 1993 and 14 November 1993. Each dot is a new record. Record daily precipitation14 November 1993: Record daily precipitation 188.0 mm (7.4 in)
1 all-time records were set at Round Spring 2SW between 14 November 1993 and 14 November 1993. Each dot is a new record.
When Round Spring 2SW set new all-time records
DateKindDetail
1993-11-14Record daily precipitationRecord daily precipitation 188.0 mm (7.4 in)

Wettest Day of Each Month

Nov: 188.0 mm (7.4 in)
Record daily precipitation for each month at Round Spring 2SW The wettest day on record for each calendar month at Round Spring 2SW. The most was 188.0 mm (7.4 in) on 14 November 1993. 050100150200 Jan: 106.2 mm (4.2 in), 1 January 1948 Jan Feb: 111.8 mm (4.4 in), 27 February 1893 Feb Mar: 150.4 mm (5.9 in), 19 March 2008 Mar Apr: 121.4 mm (4.8 in), 30 April 2017 Apr May: 166.6 mm (6.6 in), 15 May 1956 May Jun: 87.4 mm (3.4 in), 17 June 1985 Jun Jul: 103.1 mm (4.1 in), 19 July 2013 Jul Aug: 141.2 mm (5.6 in), 14 August 1946 Aug Sep: 126.7 mm (5.0 in), 23 September 1984 Sep Oct: 97.8 mm (3.9 in), 30 October 1942 Oct Nov: 188.0 mm (7.4 in), 14 November 1993 Nov Dec: 120.4 mm (4.7 in), 28 December 2015 Dec
The wettest day on record for each calendar month at Round Spring 2SW. The most was 188.0 mm (7.4 in) on 14 November 1993.
Record daily precipitation for each month at Round Spring 2SW
MonthRecord daily precipitation (mm)Date
Jan106.2 mm (4.2 in)1 January 1948
Feb111.8 mm (4.4 in)27 February 1893
Mar150.4 mm (5.9 in)19 March 2008
Apr121.4 mm (4.8 in)30 April 2017
May166.6 mm (6.6 in)15 May 1956
Jun87.4 mm (3.4 in)17 June 1985
Jul103.1 mm (4.1 in)19 July 2013
Aug141.2 mm (5.6 in)14 August 1946
Sep126.7 mm (5.0 in)23 September 1984
Oct97.8 mm (3.9 in)30 October 1942
Nov188.0 mm (7.4 in)14 November 1993
Dec120.4 mm (4.7 in)28 December 2015

Period of Record Coverage

1976 to 2026
Days with data per year at Round Spring 2SW 27 years of record at Round Spring 2SW, 1976 to 2026. 9 years have data for under 90 percent of days and are left out of rankings: 1976, 1978, 1981, 2003, 2006, 2010, 2011, 2012 and others. 1976: 8 of 366 days1978: 104 of 365 days1981: 21 of 365 days2003: 300 of 365 days2004: 343 of 366 days2005: 349 of 365 days2006: 322 of 365 days2007: 353 of 365 days2008: 340 of 366 days2009: 345 of 365 days2010: 315 of 365 days2011: 299 of 365 days2012: 296 of 366 days2013: 344 of 365 days2014: 360 of 365 days2015: 363 of 365 days2016: 365 of 366 days2017: 362 of 365 days2018: 363 of 365 days2019: 365 of 365 days2020: 366 of 366 days2021: 365 of 365 days2022: 365 of 365 days2023: 365 of 365 days2024: 358 of 366 days2025: 365 of 365 days2026: 283 of 365 days20052010201520202025
27 years of record at Round Spring 2SW, 1976 to 2026. 9 years have data for under 90 percent of days and are left out of rankings: 1976, 1978, 1981, 2003, 2006, 2010, 2011, 2012 and others.
Days with data per year at Round Spring 2SW
YearDays with dataShare of yearComplete
197682%No
197810428%No
1981216%No
200330082%No
200434394%Yes
200534996%Yes
200632288%No
200735397%Yes
200834093%Yes
200934595%Yes
201031586%No
201129982%No
201229681%No
201334494%Yes
201436099%Yes
201536399%Yes
2016365100%Yes
201736299%Yes
201836399%Yes
2019365100%Yes
2020366100%Yes
2021365100%Yes
2022365100%Yes
2023365100%Yes
202435898%Yes
2025365100%Yes
202628378%No

Latest Records

20
Latest records at Round Spring 2SW
DateStationRecordValueBeat old record byOld record stoodSignificance
2 October 2026Round Spring 2SW, USdaily rain (Provisional)19.1 mm (0.8 in)12.5 mm (0.5 in)80 years20 of 100 (Routine)
29 January 2026Round Spring 2SW, USdaily snow depth (Tie)12.7 cm (5.0 in)tie16 years3 of 100 (Routine)
28 January 2026Round Spring 2SW, USdaily snow depth15.2 cm (6.0 in)2.5 cm (1.0 in)16 years19 of 100 (Routine)
27 January 2026Round Spring 2SW, USdaily snow depth (Tie)15.2 cm (6.0 in)tie40 years5 of 100 (Routine)
26 January 2026Round Spring 2SW, USdaily snow depth17.8 cm (7.0 in)10.2 cm (4.0 in)3 years35 of 100 (Notable)
25 January 2026Round Spring 2SW, USmonthly snow depth20.3 cm (8.0 in)5.1 cm (2.0 in)44 years44 of 100 (Notable)
25 January 2026Round Spring 2SW, USmonthly snowfall18.0 cm (7.1 in)2.8 cm (1.1 in)15 years31 of 100 (Routine)
2 December 2025Round Spring 2SW, USdaily snowfall0.5 cm (0.2 in)0.5 cm (0.2 in)82 years20 of 100 (Routine)
5 June 2025Round Spring 2SW, USdaily rain48.0 mm (1.9 in)20.3 mm (0.8 in)43 years35 of 100 (Notable)
20 May 2025Round Spring 2SW, USdaily rain41.4 mm (1.6 in)1.3 mm (0.05 in)15 years14 of 100 (Routine)
6 April 2025Round Spring 2SW, USdaily rain37.3 mm (1.5 in)13.9 mm (0.5 in)60 years37 of 100 (Notable)
5 April 2025Round Spring 2SW, USdaily rain104.9 mm (4.1 in)46.5 mm (1.8 in)60 years58 of 100 (Notable)
21 February 2025Round Spring 2SW, USdaily snow depth10.2 cm (4.0 in)2.6 cm (1.0 in)47 years26 of 100 (Routine)
19 February 2025Round Spring 2SW, USdaily snowfall10.9 cm (4.3 in)10.9 cm (4.3 in)130 years64 of 100 (Major)
12 January 2025Round Spring 2SW, USdaily snow depth (Tie)7.6 cm (3.0 in)tie40 years5 of 100 (Routine)
11 January 2025Round Spring 2SW, USdaily snow depth12.7 cm (5.0 in)5.1 cm (2.0 in)40 years33 of 100 (Routine)
11 January 2025Round Spring 2SW, USdaily snowfall2.8 cm (1.1 in)0.5 cm (0.2 in)14 years15 of 100 (Routine)
16 December 2024Round Spring 2SW, USdaily rain34.5 mm (1.4 in)13.2 mm (0.5 in)130 years47 of 100 (Notable)
4 November 2024Round Spring 2SW, USdaily rain150.1 mm (5.9 in)91.2 mm (3.6 in)50 years65 of 100 (Major)
26 May 2024Round Spring 2SW, USdaily rain70.4 mm (2.8 in)27.7 mm (1.1 in)17 years31 of 100 (Routine)

Climate Trend

19 complete years, 2004 to 2025
Annual mean temperature at Round Spring 2SW as warming stripes, 2004 to 2025 One stripe for each of 19 complete years at Round Spring 2SW, 2004 to 2025. Blue stripes are years cooler than the station's own mean of 13.0 C (55.4 F); red stripes are warmer. The coolest year was 2014, at 11.4 C (52.4 F), and the warmest was 2024, at 14.1 C (57.3 F). The strongest colour marks a difference of 1.7 C (3.1 F). 2004: 12.5 C, -0.5 C from the station mean2005: 13.1 C, +0.1 C from the station mean2007: 13.3 C, +0.3 C from the station mean2008: 12.4 C, -0.6 C from the station mean2009: 12.5 C, -0.5 C from the station mean2010: 13.2 C, +0.2 C from the station mean2013: 11.8 C, -1.2 C from the station mean2014: 11.4 C, -1.6 C from the station mean2015: 12.8 C, -0.2 C from the station mean2016: 13.6 C, +0.6 C from the station mean2017: 13.9 C, +0.9 C from the station mean2018: 13.0 C, 0.0 C from the station mean2019: 13.0 C, 0.0 C from the station mean2020: 13.0 C, 0.0 C from the station mean2021: 13.0 C, 0.0 C from the station mean2022: 12.7 C, -0.3 C from the station mean2023: 14.0 C, +1.0 C from the station mean2024: 14.1 C, +1.1 C from the station mean2025: 13.8 C, +0.8 C from the station mean20042006200820102012201420162018202020222024
One stripe for each of 19 complete years at Round Spring 2SW, 2004 to 2025. Blue stripes are years cooler than the station's own mean of 13.0 C (55.4 F); red stripes are warmer. The coolest year was 2014, at 11.4 C (52.4 F), and the warmest was 2024, at 14.1 C (57.3 F). The strongest colour marks a difference of 1.7 C (3.1 F).
Annual mean temperature at Round Spring 2SW as warming stripes, 2004 to 2025
YearAnnual mean temperatureDifference from the station mean
200412.5 C-0.51 C
200513.1 C+0.10 C
200713.3 C+0.33 C
200812.4 C-0.62 C
200912.5 C-0.53 C
201013.2 C+0.15 C
201311.8 C-1.18 C
201411.4 C-1.64 C
201512.8 C-0.23 C
201613.6 C+0.60 C
201713.9 C+0.91 C
201813.0 C+0.01 C
201913.0 C+0.00 C
202013.0 C+0.04 C
202113.0 C+0.02 C
202212.7 C-0.32 C
202314.0 C+1.02 C
202414.1 C+1.08 C
202513.8 C+0.76 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

1893 to 2026
Yearly extremes at Round Spring 2SW: the record and the median year
MeasureRecordYear of the recordMedian yearYears with a value
Hottest day (TXx)41.7 C (107.1 F)200737.2 C (99.0 F)27
Coldest night (TNn)-29.4 C (-20.9 F)2015-19.4 C (-2.9 F)26
Wettest day (Rx1day)188.0 mm (7.4 in)199378.2 mm (3.1 in)84
Wettest five days (Rx5day)255.9 mm (10.1 in)2017111.3 mm (4.4 in)83
Longest dry spell (CDD)49 days196322 days84

Hottest day (TXx)

Hottest day (TXx) at Round Spring 2SW by year The hottest day of the year at Round Spring 2SW, 1893 to 2026. The record is 41.7 C (107.1 F) in 2007, marked on the chart; the median year is 37.2 C (99.0 F). 25303540451900192019401960198020002020Record: 41.7 C (107.1 F) in 2007
The hottest day of the year at Round Spring 2SW, 1893 to 2026. The record is 41.7 C (107.1 F) in 2007, marked on the chart; the median year is 37.2 C (99.0 F).
Hottest day (TXx) at Round Spring 2SW by year
YearHottest day (TXx)
1893n/a
1894n/a
1940n/a
1941n/a
1942n/a
1943n/a
1944n/a
1945n/a
1946n/a
1947n/a
1948n/a
1949n/a
1950n/a
1951n/a
1952n/a
1953n/a
1954n/a
1955n/a
1956n/a
1957n/a
1958n/a
1959n/a
1960n/a
1961n/a
1962n/a
1963n/a
1964n/a
1965n/a
1966n/a
1967n/a
1968n/a
1969n/a
1970n/a
1971n/a
1972n/a
1973n/a
1974n/a
1975n/a
197625.6 C (78.1 F)
1977n/a
197835.0 C (95.0 F)
1979n/a
1980n/a
198131.1 C (88.0 F)
1982n/a
1983n/a
1984n/a
1985n/a
1986n/a
1987n/a
1988n/a
1989n/a
1990n/a
1991n/a
1992n/a
1993n/a
1994n/a
1995n/a
1996n/a
2002n/a
200337.8 C (100.0 F)
200436.1 C (97.0 F)
200537.8 C (100.0 F)
200637.8 C (100.0 F)
200741.7 C (107.1 F)
200836.1 C (97.0 F)
200936.1 C (97.0 F)
201039.4 C (102.9 F)
201139.4 C (102.9 F)
201241.7 C (107.1 F)
201336.7 C (98.1 F)
201440.0 C (104.0 F)
201535.0 C (95.0 F)
201636.1 C (97.0 F)
201738.9 C (102.0 F)
201837.2 C (99.0 F)
201935.6 C (96.1 F)
202037.2 C (99.0 F)
202136.1 C (97.0 F)
202241.1 C (106.0 F)
202341.7 C (107.1 F)
202437.2 C (99.0 F)
202538.9 C (102.0 F)
202640.0 C (104.0 F)

Coldest night (TNn)

Coldest night (TNn) at Round Spring 2SW by year The coldest night of the year at Round Spring 2SW, 1893 to 2026. The record is -29.4 C (-20.9 F) in 2015, marked on the chart; the median year is -19.4 C (-2.9 F). -30-20-100101900192019401960198020002020Record: -29.4 C (-20.9 F) in 2015
The coldest night of the year at Round Spring 2SW, 1893 to 2026. The record is -29.4 C (-20.9 F) in 2015, marked on the chart; the median year is -19.4 C (-2.9 F).
Coldest night (TNn) at Round Spring 2SW by year
YearColdest night (TNn)
1893n/a
1894n/a
1940n/a
1941n/a
1942n/a
1943n/a
1944n/a
1945n/a
1946n/a
1947n/a
1948n/a
1949n/a
1950n/a
1951n/a
1952n/a
1953n/a
1954n/a
1955n/a
1956n/a
1957n/a
1958n/a
1959n/a
1960n/a
1961n/a
1962n/a
1963n/a
1964n/a
1965n/a
1966n/a
1967n/a
1968n/a
1969n/a
1970n/a
1971n/a
1972n/a
1973n/a
1974n/a
1975n/a
1976n/a
1977n/a
1978-19.4 C (-2.9 F)
1979n/a
1980n/a
19811.1 C (34.0 F)
1982n/a
1983n/a
1984n/a
1985n/a
1986n/a
1987n/a
1988n/a
1989n/a
1990n/a
1991n/a
1992n/a
1993n/a
1994n/a
1995n/a
1996n/a
2002n/a
2003-23.9 C (-11.0 F)
2004-19.4 C (-2.9 F)
2005-19.4 C (-2.9 F)
2006-18.9 C (-2.0 F)
2007-18.3 C (-0.9 F)
2008-18.9 C (-2.0 F)
2009-17.2 C (1.0 F)
2010-21.1 C (-6.0 F)
2011-26.1 C (-15.0 F)
2012-15.0 C (5.0 F)
2013-18.3 C (-0.9 F)
2014-27.2 C (-17.0 F)
2015-29.4 C (-20.9 F)
2016-17.2 C (1.0 F)
2017-20.0 C (-4.0 F)
2018-21.7 C (-7.1 F)
2019-15.6 C (3.9 F)
2020-13.9 C (7.0 F)
2021-21.7 C (-7.1 F)
2022-22.2 C (-8.0 F)
2023-11.1 C (12.0 F)
2024-21.1 C (-6.0 F)
2025-24.4 C (-11.9 F)
2026-25.0 C (-13.0 F)

Wettest day (Rx1day)

Wettest day (Rx1day) at Round Spring 2SW by year The wettest day of the year at Round Spring 2SW, 1893 to 2026. The record is 188.0 mm (7.4 in) in 1993, marked on the chart; the median year is 78.2 mm (3.1 in). 0501001502001900192019401960198020002020Record: 188.0 mm (7.4 in) in 1993
The wettest day of the year at Round Spring 2SW, 1893 to 2026. The record is 188.0 mm (7.4 in) in 1993, marked on the chart; the median year is 78.2 mm (3.1 in).
Wettest day (Rx1day) at Round Spring 2SW by year
YearWettest day (Rx1day)
1893111.8 mm (4.4 in)
189475.2 mm (3.0 in)
194042.7 mm (1.7 in)
1941106.7 mm (4.2 in)
194297.8 mm (3.9 in)
194350.8 mm (2.0 in)
194449.5 mm (1.9 in)
194573.7 mm (2.9 in)
1946141.2 mm (5.6 in)
194767.8 mm (2.7 in)
1948106.2 mm (4.2 in)
194962.0 mm (2.4 in)
195092.7 mm (3.6 in)
195168.6 mm (2.7 in)
195262.2 mm (2.4 in)
195340.6 mm (1.6 in)
195447.2 mm (1.9 in)
195574.2 mm (2.9 in)
1956166.6 mm (6.6 in)
1957101.6 mm (4.0 in)
195865.3 mm (2.6 in)
195962.2 mm (2.4 in)
196044.5 mm (1.8 in)
196147.0 mm (1.9 in)
196264.5 mm (2.5 in)
196372.6 mm (2.9 in)
196479.5 mm (3.1 in)
196578.2 mm (3.1 in)
1966111.3 mm (4.4 in)
196784.3 mm (3.3 in)
196866.0 mm (2.6 in)
196992.5 mm (3.6 in)
197099.8 mm (3.9 in)
197189.4 mm (3.5 in)
197280.8 mm (3.2 in)
1973134.6 mm (5.3 in)
1974114.3 mm (4.5 in)
197574.7 mm (2.9 in)
197685.6 mm (3.4 in)
197776.2 mm (3.0 in)
197889.4 mm (3.5 in)
1979101.6 mm (4.0 in)
198031.8 mm (1.3 in)
198186.4 mm (3.4 in)
198281.3 mm (3.2 in)
198395.3 mm (3.8 in)
1984126.7 mm (5.0 in)
1985123.2 mm (4.9 in)
198655.4 mm (2.2 in)
198794.2 mm (3.7 in)
198849.0 mm (1.9 in)
198968.6 mm (2.7 in)
199061.5 mm (2.4 in)
199163.0 mm (2.5 in)
199281.5 mm (3.2 in)
1993188.0 mm (7.4 in)
199496.5 mm (3.8 in)
199567.8 mm (2.7 in)
19962.5 mm (0.10 in)
200222.9 mm (0.9 in)
2003101.6 mm (4.0 in)
200458.2 mm (2.3 in)
2005101.1 mm (4.0 in)
200651.3 mm (2.0 in)
200748.5 mm (1.9 in)
2008150.4 mm (5.9 in)
200978.0 mm (3.1 in)
201088.4 mm (3.5 in)
201164.5 mm (2.5 in)
201254.9 mm (2.2 in)
2013103.1 mm (4.1 in)
201471.1 mm (2.8 in)
2015120.4 mm (4.7 in)
201684.6 mm (3.3 in)
2017121.4 mm (4.8 in)
201874.2 mm (2.9 in)
201963.5 mm (2.5 in)
202080.3 mm (3.2 in)
202185.6 mm (3.4 in)
202255.6 mm (2.2 in)
202378.2 mm (3.1 in)
2024150.1 mm (5.9 in)
2025104.9 mm (4.1 in)
202653.6 mm (2.1 in)

Wettest five days (Rx5day)

Wettest five days (Rx5day) at Round Spring 2SW by year The wettest five days of the year at Round Spring 2SW, 1893 to 2026. The record is 255.9 mm (10.1 in) in 2017, marked on the chart; the median year is 111.3 mm (4.4 in). 01002003001900192019401960198020002020Record: 255.9 mm (10.1 in) in 2017
The wettest five days of the year at Round Spring 2SW, 1893 to 2026. The record is 255.9 mm (10.1 in) in 2017, marked on the chart; the median year is 111.3 mm (4.4 in).
Wettest five days (Rx5day) at Round Spring 2SW by year
YearWettest five days (Rx5day)
1893135.4 mm (5.3 in)
1894107.4 mm (4.2 in)
194091.5 mm (3.6 in)
1941106.7 mm (4.2 in)
1942107.9 mm (4.2 in)
194357.7 mm (2.3 in)
194475.4 mm (3.0 in)
1945192.3 mm (7.6 in)
1946150.3 mm (5.9 in)
1947108.0 mm (4.3 in)
1948111.3 mm (4.4 in)
1949121.6 mm (4.8 in)
1950127.5 mm (5.0 in)
195187.7 mm (3.5 in)
195275.7 mm (3.0 in)
195350.1 mm (2.0 in)
195471.6 mm (2.8 in)
195583.6 mm (3.3 in)
1956179.3 mm (7.1 in)
1957117.3 mm (4.6 in)
1958118.6 mm (4.7 in)
1959107.9 mm (4.2 in)
196071.9 mm (2.8 in)
196164.5 mm (2.5 in)
196287.1 mm (3.4 in)
196394.3 mm (3.7 in)
1964101.6 mm (4.0 in)
1965108.7 mm (4.3 in)
1966111.3 mm (4.4 in)
196796.5 mm (3.8 in)
1968105.1 mm (4.1 in)
196993.5 mm (3.7 in)
1970174.9 mm (6.9 in)
1971143.0 mm (5.6 in)
1972145.4 mm (5.7 in)
1973166.6 mm (6.6 in)
1974146.8 mm (5.8 in)
197578.5 mm (3.1 in)
1976135.1 mm (5.3 in)
1977126.5 mm (5.0 in)
1978130.0 mm (5.1 in)
1979219.0 mm (8.6 in)
198058.5 mm (2.3 in)
1981130.1 mm (5.1 in)
1982135.4 mm (5.3 in)
1983134.1 mm (5.3 in)
1984136.8 mm (5.4 in)
1985181.3 mm (7.1 in)
198694.8 mm (3.7 in)
198798.0 mm (3.9 in)
198884.8 mm (3.3 in)
198993.2 mm (3.7 in)
199092.3 mm (3.6 in)
1991173.0 mm (6.8 in)
1992138.7 mm (5.5 in)
1993244.2 mm (9.6 in)
1994149.8 mm (5.9 in)
1995104.9 mm (4.1 in)
1996n/a
200226.5 mm (1.0 in)
2003140.0 mm (5.5 in)
2004106.7 mm (4.2 in)
2005143.5 mm (5.6 in)
200690.5 mm (3.6 in)
200784.4 mm (3.3 in)
2008195.1 mm (7.7 in)
2009103.4 mm (4.1 in)
201093.7 mm (3.7 in)
2011210.5 mm (8.3 in)
201254.9 mm (2.2 in)
2013178.2 mm (7.0 in)
2014110.0 mm (4.3 in)
2015176.9 mm (7.0 in)
2016124.7 mm (4.9 in)
2017255.9 mm (10.1 in)
2018142.5 mm (5.6 in)
2019137.4 mm (5.4 in)
2020124.9 mm (4.9 in)
202197.3 mm (3.8 in)
202285.3 mm (3.4 in)
2023133.6 mm (5.3 in)
2024255.8 mm (10.1 in)
2025179.9 mm (7.1 in)
202671.7 mm (2.8 in)

Longest dry spell (CDD)

Longest dry spell (CDD) at Round Spring 2SW by year The longest dry spell of the year at Round Spring 2SW, 1893 to 2026. The record is 49 days in 1963, marked on the chart; the median year is 22 days. 02040601900192019401960198020002020Record: 49 days in 1963
The longest dry spell of the year at Round Spring 2SW, 1893 to 2026. The record is 49 days in 1963, marked on the chart; the median year is 22 days.
Longest dry spell (CDD) at Round Spring 2SW by year
YearLongest dry spell (CDD)
189319 days
189414 days
194026 days
194123 days
194225 days
194333 days
194440 days
194525 days
194619 days
194732 days
194820 days
194942 days
195030 days
195122 days
195224 days
195347 days
195423 days
195529 days
195627 days
195727 days
195832 days
195926 days
196021 days
196123 days
196232 days
196349 days
196434 days
196529 days
196629 days
196725 days
196826 days
196933 days
197033 days
197124 days
197216 days
197319 days
197420 days
197523 days
197613 days
197714 days
197818 days
197926 days
198029 days
198120 days
198220 days
198320 days
198420 days
198524 days
198622 days
198716 days
198822 days
198921 days
199026 days
199118 days
199219 days
199315 days
199433 days
199544 days
19964 days
200218 days
200312 days
200439 days
200523 days
200619 days
200716 days
200822 days
200923 days
201019 days
201118 days
201216 days
201321 days
201420 days
201516 days
201622 days
201721 days
201813 days
201923 days
202020 days
202116 days
202220 days
202320 days
202432 days
202523 days
202621 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.

Rainfall Return Levels

58 years, 1941 to 2025

A day with at least 79.7 mm (3.1 in) of rain is expected about once in 2 years. A day with at least 173.1 mm (6.8 in) of rain is expected about once in 100 years.

Rainfall return levels at Round Spring 2SW: the daily rain expected about once in a given number of years
Expected about once inA day with at leastNote
2 years79.7 mm (3.1 in)
5 years106.5 mm (4.2 in)
10 years123.5 mm (4.9 in)
25 years144.2 mm (5.7 in)
50 years158.9 mm (6.3 in)
100 years173.1 mm (6.8 in)Longer than the 58 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, 58 years of values from 1941 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: 166.6 mm (6.6 in) in 1956; 150.4 mm (5.9 in) in 2008; 150.1 mm (5.9 in) in 2024.

Download the Data

  • Data for Round Spring 2SW standing records by year: CSV or JSON. Field meanings are on the data page.
  • Data for Round Spring 2SW 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 (2026-10-13).