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Built 2026-10-14 (14 October 2026)

On This Day, 18 August: Notable Weather Records

20 notable weather records on 18 August across the years, led by Suhana, RU, with events and storms for the date.

Key Facts for 18 August

  • 20 notable weather records were set or tied on 18 August in 15 years (1954 to 2021).
  • Suhana set an all-time record daily precipitation of 99.1 mm (3.9 in) on 18 August 2021.
  • 2 extreme weather events peaked on 18 August.
  • 5 named storms were active on 18 August.

Records on 18 August Through the Years

1954 to 2021
Notable records on 18 August by year and type 20 notable records were set or tied on 18 August between 1954 and 2021. Each dot is a record, in the lane of its type. Record daily precipitation18 August 2021: Suhana, 99.1 mm (3.9 in)18 August 2021: Delta, 111.5 mm (4.4 in)18 August 2007: Emmetsburg, 228.6 mm (9.0 in)18 August 1986: Newberry, 264.7 mm (10.4 in)18 August 2017: Koetong, 113.8 mm (4.5 in)18 August 2021: Oak City, 57.4 mm (2.3 in)18 August 2018: Watertown Wwtp, 137.7 mm (5.4 in)18 August 1993: Moorcroft 3S, 96.5 mm (3.8 in)18 August 1990: Selby, 88.1 mm (3.5 in)18 August 2016: Ohringen, 76.2 mm (3.0 in)18 August 1954: Teriberka, 81.4 mm (3.2 in)18 August 2010: Nemours (Ghazaouet), 27.9 mm (1.1 in)18 August 2021: Tyler Pounds Fld, 120.7 mm (4.8 in)18 August 2014: Robertson (Caalong Street), 146.0 mm (5.7 in)18 August 2008: Pitea, 74.0 mm (2.9 in)18 August 1980: Morgantown Muni AP, 98.8 mm (3.9 in)18 August 2007: Faulkton, 95.8 mm (3.8 in)18 August 2015: Lead, 56.6 mm (2.2 in)18 August 2021: Cullowhee, 77.7 mm (3.1 in)18 August 1998: Bodalla Post Office, 85.6 mm (3.4 in)1960197019801990200020102020
20 notable records were set or tied on 18 August between 1954 and 2021. Each dot is a record, in the lane of its type.
Notable records on 18 August by year and type
DateKindDetail
1954-08-18Record daily precipitationTeriberka, 81.4 mm (3.2 in)
1980-08-18Record daily precipitationMorgantown Muni AP, 98.8 mm (3.9 in)
1986-08-18Record daily precipitationNewberry, 264.7 mm (10.4 in)
1990-08-18Record daily precipitationSelby, 88.1 mm (3.5 in)
1993-08-18Record daily precipitationMoorcroft 3S, 96.5 mm (3.8 in)
1998-08-18Record daily precipitationBodalla Post Office, 85.6 mm (3.4 in)
2007-08-18Record daily precipitationEmmetsburg, 228.6 mm (9.0 in)
2007-08-18Record daily precipitationFaulkton, 95.8 mm (3.8 in)
2008-08-18Record daily precipitationPitea, 74.0 mm (2.9 in)
2010-08-18Record daily precipitationNemours (Ghazaouet), 27.9 mm (1.1 in)
2014-08-18Record daily precipitationRobertson (Caalong Street), 146.0 mm (5.7 in)
2015-08-18Record daily precipitationLead, 56.6 mm (2.2 in)
2016-08-18Record daily precipitationOhringen, 76.2 mm (3.0 in)
2017-08-18Record daily precipitationKoetong, 113.8 mm (4.5 in)
2018-08-18Record daily precipitationWatertown Wwtp, 137.7 mm (5.4 in)
2021-08-18Record daily precipitationSuhana, 99.1 mm (3.9 in)
2021-08-18Record daily precipitationDelta, 111.5 mm (4.4 in)
2021-08-18Record daily precipitationOak City, 57.4 mm (2.3 in)
2021-08-18Record daily precipitationTyler Pounds Fld, 120.7 mm (4.8 in)
2021-08-18Record daily precipitationCullowhee, 77.7 mm (3.1 in)

Notable Records

Notable records on 18 August, by significance
DateStationRecordValueBeat old record byOld record stoodSignificance
18 August 2021Suhana, RUall-time rain99.1 mm (3.9 in)42.9 mm (1.7 in)79 years91 of 100 (Exceptional)
18 August 2021Delta, USall-time rain111.5 mm (4.4 in)45.7 mm (1.8 in)74 years90 of 100 (Exceptional)
18 August 2007Emmetsburg, USall-time rain228.6 mm (9.0 in)66.0 mm (2.6 in)56 years87 of 100 (Exceptional)
18 August 1986Newberry, USall-time rain264.7 mm (10.4 in)76.7 mm (3.0 in)56 years86 of 100 (Exceptional)
18 August 2017Koetong, AUmonthly rain113.8 mm (4.5 in)37.6 mm (1.5 in)127 years82 of 100 (Exceptional)
18 August 2021Oak City, USmonthly rain57.4 mm (2.3 in)23.1 mm (0.9 in)74 years82 of 100 (Exceptional)
18 August 2018Watertown Wwtp, USmonthly rain137.7 mm (5.4 in)38.6 mm (1.5 in)103 years81 of 100 (Exceptional)
18 August 1993Moorcroft 3S, USall-time rain96.5 mm (3.8 in)20.3 mm (0.8 in)82 years81 of 100 (Exceptional)
18 August 1990Selby, USmonthly rain88.1 mm (3.5 in)45.9 mm (1.8 in)79 years81 of 100 (Exceptional)
18 August 2016Ohringen, DEmonthly rain76.2 mm (3.0 in)30.6 mm (1.2 in)70 years81 of 100 (Exceptional)
18 August 1954Teriberka, RUall-time rain81.4 mm (3.2 in)19.2 mm (0.8 in)54 years81 of 100 (Exceptional)
18 August 2010Nemours (Ghazaouet), DZdaily rain27.9 mm (1.1 in)27.9 mm (1.1 in)131 years80 of 100 (Exceptional)
18 August 2021Tyler Pounds Fld, USdaily rain120.7 mm (4.8 in)87.7 mm (3.5 in)118 years80 of 100 (Exceptional)
18 August 2014Robertson (Caalong Street), AUdaily rain146.0 mm (5.7 in)120.6 mm (4.7 in)114 years80 of 100 (Exceptional)
18 August 2008Pitea, SEdaily rain74.0 mm (2.9 in)36.9 mm (1.5 in)108 years80 of 100 (Exceptional)
18 August 1980Morgantown Muni AP, USdaily rain98.8 mm (3.9 in)75.4 mm (3.0 in)106 years80 of 100 (Exceptional)
18 August 2007Faulkton, USdaily rain95.8 mm (3.8 in)61.5 mm (2.4 in)102 years80 of 100 (Exceptional)
18 August 2015Lead, USdaily rain56.6 mm (2.2 in)39.1 mm (1.5 in)102 years80 of 100 (Exceptional)
18 August 2021Cullowhee, USdaily rain77.7 mm (3.1 in)45.9 mm (1.8 in)100 years80 of 100 (Exceptional)
18 August 1998Bodalla Post Office, AUdaily rain85.6 mm (3.4 in)71.6 mm (2.8 in)98 years79 of 100 (Major)

Events

Storms

Download the Data

  • Data for records on 18 August: 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 2026-10-12 (12 October 2026). Records are computed by this site and are not official.

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