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Data as of 2025-12-31
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Built 2026-10-17 (17 October 2026)

Germantown Dam Weather Records (USC00333120)

Record envelope, standing records and threshold days for Germantown Dam (USC00333120), Ohio, United States, with 79 years of record.

Key Facts for Germantown Dam

  • Germantown Dam (USC00333120) is a weather station in Ohio, United States at 39.64 latitude and -84.40 longitude, 225 m (738 ft) above sea level.
  • The station reports from 1948 to 2026, 79 years of record.
  • 0 records set at Germantown Dam still stand.
  • Records are tracked for no element yet: an element needs 30 years of data to be eligible.

About the Station

  • Location: Ohio, United States, 39.64 latitude, -84.40 longitude.
  • Elevation: 225 m (738 ft).
  • Period of record: 1948 to 2026, 79 years.
  • Eligible elements: none yet.

Daily Record Envelope and 2026

0 days at or beyond a record
Daily record high and record low at Germantown Dam, with 2026 drawn through them The band shows the record high and record low for each calendar day at Germantown Dam. The lines show the 2026 daily maximum and minimum. 0 days in 2026 matched or passed a record. Temperatures are in degrees Celsius. 000111 JanFebMarAprMayJunJulAugSepOctNovDec
The band shows the record high and record low for each calendar day at Germantown 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 Germantown Dam, with 2026 drawn through them
MonthHighest record highLowest record low2026 highest maximum2026 lowest minimum
Jann/an/an/an/a
Febn/an/an/an/a
Marn/an/an/an/a
Aprn/an/an/an/a
Mayn/an/an/an/a
Junn/an/an/an/a
Juln/an/an/an/a
Augn/an/an/an/a
Sepn/an/an/an/a
Octn/an/an/an/a
Novn/an/an/an/a
Decn/an/an/an/a

Which Years Hold Standing Records

0 standing records
Standing records at Germantown Dam by the year they were set 0 records at Germantown Dam still stand. 00000000000
0 records at Germantown Dam still stand.
Standing records at Germantown Dam by the year they were set
Year setStanding records

Wettest Day of Each Month

Jun: 100.1 mm (3.9 in)
Record daily precipitation for each month at Germantown Dam The wettest day on record for each calendar month at Germantown Dam. The most was 100.1 mm (3.9 in) on 19 June 2021. 050100150 Jan: 96.0 mm (3.8 in), 4 January 1949 Jan Feb: 51.6 mm (2.0 in), 16 February 2025 Feb Mar: 80.0 mm (3.1 in), 4 March 2023 Mar Apr: 58.7 mm (2.3 in), 20 April 2011 Apr May: 94.2 mm (3.7 in), 19 May 2020 May Jun: 100.1 mm (3.9 in), 19 June 2021 Jun Jul: 69.9 mm (2.8 in), 30 July 2024 Jul Aug: 81.3 mm (3.2 in), 2 August 2024 Aug Sep: 89.7 mm (3.5 in), 26 September 2011 Sep Oct: 83.8 mm (3.3 in), 28 October 2015 Oct Nov: 68.8 mm (2.7 in), 5 November 1948 Nov Dec: 61.2 mm (2.4 in), 22 December 2013 Dec
The wettest day on record for each calendar month at Germantown Dam. The most was 100.1 mm (3.9 in) on 19 June 2021.
Record daily precipitation for each month at Germantown Dam
MonthRecord daily precipitation (mm)Date
Jan96.0 mm (3.8 in)4 January 1949
Feb51.6 mm (2.0 in)16 February 2025
Mar80.0 mm (3.1 in)4 March 2023
Apr58.7 mm (2.3 in)20 April 2011
May94.2 mm (3.7 in)19 May 2020
Jun100.1 mm (3.9 in)19 June 2021
Jul69.9 mm (2.8 in)30 July 2024
Aug81.3 mm (3.2 in)2 August 2024
Sep89.7 mm (3.5 in)26 September 2011
Oct83.8 mm (3.3 in)28 October 2015
Nov68.8 mm (2.7 in)5 November 1948
Dec61.2 mm (2.4 in)22 December 2013

Latest Records

0

No records were set at this station in the latest data.

Extremes by Year

1948 to 2026
Yearly extremes at Germantown Dam: the record and the median year
MeasureRecordYear of the recordMedian yearYears with a value
Wettest day (Rx1day)100.1 mm (3.9 in)202165.2 mm (2.6 in)20
Wettest five days (Rx5day)151.2 mm (6.0 in)202499.1 mm (3.9 in)20
Longest dry spell (CDD)35 days202417 days20

Wettest day (Rx1day)

Wettest day (Rx1day) at Germantown Dam by year The wettest day of the year at Germantown Dam, 1948 to 2026. The record is 100.1 mm (3.9 in) in 2021, marked on the chart; the median year is 65.2 mm (2.6 in). 4060801001201960198020002020Record: 100.1 mm (3.9 in) in 2021
The wettest day of the year at Germantown Dam, 1948 to 2026. The record is 100.1 mm (3.9 in) in 2021, marked on the chart; the median year is 65.2 mm (2.6 in).
Wettest day (Rx1day) at Germantown Dam by year
YearWettest day (Rx1day)
194868.8 mm (2.7 in)
194996.0 mm (3.8 in)
195064.5 mm (2.5 in)
195145.2 mm (1.8 in)
201189.7 mm (3.5 in)
201254.6 mm (2.1 in)
201361.2 mm (2.4 in)
201454.1 mm (2.1 in)
201583.8 mm (3.3 in)
201649.0 mm (1.9 in)
201765.8 mm (2.6 in)
201862.5 mm (2.5 in)
201950.3 mm (2.0 in)
202094.2 mm (3.7 in)
2021100.1 mm (3.9 in)
202260.5 mm (2.4 in)
202380.0 mm (3.1 in)
202481.3 mm (3.2 in)
202555.9 mm (2.2 in)
202675.4 mm (3.0 in)

Wettest five days (Rx5day)

Wettest five days (Rx5day) at Germantown Dam by year The wettest five days of the year at Germantown Dam, 1948 to 2026. The record is 151.2 mm (6.0 in) in 2024, marked on the chart; the median year is 99.1 mm (3.9 in). 50751001251501751960198020002020Record: 151.2 mm (6.0 in) in 2024
The wettest five days of the year at Germantown Dam, 1948 to 2026. The record is 151.2 mm (6.0 in) in 2024, marked on the chart; the median year is 99.1 mm (3.9 in).
Wettest five days (Rx5day) at Germantown Dam by year
YearWettest five days (Rx5day)
194885.6 mm (3.4 in)
1949102.6 mm (4.0 in)
195095.2 mm (3.7 in)
195159.5 mm (2.3 in)
201187.8 mm (3.5 in)
201272.2 mm (2.8 in)
2013121.8 mm (4.8 in)
201492.9 mm (3.7 in)
2015111.0 mm (4.4 in)
201695.5 mm (3.8 in)
201793.0 mm (3.7 in)
2018146.1 mm (5.8 in)
201984.3 mm (3.3 in)
2020118.4 mm (4.7 in)
2021120.4 mm (4.7 in)
202283.8 mm (3.3 in)
2023118.8 mm (4.7 in)
2024151.2 mm (6.0 in)
2025129.5 mm (5.1 in)
2026118.2 mm (4.7 in)

Longest dry spell (CDD)

Longest dry spell (CDD) at Germantown Dam by year The longest dry spell of the year at Germantown Dam, 1948 to 2026. The record is 35 days in 2024, marked on the chart; the median year is 17 days. 102030401960198020002020Record: 35 days in 2024
The longest dry spell of the year at Germantown Dam, 1948 to 2026. The record is 35 days in 2024, marked on the chart; the median year is 17 days.
Longest dry spell (CDD) at Germantown Dam by year
YearLongest dry spell (CDD)
194813 days
194914 days
195011 days
195111 days
201113 days
201215 days
201315 days
201416 days
201517 days
201617 days
201717 days
201812 days
201920 days
202018 days
202123 days
202218 days
202322 days
202435 days
202521 days
202613 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.

Download the Data

  • Data for Germantown Dam standing records by year: CSV or JSON. Field meanings are on the data page.
  • Data for Germantown 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 (2025-12-31).