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Data as of 2025-12-31
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Built 2026-10-19 (19 October 2026)

Germantown Dam Threshold Days by Year (USC00333120)

4 fixed thresholds counted per year at Germantown Dam (USC00333120): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Germantown Dam Thresholds

  • Germantown Dam: days with 10 mm (0.39 in) or more of precipitation in 12 years, most in 2017 with 44.
  • Germantown Dam: days with 25 mm (0.98 in) or more of precipitation in 12 years, most in 2019 with 16.
  • Germantown Dam: days with 50 mm (1.97 in) or more of precipitation in 11 years, most in 2015 with 3.
  • Germantown Dam: days with 100 mm (3.94 in) or more of precipitation in 1 years, most in 2021 with 1.
  • 4 fixed thresholds have at least one qualifying day at Germantown Dam.
12 years with a qualifying day
Days with 10 mm (0.39 in) or more of precipitation per year at Germantown Dam Days per year at Germantown Dam with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 44 in 2017. 02040602014: 352015: 422016: 352017: 442018: 422019: 322020: 372021: 392022: 342023: 362024: 442025: 41201420162018202020222024
Days per year at Germantown Dam with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 44 in 2017.
Days with 10 mm (0.39 in) or more of precipitation per year at Germantown Dam
YearDaysDecade average
20143538.3
20154238.3
20163538.3
20174438.3
20184238.3
20193238.3
20203738.5
20213938.5
20223438.5
20233638.5
20244438.5
20254138.5
First to last qualifying date each year at Germantown Dam For each year, a bar from the first to the last day at Germantown Dam meeting 10 mm (0.39 in). 2014: 6 January 2014 to 6 December 20142015: 3 January 2015 to 29 December 20152016: 10 January 2016 to 27 December 20162017: 4 January 2017 to 23 December 20172018: 12 January 2018 to 28 December 20182019: 1 January 2019 to 30 December 20192020: 3 January 2020 to 31 December 20202021: 2 January 2021 to 29 December 20212022: 2 January 2022 to 31 December 20222023: 13 January 2023 to 17 December 20232024: 9 January 2024 to 31 December 20242025: 6 January 2025 to 29 December 2025201420162018202020222024JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Germantown Dam meeting 10 mm (0.39 in).
First to last qualifying date each year at Germantown Dam
YearFirst dateLast date
20142014-01-062014-12-06
20152015-01-032015-12-29
20162016-01-102016-12-27
20172017-01-042017-12-23
20182018-01-122018-12-28
20192019-01-012019-12-30
20202020-01-032020-12-31
20212021-01-022021-12-29
20222022-01-022022-12-31
20232023-01-132023-12-17
20242024-01-092024-12-31
20252025-01-062025-12-29

Every Fixed Threshold

Fixed thresholds at Germantown Dam
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
10 mm (0.39 in): Days with 10 mm or more rain1244201741
25 mm (0.98 in): Days with 25 mm or more rain1216201913
50 mm (1.97 in): Days with 50 mm or more rain11320153
100 mm (3.94 in): Days with 100 mm or more rain1120211

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 2014.

Download the Data

  • 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 2026-10-17 (17 October 2026). Threshold counts are computed by this site.

Data as of . Last revised (2025-12-31).