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Data as of 2025-12-31
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Built 2026-10-15 (15 October 2026)

Loudoun Bridge Threshold Days by Year

4 fixed thresholds counted per year at Loudoun Bridge (ASN00041339): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Loudoun Bridge Thresholds

  • Loudoun Bridge: days with 10 mm (0.39 in) or more of precipitation in 28 years, most in 2022 with 33.
  • Loudoun Bridge: days with 25 mm (0.98 in) or more of precipitation in 28 years, most in 1996 with 12.
  • Loudoun Bridge: days with 50 mm (1.97 in) or more of precipitation in 22 years, most in 2011 with 6.
  • Loudoun Bridge: days with 100 mm (3.94 in) or more of precipitation in 4 years, most in 1996 with 1.
  • 4 fixed thresholds have at least one qualifying day at Loudoun Bridge.
28 years with a qualifying day
Days with 10 mm (0.39 in) or more of precipitation per year at Loudoun Bridge Days per year at Loudoun Bridge with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 33 in 2022. 0102030401994: 131995: 231996: 301997: 211998: 161999: 192000: 132002: 102003: 162004: 182005: 182006: 112007: 152008: 202009: 182011: 302012: 172013: 192014: 172015: 242016: 172017: 222018: 172019: 72020: 252021: 302022: 332024: 241994199720002004200720112014201720202024
Days per year at Loudoun Bridge with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 33 in 2022.
Days with 10 mm (0.39 in) or more of precipitation per year at Loudoun Bridge
YearDaysDecade average
19941320.3
19952320.3
19963020.3
19972120.3
19981620.3
19991920.3
20001315.4
20021015.4
20031615.4
20041815.4
20051815.4
20061115.4
20071515.4
20082015.4
20091815.4
20113018.9
20121718.9
20131918.9
20141718.9
20152418.9
20161718.9
20172218.9
20181718.9
2019718.9
20202528
20213028
20223328
20242428
First to last qualifying date each year at Loudoun Bridge For each year, a bar from the first to the last day at Loudoun Bridge meeting 10 mm (0.39 in). 1994: 3 February 1994 to 19 December 19941995: 19 January 1995 to 24 December 19951996: 2 January 1996 to 31 December 19961997: 14 February 1997 to 27 December 19971998: 29 January 1998 to 26 November 19981999: 2 January 1999 to 12 December 19992000: 3 January 2000 to 29 December 20002002: 8 February 2002 to 11 December 20022003: 23 January 2003 to 13 December 20032004: 11 January 2004 to 26 December 20042005: 7 January 2005 to 9 December 20052006: 5 January 2006 to 28 December 20062007: 27 January 2007 to 23 December 20072008: 5 February 2008 to 31 December 20082009: 24 January 2009 to 30 December 20092011: 3 January 2011 to 20 December 20112012: 25 January 2012 to 29 December 20122013: 11 January 2013 to 30 November 20132014: 23 January 2014 to 28 December 20142015: 2 January 2015 to 24 December 20152016: 5 January 2016 to 21 December 20162017: 3 January 2017 to 27 December 20172018: 2 January 2018 to 17 December 20182019: 8 March 2019 to 3 June 20192020: 17 January 2020 to 23 December 20202021: 7 January 2021 to 23 December 20212022: 19 January 2022 to 8 December 20222024: 9 January 2024 to 30 December 20241994199820032007201220162020JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Loudoun Bridge meeting 10 mm (0.39 in).
First to last qualifying date each year at Loudoun Bridge
YearFirst dateLast date
19941994-02-031994-12-19
19951995-01-191995-12-24
19961996-01-021996-12-31
19971997-02-141997-12-27
19981998-01-291998-11-26
19991999-01-021999-12-12
20002000-01-032000-12-29
20022002-02-082002-12-11
20032003-01-232003-12-13
20042004-01-112004-12-26
20052005-01-072005-12-09
20062006-01-052006-12-28
20072007-01-272007-12-23
20082008-02-052008-12-31
20092009-01-242009-12-30
20112011-01-032011-12-20
20122012-01-252012-12-29
20132013-01-112013-11-30
20142014-01-232014-12-28
20152015-01-022015-12-24
20162016-01-052016-12-21
20172017-01-032017-12-27
20182018-01-022018-12-17
20192019-03-082019-06-03
20202020-01-172020-12-23
20212021-01-072021-12-23
20222022-01-192022-12-08
20242024-01-092024-12-30

Every Fixed Threshold

Fixed thresholds at Loudoun Bridge
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
10 mm (0.39 in): Days with 10 mm or more rain2833202224
25 mm (0.98 in): Days with 25 mm or more rain2812199611
50 mm (1.97 in): Days with 50 mm or more rain22620111
100 mm (3.94 in): Days with 100 mm or more rain4119961

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1994.

Download the Data

  • Data for Loudoun Bridge 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). Threshold counts are computed by this site.

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