Daily records
Page built 2026-10-19
Data as of 2025-12-31
Search
Built 2026-10-19 (19 October 2026)

The Overflow Threshold Days by Year (ASN00040497)

4 fixed thresholds counted per year at The Overflow (ASN00040497): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for The Overflow Thresholds

  • The Overflow: days with 10 mm (0.39 in) or more of precipitation in 20 years, most in 1999 with 38.
  • The Overflow: days with 25 mm (0.98 in) or more of precipitation in 20 years, most in 1967 with 18.
  • The Overflow: days with 50 mm (1.97 in) or more of precipitation in 18 years, most in 1996 with 6.
  • The Overflow: days with 100 mm (3.94 in) or more of precipitation in 4 years, most in 2004 with 2.
  • 4 fixed thresholds have at least one qualifying day at The Overflow.
20 years with a qualifying day
Days with 10 mm (0.39 in) or more of precipitation per year at The Overflow Days per year at The Overflow with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 38 in 1999. 0102030401965: 201966: 241967: 271968: 251990: 151991: 171992: 311993: 141994: 81995: 291996: 261997: 241998: 231999: 382000: 162001: 232002: 172003: 242004: 242005: 181965196719901992199419961998200020022004
Days per year at The Overflow with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 38 in 1999.
Days with 10 mm (0.39 in) or more of precipitation per year at The Overflow
YearDaysDecade average
19652024
19662424
19672724
19682524
19901522.5
19911722.5
19923122.5
19931422.5
1994822.5
19952922.5
19962622.5
19972422.5
19982322.5
19993822.5
20001620.3
20012320.3
20021720.3
20032420.3
20042420.3
20051820.3
First to last qualifying date each year at The Overflow For each year, a bar from the first to the last day at The Overflow meeting 10 mm (0.39 in). 1965: 3 January 1965 to 19 December 19651966: 23 January 1966 to 30 December 19661967: 1 January 1967 to 6 December 19671968: 10 January 1968 to 5 December 19681990: 16 January 1990 to 22 December 19901991: 22 January 1991 to 22 December 19911992: 1 January 1992 to 29 December 19921993: 6 January 1993 to 9 December 19931994: 20 January 1994 to 26 December 19941995: 3 January 1995 to 29 December 19951996: 4 January 1996 to 19 December 19961997: 27 January 1997 to 16 December 19971998: 30 January 1998 to 24 December 19981999: 2 January 1999 to 28 December 19992000: 16 January 2000 to 29 December 20002001: 18 January 2001 to 31 December 20012002: 1 January 2002 to 28 December 20022003: 4 February 2003 to 7 December 20032004: 15 January 2004 to 28 December 20042005: 7 January 2005 to 17 December 20051965196819921995199820012004JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at The Overflow meeting 10 mm (0.39 in).
First to last qualifying date each year at The Overflow
YearFirst dateLast date
19651965-01-031965-12-19
19661966-01-231966-12-30
19671967-01-011967-12-06
19681968-01-101968-12-05
19901990-01-161990-12-22
19911991-01-221991-12-22
19921992-01-011992-12-29
19931993-01-061993-12-09
19941994-01-201994-12-26
19951995-01-031995-12-29
19961996-01-041996-12-19
19971997-01-271997-12-16
19981998-01-301998-12-24
19991999-01-021999-12-28
20002000-01-162000-12-29
20012001-01-182001-12-31
20022002-01-012002-12-28
20032003-02-042003-12-07
20042004-01-152004-12-28
20052005-01-072005-12-17

Every Fixed Threshold

Fixed thresholds at The Overflow
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
10 mm (0.39 in): Days with 10 mm or more rain2038199918
25 mm (0.98 in): Days with 25 mm or more rain201819675
50 mm (1.97 in): Days with 50 mm or more rain18619961
100 mm (3.94 in): Days with 100 mm or more rain4220042

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1965.

Download the Data

  • Data for The Overflow 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).