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Built 2026-10-18 (18 October 2026)

Center City Threshold Days by Year

5 fixed thresholds counted per year at Center City (USC00411580): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Center City Thresholds

  • Center City: days with 10 mm (0.39 in) or more of precipitation in 48 years, most in 1994 with 37.
  • Center City: days with 25 mm (0.98 in) or more of precipitation in 48 years, most in 2007 with 16.
  • Center City: days with 50 mm (1.97 in) or more of precipitation in 44 years, most in 1973 with 6.
  • Center City: days with 100 mm (3.94 in) or more of precipitation in 8 years, most in 1985 with 2.
  • 5 fixed thresholds have at least one qualifying day at Center City.
48 years with a qualifying day
Days with 10 mm (0.39 in) or more of precipitation per year at Center City Days per year at Center City with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 37 in 1994. 0102030401964: 231965: 241966: 141967: 231968: 241969: 251970: 201971: 251972: 151973: 331974: 241975: 201976: 221977: 141978: 211979: 241980: 231981: 211982: 241983: 191984: 191985: 211986: 281987: 241988: 161989: 201990: 281991: 321992: 291993: 271994: 371995: 261996: 231997: 291998: 251999: 172000: 232001: 272002: 292003: 252004: 362005: 152006: 162007: 362008: 142009: 302010: 192011: 171964196919741979198419891994199920042009
Days per year at Center City with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 37 in 1994.
Days with 10 mm (0.39 in) or more of precipitation per year at Center City
YearDaysDecade average
19642322.2
19652422.2
19661422.2
19672322.2
19682422.2
19692522.2
19702021.8
19712521.8
19721521.8
19733321.8
19742421.8
19752021.8
19762221.8
19771421.8
19782121.8
19792421.8
19802321.5
19812121.5
19822421.5
19831921.5
19841921.5
19852121.5
19862821.5
19872421.5
19881621.5
19892021.5
19902827.3
19913227.3
19922927.3
19932727.3
19943727.3
19952627.3
19962327.3
19972927.3
19982527.3
19991727.3
20002325.1
20012725.1
20022925.1
20032525.1
20043625.1
20051525.1
20061625.1
20073625.1
20081425.1
20093025.1
20101918
20111718
First to last qualifying date each year at Center City For each year, a bar from the first to the last day at Center City meeting 10 mm (0.39 in). 1964: 16 January 1964 to 10 December 19641965: 3 January 1965 to 18 December 19651966: 10 February 1966 to 17 September 19661967: 20 February 1967 to 15 December 19671968: 9 January 1968 to 1 December 19681969: 14 February 1969 to 29 December 19691970: 1 February 1970 to 12 October 19701971: 26 February 1971 to 10 December 19711972: 1 January 1972 to 13 November 19721973: 2 January 1973 to 20 November 19731974: 19 January 1974 to 26 December 19741975: 1 February 1975 to 25 December 19751976: 24 March 1976 to 14 December 19761977: 13 January 1977 to 29 November 19771978: 9 February 1978 to 31 December 19781979: 11 January 1979 to 28 December 19791980: 22 January 1980 to 9 December 19801981: 5 February 1981 to 8 November 19811982: 14 January 1982 to 27 December 19821983: 1 January 1983 to 23 November 19831984: 9 January 1984 to 31 December 19841985: 23 February 1985 to 27 November 19851986: 3 February 1986 to 22 December 19861987: 18 January 1987 to 20 December 19871988: 18 February 1988 to 10 December 19881989: 28 January 1989 to 31 December 19891990: 1 February 1990 to 23 November 19901991: 10 January 1991 to 21 December 19911992: 18 January 1992 to 15 December 19921993: 1 January 1993 to 22 December 19931994: 13 January 1994 to 29 December 19941995: 13 January 1995 to 18 December 19951996: 18 January 1996 to 15 December 19961997: 7 January 1997 to 21 December 19971998: 6 January 1998 to 11 December 19981999: 29 January 1999 to 12 December 19992000: 2 February 2000 to 26 December 20002001: 11 January 2001 to 16 December 20012002: 31 January 2002 to 31 December 20022003: 13 January 2003 to 18 November 20032004: 17 January 2004 to 23 November 20042005: 28 January 2005 to 29 August 20052006: 23 January 2006 to 30 December 20062007: 5 January 2007 to 25 November 20072008: 3 March 2008 to 6 October 20082009: 9 February 2009 to 8 December 20092010: 16 January 2010 to 25 December 20102011: 9 January 2011 to 5 December 201119641970197619821988199420002006JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Center City meeting 10 mm (0.39 in).
First to last qualifying date each year at Center City
YearFirst dateLast date
19641964-01-161964-12-10
19651965-01-031965-12-18
19661966-02-101966-09-17
19671967-02-201967-12-15
19681968-01-091968-12-01
19691969-02-141969-12-29
19701970-02-011970-10-12
19711971-02-261971-12-10
19721972-01-011972-11-13
19731973-01-021973-11-20
19741974-01-191974-12-26
19751975-02-011975-12-25
19761976-03-241976-12-14
19771977-01-131977-11-29
19781978-02-091978-12-31
19791979-01-111979-12-28
19801980-01-221980-12-09
19811981-02-051981-11-08
19821982-01-141982-12-27
19831983-01-011983-11-23
19841984-01-091984-12-31
19851985-02-231985-11-27
19861986-02-031986-12-22
19871987-01-181987-12-20
19881988-02-181988-12-10
19891989-01-281989-12-31
19901990-02-011990-11-23
19911991-01-101991-12-21
19921992-01-181992-12-15
19931993-01-011993-12-22
19941994-01-131994-12-29
19951995-01-131995-12-18
19961996-01-181996-12-15
19971997-01-071997-12-21
19981998-01-061998-12-11
19991999-01-291999-12-12
20002000-02-022000-12-26
20012001-01-112001-12-16
20022002-01-312002-12-31
20032003-01-132003-11-18
20042004-01-172004-11-23
20052005-01-282005-08-29
20062006-01-232006-12-30
20072007-01-052007-11-25
20082008-03-032008-10-06
20092009-02-092009-12-08
20102010-01-162010-12-25
20112011-01-092011-12-05

Every Fixed Threshold

Fixed thresholds at Center City
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
10 mm (0.39 in): Days with 10 mm or more rain4837199417
25 mm (0.98 in): Days with 25 mm or more rain4816200710
50 mm (1.97 in): Days with 50 mm or more rain44619733
100 mm (3.94 in): Days with 100 mm or more rain8219851
10 cm (3.9 in): Days with 10 cm or more snowfall4219731

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1964.

Download the Data

  • Data for Center City 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).