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Built 2026-10-19 (19 October 2026)

Princeton 1 SE Threshold Days by Year (USC00156580)

17 fixed thresholds counted per year at Princeton 1 SE (USC00156580): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Princeton 1 SE Thresholds

  • Princeton 1 SE: days with 10 mm (0.39 in) or more of precipitation in 53 years, most in 1975 with 54.
  • Princeton 1 SE: days with 25 mm (0.98 in) or more of precipitation in 53 years, most in 2011 with 28.
  • Princeton 1 SE: nights with a minimum temperature at or below 0 C (32 F) in 52 years, most in 1978 with 102.
  • Princeton 1 SE: nights with a minimum temperature at or below -10 C (14 F) in 52 years, most in 1977 with 31.
  • 17 fixed thresholds have at least one qualifying day at Princeton 1 SE.
49 years with a qualifying day
Days at or above 30 C (86 F) per year at Princeton 1 SE Days per year at Princeton 1 SE with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 123 in 1998. 0501001501965: 891966: 731967: 471968: 881969: 901970: 871971: 781972: 801973: 861974: 571975: 771976: 541977: 941978: 961979: 491980: 1001981: 661983: 991984: 801985: 691988: 901989: 661990: 751991: 971992: 461994: 771995: 921996: 771997: 791998: 1231999: 1072000: 882001: 882002: 1012003: 612004: 642005: 1022006: 892007: 1222008: 1112009: 582010: 1222011: 1012012: 1092013: 672014: 632015: 722017: 642019: 841965197019751980198819941999200420092014
Days per year at Princeton 1 SE with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 123 in 1998.
Days at or above 30 C (86 F) per year at Princeton 1 SE
YearDaysDecade average
19658977.4
19667377.4
19674777.4
19688877.4
19699077.4
19708775.8
19717875.8
19728075.8
19738675.8
19745775.8
19757775.8
19765475.8
19779475.8
19789675.8
19794975.8
198010081.4
19816681.4
19839981.4
19848081.4
19856981.4
19889081.4
19896681.4
19907585.9
19919785.9
19924685.9
19947785.9
19959285.9
19967785.9
19977985.9
199812385.9
199910785.9
20008888.4
20018888.4
200210188.4
20036188.4
20046488.4
200510288.4
20068988.4
200712288.4
200811188.4
20095888.4
201012285.3
201110185.3
201210985.3
20136785.3
20146385.3
20157285.3
20176485.3
20198485.3
First to last qualifying date each year at Princeton 1 SE For each year, a bar from the first to the last day at Princeton 1 SE meeting 30 C (86 F). 1965: 23 April 1965 to 18 October 19651966: 6 May 1966 to 13 September 19661967: 9 April 1967 to 4 October 19671968: 2 May 1968 to 12 October 19681969: 5 May 1969 to 4 October 19691970: 30 April 1970 to 24 September 19701971: 19 April 1971 to 3 October 19711972: 21 May 1972 to 5 October 19721973: 3 June 1973 to 4 October 19731974: 18 May 1974 to 12 September 19741975: 19 May 1975 to 13 October 19751976: 8 June 1976 to 19 September 19761977: 15 April 1977 to 12 September 19771978: 23 May 1978 to 21 September 19781979: 10 May 1979 to 6 September 19791980: 23 April 1980 to 10 October 19801981: 5 June 1981 to 30 September 19811983: 10 June 1983 to 4 October 19831984: 2 June 1984 to 22 September 19841985: 13 May 1985 to 10 September 19851988: 14 May 1988 to 23 September 19881989: 26 April 1989 to 13 October 19891990: 25 April 1990 to 28 September 19901991: 15 May 1991 to 18 September 19911992: 15 April 1992 to 21 September 19921994: 27 April 1994 to 16 September 19941995: 10 April 1995 to 12 October 19951996: 9 May 1996 to 12 September 19961997: 18 May 1997 to 12 October 19971998: 13 May 1998 to 7 October 19981999: 18 May 1999 to 13 October 19992000: 11 May 2000 to 5 October 20002001: 7 April 2001 to 23 September 20012002: 18 April 2002 to 3 October 20022003: 17 June 2003 to 13 September 20032004: 8 May 2004 to 22 September 20042005: 11 May 2005 to 20 October 20052006: 13 April 2006 to 4 October 20062007: 30 April 2007 to 9 October 20072008: 23 April 2008 to 12 October 20082009: 27 May 2009 to 12 September 20092010: 14 April 2010 to 16 October 20102011: 9 April 2011 to 16 October 20112012: 2 April 2012 to 25 September 20122013: 17 April 2013 to 5 October 20132014: 22 May 2014 to 2 October 20142015: 8 May 2015 to 19 September 20152017: 29 April 2017 to 28 September 20172019: 18 May 2019 to 5 October 20191965197219791989199720042011JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Princeton 1 SE meeting 30 C (86 F).
First to last qualifying date each year at Princeton 1 SE
YearFirst dateLast date
19651965-04-231965-10-18
19661966-05-061966-09-13
19671967-04-091967-10-04
19681968-05-021968-10-12
19691969-05-051969-10-04
19701970-04-301970-09-24
19711971-04-191971-10-03
19721972-05-211972-10-05
19731973-06-031973-10-04
19741974-05-181974-09-12
19751975-05-191975-10-13
19761976-06-081976-09-19
19771977-04-151977-09-12
19781978-05-231978-09-21
19791979-05-101979-09-06
19801980-04-231980-10-10
19811981-06-051981-09-30
19831983-06-101983-10-04
19841984-06-021984-09-22
19851985-05-131985-09-10
19881988-05-141988-09-23
19891989-04-261989-10-13
19901990-04-251990-09-28
19911991-05-151991-09-18
19921992-04-151992-09-21
19941994-04-271994-09-16
19951995-04-101995-10-12
19961996-05-091996-09-12
19971997-05-181997-10-12
19981998-05-131998-10-07
19991999-05-181999-10-13
20002000-05-112000-10-05
20012001-04-072001-09-23
20022002-04-182002-10-03
20032003-06-172003-09-13
20042004-05-082004-09-22
20052005-05-112005-10-20
20062006-04-132006-10-04
20072007-04-302007-10-09
20082008-04-232008-10-12
20092009-05-272009-09-12
20102010-04-142010-10-16
20112011-04-092011-10-16
20122012-04-022012-09-25
20132013-04-172013-10-05
20142014-05-222014-10-02
20152015-05-082015-09-19
20172017-04-292017-09-28
20192019-05-182019-10-05

Every Fixed Threshold

Fixed thresholds at Princeton 1 SE
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days49123199884
35 C (95 F): Days434419802
40 C (104 F): Days5420074
90 F (32.2 C): Days4987201229
100 F (37.8 C): Days1615200712
0 C (32 F): Ice days (max493319783
0 C (32 F): Frost days (min52102197882
-10 C (14 F): Days with min523119777
-20 C (-4 F): Days with min14419703
20 C (68 F): Tropical nights (min5283199143
25 C (77 F): Days with min27720112
10 mm (0.39 in): Days with 10 mm or more rain5354197541
25 mm (0.98 in): Days with 25 mm or more rain5328201120
50 mm (1.97 in): Days with 50 mm or more rain51820133
100 mm (3.94 in): Days with 100 mm or more rain12119691
10 cm (3.9 in): Days with 10 cm or more snowfall22419782
25 cm (9.8 in): Days with 25 cm or more snowfall3220152

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 Princeton 1 SE 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).