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Built 2026-10-18 (18 October 2026)

Stamford 1 Threshold Days by Year

19 fixed thresholds counted per year at Stamford 1 (USC00418583): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Stamford 1 Thresholds

  • Stamford 1: days with 10 mm (0.39 in) or more of precipitation in 95 years, most in 1941 with 33.
  • Stamford 1: days with 25 mm (0.98 in) or more of precipitation in 95 years, most in 1941 with 15.
  • Stamford 1: days with 50 mm (1.97 in) or more of precipitation in 74 years, most in 1932 with 5.
  • Stamford 1: nights with a minimum temperature at or below 0 C (32 F) in 47 years, most in 1912 with 97.
  • 19 fixed thresholds have at least one qualifying day at Stamford 1.
44 years with a qualifying day
Days at or above 30 C (86 F) per year at Stamford 1 Days per year at Stamford 1 with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 169 in 2011. 0501001502001912: 1221913: 1021981: 1471985: 1371986: 1391987: 1381989: 1521990: 1241991: 1421992: 1361993: 1421994: 1631995: 1471996: 1561997: 1261998: 1621999: 1362000: 1502001: 1392002: 1322003: 1412004: 1272005: 1362006: 1562007: 1192008: 1422009: 1262010: 1342011: 1692012: 1522013: 1442014: 1422015: 1452016: 1472017: 1552018: 1492019: 1482020: 1462021: 1402022: 1662023: 1542024: 1662025: 1642026: 176191219871993199820032008201320182023
Days per year at Stamford 1 with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 169 in 2011.
Days at or above 30 C (86 F) per year at Stamford 1
YearDaysDecade average
1912122112
1913102112
1981147142.6
1985137142.6
1986139142.6
1987138142.6
1989152142.6
1990124143.4
1991142143.4
1992136143.4
1993142143.4
1994163143.4
1995147143.4
1996156143.4
1997126143.4
1998162143.4
1999136143.4
2000150136.8
2001139136.8
2002132136.8
2003141136.8
2004127136.8
2005136136.8
2006156136.8
2007119136.8
2008142136.8
2009126136.8
2010134148.5
2011169148.5
2012152148.5
2013144148.5
2014142148.5
2015145148.5
2016147148.5
2017155148.5
2018149148.5
2019148148.5
2020146158.9
2021140158.9
2022166158.9
2023154158.9
2024166158.9
2025164158.9
2026176158.9
First to last qualifying date each year at Stamford 1 For each year, a bar from the first to the last day at Stamford 1 meeting 30 C (86 F). 1912: 19 March 1912 to 7 October 19121913: 15 April 1913 to 8 October 19131981: 20 February 1981 to 18 November 19811985: 3 April 1985 to 25 October 19851986: 19 February 1986 to 4 October 19861987: 12 April 1987 to 4 November 19871989: 4 March 1989 to 15 November 19891990: 15 April 1990 to 21 October 19901991: 5 March 1991 to 25 October 19911992: 15 March 1992 to 1 November 19921993: 10 March 1993 to 17 October 19931994: 6 March 1994 to 4 November 19941995: 20 March 1995 to 28 October 19951996: 11 February 1996 to 20 November 19961997: 21 March 1997 to 9 October 19971998: 23 March 1998 to 29 October 19981999: 7 April 1999 to 29 October 19992000: 15 February 2000 to 5 October 20002001: 2 April 2001 to 23 October 20012002: 13 March 2002 to 4 October 20022003: 12 March 2003 to 4 November 20032004: 20 March 2004 to 24 October 20042005: 9 April 2005 to 8 November 20052006: 3 January 2006 to 9 November 20062007: 4 May 2007 to 8 November 20072008: 25 March 2008 to 11 October 20082009: 25 February 2009 to 15 October 20092010: 31 March 2010 to 1 November 20102011: 28 February 2011 to 26 October 20112012: 26 March 2012 to 9 November 20122013: 16 March 2013 to 12 October 20132014: 12 March 2014 to 28 October 20142015: 25 March 2015 to 16 October 20152016: 31 March 2016 to 2 November 20162017: 12 February 2017 to 18 November 20172018: 11 March 2018 to 6 October 20182019: 30 March 2019 to 24 October 20192020: 26 March 2020 to 23 October 20202021: 7 April 2021 to 27 December 20212022: 26 March 2022 to 24 October 20222023: 22 February 2023 to 9 November 20232024: 22 February 2024 to 31 October 20242025: 4 February 2025 to 21 December 20252026: 18 February 2026 to 15 October 202619121989199520012007201320192025JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Stamford 1 meeting 30 C (86 F).
First to last qualifying date each year at Stamford 1
YearFirst dateLast date
19121912-03-191912-10-07
19131913-04-151913-10-08
19811981-02-201981-11-18
19851985-04-031985-10-25
19861986-02-191986-10-04
19871987-04-121987-11-04
19891989-03-041989-11-15
19901990-04-151990-10-21
19911991-03-051991-10-25
19921992-03-151992-11-01
19931993-03-101993-10-17
19941994-03-061994-11-04
19951995-03-201995-10-28
19961996-02-111996-11-20
19971997-03-211997-10-09
19981998-03-231998-10-29
19991999-04-071999-10-29
20002000-02-152000-10-05
20012001-04-022001-10-23
20022002-03-132002-10-04
20032003-03-122003-11-04
20042004-03-202004-10-24
20052005-04-092005-11-08
20062006-01-032006-11-09
20072007-05-042007-11-08
20082008-03-252008-10-11
20092009-02-252009-10-15
20102010-03-312010-11-01
20112011-02-282011-10-26
20122012-03-262012-11-09
20132013-03-162013-10-12
20142014-03-122014-10-28
20152015-03-252015-10-16
20162016-03-312016-11-02
20172017-02-122017-11-18
20182018-03-112018-10-06
20192019-03-302019-10-24
20202020-03-262020-10-23
20212021-04-072021-12-27
20222022-03-262022-10-24
20232023-02-222023-11-09
20242024-02-222024-10-31
20252025-02-042025-12-21
20262026-02-182026-10-15

Every Fixed Threshold

Fixed thresholds at Stamford 1
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days441692011176
35 C (95 F): Days441172011119
40 C (104 F): Days3747201117
45 C (113 F): Days3219941
90 F (32.2 C): Days441432011151
100 F (37.8 C): Days4396201173
110 F (43.3 C): Days11619942
0 C (32 F): Ice days (max421319123
0 C (32 F): Frost days (min4797191231
-10 C (14 F): Days with min371319965
-20 C (-4 F): Days with min1119851
20 C (68 F): Tropical nights (min471171998125
25 C (77 F): Days with min3956201130
10 mm (0.39 in): Days with 10 mm or more rain9533194111
25 mm (0.98 in): Days with 25 mm or more rain951519414
50 mm (1.97 in): Days with 50 mm or more rain74519322
100 mm (3.94 in): Days with 100 mm or more rain13119321
200 mm (7.87 in): Days with 200 mm or more rain1119781
10 cm (3.9 in): Days with 10 cm or more snowfall23219301

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1912.

Download the Data

  • Data for Stamford 1 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 (2026-10-17).