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Data as of 2026-10-14
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Built 2026-10-16 (16 October 2026)

Rouen - Boos Threshold Days by Year

12 fixed thresholds counted per year at Rouen - Boos (FRE00106184): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Rouen - Boos Thresholds

  • Rouen - Boos: nights with a minimum temperature at or below 0 C (32 F) in 58 years, most in 1985 with 77.
  • Rouen - Boos: days with 10 mm (0.39 in) or more of precipitation in 58 years, most in 2000 with 35.
  • Rouen - Boos: days with a maximum temperature at or below 0 C (32 F) in 50 years, most in 1985 with 18.
  • Rouen - Boos: days with a maximum temperature at or above 30 C (86 F) in 48 years, most in 1976 with 17.
  • 12 fixed thresholds have at least one qualifying day at Rouen - Boos.
48 years with a qualifying day
Days at or above 30 C (86 F) per year at Rouen - Boos Days per year at Rouen - Boos with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 17 in 1976. 0102030401969: 11973: 51974: 11975: 61976: 171979: 11982: 31983: 41984: 21986: 21987: 11989: 41990: 121991: 11992: 11994: 61995: 141996: 41997: 31998: 71999: 42000: 22001: 72002: 42003: 142004: 32005: 42006: 102007: 12008: 22009: 52010: 52011: 12012: 62013: 52014: 22015: 82016: 72017: 82018: 152019: 122020: 152021: 12022: 142023: 72024: 42025: 72026: 371969197919871994199920042009201420192024
Days per year at Rouen - Boos with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 17 in 1976.
Days at or above 30 C (86 F) per year at Rouen - Boos
YearDaysDecade average
196911
197356
197416
197566
1976176
197916
198232.7
198342.7
198422.7
198622.7
198712.7
198942.7
1990125.8
199115.8
199215.8
199465.8
1995145.8
199645.8
199735.8
199875.8
199945.8
200025.2
200175.2
200245.2
2003145.2
200435.2
200545.2
2006105.2
200715.2
200825.2
200955.2
201056.9
201116.9
201266.9
201356.9
201426.9
201586.9
201676.9
201786.9
2018156.9
2019126.9
20201512.1
2021112.1
20221412.1
2023712.1
2024412.1
2025712.1
20263712.1
First to last qualifying date each year at Rouen - Boos For each year, a bar from the first to the last day at Rouen - Boos meeting 30 C (86 F). 1969: 28 July 1969 to 28 July 19691973: 13 August 1973 to 5 September 19731974: 15 August 1974 to 15 August 19741975: 1 August 1975 to 8 August 19751976: 9 June 1976 to 15 July 19761979: 27 July 1979 to 27 July 19791982: 12 July 1982 to 16 September 19821983: 10 July 1983 to 16 July 19831984: 8 July 1984 to 30 July 19841986: 27 June 1986 to 28 June 19861987: 21 August 1987 to 21 August 19871989: 21 July 1989 to 20 August 19891990: 15 July 1990 to 29 August 19901991: 11 July 1991 to 11 July 19911992: 7 August 1992 to 7 August 19921994: 24 June 1994 to 3 August 19941995: 29 June 1995 to 20 August 19951996: 6 June 1996 to 22 July 19961997: 11 August 1997 to 23 August 19971998: 13 May 1998 to 11 August 19981999: 18 July 1999 to 11 September 19992000: 19 June 2000 to 25 August 20002001: 25 June 2001 to 26 August 20012002: 17 June 2002 to 17 August 20022003: 14 July 2003 to 19 September 20032004: 8 June 2004 to 8 August 20042005: 23 June 2005 to 4 September 20052006: 12 June 2006 to 26 July 20062007: 5 August 2007 to 5 August 20072008: 28 July 2008 to 31 July 20082009: 2 July 2009 to 8 September 20092010: 1 July 2010 to 20 July 20102011: 27 June 2011 to 27 June 20112012: 25 July 2012 to 9 September 20122013: 21 July 2013 to 5 September 20132014: 17 July 2014 to 18 July 20142015: 30 June 2015 to 30 August 20152016: 19 July 2016 to 13 September 20162017: 19 June 2017 to 29 August 20172018: 30 June 2018 to 7 August 20182019: 26 June 2019 to 27 August 20192020: 24 June 2020 to 15 September 20202021: 16 June 2021 to 16 June 20212022: 17 June 2022 to 24 August 20222023: 25 June 2023 to 10 September 20232024: 19 July 2024 to 12 August 20242025: 13 June 2025 to 19 September 20252026: 25 May 2026 to 14 August 202619691982199019972003200920152021JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Rouen - Boos meeting 30 C (86 F).
First to last qualifying date each year at Rouen - Boos
YearFirst dateLast date
19691969-07-281969-07-28
19731973-08-131973-09-05
19741974-08-151974-08-15
19751975-08-011975-08-08
19761976-06-091976-07-15
19791979-07-271979-07-27
19821982-07-121982-09-16
19831983-07-101983-07-16
19841984-07-081984-07-30
19861986-06-271986-06-28
19871987-08-211987-08-21
19891989-07-211989-08-20
19901990-07-151990-08-29
19911991-07-111991-07-11
19921992-08-071992-08-07
19941994-06-241994-08-03
19951995-06-291995-08-20
19961996-06-061996-07-22
19971997-08-111997-08-23
19981998-05-131998-08-11
19991999-07-181999-09-11
20002000-06-192000-08-25
20012001-06-252001-08-26
20022002-06-172002-08-17
20032003-07-142003-09-19
20042004-06-082004-08-08
20052005-06-232005-09-04
20062006-06-122006-07-26
20072007-08-052007-08-05
20082008-07-282008-07-31
20092009-07-022009-09-08
20102010-07-012010-07-20
20112011-06-272011-06-27
20122012-07-252012-09-09
20132013-07-212013-09-05
20142014-07-172014-07-18
20152015-06-302015-08-30
20162016-07-192016-09-13
20172017-06-192017-08-29
20182018-06-302018-08-07
20192019-06-262019-08-27
20202020-06-242020-09-15
20212021-06-162021-06-16
20222022-06-172022-08-24
20232023-06-252023-09-10
20242024-07-192024-08-12
20252025-06-132025-09-19
20262026-05-252026-08-14

Every Fixed Threshold

Fixed thresholds at Rouen - Boos
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days4817197637
35 C (95 F): Days11520038
40 C (104 F): Days1120191
90 F (32.2 C): Days3112197620
100 F (37.8 C): Days6220201
0 C (32 F): Ice days (max501819851
0 C (32 F): Frost days (min587719859
-10 C (14 F): Days with min16819854
20 C (68 F): Tropical nights (min11219767
10 mm (0.39 in): Days with 10 mm or more rain5835200012
25 mm (0.98 in): Days with 25 mm or more rain46519861
50 mm (1.97 in): Days with 50 mm or more rain2119831

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1969.

Download the Data

  • Data for Rouen - Boos 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 (2026-10-14).