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Data as of 2025-12-31
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Built 2026-10-17 (17 October 2026)

Paris-Montsouris Threshold Days by Year

10 fixed thresholds counted per year at Paris-Montsouris (FRM00007156): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Paris-Montsouris Thresholds

  • Paris-Montsouris: days with a maximum temperature at or above 30 C (86 F) in 21 years, most in 2023 with 29.
  • Paris-Montsouris: days with a maximum temperature at or above 90 F (32.2 C) in 21 years, most in 2022 with 18.
  • Paris-Montsouris: days with 10 mm (0.39 in) or more of precipitation in 21 years, most in 2024 with 24.
  • Paris-Montsouris: days with a maximum temperature at or above 35 C (95 F) in 16 years, most in 2020 with 9.
  • 10 fixed thresholds have at least one qualifying day at Paris-Montsouris.
21 years with a qualifying day
Days at or above 30 C (86 F) per year at Paris-Montsouris Days per year at Paris-Montsouris with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 29 in 2023. 01020301991: 172005: 162006: 212007: 72008: 92009: 162010: 182011: 92012: 132013: 182014: 62015: 212016: 172017: 172018: 272019: 222020: 252021: 122022: 262023: 292024: 161991200720102013201620192022
Days per year at Paris-Montsouris with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 29 in 2023.
Days at or above 30 C (86 F) per year at Paris-Montsouris
YearDaysDecade average
19911717
20051613.8
20062113.8
2007713.8
2008913.8
20091613.8
20101816.8
2011916.8
20121316.8
20131816.8
2014616.8
20152116.8
20161716.8
20171716.8
20182716.8
20192216.8
20202521.6
20211221.6
20222621.6
20232921.6
20241621.6
First to last qualifying date each year at Paris-Montsouris For each year, a bar from the first to the last day at Paris-Montsouris meeting 30 C (86 F). 1991: 5 July 1991 to 5 September 19912005: 26 May 2005 to 8 September 20052006: 11 June 2006 to 11 September 20062007: 19 June 2007 to 6 August 20072008: 1 July 2008 to 7 August 20082009: 25 May 2009 to 20 August 20092010: 24 May 2010 to 21 August 20102011: 4 June 2011 to 10 September 20112012: 28 June 2012 to 9 September 20122013: 15 July 2013 to 5 September 20132014: 16 July 2014 to 24 July 20142015: 5 June 2015 to 30 August 20152016: 23 June 2016 to 13 September 20162017: 27 May 2017 to 29 August 20172018: 30 June 2018 to 16 August 20182019: 2 June 2019 to 31 August 20192020: 21 May 2020 to 16 September 20202021: 14 June 2021 to 8 September 20212022: 15 June 2022 to 5 September 20222023: 9 June 2023 to 11 September 20232024: 25 June 2024 to 28 August 20241991200720102013201620192022JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Paris-Montsouris meeting 30 C (86 F).
First to last qualifying date each year at Paris-Montsouris
YearFirst dateLast date
19911991-07-051991-09-05
20052005-05-262005-09-08
20062006-06-112006-09-11
20072007-06-192007-08-06
20082008-07-012008-08-07
20092009-05-252009-08-20
20102010-05-242010-08-21
20112011-06-042011-09-10
20122012-06-282012-09-09
20132013-07-152013-09-05
20142014-07-162014-07-24
20152015-06-052015-08-30
20162016-06-232016-09-13
20172017-05-272017-08-29
20182018-06-302018-08-16
20192019-06-022019-08-31
20202020-05-212020-09-16
20212021-06-142021-09-08
20222022-06-152022-09-05
20232023-06-092023-09-11
20242024-06-252024-08-28

Every Fixed Threshold

Fixed thresholds at Paris-Montsouris
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days2129202316
35 C (95 F): Days16920201
40 C (104 F): Days2120191
90 F (32.2 C): Days211820227
100 F (37.8 C): Days5320192
0 C (32 F): Ice days (max11720101
0 C (32 F): Frost days (min10n/a3
10 mm (0.39 in): Days with 10 mm or more rain2124202424
25 mm (0.98 in): Days with 25 mm or more rain16420073
50 mm (1.97 in): Days with 50 mm or more rain4120161

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1991.

Download the Data

  • Data for Paris-Montsouris 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 2026-10-15 (15 October 2026). Threshold counts are computed by this site.

Data as of . Last revised (2025-12-31).