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Data as of 2026-10-17
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Built 2026-10-19 (19 October 2026)

Sumy Threshold Days by Year (UPM00033275)

12 fixed thresholds counted per year at Sumy (UPM00033275): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Sumy Thresholds

  • Sumy: days with 10 mm (0.39 in) or more of precipitation in 44 years, most in 1966 with 21.
  • Sumy: days with 25 mm (0.98 in) or more of precipitation in 38 years, most in 1972 with 5.
  • Sumy: days with a maximum temperature at or above 30 C (86 F) in 12 years, most in 2010 with 51.
  • Sumy: days with a maximum temperature at or below 0 C (32 F) in 12 years, most in 2003 with 62.
  • 12 fixed thresholds have at least one qualifying day at Sumy.
12 years with a qualifying day
Days at or above 30 C (86 F) per year at Sumy Days per year at Sumy with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 51 in 2010. 02040602001: 192003: 52010: 512011: 112012: 262014: 232015: 172016: 212017: 222020: 262025: 122026: 15200120102012201520172025
Days per year at Sumy with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 51 in 2010.
Days at or above 30 C (86 F) per year at Sumy
YearDaysDecade average
20011912
2003512
20105124.4
20111124.4
20122624.4
20142324.4
20151724.4
20162124.4
20172224.4
20202617.7
20251217.7
20261517.7
First to last qualifying date each year at Sumy For each year, a bar from the first to the last day at Sumy meeting 30 C (86 F). 2001: 14 July 2001 to 21 August 20012003: 14 May 2003 to 30 July 20032010: 11 June 2010 to 25 August 20102011: 1 June 2011 to 31 August 20112012: 30 April 2012 to 7 August 20122014: 17 May 2014 to 21 August 20142015: 15 June 2015 to 24 September 20152016: 27 June 2016 to 30 August 20162017: 26 June 2017 to 21 August 20172020: 9 June 2020 to 6 September 20202025: 8 June 2025 to 29 August 20252026: 20 May 2026 to 22 August 2026200120102012201520172025JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Sumy meeting 30 C (86 F).
First to last qualifying date each year at Sumy
YearFirst dateLast date
20012001-07-142001-08-21
20032003-05-142003-07-30
20102010-06-112010-08-25
20112011-06-012011-08-31
20122012-04-302012-08-07
20142014-05-172014-08-21
20152015-06-152015-09-24
20162016-06-272016-08-30
20172017-06-262017-08-21
20202020-06-092020-09-06
20252025-06-082025-08-29
20262026-05-202026-08-22

Every Fixed Threshold

Fixed thresholds at Sumy
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days1251201015
35 C (95 F): Days51420102
90 F (32.2 C): Days113420107
100 F (37.8 C): Days1820108
0 C (32 F): Ice days (max1262200338
0 C (32 F): Frost days (min4131200370
-10 C (14 F): Days with min435200334
-20 C (-4 F): Days with min31020034
20 C (68 F): Tropical nights (min3720016
10 mm (0.39 in): Days with 10 mm or more rain442119665
25 mm (0.98 in): Days with 25 mm or more rain38519722
50 mm (1.97 in): Days with 50 mm or more rain50n/a1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 2001.

Download the Data

  • Data for Sumy 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).