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Built 2026-10-19 (19 October 2026)

Donnellson Threshold Days by Year (USC00132299)

17 fixed thresholds counted per year at Donnellson (USC00132299): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Donnellson Thresholds

  • Donnellson: days with 10 mm (0.39 in) or more of precipitation in 80 years, most in 1973 with 47.
  • Donnellson: days with 25 mm (0.98 in) or more of precipitation in 80 years, most in 1973 with 23.
  • Donnellson: days with 10 cm (3.9 in) or more of snowfall in 63 years, most in 1978 with 6.
  • Donnellson: days with 50 mm (1.97 in) or more of precipitation in 62 years, most in 2009 with 6.
  • 17 fixed thresholds have at least one qualifying day at Donnellson.
20 years with a qualifying day
Days at or above 30 C (86 F) per year at Donnellson Days per year at Donnellson with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 82 in 2018. 02550751002007: 672008: 302009: 172010: 602011: 692012: 762013: 602014: 432015: 522016: 662017: 692018: 822019: 692020: 592021: 682022: 632023: 542024: 552025: 632026: 642007200920112013201520172019202120232025
Days per year at Donnellson with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 82 in 2018.
Days at or above 30 C (86 F) per year at Donnellson
YearDaysDecade average
20076738
20083038
20091738
20106064.6
20116964.6
20127664.6
20136064.6
20144364.6
20155264.6
20166664.6
20176964.6
20188264.6
20196964.6
20205960.9
20216860.9
20226360.9
20235460.9
20245560.9
20256360.9
20266460.9
First to last qualifying date each year at Donnellson For each year, a bar from the first to the last day at Donnellson meeting 30 C (86 F). 2007: 30 April 2007 to 8 October 20072008: 2 June 2008 to 3 September 20082009: 23 May 2009 to 10 August 20092010: 24 May 2010 to 10 October 20102011: 10 May 2011 to 9 October 20112012: 2 April 2012 to 13 September 20122013: 1 May 2013 to 5 October 20132014: 8 May 2014 to 29 September 20142015: 6 June 2015 to 29 September 20152016: 7 May 2016 to 18 October 20162017: 16 May 2017 to 3 October 20172018: 7 May 2018 to 4 October 20182019: 17 May 2019 to 2 October 20192020: 25 May 2020 to 12 October 20202021: 27 April 2021 to 1 October 20212022: 10 May 2022 to 21 September 20222023: 5 April 2023 to 4 October 20232024: 15 April 2024 to 13 October 20242025: 16 May 2025 to 5 October 20252026: 22 March 2026 to 13 October 20262007201020132016201920222025JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Donnellson meeting 30 C (86 F).
First to last qualifying date each year at Donnellson
YearFirst dateLast date
20072007-04-302007-10-08
20082008-06-022008-09-03
20092009-05-232009-08-10
20102010-05-242010-10-10
20112011-05-102011-10-09
20122012-04-022012-09-13
20132013-05-012013-10-05
20142014-05-082014-09-29
20152015-06-062015-09-29
20162016-05-072016-10-18
20172017-05-162017-10-03
20182018-05-072018-10-04
20192019-05-172019-10-02
20202020-05-252020-10-12
20212021-04-272021-10-01
20222022-05-102022-09-21
20232023-04-052023-10-04
20242024-04-152024-10-13
20252025-05-162025-10-05
20262026-03-222026-10-13

Every Fixed Threshold

Fixed thresholds at Donnellson
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days2082201864
35 C (95 F): Days203020128
40 C (104 F): Days1420124
90 F (32.2 C): Days2053201231
100 F (37.8 C): Days71020121
0 C (32 F): Ice days (max2064201425
0 C (32 F): Frost days (min20151201869
-10 C (14 F): Days with min2065201427
-20 C (-4 F): Days with min181820147
20 C (68 F): Tropical nights (min2043202551
25 C (77 F): Days with min9520111
10 mm (0.39 in): Days with 10 mm or more rain8047197329
25 mm (0.98 in): Days with 25 mm or more rain8023197311
50 mm (1.97 in): Days with 50 mm or more rain62620091
100 mm (3.94 in): Days with 100 mm or more rain6119611
10 cm (3.9 in): Days with 10 cm or more snowfall63619781
25 cm (9.8 in): Days with 25 cm or more snowfall7119591

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 2007.

Download the Data

  • Data for Donnellson 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).