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Data as of 2025-12-31
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Built 2026-10-19 (19 October 2026)

Gretna Threshold Days by Year (USC00253467)

18 fixed thresholds counted per year at Gretna (USC00253467): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Gretna Thresholds

  • Gretna: days with 10 mm (0.39 in) or more of precipitation in 27 years, most in 2016 with 40.
  • Gretna: days with 25 mm (0.98 in) or more of precipitation in 27 years, most in 2013 with 15.
  • Gretna: days with 10 cm (3.9 in) or more of snowfall in 24 years, most in 2007 with 7.
  • Gretna: days with 50 mm (1.97 in) or more of precipitation in 23 years, most in 2008 with 5.
  • 18 fixed thresholds have at least one qualifying day at Gretna.
20 years with a qualifying day
Days at or above 30 C (86 F) per year at Gretna Days per year at Gretna with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 81 in 2012. 02550751002005: 702006: 612007: 642008: 372009: 242010: 572011: 542012: 812013: 482014: 372015: 402016: 572017: 482018: 602019: 492021: 552022: 612023: 552024: 502025: 562005200720092011201320152017201920222024
Days per year at Gretna with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 81 in 2012.
Days at or above 30 C (86 F) per year at Gretna
YearDaysDecade average
20057051.2
20066151.2
20076451.2
20083751.2
20092451.2
20105753.1
20115453.1
20128153.1
20134853.1
20143753.1
20154053.1
20165753.1
20174853.1
20186053.1
20194953.1
20215555.4
20226155.4
20235555.4
20245055.4
20255655.4
First to last qualifying date each year at Gretna For each year, a bar from the first to the last day at Gretna meeting 30 C (86 F). 2005: 11 May 2005 to 5 October 20052006: 14 April 2006 to 4 October 20062007: 12 May 2007 to 6 October 20072008: 26 May 2008 to 2 September 20082009: 25 April 2009 to 15 August 20092010: 23 May 2010 to 9 October 20102011: 10 April 2011 to 5 October 20112012: 1 April 2012 to 20 September 20122013: 15 May 2013 to 28 September 20132014: 8 May 2014 to 20 September 20142015: 17 March 2015 to 12 October 20152016: 31 May 2016 to 24 September 20162017: 9 May 2017 to 25 September 20172018: 24 May 2018 to 4 October 20182019: 17 May 2019 to 1 October 20192021: 2 May 2021 to 29 September 20212022: 13 April 2022 to 21 September 20222023: 13 April 2023 to 3 October 20232024: 6 June 2024 to 11 October 20242025: 29 April 2025 to 13 October 20252005200820112014201720212024JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Gretna meeting 30 C (86 F).
First to last qualifying date each year at Gretna
YearFirst dateLast date
20052005-05-112005-10-05
20062006-04-142006-10-04
20072007-05-122007-10-06
20082008-05-262008-09-02
20092009-04-252009-08-15
20102010-05-232010-10-09
20112011-04-102011-10-05
20122012-04-012012-09-20
20132013-05-152013-09-28
20142014-05-082014-09-20
20152015-03-172015-10-12
20162016-05-312016-09-24
20172017-05-092017-09-25
20182018-05-242018-10-04
20192019-05-172019-10-01
20212021-05-022021-09-29
20222022-04-132022-09-21
20232023-04-132023-10-03
20242024-06-062024-10-11
20252025-04-292025-10-13

Every Fixed Threshold

Fixed thresholds at Gretna
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days2081201256
35 C (95 F): Days202520123
40 C (104 F): Days1120231
90 F (32.2 C): Days2056201217
100 F (37.8 C): Days8620123
0 C (32 F): Ice days (max2065201036
0 C (32 F): Frost days (min201572013119
-10 C (14 F): Days with min2060200847
-20 C (-4 F): Days with min1813202211
-30 C (-22 F): Days with min1220212
20 C (68 F): Tropical nights (min2043201639
25 C (77 F): Days with min9420112
10 mm (0.39 in): Days with 10 mm or more rain2740201621
25 mm (0.98 in): Days with 25 mm or more rain2715201311
50 mm (1.97 in): Days with 50 mm or more rain23520081
100 mm (3.94 in): Days with 100 mm or more rain2120141
10 cm (3.9 in): Days with 10 cm or more snowfall24720072
25 cm (9.8 in): Days with 25 cm or more snowfall5220091

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 2005.

Download the Data

  • Data for Gretna 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 (2025-12-31).