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

Gretna (Aut) Threshold Days by Year (CA005021220)

15 fixed thresholds counted per year at Gretna (Aut) (CA005021220): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Gretna (Aut) Thresholds

  • Gretna (Aut): days with 10 mm (0.39 in) or more of precipitation in 22 years, most in 1908 with 25.
  • Gretna (Aut): days with 25 mm (0.98 in) or more of precipitation in 19 years, most in 1891 with 7.
  • Gretna (Aut): days with 10 cm (3.9 in) or more of snowfall in 19 years, most in 1908 with 11.
  • Gretna (Aut): days with a maximum temperature at or above 30 C (86 F) in 11 years, most in 1961 with 41.
  • 15 fixed thresholds have at least one qualifying day at Gretna (Aut).
11 years with a qualifying day
Days at or above 30 C (86 F) per year at Gretna (Aut) Days per year at Gretna (Aut) with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 41 in 1961. 02040601956: 91957: 111958: 121959: 211960: 271961: 411962: 91963: 271964: 191965: 91973: 20195619581960196219641973
Days per year at Gretna (Aut) with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 41 in 1961.
Days at or above 30 C (86 F) per year at Gretna (Aut)
YearDaysDecade average
1956913.3
19571113.3
19581213.3
19592113.3
19602722
19614122
1962922
19632722
19641922
1965922
19732020
First to last qualifying date each year at Gretna (Aut) For each year, a bar from the first to the last day at Gretna (Aut) meeting 30 C (86 F). 1956: 21 May 1956 to 28 August 19561957: 10 July 1957 to 10 August 19571958: 12 May 1958 to 16 August 19581959: 17 May 1959 to 8 September 19591960: 13 May 1960 to 20 September 19601961: 20 May 1961 to 31 August 19611962: 26 June 1962 to 2 September 19621963: 30 May 1963 to 4 October 19631964: 20 May 1964 to 5 August 19641965: 13 May 1965 to 23 August 19651973: 2 June 1973 to 31 August 1973195619581960196219641973JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Gretna (Aut) meeting 30 C (86 F).
First to last qualifying date each year at Gretna (Aut)
YearFirst dateLast date
19561956-05-211956-08-28
19571957-07-101957-08-10
19581958-05-121958-08-16
19591959-05-171959-09-08
19601960-05-131960-09-20
19611961-05-201961-08-31
19621962-06-261962-09-02
19631963-05-301963-10-04
19641964-05-201964-08-05
19651965-05-131965-08-23
19731973-06-021973-08-31

Every Fixed Threshold

Fixed thresholds at Gretna (Aut)
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days1141196120
35 C (95 F): Days6819611
90 F (32.2 C): Days112419614
100 F (37.8 C): Days1119641
0 C (32 F): Ice days (max11129196593
0 C (32 F): Frost days (min112031959182
-10 C (14 F): Days with min11126196591
-20 C (-4 F): Days with min1161196523
-30 C (-22 F): Days with min111819626
20 C (68 F): Tropical nights (min9619601
10 mm (0.39 in): Days with 10 mm or more rain2225190818
25 mm (0.98 in): Days with 25 mm or more rain19718913
50 mm (1.97 in): Days with 50 mm or more rain11218912
10 cm (3.9 in): Days with 10 cm or more snowfall191119082
25 cm (9.8 in): Days with 25 cm or more snowfall5118911

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1956.

Download the Data

  • Data for Gretna (Aut) 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).