Built 2026-10-19 (19 October 2026)

Franz Threshold Days by Year (CA006052563)

16 fixed thresholds counted per year at Franz (CA006052563): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Franz Thresholds

  • Franz: days with 10 cm (3.9 in) or more of snowfall in 34 years, most in 1939 with 17.
  • Franz: nights with a minimum temperature at or below 0 C (32 F) in 33 years, most in 1956 with 250.
  • Franz: nights with a minimum temperature at or below -10 C (14 F) in 33 years, most in 1926 with 142.
  • Franz: nights with a minimum temperature at or below -20 C (-4 F) in 33 years, most in 1924 with 84.
  • 16 fixed thresholds have at least one qualifying day at Franz.
28 years with a qualifying day
Days at or above 30 C (86 F) per year at Franz Days per year at Franz with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 19 in 1921. 051015201918: 11919: 181921: 191922: 21923: 61925: 41926: 21927: 21929: 21930: 11931: 131932: 41933: 51934: 41935: 51936: 71938: 21939: 51940: 51941: 91942: 21943: 71944: 31945: 21948: 81949: 81955: 191956: 51918192219261930193319361940194319481956
Days per year at Franz with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 19 in 1921.
Days at or above 30 C (86 F) per year at Franz
YearDaysDecade average
191819.5
1919189.5
1921195.3
192225.3
192365.3
192545.3
192625.3
192725.3
192925.3
193015.1
1931135.1
193245.1
193355.1
193445.1
193555.1
193675.1
193825.1
193955.1
194055.5
194195.5
194225.5
194375.5
194435.5
194525.5
194885.5
194985.5
19551912
1956512
First to last qualifying date each year at Franz For each year, a bar from the first to the last day at Franz meeting 30 C (86 F). 1918: 21 July 1918 to 21 July 19181919: 28 May 1919 to 20 July 19191921: 19 June 1921 to 24 July 19211922: 14 August 1922 to 15 August 19221923: 18 June 1923 to 19 July 19231925: 5 June 1925 to 8 June 19251926: 30 July 1926 to 2 August 19261927: 30 June 1927 to 1 July 19271929: 29 May 1929 to 17 June 19291930: 27 July 1930 to 27 July 19301931: 19 June 1931 to 9 September 19311932: 5 June 1932 to 31 August 19321933: 19 June 1933 to 24 August 19331934: 19 July 1934 to 9 August 19341935: 4 July 1935 to 17 August 19351936: 5 July 1936 to 13 July 19361938: 21 June 1938 to 7 July 19381939: 2 June 1939 to 25 July 19391940: 20 July 1940 to 12 August 19401941: 26 June 1941 to 29 July 19411942: 18 July 1942 to 21 August 19421943: 8 July 1943 to 23 August 19431944: 26 July 1944 to 3 August 19441945: 23 June 1945 to 31 July 19451948: 1 June 1948 to 26 August 19481949: 12 June 1949 to 9 August 19491955: 21 May 1955 to 19 August 19551956: 10 June 1956 to 14 June 19561918192319291933193819421948JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Franz meeting 30 C (86 F).
First to last qualifying date each year at Franz
YearFirst dateLast date
19181918-07-211918-07-21
19191919-05-281919-07-20
19211921-06-191921-07-24
19221922-08-141922-08-15
19231923-06-181923-07-19
19251925-06-051925-06-08
19261926-07-301926-08-02
19271927-06-301927-07-01
19291929-05-291929-06-17
19301930-07-271930-07-27
19311931-06-191931-09-09
19321932-06-051932-08-31
19331933-06-191933-08-24
19341934-07-191934-08-09
19351935-07-041935-08-17
19361936-07-051936-07-13
19381938-06-211938-07-07
19391939-06-021939-07-25
19401940-07-201940-08-12
19411941-06-261941-07-29
19421942-07-181942-08-21
19431943-07-081943-08-23
19441944-07-261944-08-03
19451945-06-231945-07-31
19481948-06-011948-08-26
19491949-06-121949-08-09
19551955-05-211955-08-19
19561956-06-101956-06-14

Every Fixed Threshold

Fixed thresholds at Franz
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days281919215
35 C (95 F): Days5619211
90 F (32.2 C): Days181419214
100 F (37.8 C): Days2219362
0 C (32 F): Ice days (max321561926111
0 C (32 F): Frost days (min332501956250
-10 C (14 F): Days with min331421926135
-20 C (-4 F): Days with min3384192482
-30 C (-22 F): Days with min3343193418
-40 C (-40 F): Days with min31819432
20 C (68 F): Tropical nights (min7219312
10 mm (0.39 in): Days with 10 mm or more rain2934194121
25 mm (0.98 in): Days with 25 mm or more rain29819382
50 mm (1.97 in): Days with 50 mm or more rain10219211
10 cm (3.9 in): Days with 10 cm or more snowfall341719392
25 cm (9.8 in): Days with 25 cm or more snowfall16419381

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1918.

Download the Data

  • Data for Franz 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).