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Data as of 2025-12-31
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Built 2026-10-15 (15 October 2026)

Circle Valley Post Office Threshold Days by Year

3 fixed thresholds counted per year at Circle Valley Post Office (ASN00012016): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Circle Valley Post Office Thresholds

  • Circle Valley Post Office: days with 10 mm (0.39 in) or more of precipitation in 33 years, most in 1938 with 16.
  • Circle Valley Post Office: days with 25 mm (0.98 in) or more of precipitation in 21 years, most in 1931 with 4.
  • Circle Valley Post Office: days with 50 mm (1.97 in) or more of precipitation in 5 years, most in 1961 with 2.
  • 3 fixed thresholds have at least one qualifying day at Circle Valley Post Office.
33 years with a qualifying day
Days with 10 mm (0.39 in) or more of precipitation per year at Circle Valley Post Office Days per year at Circle Valley Post Office with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 16 in 1938. 051015201919: 111920: 61921: 81929: 71930: 121931: 91932: 51933: 51934: 101935: 81936: 51937: 61938: 161940: 51941: 71942: 121943: 161945: 31946: 71947: 91948: 61954: 41955: 161956: 11957: 51958: 131959: 131960: 101961: 61962: 81964: 71965: 61966: 7191919301934193819431948195719611966
Days per year at Circle Valley Post Office with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 16 in 1938.
Days with 10 mm (0.39 in) or more of precipitation per year at Circle Valley Post Office
YearDaysDecade average
19191111
192067
192187
192977
1930128.4
193198.4
193258.4
193358.4
1934108.4
193588.4
193658.4
193768.4
1938168.4
194058.1
194178.1
1942128.1
1943168.1
194538.1
194678.1
194798.1
194868.1
195448.7
1955168.7
195618.7
195758.7
1958138.7
1959138.7
1960107.3
196167.3
196287.3
196477.3
196567.3
196677.3
First to last qualifying date each year at Circle Valley Post Office For each year, a bar from the first to the last day at Circle Valley Post Office meeting 10 mm (0.39 in). 1919: 31 March 1919 to 10 December 19191920: 14 March 1920 to 22 October 19201921: 25 May 1921 to 28 December 19211929: 1 January 1929 to 5 November 19291930: 11 March 1930 to 19 December 19301931: 24 February 1931 to 4 November 19311932: 28 March 1932 to 24 October 19321933: 7 March 1933 to 3 December 19331934: 22 January 1934 to 5 November 19341935: 13 February 1935 to 9 November 19351936: 19 January 1936 to 22 December 19361937: 13 February 1937 to 13 November 19371938: 17 January 1938 to 3 November 19381940: 7 May 1940 to 17 December 19401941: 6 May 1941 to 10 December 19411942: 4 February 1942 to 2 December 19421943: 12 February 1943 to 15 December 19431945: 27 April 1945 to 11 December 19451946: 27 June 1946 to 23 December 19461947: 17 February 1947 to 26 October 19471948: 23 February 1948 to 14 December 19481954: 22 April 1954 to 14 September 19541955: 15 January 1955 to 14 December 19551956: 18 July 1956 to 18 July 19561957: 18 February 1957 to 28 October 19571958: 28 January 1958 to 22 December 19581959: 8 February 1959 to 3 December 19591960: 1 January 1960 to 14 November 19601961: 27 January 1961 to 16 December 19611962: 20 March 1962 to 23 December 19621964: 28 March 1964 to 26 September 19641965: 5 May 1965 to 5 November 19651966: 2 January 1966 to 23 October 19661919193119361942194819581964JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Circle Valley Post Office meeting 10 mm (0.39 in).
First to last qualifying date each year at Circle Valley Post Office
YearFirst dateLast date
19191919-03-311919-12-10
19201920-03-141920-10-22
19211921-05-251921-12-28
19291929-01-011929-11-05
19301930-03-111930-12-19
19311931-02-241931-11-04
19321932-03-281932-10-24
19331933-03-071933-12-03
19341934-01-221934-11-05
19351935-02-131935-11-09
19361936-01-191936-12-22
19371937-02-131937-11-13
19381938-01-171938-11-03
19401940-05-071940-12-17
19411941-05-061941-12-10
19421942-02-041942-12-02
19431943-02-121943-12-15
19451945-04-271945-12-11
19461946-06-271946-12-23
19471947-02-171947-10-26
19481948-02-231948-12-14
19541954-04-221954-09-14
19551955-01-151955-12-14
19561956-07-181956-07-18
19571957-02-181957-10-28
19581958-01-281958-12-22
19591959-02-081959-12-03
19601960-01-011960-11-14
19611961-01-271961-12-16
19621962-03-201962-12-23
19641964-03-281964-09-26
19651965-05-051965-11-05
19661966-01-021966-10-23

Every Fixed Threshold

Fixed thresholds at Circle Valley Post Office
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
10 mm (0.39 in): Days with 10 mm or more rain331619387
25 mm (0.98 in): Days with 25 mm or more rain21419312
50 mm (1.97 in): Days with 50 mm or more rain5219611

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1919.

Download the Data

  • Data for Circle Valley Post Office 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 2026-10-14 (14 October 2026). Threshold counts are computed by this site.

Data as of . Last revised (2025-12-31).