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

Union Valley Threshold Days by Year (USC00299245)

4 fixed thresholds counted per year at Union Valley (USC00299245): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Union Valley Thresholds

  • Union Valley: days with 10 mm (0.39 in) or more of precipitation in 28 years, most in 1932 with 21.
  • Union Valley: days with 25 mm (0.98 in) or more of precipitation in 24 years, most in 1949 with 9.
  • Union Valley: days with 50 mm (1.97 in) or more of precipitation in 13 years, most in 1950 with 2.
  • Union Valley: days with 10 cm (3.9 in) or more of snowfall in 9 years, most in 1926 with 3.
  • 4 fixed thresholds have at least one qualifying day at Union Valley.
28 years with a qualifying day
Days with 10 mm (0.39 in) or more of precipitation per year at Union Valley Days per year at Union Valley with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 21 in 1932. 01020301924: 81925: 121926: 191927: 61928: 171929: 111930: 71931: 121932: 211933: 121934: 91935: 121937: 141938: 91940: 81945: 71946: 131947: 61948: 61949: 181950: 131951: 111952: 71953: 91954: 61955: 91956: 61957: 121924192719301933193719451948195119541957
Days per year at Union Valley with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 21 in 1932.
Days with 10 mm (0.39 in) or more of precipitation per year at Union Valley
YearDaysDecade average
1924812.2
19251212.2
19261912.2
1927612.2
19281712.2
19291112.2
1930712
19311212
19322112
19331212
1934912
19351212
19371412
1938912
194089.7
194579.7
1946139.7
194769.7
194869.7
1949189.7
1950139.1
1951119.1
195279.1
195399.1
195469.1
195599.1
195669.1
1957129.1
First to last qualifying date each year at Union Valley For each year, a bar from the first to the last day at Union Valley meeting 10 mm (0.39 in). 1924: 24 April 1924 to 6 October 19241925: 17 January 1925 to 15 October 19251926: 21 January 1926 to 24 December 19261927: 15 June 1927 to 16 September 19271928: 17 February 1928 to 12 December 19281929: 27 March 1929 to 24 November 19291930: 27 March 1930 to 26 October 19301931: 16 April 1931 to 17 December 19311932: 19 February 1932 to 19 October 19321933: 14 May 1933 to 2 November 19331934: 2 March 1934 to 17 November 19341935: 14 May 1935 to 25 November 19351937: 21 March 1937 to 6 December 19371938: 8 March 1938 to 10 October 19381940: 5 April 1940 to 23 November 19401945: 17 January 1945 to 9 October 19451946: 15 January 1946 to 11 December 19461947: 9 January 1947 to 14 November 19471948: 5 February 1948 to 20 October 19481949: 11 January 1949 to 22 October 19491950: 20 May 1950 to 4 October 19501951: 1 January 1951 to 8 December 19511952: 11 April 1952 to 22 September 19521953: 22 January 1953 to 20 October 19531954: 18 May 1954 to 6 October 19541955: 10 May 1955 to 2 October 19551956: 23 May 1956 to 17 October 19561957: 20 March 1957 to 22 October 19571924192819321937194619501954JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Union Valley meeting 10 mm (0.39 in).
First to last qualifying date each year at Union Valley
YearFirst dateLast date
19241924-04-241924-10-06
19251925-01-171925-10-15
19261926-01-211926-12-24
19271927-06-151927-09-16
19281928-02-171928-12-12
19291929-03-271929-11-24
19301930-03-271930-10-26
19311931-04-161931-12-17
19321932-02-191932-10-19
19331933-05-141933-11-02
19341934-03-021934-11-17
19351935-05-141935-11-25
19371937-03-211937-12-06
19381938-03-081938-10-10
19401940-04-051940-11-23
19451945-01-171945-10-09
19461946-01-151946-12-11
19471947-01-091947-11-14
19481948-02-051948-10-20
19491949-01-111949-10-22
19501950-05-201950-10-04
19511951-01-011951-12-08
19521952-04-111952-09-22
19531953-01-221953-10-20
19541954-05-181954-10-06
19551955-05-101955-10-02
19561956-05-231956-10-17
19571957-03-201957-10-22

Every Fixed Threshold

Fixed thresholds at Union Valley
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
10 mm (0.39 in): Days with 10 mm or more rain2821193212
25 mm (0.98 in): Days with 25 mm or more rain24919492
50 mm (1.97 in): Days with 50 mm or more rain13219501
10 cm (3.9 in): Days with 10 cm or more snowfall9319261

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1924.

Download the Data

  • Data for Union Valley 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).