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Built 2026-10-19 (19 October 2026)

Andover Threshold Days by Year (ASN00093000)

3 fixed thresholds counted per year at Andover (ASN00093000): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Andover Thresholds

  • Andover: days with 10 mm (0.39 in) or more of precipitation in 37 years, most in 1916 with 33.
  • Andover: days with 25 mm (0.98 in) or more of precipitation in 33 years, most in 1935 with 7.
  • Andover: days with 50 mm (1.97 in) or more of precipitation in 6 years, most in 1916 with 3.
  • 3 fixed thresholds have at least one qualifying day at Andover.
37 years with a qualifying day
Days with 10 mm (0.39 in) or more of precipitation per year at Andover Days per year at Andover with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 33 in 1916. 0102030401908: 121909: 141910: 201911: 151912: 151914: 101915: 81916: 331917: 191918: 181919: 131920: 151921: 131922: 191923: 211924: 231925: 171926: 161927: 131928: 211929: 211930: 151931: 201932: 211933: 101934: 181935: 231936: 81937: 131938: 181939: 211940: 81941: 111942: 141943: 141945: 111951: 151908191219171921192519291933193719411951
Days per year at Andover with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 33 in 1916.
Days with 10 mm (0.39 in) or more of precipitation per year at Andover
YearDaysDecade average
19081213
19091413
19102016.8
19111516.8
19121516.8
19141016.8
1915816.8
19163316.8
19171916.8
19181816.8
19191316.8
19201517.9
19211317.9
19221917.9
19232117.9
19242317.9
19251717.9
19261617.9
19271317.9
19282117.9
19292117.9
19301516.7
19312016.7
19322116.7
19331016.7
19341816.7
19352316.7
1936816.7
19371316.7
19381816.7
19392116.7
1940811.6
19411111.6
19421411.6
19431411.6
19451111.6
19511515
First to last qualifying date each year at Andover For each year, a bar from the first to the last day at Andover meeting 10 mm (0.39 in). 1908: 9 January 1908 to 10 October 19081909: 2 January 1909 to 4 December 19091910: 16 January 1910 to 15 December 19101911: 5 March 1911 to 25 December 19111912: 5 March 1912 to 5 November 19121914: 13 March 1914 to 30 December 19141915: 14 March 1915 to 11 November 19151916: 9 January 1916 to 30 December 19161917: 15 February 1917 to 18 December 19171918: 15 January 1918 to 20 December 19181919: 6 January 1919 to 18 December 19191920: 8 January 1920 to 19 December 19201921: 2 January 1921 to 31 October 19211922: 21 February 1922 to 23 December 19221923: 6 January 1923 to 5 December 19231924: 26 January 1924 to 2 December 19241925: 28 January 1925 to 18 November 19251926: 5 January 1926 to 6 December 19261927: 27 January 1927 to 19 December 19271928: 1 January 1928 to 18 December 19281929: 18 January 1929 to 27 December 19291930: 19 February 1930 to 25 December 19301931: 15 February 1931 to 20 November 19311932: 10 January 1932 to 24 December 19321933: 19 February 1933 to 30 November 19331934: 9 January 1934 to 31 December 19341935: 4 January 1935 to 21 December 19351936: 1 June 1936 to 21 December 19361937: 2 January 1937 to 26 December 19371938: 3 January 1938 to 28 December 19381939: 17 February 1939 to 21 November 19391940: 20 March 1940 to 29 December 19401941: 17 January 1941 to 6 December 19411942: 20 January 1942 to 24 December 19421943: 4 January 1943 to 4 December 19431945: 15 January 1945 to 26 October 19451951: 8 January 1951 to 15 December 195119081914191919241929193419391945JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Andover meeting 10 mm (0.39 in).
First to last qualifying date each year at Andover
YearFirst dateLast date
19081908-01-091908-10-10
19091909-01-021909-12-04
19101910-01-161910-12-15
19111911-03-051911-12-25
19121912-03-051912-11-05
19141914-03-131914-12-30
19151915-03-141915-11-11
19161916-01-091916-12-30
19171917-02-151917-12-18
19181918-01-151918-12-20
19191919-01-061919-12-18
19201920-01-081920-12-19
19211921-01-021921-10-31
19221922-02-211922-12-23
19231923-01-061923-12-05
19241924-01-261924-12-02
19251925-01-281925-11-18
19261926-01-051926-12-06
19271927-01-271927-12-19
19281928-01-011928-12-18
19291929-01-181929-12-27
19301930-02-191930-12-25
19311931-02-151931-11-20
19321932-01-101932-12-24
19331933-02-191933-11-30
19341934-01-091934-12-31
19351935-01-041935-12-21
19361936-06-011936-12-21
19371937-01-021937-12-26
19381938-01-031938-12-28
19391939-02-171939-11-21
19401940-03-201940-12-29
19411941-01-171941-12-06
19421942-01-201942-12-24
19431943-01-041943-12-04
19451945-01-151945-10-26
19511951-01-081951-12-15

Every Fixed Threshold

Fixed thresholds at Andover
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
10 mm (0.39 in): Days with 10 mm or more rain3733191615
25 mm (0.98 in): Days with 25 mm or more rain33719352
50 mm (1.97 in): Days with 50 mm or more rain6319161

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1908.

Download the Data

  • Data for Andover 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).