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Built 2026-10-19 (19 October 2026)

South Lyndeboro Threshold Days by Year (USC00278081)

7 fixed thresholds counted per year at South Lyndeboro (USC00278081): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for South Lyndeboro Thresholds

  • South Lyndeboro: days with 10 mm (0.39 in) or more of precipitation in 46 years, most in 1951 with 50.
  • South Lyndeboro: days with 25 mm (0.98 in) or more of precipitation in 46 years, most in 1953 with 22.
  • South Lyndeboro: days with 10 cm (3.9 in) or more of snowfall in 46 years, most in 1956 with 18.
  • South Lyndeboro: days with 50 mm (1.97 in) or more of precipitation in 41 years, most in 1991 with 8.
  • 7 fixed thresholds have at least one qualifying day at South Lyndeboro.
46 years with a qualifying day
Days with 10 mm (0.39 in) or more of precipitation per year at South Lyndeboro Days per year at South Lyndeboro with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 50 in 1951. 02040601946: 361947: 371948: 351949: 291950: 311951: 501952: 431953: 471954: 451955: 331956: 471957: 291958: 401959: 381960: 421961: 351962: 351963: 261964: 271965: 251966: 341967: 471968: 421969: 431970: 341971: 351972: 501973: 431974: 401975: 421977: 371978: 241979: 411980: 241981: 401983: 501984: 411985: 331986: 491987: 351988: 331990: 381991: 411993: 391994: 411998: 321946195119561961196619711977198319881998
Days per year at South Lyndeboro with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 50 in 1951.
Days with 10 mm (0.39 in) or more of precipitation per year at South Lyndeboro
YearDaysDecade average
19463634.3
19473734.3
19483534.3
19492934.3
19503140.3
19515040.3
19524340.3
19534740.3
19544540.3
19553340.3
19564740.3
19572940.3
19584040.3
19593840.3
19604235.6
19613535.6
19623535.6
19632635.6
19642735.6
19652535.6
19663435.6
19674735.6
19684235.6
19694335.6
19703438.4
19713538.4
19725038.4
19734338.4
19744038.4
19754238.4
19773738.4
19782438.4
19794138.4
19802438.1
19814038.1
19835038.1
19844138.1
19853338.1
19864938.1
19873538.1
19883338.1
19903838.2
19914138.2
19933938.2
19944138.2
19983238.2
First to last qualifying date each year at South Lyndeboro For each year, a bar from the first to the last day at South Lyndeboro meeting 10 mm (0.39 in). 1946: 10 January 1946 to 29 December 19461947: 2 January 1947 to 25 November 19471948: 2 January 1948 to 31 December 19481949: 5 January 1949 to 29 November 19491950: 6 January 1950 to 30 December 19501951: 7 January 1951 to 26 December 19511952: 5 January 1952 to 23 December 19521953: 3 January 1953 to 14 December 19531954: 27 January 1954 to 30 December 19541955: 7 February 1955 to 4 December 19551956: 3 January 1956 to 15 December 19561957: 7 January 1957 to 26 December 19571958: 1 January 1958 to 4 December 19581959: 2 January 1959 to 29 December 19591960: 3 January 1960 to 21 December 19601961: 1 January 1961 to 28 December 19611962: 6 January 1962 to 22 December 19621963: 12 January 1963 to 24 December 19631964: 10 January 1964 to 28 December 19641965: 24 January 1965 to 26 December 19651966: 3 January 1966 to 29 December 19661967: 28 January 1967 to 29 December 19671968: 15 January 1968 to 28 December 19681969: 24 January 1969 to 27 December 19691970: 10 February 1970 to 24 December 19701971: 5 February 1971 to 30 December 19711972: 25 January 1972 to 31 December 19721973: 1 January 1973 to 27 December 19731974: 11 January 1974 to 25 December 19741975: 7 January 1975 to 31 December 19751977: 8 January 1977 to 26 December 19771978: 9 January 1978 to 21 December 19781979: 3 January 1979 to 25 December 19791980: 17 February 1980 to 29 November 19801981: 3 February 1981 to 28 December 19811983: 11 January 1983 to 29 December 19831984: 11 January 1984 to 22 December 19841985: 2 January 1985 to 14 December 19851986: 4 January 1986 to 25 December 19861987: 3 January 1987 to 27 November 19871988: 26 January 1988 to 25 December 19881990: 22 January 1990 to 24 December 19901991: 10 January 1991 to 30 December 19911993: 14 January 1993 to 22 December 19931994: 4 January 1994 to 26 December 19941998: 10 January 1998 to 30 December 199819461952195819641970197719841991JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at South Lyndeboro meeting 10 mm (0.39 in).
First to last qualifying date each year at South Lyndeboro
YearFirst dateLast date
19461946-01-101946-12-29
19471947-01-021947-11-25
19481948-01-021948-12-31
19491949-01-051949-11-29
19501950-01-061950-12-30
19511951-01-071951-12-26
19521952-01-051952-12-23
19531953-01-031953-12-14
19541954-01-271954-12-30
19551955-02-071955-12-04
19561956-01-031956-12-15
19571957-01-071957-12-26
19581958-01-011958-12-04
19591959-01-021959-12-29
19601960-01-031960-12-21
19611961-01-011961-12-28
19621962-01-061962-12-22
19631963-01-121963-12-24
19641964-01-101964-12-28
19651965-01-241965-12-26
19661966-01-031966-12-29
19671967-01-281967-12-29
19681968-01-151968-12-28
19691969-01-241969-12-27
19701970-02-101970-12-24
19711971-02-051971-12-30
19721972-01-251972-12-31
19731973-01-011973-12-27
19741974-01-111974-12-25
19751975-01-071975-12-31
19771977-01-081977-12-26
19781978-01-091978-12-21
19791979-01-031979-12-25
19801980-02-171980-11-29
19811981-02-031981-12-28
19831983-01-111983-12-29
19841984-01-111984-12-22
19851985-01-021985-12-14
19861986-01-041986-12-25
19871987-01-031987-11-27
19881988-01-261988-12-25
19901990-01-221990-12-24
19911991-01-101991-12-30
19931993-01-141993-12-22
19941994-01-041994-12-26
19981998-01-101998-12-30

Every Fixed Threshold

Fixed thresholds at South Lyndeboro
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
10 mm (0.39 in): Days with 10 mm or more rain4650195132
25 mm (0.98 in): Days with 25 mm or more rain4622195314
50 mm (1.97 in): Days with 50 mm or more rain41819913
100 mm (3.94 in): Days with 100 mm or more rain8119471
10 cm (3.9 in): Days with 10 cm or more snowfall461819562
25 cm (9.8 in): Days with 25 cm or more snowfall27419672
50 cm (19.7 in): Days with 50 cm or more snowfall1119931

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1946.

Download the Data

  • Data for South Lyndeboro 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).