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Built 2026-10-19 (19 October 2026)

Byllesby 1 S Threshold Days by Year (USC00441259)

6 fixed thresholds counted per year at Byllesby 1 S (USC00441259): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Byllesby 1 S Thresholds

  • Byllesby 1 S: days with 10 mm (0.39 in) or more of precipitation in 33 years, most in 1993 with 46.
  • Byllesby 1 S: days with 25 mm (0.98 in) or more of precipitation in 33 years, most in 1989 with 17.
  • Byllesby 1 S: days with 50 mm (1.97 in) or more of precipitation in 24 years, most in 1973 with 5.
  • Byllesby 1 S: days with 10 cm (3.9 in) or more of snowfall in 15 years, most in 1968 with 5.
  • 6 fixed thresholds have at least one qualifying day at Byllesby 1 S.
33 years with a qualifying day
Days with 10 mm (0.39 in) or more of precipitation per year at Byllesby 1 S Days per year at Byllesby 1 S with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 46 in 1993. 02040601968: 301969: 381970: 261971: 411972: 391973: 431974: 341975: 411976: 371977: 351978: 341979: 421980: 341981: 351982: 451983: 441984: 351985: 381986: 241987: 351988: 251989: 381990: 301991: 361992: 401993: 461994: 401995: 391996: 391997: 362000: 272001: 262002: 38196819721976198019841988199219962002
Days per year at Byllesby 1 S with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 46 in 1993.
Days with 10 mm (0.39 in) or more of precipitation per year at Byllesby 1 S
YearDaysDecade average
19683034
19693834
19702637.2
19714137.2
19723937.2
19734337.2
19743437.2
19754137.2
19763737.2
19773537.2
19783437.2
19794237.2
19803435.3
19813535.3
19824535.3
19834435.3
19843535.3
19853835.3
19862435.3
19873535.3
19882535.3
19893835.3
19903038.3
19913638.3
19924038.3
19934638.3
19944038.3
19953938.3
19963938.3
19973638.3
20002730.3
20012630.3
20023830.3
First to last qualifying date each year at Byllesby 1 S For each year, a bar from the first to the last day at Byllesby 1 S meeting 10 mm (0.39 in). 1968: 11 January 1968 to 23 December 19681969: 19 January 1969 to 31 December 19691970: 2 February 1970 to 3 November 19701971: 1 January 1971 to 25 November 19711972: 21 January 1972 to 22 December 19721973: 4 January 1973 to 27 December 19731974: 1 January 1974 to 28 December 19741975: 11 January 1975 to 26 December 19751976: 1 January 1976 to 12 December 19761977: 11 January 1977 to 15 December 19771978: 9 January 1978 to 31 December 19781979: 2 January 1979 to 25 December 19791980: 5 January 1980 to 28 November 19801981: 30 January 1981 to 25 December 19811982: 1 January 1982 to 16 December 19821983: 10 January 1983 to 29 December 19831984: 11 January 1984 to 6 December 19841985: 3 January 1985 to 13 December 19851986: 19 January 1986 to 25 December 19861987: 2 January 1987 to 28 December 19871988: 8 January 1988 to 9 December 19881989: 18 February 1989 to 13 December 19891990: 1 January 1990 to 28 December 19901991: 8 January 1991 to 29 December 19911992: 4 January 1992 to 28 December 19921993: 5 January 1993 to 29 December 19931994: 4 January 1994 to 11 December 19941995: 7 January 1995 to 19 December 19951996: 7 January 1996 to 2 December 19961997: 9 January 1997 to 30 December 19972000: 10 January 2000 to 18 December 20002001: 19 January 2001 to 18 December 20012002: 7 January 2002 to 29 December 20021968197319781983198819932000JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Byllesby 1 S meeting 10 mm (0.39 in).
First to last qualifying date each year at Byllesby 1 S
YearFirst dateLast date
19681968-01-111968-12-23
19691969-01-191969-12-31
19701970-02-021970-11-03
19711971-01-011971-11-25
19721972-01-211972-12-22
19731973-01-041973-12-27
19741974-01-011974-12-28
19751975-01-111975-12-26
19761976-01-011976-12-12
19771977-01-111977-12-15
19781978-01-091978-12-31
19791979-01-021979-12-25
19801980-01-051980-11-28
19811981-01-301981-12-25
19821982-01-011982-12-16
19831983-01-101983-12-29
19841984-01-111984-12-06
19851985-01-031985-12-13
19861986-01-191986-12-25
19871987-01-021987-12-28
19881988-01-081988-12-09
19891989-02-181989-12-13
19901990-01-011990-12-28
19911991-01-081991-12-29
19921992-01-041992-12-28
19931993-01-051993-12-29
19941994-01-041994-12-11
19951995-01-071995-12-19
19961996-01-071996-12-02
19971997-01-091997-12-30
20002000-01-102000-12-18
20012001-01-192001-12-18
20022002-01-072002-12-29

Every Fixed Threshold

Fixed thresholds at Byllesby 1 S
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
10 mm (0.39 in): Days with 10 mm or more rain3346199338
25 mm (0.98 in): Days with 25 mm or more rain3317198911
50 mm (1.97 in): Days with 50 mm or more rain24519732
100 mm (3.94 in): Days with 100 mm or more rain2119761
10 cm (3.9 in): Days with 10 cm or more snowfall15519681
25 cm (9.8 in): Days with 25 cm or more snowfall5119691

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1968.

Download the Data

  • Data for Byllesby 1 S 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).