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

Roslyn Threshold Days by Year (ASN00056153)

3 fixed thresholds counted per year at Roslyn (ASN00056153): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Roslyn Thresholds

  • Roslyn: days with 10 mm (0.39 in) or more of precipitation in 30 years, most in 1921 with 41.
  • Roslyn: days with 25 mm (0.98 in) or more of precipitation in 30 years, most in 1903 with 13.
  • Roslyn: days with 50 mm (1.97 in) or more of precipitation in 19 years, most in 1910 with 4.
  • 3 fixed thresholds have at least one qualifying day at Roslyn.
30 years with a qualifying day
Days with 10 mm (0.39 in) or more of precipitation per year at Roslyn Days per year at Roslyn with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 41 in 1921. 02040601895: 121896: 231897: 231898: 151899: 301900: 281901: 201902: 141903: 311904: 251905: 241906: 331907: 231908: 221909: 261910: 261911: 301912: 231913: 271914: 241915: 161916: 351917: 291919: 141920: 241921: 411922: 171923: 151924: 311925: 201895189819011904190719101913191619201923
Days per year at Roslyn with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 41 in 1921.
Days with 10 mm (0.39 in) or more of precipitation per year at Roslyn
YearDaysDecade average
18951220.6
18962320.6
18972320.6
18981520.6
18993020.6
19002824.6
19012024.6
19021424.6
19033124.6
19042524.6
19052424.6
19063324.6
19072324.6
19082224.6
19092624.6
19102624.9
19113024.9
19122324.9
19132724.9
19142424.9
19151624.9
19163524.9
19172924.9
19191424.9
19202424.7
19214124.7
19221724.7
19231524.7
19243124.7
19252024.7
First to last qualifying date each year at Roslyn For each year, a bar from the first to the last day at Roslyn meeting 10 mm (0.39 in). 1895: 10 April 1895 to 28 December 18951896: 4 January 1896 to 19 December 18961897: 3 January 1897 to 22 December 18971898: 2 January 1898 to 24 December 18981899: 12 January 1899 to 29 December 18991900: 9 January 1900 to 5 December 19001901: 1 January 1901 to 22 December 19011902: 3 January 1902 to 7 December 19021903: 25 March 1903 to 25 December 19031904: 23 January 1904 to 18 December 19041905: 16 January 1905 to 29 December 19051906: 1 January 1906 to 25 December 19061907: 4 January 1907 to 17 December 19071908: 2 February 1908 to 13 December 19081909: 21 January 1909 to 29 December 19091910: 11 January 1910 to 18 December 19101911: 3 January 1911 to 30 December 19111912: 6 January 1912 to 29 November 19121913: 1 January 1913 to 20 December 19131914: 2 January 1914 to 28 December 19141915: 1 January 1915 to 16 December 19151916: 15 January 1916 to 14 December 19161917: 23 January 1917 to 25 December 19171919: 2 January 1919 to 31 December 19191920: 1 January 1920 to 8 December 19201921: 9 January 1921 to 31 December 19211922: 17 January 1922 to 18 December 19221923: 6 January 1923 to 27 December 19231924: 7 January 1924 to 16 December 19241925: 5 January 1925 to 31 December 192518951899190319071911191519201924JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Roslyn meeting 10 mm (0.39 in).
First to last qualifying date each year at Roslyn
YearFirst dateLast date
18951895-04-101895-12-28
18961896-01-041896-12-19
18971897-01-031897-12-22
18981898-01-021898-12-24
18991899-01-121899-12-29
19001900-01-091900-12-05
19011901-01-011901-12-22
19021902-01-031902-12-07
19031903-03-251903-12-25
19041904-01-231904-12-18
19051905-01-161905-12-29
19061906-01-011906-12-25
19071907-01-041907-12-17
19081908-02-021908-12-13
19091909-01-211909-12-29
19101910-01-111910-12-18
19111911-01-031911-12-30
19121912-01-061912-11-29
19131913-01-011913-12-20
19141914-01-021914-12-28
19151915-01-011915-12-16
19161916-01-151916-12-14
19171917-01-231917-12-25
19191919-01-021919-12-31
19201920-01-011920-12-08
19211921-01-091921-12-31
19221922-01-171922-12-18
19231923-01-061923-12-27
19241924-01-071924-12-16
19251925-01-051925-12-31

Every Fixed Threshold

Fixed thresholds at Roslyn
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
10 mm (0.39 in): Days with 10 mm or more rain3041192120
25 mm (0.98 in): Days with 25 mm or more rain301319033
50 mm (1.97 in): Days with 50 mm or more rain19419101

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1895.

Download the Data

  • Data for Roslyn 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).