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Built 2026-10-19 (19 October 2026)

Rumsey Lock 2 Threshold Days by Year (USC00157039)

6 fixed thresholds counted per year at Rumsey Lock 2 (USC00157039): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Rumsey Lock 2 Thresholds

  • Rumsey Lock 2: days with 10 mm (0.39 in) or more of precipitation in 36 years, most in 1948 with 50.
  • Rumsey Lock 2: days with 25 mm (0.98 in) or more of precipitation in 36 years, most in 1927 with 20.
  • Rumsey Lock 2: days with 50 mm (1.97 in) or more of precipitation in 35 years, most in 1935 with 6.
  • Rumsey Lock 2: days with 10 cm (3.9 in) or more of snowfall in 12 years, most in 1918 with 4.
  • 6 fixed thresholds have at least one qualifying day at Rumsey Lock 2.
36 years with a qualifying day
Days with 10 mm (0.39 in) or more of precipitation per year at Rumsey Lock 2 Days per year at Rumsey Lock 2 with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 50 in 1948. 02040601917: 321918: 311919: 401920: 431921: 491922: 451923: 481924: 331925: 361926: 341927: 471928: 381929: 471930: 281931: 361932: 471933: 451934: 351935: 471936: 281937: 431938: 361939: 411940: 321941: 261942: 391943: 321944: 271948: 501949: 481950: 501951: 421952: 341953: 291954: 321955: 35191719211925192919331937194119481952
Days per year at Rumsey Lock 2 with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 50 in 1948.
Days with 10 mm (0.39 in) or more of precipitation per year at Rumsey Lock 2
YearDaysDecade average
19173234.3
19183134.3
19194034.3
19204342
19214942
19224542
19234842
19243342
19253642
19263442
19274742
19283842
19294742
19302838.6
19313638.6
19324738.6
19334538.6
19343538.6
19354738.6
19362838.6
19374338.6
19383638.6
19394138.6
19403236.3
19412636.3
19423936.3
19433236.3
19442736.3
19485036.3
19494836.3
19505037
19514237
19523437
19532937
19543237
19553537
First to last qualifying date each year at Rumsey Lock 2 For each year, a bar from the first to the last day at Rumsey Lock 2 meeting 10 mm (0.39 in). 1917: 15 February 1917 to 25 December 19171918: 6 January 1918 to 31 December 19181919: 1 January 1919 to 13 December 19191920: 8 January 1920 to 27 December 19201921: 25 January 1921 to 24 December 19211922: 5 January 1922 to 31 December 19221923: 15 January 1923 to 23 December 19231924: 3 January 1924 to 8 December 19241925: 27 January 1925 to 5 December 19251926: 18 January 1926 to 26 December 19261927: 18 January 1927 to 29 December 19271928: 8 January 1928 to 17 December 19281929: 1 January 1929 to 18 December 19291930: 2 January 1930 to 26 December 19301931: 8 February 1931 to 31 December 19311932: 6 January 1932 to 31 December 19321933: 18 January 1933 to 19 December 19331934: 5 January 1934 to 26 December 19341935: 1 January 1935 to 29 December 19351936: 6 January 1936 to 31 December 19361937: 7 January 1937 to 18 December 19371938: 21 January 1938 to 27 December 19381939: 5 January 1939 to 27 December 19391940: 14 January 1940 to 28 December 19401941: 17 January 1941 to 23 December 19411942: 1 January 1942 to 28 December 19421943: 3 February 1943 to 29 December 19431944: 3 January 1944 to 28 December 19441948: 1 January 1948 to 29 December 19481949: 5 January 1949 to 27 December 19491950: 2 January 1950 to 7 December 19501951: 3 January 1951 to 26 December 19511952: 2 January 1952 to 10 December 19521953: 8 January 1953 to 6 December 19531954: 10 January 1954 to 29 December 19541955: 2 February 1955 to 4 December 195519171922192719321937194219501955JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Rumsey Lock 2 meeting 10 mm (0.39 in).
First to last qualifying date each year at Rumsey Lock 2
YearFirst dateLast date
19171917-02-151917-12-25
19181918-01-061918-12-31
19191919-01-011919-12-13
19201920-01-081920-12-27
19211921-01-251921-12-24
19221922-01-051922-12-31
19231923-01-151923-12-23
19241924-01-031924-12-08
19251925-01-271925-12-05
19261926-01-181926-12-26
19271927-01-181927-12-29
19281928-01-081928-12-17
19291929-01-011929-12-18
19301930-01-021930-12-26
19311931-02-081931-12-31
19321932-01-061932-12-31
19331933-01-181933-12-19
19341934-01-051934-12-26
19351935-01-011935-12-29
19361936-01-061936-12-31
19371937-01-071937-12-18
19381938-01-211938-12-27
19391939-01-051939-12-27
19401940-01-141940-12-28
19411941-01-171941-12-23
19421942-01-011942-12-28
19431943-02-031943-12-29
19441944-01-031944-12-28
19481948-01-011948-12-29
19491949-01-051949-12-27
19501950-01-021950-12-07
19511951-01-031951-12-26
19521952-01-021952-12-10
19531953-01-081953-12-06
19541954-01-101954-12-29
19551955-02-021955-12-04

Every Fixed Threshold

Fixed thresholds at Rumsey Lock 2
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
10 mm (0.39 in): Days with 10 mm or more rain3650194835
25 mm (0.98 in): Days with 25 mm or more rain3620192710
50 mm (1.97 in): Days with 50 mm or more rain35619351
100 mm (3.94 in): Days with 100 mm or more rain6219231
10 cm (3.9 in): Days with 10 cm or more snowfall12419181
25 cm (9.8 in): Days with 25 cm or more snowfall2119171

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1917.

Download the Data

  • Data for Rumsey Lock 2 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).