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

Merced Falls Threshold Days by Year

3 fixed thresholds counted per year at Merced Falls (USC00045541): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Merced Falls Thresholds

  • Merced Falls: days with 10 mm (0.39 in) or more of precipitation in 17 years, most in 1936 with 21.
  • Merced Falls: days with 25 mm (0.98 in) or more of precipitation in 15 years, most in 1936 with 5.
  • Merced Falls: days with 50 mm (1.97 in) or more of precipitation in 2 years, most in 1911 with 2.
  • 3 fixed thresholds have at least one qualifying day at Merced Falls.
17 years with a qualifying day
Days with 10 mm (0.39 in) or more of precipitation per year at Merced Falls Days per year at Merced Falls with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 21 in 1936. 01020301907: 121911: 141914: 181915: 161916: 181935: 161936: 211937: 141938: 181939: 101940: 181944: 151945: 171946: 181947: 71948: 181949: 9190719141916193619381940194519471949
Days per year at Merced Falls with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 21 in 1936.
Days with 10 mm (0.39 in) or more of precipitation per year at Merced Falls
YearDaysDecade average
19071212
19111416.5
19141816.5
19151616.5
19161816.5
19351615.8
19362115.8
19371415.8
19381815.8
19391015.8
19401814.6
19441514.6
19451714.6
19461814.6
1947714.6
19481814.6
1949914.6
First to last qualifying date each year at Merced Falls For each year, a bar from the first to the last day at Merced Falls meeting 10 mm (0.39 in). 1907: 5 January 1907 to 10 December 19071911: 10 January 1911 to 10 November 19111914: 1 January 1914 to 20 December 19141915: 4 January 1915 to 14 December 19151916: 4 January 1916 to 24 December 19161935: 8 January 1935 to 29 December 19351936: 2 January 1936 to 30 December 19361937: 28 January 1937 to 12 December 19371938: 15 January 1938 to 20 December 19381939: 5 January 1939 to 10 December 19391940: 2 January 1940 to 27 December 19401944: 2 January 1944 to 28 December 19441945: 1 February 1945 to 25 December 19451946: 4 January 1946 to 27 December 19461947: 28 January 1947 to 17 December 19471948: 5 February 1948 to 27 December 19481949: 20 January 1949 to 10 November 1949190719151936193919451948JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Merced Falls meeting 10 mm (0.39 in).
First to last qualifying date each year at Merced Falls
YearFirst dateLast date
19071907-01-051907-12-10
19111911-01-101911-11-10
19141914-01-011914-12-20
19151915-01-041915-12-14
19161916-01-041916-12-24
19351935-01-081935-12-29
19361936-01-021936-12-30
19371937-01-281937-12-12
19381938-01-151938-12-20
19391939-01-051939-12-10
19401940-01-021940-12-27
19441944-01-021944-12-28
19451945-02-011945-12-25
19461946-01-041946-12-27
19471947-01-281947-12-17
19481948-02-051948-12-27
19491949-01-201949-11-10

Every Fixed Threshold

Fixed thresholds at Merced Falls
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
10 mm (0.39 in): Days with 10 mm or more rain172119369
25 mm (0.98 in): Days with 25 mm or more rain15519361
50 mm (1.97 in): Days with 50 mm or more rain2219111

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1907.

Download the Data

  • Data for Merced Falls 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).