Built 2026-10-18 (18 October 2026)

South Falls Threshold Days by Year

5 fixed thresholds counted per year at South Falls (CA006117943): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for South Falls Thresholds

  • South Falls: days with 10 mm (0.39 in) or more of precipitation in 16 years, most in 1965 with 41.
  • South Falls: days with 25 mm (0.98 in) or more of precipitation in 16 years, most in 1923 with 10.
  • South Falls: days with 10 cm (3.9 in) or more of snowfall in 16 years, most in 1922 with 15.
  • South Falls: days with 25 cm (9.8 in) or more of snowfall in 10 years, most in 1922 with 2.
  • 5 fixed thresholds have at least one qualifying day at South Falls.
16 years with a qualifying day
Days with 10 mm (0.39 in) or more of precipitation per year at South Falls Days per year at South Falls with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 41 in 1965. 02040601921: 371922: 361923: 381924: 371957: 371958: 221959: 381960: 391961: 291962: 351963: 331964: 251965: 411966: 341967: 401968: 2119211923195719591961196319651967
Days per year at South Falls with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 41 in 1965.
Days with 10 mm (0.39 in) or more of precipitation per year at South Falls
YearDaysDecade average
19213737
19223637
19233837
19243737
19573732.3
19582232.3
19593832.3
19603933
19612933
19623533
19633333
19642533
19654133
19663433
19674033
19682133
First to last qualifying date each year at South Falls For each year, a bar from the first to the last day at South Falls meeting 10 mm (0.39 in). 1921: 16 January 1921 to 18 December 19211922: 8 January 1922 to 31 December 19221923: 24 January 1923 to 28 December 19231924: 3 January 1924 to 25 December 19241957: 4 January 1957 to 25 December 19571958: 14 May 1958 to 15 December 19581959: 1 January 1959 to 29 December 19591960: 4 January 1960 to 28 December 19601961: 27 January 1961 to 30 December 19611962: 6 January 1962 to 25 December 19621963: 12 January 1963 to 29 December 19631964: 9 January 1964 to 24 December 19641965: 2 January 1965 to 24 December 19651966: 22 January 1966 to 7 December 19661967: 16 January 1967 to 21 December 19671968: 1 January 1968 to 27 December 196819211923195719591961196319651967JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at South Falls meeting 10 mm (0.39 in).
First to last qualifying date each year at South Falls
YearFirst dateLast date
19211921-01-161921-12-18
19221922-01-081922-12-31
19231923-01-241923-12-28
19241924-01-031924-12-25
19571957-01-041957-12-25
19581958-05-141958-12-15
19591959-01-011959-12-29
19601960-01-041960-12-28
19611961-01-271961-12-30
19621962-01-061962-12-25
19631963-01-121963-12-29
19641964-01-091964-12-24
19651965-01-021965-12-24
19661966-01-221966-12-07
19671967-01-161967-12-21
19681968-01-011968-12-27

Every Fixed Threshold

Fixed thresholds at South Falls
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
10 mm (0.39 in): Days with 10 mm or more rain1641196521
25 mm (0.98 in): Days with 25 mm or more rain161019235
50 mm (1.97 in): Days with 50 mm or more rain4119211
10 cm (3.9 in): Days with 10 cm or more snowfall161519227
25 cm (9.8 in): Days with 25 cm or more snowfall10219222

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1921.

Download the Data

  • Data for South 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 2026-10-16 (16 October 2026). Threshold counts are computed by this site.

Data as of . Last revised (2025-12-31).