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

San Ardo Threshold Days by Year (USC00047716)

10 fixed thresholds counted per year at San Ardo (USC00047716): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for San Ardo Thresholds

  • San Ardo: days with 10 mm (0.39 in) or more of precipitation in 17 years, most in 1969 with 21.
  • San Ardo: days with 25 mm (0.98 in) or more of precipitation in 16 years, most in 1969 with 10.
  • San Ardo: days with 50 mm (1.97 in) or more of precipitation in 2 years, most in 1963 with 1.
  • San Ardo: days with a maximum temperature at or above 30 C (86 F) in 1 years, most in 1893 with 104.
  • 10 fixed thresholds have at least one qualifying day at San Ardo.
17 years with a qualifying day
Days with 10 mm (0.39 in) or more of precipitation per year at San Ardo Days per year at San Ardo with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 21 in 1969. 01020301893: 121960: 61961: 51962: 101963: 121964: 71965: 141966: 71967: 91969: 211970: 151971: 41972: 61973: 161974: 121975: 91976: 10189319611963196519671970197219741976
Days per year at San Ardo with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 21 in 1969.
Days with 10 mm (0.39 in) or more of precipitation per year at San Ardo
YearDaysDecade average
18931212
1960610.1
1961510.1
19621010.1
19631210.1
1964710.1
19651410.1
1966710.1
1967910.1
19692110.1
19701510.3
1971410.3
1972610.3
19731610.3
19741210.3
1975910.3
19761010.3
First to last qualifying date each year at San Ardo For each year, a bar from the first to the last day at San Ardo meeting 10 mm (0.39 in). 1893: 26 January 1893 to 22 December 18931960: 10 January 1960 to 13 November 19601961: 26 January 1961 to 2 December 19611962: 20 January 1962 to 17 December 19621963: 30 January 1963 to 20 November 19631964: 21 January 1964 to 19 December 19641965: 5 March 1965 to 31 December 19651966: 30 January 1966 to 7 December 19661967: 22 January 1967 to 30 November 19671969: 14 January 1969 to 25 December 19691970: 10 January 1970 to 21 December 19701971: 13 March 1971 to 22 December 19711972: 10 October 1972 to 16 November 19721973: 9 January 1973 to 1 December 19731974: 4 January 1974 to 28 December 19741975: 1 February 1975 to 30 October 19751976: 8 February 1976 to 30 December 1976189319621965196919721975JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at San Ardo meeting 10 mm (0.39 in).
First to last qualifying date each year at San Ardo
YearFirst dateLast date
18931893-01-261893-12-22
19601960-01-101960-11-13
19611961-01-261961-12-02
19621962-01-201962-12-17
19631963-01-301963-11-20
19641964-01-211964-12-19
19651965-03-051965-12-31
19661966-01-301966-12-07
19671967-01-221967-11-30
19691969-01-141969-12-25
19701970-01-101970-12-21
19711971-03-131971-12-22
19721972-10-101972-11-16
19731973-01-091973-12-01
19741974-01-041974-12-28
19751975-02-011975-10-30
19761976-02-081976-12-30

Every Fixed Threshold

Fixed thresholds at San Ardo
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days11041893104
35 C (95 F): Days137189337
40 C (104 F): Days1718937
90 F (32.2 C): Days167189367
100 F (37.8 C): Days119189319
110 F (43.3 C): Days1118931
0 C (32 F): Frost days (min138189338
10 mm (0.39 in): Days with 10 mm or more rain1721196910
25 mm (0.98 in): Days with 25 mm or more rain161019694
50 mm (1.97 in): Days with 50 mm or more rain2119631

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1893.

Download the Data

  • Data for San Ardo 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).