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

Occidental Threshold Days by Year (USC00046370)

13 fixed thresholds counted per year at Occidental (USC00046370): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Occidental Thresholds

  • Occidental: days with 10 mm (0.39 in) or more of precipitation in 57 years, most in 1983 with 73.
  • Occidental: days with 25 mm (0.98 in) or more of precipitation in 57 years, most in 1983 with 45.
  • Occidental: days with 50 mm (1.97 in) or more of precipitation in 56 years, most in 1983 with 18.
  • Occidental: days with 100 mm (3.94 in) or more of precipitation in 38 years, most in 1970 with 4.
  • 13 fixed thresholds have at least one qualifying day at Occidental.
4 years with a qualifying day
Days at or above 30 C (86 F) per year at Occidental Days per year at Occidental with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 53 in 2020. 02040602000: 192001: 312013: 192020: 532000200120132020
Days per year at Occidental with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 53 in 2020.
Days at or above 30 C (86 F) per year at Occidental
YearDaysDecade average
20001925
20013125
20131919
20205353
First to last qualifying date each year at Occidental For each year, a bar from the first to the last day at Occidental meeting 30 C (86 F). 2000: 21 May 2000 to 30 September 20002001: 7 May 2001 to 14 October 20012013: 2 May 2013 to 9 September 20132020: 25 May 2020 to 19 October 20202000200120132020JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Occidental meeting 30 C (86 F).
First to last qualifying date each year at Occidental
YearFirst dateLast date
20002000-05-212000-09-30
20012001-05-072001-10-14
20132013-05-022013-09-09
20202020-05-252020-10-19

Every Fixed Threshold

Fixed thresholds at Occidental
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days453202053
35 C (95 F): Days4920209
40 C (104 F): Days1120201
90 F (32.2 C): Days425202025
100 F (37.8 C): Days2220001
0 C (32 F): Frost days (min31020132
20 C (68 F): Tropical nights (min414202014
25 C (77 F): Days with min2320203
10 mm (0.39 in): Days with 10 mm or more rain5773198319
25 mm (0.98 in): Days with 25 mm or more rain574519837
50 mm (1.97 in): Days with 50 mm or more rain561819834
100 mm (3.94 in): Days with 100 mm or more rain38419703
200 mm (7.87 in): Days with 200 mm or more rain1119661

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 2000.

Download the Data

  • Data for Occidental 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).