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

Patterson Threshold Days by Year (USC00316602)

14 fixed thresholds counted per year at Patterson (USC00316602): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Patterson Thresholds

  • Patterson: days with 10 mm (0.39 in) or more of precipitation in 72 years, most in 1901 with 56.
  • Patterson: days with 25 mm (0.98 in) or more of precipitation in 72 years, most in 1901 with 30.
  • Patterson: days with 50 mm (1.97 in) or more of precipitation in 68 years, most in 1901 with 12.
  • Patterson: days with 100 mm (3.94 in) or more of precipitation in 16 years, most in 1901 with 3.
  • 14 fixed thresholds have at least one qualifying day at Patterson.
4 years with a qualifying day
Days at or above 30 C (86 F) per year at Patterson Days per year at Patterson with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 46 in 1900. 02040601899: 401900: 461901: 211902: 311899190019011902
Days per year at Patterson with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 46 in 1900.
Days at or above 30 C (86 F) per year at Patterson
YearDaysDecade average
18994040
19004632.7
19012132.7
19023132.7
First to last qualifying date each year at Patterson For each year, a bar from the first to the last day at Patterson meeting 30 C (86 F). 1899: 3 May 1899 to 6 September 18991900: 14 May 1900 to 28 September 19001901: 3 May 1901 to 10 August 19011902: 3 May 1902 to 1 September 19021899190019011902JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Patterson meeting 30 C (86 F).
First to last qualifying date each year at Patterson
YearFirst dateLast date
18991899-05-031899-09-06
19001900-05-141900-09-28
19011901-05-031901-08-10
19021902-05-031902-09-01

Every Fixed Threshold

Fixed thresholds at Patterson
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days446190031
35 C (95 F): Days3318991
90 F (32.2 C): Days429190013
0 C (32 F): Ice days (max411189910
0 C (32 F): Frost days (min41041899104
-10 C (14 F): Days with min41319005
20 C (68 F): Tropical nights (min424190113
10 mm (0.39 in): Days with 10 mm or more rain7256190140
25 mm (0.98 in): Days with 25 mm or more rain7230190115
50 mm (1.97 in): Days with 50 mm or more rain681219013
100 mm (3.94 in): Days with 100 mm or more rain16319011
200 mm (7.87 in): Days with 200 mm or more rain1119701
10 cm (3.9 in): Days with 10 cm or more snowfall10319891
25 cm (9.8 in): Days with 25 cm or more snowfall2119791

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1899.

Download the Data

  • Data for Patterson 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).