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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 (USC00096838)

12 fixed thresholds counted per year at Patterson (USC00096838): 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 39 years, most in 1964 with 51.
  • Patterson: days with 25 mm (0.98 in) or more of precipitation in 39 years, most in 1964 with 24.
  • Patterson: days with 50 mm (1.97 in) or more of precipitation in 39 years, most in 1964 with 11.
  • Patterson: days with 100 mm (3.94 in) or more of precipitation in 13 years, most in 1964 with 2.
  • 12 fixed thresholds have at least one qualifying day at Patterson.
9 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 152 in 2012. 0501001502002005: 1092006: 1422008: 1092009: 1232010: 1402011: 1502012: 1522013: 1352014: 146200520062008200920102011201220132014
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 152 in 2012.
Days at or above 30 C (86 F) per year at Patterson
YearDaysDecade average
2005109120.8
2006142120.8
2008109120.8
2009123120.8
2010140144.6
2011150144.6
2012152144.6
2013135144.6
2014146144.6
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). 2005: 15 May 2005 to 24 October 20052006: 29 March 2006 to 23 October 20062008: 13 April 2008 to 21 October 20082009: 24 April 2009 to 1 November 20092010: 3 April 2010 to 29 October 20102011: 23 March 2011 to 18 October 20112012: 10 March 2012 to 16 October 20122013: 10 April 2013 to 21 October 20132014: 3 April 2014 to 29 October 201420052008201020122014JanFebMarAprMayJunJulAugSepOctNovDec
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
20052005-05-152005-10-24
20062006-03-292006-10-23
20082008-04-132008-10-21
20092009-04-242009-11-01
20102010-04-032010-10-29
20112011-03-232011-10-18
20122012-03-102012-10-16
20132013-04-102013-10-21
20142014-04-032014-10-29

Every Fixed Threshold

Fixed thresholds at Patterson
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days91522012146
35 C (95 F): Days966201136
90 F (32.2 C): Days91202011109
100 F (37.8 C): Days3720113
0 C (32 F): Ice days (max1120141
0 C (32 F): Frost days (min874201037
20 C (68 F): Tropical nights (min81142013106
25 C (77 F): Days with min5420112
10 mm (0.39 in): Days with 10 mm or more rain3951196441
25 mm (0.98 in): Days with 25 mm or more rain3924196418
50 mm (1.97 in): Days with 50 mm or more rain391119643
100 mm (3.94 in): Days with 100 mm or more rain13219641

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 2005.

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).