Built 2026-10-16 (16 October 2026)

Onion Park Threshold Days by Year

10 fixed thresholds counted per year at Onion Park (USS0010C22S): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Onion Park Thresholds

  • Onion Park: days with a maximum temperature at or below 0 C (32 F) in 25 years, most in 2022 with 125.
  • Onion Park: nights with a minimum temperature at or below 0 C (32 F) in 25 years, most in 2005 with 259.
  • Onion Park: nights with a minimum temperature at or below -10 C (14 F) in 25 years, most in 2008 with 118.
  • Onion Park: nights with a minimum temperature at or below -20 C (-4 F) in 25 years, most in 2014 with 34.
  • 10 fixed thresholds have at least one qualifying day at Onion Park.
6 years with a qualifying day
Days at or above 30 C (86 F) per year at Onion Park Days per year at Onion Park with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 3 in 2002. 01232002: 32007: 32018: 22021: 12022: 12026: 1200220072018202120222026
Days per year at Onion Park with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 3 in 2002.
Days at or above 30 C (86 F) per year at Onion Park
YearDaysDecade average
200233
200733
201822
202111
202211
202611
First to last qualifying date each year at Onion Park For each year, a bar from the first to the last day at Onion Park meeting 30 C (86 F). 2002: 12 July 2002 to 14 July 20022007: 6 July 2007 to 23 July 20072018: 10 August 2018 to 11 August 20182021: 14 June 2021 to 14 June 20212022: 3 September 2022 to 3 September 20222026: 12 July 2026 to 12 July 2026200220072018202120222026JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Onion Park meeting 30 C (86 F).
First to last qualifying date each year at Onion Park
YearFirst dateLast date
20022002-07-122002-07-14
20072007-07-062007-07-23
20182018-08-102018-08-11
20212021-06-142021-06-14
20222022-09-032022-09-03
20262026-07-122026-07-12

Every Fixed Threshold

Fixed thresholds at Onion Park
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days6320021
0 C (32 F): Ice days (max25125202256
0 C (32 F): Frost days (min252592005154
-10 C (14 F): Days with min25118200841
-20 C (-4 F): Days with min253420148
-30 C (-22 F): Days with min17620142
-40 C (-40 F): Days with min1220242
10 mm (0.39 in): Days with 10 mm or more rain2540201025
25 mm (0.98 in): Days with 25 mm or more rain24620233
50 mm (1.97 in): Days with 50 mm or more rain5220242

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 2002.

Download the Data

  • Data for Onion Park 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 2026-10-14 (14 October 2026). Threshold counts are computed by this site.

Data as of . Last revised (2026-10-14).