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Data as of 2026-10-17
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Built 2026-10-19 (19 October 2026)

Houston Threshold Days by Year (CA001073615)

10 fixed thresholds counted per year at Houston (CA001073615): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Houston Thresholds

  • Houston: days with a maximum temperature at or below 0 C (32 F) in 6 years, most in 1958 with 79.
  • Houston: nights with a minimum temperature at or below 0 C (32 F) in 5 years, most in 1959 with 236.
  • Houston: nights with a minimum temperature at or below -10 C (14 F) in 5 years, most in 1959 with 78.
  • Houston: nights with a minimum temperature at or below -20 C (-4 F) in 5 years, most in 1959 with 27.
  • 10 fixed thresholds have at least one qualifying day at Houston.
4 years with a qualifying day
Days at or above 30 C (86 F) per year at Houston Days per year at Houston with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 8 in 1958. 024681958: 81960: 51961: 61962: 41958196019611962
Days per year at Houston with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 8 in 1958.
Days at or above 30 C (86 F) per year at Houston
YearDaysDecade average
195888
196055
196165
196245
First to last qualifying date each year at Houston For each year, a bar from the first to the last day at Houston meeting 30 C (86 F). 1958: 27 May 1958 to 28 July 19581960: 29 July 1960 to 10 August 19601961: 12 July 1961 to 20 August 19611962: 23 July 1962 to 31 July 19621958196019611962JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Houston meeting 30 C (86 F).
First to last qualifying date each year at Houston
YearFirst dateLast date
19581958-05-271958-07-28
19601960-07-291960-08-10
19611961-07-121961-08-20
19621962-07-231962-07-31

Every Fixed Threshold

Fixed thresholds at Houston
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days4819584
90 F (32.2 C): Days3319601
0 C (32 F): Ice days (max679195860
0 C (32 F): Frost days (min52361959210
-10 C (14 F): Days with min578195961
-20 C (-4 F): Days with min527195912
-30 C (-22 F): Days with min41219592
10 mm (0.39 in): Days with 10 mm or more rain517195912
25 mm (0.98 in): Days with 25 mm or more rain5419624
10 cm (3.9 in): Days with 10 cm or more snowfall5519625

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1958.

Download the Data

  • Data for Houston 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 (2026-10-17).