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

Rosenberg Threshold Days by Year (USC00417756)

15 fixed thresholds counted per year at Rosenberg (USC00417756): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Rosenberg Thresholds

  • Rosenberg: days with 10 mm (0.39 in) or more of precipitation in 31 years, most in 1903 with 44.
  • Rosenberg: days with 25 mm (0.98 in) or more of precipitation in 31 years, most in 1959 with 20.
  • Rosenberg: days with 50 mm (1.97 in) or more of precipitation in 26 years, most in 1905 with 8.
  • Rosenberg: days with 100 mm (3.94 in) or more of precipitation in 10 years, most in 1907 with 3.
  • 15 fixed thresholds have at least one qualifying day at Rosenberg.
8 years with a qualifying day
Days at or above 30 C (86 F) per year at Rosenberg Days per year at Rosenberg with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 168 in 1956. 0501001502001951: 1531952: 1441953: 1561954: 1601956: 1681957: 1261958: 1471959: 14219511952195319541956195719581959
Days per year at Rosenberg with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 168 in 1956.
Days at or above 30 C (86 F) per year at Rosenberg
YearDaysDecade average
1951153149.5
1952144149.5
1953156149.5
1954160149.5
1956168149.5
1957126149.5
1958147149.5
1959142149.5
First to last qualifying date each year at Rosenberg For each year, a bar from the first to the last day at Rosenberg meeting 30 C (86 F). 1951: 7 March 1951 to 23 November 19511952: 1 May 1952 to 16 November 19521953: 18 March 1953 to 25 October 19531954: 27 February 1954 to 25 October 19541956: 11 March 1956 to 4 November 19561957: 10 February 1957 to 3 November 19571958: 3 April 1958 to 25 October 19581959: 28 April 1959 to 26 October 195919511952195319541956195719581959JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Rosenberg meeting 30 C (86 F).
First to last qualifying date each year at Rosenberg
YearFirst dateLast date
19511951-03-071951-11-23
19521952-05-011952-11-16
19531953-03-181953-10-25
19541954-02-271954-10-25
19561956-03-111956-11-04
19571957-02-101957-11-03
19581958-04-031958-10-25
19591959-04-281959-10-26

Every Fixed Threshold

Fixed thresholds at Rosenberg
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days81681956142
35 C (95 F): Days87519569
40 C (104 F): Days2119511
90 F (32.2 C): Days8131195692
100 F (37.8 C): Days72319513
0 C (32 F): Ice days (max1319513
0 C (32 F): Frost days (min828195114
-10 C (14 F): Days with min1219512
20 C (68 F): Tropical nights (min81381958138
25 C (77 F): Days with min4419541
10 mm (0.39 in): Days with 10 mm or more rain3144190339
25 mm (0.98 in): Days with 25 mm or more rain3120195920
50 mm (1.97 in): Days with 50 mm or more rain26819054
100 mm (3.94 in): Days with 100 mm or more rain10319071
200 mm (7.87 in): Days with 200 mm or more rain2119141

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1951.

Download the Data

  • Data for Rosenberg 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).