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Built 2026-10-19 (19 October 2026)

Port O'Connor Threshold Days by Year (USC00417186)

15 fixed thresholds counted per year at Port O'Connor (USC00417186): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Port O'Connor Thresholds

  • Port O'Connor: days with 10 mm (0.39 in) or more of precipitation in 39 years, most in 2006 with 45.
  • Port O'Connor: days with 25 mm (0.98 in) or more of precipitation in 39 years, most in 2006 with 27.
  • Port O'Connor: days with 50 mm (1.97 in) or more of precipitation in 39 years, most in 2006 with 13.
  • Port O'Connor: days with a maximum temperature at or above 30 C (86 F) in 38 years, most in 2011 with 153.
  • 15 fixed thresholds have at least one qualifying day at Port O'Connor.
38 years with a qualifying day
Days at or above 30 C (86 F) per year at Port O'Connor Days per year at Port O'Connor with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 153 in 2011. 0501001502001949: 1171950: 1281951: 1171952: 1011953: 1211954: 1371955: 1201956: 1421957: 1081958: 1251959: 1191960: 1191962: 1241964: 1171965: 1201968: 1161969: 1341970: 1041971: 1251972: 1381973: 1391974: 1291975: 1231977: 1331978: 1291979: 1071980: 1381981: 1331982: 1311983: 1131984: 1181995: 1291997: 941998: 1272006: 1302008: 1262009: 1242011: 1531949195319571962196919731978198219972009
Days per year at Port O'Connor with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 153 in 2011.
Days at or above 30 C (86 F) per year at Port O'Connor
YearDaysDecade average
1949117117
1950128121.8
1951117121.8
1952101121.8
1953121121.8
1954137121.8
1955120121.8
1956142121.8
1957108121.8
1958125121.8
1959119121.8
1960119121.7
1962124121.7
1964117121.7
1965120121.7
1968116121.7
1969134121.7
1970104125.2
1971125125.2
1972138125.2
1973139125.2
1974129125.2
1975123125.2
1977133125.2
1978129125.2
1979107125.2
1980138126.6
1981133126.6
1982131126.6
1983113126.6
1984118126.6
1995129116.7
199794116.7
1998127116.7
2006130126.7
2008126126.7
2009124126.7
2011153153
First to last qualifying date each year at Port O'Connor For each year, a bar from the first to the last day at Port O'Connor meeting 30 C (86 F). 1949: 26 May 1949 to 24 October 19491950: 20 May 1950 to 31 October 19501951: 24 May 1951 to 7 October 19511952: 26 May 1952 to 3 October 19521953: 30 April 1953 to 3 October 19531954: 21 May 1954 to 17 October 19541955: 22 March 1955 to 13 October 19551956: 16 April 1956 to 31 October 19561957: 4 May 1957 to 23 September 19571958: 19 May 1958 to 11 October 19581959: 13 May 1959 to 13 October 19591960: 3 June 1960 to 14 October 19601962: 31 May 1962 to 21 October 19621964: 29 April 1964 to 5 October 19641965: 27 May 1965 to 17 October 19651968: 26 May 1968 to 15 October 19681969: 24 May 1969 to 14 November 19691970: 4 June 1970 to 25 October 19701971: 24 April 1971 to 2 November 19711972: 16 April 1972 to 1 November 19721973: 26 April 1973 to 9 November 19731974: 30 March 1974 to 4 November 19741975: 20 May 1975 to 24 October 19751977: 29 May 1977 to 22 October 19771978: 13 May 1978 to 14 October 19781979: 25 May 1979 to 22 October 19791980: 26 April 1980 to 19 October 19801981: 19 May 1981 to 18 October 19811982: 26 May 1982 to 20 October 19821983: 2 April 1983 to 28 October 19831984: 4 May 1984 to 31 December 19841995: 11 May 1995 to 9 October 19951997: 10 June 1997 to 2 October 19971998: 9 May 1998 to 2 November 19982006: 3 February 2006 to 18 December 20062008: 15 March 2008 to 17 October 20082009: 13 April 2009 to 14 October 20092011: 18 April 2011 to 23 November 201119491954195919681973197919842008JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Port O'Connor meeting 30 C (86 F).
First to last qualifying date each year at Port O'Connor
YearFirst dateLast date
19491949-05-261949-10-24
19501950-05-201950-10-31
19511951-05-241951-10-07
19521952-05-261952-10-03
19531953-04-301953-10-03
19541954-05-211954-10-17
19551955-03-221955-10-13
19561956-04-161956-10-31
19571957-05-041957-09-23
19581958-05-191958-10-11
19591959-05-131959-10-13
19601960-06-031960-10-14
19621962-05-311962-10-21
19641964-04-291964-10-05
19651965-05-271965-10-17
19681968-05-261968-10-15
19691969-05-241969-11-14
19701970-06-041970-10-25
19711971-04-241971-11-02
19721972-04-161972-11-01
19731973-04-261973-11-09
19741974-03-301974-11-04
19751975-05-201975-10-24
19771977-05-291977-10-22
19781978-05-131978-10-14
19791979-05-251979-10-22
19801980-04-261980-10-19
19811981-05-191981-10-18
19821982-05-261982-10-20
19831983-04-021983-10-28
19841984-05-041984-12-31
19951995-05-111995-10-09
19971997-06-101997-10-02
19981998-05-091998-11-02
20062006-02-032006-12-18
20082008-03-152008-10-17
20092009-04-132009-10-14
20112011-04-182011-11-23

Every Fixed Threshold

Fixed thresholds at Port O'Connor
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days381532011153
35 C (95 F): Days2720201120
40 C (104 F): Days2320113
90 F (32.2 C): Days38103198287
100 F (37.8 C): Days4320113
0 C (32 F): Ice days (max4419513
0 C (32 F): Frost days (min3215195114
-10 C (14 F): Days with min1119831
20 C (68 F): Tropical nights (min361911950179
25 C (77 F): Days with min36106200988
10 mm (0.39 in): Days with 10 mm or more rain3945200615
25 mm (0.98 in): Days with 25 mm or more rain392720067
50 mm (1.97 in): Days with 50 mm or more rain391320062
100 mm (3.94 in): Days with 100 mm or more rain20520061
200 mm (7.87 in): Days with 200 mm or more rain1119841

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1949.

Download the Data

  • Data for Port O'Connor 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).