Houston San Jacinto da Threshold Days by Year (USC00414328)

14 fixed thresholds counted per year at Houston San Jacinto da (USC00414328): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Houston San Jacinto da Thresholds

Houston San Jacinto da: days with 10 mm (0.39 in) or more of precipitation in 38 years, most in 1957 with 44.
Houston San Jacinto da: days with 25 mm (0.98 in) or more of precipitation in 38 years, most in 1981 with 25.
Houston San Jacinto da: days with 50 mm (1.97 in) or more of precipitation in 38 years, most in 1981 with 13.
Houston San Jacinto da: days with 100 mm (3.94 in) or more of precipitation in 20 years, most in 1957 with 2.
14 fixed thresholds have at least one qualifying day at Houston San Jacinto da.

Days at or above 30 C (86 F)

12 years with a qualifying day

Days per year at Houston San Jacinto da with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 171 in 1994.

Days at or above 30 C (86 F) per year at Houston San Jacinto da
Year	Days	Decade average
1980	137	122.8
1981	140	122.8
1982	132	122.8
1983	104	122.8
1984	56	122.8
1985	132	122.8
1986	142	122.8
1987	139	122.8
1991	154	153.5
1992	129	153.5
1994	171	153.5
1995	160	153.5

For each year, a bar from the first to the last day at Houston San Jacinto da meeting 30 C (86 F).

First to last qualifying date each year at Houston San Jacinto da
Year	First date	Last date
1980	1980-03-11	1980-11-09
1981	1981-03-31	1981-10-17
1982	1982-03-19	1982-10-09
1983	1983-05-24	1983-10-19
1984	1984-03-28	1984-09-16
1985	1985-04-17	1985-10-25
1986	1986-02-19	1986-10-06
1987	1987-04-17	1987-10-27
1991	1991-04-12	1991-10-30
1992	1992-04-14	1992-11-04
1994	1994-02-20	1994-11-29
1995	1995-03-11	1995-12-04

Every Fixed Threshold

Fixed thresholds at Houston San Jacinto da
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	12	171	1994	160
35 C (95 F): Days	11	60	1995	60
90 F (32.2 C): Days	12	128	1994	118
100 F (37.8 C): Days	5	20	1980	8
0 C (32 F): Ice days (max	1	1	1983	1
0 C (32 F): Frost days (min	8	21	1983	11
-10 C (14 F): Days with min	1	2	1983	2
20 C (68 F): Tropical nights (min	8	150	1985	112
25 C (77 F): Days with min	7	9	1995	9
10 mm (0.39 in): Days with 10 mm or more rain	38	44	1957	35
25 mm (0.98 in): Days with 25 mm or more rain	38	25	1981	16
50 mm (1.97 in): Days with 50 mm or more rain	38	13	1981	4
100 mm (3.94 in): Days with 100 mm or more rain	20	2	1957	1
200 mm (7.87 in): Days with 200 mm or more rain	4	1	1961	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1980.

Download the Data

Data for Houston San Jacinto da 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 2025-12-31. Last revised 31 December 2025 (2025-12-31).

Houston San Jacinto da Threshold Days by Year (USC00414328)

Key Facts for Houston San Jacinto da Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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