Stewart Threshold Days by Year (USC00218025)

18 fixed thresholds counted per year at Stewart (USC00218025): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Stewart Thresholds

Stewart: days with 10 mm (0.39 in) or more of precipitation in 41 years, most in 1983 with 36.
Stewart: days with 25 mm (0.98 in) or more of precipitation in 41 years, most in 1971 with 12.
Stewart: days with a maximum temperature at or above 30 C (86 F) in 40 years, most in 1976 with 71.
Stewart: days with a maximum temperature at or above 90 F (32.2 C) in 40 years, most in 1976 with 46.
18 fixed thresholds have at least one qualifying day at Stewart.

Days at or above 30 C (86 F)

40 years with a qualifying day

Days per year at Stewart with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 71 in 1976.

Days at or above 30 C (86 F) per year at Stewart
Year	Days	Decade average
1958	28	37.5
1959	47	37.5
1960	28	29.4
1961	34	29.4
1962	11	29.4
1963	30	29.4
1966	42	29.4
1967	22	29.4
1968	31	29.4
1969	37	29.4
1970	59	44.7
1971	28	44.7
1972	38	44.7
1973	39	44.7
1974	47	44.7
1975	53	44.7
1976	71	44.7
1977	42	44.7
1978	44	44.7
1979	26	44.7
1980	58	36.3
1981	23	36.3
1982	26	36.3
1983	44	36.3
1984	23	36.3
1985	22	36.3
1986	22	36.3
1987	47	36.3
1988	65	36.3
1989	33	36.3
1990	27	27.4
1993	15	27.4
1994	19	27.4
1995	36	27.4
1996	24	27.4
1997	29	27.4
1998	42	27.4
2000	17	32
2001	43	32
2002	36	32

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

First to last qualifying date each year at Stewart
Year	First date	Last date
1958	1958-05-10	1958-10-15
1959	1959-05-01	1959-09-09
1960	1960-04-22	1960-09-07
1961	1961-05-11	1961-10-06
1962	1962-04-25	1962-08-21
1963	1963-05-07	1963-10-01
1966	1966-05-26	1966-08-31
1967	1967-05-18	1967-08-18
1968	1968-04-30	1968-08-24
1969	1969-05-27	1969-10-04
1970	1970-04-28	1970-10-06
1971	1971-05-14	1971-09-08
1972	1972-05-16	1972-08-30
1973	1973-06-01	1973-09-10
1974	1974-05-20	1974-10-10
1975	1975-05-17	1975-09-10
1976	1976-05-19	1976-10-01
1977	1977-04-09	1977-09-09
1978	1978-05-19	1978-09-12
1979	1979-05-17	1979-09-04
1980	1980-04-21	1980-10-07
1981	1981-05-31	1981-09-11
1982	1982-05-04	1982-08-22
1983	1983-06-11	1983-09-27
1984	1984-06-01	1984-09-20
1985	1985-04-19	1985-09-20
1986	1986-05-31	1986-08-17
1987	1987-04-18	1987-10-05
1988	1988-05-13	1988-09-19
1989	1989-06-07	1989-08-14
1990	1990-05-08	1990-09-14
1993	1993-06-11	1993-10-07
1994	1994-05-19	1994-09-15
1995	1995-06-04	1995-10-13
1996	1996-05-18	1996-09-05
1997	1997-06-02	1997-10-04
1998	1998-05-15	1998-09-20
2000	2000-05-05	2000-10-20
2001	2001-06-12	2001-10-03
2002	2002-04-16	2002-09-17

Every Fixed Threshold

Fixed thresholds at Stewart
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	40	71	1976	36
35 C (95 F): Days	31	27	1988	2
40 C (104 F): Days	1	2	1988	2
90 F (32.2 C): Days	40	46	1976	18
100 F (37.8 C): Days	8	7	1988	1
0 C (32 F): Ice days (max	40	103	1978	57
0 C (32 F): Frost days (min	37	183	2002	183
-10 C (14 F): Days with min	37	100	1978	63
-20 C (-4 F): Days with min	37	44	1978	4
-30 C (-22 F): Days with min	28	9	1982	8
20 C (68 F): Tropical nights (min	37	20	1983	18
25 C (77 F): Days with min	5	3	1988	1
10 mm (0.39 in): Days with 10 mm or more rain	41	36	1983	31
25 mm (0.98 in): Days with 25 mm or more rain	41	12	1971	12
50 mm (1.97 in): Days with 50 mm or more rain	29	3	1979	2
100 mm (3.94 in): Days with 100 mm or more rain	3	2	1997	2
10 cm (3.9 in): Days with 10 cm or more snowfall	38	7	1969	3
25 cm (9.8 in): Days with 25 cm or more snowfall	8	1	1968	1

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 Stewart 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).

Stewart Threshold Days by Year (USC00218025)

Key Facts for Stewart Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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