Arlington Threshold Days by Year

18 fixed thresholds counted per year at Arlington (USC00470307): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Arlington Thresholds

Arlington: days with 10 mm (0.39 in) or more of precipitation in 38 years, most in 1959 with 36.
Arlington: days with 25 mm (0.98 in) or more of precipitation in 37 years, most in 1950 with 13.
Arlington: days with a maximum temperature at or above 30 C (86 F) in 36 years, most in 1934 with 59.
Arlington: days with a maximum temperature at or below 0 C (32 F) in 36 years, most in 1960 with 87.
18 fixed thresholds have at least one qualifying day at Arlington.

Days at or above 30 C (86 F)

36 years with a qualifying day

Days per year at Arlington with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 59 in 1934.

Days at or above 30 C (86 F) per year at Arlington
Year	Days	Decade average
1932	24	40.6
1933	50	40.6
1934	59	40.6
1935	27	40.6
1936	51	40.6
1937	49	40.6
1938	19	40.6
1939	46	40.6
1940	26	30.1
1941	35	30.1
1942	16	30.1
1943	32	30.1
1944	43	30.1
1946	26	30.1
1947	37	30.1
1948	33	30.1
1949	23	30.1
1950	5	26
1951	5	26
1953	35	26
1954	31	26
1955	52	26
1956	23	26
1957	24	26
1958	26	26
1959	33	26
1960	13	24.6
1961	32	24.6
1962	24	24.6
1963	41	24.6
1964	38	24.6
1965	23	24.6
1967	15	24.6
1968	26	24.6
1969	9	24.6
1970	24	24

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

First to last qualifying date each year at Arlington
Year	First date	Last date
1932	1932-06-16	1932-09-19
1933	1933-06-03	1933-09-09
1934	1934-05-04	1934-08-19
1935	1935-07-03	1935-09-24
1936	1936-05-06	1936-09-14
1937	1937-05-30	1937-09-23
1938	1938-06-22	1938-09-10
1939	1939-05-19	1939-09-28
1940	1940-06-02	1940-09-20
1941	1941-05-20	1941-09-21
1942	1942-05-29	1942-09-01
1943	1943-06-12	1943-08-31
1944	1944-05-30	1944-09-04
1946	1946-06-16	1946-09-07
1947	1947-06-28	1947-09-19
1948	1948-06-02	1948-09-20
1949	1949-05-05	1949-08-25
1950	1950-05-24	1950-08-16
1951	1951-07-21	1951-07-26
1953	1953-05-30	1953-10-02
1954	1954-06-11	1954-09-07
1955	1955-05-23	1955-09-19
1956	1956-05-22	1956-08-28
1957	1957-06-16	1957-09-02
1958	1958-06-30	1958-09-03
1959	1959-05-02	1959-09-09
1960	1960-06-15	1960-09-08
1961	1961-06-10	1961-09-11
1962	1962-05-16	1962-08-30
1963	1963-06-02	1963-10-06
1964	1964-05-22	1964-09-09
1965	1965-05-25	1965-08-17
1967	1967-05-26	1967-07-31
1968	1968-06-05	1968-08-24
1969	1969-05-29	1969-08-31
1970	1970-05-21	1970-09-08

Every Fixed Threshold

Fixed thresholds at Arlington
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	36	59	1934	24
35 C (95 F): Days	19	15	1936	2
40 C (104 F): Days	1	4	1936	4
90 F (32.2 C): Days	34	35	1934	10
100 F (37.8 C): Days	5	10	1936	1
0 C (32 F): Ice days (max	36	87	1960	71
0 C (32 F): Frost days (min	36	168	1933	155
-10 C (14 F): Days with min	36	73	1950	71
-20 C (-4 F): Days with min	36	34	1963	19
-30 C (-22 F): Days with min	8	4	1936	1
20 C (68 F): Tropical nights (min	36	25	1955	8
25 C (77 F): Days with min	2	2	1964	2
10 mm (0.39 in): Days with 10 mm or more rain	38	36	1959	23
25 mm (0.98 in): Days with 25 mm or more rain	37	13	1950	11
50 mm (1.97 in): Days with 50 mm or more rain	18	4	1950	1
100 mm (3.94 in): Days with 100 mm or more rain	3	1	1940	1
10 cm (3.9 in): Days with 10 cm or more snowfall	19	7	1936	2
25 cm (9.8 in): Days with 25 cm or more snowfall	2	1	1936	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1932.

Download the Data

Data for Arlington 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).

Arlington Threshold Days by Year

Key Facts for Arlington Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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