Meridian 1 W Threshold Days by Year

17 fixed thresholds counted per year at Meridian 1 W (USC00105841): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Meridian 1 W Thresholds

Meridian 1 W: days with a maximum temperature at or above 30 C (86 F) in 48 years, most in 1931 with 102.
Meridian 1 W: days with a maximum temperature at or above 35 C (95 F) in 48 years, most in 1930 with 50.
Meridian 1 W: days with a maximum temperature at or above 90 F (32.2 C) in 48 years, most in 1930 with 83.
Meridian 1 W: days with a maximum temperature at or below 0 C (32 F) in 48 years, most in 1949 with 42.
17 fixed thresholds have at least one qualifying day at Meridian 1 W.

Days at or above 30 C (86 F)

48 years with a qualifying day

Days per year at Meridian 1 W with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 102 in 1931.

Days at or above 30 C (86 F) per year at Meridian 1 W
Year	Days	Decade average
1911	62	63.9
1912	48	63.9
1913	60	63.9
1914	74	63.9
1915	52	63.9
1916	47	63.9
1917	80	63.9
1918	74	63.9
1919	78	63.9
1920	56	73.4
1921	66	73.4
1922	86	73.4
1923	71	73.4
1924	85	73.4
1925	72	73.4
1926	74	73.4
1927	61	73.4
1928	82	73.4
1929	81	73.4
1930	95	79.2
1931	102	79.2
1933	56	79.2
1934	90	79.2
1935	70	79.2
1936	83	79.2
1937	75	79.2
1938	63	79.2
1939	79	79.2
1940	93	63
1941	55	63
1942	62	63
1943	58	63
1944	50	63
1945	63	63
1946	59	63
1947	66	63
1948	54	63
1949	70	63
1950	60	59.7
1951	50	59.7
1952	65	59.7
1953	53	59.7
1954	58	59.7
1955	65	59.7
1956	54	59.7
1957	64	59.7
1958	74	59.7
1959	54	59.7

For each year, a bar from the first to the last day at Meridian 1 W meeting 30 C (86 F).

First to last qualifying date each year at Meridian 1 W
Year	First date	Last date
1911	1911-05-04	1911-09-12
1912	1912-06-04	1912-09-30
1913	1913-05-06	1913-09-20
1914	1914-05-07	1914-09-24
1915	1915-04-28	1915-09-18
1916	1916-04-26	1916-09-18
1917	1917-05-14	1917-09-20
1918	1918-05-02	1918-09-28
1919	1919-05-14	1919-09-16
1920	1920-06-13	1920-10-05
1921	1921-06-09	1921-08-31
1922	1922-05-24	1922-10-10
1923	1923-05-08	1923-09-14
1924	1924-05-09	1924-09-22
1925	1925-05-05	1925-09-24
1926	1926-04-28	1926-09-09
1927	1927-04-25	1927-10-16
1928	1928-05-05	1928-09-25
1929	1929-05-20	1929-09-17
1930	1930-05-03	1930-09-21
1931	1931-05-06	1931-09-28
1933	1933-05-25	1933-08-28
1934	1934-04-21	1934-10-01
1935	1935-05-22	1935-10-02
1936	1936-04-17	1936-10-10
1937	1937-05-03	1937-09-18
1938	1938-05-24	1938-09-23
1939	1939-04-27	1939-09-23
1940	1940-05-09	1940-09-26
1941	1941-05-11	1941-08-22
1942	1942-04-21	1942-10-10
1943	1943-06-17	1943-10-01
1944	1944-05-12	1944-09-12
1945	1945-05-03	1945-09-14
1946	1946-04-25	1946-09-30
1947	1947-05-02	1947-09-25
1948	1948-05-16	1948-09-14
1949	1949-05-10	1949-09-26
1950	1950-06-04	1950-10-13
1951	1951-05-22	1951-10-10
1952	1952-05-24	1952-09-26
1953	1953-07-02	1953-09-15
1954	1954-05-15	1954-09-21
1955	1955-06-07	1955-09-13
1956	1956-05-17	1956-09-18
1957	1957-06-01	1957-09-30
1958	1958-05-18	1958-09-11
1959	1959-05-13	1959-09-12

Every Fixed Threshold

Fixed thresholds at Meridian 1 W
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	48	102	1931	54
35 C (95 F): Days	48	50	1930	23
40 C (104 F): Days	18	8	1931	2
90 F (32.2 C): Days	48	83	1930	44
100 F (37.8 C): Days	38	26	1931	6
110 F (43.3 C): Days	2	1	1930	1
0 C (32 F): Ice days (max	48	42	1949	4
0 C (32 F): Frost days (min	48	173	1929	135
-10 C (14 F): Days with min	47	53	1929	14
-20 C (-4 F): Days with min	30	11	1924	4
-30 C (-22 F): Days with min	3	3	1924	1
20 C (68 F): Tropical nights (min	25	3	1954	2
25 C (77 F): Days with min	1	1	1929	1
10 mm (0.39 in): Days with 10 mm or more rain	47	14	1930	3
25 mm (0.98 in): Days with 25 mm or more rain	14	3	1938	1
10 cm (3.9 in): Days with 10 cm or more snowfall	13	4	1916	1
25 cm (9.8 in): Days with 25 cm or more snowfall	2	1	1913	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1911.

Download the Data

Data for Meridian 1 W 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 2026-10-14 (14 October 2026). Threshold counts are computed by this site.

Data as of 2025-12-31. Last revised 31 December 2025 (2025-12-31).

Meridian 1 W Threshold Days by Year

Key Facts for Meridian 1 W Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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