Addison Dam 45 Threshold Days by Year (USC00150031)

13 fixed thresholds counted per year at Addison Dam 45 (USC00150031): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Addison Dam 45 Thresholds

Addison Dam 45: days with 10 mm (0.39 in) or more of precipitation in 41 years, most in 1950 with 52.
Addison Dam 45: days with 25 mm (0.98 in) or more of precipitation in 41 years, most in 1950 with 20.
Addison Dam 45: days with 50 mm (1.97 in) or more of precipitation in 33 years, most in 1957 with 7.
Addison Dam 45: days with 10 cm (3.9 in) or more of snowfall in 8 years, most in 1964 with 2.
13 fixed thresholds have at least one qualifying day at Addison Dam 45.

Days with 10 mm (0.39 in) or more of precipitation

41 years with a qualifying day

Days per year at Addison Dam 45 with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 52 in 1950.

Days with 10 mm (0.39 in) or more of precipitation per year at Addison Dam 45
Year	Days	Decade average
1928	43	39
1929	35	39
1930	27	34.9
1931	37	34.9
1932	41	34.9
1933	40	34.9
1934	27	34.9
1935	42	34.9
1936	28	34.9
1937	35	34.9
1938	39	34.9
1939	33	34.9
1940	32	38.8
1941	31	38.8
1942	39	38.8
1943	37	38.8
1944	36	38.8
1945	48	38.8
1946	37	38.8
1947	42	38.8
1948	38	38.8
1949	48	38.8
1950	52	38.9
1951	51	38.9
1952	31	38.9
1953	31	38.9
1954	34	38.9
1955	37	38.9
1956	36	38.9
1957	35	38.9
1958	41	38.9
1959	41	38.9
1960	30	39.3
1961	49	39.3
1964	36	39.3
1965	33	39.3
1966	45	39.3
1967	44	39.3
1968	36	39.3
1969	41	39.3
1970	37	37

For each year, a bar from the first to the last day at Addison Dam 45 meeting 10 mm (0.39 in).

First to last qualifying date each year at Addison Dam 45
Year	First date	Last date
1928	1928-01-07	1928-12-18
1929	1929-01-01	1929-12-19
1930	1930-01-02	1930-12-25
1931	1931-01-06	1931-12-31
1932	1932-01-06	1932-12-31
1933	1933-01-18	1933-12-26
1934	1934-01-05	1934-12-26
1935	1935-01-01	1935-12-09
1936	1936-01-06	1936-12-31
1937	1937-01-02	1937-12-28
1938	1938-01-01	1938-12-27
1939	1939-01-05	1939-12-24
1940	1940-01-14	1940-12-28
1941	1941-01-17	1941-12-24
1942	1942-01-01	1942-12-30
1943	1943-02-01	1943-12-29
1944	1944-01-03	1944-12-28
1945	1945-01-01	1945-12-25
1946	1946-01-09	1946-12-29
1947	1947-01-02	1947-12-16
1948	1948-01-01	1948-12-29
1949	1949-01-05	1949-12-27
1950	1950-01-03	1950-12-07
1951	1951-01-03	1951-12-26
1952	1952-01-02	1952-12-31
1953	1953-01-07	1953-12-06
1954	1954-01-10	1954-12-29
1955	1955-01-05	1955-12-02
1956	1956-01-19	1956-12-23
1957	1957-01-09	1957-12-26
1958	1958-01-14	1958-12-24
1959	1959-01-01	1959-12-28
1960	1960-01-03	1960-12-21
1961	1961-01-15	1961-12-17
1964	1964-01-01	1964-12-25
1965	1965-01-09	1965-11-27
1966	1966-01-01	1966-12-28
1967	1967-01-26	1967-12-22
1968	1968-01-13	1968-12-28
1969	1969-01-17	1969-12-30
1970	1970-01-29	1970-12-22

Every Fixed Threshold

Fixed thresholds at Addison Dam 45
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	2	76	1960	56
35 C (95 F): Days	1	1	1960	1
90 F (32.2 C): Days	2	30	1960	6
0 C (32 F): Ice days (max	2	26	1960	21
0 C (32 F): Frost days (min	2	136	1960	97
-10 C (14 F): Days with min	2	17	1960	13
-20 C (-4 F): Days with min	1	2	1960	2
20 C (68 F): Tropical nights (min	2	9	1961	9
10 mm (0.39 in): Days with 10 mm or more rain	41	52	1950	37
25 mm (0.98 in): Days with 25 mm or more rain	41	20	1950	14
50 mm (1.97 in): Days with 50 mm or more rain	33	7	1957	6
100 mm (3.94 in): Days with 100 mm or more rain	4	2	1950	2
10 cm (3.9 in): Days with 10 cm or more snowfall	8	2	1964	2

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1960.

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Data for Addison Dam 45 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).

Addison Dam 45 Threshold Days by Year (USC00150031)

Key Facts for Addison Dam 45 Thresholds

Days with 10 mm (0.39 in) or more of precipitation

Every Fixed Threshold

Download the Data

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