Fernbank Threshold Days by Year (ASN00085027)

4 fixed thresholds counted per year at Fernbank (ASN00085027): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Fernbank Thresholds

Fernbank: days with 10 mm (0.39 in) or more of precipitation in 57 years, most in 1952 with 36.
Fernbank: days with 25 mm (0.98 in) or more of precipitation in 57 years, most in 1935 with 12.
Fernbank: days with 50 mm (1.97 in) or more of precipitation in 43 years, most in 1950 with 4.
Fernbank: days with 100 mm (3.94 in) or more of precipitation in 8 years, most in 1919 with 1.
4 fixed thresholds have at least one qualifying day at Fernbank.

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

57 years with a qualifying day

Days per year at Fernbank with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 36 in 1952.

Days with 10 mm (0.39 in) or more of precipitation per year at Fernbank
Year	Days	Decade average
1909	20	20
1910	19	17.8
1911	27	17.8
1912	16	17.8
1913	16	17.8
1914	9	17.8
1915	9	17.8
1916	23	17.8
1917	17	17.8
1918	21	17.8
1919	21	17.8
1920	16	17
1921	15	17
1922	16	17
1923	21	17
1925	26	17
1926	14	17
1927	14	17
1928	19	17
1929	12	17
1930	21	19.4
1931	16	19.4
1932	20	19.4
1933	15	19.4
1934	29	19.4
1935	25	19.4
1936	16	19.4
1937	15	19.4
1938	13	19.4
1939	24	19.4
1940	9	18.3
1941	22	18.3
1942	16	18.3
1943	20	18.3
1944	12	18.3
1945	14	18.3
1946	23	18.3
1947	18	18.3
1948	20	18.3
1949	29	18.3
1950	30	25.3
1951	24	25.3
1952	36	25.3
1953	21	25.3
1954	28	25.3
1955	23	25.3
1956	31	25.3
1957	19	25.3
1958	20	25.3
1959	21	25.3
1960	26	18.9
1961	24	18.9
1962	12	18.9
1963	19	18.9
1964	14	18.9
1965	10	18.9
1966	27	18.9

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

First to last qualifying date each year at Fernbank
Year	First date	Last date
1909	1909-01-05	1909-12-23
1910	1910-01-11	1910-12-18
1911	1911-01-12	1911-12-13
1912	1912-02-08	1912-12-07
1913	1913-03-06	1913-11-04
1914	1914-01-26	1914-12-30
1915	1915-01-02	1915-10-24
1916	1916-01-29	1916-12-15
1917	1917-01-03	1917-12-31
1918	1918-01-30	1918-12-24
1919	1919-02-18	1919-12-30
1920	1920-01-22	1920-12-25
1921	1921-02-16	1921-12-04
1922	1922-01-08	1922-12-26
1923	1923-01-18	1923-12-27
1925	1925-01-07	1925-12-25
1926	1926-01-08	1926-11-17
1927	1927-01-06	1927-11-14
1928	1928-01-28	1928-12-24
1929	1929-01-26	1929-12-16
1930	1930-02-20	1930-12-25
1931	1931-01-26	1931-12-22
1932	1932-02-14	1932-12-23
1933	1933-01-26	1933-12-15
1934	1934-01-06	1934-12-30
1935	1935-01-06	1935-12-27
1936	1936-01-04	1936-12-15
1937	1937-01-02	1937-12-27
1938	1938-01-15	1938-11-01
1939	1939-01-17	1939-12-05
1940	1940-04-01	1940-12-20
1941	1941-01-04	1941-12-21
1942	1942-01-20	1942-12-01
1943	1943-01-23	1943-12-06
1944	1944-03-10	1944-10-16
1945	1945-01-11	1945-12-28
1946	1946-01-18	1946-12-29
1947	1947-02-08	1947-12-26
1948	1948-01-02	1948-12-30
1949	1949-01-01	1949-12-20
1950	1950-02-02	1950-12-30
1951	1951-01-08	1951-11-28
1952	1952-01-05	1952-12-27
1953	1953-01-06	1953-11-24
1954	1954-01-28	1954-12-13
1955	1955-02-11	1955-12-31
1956	1956-01-10	1956-12-16
1957	1957-01-20	1957-12-31
1958	1958-01-30	1958-12-13
1959	1959-01-26	1959-12-26
1960	1960-01-23	1960-12-16
1961	1961-01-01	1961-12-18
1962	1962-01-20	1962-12-07
1963	1963-01-02	1963-12-06
1964	1964-02-25	1964-12-09
1965	1965-01-19	1965-12-02
1966	1966-01-30	1966-12-20

Every Fixed Threshold

Fixed thresholds at Fernbank
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
10 mm (0.39 in): Days with 10 mm or more rain	57	36	1952	27
25 mm (0.98 in): Days with 25 mm or more rain	57	12	1935	3
50 mm (1.97 in): Days with 50 mm or more rain	43	4	1950	1
100 mm (3.94 in): Days with 100 mm or more rain	8	1	1919	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1909.

Download the Data

Data for Fernbank 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).

Fernbank Threshold Days by Year (ASN00085027)

Key Facts for Fernbank Thresholds

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

Every Fixed Threshold

Download the Data

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