Johnsonville Threshold Days by Year (USC00404673)

19 fixed thresholds counted per year at Johnsonville (USC00404673): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Johnsonville Thresholds

Johnsonville: days with 10 mm (0.39 in) or more of precipitation in 54 years, most in 1950 with 64.
Johnsonville: days with 25 mm (0.98 in) or more of precipitation in 54 years, most in 1950 with 31.
Johnsonville: days with 50 mm (1.97 in) or more of precipitation in 48 years, most in 1919 with 8.
Johnsonville: nights with a minimum temperature at or below 0 C (32 F) in 44 years, most in 1912 with 102.
19 fixed thresholds have at least one qualifying day at Johnsonville.

Days at or above 30 C (86 F)

43 years with a qualifying day

Days per year at Johnsonville with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 132 in 1921.

Days at or above 30 C (86 F) per year at Johnsonville
Year	Days	Decade average
1896	116	117.7
1898	125	117.7
1899	112	117.7
1900	106	100.8
1902	108	100.8
1903	88	100.8
1904	98	100.8
1906	105	100.8
1907	102	100.8
1908	107	100.8
1909	92	100.8
1910	89	106.2
1911	121	106.2
1912	94	106.2
1913	115	106.2
1914	127	106.2
1915	101	106.2
1916	108	106.2
1917	95	106.2
1918	106	106.2
1919	106	106.2
1920	93	101.8
1921	132	101.8
1922	122	101.8
1923	74	101.8
1925	131	101.8
1926	101	101.8
1927	94	101.8
1928	84	101.8
1929	85	101.8
1930	106	101.6
1931	119	101.6
1932	88	101.6
1933	98	101.6
1934	107	101.6
1935	92	101.6
1936	119	101.6
1937	86	101.6
1938	94	101.6
1939	107	101.6
1940	87	93.3
1941	95	93.3
1942	98	93.3

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

First to last qualifying date each year at Johnsonville
Year	First date	Last date
1896	1896-04-11	1896-09-18
1898	1898-03-22	1898-10-10
1899	1899-04-13	1899-10-14
1900	1900-04-07	1900-10-05
1902	1902-04-25	1902-10-25
1903	1903-05-21	1903-10-04
1904	1904-05-21	1904-10-10
1906	1906-04-12	1906-09-22
1907	1907-03-21	1907-10-03
1908	1908-03-18	1908-10-20
1909	1909-04-18	1909-10-08
1910	1910-03-23	1910-10-19
1911	1911-03-11	1911-10-06
1912	1912-05-02	1912-10-11
1913	1913-04-18	1913-10-10
1914	1914-04-17	1914-11-07
1915	1915-04-18	1915-10-18
1916	1916-05-06	1916-10-15
1917	1917-04-17	1917-10-17
1918	1918-04-02	1918-10-06
1919	1919-04-22	1919-10-26
1920	1920-04-18	1920-10-22
1921	1921-03-18	1921-10-26
1922	1922-04-06	1922-10-31
1923	1923-04-22	1923-09-29
1925	1925-04-15	1925-10-04
1926	1926-05-01	1926-10-04
1927	1927-04-17	1927-10-23
1928	1928-05-02	1928-10-15
1929	1929-03-23	1929-09-29
1930	1930-04-10	1930-09-25
1931	1931-04-16	1931-10-13
1932	1932-04-05	1932-09-18
1933	1933-05-19	1933-09-26
1934	1934-04-04	1934-09-26
1935	1935-04-24	1935-10-16
1936	1936-05-01	1936-09-28
1937	1937-04-17	1937-10-30
1938	1938-04-26	1938-10-18
1939	1939-04-24	1939-10-24
1940	1940-04-01	1940-10-28
1941	1941-04-12	1941-10-20
1942	1942-04-17	1942-10-20

Every Fixed Threshold

Fixed thresholds at Johnsonville
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	43	132	1921	98
35 C (95 F): Days	42	57	1914	17
40 C (104 F): Days	8	11	1930	3
90 F (32.2 C): Days	43	98	1921	57
100 F (37.8 C): Days	27	27	1930	1
110 F (43.3 C): Days	1	1	1930	1
0 C (32 F): Ice days (max	39	15	1899	9
0 C (32 F): Frost days (min	44	102	1912	92
-10 C (14 F): Days with min	43	22	1917	10
-20 C (-4 F): Days with min	9	5	1899	3
-30 C (-22 F): Days with min	1	1	1899	1
20 C (68 F): Tropical nights (min	44	73	1934	51
25 C (77 F): Days with min	16	4	1904	1
10 mm (0.39 in): Days with 10 mm or more rain	54	64	1950	64
25 mm (0.98 in): Days with 25 mm or more rain	54	31	1950	31
50 mm (1.97 in): Days with 50 mm or more rain	48	8	1919	4
100 mm (3.94 in): Days with 100 mm or more rain	14	2	1900	1
10 cm (3.9 in): Days with 10 cm or more snowfall	15	2	1910	1
25 cm (9.8 in): Days with 25 cm or more snowfall	2	1	1902	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1896.

Download the Data

Data for Johnsonville 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).

Johnsonville Threshold Days by Year (USC00404673)

Key Facts for Johnsonville Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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