Johnson City Threshold Days by Year

16 fixed thresholds counted per year at Johnson City (USC00404657): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Johnson City Thresholds

Johnson City: days with 10 mm (0.39 in) or more of precipitation in 17 years, most in 1924 with 51.
Johnson City: days with 25 mm (0.98 in) or more of precipitation in 17 years, most in 1929 with 16.
Johnson City: days with a maximum temperature at or above 30 C (86 F) in 16 years, most in 1914 with 110.
Johnson City: days with a maximum temperature at or above 90 F (32.2 C) in 16 years, most in 1911 with 71.
16 fixed thresholds have at least one qualifying day at Johnson City.

Days at or above 30 C (86 F)

16 years with a qualifying day

Days per year at Johnson City with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 110 in 1914.

Days at or above 30 C (86 F) per year at Johnson City
Year	Days	Decade average
1911	109	82.6
1912	68	82.6
1913	95	82.6
1914	110	82.6
1915	67	82.6
1916	88	82.6
1917	51	82.6
1919	73	82.6
1920	38	55
1921	61	55
1924	46	55
1926	105	55
1927	47	55
1928	48	55
1929	40	55
1930	72	72

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

First to last qualifying date each year at Johnson City
Year	First date	Last date
1911	1911-05-11	1911-10-07
1912	1912-05-11	1912-09-18
1913	1913-04-26	1913-10-11
1914	1914-04-25	1914-10-10
1915	1915-04-23	1915-10-17
1916	1916-03-26	1916-10-10
1917	1917-04-19	1917-10-26
1919	1919-05-05	1919-10-17
1920	1920-04-22	1920-09-27
1921	1921-05-24	1921-09-28
1924	1924-06-07	1924-09-13
1926	1926-05-02	1926-10-04
1927	1927-04-18	1927-10-06
1928	1928-06-01	1928-09-16
1929	1929-03-25	1929-09-28
1930	1930-05-04	1930-09-26

Every Fixed Threshold

Fixed thresholds at Johnson City
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	16	110	1914	72
35 C (95 F): Days	12	28	1911	13
40 C (104 F): Days	2	1	1914	1
90 F (32.2 C): Days	16	71	1911	40
100 F (37.8 C): Days	4	4	1911	3
0 C (32 F): Ice days (max	15	21	1917	5
0 C (32 F): Frost days (min	15	115	1915	106
-10 C (14 F): Days with min	13	26	1917	13
-20 C (-4 F): Days with min	1	2	1917	2
-30 C (-22 F): Days with min	1	1	1917	1
20 C (68 F): Tropical nights (min	14	42	1928	10
25 C (77 F): Days with min	1	1	1914	1
10 mm (0.39 in): Days with 10 mm or more rain	17	51	1924	41
25 mm (0.98 in): Days with 25 mm or more rain	17	16	1929	12
50 mm (1.97 in): Days with 50 mm or more rain	9	3	1919	1
10 cm (3.9 in): Days with 10 cm or more snowfall	2	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 1911.

Download the Data

Data for Johnson City 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 2026-10-16 (16 October 2026). Threshold counts are computed by this site.

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

Johnson City Threshold Days by Year

Key Facts for Johnson City Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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