Knox City Threshold Days by Year (USC00414852)

18 fixed thresholds counted per year at Knox City (USC00414852): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Knox City Thresholds

Knox City: days with 10 mm (0.39 in) or more of precipitation in 29 years, most in 1941 with 33.
Knox City: days with 25 mm (0.98 in) or more of precipitation in 29 years, most in 1941 with 13.
Knox City: days with a maximum temperature at or above 30 C (86 F) in 23 years, most in 1956 with 186.
Knox City: days with a maximum temperature at or above 35 C (95 F) in 23 years, most in 1956 with 128.
18 fixed thresholds have at least one qualifying day at Knox City.

Days at or above 30 C (86 F)

23 years with a qualifying day

Days per year at Knox City with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 186 in 1956.

Days at or above 30 C (86 F) per year at Knox City
Year	Days	Decade average
1942	128	142.9
1943	157	142.9
1944	137	142.9
1945	150	142.9
1946	129	142.9
1947	153	142.9
1948	159	142.9
1949	130	142.9
1950	142	154.8
1951	155	154.8
1952	158	154.8
1953	151	154.8
1954	172	154.8
1955	173	154.8
1956	186	154.8
1957	125	154.8
1958	136	154.8
1959	150	154.8
1960	160	156
1961	146	156
1962	158	156
1963	175	156
1964	141	156

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

First to last qualifying date each year at Knox City
Year	First date	Last date
1942	1942-03-15	1942-11-16
1943	1943-01-23	1943-11-05
1944	1944-04-04	1944-11-01
1945	1945-02-14	1945-11-06
1946	1946-02-25	1946-09-22
1947	1947-03-23	1947-10-30
1948	1948-03-20	1948-10-15
1949	1949-03-23	1949-10-20
1950	1950-03-18	1950-11-19
1951	1951-02-12	1951-12-30
1952	1952-01-25	1952-11-01
1953	1953-03-20	1953-10-16
1954	1954-02-14	1954-12-04
1955	1955-02-28	1955-12-24
1956	1956-02-23	1956-10-14
1957	1957-04-16	1957-10-07
1958	1958-04-21	1958-12-04
1959	1959-03-23	1959-10-25
1960	1960-03-31	1960-10-13
1961	1961-03-03	1961-10-29
1962	1962-02-11	1962-11-10
1963	1963-03-24	1963-11-07
1964	1964-03-13	1964-10-18

Every Fixed Threshold

Fixed thresholds at Knox City
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	23	186	1956	141
35 C (95 F): Days	23	128	1956	93
40 C (104 F): Days	21	36	1952	17
45 C (113 F): Days	2	1	1943	1
90 F (32.2 C): Days	23	159	1956	126
100 F (37.8 C): Days	23	78	1956	48
110 F (43.3 C): Days	11	4	1952	1
0 C (32 F): Ice days (max	20	9	1949	1
0 C (32 F): Frost days (min	23	74	1947	65
-10 C (14 F): Days with min	19	13	1963	5
-20 C (-4 F): Days with min	1	2	1947	2
20 C (68 F): Tropical nights (min	23	108	1954	90
25 C (77 F): Days with min	22	24	1952	9
10 mm (0.39 in): Days with 10 mm or more rain	29	33	1941	24
25 mm (0.98 in): Days with 25 mm or more rain	29	13	1941	7
50 mm (1.97 in): Days with 50 mm or more rain	21	4	1962	2
100 mm (3.94 in): Days with 100 mm or more rain	4	1	1936	1
10 cm (3.9 in): Days with 10 cm or more snowfall	13	2	1938	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1942.

Download the Data

Data for Knox 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 2026-10-17 (17 October 2026). Threshold counts are computed by this site.

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

Knox City Threshold Days by Year (USC00414852)

Key Facts for Knox City Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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