Jefferson City Evap Threshold Days by Year (USC00404609)

15 fixed thresholds counted per year at Jefferson City Evap (USC00404609): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Jefferson City Evap Thresholds

Jefferson City Evap: days with 10 mm (0.39 in) or more of precipitation in 47 years, most in 1972 with 59.
Jefferson City Evap: days with 25 mm (0.98 in) or more of precipitation in 47 years, most in 1912 with 16.
Jefferson City Evap: days with 50 mm (1.97 in) or more of precipitation in 37 years, most in 1973 with 5.
Jefferson City Evap: days with a maximum temperature at or above 30 C (86 F) in 26 years, most in 1954 with 105.
15 fixed thresholds have at least one qualifying day at Jefferson City Evap.

Days at or above 30 C (86 F)

26 years with a qualifying day

Days per year at Jefferson City Evap with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 105 in 1954.

Days at or above 30 C (86 F) per year at Jefferson City Evap
Year	Days	Decade average
1953	101	92.1
1954	105	92.1
1955	96	92.1
1956	84	92.1
1957	85	92.1
1958	73	92.1
1959	101	92.1
1960	80	60.4
1961	57	60.4
1962	79	60.4
1963	47	60.4
1964	69	60.4
1965	64	60.4
1966	57	60.4
1967	25	60.4
1968	54	60.4
1969	72	60.4
1970	77	62.7
1971	48	62.7
1972	46	62.7
1973	59	62.7
1974	41	62.7
1975	79	62.7
1976	53	62.7
1977	81	62.7
1978	80	62.7

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

First to last qualifying date each year at Jefferson City Evap
Year	First date	Last date
1953	1953-04-25	1953-10-05
1954	1954-05-30	1954-10-14
1955	1955-04-18	1955-09-24
1956	1956-04-28	1956-09-18
1957	1957-04-29	1957-09-23
1958	1958-05-18	1958-09-27
1959	1959-05-03	1959-10-06
1960	1960-04-24	1960-09-22
1961	1961-06-03	1961-09-26
1962	1962-05-01	1962-09-16
1963	1963-04-22	1963-09-22
1964	1964-05-20	1964-09-12
1965	1965-04-24	1965-09-23
1966	1966-06-08	1966-09-05
1967	1967-05-27	1967-09-21
1968	1968-05-25	1968-09-04
1969	1969-05-06	1969-09-19
1970	1970-04-20	1970-09-27
1971	1971-06-04	1971-09-20
1972	1972-06-06	1972-09-26
1973	1973-06-03	1973-09-26
1974	1974-05-18	1974-09-13
1975	1975-05-22	1975-09-11
1976	1976-04-20	1976-09-14
1977	1977-04-12	1977-09-07
1978	1978-04-10	1978-09-22

Every Fixed Threshold

Fixed thresholds at Jefferson City Evap
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	26	105	1954	80
35 C (95 F): Days	16	26	1954	3
90 F (32.2 C): Days	26	73	1954	26
100 F (37.8 C): Days	2	6	1954	6
0 C (32 F): Ice days (max	25	28	1978	28
0 C (32 F): Frost days (min	26	120	1960	72
-10 C (14 F): Days with min	25	31	1977	23
-20 C (-4 F): Days with min	7	3	1962	2
20 C (68 F): Tropical nights (min	26	35	1977	33
10 mm (0.39 in): Days with 10 mm or more rain	47	59	1972	34
25 mm (0.98 in): Days with 25 mm or more rain	47	16	1912	8
50 mm (1.97 in): Days with 50 mm or more rain	37	5	1973	1
100 mm (3.94 in): Days with 100 mm or more rain	1	1	1919	1
10 cm (3.9 in): Days with 10 cm or more snowfall	9	2	1952	1
25 cm (9.8 in): Days with 25 cm or more snowfall	3	1	1952	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1953.

Download the Data

Data for Jefferson City Evap 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).

Jefferson City Evap Threshold Days by Year (USC00404609)

Key Facts for Jefferson City Evap Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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