Waukegan Threshold Days by Year (USC00119029)

17 fixed thresholds counted per year at Waukegan (USC00119029): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Waukegan Thresholds

Waukegan: days with 10 mm (0.39 in) or more of precipitation in 72 years, most in 1941 with 42.
Waukegan: days with 25 mm (0.98 in) or more of precipitation in 72 years, most in 1972 with 15.
Waukegan: days with a maximum temperature at or above 30 C (86 F) in 49 years, most in 1983 with 54.
Waukegan: days with a maximum temperature at or below 0 C (32 F) in 49 years, most in 1978 with 82.
17 fixed thresholds have at least one qualifying day at Waukegan.

Days at or above 30 C (86 F)

49 years with a qualifying day

Days per year at Waukegan with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 54 in 1983.

Days at or above 30 C (86 F) per year at Waukegan
Year	Days	Decade average
1949	35	35
1950	17	28.2
1951	9	28.2
1952	39	28.2
1953	41	28.2
1954	32	28.2
1955	49	28.2
1956	22	28.2
1957	17	28.2
1958	21	28.2
1959	35	28.2
1960	15	25
1961	36	25
1962	22	25
1963	26	25
1964	38	25
1965	20	25
1966	34	25
1967	14	25
1968	28	25
1969	17	25
1970	36	24.6
1971	30	24.6
1972	20	24.6
1973	27	24.6
1974	15	24.6
1975	28	24.6
1976	27	24.6
1977	27	24.6
1978	20	24.6
1979	16	24.6
1980	27	28.6
1981	7	28.6
1982	12	28.6
1983	54	28.6
1984	17	28.6
1987	38	28.6
1988	45	28.6
1990	20	23.4
1991	43	23.4
1992	7	23.4
1993	10	23.4
1994	30	23.4
1995	27	23.4
1996	16	23.4
1997	24	23.4
1998	28	23.4
1999	29	23.4
2000	20	20

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

First to last qualifying date each year at Waukegan
Year	First date	Last date
1949	1949-05-03	1949-08-27
1950	1950-05-24	1950-10-18
1951	1951-07-09	1951-10-04
1952	1952-05-04	1952-09-28
1953	1953-05-29	1953-10-20
1954	1954-05-31	1954-10-03
1955	1955-05-03	1955-09-19
1956	1956-05-11	1956-09-13
1957	1957-06-16	1957-09-01
1958	1958-05-17	1958-09-24
1959	1959-05-02	1959-09-22
1960	1960-04-23	1960-09-08
1961	1961-05-13	1961-09-11
1962	1962-04-26	1962-09-13
1963	1963-05-08	1963-10-06
1964	1964-05-18	1964-09-10
1965	1965-06-22	1965-09-18
1966	1966-06-04	1966-09-02
1967	1967-05-27	1967-10-04
1968	1968-06-06	1968-09-03
1969	1969-05-27	1969-08-14
1970	1970-05-22	1970-09-22
1971	1971-05-18	1971-10-03
1972	1972-06-03	1972-08-30
1973	1973-06-09	1973-09-04
1974	1974-07-02	1974-08-27
1975	1975-05-19	1975-10-14
1976	1976-06-08	1976-09-09
1977	1977-05-14	1977-09-05
1978	1978-05-28	1978-09-20
1979	1979-05-09	1979-09-01
1980	1980-04-23	1980-08-30
1981	1981-06-16	1981-08-05
1982	1982-06-08	1982-09-12
1983	1983-06-11	1983-10-02
1984	1984-06-06	1984-09-07
1987	1987-05-10	1987-09-06
1988	1988-05-28	1988-09-17
1990	1990-04-24	1990-09-06
1991	1991-05-13	1991-09-15
1992	1992-05-02	1992-08-26
1993	1993-06-18	1993-08-31
1994	1994-04-27	1994-09-16
1995	1995-06-07	1995-09-06
1996	1996-05-18	1996-08-23
1997	1997-06-21	1997-10-07
1998	1998-05-19	1998-09-28
1999	1999-06-06	1999-09-06
2000	2000-05-07	2000-09-19

Every Fixed Threshold

Fixed thresholds at Waukegan
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	49	54	1983	20
35 C (95 F): Days	28	19	1988	2
90 F (32.2 C): Days	48	41	1988	3
100 F (37.8 C): Days	7	5	1988	1
0 C (32 F): Ice days (max	49	82	1978	55
0 C (32 F): Frost days (min	39	162	1980	117
-10 C (14 F): Days with min	39	70	1978	41
-20 C (-4 F): Days with min	37	25	1963	1
-30 C (-22 F): Days with min	2	1	1951	1
20 C (68 F): Tropical nights (min	39	32	1999	19
25 C (77 F): Days with min	5	4	1999	4
10 mm (0.39 in): Days with 10 mm or more rain	72	42	1941	32
25 mm (0.98 in): Days with 25 mm or more rain	72	15	1972	6
50 mm (1.97 in): Days with 50 mm or more rain	47	4	1938	3
100 mm (3.94 in): Days with 100 mm or more rain	1	1	1972	1
10 cm (3.9 in): Days with 10 cm or more snowfall	47	7	1965	4
25 cm (9.8 in): Days with 25 cm or more snowfall	8	2	1970	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1949.

Download the Data

Data for Waukegan 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).

Waukegan Threshold Days by Year (USC00119029)

Key Facts for Waukegan Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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