Iliad Threshold Days by Year (USC00244368)

17 fixed thresholds counted per year at Iliad (USC00244368): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Iliad Thresholds

Iliad: nights with a minimum temperature at or below 0 C (32 F) in 31 years, most in 1960 with 202.
Iliad: nights with a minimum temperature at or below -10 C (14 F) in 31 years, most in 1996 with 95.
Iliad: nights with a minimum temperature at or below -20 C (-4 F) in 31 years, most in 1996 with 52.
Iliad: days with a maximum temperature at or above 30 C (86 F) in 29 years, most in 1961 with 77.
17 fixed thresholds have at least one qualifying day at Iliad.

Days at or above 30 C (86 F)

29 years with a qualifying day

Days per year at Iliad with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 77 in 1961.

Days at or above 30 C (86 F) per year at Iliad
Year	Days	Decade average
1960	55	54.9
1961	77	54.9
1962	41	54.9
1963	62	54.9
1964	52	54.9
1965	38	54.9
1966	72	54.9
1967	63	54.9
1968	34	54.9
1980	31	38.9
1981	36	38.9
1982	29	38.9
1983	41	38.9
1984	54	38.9
1985	31	38.9
1986	33	38.9
1987	46	38.9
1988	62	38.9
1989	26	38.9
1990	41	37.6
1991	45	37.6
1992	46	37.6
1993	9	37.6
1994	45	37.6
1995	25	37.6
1996	40	37.6
1997	42	37.6
1998	47	37.6
1999	36	37.6

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

First to last qualifying date each year at Iliad
Year	First date	Last date
1960	1960-05-12	1960-10-06
1961	1961-05-21	1961-10-15
1962	1962-04-19	1962-09-27
1963	1963-05-30	1963-10-03
1964	1964-05-19	1964-10-13
1965	1965-06-10	1965-09-01
1966	1966-05-03	1966-09-23
1967	1967-05-21	1967-09-29
1968	1968-04-30	1968-09-11
1980	1980-04-20	1980-10-08
1981	1981-06-26	1981-09-18
1982	1982-06-13	1982-09-09
1983	1983-05-25	1983-09-26
1984	1984-05-14	1984-09-18
1985	1985-05-22	1985-08-30
1986	1986-05-20	1986-08-29
1987	1987-04-27	1987-10-03
1988	1988-05-16	1988-09-06
1989	1989-06-19	1989-09-29
1990	1990-06-24	1990-09-24
1991	1991-06-11	1991-09-20
1992	1992-04-29	1992-10-01
1993	1993-05-13	1993-08-20
1994	1994-06-20	1994-09-25
1995	1995-05-30	1995-09-12
1996	1996-06-08	1996-09-14
1997	1997-05-16	1997-10-01
1998	1998-05-04	1998-09-18
1999	1999-05-26	1999-09-24

Every Fixed Threshold

Fixed thresholds at Iliad
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	29	77	1961	36
35 C (95 F): Days	28	28	1961	7
40 C (104 F): Days	4	4	1960	1
90 F (32.2 C): Days	29	55	1961	25
100 F (37.8 C): Days	18	9	1960	1
110 F (43.3 C): Days	1	1	1961	1
0 C (32 F): Ice days (max	29	76	1996	16
0 C (32 F): Frost days (min	31	202	1960	149
-10 C (14 F): Days with min	31	95	1996	26
-20 C (-4 F): Days with min	31	52	1996	2
-30 C (-22 F): Days with min	24	15	1982	4
-40 C (-40 F): Days with min	4	3	1983	1
20 C (68 F): Tropical nights (min	7	2	1963	1
10 mm (0.39 in): Days with 10 mm or more rain	26	15	1993	6
25 mm (0.98 in): Days with 25 mm or more rain	16	4	1968	1
50 mm (1.97 in): Days with 50 mm or more rain	7	2	1993	1
10 cm (3.9 in): Days with 10 cm or more snowfall	8	2	1991	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1960.

Download the Data

Data for Iliad 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).

Iliad Threshold Days by Year (USC00244368)

Key Facts for Iliad Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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