Kegg Threshold Days by Year

16 fixed thresholds counted per year at Kegg (USC00364481): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Kegg Thresholds

Kegg: days with 10 mm (0.39 in) or more of precipitation in 27 years, most in 1983 with 43.
Kegg: days with 25 mm (0.98 in) or more of precipitation in 27 years, most in 1955 with 10.
Kegg: nights with a minimum temperature at or below 0 C (32 F) in 24 years, most in 1986 with 159.
Kegg: nights with a minimum temperature at or below -10 C (14 F) in 24 years, most in 1978 with 46.
16 fixed thresholds have at least one qualifying day at Kegg.

Days at or above 30 C (86 F)

21 years with a qualifying day

Days per year at Kegg with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 71 in 1983.

Days at or above 30 C (86 F) per year at Kegg
Year	Days	Decade average
1952	45	44
1953	52	44
1955	46	44
1956	26	44
1957	52	44
1958	28	44
1959	59	44
1960	31	39
1961	45	39
1962	29	39
1963	30	39
1964	52	39
1965	47	39
1974	33	45
1978	57	45
1980	64	51.6
1981	33	51.6
1983	71	51.6
1985	33	51.6
1986	57	51.6
1990	48	48

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

First to last qualifying date each year at Kegg
Year	First date	Last date
1952	1952-04-22	1952-09-14
1953	1953-05-11	1953-10-18
1955	1955-05-04	1955-09-16
1956	1956-04-28	1956-09-13
1957	1957-04-27	1957-09-22
1958	1958-06-01	1958-09-25
1959	1959-05-07	1959-10-06
1960	1960-04-23	1960-09-09
1961	1961-06-01	1961-09-25
1962	1962-04-26	1962-09-13
1963	1963-04-19	1963-10-07
1964	1964-05-19	1964-09-18
1965	1965-05-03	1965-09-22
1974	1974-04-28	1974-09-13
1978	1978-05-20	1978-09-21
1980	1980-05-24	1980-09-21
1981	1981-05-23	1981-08-30
1983	1983-04-28	1983-09-22
1985	1985-04-18	1985-09-08
1986	1986-05-06	1986-09-30
1990	1990-04-25	1990-09-06

Every Fixed Threshold

Fixed thresholds at Kegg
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	21	71	1983	48
35 C (95 F): Days	15	10	1983	1
90 F (32.2 C): Days	21	40	1983	18
100 F (37.8 C): Days	1	2	1983	2
0 C (32 F): Ice days (max	21	45	1960	4
0 C (32 F): Frost days (min	24	159	1986	112
-10 C (14 F): Days with min	24	46	1978	13
-20 C (-4 F): Days with min	15	6	1961	4
20 C (68 F): Tropical nights (min	21	15	1983	5
25 C (77 F): Days with min	1	0	n/a	1
10 mm (0.39 in): Days with 10 mm or more rain	27	43	1983	35
25 mm (0.98 in): Days with 25 mm or more rain	27	10	1955	8
50 mm (1.97 in): Days with 50 mm or more rain	15	3	1960	1
100 mm (3.94 in): Days with 100 mm or more rain	1	0	n/a	1
10 cm (3.9 in): Days with 10 cm or more snowfall	11	5	1962	2
25 cm (9.8 in): Days with 25 cm or more snowfall	2	1	1962	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1952.

Download the Data

Data for Kegg 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).

Kegg Threshold Days by Year

Key Facts for Kegg Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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