Shonkin 7 S Threshold Days by Year (USC00247540)

19 fixed thresholds counted per year at Shonkin 7 S (USC00247540): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Shonkin 7 S Thresholds

Shonkin 7 S: days with 10 cm (3.9 in) or more of snowfall in 55 years, most in 1967 with 25.
Shonkin 7 S: days with 10 mm (0.39 in) or more of precipitation in 51 years, most in 1975 with 35.
Shonkin 7 S: days with 25 mm (0.98 in) or more of precipitation in 51 years, most in 1975 with 14.
Shonkin 7 S: days with 25 cm (9.8 in) or more of snowfall in 51 years, most in 2010 with 8.
19 fixed thresholds have at least one qualifying day at Shonkin 7 S.

Days at or above 30 C (86 F)

39 years with a qualifying day

Days per year at Shonkin 7 S with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 39 in 2003.

Days at or above 30 C (86 F) per year at Shonkin 7 S
Year	Days	Decade average
1954	15	18.5
1955	23	18.5
1956	21	18.5
1957	22	18.5
1958	14	18.5
1959	16	18.5
1960	27	21
1961	38	21
1962	5	21
1963	26	21
1964	12	21
1965	10	21
1966	22	21
1967	34	21
1968	10	21
1969	26	21
1970	26	18.3
1971	32	18.3
1972	14	18.3
1973	27	18.3
1974	13	18.3
1975	14	18.3
1976	14	18.3
1977	11	18.3
1978	13	18.3
1979	19	18.3
1980	8	9.5
1982	11	9.5
2002	11	22.5
2003	39	22.5
2004	9	22.5
2007	31	22.5
2010	8	17.7
2011	22	17.7
2013	19	17.7
2014	16	17.7
2017	30	17.7
2018	18	17.7
2019	11	17.7

For each year, a bar from the first to the last day at Shonkin 7 S meeting 30 C (86 F).

First to last qualifying date each year at Shonkin 7 S
Year	First date	Last date
1954	1954-06-22	1954-08-30
1955	1955-07-14	1955-09-06
1956	1956-06-04	1956-08-23
1957	1957-07-10	1957-09-27
1958	1958-06-27	1958-09-11
1959	1959-06-14	1959-09-13
1960	1960-05-12	1960-09-03
1961	1961-06-16	1961-08-29
1962	1962-06-25	1962-08-17
1963	1963-07-04	1963-09-30
1964	1964-07-09	1964-08-18
1965	1965-07-26	1965-08-12
1966	1966-06-28	1966-09-23
1967	1967-07-06	1967-09-29
1968	1968-07-06	1968-09-11
1969	1969-06-04	1969-09-02
1970	1970-06-04	1970-08-31
1971	1971-07-15	1971-09-06
1972	1972-05-31	1972-08-29
1973	1973-06-22	1973-09-06
1974	1974-06-19	1974-08-05
1975	1975-07-04	1975-08-06
1976	1976-06-30	1976-09-05
1977	1977-06-01	1977-08-24
1978	1978-06-30	1978-09-03
1979	1979-06-11	1979-09-16
1980	1980-05-21	1980-09-06
1982	1982-07-21	1982-09-09
2002	2002-06-27	2002-09-16
2003	2003-06-30	2003-09-06
2004	2004-07-14	2004-09-01
2007	2007-07-02	2007-09-03
2010	2010-06-29	2010-08-26
2011	2011-07-03	2011-09-30
2013	2013-07-02	2013-09-16
2014	2014-07-09	2014-09-24
2017	2017-06-26	2017-09-11
2018	2018-07-06	2018-08-17
2019	2019-07-23	2019-09-04

Every Fixed Threshold

Fixed thresholds at Shonkin 7 S
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	39	39	2003	11
35 C (95 F): Days	21	5	1961	2
40 C (104 F): Days	1	1	1961	1
90 F (32.2 C): Days	36	22	2003	2
100 F (37.8 C): Days	2	2	1961	1
0 C (32 F): Ice days (max	39	68	2019	68
0 C (32 F): Frost days (min	39	199	1970	170
-10 C (14 F): Days with min	39	86	1955	63
-20 C (-4 F): Days with min	38	32	1972	25
-30 C (-22 F): Days with min	25	9	1954	2
-40 C (-40 F): Days with min	1	1	1968	1
20 C (68 F): Tropical nights (min	10	5	2011	1
10 mm (0.39 in): Days with 10 mm or more rain	51	35	1975	18
25 mm (0.98 in): Days with 25 mm or more rain	51	14	1975	5
50 mm (1.97 in): Days with 50 mm or more rain	38	4	1964	1
100 mm (3.94 in): Days with 100 mm or more rain	7	2	1964	2
10 cm (3.9 in): Days with 10 cm or more snowfall	55	25	1967	14
25 cm (9.8 in): Days with 25 cm or more snowfall	51	8	2010	2
50 cm (19.7 in): Days with 50 cm or more snowfall	19	2	1982	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1954.

Download the Data

Data for Shonkin 7 S 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).

Shonkin 7 S Threshold Days by Year (USC00247540)

Key Facts for Shonkin 7 S Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

Related