Port Wing Threshold Days by Year (USC00476772)

17 fixed thresholds counted per year at Port Wing (USC00476772): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Port Wing Thresholds

Port Wing: days with a maximum temperature at or above 30 C (86 F) in 34 years, most in 1970 with 48.
Port Wing: days with a maximum temperature at or below 0 C (32 F) in 34 years, most in 1955 with 113.
Port Wing: nights with a minimum temperature at or below 0 C (32 F) in 33 years, most in 1966 with 195.
Port Wing: nights with a minimum temperature at or below -10 C (14 F) in 33 years, most in 1972 with 99.
17 fixed thresholds have at least one qualifying day at Port Wing.

Days at or above 30 C (86 F)

34 years with a qualifying day

Days per year at Port Wing with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 48 in 1970.

Days at or above 30 C (86 F) per year at Port Wing
Year	Days	Decade average
1948	20	18.5
1949	17	18.5
1952	12	10.8
1953	15	10.8
1954	6	10.8
1955	19	10.8
1956	6	10.8
1957	7	10.8
1962	6	14.1
1963	15	14.1
1964	13	14.1
1965	10	14.1
1966	25	14.1
1967	5	14.1
1968	10	14.1
1969	29	14.1
1970	48	20.3
1972	9	20.3
1973	11	20.3
1977	13	20.3
1980	15	12.8
1981	10	12.8
1982	1	12.8
1983	28	12.8
1984	10	12.8
1994	1	6.3
1997	4	6.3
1999	14	6.3
2000	4	11.2
2001	18	11.2
2002	13	11.2
2003	12	11.2
2004	5	11.2
2005	15	11.2

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

First to last qualifying date each year at Port Wing
Year	First date	Last date
1948	1948-06-02	1948-09-17
1949	1949-06-10	1949-08-26
1952	1952-04-27	1952-09-13
1953	1953-05-07	1953-10-02
1954	1954-06-24	1954-08-24
1955	1955-06-30	1955-08-20
1956	1956-06-09	1956-08-07
1957	1957-07-02	1957-08-08
1962	1962-05-17	1962-08-28
1963	1963-06-25	1963-08-08
1964	1964-05-21	1964-07-31
1965	1965-05-25	1965-08-14
1966	1966-05-26	1966-08-26
1967	1967-06-03	1967-08-25
1968	1968-07-06	1968-08-07
1969	1969-05-28	1969-08-30
1970	1970-05-18	1970-09-08
1972	1972-06-07	1972-08-31
1973	1973-07-06	1973-08-29
1977	1977-05-12	1977-07-23
1980	1980-05-04	1980-09-08
1981	1981-05-21	1981-08-23
1982	1982-07-05	1982-07-05
1983	1983-06-11	1983-09-03
1984	1984-07-12	1984-09-19
1994	1994-06-15	1994-06-15
1997	1997-06-25	1997-07-18
1999	1999-05-30	1999-09-05
2000	2000-07-02	2000-09-19
2001	2001-06-26	2001-09-07
2002	2002-06-26	2002-09-09
2003	2003-07-03	2003-09-12
2004	2004-07-01	2004-09-04
2005	2005-06-20	2005-09-12

Every Fixed Threshold

Fixed thresholds at Port Wing
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	34	48	1970	15
35 C (95 F): Days	10	4	2005	4
90 F (32.2 C): Days	31	16	1948	7
0 C (32 F): Ice days (max	34	113	1955	84
0 C (32 F): Frost days (min	33	195	1966	156
-10 C (14 F): Days with min	33	99	1972	67
-20 C (-4 F): Days with min	33	44	1972	8
-30 C (-22 F): Days with min	20	9	1972	3
-40 C (-40 F): Days with min	2	1	1967	1
20 C (68 F): Tropical nights (min	26	16	1997	2
25 C (77 F): Days with min	1	1	2001	1
10 mm (0.39 in): Days with 10 mm or more rain	30	36	1982	20
25 mm (0.98 in): Days with 25 mm or more rain	30	10	1977	3
50 mm (1.97 in): Days with 50 mm or more rain	16	2	1949	2
100 mm (3.94 in): Days with 100 mm or more rain	2	1	1955	1
10 cm (3.9 in): Days with 10 cm or more snowfall	24	9	1983	5
25 cm (9.8 in): Days with 25 cm or more snowfall	8	2	2001	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1948.

Download the Data

Data for Port Wing 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).

Port Wing Threshold Days by Year (USC00476772)

Key Facts for Port Wing Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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