Portage Southport A Threshold Days by Year (CA005012320)

18 fixed thresholds counted per year at Portage Southport A (CA005012320): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Portage Southport A Thresholds

Portage Southport A: days with a maximum temperature at or above 30 C (86 F) in 34 years, most in 1983 with 36.
Portage Southport A: days with a maximum temperature at or above 90 F (32.2 C) in 34 years, most in 1961 with 22.
Portage Southport A: days with a maximum temperature at or below 0 C (32 F) in 34 years, most in 1955 with 139.
Portage Southport A: nights with a minimum temperature at or below 0 C (32 F) in 34 years, most in 1959 with 209.
18 fixed thresholds have at least one qualifying day at Portage Southport A.

Days at or above 30 C (86 F)

34 years with a qualifying day

Days per year at Portage Southport A with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 36 in 1983.

Days at or above 30 C (86 F) per year at Portage Southport A
Year	Days	Decade average
1942	7	9
1943	12	9
1944	8	9
1953	17	13.4
1954	6	13.4
1955	28	13.4
1956	7	13.4
1957	13	13.4
1958	9	13.4
1959	14	13.4
1960	16	14.9
1961	33	14.9
1962	5	14.9
1963	18	14.9
1964	11	14.9
1965	8	14.9
1966	19	14.9
1967	20	14.9
1968	5	14.9
1969	14	14.9
1970	26	15.2
1971	10	15.2
1972	14	15.2
1973	12	15.2
1974	17	15.2
1975	16	15.2
1976	22	15.2
1977	12	15.2
1978	11	15.2
1979	12	15.2
1980	29	21.8
1981	14	21.8
1982	8	21.8
1983	36	21.8

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

First to last qualifying date each year at Portage Southport A
Year	First date	Last date
1942	1942-07-11	1942-09-08
1943	1943-05-22	1943-10-04
1944	1944-05-27	1944-07-30
1953	1953-05-06	1953-08-31
1954	1954-06-23	1954-08-31
1955	1955-05-20	1955-09-05
1956	1956-05-21	1956-08-05
1957	1957-07-10	1957-08-09
1958	1958-05-12	1958-08-11
1959	1959-06-04	1959-08-28
1960	1960-05-13	1960-09-02
1961	1961-05-21	1961-08-31
1962	1962-06-26	1962-08-22
1963	1963-05-30	1963-10-04
1964	1964-05-20	1964-08-05
1965	1965-05-13	1965-08-23
1966	1966-05-21	1966-08-30
1967	1967-06-03	1967-09-06
1968	1968-06-03	1968-07-14
1969	1969-05-26	1969-09-13
1970	1970-05-17	1970-09-05
1971	1971-06-03	1971-08-28
1972	1972-05-16	1972-08-30
1973	1973-05-17	1973-08-31
1974	1974-06-19	1974-08-07
1975	1975-06-20	1975-07-30
1976	1976-06-02	1976-09-30
1977	1977-05-10	1977-07-22
1978	1978-05-23	1978-09-05
1979	1979-06-13	1979-09-16
1980	1980-04-18	1980-09-07
1981	1981-05-21	1981-09-10
1982	1982-07-03	1982-09-10
1983	1983-06-10	1983-09-02

Every Fixed Threshold

Fixed thresholds at Portage Southport A
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	34	36	1983	36
35 C (95 F): Days	20	5	1961	5
40 C (104 F): Days	1	1	1983	1
90 F (32.2 C): Days	34	22	1961	18
100 F (37.8 C): Days	2	2	1983	2
0 C (32 F): Ice days (max	34	139	1955	108
0 C (32 F): Frost days (min	34	209	1959	197
-10 C (14 F): Days with min	34	135	1955	97
-20 C (-4 F): Days with min	34	78	1978	42
-30 C (-22 F): Days with min	33	28	1966	7
-40 C (-40 F): Days with min	2	1	1943	1
20 C (68 F): Tropical nights (min	21	6	1960	2
10 mm (0.39 in): Days with 10 mm or more rain	34	22	1962	10
25 mm (0.98 in): Days with 25 mm or more rain	31	7	1962	6
50 mm (1.97 in): Days with 50 mm or more rain	10	2	1944	2
10 cm (3.9 in): Days with 10 cm or more snowfall	34	6	1970	1
25 cm (9.8 in): Days with 25 cm or more snowfall	2	1	1943	1
50 cm (19.7 in): Days with 50 cm or more snowfall	1	1	1966	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1942.

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Data for Portage Southport A 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 2026-10-17. Last revised 17 October 2026 (2026-10-17).

Portage Southport A Threshold Days by Year (CA005012320)

Key Facts for Portage Southport A Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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