Barter Island WSO AP Threshold Days by Year (USW00027401)

10 fixed thresholds counted per year at Barter Island WSO AP (USW00027401): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Barter Island WSO AP Thresholds

Barter Island WSO AP: nights with a minimum temperature at or below 0 C (32 F) in 42 years, most in 1969 with 340.
Barter Island WSO AP: nights with a minimum temperature at or below -10 C (14 F) in 42 years, most in 1970 with 236.
Barter Island WSO AP: nights with a minimum temperature at or below -20 C (-4 F) in 42 years, most in 1974 with 185.
Barter Island WSO AP: nights with a minimum temperature at or below -30 C (-22 F) in 42 years, most in 1974 with 110.
10 fixed thresholds have at least one qualifying day at Barter Island WSO AP.

Nights at or below 0 C (32 F)

42 years with a qualifying day

Days per year at Barter Island WSO AP with nights with a minimum temperature at or below 0 C (32 F), with the decade average as a line. The most was 340 in 1969.

Nights at or below 0 C (32 F) per year at Barter Island WSO AP
Year	Days	Decade average
1948	315	316
1949	317	316
1950	281	301.5
1951	288	301.5
1952	320	301.5
1953	311	301.5
1954	294	301.5
1955	310	301.5
1956	309	301.5
1957	296	301.5
1958	272	301.5
1959	334	301.5
1960	325	319.8
1961	318	319.8
1962	309	319.8
1963	315	319.8
1964	320	319.8
1965	324	319.8
1966	317	319.8
1967	331	319.8
1968	299	319.8
1969	340	319.8
1970	310	311.8
1971	301	311.8
1972	304	311.8
1973	312	311.8
1974	337	311.8
1975	329	311.8
1976	320	311.8
1977	308	311.8
1978	306	311.8
1979	291	311.8
1980	298	303.7
1981	305	303.7
1982	299	303.7
1983	310	303.7
1984	320	303.7
1985	306	303.7
1986	293	303.7
1987	290	303.7
1988	312	303.7
2026	163	163

For each year, a bar from the first to the last day at Barter Island WSO AP meeting 0 C (32 F).

First to last qualifying date each year at Barter Island WSO AP
Year	First date	Last date
1948	1948-01-01	1948-12-31
1949	1949-01-01	1949-12-31
1950	1950-01-01	1950-12-31
1951	1951-01-01	1951-12-31
1952	1952-01-01	1952-12-31
1953	1953-01-01	1953-12-31
1954	1954-01-01	1954-12-31
1955	1955-01-01	1955-12-31
1956	1956-01-01	1956-12-31
1957	1957-01-01	1957-12-31
1958	1958-01-01	1958-12-31
1959	1959-01-01	1959-12-31
1960	1960-01-01	1960-12-31
1961	1961-01-01	1961-12-31
1962	1962-01-01	1962-12-31
1963	1963-01-01	1963-12-31
1964	1964-01-01	1964-12-31
1965	1965-01-01	1965-12-31
1966	1966-01-01	1966-12-31
1967	1967-01-01	1967-12-31
1968	1968-01-01	1968-12-31
1969	1969-01-01	1969-12-31
1970	1970-01-01	1970-12-31
1971	1971-01-01	1971-12-31
1972	1972-01-02	1972-12-31
1973	1973-01-01	1973-12-31
1974	1974-01-01	1974-12-31
1975	1975-01-01	1975-12-31
1976	1976-01-01	1976-12-31
1977	1977-01-01	1977-12-31
1978	1978-01-01	1978-12-31
1979	1979-01-01	1979-12-31
1980	1980-01-01	1980-12-31
1981	1981-01-01	1981-12-31
1982	1982-01-01	1982-12-31
1983	1983-01-01	1983-12-31
1984	1984-01-01	1984-12-31
1985	1985-01-01	1985-12-31
1986	1986-01-01	1986-12-31
1987	1987-01-01	1987-12-31
1988	1988-01-01	1988-12-31
2026	2026-01-01	2026-10-13

Every Fixed Threshold

Fixed thresholds at Barter Island WSO AP
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
0 C (32 F): Ice days (max	41	269	1952	127
0 C (32 F): Frost days (min	42	340	1969	163
-10 C (14 F): Days with min	42	236	1970	93
-20 C (-4 F): Days with min	42	185	1974	67
-30 C (-22 F): Days with min	42	110	1974	25
-40 C (-40 F): Days with min	42	26	1965	3
10 mm (0.39 in): Days with 10 mm or more rain	25	10	1954	1
25 mm (0.98 in): Days with 25 mm or more rain	5	2	1950	1
10 cm (3.9 in): Days with 10 cm or more snowfall	21	11	1954	1
25 cm (9.8 in): Days with 25 cm or more snowfall	2	3	1954	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 Barter Island WSO AP 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).

Barter Island WSO AP Threshold Days by Year (USW00027401)

Key Facts for Barter Island WSO AP Thresholds

Nights at or below 0 C (32 F)

Every Fixed Threshold

Download the Data

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