Prudhoe Bay Threshold Days by Year (USC00507780)

9 fixed thresholds counted per year at Prudhoe Bay (USC00507780): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Prudhoe Bay Thresholds

Prudhoe Bay: days with a maximum temperature at or below 0 C (32 F) in 30 years, most in 1994 with 255.
Prudhoe Bay: nights with a minimum temperature at or below 0 C (32 F) in 30 years, most in 1991 with 317.
Prudhoe Bay: nights with a minimum temperature at or below -10 C (14 F) in 30 years, most in 1992 with 222.
Prudhoe Bay: nights with a minimum temperature at or below -20 C (-4 F) in 30 years, most in 1974 with 179.
9 fixed thresholds have at least one qualifying day at Prudhoe Bay.

Nights at or below 0 C (32 F)

30 years with a qualifying day

Days per year at Prudhoe Bay with nights with a minimum temperature at or below 0 C (32 F), with the decade average as a line. The most was 317 in 1991.

Nights at or below 0 C (32 F) per year at Prudhoe Bay
Year	Days	Decade average
1969	307	307
1970	280	284.4
1971	283	284.4
1972	283	284.4
1973	282	284.4
1974	302	284.4
1975	299	284.4
1976	285	284.4
1977	265	284.4
1978	295	284.4
1979	270	284.4
1980	274	284.9
1981	284	284.9
1982	280	284.9
1983	277	284.9
1984	286	284.9
1985	297	284.9
1986	282	284.9
1987	293	284.9
1988	300	284.9
1989	276	284.9
1990	295	285.1
1991	317	285.1
1992	297	285.1
1993	279	285.1
1994	293	285.1
1995	267	285.1
1996	289	285.1
1997	276	285.1
1998	253	285.1

For each year, a bar from the first to the last day at Prudhoe Bay meeting 0 C (32 F).

First to last qualifying date each year at Prudhoe Bay
Year	First date	Last date
1969	1969-01-02	1969-12-31
1970	1970-01-01	1970-12-31
1971	1971-01-01	1971-12-30
1972	1972-01-01	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	1982-12-30
1983	1983-01-02	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
1989	1989-01-01	1989-12-31
1990	1990-01-01	1990-12-31
1991	1991-01-01	1991-12-31
1992	1992-01-01	1992-12-31
1993	1993-01-01	1993-12-31
1994	1994-01-01	1994-12-31
1995	1995-01-01	1995-12-31
1996	1996-01-01	1996-12-31
1997	1997-01-01	1997-12-31
1998	1998-01-01	1998-12-31

Every Fixed Threshold

Fixed thresholds at Prudhoe Bay
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
0 C (32 F): Ice days (max	30	255	1994	216
0 C (32 F): Frost days (min	30	317	1991	253
-10 C (14 F): Days with min	30	222	1992	183
-20 C (-4 F): Days with min	30	179	1974	105
-30 C (-22 F): Days with min	30	123	1974	54
-40 C (-40 F): Days with min	30	41	1974	9
10 mm (0.39 in): Days with 10 mm or more rain	7	2	1997	2
25 mm (0.98 in): Days with 25 mm or more rain	1	1	1992	1
10 cm (3.9 in): Days with 10 cm or more snowfall	5	3	1992	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1969.

Download the Data

Data for Prudhoe Bay 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).

Prudhoe Bay Threshold Days by Year (USC00507780)

Key Facts for Prudhoe Bay Thresholds

Nights at or below 0 C (32 F)

Every Fixed Threshold

Download the Data

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