Port Clarence Weather Records (USC00507669)

Record envelope, standing records and threshold days for Port Clarence (USC00507669), Alaska, United States, with 101 years of record.

Key Facts for Port Clarence

Port Clarence (USC00507669) is a weather station in Alaska, United States at 65.25 latitude and -166.87 longitude, 4 m (12 ft) above sea level.
The station reports from 1895 to 1995, 101 years of record.
1,464 records set at Port Clarence still stand.
Records are tracked for no element yet: an element needs 30 years of data to be eligible.

About the Station

Location: Alaska, United States, 65.25 latitude, -166.87 longitude.
Elevation: 4 m (12 ft).
Period of record: 1895 to 1995, 101 years.
Eligible elements: none yet.

Daily Record Envelope and 2026

0 days at or beyond a record

The band shows the record high and record low for each calendar day at Port Clarence. The lines show the 2026 daily maximum and minimum. 0 days in 2026 matched or passed a record. Temperatures are in degrees Celsius.

Daily record high and record low at Port Clarence, with 2026 drawn through them
Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	5.6 C (42.1 F)	-42.2 C (-44.0 F)	n/a	n/a
Feb	7.2 C (45.0 F)	-44.4 C (-47.9 F)	n/a	n/a
Mar	1.7 C (35.1 F)	-38.3 C (-36.9 F)	n/a	n/a
Apr	8.9 C (48.0 F)	-33.3 C (-27.9 F)	n/a	n/a
May	17.8 C (64.0 F)	-21.1 C (-6.0 F)	n/a	n/a
Jun	24.4 C (75.9 F)	-6.7 C (19.9 F)	n/a	n/a
Jul	27.2 C (81.0 F)	-6.7 C (19.9 F)	n/a	n/a
Aug	26.7 C (80.1 F)	-3.9 C (25.0 F)	n/a	n/a
Sep	22.2 C (72.0 F)	-7.8 C (18.0 F)	n/a	n/a
Oct	10.6 C (51.1 F)	-20.6 C (-5.1 F)	n/a	n/a
Nov	10.0 C (50.0 F)	-24.4 C (-11.9 F)	n/a	n/a
Dec	1.7 C (35.1 F)	-34.4 C (-29.9 F)	n/a	n/a

Which Years Hold Standing Records

1,464 standing records

1,464 records at Port Clarence still stand. 1975 holds the most, with 116.

Standing records at Port Clarence by the year they were set
Year set	Standing records
1895	40
1896	34
1897	30
1898	16
1975	116
1976	95
1977	105
1978	83
1979	29
1980	23
1982	33
1983	105
1984	94
1985	45
1986	66
1987	45
1988	58
1989	109
1990	45
1991	84
1992	92
1993	41
1994	56
1995	20

Wettest Day of Each Month

Feb: 104.4 mm (4.1 in)

The wettest day on record for each calendar month at Port Clarence. The most was 104.4 mm (4.1 in) on 25 February 1988.

Record daily precipitation for each month at Port Clarence
Month	Record daily precipitation (mm)	Date
Jan	48.8 mm (1.9 in)	2 January 1985
Feb	104.4 mm (4.1 in)	25 February 1988
Mar	30.5 mm (1.2 in)	9 March 1985
Apr	30.5 mm (1.2 in)	27 April 1990
May	25.4 mm (1.0 in)	6 May 1980
Jun	17.3 mm (0.7 in)	17 June 1980
Jul	30.5 mm (1.2 in)	8 July 1986
Aug	45.7 mm (1.8 in)	13 August 1980
Sep	55.9 mm (2.2 in)	10 September 1989
Oct	12.2 mm (0.5 in)	16 October 1982
Nov	48.3 mm (1.9 in)	15 November 1986
Dec	63.0 mm (2.5 in)	31 December 1984

Period of Record Coverage

1895 to 1995

23 years of record at Port Clarence, 1895 to 1995. 17 years have data for under 90 percent of days and are left out of rankings: 1895, 1896, 1897, 1977, 1979, 1980, 1982, 1983 and others.

Days with data per year at Port Clarence
Year	Days with data	Share of year	Complete
1895	83	23%	No
1896	65	18%	No
1897	73	20%	No
1975	341	93%	Yes
1976	334	91%	Yes
1977	310	85%	No
1978	332	91%	Yes
1979	62	17%	No
1980	163	45%	No
1982	167	46%	No
1983	316	87%	No
1984	261	71%	No
1985	163	45%	No
1986	216	59%	No
1987	161	44%	No
1988	356	97%	Yes
1989	356	98%	Yes
1990	264	72%	No
1991	329	90%	Yes
1992	299	82%	No
1993	296	81%	No
1994	228	62%	No
1995	141	39%	No

Latest Records

No records were set at this station in the latest data.

Extremes by Year

1895 to 1995

Yearly extremes at Port Clarence: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Hottest day (TXx)	27.2 C (81.0 F)	1977	21.1 C (70.0 F)	23
Coldest night (TNn)	-44.4 C (-47.9 F)	1984	-36.1 C (-33.0 F)	24
Wettest day (Rx1day)	104.4 mm (4.1 in)	1988	22.2 mm (0.9 in)	22
Wettest five days (Rx5day)	164.0 mm (6.5 in)	1988	34.8 mm (1.4 in)	21
Longest dry spell (CDD)	154 days	1993	31 days	22

Hottest day (TXx)

The hottest day of the year at Port Clarence, 1895 to 1995. The record is 27.2 C (81.0 F) in 1977, marked on the chart; the median year is 21.1 C (70.0 F).

Hottest day (TXx) at Port Clarence by year
Year	Hottest day (TXx)
1895	25.0 C (77.0 F)
1896	7.8 C (46.0 F)
1897	10.6 C (51.1 F)
1898	n/a
1975	20.6 C (69.1 F)
1976	20.6 C (69.1 F)
1977	27.2 C (81.0 F)
1978	22.2 C (72.0 F)
1979	2.8 C (37.0 F)
1980	21.7 C (71.1 F)
1982	24.4 C (75.9 F)
1983	21.1 C (70.0 F)
1984	21.1 C (70.0 F)
1985	25.6 C (78.1 F)
1986	21.7 C (71.1 F)
1987	20.6 C (69.1 F)
1988	22.8 C (73.0 F)
1989	18.3 C (64.9 F)
1990	21.1 C (70.0 F)
1991	23.3 C (73.9 F)
1992	20.6 C (69.1 F)
1993	25.6 C (78.1 F)
1994	19.4 C (66.9 F)
1995	20.6 C (69.1 F)

Coldest night (TNn)

The coldest night of the year at Port Clarence, 1895 to 1995. The record is -44.4 C (-47.9 F) in 1984, marked on the chart; the median year is -36.1 C (-33.0 F).

Coldest night (TNn) at Port Clarence by year
Year	Coldest night (TNn)
1895	-22.2 C (-8.0 F)
1896	-31.1 C (-24.0 F)
1897	-37.8 C (-36.0 F)
1898	-38.9 C (-38.0 F)
1975	-37.2 C (-35.0 F)
1976	-33.3 C (-27.9 F)
1977	-37.8 C (-36.0 F)
1978	-41.1 C (-42.0 F)
1979	-27.2 C (-17.0 F)
1980	-12.2 C (10.0 F)
1982	-23.3 C (-9.9 F)
1983	-38.9 C (-38.0 F)
1984	-44.4 C (-47.9 F)
1985	-38.3 C (-36.9 F)
1986	-33.3 C (-27.9 F)
1987	-30.0 C (-22.0 F)
1988	-35.0 C (-31.0 F)
1989	-42.2 C (-44.0 F)
1990	-32.2 C (-26.0 F)
1991	-39.4 C (-38.9 F)
1992	-38.3 C (-36.9 F)
1993	-41.1 C (-42.0 F)
1994	-35.0 C (-31.0 F)
1995	-33.3 C (-27.9 F)

Wettest day (Rx1day)

The wettest day of the year at Port Clarence, 1895 to 1995. The record is 104.4 mm (4.1 in) in 1988, marked on the chart; the median year is 22.2 mm (0.9 in).

Wettest day (Rx1day) at Port Clarence by year
Year	Wettest day (Rx1day)
1895	12.7 mm (0.5 in)
1896	5.1 mm (0.20 in)
1897	n/a
1898	n/a
1975	34.8 mm (1.4 in)
1976	15.2 mm (0.6 in)
1977	20.3 mm (0.8 in)
1978	12.4 mm (0.5 in)
1979	7.6 mm (0.30 in)
1980	45.7 mm (1.8 in)
1982	14.5 mm (0.6 in)
1983	6.6 mm (0.26 in)
1984	63.0 mm (2.5 in)
1985	48.8 mm (1.9 in)
1986	48.3 mm (1.9 in)
1987	29.0 mm (1.1 in)
1988	104.4 mm (4.1 in)
1989	55.9 mm (2.2 in)
1990	30.5 mm (1.2 in)
1991	25.4 mm (1.0 in)
1992	8.1 mm (0.32 in)
1993	24.1 mm (0.9 in)
1994	0.0 mm (0.00 in)
1995	0.0 mm (0.00 in)

Wettest five days (Rx5day)

The wettest five days of the year at Port Clarence, 1895 to 1995. The record is 164.0 mm (6.5 in) in 1988, marked on the chart; the median year is 34.8 mm (1.4 in).

Wettest five days (Rx5day) at Port Clarence by year
Year	Wettest five days (Rx5day)
1895	22.8 mm (0.9 in)
1896	n/a
1897	n/a
1898	n/a
1975	34.8 mm (1.4 in)
1976	22.8 mm (0.9 in)
1977	40.6 mm (1.6 in)
1978	21.1 mm (0.8 in)
1979	12.7 mm (0.5 in)
1980	48.1 mm (1.9 in)
1982	26.7 mm (1.1 in)
1983	6.6 mm (0.26 in)
1984	63.0 mm (2.5 in)
1985	114.3 mm (4.5 in)
1986	68.5 mm (2.7 in)
1987	55.4 mm (2.2 in)
1988	164.0 mm (6.5 in)
1989	26.4 mm (1.0 in)
1990	35.6 mm (1.4 in)
1991	50.8 mm (2.0 in)
1992	21.6 mm (0.9 in)
1993	39.8 mm (1.6 in)
1994	0.0 mm (0.00 in)
1995	0.0 mm (0.00 in)

Longest dry spell (CDD)

The longest dry spell of the year at Port Clarence, 1895 to 1995. The record is 154 days in 1993, marked on the chart; the median year is 31 days.

Longest dry spell (CDD) at Port Clarence by year
Year	Longest dry spell (CDD)
1895	11 days
1896	1 day
1897	n/a
1898	n/a
1975	35 days
1976	47 days
1977	74 days
1978	26 days
1979	21 days
1980	34 days
1982	18 days
1983	103 days
1984	33 days
1985	31 days
1986	21 days
1987	26 days
1988	39 days
1989	24 days
1990	28 days
1991	29 days
1992	45 days
1993	154 days
1994	30 days
1995	31 days

Each chart shows one value per year; the dot marks the record year. TXx is the hottest daily maximum, TNn the coldest daily minimum, Rx1day and Rx5day the largest one-day and five-day rain totals, and CDD the longest run of days with less than 1 mm of rain. A year with missing days can understate an extreme.

Download the Data

Data for Port Clarence standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Port Clarence 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 2026-10-14 (14 October 2026). Records are computed by this site and are not official.

Data as of 2025-12-31. Last revised 31 December 2025 (2025-12-31).