Clear 4 N Weather Records (USC00502005)

Record envelope, standing records and threshold days for Clear 4 N (USC00502005), Alaska, United States, with 33 years of record.

Key Facts for Clear 4 N

Clear 4 N (USC00502005) is a weather station in Alaska, United States at 64.35 latitude and -149.04 longitude, 151 m (495 ft) above sea level.
The station reports from 1965 to 1997, 33 years of record.
1,464 records set at Clear 4 N 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, 64.35 latitude, -149.04 longitude.
Elevation: 151 m (495 ft).
Period of record: 1965 to 1997, 33 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 Clear 4 N. 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 Clear 4 N, with 2026 drawn through them
Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	10.6 C (51.1 F)	-52.8 C (-63.0 F)	n/a	n/a
Feb	12.8 C (55.0 F)	-49.4 C (-56.9 F)	n/a	n/a
Mar	11.1 C (52.0 F)	-45.0 C (-49.0 F)	n/a	n/a
Apr	21.7 C (71.1 F)	-32.2 C (-26.0 F)	n/a	n/a
May	26.7 C (80.1 F)	-8.3 C (17.1 F)	n/a	n/a
Jun	35.6 C (96.1 F)	-1.1 C (30.0 F)	n/a	n/a
Jul	32.2 C (90.0 F)	0.0 C (32.0 F)	n/a	n/a
Aug	29.4 C (84.9 F)	-5.6 C (21.9 F)	n/a	n/a
Sep	25.0 C (77.0 F)	-16.1 C (3.0 F)	n/a	n/a
Oct	16.7 C (62.1 F)	-33.9 C (-29.0 F)	n/a	n/a
Nov	11.7 C (53.1 F)	-46.7 C (-52.1 F)	n/a	n/a
Dec	9.4 C (48.9 F)	-49.4 C (-56.9 F)	n/a	n/a

Which Years Hold Standing Records

1,464 standing records

1,464 records at Clear 4 N still stand. 1966 holds the most, with 101.

Standing records at Clear 4 N by the year they were set
Year set	Standing records
1965	11
1966	101
1967	65
1968	51
1969	63
1970	86
1971	80
1972	64
1973	51
1974	59
1975	45
1976	40
1977	41
1978	33
1979	64
1980	56
1981	66
1982	33
1983	45
1984	28
1985	81
1986	56
1987	38
1988	47
1989	67
1990	47
1991	46

Wettest Day of Each Month

Aug: 116.3 mm (4.6 in)

The wettest day on record for each calendar month at Clear 4 N. The most was 116.3 mm (4.6 in) on 13 August 1967.

Record daily precipitation for each month at Clear 4 N
Month	Record daily precipitation (mm)	Date
Jan	17.8 mm (0.7 in)	29 January 1968
Feb	22.9 mm (0.9 in)	7 February 1983
Mar	19.3 mm (0.8 in)	23 March 1991
Apr	7.6 mm (0.30 in)	19 April 1966
May	20.8 mm (0.8 in)	25 May 1973
Jun	38.1 mm (1.5 in)	29 June 1979
Jul	41.1 mm (1.6 in)	6 July 1979
Aug	116.3 mm (4.6 in)	13 August 1967
Sep	33.0 mm (1.3 in)	6 September 1985
Oct	16.5 mm (0.6 in)	21 October 1966
Nov	16.0 mm (0.6 in)	16 November 1985
Dec	21.8 mm (0.9 in)	19 December 1970

Period of Record Coverage

1965 to 1991

27 years of record at Clear 4 N, 1965 to 1991. 23 years have data for under 90 percent of days and are left out of rankings: 1965, 1969, 1970, 1971, 1972, 1974, 1975, 1976 and others.

Days with data per year at Clear 4 N
Year	Days with data	Share of year	Complete
1965	24	7%	No
1966	353	97%	Yes
1967	346	95%	Yes
1968	343	94%	Yes
1969	136	37%	No
1970	324	89%	No
1971	327	90%	No
1972	318	87%	No
1973	346	95%	Yes
1974	306	84%	No
1975	200	55%	No
1976	206	56%	No
1977	182	50%	No
1978	193	53%	No
1979	237	65%	No
1980	285	78%	No
1981	277	76%	No
1982	266	73%	No
1983	295	81%	No
1984	318	87%	No
1985	291	80%	No
1986	319	87%	No
1987	325	89%	No
1988	306	84%	No
1989	301	82%	No
1990	296	81%	No
1991	209	57%	No

Latest Records

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

Climate Trend

10 complete years, 1966 to 1988

One stripe for each of 10 complete years at Clear 4 N, 1966 to 1988. Blue stripes are years cooler than the station's own mean of -3.9 C (25.0 F); red stripes are warmer. The coolest year was 1966, at -6.2 C (20.9 F), and the warmest was 1987, at -2.1 C (28.2 F). The strongest colour marks a difference of 2.3 C (4.1 F).

Annual mean temperature at Clear 4 N as warming stripes, 1966 to 1988
Year	Annual mean temperature	Difference from the station mean
1966	-6.2 C	-2.27 C
1967	-2.9 C	+0.97 C
1968	-4.1 C	-0.21 C
1971	-5.7 C	-1.79 C
1973	-4.1 C	-0.19 C
1984	-4.3 C	-0.39 C
1985	-3.5 C	+0.36 C
1986	-3.5 C	+0.39 C
1987	-2.1 C	+1.78 C
1988	-2.5 C	+1.35 C

This station does not have enough complete years (30 are needed) to fit a temperature trend.

A year is complete when all 12 months have at least 20 days of both daily maximum and daily minimum readings. The annual mean is the mean of the monthly means. The trend describes this one station over this period; it does not say what caused the change.

Extremes by Year

1965 to 1997

Yearly extremes at Clear 4 N: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Hottest day (TXx)	35.6 C (96.1 F)	1969	29.4 C (84.9 F)	27
Coldest night (TNn)	-52.8 C (-63.0 F)	1975	-46.7 C (-52.1 F)	27
Wettest day (Rx1day)	116.3 mm (4.6 in)	1967	22.6 mm (0.9 in)	27
Wettest five days (Rx5day)	233.2 mm (9.2 in)	1967	41.9 mm (1.6 in)	27
Longest dry spell (CDD)	71 days	1987	40 days	27

Hottest day (TXx)

The hottest day of the year at Clear 4 N, 1965 to 1997. The record is 35.6 C (96.1 F) in 1969, marked on the chart; the median year is 29.4 C (84.9 F).

Hottest day (TXx) at Clear 4 N by year
Year	Hottest day (TXx)
1965	-1.7 C (28.9 F)
1966	27.8 C (82.0 F)
1967	31.7 C (89.1 F)
1968	32.2 C (90.0 F)
1969	35.6 C (96.1 F)
1970	29.4 C (84.9 F)
1971	30.6 C (87.1 F)
1972	30.0 C (86.0 F)
1973	26.7 C (80.1 F)
1974	28.3 C (82.9 F)
1975	32.2 C (90.0 F)
1976	30.0 C (86.0 F)
1977	31.1 C (88.0 F)
1978	27.2 C (81.0 F)
1979	26.7 C (80.1 F)
1980	27.2 C (81.0 F)
1981	26.1 C (79.0 F)
1982	29.4 C (84.9 F)
1983	31.7 C (89.1 F)
1984	26.7 C (80.1 F)
1985	26.7 C (80.1 F)
1986	31.1 C (88.0 F)
1987	32.2 C (90.0 F)
1988	29.4 C (84.9 F)
1989	28.3 C (82.9 F)
1990	29.4 C (84.9 F)
1991	33.9 C (93.0 F)
1997	n/a

Coldest night (TNn)

The coldest night of the year at Clear 4 N, 1965 to 1997. The record is -52.8 C (-63.0 F) in 1975, marked on the chart; the median year is -46.7 C (-52.1 F).

Coldest night (TNn) at Clear 4 N by year
Year	Coldest night (TNn)
1965	-48.3 C (-54.9 F)
1966	-49.4 C (-56.9 F)
1967	-46.1 C (-51.0 F)
1968	-49.4 C (-56.9 F)
1969	-51.1 C (-60.0 F)
1970	-43.9 C (-47.0 F)
1971	-52.2 C (-62.0 F)
1972	-46.7 C (-52.1 F)
1973	-48.9 C (-56.0 F)
1974	-49.4 C (-56.9 F)
1975	-52.8 C (-63.0 F)
1976	-43.3 C (-45.9 F)
1977	-48.3 C (-54.9 F)
1978	-33.3 C (-27.9 F)
1979	-47.2 C (-53.0 F)
1980	-46.7 C (-52.1 F)
1981	-42.8 C (-45.0 F)
1982	-46.7 C (-52.1 F)
1983	-47.8 C (-54.0 F)
1984	-45.0 C (-49.0 F)
1985	-42.8 C (-45.0 F)
1986	-37.8 C (-36.0 F)
1987	-41.1 C (-42.0 F)
1988	-40.0 C (-40.0 F)
1989	-52.8 C (-63.0 F)
1990	-46.7 C (-52.1 F)
1991	-47.8 C (-54.0 F)
1997	n/a

Wettest day (Rx1day)

The wettest day of the year at Clear 4 N, 1965 to 1997. The record is 116.3 mm (4.6 in) in 1967, marked on the chart; the median year is 22.6 mm (0.9 in).

Wettest day (Rx1day) at Clear 4 N by year
Year	Wettest day (Rx1day)
1965	15.0 mm (0.6 in)
1966	19.3 mm (0.8 in)
1967	116.3 mm (4.6 in)
1968	17.8 mm (0.7 in)
1969	25.7 mm (1.0 in)
1970	21.8 mm (0.9 in)
1971	32.0 mm (1.3 in)
1972	18.5 mm (0.7 in)
1973	23.4 mm (0.9 in)
1974	17.3 mm (0.7 in)
1975	22.4 mm (0.9 in)
1976	22.9 mm (0.9 in)
1977	12.7 mm (0.5 in)
1978	16.0 mm (0.6 in)
1979	41.1 mm (1.6 in)
1980	38.1 mm (1.5 in)
1981	16.8 mm (0.7 in)
1982	23.4 mm (0.9 in)
1983	23.9 mm (0.9 in)
1984	23.1 mm (0.9 in)
1985	33.0 mm (1.3 in)
1986	22.6 mm (0.9 in)
1987	19.3 mm (0.8 in)
1988	18.0 mm (0.7 in)
1989	36.3 mm (1.4 in)
1990	38.1 mm (1.5 in)
1991	19.3 mm (0.8 in)
1997	n/a

Wettest five days (Rx5day)

The wettest five days of the year at Clear 4 N, 1965 to 1997. The record is 233.2 mm (9.2 in) in 1967, marked on the chart; the median year is 41.9 mm (1.6 in).

Wettest five days (Rx5day) at Clear 4 N by year
Year	Wettest five days (Rx5day)
1965	24.4 mm (1.0 in)
1966	31.7 mm (1.2 in)
1967	233.2 mm (9.2 in)
1968	55.2 mm (2.2 in)
1969	25.7 mm (1.0 in)
1970	40.7 mm (1.6 in)
1971	41.7 mm (1.6 in)
1972	44.9 mm (1.8 in)
1973	41.2 mm (1.6 in)
1974	24.6 mm (1.0 in)
1975	47.8 mm (1.9 in)
1976	27.8 mm (1.1 in)
1977	22.1 mm (0.9 in)
1978	21.6 mm (0.9 in)
1979	53.5 mm (2.1 in)
1980	46.9 mm (1.8 in)
1981	44.0 mm (1.7 in)
1982	60.3 mm (2.4 in)
1983	41.9 mm (1.6 in)
1984	55.4 mm (2.2 in)
1985	40.4 mm (1.6 in)
1986	61.5 mm (2.4 in)
1987	25.8 mm (1.0 in)
1988	24.7 mm (1.0 in)
1989	47.9 mm (1.9 in)
1990	71.9 mm (2.8 in)
1991	47.7 mm (1.9 in)
1997	n/a

Longest dry spell (CDD)

The longest dry spell of the year at Clear 4 N, 1965 to 1997. The record is 71 days in 1987, marked on the chart; the median year is 40 days.

Longest dry spell (CDD) at Clear 4 N by year
Year	Longest dry spell (CDD)
1965	10 days
1966	35 days
1967	32 days
1968	58 days
1969	43 days
1970	37 days
1971	36 days
1972	44 days
1973	49 days
1974	48 days
1975	35 days
1976	44 days
1977	19 days
1978	38 days
1979	41 days
1980	54 days
1981	50 days
1982	10 days
1983	32 days
1984	58 days
1985	62 days
1986	37 days
1987	71 days
1988	41 days
1989	40 days
1990	31 days
1991	28 days
1997	n/a

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 Clear 4 N standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Clear 4 N 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).