Anchor River Divide Weather Records (USS0051K05S)

Record envelope, standing records and threshold days for Anchor River Divide (USS0051K05S), Alaska, United States, with 43 years of record.

Key Facts for Anchor River Divide

Anchor River Divide (USS0051K05S) is a weather station in Alaska, United States at 59.86 latitude and -151.32 longitude, 504 m (1,653 ft) above sea level.
The station reports from 1984 to 2026, 43 years of record.
1,464 records set at Anchor River Divide still stand.
Records are tracked for prcp: an element needs 30 years of data to be eligible.
Anchor River Divide set a monthly record daily precipitation of 33.0 mm (1.3 in) on 19 July 2026.

About the Station

Location: Alaska, United States, 59.86 latitude, -151.32 longitude.
Elevation: 504 m (1,653 ft).
Period of record: 1984 to 2026, 43 years.
Eligible elements: prcp.

Daily Record Envelope and 2026

22 days at or beyond a record

The band shows the record high and record low for each calendar day at Anchor River Divide. The lines show the 2026 daily maximum and minimum. 22 days in 2026 matched or passed a record. Temperatures are in degrees Celsius.

Daily record high and record low at Anchor River Divide, with 2026 drawn through them
Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	8.9 C (48.0 F)	-27.4 C (-17.3 F)	6.7 C (44.1 F)	-24.4 C (-11.9 F)
Feb	8.7 C (47.7 F)	-26.4 C (-15.5 F)	4.4 C (39.9 F)	-23.3 C (-9.9 F)
Mar	12.2 C (54.0 F)	-24.9 C (-12.8 F)	2.2 C (36.0 F)	-20.0 C (-4.0 F)
Apr	20.7 C (69.3 F)	-18.7 C (-1.7 F)	7.2 C (45.0 F)	-7.8 C (18.0 F)
May	25.8 C (78.4 F)	-7.7 C (18.1 F)	11.7 C (53.1 F)	-2.2 C (28.0 F)
Jun	29.6 C (85.3 F)	-1.3 C (29.7 F)	23.9 C (75.0 F)	0.6 C (33.1 F)
Jul	28.1 C (82.6 F)	0.7 C (33.3 F)	23.3 C (73.9 F)	2.8 C (37.0 F)
Aug	29.4 C (84.9 F)	0.6 C (33.1 F)	21.7 C (71.1 F)	3.3 C (37.9 F)
Sep	23.1 C (73.6 F)	-6.7 C (19.9 F)	18.9 C (66.0 F)	-1.1 C (30.0 F)
Oct	15.4 C (59.7 F)	-14.1 C (6.6 F)	7.2 C (45.0 F)	-5.6 C (21.9 F)
Nov	10.0 C (50.0 F)	-21.1 C (-6.0 F)	n/a	n/a
Dec	6.6 C (43.9 F)	-26.3 C (-15.3 F)	n/a	n/a

Which Years Hold Standing Records

1,464 standing records

1,464 records at Anchor River Divide still stand. 2013 holds the most, with 107.

Standing records at Anchor River Divide by the year they were set
Year set	Standing records
2004	47
2005	51
2006	44
2007	58
2008	75
2009	93
2010	63
2011	60
2012	98
2013	107
2014	80
2015	67
2016	94
2017	71
2018	18
2019	26
2020	76
2021	71
2022	59
2023	25
2024	67
2025	55
2026	59

Wettest Day of Each Month

Dec: 76.2 mm (3.0 in)

The wettest day on record for each calendar month at Anchor River Divide. The most was 76.2 mm (3.0 in) on 9 December 2019.

Record daily precipitation for each month at Anchor River Divide
Month	Record daily precipitation (mm)	Date
Jan	43.2 mm (1.7 in)	22 January 1987
Feb	35.6 mm (1.4 in)	21 February 2016
Mar	43.2 mm (1.7 in)	10 March 1988
Apr	27.9 mm (1.1 in)	26 April 1988
May	20.3 mm (0.8 in)	23 May 2005
Jun	25.4 mm (1.0 in)	15 June 2018
Jul	33.0 mm (1.3 in)	19 July 2026
Aug	40.6 mm (1.6 in)	28 August 2025
Sep	66.0 mm (2.6 in)	19 September 2012
Oct	53.3 mm (2.1 in)	30 October 2021
Nov	63.5 mm (2.5 in)	20 November 2007
Dec	76.2 mm (3.0 in)	9 December 2019

Period of Record Coverage

2004 to 2026

23 years of record at Anchor River Divide, 2004 to 2026. 7 years have data for under 90 percent of days and are left out of rankings: 2004, 2005, 2006, 2018, 2019, 2023, 2026.

Days with data per year at Anchor River Divide
Year	Days with data	Share of year	Complete
2004	160	44%	No
2005	228	62%	No
2006	265	73%	No
2007	336	92%	Yes
2008	366	100%	Yes
2009	365	100%	Yes
2010	365	100%	Yes
2011	363	99%	Yes
2012	366	100%	Yes
2013	365	100%	Yes
2014	364	100%	Yes
2015	359	98%	Yes
2016	366	100%	Yes
2017	365	100%	Yes
2018	180	49%	No
2019	110	30%	No
2020	365	100%	Yes
2021	364	100%	Yes
2022	355	97%	Yes
2023	286	78%	No
2024	365	100%	Yes
2025	364	100%	Yes
2026	281	77%	No

Latest Records

Latest records at Anchor River Divide
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
19 July 2026	Anchor River Divide, US	monthly rain	33.0 mm (1.3 in)	5.1 mm (0.20 in)	41 years	36 of 100 (Notable)
18 July 2026	Anchor River Divide, US	daily rain	10.2 mm (0.4 in)	2.6 mm (0.10 in)	8 years	11 of 100 (Routine)
23 June 2026	Anchor River Divide, US	daily rain	15.2 mm (0.6 in)	5.0 mm (0.20 in)	33 years	20 of 100 (Routine)
28 May 2026	Anchor River Divide, US	daily rain (Tie)	10.2 mm (0.4 in)	tie	16 years	2 of 100 (Routine)
22 May 2026	Anchor River Divide, US	daily rain	17.8 mm (0.7 in)	12.7 mm (0.5 in)	20 years	20 of 100 (Routine)
20 May 2026	Anchor River Divide, US	daily rain (Tie)	7.6 mm (0.30 in)	tie	36 years	3 of 100 (Routine)
10 May 2026	Anchor River Divide, US	daily rain (Tie)	5.1 mm (0.20 in)	tie	40 years	4 of 100 (Routine)
9 May 2026	Anchor River Divide, US	daily rain	7.6 mm (0.30 in)	2.5 mm (0.10 in)	36 years	20 of 100 (Routine)
1 May 2026	Anchor River Divide, US	daily rain (Tie)	7.6 mm (0.30 in)	tie	39 years	3 of 100 (Routine)
6 March 2026	Anchor River Divide, US	daily rain (Tie)	5.1 mm (0.20 in)	tie	36 years	3 of 100 (Routine)

Climate Trend

15 complete years, 2008 to 2025

One stripe for each of 15 complete years at Anchor River Divide, 2008 to 2025. Blue stripes are years cooler than the station's own mean of 1.9 C (35.5 F); red stripes are warmer. The coolest year was 2008, at -0.2 C (31.7 F), and the warmest was 2016, at 4.6 C (40.3 F). The strongest colour marks a difference of 2.7 C (4.9 F).

Annual mean temperature at Anchor River Divide as warming stripes, 2008 to 2025
Year	Annual mean temperature	Difference from the station mean
2008	-0.2 C	-2.11 C
2009	1.4 C	-0.55 C
2010	1.5 C	-0.44 C
2011	0.7 C	-1.27 C
2012	0.1 C	-1.88 C
2013	1.8 C	-0.10 C
2014	3.3 C	+1.41 C
2015	3.1 C	+1.18 C
2016	4.6 C	+2.67 C
2017	2.5 C	+0.53 C
2020	2.3 C	+0.39 C
2021	0.7 C	-1.22 C
2022	2.4 C	+0.48 C
2024	2.1 C	+0.15 C
2025	2.8 C	+0.82 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

1984 to 2026

Yearly extremes at Anchor River Divide: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Hottest day (TXx)	29.6 C (85.3 F)	2013	23.9 C (75.0 F)	23
Coldest night (TNn)	-27.4 C (-17.3 F)	2007	-22.6 C (-8.7 F)	23
Wettest day (Rx1day)	76.2 mm (3.0 in)	2019	35.6 mm (1.4 in)	32
Wettest five days (Rx5day)	144.8 mm (5.7 in)	2007	67.3 mm (2.6 in)	32
Longest dry spell (CDD)	37 days	1991	22 days	32

Hottest day (TXx)

The hottest day of the year at Anchor River Divide, 1984 to 2026. The record is 29.6 C (85.3 F) in 2013, marked on the chart; the median year is 23.9 C (75.0 F).

Hottest day (TXx) at Anchor River Divide by year
Year	Hottest day (TXx)
1984	n/a
1985	n/a
1986	n/a
1987	n/a
1988	n/a
1989	n/a
1990	n/a
1991	n/a
1992	n/a
2004	29.4 C (84.9 F)
2005	23.5 C (74.3 F)
2006	25.8 C (78.4 F)
2007	25.6 C (78.1 F)
2008	20.9 C (69.6 F)
2009	28.1 C (82.6 F)
2010	21.2 C (70.2 F)
2011	22.6 C (72.7 F)
2012	23.7 C (74.7 F)
2013	29.6 C (85.3 F)
2014	23.9 C (75.0 F)
2015	29.0 C (84.2 F)
2016	26.5 C (79.7 F)
2017	26.2 C (79.2 F)
2018	21.7 C (71.1 F)
2019	20.6 C (69.1 F)
2020	26.7 C (80.1 F)
2021	25.6 C (78.1 F)
2022	24.4 C (75.9 F)
2023	22.2 C (72.0 F)
2024	23.3 C (73.9 F)
2025	23.9 C (75.0 F)
2026	23.9 C (75.0 F)

Coldest night (TNn)

The coldest night of the year at Anchor River Divide, 1984 to 2026. The record is -27.4 C (-17.3 F) in 2007, marked on the chart; the median year is -22.6 C (-8.7 F).

Coldest night (TNn) at Anchor River Divide by year
Year	Coldest night (TNn)
1984	n/a
1985	n/a
1986	n/a
1987	n/a
1988	n/a
1989	n/a
1990	n/a
1991	n/a
1992	n/a
2004	-17.8 C (0.0 F)
2005	-22.6 C (-8.7 F)
2006	-24.7 C (-12.5 F)
2007	-27.4 C (-17.3 F)
2008	-24.2 C (-11.6 F)
2009	-26.4 C (-15.5 F)
2010	-24.9 C (-12.8 F)
2011	-26.3 C (-15.3 F)
2012	-25.9 C (-14.6 F)
2013	-24.7 C (-12.5 F)
2014	-21.4 C (-6.5 F)
2015	-23.1 C (-9.6 F)
2016	-16.8 C (1.8 F)
2017	-21.6 C (-6.9 F)
2018	-19.6 C (-3.3 F)
2019	-18.3 C (-0.9 F)
2020	-21.7 C (-7.1 F)
2021	-21.7 C (-7.1 F)
2022	-19.4 C (-2.9 F)
2023	-17.8 C (0.0 F)
2024	-22.2 C (-8.0 F)
2025	-22.8 C (-9.0 F)
2026	-24.4 C (-11.9 F)

Wettest day (Rx1day)

The wettest day of the year at Anchor River Divide, 1984 to 2026. The record is 76.2 mm (3.0 in) in 2019, marked on the chart; the median year is 35.6 mm (1.4 in).

Wettest day (Rx1day) at Anchor River Divide by year
Year	Wettest day (Rx1day)
1984	25.4 mm (1.0 in)
1985	33.0 mm (1.3 in)
1986	48.3 mm (1.9 in)
1987	43.2 mm (1.7 in)
1988	43.2 mm (1.7 in)
1989	25.4 mm (1.0 in)
1990	33.0 mm (1.3 in)
1991	20.3 mm (0.8 in)
1992	22.9 mm (0.9 in)
2004	30.5 mm (1.2 in)
2005	48.3 mm (1.9 in)
2006	27.9 mm (1.1 in)
2007	63.5 mm (2.5 in)
2008	30.5 mm (1.2 in)
2009	45.7 mm (1.8 in)
2010	45.7 mm (1.8 in)
2011	33.0 mm (1.3 in)
2012	66.0 mm (2.6 in)
2013	40.6 mm (1.6 in)
2014	27.9 mm (1.1 in)
2015	30.5 mm (1.2 in)
2016	45.7 mm (1.8 in)
2017	22.9 mm (0.9 in)
2018	48.3 mm (1.9 in)
2019	76.2 mm (3.0 in)
2020	43.2 mm (1.7 in)
2021	53.3 mm (2.1 in)
2022	38.1 mm (1.5 in)
2023	17.8 mm (0.7 in)
2024	33.0 mm (1.3 in)
2025	40.6 mm (1.6 in)
2026	33.0 mm (1.3 in)

Wettest five days (Rx5day)

The wettest five days of the year at Anchor River Divide, 1984 to 2026. The record is 144.8 mm (5.7 in) in 2007, marked on the chart; the median year is 67.3 mm (2.6 in).

Wettest five days (Rx5day) at Anchor River Divide by year
Year	Wettest five days (Rx5day)
1984	53.2 mm (2.1 in)
1985	66.0 mm (2.6 in)
1986	94.0 mm (3.7 in)
1987	63.5 mm (2.5 in)
1988	111.8 mm (4.4 in)
1989	73.7 mm (2.9 in)
1990	68.6 mm (2.7 in)
1991	43.2 mm (1.7 in)
1992	43.2 mm (1.7 in)
2004	55.9 mm (2.2 in)
2005	66.0 mm (2.6 in)
2006	73.7 mm (2.9 in)
2007	144.8 mm (5.7 in)
2008	53.2 mm (2.1 in)
2009	68.5 mm (2.7 in)
2010	114.2 mm (4.5 in)
2011	60.9 mm (2.4 in)
2012	129.5 mm (5.1 in)
2013	86.3 mm (3.4 in)
2014	48.1 mm (1.9 in)
2015	63.5 mm (2.5 in)
2016	96.5 mm (3.8 in)
2017	48.3 mm (1.9 in)
2018	94.0 mm (3.7 in)
2019	114.3 mm (4.5 in)
2020	76.2 mm (3.0 in)
2021	86.3 mm (3.4 in)
2022	61.0 mm (2.4 in)
2023	43.2 mm (1.7 in)
2024	66.1 mm (2.6 in)
2025	94.0 mm (3.7 in)
2026	66.1 mm (2.6 in)

Longest dry spell (CDD)

The longest dry spell of the year at Anchor River Divide, 1984 to 2026. The record is 37 days in 1991, marked on the chart; the median year is 22 days.

Longest dry spell (CDD) at Anchor River Divide by year
Year	Longest dry spell (CDD)
1984	16 days
1985	15 days
1986	17 days
1987	15 days
1988	20 days
1989	26 days
1990	23 days
1991	37 days
1992	15 days
2004	4 days
2005	20 days
2006	21 days
2007	26 days
2008	15 days
2009	33 days
2010	24 days
2011	20 days
2012	14 days
2013	30 days
2014	35 days
2015	20 days
2016	19 days
2017	34 days
2018	26 days
2019	33 days
2020	28 days
2021	26 days
2022	29 days
2023	16 days
2024	23 days
2025	27 days
2026	20 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 Anchor River Divide standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Anchor River Divide 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). Records are computed by this site and are not official.

Data as of 2026-10-12. Last revised 12 October 2026 (2026-10-12).