Record envelope, standing records and threshold days for Juneau Dwtn (USC00504094), Alaska, United States, with 57 years of record.
Key Facts for Juneau Dwtn
Juneau Dwtn (USC00504094) is a weather station in Alaska, United States at 58.30 latitude and -134.41 longitude, 15 m (50 ft) above sea level.
The station reports from 1965 to 2021, 57 years of record.
1,464 records set at Juneau Dwtn still stand.
Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
Juneau Dwtn set a daily record low maximum temperature of 8.3 C (46.9 F) on 23 September 2021.
About the Station
Location: Alaska, United States, 58.30 latitude, -134.41 longitude.
Elevation: 15 m (50 ft).
Period of record: 1965 to 2021, 57 years.
Eligible elements: tmax, tmin, prcp, snow, snwd.
Daily Record Envelope and 2026
0 days at or beyond a record
Record highRecord low2026 daily maximum2026 daily minimum
The band shows the record high and record low for each calendar day at Juneau Dwtn. 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 Juneau Dwtn, with 2026 drawn through them
Month
Highest record high
Lowest record low
2026 highest maximum
2026 lowest minimum
Jan
13.3 C (55.9 F)
-28.9 C (-20.0 F)
n/a
n/a
Feb
13.9 C (57.0 F)
-22.8 C (-9.0 F)
n/a
n/a
Mar
14.4 C (57.9 F)
-20.0 C (-4.0 F)
n/a
n/a
Apr
20.6 C (69.1 F)
-8.3 C (17.1 F)
n/a
n/a
May
26.1 C (79.0 F)
-2.2 C (28.0 F)
n/a
n/a
Jun
30.6 C (87.1 F)
0.0 C (32.0 F)
n/a
n/a
Jul
29.4 C (84.9 F)
5.6 C (42.1 F)
n/a
n/a
Aug
28.9 C (84.0 F)
0.0 C (32.0 F)
n/a
n/a
Sep
24.4 C (75.9 F)
-2.2 C (28.0 F)
n/a
n/a
Oct
17.2 C (63.0 F)
-8.9 C (16.0 F)
n/a
n/a
Nov
14.4 C (57.9 F)
-21.7 C (-7.1 F)
n/a
n/a
Dec
13.3 C (55.9 F)
-23.3 C (-9.9 F)
n/a
n/a
Which Years Hold Standing Records
1,464 standing records
Year with most
1,464 records at Juneau Dwtn still stand. 2016 holds the most, with 58.
Standing records at Juneau Dwtn by the year they were set
Year set
Standing records
1965
20
1966
47
1967
26
1968
37
1969
50
1970
45
1971
47
1972
42
1973
6
1974
3
1975
9
1976
30
1977
42
1978
21
1979
51
1980
31
1981
50
1982
32
1983
25
1984
32
1985
40
1986
28
1987
26
1988
8
1989
42
1990
25
1991
16
1992
54
1993
32
1994
1
1995
7
1996
14
1997
16
1998
49
1999
5
2002
2
2003
14
2004
22
2005
10
2006
21
2007
12
2008
9
2009
15
2010
22
2011
12
2012
29
2013
36
2014
14
2015
34
2016
58
2017
24
2018
38
2019
45
2020
24
2021
14
Wettest Day of Each Month
Dec: 127.0 mm (5.0 in)
The wettest day on record for each calendar month at Juneau Dwtn. The most was 127.0 mm (5.0 in) on 17 December 2006.
Record daily precipitation for each month at Juneau Dwtn
Month
Record daily precipitation (mm)
Date
Jan
79.0 mm (3.1 in)
14 January 2014
Feb
79.8 mm (3.1 in)
20 February 1988
Mar
91.4 mm (3.6 in)
13 March 1972
Apr
47.8 mm (1.9 in)
26 April 2013
May
63.5 mm (2.5 in)
19 May 1972
Jun
65.3 mm (2.6 in)
3 June 1977
Jul
56.9 mm (2.2 in)
16 July 1971
Aug
105.7 mm (4.2 in)
17 August 2009
Sep
115.6 mm (4.6 in)
28 September 1970
Oct
91.4 mm (3.6 in)
18 October 1978
Nov
105.2 mm (4.1 in)
30 November 1988
Dec
127.0 mm (5.0 in)
17 December 2006
Period of Record Coverage
1965 to 2021
Complete yearUnder 90 percent of days
55 years of record at Juneau Dwtn, 1965 to 2021. 28 years have data for under 90 percent of days and are left out of rankings: 1965, 1966, 1970, 1971, 1972, 1973, 1974, 1975 and others.
Cooler than the station meanWarmer than the station mean
One stripe for each of 21 complete years at Juneau Dwtn, 1967 to 2020. Blue stripes are years cooler than the station's own mean of 6.4 C (43.5 F); red stripes are warmer. The coolest year was 1982, at 4.8 C (40.6 F), and the warmest was 2016, at 8.0 C (46.5 F). The strongest colour marks a difference of 1.7 C (3.1 F).
Annual mean temperature at Juneau Dwtn as warming stripes, 1967 to 2020
Year
Annual mean temperature
Difference from the station mean
1967
6.2 C
-0.16 C
1968
5.9 C
-0.45 C
1969
6.0 C
-0.41 C
1979
5.5 C
-0.89 C
1980
6.0 C
-0.38 C
1981
7.0 C
+0.64 C
1982
4.8 C
-1.59 C
1983
6.1 C
-0.25 C
1984
6.5 C
+0.07 C
1985
5.5 C
-0.92 C
1986
6.5 C
+0.12 C
1987
6.9 C
+0.56 C
1989
6.5 C
+0.12 C
1992
6.5 C
+0.14 C
1993
7.6 C
+1.18 C
2009
6.2 C
-0.19 C
2012
5.5 C
-0.91 C
2016
8.0 C
+1.66 C
2018
7.0 C
+0.58 C
2019
7.6 C
+1.19 C
2020
6.2 C
-0.15 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 2021
Yearly extremes at Juneau Dwtn: the record and the median year
Measure
Record
Year of the record
Median year
Years with a value
Hottest day (TXx)
30.6 C (87.1 F)
1991
26.7 C (80.1 F)
55
Coldest night (TNn)
-28.9 C (-20.0 F)
1972
-15.6 C (3.9 F)
55
Wettest day (Rx1day)
127.0 mm (5.0 in)
2006
62.1 mm (2.4 in)
54
Wettest five days (Rx5day)
298.9 mm (11.8 in)
2005
130.4 mm (5.1 in)
54
Longest dry spell (CDD)
21 days
1989
11 days
54
Hottest day (TXx)
The hottest day of the year at Juneau Dwtn, 1965 to 2021. The record is 30.6 C (87.1 F) in 1991, marked on the chart; the median year is 26.7 C (80.1 F).
Hottest day (TXx) at Juneau Dwtn by year
Year
Hottest day (TXx)
1965
25.0 C (77.0 F)
1966
28.3 C (82.9 F)
1967
27.8 C (82.0 F)
1968
25.0 C (77.0 F)
1969
30.0 C (86.0 F)
1970
28.3 C (82.9 F)
1971
28.3 C (82.9 F)
1972
25.0 C (77.0 F)
1973
24.4 C (75.9 F)
1974
12.8 C (55.0 F)
1975
22.8 C (73.0 F)
1976
29.4 C (84.9 F)
1977
26.7 C (80.1 F)
1978
23.9 C (75.0 F)
1979
27.8 C (82.0 F)
1980
29.4 C (84.9 F)
1981
25.6 C (78.1 F)
1982
30.0 C (86.0 F)
1983
26.7 C (80.1 F)
1984
24.4 C (75.9 F)
1985
27.2 C (81.0 F)
1986
24.4 C (75.9 F)
1987
26.1 C (79.0 F)
1988
25.0 C (77.0 F)
1989
26.7 C (80.1 F)
1990
26.7 C (80.1 F)
1991
30.6 C (87.1 F)
1992
30.0 C (86.0 F)
1993
27.8 C (82.0 F)
1994
7.2 C (45.0 F)
1995
8.9 C (48.0 F)
1996
24.4 C (75.9 F)
1997
26.1 C (79.0 F)
1998
27.2 C (81.0 F)
1999
29.4 C (84.9 F)
2002
10.0 C (50.0 F)
2003
26.1 C (79.0 F)
2004
26.1 C (79.0 F)
2005
28.3 C (82.9 F)
2006
25.6 C (78.1 F)
2007
23.9 C (75.0 F)
2008
23.3 C (73.9 F)
2009
28.9 C (84.0 F)
2010
26.1 C (79.0 F)
2011
25.0 C (77.0 F)
2012
30.6 C (87.1 F)
2013
28.3 C (82.9 F)
2014
23.9 C (75.0 F)
2015
28.9 C (84.0 F)
2016
28.3 C (82.9 F)
2017
22.2 C (72.0 F)
2018
27.8 C (82.0 F)
2019
29.4 C (84.9 F)
2020
27.2 C (81.0 F)
2021
28.3 C (82.9 F)
Coldest night (TNn)
The coldest night of the year at Juneau Dwtn, 1965 to 2021. The record is -28.9 C (-20.0 F) in 1972, marked on the chart; the median year is -15.6 C (3.9 F).
Coldest night (TNn) at Juneau Dwtn by year
Year
Coldest night (TNn)
1965
-21.7 C (-7.1 F)
1966
-17.8 C (0.0 F)
1967
-18.9 C (-2.0 F)
1968
-22.8 C (-9.0 F)
1969
-20.0 C (-4.0 F)
1970
-23.3 C (-9.9 F)
1971
-25.0 C (-13.0 F)
1972
-28.9 C (-20.0 F)
1973
-13.3 C (8.1 F)
1974
-14.4 C (6.1 F)
1975
0.0 C (32.0 F)
1976
-10.6 C (12.9 F)
1977
-16.7 C (1.9 F)
1978
-16.7 C (1.9 F)
1979
-18.3 C (-0.9 F)
1980
-18.3 C (-0.9 F)
1981
-16.7 C (1.9 F)
1982
-16.1 C (3.0 F)
1983
-13.3 C (8.1 F)
1984
-16.1 C (3.0 F)
1985
-17.2 C (1.0 F)
1986
-13.9 C (7.0 F)
1987
-11.7 C (10.9 F)
1988
-11.1 C (12.0 F)
1989
-20.0 C (-4.0 F)
1990
-21.1 C (-6.0 F)
1991
-8.3 C (17.1 F)
1992
-14.4 C (6.1 F)
1993
-12.2 C (10.0 F)
1994
-15.6 C (3.9 F)
1995
-18.9 C (-2.0 F)
1996
-17.8 C (0.0 F)
1997
-19.4 C (-2.9 F)
1998
-27.2 C (-17.0 F)
1999
8.9 C (48.0 F)
2002
-4.4 C (24.1 F)
2003
-11.1 C (12.0 F)
2004
-19.4 C (-2.9 F)
2005
-15.0 C (5.0 F)
2006
-16.7 C (1.9 F)
2007
-14.4 C (6.1 F)
2008
-12.8 C (9.0 F)
2009
-16.7 C (1.9 F)
2010
-10.6 C (12.9 F)
2011
-15.6 C (3.9 F)
2012
-16.1 C (3.0 F)
2013
-15.6 C (3.9 F)
2014
-13.9 C (7.0 F)
2015
-15.0 C (5.0 F)
2016
-10.6 C (12.9 F)
2017
-12.8 C (9.0 F)
2018
-12.8 C (9.0 F)
2019
-13.9 C (7.0 F)
2020
-11.7 C (10.9 F)
2021
-16.7 C (1.9 F)
Wettest day (Rx1day)
The wettest day of the year at Juneau Dwtn, 1965 to 2021. The record is 127.0 mm (5.0 in) in 2006, marked on the chart; the median year is 62.1 mm (2.4 in).
Wettest day (Rx1day) at Juneau Dwtn by year
Year
Wettest day (Rx1day)
1965
75.7 mm (3.0 in)
1966
61.7 mm (2.4 in)
1967
53.3 mm (2.1 in)
1968
74.4 mm (2.9 in)
1969
83.8 mm (3.3 in)
1970
115.6 mm (4.6 in)
1971
63.5 mm (2.5 in)
1972
91.4 mm (3.6 in)
1973
38.1 mm (1.5 in)
1974
n/a
1975
26.7 mm (1.1 in)
1976
76.2 mm (3.0 in)
1977
65.3 mm (2.6 in)
1978
91.4 mm (3.6 in)
1979
81.3 mm (3.2 in)
1980
59.7 mm (2.4 in)
1981
73.4 mm (2.9 in)
1982
68.8 mm (2.7 in)
1983
56.4 mm (2.2 in)
1984
56.4 mm (2.2 in)
1985
75.4 mm (3.0 in)
1986
62.0 mm (2.4 in)
1987
55.1 mm (2.2 in)
1988
105.2 mm (4.1 in)
1989
56.9 mm (2.2 in)
1990
55.9 mm (2.2 in)
1991
57.7 mm (2.3 in)
1992
58.2 mm (2.3 in)
1993
98.6 mm (3.9 in)
1994
30.5 mm (1.2 in)
1995
18.3 mm (0.7 in)
1996
67.8 mm (2.7 in)
1997
82.6 mm (3.3 in)
1998
58.4 mm (2.3 in)
1999
26.7 mm (1.1 in)
2002
38.6 mm (1.5 in)
2003
62.2 mm (2.4 in)
2004
56.6 mm (2.2 in)
2005
94.2 mm (3.7 in)
2006
127.0 mm (5.0 in)
2007
50.8 mm (2.0 in)
2008
55.4 mm (2.2 in)
2009
105.7 mm (4.2 in)
2010
49.5 mm (1.9 in)
2011
79.0 mm (3.1 in)
2012
55.9 mm (2.2 in)
2013
57.2 mm (2.3 in)
2014
79.0 mm (3.1 in)
2015
65.3 mm (2.6 in)
2016
55.9 mm (2.2 in)
2017
85.1 mm (3.4 in)
2018
49.8 mm (2.0 in)
2019
49.8 mm (2.0 in)
2020
89.4 mm (3.5 in)
2021
63.2 mm (2.5 in)
Wettest five days (Rx5day)
The wettest five days of the year at Juneau Dwtn, 1965 to 2021. The record is 298.9 mm (11.8 in) in 2005, marked on the chart; the median year is 130.4 mm (5.1 in).
Wettest five days (Rx5day) at Juneau Dwtn by year
Year
Wettest five days (Rx5day)
1965
128.5 mm (5.1 in)
1966
163.3 mm (6.4 in)
1967
154.9 mm (6.1 in)
1968
172.2 mm (6.8 in)
1969
177.8 mm (7.0 in)
1970
214.9 mm (8.5 in)
1971
109.2 mm (4.3 in)
1972
129.5 mm (5.1 in)
1973
45.8 mm (1.8 in)
1974
n/a
1975
94.2 mm (3.7 in)
1976
140.6 mm (5.5 in)
1977
145.8 mm (5.7 in)
1978
174.3 mm (6.9 in)
1979
171.1 mm (6.7 in)
1980
149.6 mm (5.9 in)
1981
238.7 mm (9.4 in)
1982
127.6 mm (5.0 in)
1983
129.0 mm (5.1 in)
1984
138.5 mm (5.5 in)
1985
178.9 mm (7.0 in)
1986
157.7 mm (6.2 in)
1987
140.6 mm (5.5 in)
1988
177.3 mm (7.0 in)
1989
131.3 mm (5.2 in)
1990
148.9 mm (5.9 in)
1991
123.2 mm (4.9 in)
1992
124.5 mm (4.9 in)
1993
173.1 mm (6.8 in)
1994
50.5 mm (2.0 in)
1995
43.5 mm (1.7 in)
1996
198.5 mm (7.8 in)
1997
138.5 mm (5.5 in)
1998
93.5 mm (3.7 in)
1999
23.2 mm (0.9 in)
2002
77.5 mm (3.1 in)
2003
121.1 mm (4.8 in)
2004
157.2 mm (6.2 in)
2005
298.9 mm (11.8 in)
2006
202.7 mm (8.0 in)
2007
84.1 mm (3.3 in)
2008
174.6 mm (6.9 in)
2009
151.5 mm (6.0 in)
2010
93.0 mm (3.7 in)
2011
101.6 mm (4.0 in)
2012
16.5 mm (0.6 in)
2013
124.6 mm (4.9 in)
2014
99.9 mm (3.9 in)
2015
80.5 mm (3.2 in)
2016
33.5 mm (1.3 in)
2017
145.6 mm (5.7 in)
2018
22.7 mm (0.9 in)
2019
75.9 mm (3.0 in)
2020
62.0 mm (2.4 in)
2021
101.1 mm (4.0 in)
Longest dry spell (CDD)
The longest dry spell of the year at Juneau Dwtn, 1965 to 2021. The record is 21 days in 1989, marked on the chart; the median year is 11 days.
Longest dry spell (CDD) at Juneau Dwtn by year
Year
Longest dry spell (CDD)
1965
15 days
1966
20 days
1967
19 days
1968
15 days
1969
17 days
1970
8 days
1971
12 days
1972
19 days
1973
12 days
1974
n/a
1975
3 days
1976
10 days
1977
11 days
1978
13 days
1979
19 days
1980
13 days
1981
12 days
1982
16 days
1983
15 days
1984
10 days
1985
18 days
1986
14 days
1987
11 days
1988
11 days
1989
21 days
1990
12 days
1991
18 days
1992
14 days
1993
20 days
1994
3 days
1995
8 days
1996
11 days
1997
8 days
1998
15 days
1999
8 days
2002
4 days
2003
11 days
2004
7 days
2005
11 days
2006
12 days
2007
7 days
2008
6 days
2009
15 days
2010
5 days
2011
5 days
2012
5 days
2013
4 days
2014
5 days
2015
4 days
2016
7 days
2017
5 days
2018
4 days
2019
9 days
2020
4 days
2021
5 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.
Frost Dates and Growing Season
21 years with a frost
Across 21 years with a frost, the median last spring frost at Juneau Dwtn falls on 23 April and the median first autumn frost on 19 October, which leaves a median of 180 days between them.
Frost dates and growing season at Juneau Dwtn
Measure
Median, all years
Earliest period
Recent period (1967 to 2020)
Recent against earliest
Fitted trend
Last spring frost
23 April
n/a
23 April
n/a
n/a
First autumn frost
19 October
n/a
19 October
n/a
n/a
Growing days
180 days
n/a
180 days
n/a
n/a
A frost day is a day with a daily minimum at or below 0 C (32 F). The last spring frost and the first autumn frost are the last and first such days of the cold season, and growing days are the days between them. A negative trend for the last spring frost means it comes earlier.
Download the Data
Data for Juneau Dwtn standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Juneau Dwtn 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.