Record envelope, standing records and threshold days for Juneau Dwtn (USC00504092), Alaska, United States, with 76 years of record.
Key Facts for Juneau Dwtn
Juneau Dwtn (USC00504092) is a weather station in Alaska, United States at 58.30 latitude and -134.40 longitude, 52 m (171 ft) above sea level.
The station reports from 1890 to 1965, 76 years of record.
1,464 records set at Juneau Dwtn still stand.
Records are tracked for tmax, tmin, prcp, snow: an element needs 30 years of data to be eligible.
Juneau Dwtn set a daily record low minimum temperature of 5.6 C (42.1 F) on 25 June 1965.
About the Station
Location: Alaska, United States, 58.30 latitude, -134.40 longitude.
Elevation: 52 m (171 ft).
Period of record: 1890 to 1965, 76 years.
Eligible elements: tmax, tmin, prcp, snow.
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
15.6 C (60.1 F)
-26.1 C (-15.0 F)
n/a
n/a
Feb
11.1 C (52.0 F)
-26.1 C (-15.0 F)
n/a
n/a
Mar
16.1 C (61.0 F)
-20.6 C (-5.1 F)
n/a
n/a
Apr
22.2 C (72.0 F)
-11.1 C (12.0 F)
n/a
n/a
May
26.7 C (80.1 F)
-3.3 C (26.1 F)
n/a
n/a
Jun
30.6 C (87.1 F)
0.0 C (32.0 F)
n/a
n/a
Jul
31.7 C (89.1 F)
3.9 C (39.0 F)
n/a
n/a
Aug
30.6 C (87.1 F)
2.2 C (36.0 F)
n/a
n/a
Sep
29.4 C (84.9 F)
-1.7 C (28.9 F)
n/a
n/a
Oct
20.0 C (68.0 F)
-5.0 C (23.0 F)
n/a
n/a
Nov
15.6 C (60.1 F)
-20.0 C (-4.0 F)
n/a
n/a
Dec
15.0 C (59.0 F)
-22.8 C (-9.0 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. 1906 holds the most, with 83.
Standing records at Juneau Dwtn by the year they were set
Year set
Standing records
1890
25
1891
11
1895
37
1896
15
1898
4
1899
44
1900
29
1901
18
1902
36
1903
18
1904
35
1905
59
1906
83
1907
27
1908
30
1909
46
1910
24
1911
66
1912
29
1913
29
1914
38
1915
40
1916
43
1917
6
1943
22
1944
36
1945
28
1946
14
1947
37
1948
37
1949
40
1950
22
1951
18
1952
29
1953
18
1954
29
1955
39
1956
38
1957
29
1958
30
1959
17
1960
17
1961
21
1962
16
1963
61
1964
35
1965
39
Wettest Day of Each Month
Jan: 116.8 mm (4.6 in)
The wettest day on record for each calendar month at Juneau Dwtn. The most was 116.8 mm (4.6 in) on 10 January 1903.
Record daily precipitation for each month at Juneau Dwtn
Month
Record daily precipitation (mm)
Date
Jan
116.8 mm (4.6 in)
10 January 1903
Feb
99.1 mm (3.9 in)
22 February 1912
Mar
62.5 mm (2.5 in)
13 March 1962
Apr
65.5 mm (2.6 in)
27 April 1900
May
61.0 mm (2.4 in)
23 May 1903
Jun
50.0 mm (2.0 in)
29 June 1953
Jul
69.3 mm (2.7 in)
10 July 1961
Aug
85.9 mm (3.4 in)
12 August 1961
Sep
111.3 mm (4.4 in)
8 September 1960
Oct
112.5 mm (4.4 in)
22 October 1953
Nov
85.3 mm (3.4 in)
16 November 1961
Dec
108.0 mm (4.3 in)
28 December 1956
Period of Record Coverage
1890 to 1965
Complete yearUnder 90 percent of days
49 years of record at Juneau Dwtn, 1890 to 1965. 15 years have data for under 90 percent of days and are left out of rankings: 1890, 1891, 1894, 1895, 1896, 1897, 1898, 1903 and others.
Cooler than the station meanWarmer than the station mean
One stripe for each of 30 complete years at Juneau Dwtn, 1899 to 1964. Blue stripes are years cooler than the station's own mean of 5.9 C (42.6 F); red stripes are warmer. The coolest year was 1950, at 4.6 C (40.3 F), and the warmest was 1905, at 7.5 C (45.5 F). The strongest colour marks a difference of 1.7 C (3.1 F).
Annual mean temperature at Juneau Dwtn as warming stripes, 1899 to 1964
Year
Annual mean temperature
Difference from the station mean
1899
5.3 C
-0.56 C
1900
5.6 C
-0.29 C
1901
5.5 C
-0.35 C
1902
5.5 C
-0.33 C
1905
7.5 C
+1.62 C
1906
7.4 C
+1.55 C
1907
6.3 C
+0.42 C
1908
6.0 C
+0.09 C
1909
4.6 C
-1.23 C
1911
5.5 C
-0.33 C
1912
6.8 C
+0.96 C
1913
6.0 C
+0.08 C
1914
5.5 C
-0.41 C
1944
7.1 C
+1.25 C
1945
5.6 C
-0.26 C
1946
5.6 C
-0.25 C
1947
6.1 C
+0.18 C
1948
5.2 C
-0.69 C
1949
5.2 C
-0.70 C
1950
4.6 C
-1.28 C
1951
5.1 C
-0.80 C
1952
6.0 C
+0.12 C
1954
6.0 C
+0.14 C
1955
5.0 C
-0.90 C
1956
5.2 C
-0.63 C
1957
7.1 C
+1.22 C
1959
6.0 C
+0.16 C
1960
7.2 C
+1.30 C
1963
6.3 C
+0.46 C
1964
5.4 C
-0.49 C
The fitted trend in annual mean temperature here over 1899 to 1964 is -0.02 C (-0.15 to 0.11) per decade. The interval includes zero, so the trend is not clearly different from zero. In Fahrenheit: -0.04 F (-0.27 to 0.19) per decade. The slope is a straight line fitted to 30 complete years; the brackets give its 95 percent interval.
Fitted temperature trends per decade at Juneau Dwtn
Measure
Per decade (C)
Per decade (F)
Period
Complete years
Reading
Annual mean temperature
-0.02 C (-0.15 to 0.11) per decade
-0.04 F (-0.27 to 0.19) per decade
1899 to 1964
30
Not clearly different from zero
Mean daily maximum
-0.01 C (-0.17 to 0.16) per decade
-0.01 F (-0.31 to 0.29) per decade
1899 to 1964
30
Not clearly different from zero
Mean daily minimum
-0.04 C (-0.15 to 0.08) per decade
-0.1 F (-0.3 to 0.1) per decade
1899 to 1964
30
Not clearly different from zero
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
1890 to 1965
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)
31.7 C (89.1 F)
1915
26.7 C (80.1 F)
49
Coldest night (TNn)
-26.1 C (-15.0 F)
1916
-16.7 C (1.9 F)
49
Wettest day (Rx1day)
116.8 mm (4.6 in)
1903
64.8 mm (2.6 in)
49
Wettest five days (Rx5day)
258.6 mm (10.2 in)
1948
147.9 mm (5.8 in)
49
Longest dry spell (CDD)
25 days
1896
13 days
49
Hottest day (TXx)
The hottest day of the year at Juneau Dwtn, 1890 to 1965. The record is 31.7 C (89.1 F) in 1915, 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)
1890
20.0 C (68.0 F)
1891
21.7 C (71.1 F)
1894
5.0 C (41.0 F)
1895
29.4 C (84.9 F)
1896
22.8 C (73.0 F)
1897
8.3 C (46.9 F)
1898
12.2 C (54.0 F)
1899
30.0 C (86.0 F)
1900
25.0 C (77.0 F)
1901
26.1 C (79.0 F)
1902
26.7 C (80.1 F)
1903
26.7 C (80.1 F)
1904
23.3 C (73.9 F)
1905
28.9 C (84.0 F)
1906
27.2 C (81.0 F)
1907
26.1 C (79.0 F)
1908
30.0 C (86.0 F)
1909
26.7 C (80.1 F)
1910
20.6 C (69.1 F)
1911
25.6 C (78.1 F)
1912
29.4 C (84.9 F)
1913
30.6 C (87.1 F)
1914
27.8 C (82.0 F)
1915
31.7 C (89.1 F)
1916
30.6 C (87.1 F)
1917
7.2 C (45.0 F)
1943
26.7 C (80.1 F)
1944
27.2 C (81.0 F)
1945
24.4 C (75.9 F)
1946
28.3 C (82.9 F)
1947
27.2 C (81.0 F)
1948
27.2 C (81.0 F)
1949
25.0 C (77.0 F)
1950
27.8 C (82.0 F)
1951
28.9 C (84.0 F)
1952
26.7 C (80.1 F)
1953
28.3 C (82.9 F)
1954
27.8 C (82.0 F)
1955
27.2 C (81.0 F)
1956
30.0 C (86.0 F)
1957
30.6 C (87.1 F)
1958
28.9 C (84.0 F)
1959
26.7 C (80.1 F)
1960
25.6 C (78.1 F)
1961
26.7 C (80.1 F)
1962
26.1 C (79.0 F)
1963
28.9 C (84.0 F)
1964
28.9 C (84.0 F)
1965
23.9 C (75.0 F)
Coldest night (TNn)
The coldest night of the year at Juneau Dwtn, 1890 to 1965. The record is -26.1 C (-15.0 F) in 1916, marked on the chart; the median year is -16.7 C (1.9 F).
Coldest night (TNn) at Juneau Dwtn by year
Year
Coldest night (TNn)
1890
-20.0 C (-4.0 F)
1891
-15.0 C (5.0 F)
1894
-13.9 C (7.0 F)
1895
-16.1 C (3.0 F)
1896
-11.1 C (12.0 F)
1897
-11.1 C (12.0 F)
1898
-12.2 C (10.0 F)
1899
-15.6 C (3.9 F)
1900
-20.6 C (-5.1 F)
1901
-12.2 C (10.0 F)
1902
-16.1 C (3.0 F)
1903
-15.0 C (5.0 F)
1904
-16.7 C (1.9 F)
1905
-13.9 C (7.0 F)
1906
-23.9 C (-11.0 F)
1907
-16.7 C (1.9 F)
1908
-13.3 C (8.1 F)
1909
-20.0 C (-4.0 F)
1910
-13.3 C (8.1 F)
1911
-20.0 C (-4.0 F)
1912
-15.6 C (3.9 F)
1913
-16.1 C (3.0 F)
1914
-18.9 C (-2.0 F)
1915
-10.6 C (12.9 F)
1916
-26.1 C (-15.0 F)
1917
-26.1 C (-15.0 F)
1943
-1.1 C (30.0 F)
1944
-14.4 C (6.1 F)
1945
-15.0 C (5.0 F)
1946
-17.8 C (0.0 F)
1947
-23.3 C (-9.9 F)
1948
-19.4 C (-2.9 F)
1949
-18.3 C (-0.9 F)
1950
-17.8 C (0.0 F)
1951
-18.3 C (-0.9 F)
1952
-22.8 C (-9.0 F)
1953
-21.1 C (-6.0 F)
1954
-20.0 C (-4.0 F)
1955
-18.9 C (-2.0 F)
1956
-18.9 C (-2.0 F)
1957
-15.6 C (3.9 F)
1958
-12.2 C (10.0 F)
1959
-20.0 C (-4.0 F)
1960
-15.6 C (3.9 F)
1961
-16.7 C (1.9 F)
1962
-16.1 C (3.0 F)
1963
-16.7 C (1.9 F)
1964
-22.8 C (-9.0 F)
1965
-22.2 C (-8.0 F)
Wettest day (Rx1day)
The wettest day of the year at Juneau Dwtn, 1890 to 1965. The record is 116.8 mm (4.6 in) in 1903, marked on the chart; the median year is 64.8 mm (2.6 in).
Wettest day (Rx1day) at Juneau Dwtn by year
Year
Wettest day (Rx1day)
1890
56.1 mm (2.2 in)
1891
63.5 mm (2.5 in)
1894
46.5 mm (1.8 in)
1895
44.5 mm (1.8 in)
1896
60.2 mm (2.4 in)
1897
27.7 mm (1.1 in)
1898
25.4 mm (1.0 in)
1899
61.2 mm (2.4 in)
1900
75.4 mm (3.0 in)
1901
87.6 mm (3.4 in)
1902
101.6 mm (4.0 in)
1903
116.8 mm (4.6 in)
1904
41.9 mm (1.6 in)
1905
88.9 mm (3.5 in)
1906
67.3 mm (2.6 in)
1907
76.2 mm (3.0 in)
1908
50.8 mm (2.0 in)
1909
36.1 mm (1.4 in)
1910
24.1 mm (0.9 in)
1911
62.2 mm (2.4 in)
1912
99.1 mm (3.9 in)
1913
88.9 mm (3.5 in)
1914
61.0 mm (2.4 in)
1915
46.2 mm (1.8 in)
1916
45.2 mm (1.8 in)
1917
38.9 mm (1.5 in)
1943
82.0 mm (3.2 in)
1944
68.6 mm (2.7 in)
1945
83.8 mm (3.3 in)
1946
61.0 mm (2.4 in)
1947
56.4 mm (2.2 in)
1948
86.6 mm (3.4 in)
1949
69.1 mm (2.7 in)
1950
43.7 mm (1.7 in)
1951
60.5 mm (2.4 in)
1952
68.8 mm (2.7 in)
1953
112.5 mm (4.4 in)
1954
63.0 mm (2.5 in)
1955
64.8 mm (2.6 in)
1956
108.0 mm (4.3 in)
1957
63.8 mm (2.5 in)
1958
56.9 mm (2.2 in)
1959
66.0 mm (2.6 in)
1960
111.3 mm (4.4 in)
1961
85.9 mm (3.4 in)
1962
66.0 mm (2.6 in)
1963
81.3 mm (3.2 in)
1964
80.0 mm (3.1 in)
1965
96.5 mm (3.8 in)
Wettest five days (Rx5day)
The wettest five days of the year at Juneau Dwtn, 1890 to 1965. The record is 258.6 mm (10.2 in) in 1948, marked on the chart; the median year is 147.9 mm (5.8 in).
Wettest five days (Rx5day) at Juneau Dwtn by year
Year
Wettest five days (Rx5day)
1890
105.4 mm (4.1 in)
1891
171.6 mm (6.8 in)
1894
85.4 mm (3.4 in)
1895
76.0 mm (3.0 in)
1896
205.4 mm (8.1 in)
1897
57.2 mm (2.3 in)
1898
82.3 mm (3.2 in)
1899
129.5 mm (5.1 in)
1900
193.8 mm (7.6 in)
1901
162.6 mm (6.4 in)
1902
176.2 mm (6.9 in)
1903
191.7 mm (7.5 in)
1904
96.5 mm (3.8 in)
1905
201.9 mm (7.9 in)
1906
212.4 mm (8.4 in)
1907
185.3 mm (7.3 in)
1908
129.6 mm (5.1 in)
1909
121.9 mm (4.8 in)
1910
92.7 mm (3.6 in)
1911
140.2 mm (5.5 in)
1912
173.8 mm (6.8 in)
1913
176.5 mm (6.9 in)
1914
125.2 mm (4.9 in)
1915
124.0 mm (4.9 in)
1916
109.3 mm (4.3 in)
1917
87.7 mm (3.5 in)
1943
204.4 mm (8.0 in)
1944
129.6 mm (5.1 in)
1945
136.3 mm (5.4 in)
1946
138.0 mm (5.4 in)
1947
126.7 mm (5.0 in)
1948
258.6 mm (10.2 in)
1949
169.3 mm (6.7 in)
1950
148.3 mm (5.8 in)
1951
98.9 mm (3.9 in)
1952
147.9 mm (5.8 in)
1953
252.7 mm (9.9 in)
1954
170.2 mm (6.7 in)
1955
128.5 mm (5.1 in)
1956
209.0 mm (8.2 in)
1957
166.1 mm (6.5 in)
1958
160.1 mm (6.3 in)
1959
123.0 mm (4.8 in)
1960
143.8 mm (5.7 in)
1961
249.0 mm (9.8 in)
1962
146.7 mm (5.8 in)
1963
204.2 mm (8.0 in)
1964
181.8 mm (7.2 in)
1965
177.8 mm (7.0 in)
Longest dry spell (CDD)
The longest dry spell of the year at Juneau Dwtn, 1890 to 1965. The record is 25 days in 1896, marked on the chart; the median year is 13 days.
Longest dry spell (CDD) at Juneau Dwtn by year
Year
Longest dry spell (CDD)
1890
13 days
1891
15 days
1894
17 days
1895
7 days
1896
25 days
1897
7 days
1898
6 days
1899
12 days
1900
17 days
1901
11 days
1902
12 days
1903
16 days
1904
9 days
1905
20 days
1906
24 days
1907
19 days
1908
13 days
1909
17 days
1910
22 days
1911
14 days
1912
20 days
1913
8 days
1914
2 days
1915
2 days
1916
8 days
1917
11 days
1943
9 days
1944
11 days
1945
11 days
1946
18 days
1947
8 days
1948
15 days
1949
14 days
1950
18 days
1951
15 days
1952
13 days
1953
12 days
1954
16 days
1955
18 days
1956
10 days
1957
23 days
1958
18 days
1959
13 days
1960
16 days
1961
19 days
1962
12 days
1963
13 days
1964
14 days
1965
9 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
30 years with a frost
Across 30 years with a frost, the median last spring frost at Juneau Dwtn falls on 1 May and the median first autumn frost on 19 October, which leaves a median of 173 days between them.
Fitted over all years, the growing season changes by -1.5 days per decade at this station.
Frost dates and growing season at Juneau Dwtn
Measure
Median, all years
Earliest period
Recent period (1899 to 1964)
Recent against earliest
Fitted trend
Last spring frost
1 May
n/a
1 May
n/a
+1.5 days per decade
First autumn frost
19 October
n/a
19 October
n/a
0.0 days per decade
Growing days
173 days
n/a
173 days
n/a
-1.5 days per decade
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.
Rainfall Return Levels
32 years, 1899 to 1964
A day with at least 70.4 mm (2.8 in) of rain is expected about once in 2 years. A day with at least 125.0 mm (4.9 in) of rain is expected about once in 100 years.
Rainfall return levels at Juneau Dwtn: the daily rain expected about once in a given number of years
Expected about once in
A day with at least
Note
2 years
70.4 mm (2.8 in)
5 years
88.9 mm (3.5 in)
10 years
99.4 mm (3.9 in)
25 years
110.9 mm (4.4 in)
50 years
118.4 mm (4.7 in)
Longer than the 32 years of record
100 years
125.0 mm (4.9 in)
Longer than the 32 years of record
The levels come from a generalised extreme value (GEV) distribution fitted by L-moments to the wettest-day total of each year, 32 years of values from 1899 to 1964.
A return level is an estimate. It is least reliable for the long periods, 50 and 100 years, and for any period longer than the record behind the fit, where the fit has to reach past the largest day actually observed. It is not a forecast.
The largest wettest-day totals in the fit: 112.5 mm (4.4 in) in 1953; 111.3 mm (4.4 in) in 1960; 108.0 mm (4.3 in) in 1956.
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.