Record envelope, standing records and threshold days for Eklutna Project (USC00502730), Alaska, United States, with 47 years of record.
Key Facts for Eklutna Project
Eklutna Project (USC00502730) is a weather station in Alaska, United States at 61.47 latitude and -149.17 longitude, 12 m (38 ft) above sea level.
The station reports from 1952 to 1998, 47 years of record.
1,464 records set at Eklutna Project still stand.
Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
Eklutna Project set a daily record snow depth of 50.8 cm (20.0 in) on 22 December 1997.
About the Station
Location: Alaska, United States, 61.47 latitude, -149.17 longitude.
Elevation: 12 m (38 ft).
Period of record: 1952 to 1998, 47 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 Eklutna Project. 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 Eklutna Project, with 2026 drawn through them
Month
Highest record high
Lowest record low
2026 highest maximum
2026 lowest minimum
Jan
12.8 C (55.0 F)
-42.2 C (-44.0 F)
n/a
n/a
Feb
14.4 C (57.9 F)
-36.1 C (-33.0 F)
n/a
n/a
Mar
13.3 C (55.9 F)
-38.3 C (-36.9 F)
n/a
n/a
Apr
19.4 C (66.9 F)
-23.3 C (-9.9 F)
n/a
n/a
May
28.3 C (82.9 F)
-9.4 C (15.1 F)
n/a
n/a
Jun
33.3 C (91.9 F)
0.0 C (32.0 F)
n/a
n/a
Jul
30.6 C (87.1 F)
2.2 C (36.0 F)
n/a
n/a
Aug
28.9 C (84.0 F)
-2.2 C (28.0 F)
n/a
n/a
Sep
24.4 C (75.9 F)
-10.6 C (12.9 F)
n/a
n/a
Oct
20.6 C (69.1 F)
-26.7 C (-16.1 F)
n/a
n/a
Nov
13.3 C (55.9 F)
-33.3 C (-27.9 F)
n/a
n/a
Dec
13.3 C (55.9 F)
-40.6 C (-41.1 F)
n/a
n/a
Which Years Hold Standing Records
1,464 standing records
Year with most
1,464 records at Eklutna Project still stand. 1956 holds the most, with 63.
Standing records at Eklutna Project by the year they were set
Year set
Standing records
1952
41
1953
44
1954
37
1955
48
1956
63
1957
40
1958
47
1959
39
1960
30
1961
43
1962
36
1963
48
1964
41
1965
52
1966
31
1967
33
1968
25
1969
53
1970
40
1971
29
1972
56
1973
42
1974
29
1975
35
1976
12
1977
27
1978
18
1979
42
1980
55
1981
39
1982
23
1983
9
1984
13
1985
30
1986
35
1987
19
1988
8
1989
34
1990
22
1991
4
1992
30
1993
20
1994
9
1995
8
1996
13
1997
12
All-Time Record Progression
4 new records
4 all-time records were set at Eklutna Project between 25 March 1988 and 16 March 1995. Each dot is a new record.
When Eklutna Project set new all-time records
Date
Kind
Detail
1988-03-25
Record daily snowfall
Record daily snowfall 43.2 cm (17.0 in)
1992-02-29
Record daily snowfall
Record daily snowfall 53.3 cm (21.0 in)
1992-02-29
Record snow depth
Record snow depth 91.4 cm (36.0 in)
1995-03-16
Record snow depth
Record snow depth 111.8 cm (44.0 in)
Wettest Day of Each Month
Jan: 71.9 mm (2.8 in)
The wettest day on record for each calendar month at Eklutna Project. The most was 71.9 mm (2.8 in) on 21 January 1961.
Record daily precipitation for each month at Eklutna Project
Month
Record daily precipitation (mm)
Date
Jan
71.9 mm (2.8 in)
21 January 1961
Feb
35.6 mm (1.4 in)
29 February 1992
Mar
30.7 mm (1.2 in)
16 March 1995
Apr
23.4 mm (0.9 in)
27 April 1976
May
21.3 mm (0.8 in)
27 May 1969
Jun
24.4 mm (1.0 in)
21 June 1966
Jul
44.7 mm (1.8 in)
31 July 1956
Aug
41.1 mm (1.6 in)
26 August 1989
Sep
47.5 mm (1.9 in)
2 September 1997
Oct
33.5 mm (1.3 in)
27 October 1992
Nov
38.9 mm (1.5 in)
19 November 1964
Dec
44.7 mm (1.8 in)
31 December 1980
Period of Record Coverage
1952 to 1998
Complete yearUnder 90 percent of days
47 years of record at Eklutna Project, 1952 to 1998. 16 years have data for under 90 percent of days and are left out of rankings: 1975, 1976, 1977, 1984, 1985, 1988, 1989, 1990 and others.
Cooler than the station meanWarmer than the station mean
One stripe for each of 30 complete years at Eklutna Project, 1952 to 1988. Blue stripes are years cooler than the station's own mean of 1.0 C (33.8 F); red stripes are warmer. The coolest year was 1956, at -1.2 C (29.8 F), and the warmest was 1981, at 3.4 C (38.1 F). The strongest colour marks a difference of 2.5 C (4.5 F).
Annual mean temperature at Eklutna Project as warming stripes, 1952 to 1988
Year
Annual mean temperature
Difference from the station mean
1952
1.5 C
+0.49 C
1953
1.6 C
+0.59 C
1954
0.6 C
-0.40 C
1955
-0.2 C
-1.15 C
1956
-1.2 C
-2.18 C
1958
1.4 C
+0.42 C
1959
0.6 C
-0.36 C
1960
2.2 C
+1.18 C
1961
0.0 C
-1.00 C
1962
0.8 C
-0.15 C
1963
1.7 C
+0.68 C
1964
0.1 C
-0.88 C
1965
0.4 C
-0.63 C
1966
-0.4 C
-1.35 C
1967
0.9 C
-0.05 C
1968
0.7 C
-0.29 C
1969
2.0 C
+1.01 C
1970
1.4 C
+0.43 C
1971
-0.8 C
-1.74 C
1972
-0.9 C
-1.86 C
1973
-0.3 C
-1.33 C
1974
1.0 C
+0.01 C
1978
2.6 C
+1.60 C
1979
1.8 C
+0.77 C
1980
1.1 C
+0.08 C
1981
3.4 C
+2.41 C
1982
0.3 C
-0.65 C
1986
2.2 C
+1.26 C
1987
2.7 C
+1.68 C
1988
2.3 C
+1.32 C
The annual mean temperature here has risen by 0.4 C (0.1 to 0.8) per decade over 1952 to 1988. In Fahrenheit: 0.8 F (0.1 to 1.5) 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 Eklutna Project
Measure
Per decade (C)
Per decade (F)
Period
Complete years
Reading
Annual mean temperature
0.4 C (0.1 to 0.8) per decade
0.8 F (0.1 to 1.5) per decade
1952 to 1988
30
Rise
Mean daily maximum
0.5 C (0.1 to 0.9) per decade
0.9 F (0.2 to 1.6) per decade
1952 to 1988
30
Rise
Mean daily minimum
0.37 C (-0.04 to 0.78) per decade
0.7 F (-0.1 to 1.4) per decade
1952 to 1988
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
1952 to 1998
Yearly extremes at Eklutna Project: the record and the median year
Measure
Record
Year of the record
Median year
Years with a value
Hottest day (TXx)
33.3 C (91.9 F)
1953
27.8 C (82.0 F)
47
Coldest night (TNn)
-42.2 C (-44.0 F)
1975
-33.9 C (-29.0 F)
47
Wettest day (Rx1day)
71.9 mm (2.8 in)
1961
26.9 mm (1.1 in)
47
Wettest five days (Rx5day)
87.9 mm (3.5 in)
1961
46.0 mm (1.8 in)
47
Longest dry spell (CDD)
63 days
1957
32 days
47
Hottest day (TXx)
The hottest day of the year at Eklutna Project, 1952 to 1998. The record is 33.3 C (91.9 F) in 1953, marked on the chart; the median year is 27.8 C (82.0 F).
Hottest day (TXx) at Eklutna Project by year
Year
Hottest day (TXx)
1952
28.9 C (84.0 F)
1953
33.3 C (91.9 F)
1954
26.7 C (80.1 F)
1955
29.4 C (84.9 F)
1956
28.9 C (84.0 F)
1957
28.3 C (82.9 F)
1958
27.8 C (82.0 F)
1959
29.4 C (84.9 F)
1960
28.3 C (82.9 F)
1961
25.0 C (77.0 F)
1962
27.2 C (81.0 F)
1963
26.1 C (79.0 F)
1964
27.2 C (81.0 F)
1965
25.6 C (78.1 F)
1966
28.3 C (82.9 F)
1967
30.0 C (86.0 F)
1968
28.9 C (84.0 F)
1969
31.7 C (89.1 F)
1970
27.2 C (81.0 F)
1971
28.9 C (84.0 F)
1972
30.0 C (86.0 F)
1973
23.9 C (75.0 F)
1974
27.2 C (81.0 F)
1975
23.3 C (73.9 F)
1976
28.3 C (82.9 F)
1977
24.4 C (75.9 F)
1978
27.2 C (81.0 F)
1979
28.9 C (84.0 F)
1980
26.7 C (80.1 F)
1981
25.6 C (78.1 F)
1982
27.2 C (81.0 F)
1983
25.6 C (78.1 F)
1984
25.0 C (77.0 F)
1985
27.2 C (81.0 F)
1986
30.6 C (87.1 F)
1987
28.3 C (82.9 F)
1988
25.6 C (78.1 F)
1989
28.9 C (84.0 F)
1990
28.9 C (84.0 F)
1991
27.8 C (82.0 F)
1992
25.0 C (77.0 F)
1993
30.6 C (87.1 F)
1994
28.3 C (82.9 F)
1995
24.4 C (75.9 F)
1996
27.8 C (82.0 F)
1997
30.6 C (87.1 F)
1998
1.7 C (35.1 F)
Coldest night (TNn)
The coldest night of the year at Eklutna Project, 1952 to 1998. The record is -42.2 C (-44.0 F) in 1975, marked on the chart; the median year is -33.9 C (-29.0 F).
Coldest night (TNn) at Eklutna Project by year
Year
Coldest night (TNn)
1952
-37.8 C (-36.0 F)
1953
-30.6 C (-23.1 F)
1954
-38.3 C (-36.9 F)
1955
-35.6 C (-32.1 F)
1956
-38.3 C (-36.9 F)
1957
-35.0 C (-31.0 F)
1958
-31.7 C (-25.1 F)
1959
-32.2 C (-26.0 F)
1960
-36.7 C (-34.1 F)
1961
-40.6 C (-41.1 F)
1962
-33.9 C (-29.0 F)
1963
-35.6 C (-32.1 F)
1964
-37.2 C (-35.0 F)
1965
-32.2 C (-26.0 F)
1966
-36.1 C (-33.0 F)
1967
-33.3 C (-27.9 F)
1968
-35.0 C (-31.0 F)
1969
-34.4 C (-29.9 F)
1970
-31.7 C (-25.1 F)
1971
-37.8 C (-36.0 F)
1972
-40.0 C (-40.0 F)
1973
-37.8 C (-36.0 F)
1974
-32.2 C (-26.0 F)
1975
-42.2 C (-44.0 F)
1976
-31.1 C (-24.0 F)
1977
-32.2 C (-26.0 F)
1978
-27.8 C (-18.0 F)
1979
-35.6 C (-32.1 F)
1980
-37.8 C (-36.0 F)
1981
-31.7 C (-25.1 F)
1982
-31.1 C (-24.0 F)
1983
-32.8 C (-27.0 F)
1984
-33.9 C (-29.0 F)
1985
-30.0 C (-22.0 F)
1986
-28.9 C (-20.0 F)
1987
-29.4 C (-20.9 F)
1988
-31.1 C (-24.0 F)
1989
-38.9 C (-38.0 F)
1990
-33.9 C (-29.0 F)
1991
-30.6 C (-23.1 F)
1992
-35.6 C (-32.1 F)
1993
-36.1 C (-33.0 F)
1994
-30.0 C (-22.0 F)
1995
-28.9 C (-20.0 F)
1996
-32.2 C (-26.0 F)
1997
-34.4 C (-29.9 F)
1998
-23.9 C (-11.0 F)
Wettest day (Rx1day)
The wettest day of the year at Eklutna Project, 1952 to 1998. The record is 71.9 mm (2.8 in) in 1961, marked on the chart; the median year is 26.9 mm (1.1 in).
Wettest day (Rx1day) at Eklutna Project by year
Year
Wettest day (Rx1day)
1952
23.4 mm (0.9 in)
1953
36.8 mm (1.4 in)
1954
18.3 mm (0.7 in)
1955
27.2 mm (1.1 in)
1956
44.7 mm (1.8 in)
1957
23.9 mm (0.9 in)
1958
24.1 mm (0.9 in)
1959
30.2 mm (1.2 in)
1960
35.1 mm (1.4 in)
1961
71.9 mm (2.8 in)
1962
20.3 mm (0.8 in)
1963
35.8 mm (1.4 in)
1964
38.9 mm (1.5 in)
1965
38.9 mm (1.5 in)
1966
24.4 mm (1.0 in)
1967
33.3 mm (1.3 in)
1968
16.5 mm (0.6 in)
1969
26.9 mm (1.1 in)
1970
21.1 mm (0.8 in)
1971
29.7 mm (1.2 in)
1972
20.3 mm (0.8 in)
1973
26.7 mm (1.1 in)
1974
22.1 mm (0.9 in)
1975
27.2 mm (1.1 in)
1976
23.4 mm (0.9 in)
1977
11.9 mm (0.5 in)
1978
29.7 mm (1.2 in)
1979
33.5 mm (1.3 in)
1980
44.7 mm (1.8 in)
1981
36.1 mm (1.4 in)
1982
22.9 mm (0.9 in)
1983
14.0 mm (0.6 in)
1984
22.9 mm (0.9 in)
1985
27.4 mm (1.1 in)
1986
43.7 mm (1.7 in)
1987
20.8 mm (0.8 in)
1988
25.7 mm (1.0 in)
1989
41.1 mm (1.6 in)
1990
28.7 mm (1.1 in)
1991
20.6 mm (0.8 in)
1992
35.6 mm (1.4 in)
1993
20.8 mm (0.8 in)
1994
16.0 mm (0.6 in)
1995
39.4 mm (1.6 in)
1996
17.5 mm (0.7 in)
1997
47.5 mm (1.9 in)
1998
1.8 mm (0.07 in)
Wettest five days (Rx5day)
The wettest five days of the year at Eklutna Project, 1952 to 1998. The record is 87.9 mm (3.5 in) in 1961, marked on the chart; the median year is 46.0 mm (1.8 in).
Wettest five days (Rx5day) at Eklutna Project by year
Year
Wettest five days (Rx5day)
1952
45.5 mm (1.8 in)
1953
71.1 mm (2.8 in)
1954
53.0 mm (2.1 in)
1955
62.4 mm (2.5 in)
1956
58.4 mm (2.3 in)
1957
49.5 mm (1.9 in)
1958
39.3 mm (1.5 in)
1959
61.2 mm (2.4 in)
1960
56.1 mm (2.2 in)
1961
87.9 mm (3.5 in)
1962
38.4 mm (1.5 in)
1963
52.7 mm (2.1 in)
1964
64.6 mm (2.5 in)
1965
58.5 mm (2.3 in)
1966
37.9 mm (1.5 in)
1967
67.9 mm (2.7 in)
1968
34.5 mm (1.4 in)
1969
55.9 mm (2.2 in)
1970
33.1 mm (1.3 in)
1971
63.8 mm (2.5 in)
1972
50.1 mm (2.0 in)
1973
39.9 mm (1.6 in)
1974
27.4 mm (1.1 in)
1975
56.1 mm (2.2 in)
1976
38.9 mm (1.5 in)
1977
16.5 mm (0.6 in)
1978
46.0 mm (1.8 in)
1979
76.7 mm (3.0 in)
1980
65.5 mm (2.6 in)
1981
58.1 mm (2.3 in)
1982
40.4 mm (1.6 in)
1983
40.1 mm (1.6 in)
1984
28.9 mm (1.1 in)
1985
34.6 mm (1.4 in)
1986
49.7 mm (2.0 in)
1987
44.7 mm (1.8 in)
1988
33.5 mm (1.3 in)
1989
66.8 mm (2.6 in)
1990
70.8 mm (2.8 in)
1991
38.7 mm (1.5 in)
1992
38.7 mm (1.5 in)
1993
11.2 mm (0.4 in)
1994
20.8 mm (0.8 in)
1995
30.7 mm (1.2 in)
1996
28.7 mm (1.1 in)
1997
47.5 mm (1.9 in)
1998
1.8 mm (0.07 in)
Longest dry spell (CDD)
The longest dry spell of the year at Eklutna Project, 1952 to 1998. The record is 63 days in 1957, marked on the chart; the median year is 32 days.
Longest dry spell (CDD) at Eklutna Project by year
Year
Longest dry spell (CDD)
1952
27 days
1953
42 days
1954
49 days
1955
33 days
1956
33 days
1957
63 days
1958
46 days
1959
29 days
1960
22 days
1961
16 days
1962
38 days
1963
43 days
1964
27 days
1965
33 days
1966
25 days
1967
23 days
1968
24 days
1969
28 days
1970
26 days
1971
34 days
1972
39 days
1973
24 days
1974
20 days
1975
33 days
1976
25 days
1977
33 days
1978
46 days
1979
32 days
1980
20 days
1981
41 days
1982
33 days
1983
54 days
1984
29 days
1985
27 days
1986
33 days
1987
37 days
1988
19 days
1989
31 days
1990
25 days
1991
24 days
1992
34 days
1993
42 days
1994
26 days
1995
21 days
1996
38 days
1997
35 days
1998
26 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 Eklutna Project falls on 21 May and the median first autumn frost on 7 September, which leaves a median of 108 days between them.
Fitted over all years, the growing season changes by -5.4 days per decade at this station.
Frost dates and growing season at Eklutna Project
Measure
Median, all years
Earliest period
Recent period (1952 to 1988)
Recent against earliest
Fitted trend
Last spring frost
21 May
n/a
21 May
n/a
+4.1 days per decade
First autumn frost
7 September
n/a
7 September
n/a
-1.4 days per decade
Growing days
108 days
n/a
108 days
n/a
-5.4 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
31 years, 1952 to 1987
A day with at least 27.9 mm (1.1 in) of rain is expected about once in 2 years. A day with at least 69.3 mm (2.7 in) of rain is expected about once in 100 years.
Rainfall return levels at Eklutna Project: the daily rain expected about once in a given number of years
Expected about once in
A day with at least
Note
2 years
27.9 mm (1.1 in)
5 years
37.7 mm (1.5 in)
10 years
44.6 mm (1.8 in)
25 years
54.1 mm (2.1 in)
50 years
61.5 mm (2.4 in)
Longer than the 31 years of record
100 years
69.3 mm (2.7 in)
Longer than the 31 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, 31 years of values from 1952 to 1987.
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: 71.9 mm (2.8 in) in 1961; 44.7 mm (1.8 in) in 1956; 44.7 mm (1.8 in) in 1980.
Download the Data
Data for Eklutna Project standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Eklutna Project 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 2026-10-15 (15 October 2026). Records are computed by this site and are not official.