Record highRecord low2026 daily maximum2026 daily minimum
The band shows the record high and record low for each calendar day at Eureka. 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 Eureka, with 2026 drawn through them
Month
Highest record high
Lowest record low
2026 highest maximum
2026 lowest minimum
Jan
-1.1 C (30.0 F)
-53.3 C (-63.9 F)
n/a
n/a
Feb
-1.1 C (30.0 F)
-55.3 C (-67.5 F)
n/a
n/a
Mar
-13.3 C (8.1 F)
-52.8 C (-63.0 F)
n/a
n/a
Apr
-2.8 C (27.0 F)
-48.9 C (-56.0 F)
n/a
n/a
May
5.6 C (42.1 F)
-31.1 C (-24.0 F)
n/a
n/a
Jun
17.8 C (64.0 F)
-13.9 C (7.0 F)
n/a
n/a
Jul
19.4 C (66.9 F)
-2.2 C (28.0 F)
n/a
n/a
Aug
16.7 C (62.1 F)
-9.5 C (14.9 F)
n/a
n/a
Sep
6.1 C (43.0 F)
-31.7 C (-25.1 F)
n/a
n/a
Oct
1.7 C (35.1 F)
-41.7 C (-43.1 F)
n/a
n/a
Nov
-1.7 C (28.9 F)
-46.5 C (-51.7 F)
n/a
n/a
Dec
-2.1 C (28.2 F)
-51.7 C (-61.1 F)
n/a
n/a
Which Years Hold Standing Records
1,464 standing records
Year with most
1,464 records at Eureka still stand. 1979 holds the most, with 95.
Standing records at Eureka by the year they were set
Year set
Standing records
1947
14
1948
56
1949
28
1950
27
1951
20
1952
46
1953
61
1954
36
1955
33
1956
31
1957
33
1958
49
1959
40
1960
47
1961
70
1962
32
1963
31
1964
52
1965
26
1966
29
1967
39
1968
29
1969
17
1970
48
1971
42
1972
44
1973
38
1974
43
1975
28
1976
60
1977
49
1978
58
1979
95
1980
33
1981
26
1982
20
1983
34
All-Time Record Progression
6 new records
6 all-time records were set at Eureka between 6 February 1979 and 23 December 1983. Each dot is a new record.
When Eureka set new all-time records
Date
Kind
Detail
1979-02-06
Record low maximum temperature
Record low maximum temperature -50.2 C (-58.4 F)
1979-02-09
Record low maximum temperature
Record low maximum temperature -50.6 C (-59.1 F)
1979-02-10
Record low maximum temperature
Record low maximum temperature -52.1 C (-61.8 F)
1979-02-14
Record low minimum temperature
Record low minimum temperature -54.3 C (-65.7 F)
1979-02-15
Record low minimum temperature
Record low minimum temperature -55.3 C (-67.5 F)
1983-12-23
Record daily snowfall
Record daily snowfall 15.2 cm (6.0 in)
Wettest Day of Each Month
Aug: 41.7 mm (1.6 in)
The wettest day on record for each calendar month at Eureka. The most was 41.7 mm (1.6 in) on 17 August 1953.
Record daily precipitation for each month at Eureka
Month
Record daily precipitation (mm)
Date
Jan
4.3 mm (0.17 in)
10 January 1977
Feb
4.6 mm (0.18 in)
10 February 1963
Mar
5.1 mm (0.20 in)
5 March 1952
Apr
4.4 mm (0.17 in)
30 April 1978
May
7.4 mm (0.29 in)
10 May 1966
Jun
14.5 mm (0.6 in)
15 June 1951
Jul
19.1 mm (0.8 in)
13 July 1961
Aug
41.7 mm (1.6 in)
17 August 1953
Sep
13.7 mm (0.5 in)
2 September 1957
Oct
13.5 mm (0.5 in)
15 October 1955
Nov
6.7 mm (0.26 in)
29 November 1979
Dec
6.2 mm (0.24 in)
23 December 1983
Period of Record Coverage
1947 to 1983
Complete yearUnder 90 percent of days
37 years of record at Eureka, 1947 to 1983. 1 years have data for under 90 percent of days and are left out of rankings: 1947.
Cooler than the station meanWarmer than the station mean
One stripe for each of 35 complete years at Eureka, 1948 to 1983. Blue stripes are years cooler than the station's own mean of -19.6 C (-3.4 F); red stripes are warmer. The coolest year was 1972, at -21.8 C (-7.2 F), and the warmest was 1981, at -17.6 C (0.4 F). The strongest colour marks a difference of 2.2 C (4.0 F).
Annual mean temperature at Eureka as warming stripes, 1948 to 1983
Year
Annual mean temperature
Difference from the station mean
1948
-19.9 C
-0.29 C
1949
-19.6 C
+0.02 C
1951
-19.4 C
+0.21 C
1952
-18.4 C
+1.25 C
1953
-19.4 C
+0.23 C
1954
-18.5 C
+1.15 C
1955
-19.2 C
+0.41 C
1956
-20.2 C
-0.55 C
1957
-20.1 C
-0.50 C
1958
-18.1 C
+1.58 C
1959
-19.6 C
+0.08 C
1960
-18.0 C
+1.59 C
1961
-20.4 C
-0.74 C
1962
-18.3 C
+1.33 C
1963
-19.2 C
+0.39 C
1964
-20.1 C
-0.45 C
1965
-18.6 C
+1.00 C
1966
-20.2 C
-0.54 C
1967
-18.9 C
+0.74 C
1968
-19.8 C
-0.18 C
1969
-19.5 C
+0.14 C
1970
-20.1 C
-0.50 C
1971
-19.9 C
-0.29 C
1972
-21.8 C
-2.12 C
1973
-20.0 C
-0.34 C
1974
-21.2 C
-1.60 C
1975
-20.5 C
-0.88 C
1976
-20.6 C
-0.98 C
1977
-19.8 C
-0.17 C
1978
-19.3 C
+0.34 C
1979
-21.5 C
-1.84 C
1980
-19.8 C
-0.21 C
1981
-17.6 C
+2.08 C
1982
-20.4 C
-0.76 C
1983
-19.2 C
+0.40 C
The fitted trend in annual mean temperature here over 1948 to 1983 is -0.27 C (-0.59 to 0.04) per decade. The interval includes zero, so the trend is not clearly different from zero. In Fahrenheit: -0.5 F (-1.1 to 0.1) per decade. The slope is a straight line fitted to 35 complete years; the brackets give its 95 percent interval.
Fitted temperature trends per decade at Eureka
Measure
Per decade (C)
Per decade (F)
Period
Complete years
Reading
Annual mean temperature
-0.27 C (-0.59 to 0.04) per decade
-0.5 F (-1.1 to 0.1) per decade
1948 to 1983
35
Not clearly different from zero
Mean daily maximum
-0.3 C (-0.6 to 0.1) per decade
-0.5 F (-1.1 to 0.1) per decade
1948 to 1983
35
Not clearly different from zero
Mean daily minimum
-0.28 C (-0.58 to 0.01) per decade
-0.51 F (-1.05 to 0.02) per decade
1948 to 1983
35
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
1947 to 1983
Yearly extremes at Eureka: the record and the median year
Measure
Record
Year of the record
Median year
Years with a value
Hottest day (TXx)
19.4 C (66.9 F)
1950
15.6 C (60.1 F)
37
Coldest night (TNn)
-55.3 C (-67.5 F)
1979
-50.6 C (-59.1 F)
37
Wettest day (Rx1day)
41.7 mm (1.6 in)
1953
6.7 mm (0.26 in)
37
Wettest five days (Rx5day)
50.1 mm (2.0 in)
1953
10.6 mm (0.4 in)
37
Longest dry spell (CDD)
200 days
1957
83 days
37
Hottest day (TXx)
The hottest day of the year at Eureka, 1947 to 1983. The record is 19.4 C (66.9 F) in 1950, marked on the chart; the median year is 15.6 C (60.1 F).
Hottest day (TXx) at Eureka by year
Year
Hottest day (TXx)
1947
13.9 C (57.0 F)
1948
18.9 C (66.0 F)
1949
15.0 C (59.0 F)
1950
19.4 C (66.9 F)
1951
15.6 C (60.1 F)
1952
16.7 C (62.1 F)
1953
12.8 C (55.0 F)
1954
16.1 C (61.0 F)
1955
13.3 C (55.9 F)
1956
14.4 C (57.9 F)
1957
17.8 C (64.0 F)
1958
18.9 C (66.0 F)
1959
16.7 C (62.1 F)
1960
17.2 C (63.0 F)
1961
15.6 C (60.1 F)
1962
18.3 C (64.9 F)
1963
15.0 C (59.0 F)
1964
12.2 C (54.0 F)
1965
16.7 C (62.1 F)
1966
14.4 C (57.9 F)
1967
14.4 C (57.9 F)
1968
18.3 C (64.9 F)
1969
13.3 C (55.9 F)
1970
13.3 C (55.9 F)
1971
17.2 C (63.0 F)
1972
11.7 C (53.1 F)
1973
11.1 C (52.0 F)
1974
12.8 C (55.0 F)
1975
16.1 C (61.0 F)
1976
18.9 C (66.0 F)
1977
17.5 C (63.5 F)
1978
17.3 C (63.1 F)
1979
14.5 C (58.1 F)
1980
14.7 C (58.5 F)
1981
17.2 C (63.0 F)
1982
14.2 C (57.6 F)
1983
13.6 C (56.5 F)
Coldest night (TNn)
The coldest night of the year at Eureka, 1947 to 1983. The record is -55.3 C (-67.5 F) in 1979, marked on the chart; the median year is -50.6 C (-59.1 F).
Coldest night (TNn) at Eureka by year
Year
Coldest night (TNn)
1947
-46.7 C (-52.1 F)
1948
-52.8 C (-63.0 F)
1949
-48.3 C (-54.9 F)
1950
-50.6 C (-59.1 F)
1951
-50.0 C (-58.0 F)
1952
-51.2 C (-60.2 F)
1953
-50.6 C (-59.1 F)
1954
-47.8 C (-54.0 F)
1955
-48.9 C (-56.0 F)
1956
-52.2 C (-62.0 F)
1957
-49.4 C (-56.9 F)
1958
-52.2 C (-62.0 F)
1959
-48.9 C (-56.0 F)
1960
-51.2 C (-60.2 F)
1961
-51.2 C (-60.2 F)
1962
-46.7 C (-52.1 F)
1963
-48.9 C (-56.0 F)
1964
-51.2 C (-60.2 F)
1965
-47.2 C (-53.0 F)
1966
-53.3 C (-63.9 F)
1967
-51.7 C (-61.1 F)
1968
-51.2 C (-60.2 F)
1969
-48.3 C (-54.9 F)
1970
-50.6 C (-59.1 F)
1971
-48.9 C (-56.0 F)
1972
-53.9 C (-65.0 F)
1973
-52.8 C (-63.0 F)
1974
-50.6 C (-59.1 F)
1975
-51.7 C (-61.1 F)
1976
-48.9 C (-56.0 F)
1977
-50.8 C (-59.4 F)
1978
-47.2 C (-53.0 F)
1979
-55.3 C (-67.5 F)
1980
-49.8 C (-57.6 F)
1981
-46.3 C (-51.3 F)
1982
-50.0 C (-58.0 F)
1983
-50.2 C (-58.4 F)
Wettest day (Rx1day)
The wettest day of the year at Eureka, 1947 to 1983. The record is 41.7 mm (1.6 in) in 1953, marked on the chart; the median year is 6.7 mm (0.26 in).
Wettest day (Rx1day) at Eureka by year
Year
Wettest day (Rx1day)
1947
6.1 mm (0.24 in)
1948
4.6 mm (0.18 in)
1949
7.6 mm (0.30 in)
1950
8.9 mm (0.35 in)
1951
14.5 mm (0.6 in)
1952
5.8 mm (0.23 in)
1953
41.7 mm (1.6 in)
1954
14.5 mm (0.6 in)
1955
13.5 mm (0.5 in)
1956
3.6 mm (0.14 in)
1957
13.7 mm (0.5 in)
1958
7.1 mm (0.28 in)
1959
3.8 mm (0.15 in)
1960
5.6 mm (0.22 in)
1961
19.1 mm (0.8 in)
1962
9.1 mm (0.36 in)
1963
4.6 mm (0.18 in)
1964
5.3 mm (0.21 in)
1965
4.6 mm (0.18 in)
1966
11.4 mm (0.4 in)
1967
6.9 mm (0.27 in)
1968
2.5 mm (0.10 in)
1969
7.1 mm (0.28 in)
1970
4.1 mm (0.16 in)
1971
13.2 mm (0.5 in)
1972
5.3 mm (0.21 in)
1973
7.4 mm (0.29 in)
1974
6.6 mm (0.26 in)
1975
10.9 mm (0.4 in)
1976
8.9 mm (0.35 in)
1977
5.4 mm (0.21 in)
1978
10.0 mm (0.4 in)
1979
6.7 mm (0.26 in)
1980
6.6 mm (0.26 in)
1981
6.5 mm (0.26 in)
1982
5.8 mm (0.23 in)
1983
6.2 mm (0.24 in)
Wettest five days (Rx5day)
The wettest five days of the year at Eureka, 1947 to 1983. The record is 50.1 mm (2.0 in) in 1953, marked on the chart; the median year is 10.6 mm (0.4 in).
Wettest five days (Rx5day) at Eureka by year
Year
Wettest five days (Rx5day)
1947
10.6 mm (0.4 in)
1948
6.6 mm (0.26 in)
1949
7.6 mm (0.30 in)
1950
9.9 mm (0.39 in)
1951
19.1 mm (0.8 in)
1952
7.6 mm (0.30 in)
1953
50.1 mm (2.0 in)
1954
30.3 mm (1.2 in)
1955
19.3 mm (0.8 in)
1956
7.1 mm (0.28 in)
1957
17.6 mm (0.7 in)
1958
11.9 mm (0.5 in)
1959
7.6 mm (0.30 in)
1960
12.2 mm (0.5 in)
1961
26.7 mm (1.1 in)
1962
12.5 mm (0.5 in)
1963
4.6 mm (0.18 in)
1964
8.2 mm (0.32 in)
1965
5.8 mm (0.23 in)
1966
15.3 mm (0.6 in)
1967
10.2 mm (0.4 in)
1968
3.8 mm (0.15 in)
1969
8.6 mm (0.34 in)
1970
6.1 mm (0.24 in)
1971
17.0 mm (0.7 in)
1972
8.9 mm (0.35 in)
1973
11.9 mm (0.5 in)
1974
7.9 mm (0.31 in)
1975
13.9 mm (0.5 in)
1976
12.5 mm (0.5 in)
1977
13.1 mm (0.5 in)
1978
15.4 mm (0.6 in)
1979
12.1 mm (0.5 in)
1980
9.2 mm (0.36 in)
1981
10.5 mm (0.4 in)
1982
9.0 mm (0.35 in)
1983
16.5 mm (0.6 in)
Longest dry spell (CDD)
The longest dry spell of the year at Eureka, 1947 to 1983. The record is 200 days in 1957, marked on the chart; the median year is 83 days.
Longest dry spell (CDD) at Eureka by year
Year
Longest dry spell (CDD)
1947
9 days
1948
67 days
1949
109 days
1950
191 days
1951
162 days
1952
87 days
1953
57 days
1954
69 days
1955
170 days
1956
83 days
1957
200 days
1958
101 days
1959
130 days
1960
125 days
1961
81 days
1962
64 days
1963
55 days
1964
67 days
1965
108 days
1966
129 days
1967
162 days
1968
58 days
1969
67 days
1970
64 days
1971
84 days
1972
88 days
1973
67 days
1974
94 days
1975
114 days
1976
71 days
1977
86 days
1978
81 days
1979
62 days
1980
83 days
1981
53 days
1982
66 days
1983
78 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
35 years with a frost
Across 35 years with a frost, the median last spring frost at Eureka falls on 23 June and the median first autumn frost on 23 July, which leaves a median of 37 days between them.
Fitted over all years, the growing season changes by -0.3 days per decade at this station.
Frost dates and growing season at Eureka
Measure
Median, all years
Earliest period
Recent period (1954 to 1983)
Recent against earliest
Fitted trend
Last spring frost
23 June
n/a
22 June
n/a
0.0 days per decade
First autumn frost
23 July
n/a
24 July
n/a
-0.4 days per decade
Growing days
37 days
n/a
36 days
n/a
-0.3 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
36 years, 1948 to 1983
A day with at least 6.9 mm (0.27 in) of rain is expected about once in 2 years. A day with at least 37.3 mm (1.5 in) of rain is expected about once in 100 years.
Rainfall return levels at Eureka: the daily rain expected about once in a given number of years
Expected about once in
A day with at least
Note
2 years
6.9 mm (0.27 in)
5 years
11.0 mm (0.4 in)
10 years
14.9 mm (0.6 in)
25 years
21.7 mm (0.9 in)
50 years
28.5 mm (1.1 in)
Longer than the 36 years of record
100 years
37.3 mm (1.5 in)
Longer than the 36 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, 36 years of values from 1948 to 1983.
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: 41.7 mm (1.6 in) in 1953; 19.1 mm (0.8 in) in 1961; 14.5 mm (0.6 in) in 1951.
Download the Data
Data for Eureka standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Eureka 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.