Record highRecord low2026 daily maximum2026 daily minimum
The band shows the record high and record low for each calendar day at Marielund. 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 Marielund, with 2026 drawn through them
Month
Highest record high
Lowest record low
2026 highest maximum
2026 lowest minimum
Jan
11.0 C (51.8 F)
-32.0 C (-25.6 F)
n/a
n/a
Feb
13.0 C (55.4 F)
-21.6 C (-6.9 F)
n/a
n/a
Mar
19.0 C (66.2 F)
-22.5 C (-8.5 F)
n/a
n/a
Apr
23.0 C (73.4 F)
-11.0 C (12.2 F)
n/a
n/a
May
27.0 C (80.6 F)
-4.5 C (23.9 F)
n/a
n/a
Jun
32.0 C (89.6 F)
0.0 C (32.0 F)
n/a
n/a
Jul
32.5 C (90.5 F)
4.0 C (39.2 F)
n/a
n/a
Aug
34.0 C (93.2 F)
3.0 C (37.4 F)
n/a
n/a
Sep
28.0 C (82.4 F)
-2.9 C (26.8 F)
n/a
n/a
Oct
21.5 C (70.7 F)
-7.8 C (18.0 F)
n/a
n/a
Nov
15.3 C (59.5 F)
-16.9 C (1.6 F)
n/a
n/a
Dec
10.2 C (50.4 F)
-19.8 C (-3.6 F)
n/a
n/a
Which Years Hold Standing Records
1,464 standing records
Year with most
1,464 records at Marielund still stand. 1942 holds the most, with 86.
Standing records at Marielund by the year they were set
Year set
Standing records
1941
83
1942
86
1943
44
1944
44
1945
36
1946
37
1947
67
1948
43
1949
60
1950
28
1951
4
1958
34
1959
65
1960
37
1961
39
1962
50
1963
39
1964
40
1965
66
1966
49
1967
32
1968
50
1969
40
1970
42
1971
80
1972
29
1973
53
1974
36
1975
69
1976
45
1977
34
1978
3
Wettest Day of Each Month
Aug: 54.0 mm (2.1 in)
The wettest day on record for each calendar month at Marielund. The most was 54.0 mm (2.1 in) on 11 August 1945.
Record daily precipitation for each month at Marielund
Month
Record daily precipitation (mm)
Date
Jan
40.2 mm (1.6 in)
10 January 1968
Feb
28.8 mm (1.1 in)
23 February 1946
Mar
22.2 mm (0.9 in)
22 March 1946
Apr
25.5 mm (1.0 in)
23 April 1963
May
24.6 mm (1.0 in)
29 May 1948
Jun
26.3 mm (1.0 in)
26 June 1963
Jul
36.4 mm (1.4 in)
15 July 1970
Aug
54.0 mm (2.1 in)
11 August 1945
Sep
25.5 mm (1.0 in)
5 September 1961
Oct
29.5 mm (1.2 in)
5 October 1974
Nov
39.5 mm (1.6 in)
9 November 1945
Dec
28.5 mm (1.1 in)
9 December 1965
Period of Record Coverage
1941 to 1978
Complete yearUnder 90 percent of days
32 years of record at Marielund, 1941 to 1978. 2 years have data for under 90 percent of days and are left out of rankings: 1951, 1978.
Cooler than the station meanWarmer than the station mean
One stripe for each of 30 complete years at Marielund, 1941 to 1977. Blue stripes are years cooler than the station's own mean of 7.1 C (44.9 F); red stripes are warmer. The coolest year was 1942, at 5.4 C (41.7 F), and the warmest was 1975, at 8.7 C (47.6 F). The strongest colour marks a difference of 1.8 C (3.2 F).
Annual mean temperature at Marielund as warming stripes, 1941 to 1977
Year
Annual mean temperature
Difference from the station mean
1941
6.0 C
-1.11 C
1942
5.4 C
-1.75 C
1943
8.1 C
+1.00 C
1944
7.6 C
+0.43 C
1945
7.6 C
+0.49 C
1946
6.9 C
-0.26 C
1947
6.4 C
-0.76 C
1948
7.4 C
+0.23 C
1949
8.3 C
+1.13 C
1950
7.2 C
+0.01 C
1958
6.6 C
-0.52 C
1959
8.6 C
+1.45 C
1960
7.3 C
+0.16 C
1961
8.1 C
+0.91 C
1962
6.1 C
-1.00 C
1963
6.1 C
-1.02 C
1964
6.7 C
-0.45 C
1965
6.1 C
-1.00 C
1966
6.6 C
-0.59 C
1967
7.5 C
+0.40 C
1968
7.4 C
+0.25 C
1969
6.9 C
-0.26 C
1970
6.1 C
-1.04 C
1971
7.5 C
+0.38 C
1972
7.8 C
+0.62 C
1973
7.6 C
+0.49 C
1974
8.1 C
+1.00 C
1975
8.7 C
+1.52 C
1976
6.6 C
-0.54 C
1977
7.0 C
-0.14 C
The fitted trend in annual mean temperature here over 1941 to 1977 is 0.1 C (-0.2 to 0.4) per decade. The interval includes zero, so the trend is not clearly different from zero. In Fahrenheit: 0.2 F (-0.3 to 0.7) 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 Marielund
Measure
Per decade (C)
Per decade (F)
Period
Complete years
Reading
Annual mean temperature
0.1 C (-0.2 to 0.4) per decade
0.2 F (-0.3 to 0.7) per decade
1941 to 1977
30
Not clearly different from zero
Mean daily maximum
-0.2 C (-0.5 to 0.1) per decade
-0.4 F (-0.9 to 0.2) per decade
1941 to 1977
30
Not clearly different from zero
Mean daily minimum
0.4 C (0.2 to 0.7) per decade
0.8 F (0.3 to 1.3) per decade
1941 to 1977
30
Rise
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
1941 to 1978
Yearly extremes at Marielund: the record and the median year
Measure
Record
Year of the record
Median year
Years with a value
Hottest day (TXx)
34.0 C (93.2 F)
1975
29.5 C (85.1 F)
32
Coldest night (TNn)
-32.0 C (-25.6 F)
1942
-17.2 C (0.9 F)
32
Wettest day (Rx1day)
54.0 mm (2.1 in)
1945
25.0 mm (1.0 in)
28
Wettest five days (Rx5day)
89.2 mm (3.5 in)
1945
49.1 mm (1.9 in)
28
Longest dry spell (CDD)
37 days
1969
20 days
28
Hottest day (TXx)
The hottest day of the year at Marielund, 1941 to 1978. The record is 34.0 C (93.2 F) in 1975, marked on the chart; the median year is 29.5 C (85.1 F).
Hottest day (TXx) at Marielund by year
Year
Hottest day (TXx)
1941
32.0 C (89.6 F)
1942
28.0 C (82.4 F)
1943
31.0 C (87.8 F)
1944
30.5 C (86.9 F)
1945
30.5 C (86.9 F)
1946
28.0 C (82.4 F)
1947
32.5 C (90.5 F)
1948
30.5 C (86.9 F)
1949
29.0 C (84.2 F)
1950
29.0 C (84.2 F)
1951
23.0 C (73.4 F)
1958
28.0 C (82.4 F)
1959
31.0 C (87.8 F)
1960
27.0 C (80.6 F)
1961
27.5 C (81.5 F)
1962
25.0 C (77.0 F)
1963
29.0 C (84.2 F)
1964
31.2 C (88.2 F)
1965
24.5 C (76.1 F)
1966
29.0 C (84.2 F)
1967
28.0 C (82.4 F)
1968
31.1 C (88.0 F)
1969
31.5 C (88.7 F)
1970
31.5 C (88.7 F)
1971
31.8 C (89.2 F)
1972
31.6 C (88.9 F)
1973
31.2 C (88.2 F)
1974
26.4 C (79.5 F)
1975
34.0 C (93.2 F)
1976
30.0 C (86.0 F)
1977
28.0 C (82.4 F)
1978
5.4 C (41.7 F)
Coldest night (TNn)
The coldest night of the year at Marielund, 1941 to 1978. The record is -32.0 C (-25.6 F) in 1942, marked on the chart; the median year is -17.2 C (0.9 F).
Coldest night (TNn) at Marielund by year
Year
Coldest night (TNn)
1941
-20.0 C (-4.0 F)
1942
-32.0 C (-25.6 F)
1943
-17.0 C (1.4 F)
1944
-15.0 C (5.0 F)
1945
-17.5 C (0.5 F)
1946
-20.0 C (-4.0 F)
1947
-21.5 C (-6.7 F)
1948
-18.0 C (-0.4 F)
1949
-12.0 C (10.4 F)
1950
-15.0 C (5.0 F)
1951
-10.0 C (14.0 F)
1958
-18.3 C (-0.9 F)
1959
-17.0 C (1.4 F)
1960
-18.2 C (-0.8 F)
1961
-19.5 C (-3.1 F)
1962
-15.0 C (5.0 F)
1963
-19.6 C (-3.3 F)
1964
-15.0 C (5.0 F)
1965
-19.8 C (-3.6 F)
1966
-21.6 C (-6.9 F)
1967
-14.5 C (5.9 F)
1968
-17.5 C (0.5 F)
1969
-15.0 C (5.0 F)
1970
-19.0 C (-2.2 F)
1971
-14.0 C (6.8 F)
1972
-11.4 C (11.5 F)
1973
-12.5 C (9.5 F)
1974
-10.0 C (14.0 F)
1975
-10.9 C (12.4 F)
1976
-18.0 C (-0.4 F)
1977
-14.0 C (6.8 F)
1978
-21.5 C (-6.7 F)
Wettest day (Rx1day)
The wettest day of the year at Marielund, 1941 to 1978. The record is 54.0 mm (2.1 in) in 1945, marked on the chart; the median year is 25.0 mm (1.0 in).
Wettest day (Rx1day) at Marielund by year
Year
Wettest day (Rx1day)
1941
n/a
1942
n/a
1943
n/a
1944
n/a
1945
54.0 mm (2.1 in)
1946
28.8 mm (1.1 in)
1947
28.3 mm (1.1 in)
1948
24.6 mm (1.0 in)
1949
22.8 mm (0.9 in)
1950
48.5 mm (1.9 in)
1951
18.7 mm (0.7 in)
1958
25.4 mm (1.0 in)
1959
22.8 mm (0.9 in)
1960
22.0 mm (0.9 in)
1961
25.5 mm (1.0 in)
1962
19.3 mm (0.8 in)
1963
26.3 mm (1.0 in)
1964
16.4 mm (0.6 in)
1965
28.5 mm (1.1 in)
1966
25.8 mm (1.0 in)
1967
20.0 mm (0.8 in)
1968
40.2 mm (1.6 in)
1969
23.5 mm (0.9 in)
1970
36.4 mm (1.4 in)
1971
21.2 mm (0.8 in)
1972
26.3 mm (1.0 in)
1973
21.5 mm (0.8 in)
1974
29.5 mm (1.2 in)
1975
22.0 mm (0.9 in)
1976
21.0 mm (0.8 in)
1977
48.0 mm (1.9 in)
1978
11.5 mm (0.5 in)
Wettest five days (Rx5day)
The wettest five days of the year at Marielund, 1941 to 1978. The record is 89.2 mm (3.5 in) in 1945, marked on the chart; the median year is 49.1 mm (1.9 in).
Wettest five days (Rx5day) at Marielund by year
Year
Wettest five days (Rx5day)
1941
n/a
1942
n/a
1943
n/a
1944
n/a
1945
89.2 mm (3.5 in)
1946
48.3 mm (1.9 in)
1947
62.3 mm (2.5 in)
1948
44.3 mm (1.7 in)
1949
41.7 mm (1.6 in)
1950
52.6 mm (2.1 in)
1951
56.7 mm (2.2 in)
1958
45.7 mm (1.8 in)
1959
50.1 mm (2.0 in)
1960
50.5 mm (2.0 in)
1961
35.4 mm (1.4 in)
1962
35.5 mm (1.4 in)
1963
47.3 mm (1.9 in)
1964
47.2 mm (1.9 in)
1965
49.8 mm (2.0 in)
1966
44.5 mm (1.8 in)
1967
45.1 mm (1.8 in)
1968
79.1 mm (3.1 in)
1969
47.9 mm (1.9 in)
1970
55.0 mm (2.2 in)
1971
34.6 mm (1.4 in)
1972
49.9 mm (2.0 in)
1973
50.3 mm (2.0 in)
1974
59.7 mm (2.4 in)
1975
48.4 mm (1.9 in)
1976
56.9 mm (2.2 in)
1977
51.1 mm (2.0 in)
1978
20.5 mm (0.8 in)
Longest dry spell (CDD)
The longest dry spell of the year at Marielund, 1941 to 1978. The record is 37 days in 1969, marked on the chart; the median year is 20 days.
Longest dry spell (CDD) at Marielund by year
Year
Longest dry spell (CDD)
1941
n/a
1942
n/a
1943
n/a
1944
n/a
1945
15 days
1946
20 days
1947
25 days
1948
28 days
1949
20 days
1950
14 days
1951
14 days
1958
23 days
1959
32 days
1960
26 days
1961
19 days
1962
19 days
1963
20 days
1964
27 days
1965
27 days
1966
17 days
1967
14 days
1968
19 days
1969
37 days
1970
21 days
1971
15 days
1972
31 days
1973
22 days
1974
23 days
1975
29 days
1976
18 days
1977
16 days
1978
11 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 Marielund falls on 14 May and the median first autumn frost on 7 October, which leaves a median of 147 days between them.
Fitted over all years, the growing season changes by +0.4 days per decade at this station.
Frost dates and growing season at Marielund
Measure
Median, all years
Earliest period
Recent period (1941 to 1977)
Recent against earliest
Fitted trend
Last spring frost
14 May
n/a
14 May
n/a
-2.9 days per decade
First autumn frost
7 October
n/a
7 October
n/a
-2.5 days per decade
Growing days
147 days
n/a
147 days
n/a
+0.4 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.
Download the Data
Data for Marielund standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Marielund 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 2026-10-13 (13 October 2026). Records are computed by this site and are not official.