Record highRecord low2026 daily maximum2026 daily minimum
The band shows the record high and record low for each calendar day at Marathon. 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 Marathon, with 2026 drawn through them
Month
Highest record high
Lowest record low
2026 highest maximum
2026 lowest minimum
Jan
7.2 C (45.0 F)
-36.0 C (-32.8 F)
n/a
n/a
Feb
8.3 C (46.9 F)
-36.1 C (-33.0 F)
n/a
n/a
Mar
12.8 C (55.0 F)
-33.3 C (-27.9 F)
n/a
n/a
Apr
24.5 C (76.1 F)
-21.1 C (-6.0 F)
n/a
n/a
May
28.9 C (84.0 F)
-10.0 C (14.0 F)
n/a
n/a
Jun
30.0 C (86.0 F)
-2.5 C (27.5 F)
n/a
n/a
Jul
30.6 C (87.1 F)
1.5 C (34.7 F)
n/a
n/a
Aug
30.0 C (86.0 F)
1.1 C (34.0 F)
n/a
n/a
Sep
25.6 C (78.1 F)
-6.1 C (21.0 F)
n/a
n/a
Oct
22.8 C (73.0 F)
-9.4 C (15.1 F)
n/a
n/a
Nov
17.2 C (63.0 F)
-27.8 C (-18.0 F)
n/a
n/a
Dec
13.5 C (56.3 F)
-34.4 C (-29.9 F)
n/a
n/a
Which Years Hold Standing Records
1,464 standing records
Year with most
1,464 records at Marathon still stand. 1956 holds the most, with 68.
Standing records at Marathon by the year they were set
Year set
Standing records
1948
12
1950
51
1951
22
1952
40
1953
50
1954
52
1955
60
1956
68
1957
25
1958
48
1959
36
1960
34
1961
39
1962
61
1963
34
1964
64
1965
46
1966
35
1967
52
1968
66
1969
32
1970
32
1971
41
1972
45
1973
36
1974
37
1975
39
1976
35
1977
41
1978
32
1979
33
1980
37
1981
50
1982
33
1983
46
Wettest Day of Each Month
Sep: 93.0 mm (3.7 in)
The wettest day on record for each calendar month at Marathon. The most was 93.0 mm (3.7 in) on 8 September 1977.
Record daily precipitation for each month at Marathon
Month
Record daily precipitation (mm)
Date
Jan
48.3 mm (1.9 in)
21 January 1972
Feb
36.6 mm (1.4 in)
16 February 1970
Mar
44.7 mm (1.8 in)
12 March 1977
Apr
38.1 mm (1.5 in)
15 April 1973
May
43.9 mm (1.7 in)
28 May 1959
Jun
53.3 mm (2.1 in)
8 June 1953
Jul
52.0 mm (2.0 in)
13 July 1977
Aug
83.3 mm (3.3 in)
31 August 1979
Sep
93.0 mm (3.7 in)
8 September 1977
Oct
44.5 mm (1.8 in)
12 October 1983
Nov
39.4 mm (1.6 in)
23 November 1983
Dec
30.5 mm (1.2 in)
22 December 1968
Period of Record Coverage
1948 to 1983
Complete yearUnder 90 percent of days
35 years of record at Marathon, 1948 to 1983. 9 years have data for under 90 percent of days and are left out of rankings: 1948, 1950, 1951, 1963, 1964, 1965, 1981, 1982 and others.
Cooler than the station meanWarmer than the station mean
One stripe for each of 25 complete years at Marathon, 1952 to 1980. Blue stripes are years cooler than the station's own mean of 1.9 C (35.3 F); red stripes are warmer. The coolest year was 1972, at 0.4 C (32.7 F), and the warmest was 1953, at 3.3 C (37.9 F). The strongest colour marks a difference of 1.5 C (2.7 F).
Annual mean temperature at Marathon as warming stripes, 1952 to 1980
Year
Annual mean temperature
Difference from the station mean
1952
3.1 C
+1.25 C
1953
3.3 C
+1.41 C
1955
2.6 C
+0.76 C
1956
1.8 C
-0.03 C
1957
1.4 C
-0.50 C
1958
1.9 C
+0.04 C
1959
1.3 C
-0.61 C
1960
2.5 C
+0.62 C
1961
2.9 C
+0.99 C
1962
1.5 C
-0.39 C
1966
1.5 C
-0.39 C
1967
1.1 C
-0.79 C
1968
2.2 C
+0.34 C
1969
2.6 C
+0.72 C
1970
1.9 C
+0.06 C
1971
2.1 C
+0.21 C
1972
0.4 C
-1.47 C
1973
3.0 C
+1.16 C
1974
1.1 C
-0.76 C
1975
2.2 C
+0.34 C
1976
1.0 C
-0.85 C
1977
2.4 C
+0.52 C
1978
0.7 C
-1.16 C
1979
0.9 C
-0.97 C
1980
1.3 C
-0.55 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
1945 to 1983
Yearly extremes at Marathon: 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)
1950
26.1 C (79.0 F)
35
Coldest night (TNn)
-36.1 C (-33.0 F)
1966
-32.8 C (-27.0 F)
35
Wettest day (Rx1day)
93.0 mm (3.7 in)
1977
39.6 mm (1.6 in)
36
Wettest five days (Rx5day)
123.5 mm (4.9 in)
1979
60.8 mm (2.4 in)
36
Longest dry spell (CDD)
34 days
1960
19 days
36
Hottest day (TXx)
The hottest day of the year at Marathon, 1945 to 1983. The record is 30.6 C (87.1 F) in 1950, marked on the chart; the median year is 26.1 C (79.0 F).
Hottest day (TXx) at Marathon by year
Year
Hottest day (TXx)
1945
n/a
1948
27.8 C (82.0 F)
1950
30.6 C (87.1 F)
1951
22.8 C (73.0 F)
1952
27.8 C (82.0 F)
1953
27.8 C (82.0 F)
1954
24.4 C (75.9 F)
1955
30.0 C (86.0 F)
1956
26.1 C (79.0 F)
1957
23.3 C (73.9 F)
1958
27.2 C (81.0 F)
1959
27.2 C (81.0 F)
1960
26.1 C (79.0 F)
1961
27.2 C (81.0 F)
1962
25.6 C (78.1 F)
1963
23.9 C (75.0 F)
1964
29.4 C (84.9 F)
1965
24.4 C (75.9 F)
1966
26.1 C (79.0 F)
1967
23.9 C (75.0 F)
1968
24.4 C (75.9 F)
1969
26.7 C (80.1 F)
1970
25.6 C (78.1 F)
1971
27.2 C (81.0 F)
1972
30.0 C (86.0 F)
1973
26.7 C (80.1 F)
1974
26.1 C (79.0 F)
1975
28.9 C (84.0 F)
1976
28.9 C (84.0 F)
1977
25.0 C (77.0 F)
1978
26.0 C (78.8 F)
1979
23.5 C (74.3 F)
1980
28.0 C (82.4 F)
1981
26.0 C (78.8 F)
1982
25.0 C (77.0 F)
1983
29.0 C (84.2 F)
Coldest night (TNn)
The coldest night of the year at Marathon, 1945 to 1983. The record is -36.1 C (-33.0 F) in 1966, marked on the chart; the median year is -32.8 C (-27.0 F).
Coldest night (TNn) at Marathon by year
Year
Coldest night (TNn)
1945
n/a
1948
4.4 C (39.9 F)
1950
-31.7 C (-25.1 F)
1951
-28.9 C (-20.0 F)
1952
-31.1 C (-24.0 F)
1953
-34.4 C (-29.9 F)
1954
-32.8 C (-27.0 F)
1955
-33.3 C (-27.9 F)
1956
-28.9 C (-20.0 F)
1957
-34.4 C (-29.9 F)
1958
-31.7 C (-25.1 F)
1959
-31.7 C (-25.1 F)
1960
-30.0 C (-22.0 F)
1961
-32.2 C (-26.0 F)
1962
-34.4 C (-29.9 F)
1963
-29.4 C (-20.9 F)
1964
-31.1 C (-24.0 F)
1965
-34.4 C (-29.9 F)
1966
-36.1 C (-33.0 F)
1967
-33.9 C (-29.0 F)
1968
-34.4 C (-29.9 F)
1969
-25.6 C (-14.1 F)
1970
-33.9 C (-29.0 F)
1971
-32.8 C (-27.0 F)
1972
-34.4 C (-29.9 F)
1973
-31.7 C (-25.1 F)
1974
-32.2 C (-26.0 F)
1975
-33.3 C (-27.9 F)
1976
-33.3 C (-27.9 F)
1977
-32.8 C (-27.0 F)
1978
-29.0 C (-20.2 F)
1979
-34.0 C (-29.2 F)
1980
-29.0 C (-20.2 F)
1981
-33.0 C (-27.4 F)
1982
-36.0 C (-32.8 F)
1983
-32.0 C (-25.6 F)
Wettest day (Rx1day)
The wettest day of the year at Marathon, 1945 to 1983. The record is 93.0 mm (3.7 in) in 1977, marked on the chart; the median year is 39.6 mm (1.6 in).
Wettest day (Rx1day) at Marathon by year
Year
Wettest day (Rx1day)
1945
34.3 mm (1.4 in)
1948
52.3 mm (2.1 in)
1950
30.7 mm (1.2 in)
1951
40.1 mm (1.6 in)
1952
34.3 mm (1.4 in)
1953
53.3 mm (2.1 in)
1954
18.3 mm (0.7 in)
1955
48.8 mm (1.9 in)
1956
37.8 mm (1.5 in)
1957
40.6 mm (1.6 in)
1958
48.5 mm (1.9 in)
1959
48.3 mm (1.9 in)
1960
33.5 mm (1.3 in)
1961
38.6 mm (1.5 in)
1962
38.1 mm (1.5 in)
1963
37.1 mm (1.5 in)
1964
39.6 mm (1.6 in)
1965
51.3 mm (2.0 in)
1966
41.1 mm (1.6 in)
1967
39.6 mm (1.6 in)
1968
44.2 mm (1.7 in)
1969
26.7 mm (1.1 in)
1970
36.6 mm (1.4 in)
1971
39.6 mm (1.6 in)
1972
48.3 mm (1.9 in)
1973
38.1 mm (1.5 in)
1974
39.4 mm (1.6 in)
1975
43.9 mm (1.7 in)
1976
47.0 mm (1.9 in)
1977
93.0 mm (3.7 in)
1978
32.0 mm (1.3 in)
1979
83.3 mm (3.3 in)
1980
29.8 mm (1.2 in)
1981
24.6 mm (1.0 in)
1982
30.0 mm (1.2 in)
1983
60.0 mm (2.4 in)
Wettest five days (Rx5day)
The wettest five days of the year at Marathon, 1945 to 1983. The record is 123.5 mm (4.9 in) in 1979, marked on the chart; the median year is 60.8 mm (2.4 in).
Wettest five days (Rx5day) at Marathon by year
Year
Wettest five days (Rx5day)
1945
63.0 mm (2.5 in)
1948
55.6 mm (2.2 in)
1950
62.4 mm (2.5 in)
1951
44.4 mm (1.7 in)
1952
61.5 mm (2.4 in)
1953
59.4 mm (2.3 in)
1954
35.3 mm (1.4 in)
1955
62.5 mm (2.5 in)
1956
55.8 mm (2.2 in)
1957
53.3 mm (2.1 in)
1958
63.8 mm (2.5 in)
1959
72.4 mm (2.9 in)
1960
53.4 mm (2.1 in)
1961
58.5 mm (2.3 in)
1962
55.9 mm (2.2 in)
1963
59.4 mm (2.3 in)
1964
62.3 mm (2.5 in)
1965
86.4 mm (3.4 in)
1966
58.9 mm (2.3 in)
1967
54.9 mm (2.2 in)
1968
60.9 mm (2.4 in)
1969
45.7 mm (1.8 in)
1970
56.7 mm (2.2 in)
1971
83.9 mm (3.3 in)
1972
60.0 mm (2.4 in)
1973
63.0 mm (2.5 in)
1974
70.7 mm (2.8 in)
1975
92.8 mm (3.7 in)
1976
88.1 mm (3.5 in)
1977
115.8 mm (4.6 in)
1978
60.6 mm (2.4 in)
1979
123.5 mm (4.9 in)
1980
65.0 mm (2.6 in)
1981
41.2 mm (1.6 in)
1982
46.0 mm (1.8 in)
1983
113.0 mm (4.4 in)
Longest dry spell (CDD)
The longest dry spell of the year at Marathon, 1945 to 1983. The record is 34 days in 1960, marked on the chart; the median year is 19 days.
Longest dry spell (CDD) at Marathon by year
Year
Longest dry spell (CDD)
1945
12 days
1948
9 days
1950
15 days
1951
21 days
1952
15 days
1953
17 days
1954
22 days
1955
17 days
1956
19 days
1957
24 days
1958
20 days
1959
17 days
1960
34 days
1961
34 days
1962
14 days
1963
15 days
1964
11 days
1965
11 days
1966
11 days
1967
19 days
1968
13 days
1969
21 days
1970
21 days
1971
14 days
1972
22 days
1973
30 days
1974
11 days
1975
23 days
1976
21 days
1977
12 days
1978
24 days
1979
13 days
1980
19 days
1981
27 days
1982
29 days
1983
28 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
25 years with a frost
Across 25 years with a frost, the median last spring frost at Marathon falls on 26 May and the median first autumn frost on 21 September, which leaves a median of 119 days between them.
Fitted over all years, the growing season changes by -1.1 days per decade at this station.
Frost dates and growing season at Marathon
Measure
Median, all years
Earliest period
Recent period (1952 to 1980)
Recent against earliest
Fitted trend
Last spring frost
26 May
n/a
26 May
n/a
+1.7 days per decade
First autumn frost
21 September
n/a
21 September
n/a
+0.6 days per decade
Growing days
119 days
n/a
119 days
n/a
-1.1 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 Marathon standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Marathon 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.