Record envelope, standing records and threshold days for Marengo (USC00115326), Illinois, United States, with 126 years of record.
Key Facts for Marengo
Marengo (USC00115326) is a weather station in Illinois, United States at 42.26 latitude and -88.61 longitude, 248 m (815 ft) above sea level.
The station reports from 1893 to 2018, 126 years of record.
1,464 records set at Marengo still stand.
Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
Marengo set a daily record precipitation of 22.9 mm (0.9 in) on 21 October 2018.
About the Station
Location: Illinois, United States, 42.26 latitude, -88.61 longitude.
Elevation: 248 m (815 ft).
Period of record: 1893 to 2018, 126 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 Marengo. 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 Marengo, with 2026 drawn through them
Month
Highest record high
Lowest record low
2026 highest maximum
2026 lowest minimum
Jan
16.7 C (62.1 F)
-33.9 C (-29.0 F)
n/a
n/a
Feb
22.8 C (73.0 F)
-32.8 C (-27.0 F)
n/a
n/a
Mar
28.9 C (84.0 F)
-26.7 C (-16.1 F)
n/a
n/a
Apr
34.4 C (93.9 F)
-14.4 C (6.1 F)
n/a
n/a
May
41.7 C (107.1 F)
-6.1 C (21.0 F)
n/a
n/a
Jun
41.7 C (107.1 F)
-1.7 C (28.9 F)
n/a
n/a
Jul
42.8 C (109.0 F)
3.9 C (39.0 F)
n/a
n/a
Aug
41.7 C (107.1 F)
2.8 C (37.0 F)
n/a
n/a
Sep
39.4 C (102.9 F)
-4.4 C (24.1 F)
n/a
n/a
Oct
32.2 C (90.0 F)
-13.3 C (8.1 F)
n/a
n/a
Nov
26.7 C (80.1 F)
-27.2 C (-17.0 F)
n/a
n/a
Dec
19.4 C (66.9 F)
-32.2 C (-26.0 F)
n/a
n/a
Which Years Hold Standing Records
1,464 standing records
Year with most
1,464 records at Marengo still stand. 1936 holds the most, with 32.
Standing records at Marengo by the year they were set
Year set
Standing records
1893
19
1894
16
1895
22
1896
19
1897
18
1898
3
1899
23
1900
12
1901
13
1902
16
1903
10
1904
5
1905
12
1906
7
1907
13
1908
7
1909
15
1910
13
1911
11
1912
12
1913
15
1914
12
1915
13
1916
13
1917
10
1918
14
1919
10
1920
9
1921
14
1922
11
1923
9
1924
12
1925
25
1926
13
1927
7
1928
9
1929
20
1930
25
1931
15
1932
12
1933
17
1934
23
1935
7
1936
32
1937
7
1938
10
1939
18
1940
14
1941
13
1942
13
1943
11
1944
16
1945
10
1946
12
1947
24
1948
4
1949
13
1950
17
1951
17
1952
9
1953
10
1954
8
1955
8
1956
1
1957
7
1958
4
1959
14
1960
10
1961
2
1962
15
1963
19
1964
17
1965
13
1966
13
1967
14
1968
10
1969
7
1970
4
1971
17
1972
8
1973
5
1974
12
1975
8
1976
12
1977
19
1978
4
1979
11
1980
12
1981
7
1982
13
1983
21
1984
6
1985
15
1986
17
1987
13
1988
17
1989
11
1990
12
1991
15
1992
12
1993
3
1994
6
1995
9
1996
9
1997
6
1998
5
1999
7
2000
6
2002
4
2003
6
2004
6
2005
5
2006
7
2007
10
2008
1
2009
9
2010
9
2011
4
2012
22
2013
4
2014
15
2015
11
2016
10
2017
17
2018
9
All-Time Record Progression
8 new records
8 all-time records were set at Marengo between 11 July 1936 and 2 February 2011. Each dot is a new record.
When Marengo set new all-time records
Date
Kind
Detail
1936-07-11
Record high maximum temperature
Record high maximum temperature 42.2 C (108.0 F)
1936-07-14
Record high maximum temperature
Record high maximum temperature 42.8 C (109.0 F)
1967-02-06
Record snow depth
Record snow depth 73.7 cm (29.0 in)
1979-01-11
Record low minimum temperature
Record low minimum temperature -33.9 C (-29.0 F)
1979-01-17
Record snow depth
Record snow depth 96.5 cm (38.0 in)
1986-07-18
Record high minimum temperature
Record high minimum temperature 26.7 C (80.1 F)
2008-02-07
Record daily snowfall
Record daily snowfall 35.6 cm (14.0 in)
2011-02-02
Record daily snowfall
Record daily snowfall 45.7 cm (18.0 in)
Wettest Day of Each Month
Sep: 229.1 mm (9.0 in)
The wettest day on record for each calendar month at Marengo. The most was 229.1 mm (9.0 in) on 7 September 1894.
Record daily precipitation for each month at Marengo
Month
Record daily precipitation (mm)
Date
Jan
75.2 mm (3.0 in)
24 January 1938
Feb
35.6 mm (1.4 in)
2 February 2011
Mar
53.3 mm (2.1 in)
19 March 1948
Apr
100.3 mm (3.9 in)
18 April 2013
May
85.1 mm (3.4 in)
13 May 2010
Jun
130.8 mm (5.1 in)
13 June 1999
Jul
103.4 mm (4.1 in)
2 July 1978
Aug
208.3 mm (8.2 in)
22 August 2002
Sep
229.1 mm (9.0 in)
7 September 1894
Oct
81.3 mm (3.2 in)
10 October 1954
Nov
72.9 mm (2.9 in)
3 November 1935
Dec
58.9 mm (2.3 in)
5 December 1909
Period of Record Coverage
1893 to 2018
Complete yearUnder 90 percent of days
125 years of record at Marengo, 1893 to 2018. 14 years have data for under 90 percent of days and are left out of rankings: 1917, 1918, 1955, 1956, 1998, 1999, 2000, 2002 and others.
Cooler than the station meanWarmer than the station mean
One stripe for each of 103 complete years at Marengo, 1893 to 2016. Blue stripes are years cooler than the station's own mean of 8.8 C (47.8 F); red stripes are warmer. The coolest year was 1893, at 6.7 C (44.1 F), and the warmest was 1921, at 10.9 C (51.6 F). The strongest colour marks a difference of 2.1 C (3.8 F).
Annual mean temperature at Marengo as warming stripes, 1893 to 2016
Year
Annual mean temperature
Difference from the station mean
1893
6.7 C
-2.08 C
1894
9.0 C
+0.26 C
1895
7.5 C
-1.32 C
1896
8.7 C
-0.10 C
1897
8.4 C
-0.41 C
1898
8.7 C
-0.06 C
1899
8.9 C
+0.11 C
1900
9.2 C
+0.38 C
1901
8.4 C
-0.36 C
1902
8.5 C
-0.31 C
1903
8.1 C
-0.70 C
1904
7.4 C
-1.43 C
1905
8.1 C
-0.68 C
1906
9.3 C
+0.47 C
1907
8.1 C
-0.71 C
1908
9.2 C
+0.43 C
1909
8.4 C
-0.41 C
1910
8.8 C
+0.01 C
1911
9.3 C
+0.55 C
1912
7.4 C
-1.37 C
1913
9.3 C
+0.49 C
1914
9.0 C
+0.20 C
1915
8.3 C
-0.44 C
1916
8.3 C
-0.44 C
1919
8.7 C
-0.04 C
1921
10.9 C
+2.09 C
1922
9.9 C
+1.07 C
1923
8.8 C
+0.05 C
1924
7.3 C
-1.44 C
1925
8.5 C
-0.30 C
1926
7.7 C
-1.10 C
1927
9.0 C
+0.26 C
1928
8.8 C
-0.02 C
1929
7.4 C
-1.34 C
1930
9.1 C
+0.36 C
1931
10.8 C
+2.00 C
1932
9.0 C
+0.19 C
1933
9.7 C
+0.91 C
1934
10.0 C
+1.18 C
1935
8.5 C
-0.26 C
1936
8.5 C
-0.29 C
1937
8.5 C
-0.25 C
1938
10.2 C
+1.40 C
1939
10.0 C
+1.25 C
1940
8.2 C
-0.59 C
1941
9.9 C
+1.15 C
1942
8.9 C
+0.09 C
1943
8.4 C
-0.41 C
1944
9.5 C
+0.69 C
1945
8.4 C
-0.34 C
1946
10.4 C
+1.60 C
1947
9.1 C
+0.32 C
1948
9.2 C
+0.46 C
1949
9.8 C
+0.98 C
1950
7.8 C
-1.00 C
1951
7.3 C
-1.48 C
1952
9.3 C
+0.51 C
1953
9.9 C
+1.09 C
1954
9.7 C
+0.87 C
1958
8.1 C
-0.65 C
1959
8.8 C
-0.01 C
1960
8.2 C
-0.54 C
1961
8.6 C
-0.18 C
1962
8.1 C
-0.72 C
1963
8.2 C
-0.60 C
1964
9.7 C
+0.91 C
1965
8.9 C
+0.16 C
1966
8.4 C
-0.37 C
1967
8.2 C
-0.57 C
1968
9.2 C
+0.43 C
1969
8.6 C
-0.19 C
1970
9.0 C
+0.24 C
1971
9.4 C
+0.57 C
1973
10.0 C
+1.19 C
1974
9.1 C
+0.30 C
1975
9.4 C
+0.63 C
1976
8.1 C
-0.64 C
1978
8.2 C
-0.59 C
1980
7.8 C
-0.99 C
1981
8.4 C
-0.40 C
1982
7.8 C
-0.94 C
1983
8.7 C
-0.04 C
1985
7.8 C
-0.95 C
1986
8.7 C
-0.07 C
1987
9.8 C
+1.06 C
1988
8.7 C
-0.07 C
1989
7.5 C
-1.26 C
1990
9.3 C
+0.48 C
1991
9.2 C
+0.43 C
1992
8.4 C
-0.39 C
1993
8.2 C
-0.54 C
1995
8.7 C
-0.05 C
1996
7.6 C
-1.14 C
1997
8.5 C
-0.24 C
2003
8.5 C
-0.25 C
2004
9.0 C
+0.22 C
2005
9.8 C
+1.04 C
2010
9.3 C
+0.56 C
2011
8.9 C
+0.11 C
2012
10.7 C
+1.92 C
2013
7.8 C
-0.99 C
2015
8.9 C
+0.16 C
2016
10.3 C
+1.48 C
The fitted trend in annual mean temperature here over 1893 to 2016 is 0.03 C (-0.02 to 0.08) per decade. The interval includes zero, so the trend is not clearly different from zero. In Fahrenheit: 0.05 F (-0.03 to 0.14) per decade. The slope is a straight line fitted to 103 complete years; the brackets give its 95 percent interval.
Fitted temperature trends per decade at Marengo
Measure
Per decade (C)
Per decade (F)
Period
Complete years
Reading
Annual mean temperature
0.03 C (-0.02 to 0.08) per decade
0.05 F (-0.03 to 0.14) per decade
1893 to 2016
103
Not clearly different from zero
Mean daily maximum
0.1 C (0.1 to 0.2) per decade
0.2 F (0.1 to 0.3) per decade
1893 to 2016
103
Rise
Mean daily minimum
-0.04 C (-0.09 to 0.01) per decade
-0.08 F (-0.17 to 0.02) per decade
1893 to 2016
103
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
1893 to 2018
Yearly extremes at Marengo: the record and the median year
Measure
Record
Year of the record
Median year
Years with a value
Hottest day (TXx)
42.8 C (109.0 F)
1936
36.1 C (97.0 F)
125
Coldest night (TNn)
-33.9 C (-29.0 F)
1979
-26.1 C (-15.0 F)
125
Wettest day (Rx1day)
229.1 mm (9.0 in)
1894
61.3 mm (2.4 in)
126
Wettest five days (Rx5day)
242.4 mm (9.5 in)
2018
89.6 mm (3.5 in)
126
Longest dry spell (CDD)
55 days
1952
21 days
126
Hottest day (TXx)
The hottest day of the year at Marengo, 1893 to 2018. The record is 42.8 C (109.0 F) in 1936, marked on the chart; the median year is 36.1 C (97.0 F).
Hottest day (TXx) at Marengo by year
Year
Hottest day (TXx)
1893
34.4 C (93.9 F)
1894
37.2 C (99.0 F)
1895
35.6 C (96.1 F)
1896
35.0 C (95.0 F)
1897
35.0 C (95.0 F)
1898
33.9 C (93.0 F)
1899
36.7 C (98.1 F)
1900
36.1 C (97.0 F)
1901
41.7 C (107.1 F)
1902
31.7 C (89.1 F)
1903
33.3 C (91.9 F)
1904
33.9 C (93.0 F)
1905
33.3 C (91.9 F)
1906
35.0 C (95.0 F)
1907
33.3 C (91.9 F)
1908
34.4 C (93.9 F)
1909
36.7 C (98.1 F)
1910
37.2 C (99.0 F)
1911
38.3 C (100.9 F)
1912
33.9 C (93.0 F)
1913
36.7 C (98.1 F)
1914
35.6 C (96.1 F)
1915
30.6 C (87.1 F)
1916
38.9 C (102.0 F)
1917
35.6 C (96.1 F)
1918
41.7 C (107.1 F)
1919
38.3 C (100.9 F)
1920
37.2 C (99.0 F)
1921
37.8 C (100.0 F)
1922
39.4 C (102.9 F)
1923
36.7 C (98.1 F)
1924
35.0 C (95.0 F)
1925
38.3 C (100.9 F)
1926
35.0 C (95.0 F)
1927
35.6 C (96.1 F)
1928
33.9 C (93.0 F)
1929
36.7 C (98.1 F)
1930
39.4 C (102.9 F)
1931
37.8 C (100.0 F)
1932
37.2 C (99.0 F)
1933
37.2 C (99.0 F)
1934
41.7 C (107.1 F)
1935
36.1 C (97.0 F)
1936
42.8 C (109.0 F)
1937
37.2 C (99.0 F)
1938
33.9 C (93.0 F)
1939
38.3 C (100.9 F)
1940
40.0 C (104.0 F)
1941
38.3 C (100.9 F)
1942
35.6 C (96.1 F)
1943
35.0 C (95.0 F)
1944
37.2 C (99.0 F)
1945
36.7 C (98.1 F)
1946
39.4 C (102.9 F)
1947
40.0 C (104.0 F)
1948
36.7 C (98.1 F)
1949
36.7 C (98.1 F)
1950
32.8 C (91.0 F)
1951
32.8 C (91.0 F)
1952
35.0 C (95.0 F)
1953
37.8 C (100.0 F)
1954
35.6 C (96.1 F)
1955
37.2 C (99.0 F)
1956
32.2 C (90.0 F)
1957
36.1 C (97.0 F)
1958
33.9 C (93.0 F)
1959
35.0 C (95.0 F)
1960
35.0 C (95.0 F)
1961
34.4 C (93.9 F)
1962
35.6 C (96.1 F)
1963
37.8 C (100.0 F)
1964
36.1 C (97.0 F)
1965
37.2 C (99.0 F)
1966
38.9 C (102.0 F)
1967
35.6 C (96.1 F)
1968
35.0 C (95.0 F)
1969
34.4 C (93.9 F)
1970
36.7 C (98.1 F)
1971
36.7 C (98.1 F)
1972
35.0 C (95.0 F)
1973
36.1 C (97.0 F)
1974
36.7 C (98.1 F)
1975
35.0 C (95.0 F)
1976
38.9 C (102.0 F)
1977
37.2 C (99.0 F)
1978
36.7 C (98.1 F)
1979
33.9 C (93.0 F)
1980
36.7 C (98.1 F)
1981
35.6 C (96.1 F)
1982
33.9 C (93.0 F)
1983
37.2 C (99.0 F)
1984
36.7 C (98.1 F)
1985
36.7 C (98.1 F)
1986
36.7 C (98.1 F)
1987
38.3 C (100.9 F)
1988
40.6 C (105.1 F)
1989
38.9 C (102.0 F)
1990
37.8 C (100.0 F)
1991
37.2 C (99.0 F)
1992
33.9 C (93.0 F)
1993
34.4 C (93.9 F)
1994
37.2 C (99.0 F)
1995
40.6 C (105.1 F)
1996
35.6 C (96.1 F)
1997
36.1 C (97.0 F)
1998
34.4 C (93.9 F)
1999
35.6 C (96.1 F)
2000
21.1 C (70.0 F)
2001
n/a
2002
36.7 C (98.1 F)
2003
36.1 C (97.0 F)
2004
32.2 C (90.0 F)
2005
37.8 C (100.0 F)
2006
36.1 C (97.0 F)
2007
32.8 C (91.0 F)
2008
28.9 C (84.0 F)
2009
34.4 C (93.9 F)
2010
33.9 C (93.0 F)
2011
36.7 C (98.1 F)
2012
39.4 C (102.9 F)
2013
35.0 C (95.0 F)
2014
31.7 C (89.1 F)
2015
32.8 C (91.0 F)
2016
34.4 C (93.9 F)
2017
35.0 C (95.0 F)
2018
35.0 C (95.0 F)
Coldest night (TNn)
The coldest night of the year at Marengo, 1893 to 2018. The record is -33.9 C (-29.0 F) in 1979, marked on the chart; the median year is -26.1 C (-15.0 F).
Coldest night (TNn) at Marengo by year
Year
Coldest night (TNn)
1893
-28.9 C (-20.0 F)
1894
-29.4 C (-20.9 F)
1895
-30.6 C (-23.1 F)
1896
-25.6 C (-14.1 F)
1897
-31.1 C (-24.0 F)
1898
-25.0 C (-13.0 F)
1899
-31.1 C (-24.0 F)
1900
-26.1 C (-15.0 F)
1901
-26.7 C (-16.1 F)
1902
-26.7 C (-16.1 F)
1903
-28.9 C (-20.0 F)
1904
-30.0 C (-22.0 F)
1905
-32.8 C (-27.0 F)
1906
-18.9 C (-2.0 F)
1907
-24.4 C (-11.9 F)
1908
-25.0 C (-13.0 F)
1909
-26.1 C (-15.0 F)
1910
-29.4 C (-20.9 F)
1911
-21.1 C (-6.0 F)
1912
-28.9 C (-20.0 F)
1913
-22.8 C (-9.0 F)
1914
-28.3 C (-18.9 F)
1915
-30.6 C (-23.1 F)
1916
-26.1 C (-15.0 F)
1917
-27.8 C (-18.0 F)
1918
-13.9 C (7.0 F)
1919
-30.0 C (-22.0 F)
1920
-25.6 C (-14.1 F)
1921
-18.3 C (-0.9 F)
1922
-25.6 C (-14.1 F)
1923
-24.4 C (-11.9 F)
1924
-31.1 C (-24.0 F)
1925
-26.1 C (-15.0 F)
1926
-24.4 C (-11.9 F)
1927
-28.3 C (-18.9 F)
1928
-23.9 C (-11.0 F)
1929
-29.4 C (-20.9 F)
1930
-31.7 C (-25.1 F)
1931
-21.1 C (-6.0 F)
1932
-26.1 C (-15.0 F)
1933
-31.7 C (-25.1 F)
1934
-23.3 C (-9.9 F)
1935
-25.6 C (-14.1 F)
1936
-31.7 C (-25.1 F)
1937
-20.0 C (-4.0 F)
1938
-21.1 C (-6.0 F)
1939
-18.3 C (-0.9 F)
1940
-29.4 C (-20.9 F)
1941
-23.3 C (-9.9 F)
1942
-28.9 C (-20.0 F)
1943
-27.2 C (-17.0 F)
1944
-29.4 C (-20.9 F)
1945
-26.1 C (-15.0 F)
1946
-21.1 C (-6.0 F)
1947
-27.2 C (-17.0 F)
1948
-26.1 C (-15.0 F)
1949
-25.0 C (-13.0 F)
1950
-32.2 C (-26.0 F)
1951
-31.7 C (-25.1 F)
1952
-24.4 C (-11.9 F)
1953
-21.1 C (-6.0 F)
1954
-25.0 C (-13.0 F)
1955
-27.8 C (-18.0 F)
1956
-17.8 C (0.0 F)
1957
-26.1 C (-15.0 F)
1958
-27.2 C (-17.0 F)
1959
-31.1 C (-24.0 F)
1960
-27.8 C (-18.0 F)
1961
-23.3 C (-9.9 F)
1962
-28.9 C (-20.0 F)
1963
-32.2 C (-26.0 F)
1964
-17.8 C (0.0 F)
1965
-27.2 C (-17.0 F)
1966
-30.0 C (-22.0 F)
1967
-27.2 C (-17.0 F)
1968
-27.2 C (-17.0 F)
1969
-24.4 C (-11.9 F)
1970
-28.3 C (-18.9 F)
1971
-26.7 C (-16.1 F)
1972
-29.4 C (-20.9 F)
1973
-22.2 C (-8.0 F)
1974
-27.8 C (-18.0 F)
1975
-25.0 C (-13.0 F)
1976
-28.3 C (-18.9 F)
1977
-30.6 C (-23.1 F)
1978
-25.0 C (-13.0 F)
1979
-33.9 C (-29.0 F)
1980
-23.3 C (-9.9 F)
1981
-25.6 C (-14.1 F)
1982
-31.7 C (-25.1 F)
1983
-30.6 C (-23.1 F)
1984
-30.6 C (-23.1 F)
1985
-33.3 C (-27.9 F)
1986
-27.8 C (-18.0 F)
1987
-23.3 C (-9.9 F)
1988
-28.3 C (-18.9 F)
1989
-27.2 C (-17.0 F)
1990
-22.8 C (-9.0 F)
1991
-28.3 C (-18.9 F)
1992
-23.3 C (-9.9 F)
1993
-23.3 C (-9.9 F)
1994
-31.1 C (-24.0 F)
1995
-22.2 C (-8.0 F)
1996
-30.6 C (-23.1 F)
1997
-26.1 C (-15.0 F)
1998
-21.1 C (-6.0 F)
1999
-19.4 C (-2.9 F)
2000
-23.3 C (-9.9 F)
2001
n/a
2002
-17.2 C (1.0 F)
2003
-22.2 C (-8.0 F)
2004
-24.4 C (-11.9 F)
2005
-22.8 C (-9.0 F)
2006
-18.9 C (-2.0 F)
2007
-26.1 C (-15.0 F)
2008
-22.2 C (-8.0 F)
2009
-32.2 C (-26.0 F)
2010
-24.4 C (-11.9 F)
2011
-29.4 C (-20.9 F)
2012
-19.4 C (-2.9 F)
2013
-22.8 C (-9.0 F)
2014
-30.0 C (-22.0 F)
2015
-26.7 C (-16.1 F)
2016
-28.9 C (-20.0 F)
2017
-23.9 C (-11.0 F)
2018
-27.8 C (-18.0 F)
Wettest day (Rx1day)
The wettest day of the year at Marengo, 1893 to 2018. The record is 229.1 mm (9.0 in) in 1894, marked on the chart; the median year is 61.3 mm (2.4 in).
Wettest day (Rx1day) at Marengo by year
Year
Wettest day (Rx1day)
1893
69.6 mm (2.7 in)
1894
229.1 mm (9.0 in)
1895
56.4 mm (2.2 in)
1896
74.4 mm (2.9 in)
1897
38.4 mm (1.5 in)
1898
111.8 mm (4.4 in)
1899
67.3 mm (2.6 in)
1900
48.5 mm (1.9 in)
1901
35.8 mm (1.4 in)
1902
40.4 mm (1.6 in)
1903
67.6 mm (2.7 in)
1904
43.9 mm (1.7 in)
1905
84.6 mm (3.3 in)
1906
67.8 mm (2.7 in)
1907
40.4 mm (1.6 in)
1908
38.6 mm (1.5 in)
1909
75.4 mm (3.0 in)
1910
40.6 mm (1.6 in)
1911
49.0 mm (1.9 in)
1912
81.3 mm (3.2 in)
1913
64.8 mm (2.6 in)
1914
41.1 mm (1.6 in)
1915
47.0 mm (1.9 in)
1916
76.5 mm (3.0 in)
1917
49.5 mm (1.9 in)
1918
49.8 mm (2.0 in)
1919
62.7 mm (2.5 in)
1920
46.5 mm (1.8 in)
1921
43.2 mm (1.7 in)
1922
71.1 mm (2.8 in)
1923
48.8 mm (1.9 in)
1924
43.4 mm (1.7 in)
1925
56.6 mm (2.2 in)
1926
75.7 mm (3.0 in)
1927
62.2 mm (2.4 in)
1928
68.1 mm (2.7 in)
1929
68.6 mm (2.7 in)
1930
72.4 mm (2.9 in)
1931
35.1 mm (1.4 in)
1932
59.4 mm (2.3 in)
1933
63.5 mm (2.5 in)
1934
38.1 mm (1.5 in)
1935
72.9 mm (2.9 in)
1936
55.4 mm (2.2 in)
1937
65.0 mm (2.6 in)
1938
77.2 mm (3.0 in)
1939
63.0 mm (2.5 in)
1940
47.8 mm (1.9 in)
1941
67.8 mm (2.7 in)
1942
64.0 mm (2.5 in)
1943
62.0 mm (2.4 in)
1944
41.4 mm (1.6 in)
1945
44.2 mm (1.7 in)
1946
31.0 mm (1.2 in)
1947
58.9 mm (2.3 in)
1948
53.3 mm (2.1 in)
1949
52.1 mm (2.1 in)
1950
68.8 mm (2.7 in)
1951
84.6 mm (3.3 in)
1952
82.3 mm (3.2 in)
1953
77.7 mm (3.1 in)
1954
81.3 mm (3.2 in)
1955
43.2 mm (1.7 in)
1956
49.8 mm (2.0 in)
1957
53.3 mm (2.1 in)
1958
55.4 mm (2.2 in)
1959
41.7 mm (1.6 in)
1960
61.0 mm (2.4 in)
1961
71.1 mm (2.8 in)
1962
56.4 mm (2.2 in)
1963
78.7 mm (3.1 in)
1964
50.8 mm (2.0 in)
1965
47.5 mm (1.9 in)
1966
34.8 mm (1.4 in)
1967
88.9 mm (3.5 in)
1968
69.3 mm (2.7 in)
1969
69.9 mm (2.8 in)
1970
71.1 mm (2.8 in)
1971
49.5 mm (1.9 in)
1972
72.4 mm (2.9 in)
1973
61.5 mm (2.4 in)
1974
57.2 mm (2.3 in)
1975
73.7 mm (2.9 in)
1976
55.9 mm (2.2 in)
1977
58.4 mm (2.3 in)
1978
103.4 mm (4.1 in)
1979
58.4 mm (2.3 in)
1980
42.4 mm (1.7 in)
1981
57.9 mm (2.3 in)
1982
83.8 mm (3.3 in)
1983
44.5 mm (1.8 in)
1984
52.3 mm (2.1 in)
1985
58.7 mm (2.3 in)
1986
84.8 mm (3.3 in)
1987
66.0 mm (2.6 in)
1988
56.9 mm (2.2 in)
1989
63.8 mm (2.5 in)
1990
64.3 mm (2.5 in)
1991
58.9 mm (2.3 in)
1992
45.7 mm (1.8 in)
1993
60.2 mm (2.4 in)
1994
61.0 mm (2.4 in)
1995
49.8 mm (2.0 in)
1996
77.0 mm (3.0 in)
1997
69.9 mm (2.8 in)
1998
49.8 mm (2.0 in)
1999
130.8 mm (5.1 in)
2000
73.7 mm (2.9 in)
2001
38.6 mm (1.5 in)
2002
208.3 mm (8.2 in)
2003
58.2 mm (2.3 in)
2004
56.9 mm (2.2 in)
2005
51.3 mm (2.0 in)
2006
64.0 mm (2.5 in)
2007
140.7 mm (5.5 in)
2008
38.9 mm (1.5 in)
2009
57.2 mm (2.3 in)
2010
88.4 mm (3.5 in)
2011
85.6 mm (3.4 in)
2012
70.1 mm (2.8 in)
2013
100.3 mm (3.9 in)
2014
71.1 mm (2.8 in)
2015
81.5 mm (3.2 in)
2016
92.2 mm (3.6 in)
2017
81.3 mm (3.2 in)
2018
130.6 mm (5.1 in)
Wettest five days (Rx5day)
The wettest five days of the year at Marengo, 1893 to 2018. The record is 242.4 mm (9.5 in) in 2018, marked on the chart; the median year is 89.6 mm (3.5 in).
Wettest five days (Rx5day) at Marengo by year
Year
Wettest five days (Rx5day)
1893
81.5 mm (3.2 in)
1894
51.1 mm (2.0 in)
1895
91.4 mm (3.6 in)
1896
123.7 mm (4.9 in)
1897
72.7 mm (2.9 in)
1898
136.2 mm (5.4 in)
1899
71.9 mm (2.8 in)
1900
114.1 mm (4.5 in)
1901
61.8 mm (2.4 in)
1902
81.0 mm (3.2 in)
1903
90.9 mm (3.6 in)
1904
80.2 mm (3.2 in)
1905
156.3 mm (6.2 in)
1906
100.1 mm (3.9 in)
1907
72.0 mm (2.8 in)
1908
62.6 mm (2.5 in)
1909
99.0 mm (3.9 in)
1910
55.6 mm (2.2 in)
1911
139.9 mm (5.5 in)
1912
129.3 mm (5.1 in)
1913
84.9 mm (3.3 in)
1914
69.1 mm (2.7 in)
1915
54.7 mm (2.2 in)
1916
108.9 mm (4.3 in)
1917
67.2 mm (2.6 in)
1918
90.2 mm (3.6 in)
1919
89.6 mm (3.5 in)
1920
74.0 mm (2.9 in)
1921
86.1 mm (3.4 in)
1922
118.1 mm (4.6 in)
1923
71.4 mm (2.8 in)
1924
87.6 mm (3.4 in)
1925
79.5 mm (3.1 in)
1926
90.4 mm (3.6 in)
1927
78.7 mm (3.1 in)
1928
82.3 mm (3.2 in)
1929
100.4 mm (4.0 in)
1930
83.0 mm (3.3 in)
1931
84.7 mm (3.3 in)
1932
62.4 mm (2.5 in)
1933
110.7 mm (4.4 in)
1934
76.5 mm (3.0 in)
1935
115.0 mm (4.5 in)
1936
131.5 mm (5.2 in)
1937
105.7 mm (4.2 in)
1938
147.1 mm (5.8 in)
1939
90.4 mm (3.6 in)
1940
78.5 mm (3.1 in)
1941
119.9 mm (4.7 in)
1942
77.7 mm (3.1 in)
1943
70.4 mm (2.8 in)
1944
53.0 mm (2.1 in)
1945
70.1 mm (2.8 in)
1946
50.9 mm (2.0 in)
1947
83.8 mm (3.3 in)
1948
95.8 mm (3.8 in)
1949
76.7 mm (3.0 in)
1950
121.7 mm (4.8 in)
1951
107.5 mm (4.2 in)
1952
101.7 mm (4.0 in)
1953
89.6 mm (3.5 in)
1954
97.6 mm (3.8 in)
1955
67.0 mm (2.6 in)
1956
49.8 mm (2.0 in)
1957
76.9 mm (3.0 in)
1958
79.8 mm (3.1 in)
1959
91.0 mm (3.6 in)
1960
87.2 mm (3.4 in)
1961
116.1 mm (4.6 in)
1962
56.4 mm (2.2 in)
1963
84.5 mm (3.3 in)
1964
55.6 mm (2.2 in)
1965
80.5 mm (3.2 in)
1966
59.2 mm (2.3 in)
1967
160.5 mm (6.3 in)
1968
124.4 mm (4.9 in)
1969
111.0 mm (4.4 in)
1970
106.7 mm (4.2 in)
1971
55.6 mm (2.2 in)
1972
131.1 mm (5.2 in)
1973
114.4 mm (4.5 in)
1974
98.8 mm (3.9 in)
1975
87.4 mm (3.4 in)
1976
111.4 mm (4.4 in)
1977
72.4 mm (2.9 in)
1978
180.1 mm (7.1 in)
1979
107.9 mm (4.2 in)
1980
82.3 mm (3.2 in)
1981
102.4 mm (4.0 in)
1982
93.5 mm (3.7 in)
1983
74.1 mm (2.9 in)
1984
86.9 mm (3.4 in)
1985
75.7 mm (3.0 in)
1986
153.4 mm (6.0 in)
1987
124.2 mm (4.9 in)
1988
64.6 mm (2.5 in)
1989
123.3 mm (4.9 in)
1990
131.6 mm (5.2 in)
1991
104.9 mm (4.1 in)
1992
72.2 mm (2.8 in)
1993
116.6 mm (4.6 in)
1994
123.7 mm (4.9 in)
1995
65.8 mm (2.6 in)
1996
117.9 mm (4.6 in)
1997
71.4 mm (2.8 in)
1998
49.8 mm (2.0 in)
1999
220.6 mm (8.7 in)
2000
73.7 mm (2.9 in)
2001
77.9 mm (3.1 in)
2002
224.0 mm (8.8 in)
2003
73.2 mm (2.9 in)
2004
93.7 mm (3.7 in)
2005
72.1 mm (2.8 in)
2006
117.6 mm (4.6 in)
2007
196.8 mm (7.7 in)
2008
96.9 mm (3.8 in)
2009
79.1 mm (3.1 in)
2010
116.6 mm (4.6 in)
2011
101.6 mm (4.0 in)
2012
78.5 mm (3.1 in)
2013
120.3 mm (4.7 in)
2014
83.8 mm (3.3 in)
2015
136.1 mm (5.4 in)
2016
118.1 mm (4.6 in)
2017
126.8 mm (5.0 in)
2018
242.4 mm (9.5 in)
Longest dry spell (CDD)
The longest dry spell of the year at Marengo, 1893 to 2018. The record is 55 days in 1952, marked on the chart; the median year is 21 days.
Longest dry spell (CDD) at Marengo by year
Year
Longest dry spell (CDD)
1893
32 days
1894
26 days
1895
30 days
1896
22 days
1897
24 days
1898
17 days
1899
36 days
1900
18 days
1901
18 days
1902
22 days
1903
26 days
1904
21 days
1905
18 days
1906
20 days
1907
18 days
1908
40 days
1909
17 days
1910
31 days
1911
21 days
1912
13 days
1913
22 days
1914
22 days
1915
30 days
1916
19 days
1917
19 days
1918
20 days
1919
32 days
1920
23 days
1921
18 days
1922
27 days
1923
21 days
1924
32 days
1925
30 days
1926
14 days
1927
19 days
1928
27 days
1929
18 days
1930
23 days
1931
27 days
1932
17 days
1933
39 days
1934
25 days
1935
16 days
1936
27 days
1937
15 days
1938
23 days
1939
29 days
1940
17 days
1941
18 days
1942
21 days
1943
27 days
1944
27 days
1945
23 days
1946
22 days
1947
16 days
1948
20 days
1949
24 days
1950
30 days
1951
16 days
1952
55 days
1953
23 days
1954
15 days
1955
21 days
1956
14 days
1957
28 days
1958
36 days
1959
24 days
1960
14 days
1961
23 days
1962
16 days
1963
22 days
1964
31 days
1965
15 days
1966
18 days
1967
23 days
1968
19 days
1969
48 days
1970
17 days
1971
17 days
1972
16 days
1973
16 days
1974
14 days
1975
14 days
1976
25 days
1977
18 days
1978
22 days
1979
32 days
1980
20 days
1981
25 days
1982
17 days
1983
18 days
1984
22 days
1985
14 days
1986
23 days
1987
14 days
1988
33 days
1989
27 days
1990
19 days
1991
23 days
1992
20 days
1993
14 days
1994
22 days
1995
38 days
1996
25 days
1997
18 days
1998
18 days
1999
45 days
2000
15 days
2001
31 days
2002
29 days
2003
32 days
2004
18 days
2005
24 days
2006
18 days
2007
33 days
2008
14 days
2009
22 days
2010
18 days
2011
18 days
2012
20 days
2013
21 days
2014
19 days
2015
19 days
2016
22 days
2017
11 days
2018
16 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
103 years with a frost
Across 103 years with a frost, the median last spring frost at Marengo falls on 4 May and the median first autumn frost on 4 October, which leaves a median of 154 days between them.
In 1973 to 2016 the median growing season was 152 days. That is 17 days fewer than in 1893 to 1925.
Fitted over all years, the growing season changes by -1.3 days per decade at this station.
Frost dates and growing season at Marengo
Measure
Median, all years
Earliest period (1893 to 1925)
Recent period (1973 to 2016)
Recent against earliest
Fitted trend
Last spring frost
4 May
30 April
6 May
6 days later
+0.7 days per decade
First autumn frost
4 October
12 October
4 October
8 days earlier
-0.6 days per decade
Growing days
154 days
169 days
152 days
17 days fewer
-1.3 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
109 years, 1893 to 2013
A day with at least 59.5 mm (2.3 in) of rain is expected about once in 2 years. A day with at least 143.5 mm (5.6 in) of rain is expected about once in 100 years.
Rainfall return levels at Marengo: the daily rain expected about once in a given number of years
Expected about once in
A day with at least
Note
2 years
59.5 mm (2.3 in)
5 years
77.9 mm (3.1 in)
10 years
91.6 mm (3.6 in)
25 years
110.8 mm (4.4 in)
50 years
126.5 mm (5.0 in)
100 years
143.5 mm (5.6 in)
The levels come from a generalised extreme value (GEV) distribution fitted by L-moments to the wettest-day total of each year, 109 years of values from 1893 to 2013.
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: 229.1 mm (9.0 in) in 1894; 208.3 mm (8.2 in) in 2002; 111.8 mm (4.4 in) in 1898.
Station Changes
No change in the annual mean temperature of this station was found against its neighbours.
Download the Data
Data for Marengo standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Marengo 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 2026-10-16 (16 October 2026). Records are computed by this site and are not official.