Record envelope, standing records and threshold days for Independence #1 (USC00134049), Iowa, United States, with 148 years of record.
Key Facts for Independence #1
Independence #1 (USC00134049) is a weather station in Iowa, United States at 42.53 latitude and -91.88 longitude, 308 m (1,010 ft) above sea level.
The station reports from 1862 to 2009, 148 years of record.
1,464 records set at Independence #1 still stand.
Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
Independence #1 tied a daily record low minimum temperature of 7.2 C (45.0 F) on 31 May 2009.
About the Station
Location: Iowa, United States, 42.53 latitude, -91.88 longitude.
Elevation: 308 m (1,010 ft).
Period of record: 1862 to 2009, 148 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 Independence #1. 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 Independence #1, with 2026 drawn through them
Month
Highest record high
Lowest record low
2026 highest maximum
2026 lowest minimum
Jan
16.1 C (61.0 F)
-35.0 C (-31.0 F)
n/a
n/a
Feb
18.9 C (66.0 F)
-34.4 C (-29.9 F)
n/a
n/a
Mar
30.0 C (86.0 F)
-23.9 C (-11.0 F)
n/a
n/a
Apr
32.2 C (90.0 F)
-18.3 C (-0.9 F)
n/a
n/a
May
33.9 C (93.0 F)
-6.7 C (19.9 F)
n/a
n/a
Jun
37.8 C (100.0 F)
2.2 C (36.0 F)
n/a
n/a
Jul
38.9 C (102.0 F)
5.0 C (41.0 F)
n/a
n/a
Aug
38.3 C (100.9 F)
2.2 C (36.0 F)
n/a
n/a
Sep
35.6 C (96.1 F)
-3.3 C (26.1 F)
n/a
n/a
Oct
34.4 C (93.9 F)
-9.4 C (15.1 F)
n/a
n/a
Nov
26.1 C (79.0 F)
-25.6 C (-14.1 F)
n/a
n/a
Dec
19.4 C (66.9 F)
-31.7 C (-25.1 F)
n/a
n/a
Which Years Hold Standing Records
1,464 standing records
Year with most
1,464 records at Independence #1 still stand. 1885 holds the most, with 80.
Standing records at Independence #1 by the year they were set
Year set
Standing records
1883
31
1884
41
1885
80
1886
58
1887
74
1888
8
1892
33
1981
16
1982
49
1983
65
1984
37
1985
59
1986
50
1987
32
1988
54
1989
54
1990
42
1991
59
1992
37
1993
33
1994
36
1995
35
1996
36
1997
29
1998
58
1999
38
2000
53
2001
35
2002
42
2003
44
2004
44
2005
40
2006
10
2007
27
2008
21
2009
4
All-Time Record Progression
1 new records
1 all-time records were set at Independence #1 between 16 January 2009 and 16 January 2009. Each dot is a new record.
When Independence #1 set new all-time records
Date
Kind
Detail
2009-01-16
Record low minimum temperature
Record low minimum temperature -35.0 C (-31.0 F)
Wettest Day of Each Month
Sep: 190.5 mm (7.5 in)
The wettest day on record for each calendar month at Independence #1. The most was 190.5 mm (7.5 in) on 23 September 1884.
Record daily precipitation for each month at Independence #1
Month
Record daily precipitation (mm)
Date
Jan
44.5 mm (1.8 in)
2 January 1876
Feb
48.3 mm (1.9 in)
14 February 1869
Mar
89.7 mm (3.5 in)
31 March 1998
Apr
77.7 mm (3.1 in)
23 April 1989
May
94.2 mm (3.7 in)
30 May 2008
Jun
123.2 mm (4.9 in)
26 June 1869
Jul
144.8 mm (5.7 in)
17 July 1968
Aug
154.4 mm (6.1 in)
20 August 2007
Sep
190.5 mm (7.5 in)
23 September 1884
Oct
88.9 mm (3.5 in)
17 October 1877
Nov
107.2 mm (4.2 in)
4 November 2003
Dec
50.8 mm (2.0 in)
11 December 1869
Period of Record Coverage
1883 to 2009
Complete yearUnder 90 percent of days
36 years of record at Independence #1, 1883 to 2009. 11 years have data for under 90 percent of days and are left out of rankings: 1883, 1884, 1886, 1888, 1892, 1981, 2001, 2005 and others.
Cooler than the station meanWarmer than the station mean
One stripe for each of 25 complete years at Independence #1, 1885 to 2008. Blue stripes are years cooler than the station's own mean of 8.4 C (47.1 F); red stripes are warmer. The coolest year was 1885, at 6.3 C (43.4 F), and the warmest was 1998, at 10.9 C (51.6 F). The strongest colour marks a difference of 2.6 C (4.7 F).
Annual mean temperature at Independence #1 as warming stripes, 1885 to 2008
Year
Annual mean temperature
Difference from the station mean
1885
6.3 C
-2.07 C
1982
7.4 C
-1.03 C
1983
8.3 C
-0.09 C
1984
8.0 C
-0.43 C
1985
6.6 C
-1.84 C
1986
8.3 C
-0.11 C
1987
10.2 C
+1.84 C
1988
8.9 C
+0.46 C
1989
7.9 C
-0.53 C
1990
9.5 C
+1.12 C
1991
8.9 C
+0.48 C
1992
8.2 C
-0.22 C
1993
7.6 C
-0.79 C
1994
8.5 C
+0.07 C
1995
8.4 C
+0.03 C
1996
7.3 C
-1.06 C
1997
8.6 C
+0.18 C
1998
10.9 C
+2.52 C
1999
10.2 C
+1.76 C
2000
9.5 C
+1.08 C
2001
9.5 C
+1.10 C
2002
8.5 C
+0.11 C
2003
7.5 C
-0.88 C
2004
8.0 C
-0.36 C
2008
7.0 C
-1.37 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
1862 to 2009
Yearly extremes at Independence #1: the record and the median year
Measure
Record
Year of the record
Median year
Years with a value
Hottest day (TXx)
38.9 C (102.0 F)
1988
34.4 C (93.9 F)
36
Coldest night (TNn)
-35.0 C (-31.0 F)
2009
-28.3 C (-19.0 F)
36
Wettest day (Rx1day)
190.5 mm (7.5 in)
1884
68.6 mm (2.7 in)
81
Wettest five days (Rx5day)
208.0 mm (8.2 in)
2007
104.2 mm (4.1 in)
80
Longest dry spell (CDD)
41 days
2003
23 days
81
Hottest day (TXx)
The hottest day of the year at Independence #1, 1862 to 2009. The record is 38.9 C (102.0 F) in 1988, marked on the chart; the median year is 34.4 C (93.9 F).
Hottest day (TXx) at Independence #1 by year
Year
Hottest day (TXx)
1862
n/a
1863
n/a
1864
n/a
1865
n/a
1866
n/a
1867
n/a
1868
n/a
1869
n/a
1870
n/a
1871
n/a
1872
n/a
1873
n/a
1874
n/a
1875
n/a
1876
n/a
1877
n/a
1878
n/a
1879
n/a
1880
n/a
1881
n/a
1882
n/a
1883
31.1 C (88.0 F)
1884
29.4 C (84.9 F)
1885
33.3 C (91.9 F)
1886
34.4 C (93.9 F)
1887
34.4 C (93.9 F)
1888
1.7 C (35.1 F)
1889
n/a
1890
n/a
1891
n/a
1892
34.2 C (93.6 F)
1955
n/a
1956
n/a
1957
n/a
1958
n/a
1959
n/a
1960
n/a
1961
n/a
1962
n/a
1963
n/a
1964
n/a
1965
n/a
1966
n/a
1967
n/a
1968
n/a
1969
n/a
1970
n/a
1971
n/a
1972
n/a
1973
n/a
1974
n/a
1975
n/a
1976
n/a
1977
n/a
1978
n/a
1979
n/a
1980
n/a
1981
34.4 C (93.9 F)
1982
35.0 C (95.0 F)
1983
36.7 C (98.1 F)
1984
35.0 C (95.0 F)
1985
36.1 C (97.0 F)
1986
34.4 C (93.9 F)
1987
36.1 C (97.0 F)
1988
38.9 C (102.0 F)
1989
36.7 C (98.1 F)
1990
36.7 C (98.1 F)
1991
35.0 C (95.0 F)
1992
33.3 C (91.9 F)
1993
31.7 C (89.1 F)
1994
33.9 C (93.0 F)
1995
37.8 C (100.0 F)
1996
35.0 C (95.0 F)
1997
34.4 C (93.9 F)
1998
35.0 C (95.0 F)
1999
35.6 C (96.1 F)
2000
36.1 C (97.0 F)
2001
34.4 C (93.9 F)
2002
35.0 C (95.0 F)
2003
36.7 C (98.1 F)
2004
31.7 C (89.1 F)
2005
35.0 C (95.0 F)
2006
34.4 C (93.9 F)
2007
33.9 C (93.0 F)
2008
32.2 C (90.0 F)
2009
30.6 C (87.1 F)
Coldest night (TNn)
The coldest night of the year at Independence #1, 1862 to 2009. The record is -35.0 C (-31.0 F) in 2009, marked on the chart; the median year is -28.3 C (-19.0 F).
Coldest night (TNn) at Independence #1 by year
Year
Coldest night (TNn)
1862
n/a
1863
n/a
1864
n/a
1865
n/a
1866
n/a
1867
n/a
1868
n/a
1869
n/a
1870
n/a
1871
n/a
1872
n/a
1873
n/a
1874
n/a
1875
n/a
1876
n/a
1877
n/a
1878
n/a
1879
n/a
1880
n/a
1881
n/a
1882
n/a
1883
-18.9 C (-2.0 F)
1884
-30.0 C (-22.0 F)
1885
-32.2 C (-26.0 F)
1886
-32.2 C (-26.0 F)
1887
-30.0 C (-22.0 F)
1888
-33.9 C (-29.0 F)
1889
n/a
1890
n/a
1891
n/a
1892
-28.9 C (-20.0 F)
1955
n/a
1956
n/a
1957
n/a
1958
n/a
1959
n/a
1960
n/a
1961
n/a
1962
n/a
1963
n/a
1964
n/a
1965
n/a
1966
n/a
1967
n/a
1968
n/a
1969
n/a
1970
n/a
1971
n/a
1972
n/a
1973
n/a
1974
n/a
1975
n/a
1976
n/a
1977
n/a
1978
n/a
1979
n/a
1980
n/a
1981
-22.2 C (-8.0 F)
1982
-32.2 C (-26.0 F)
1983
-31.7 C (-25.1 F)
1984
-30.0 C (-22.0 F)
1985
-32.2 C (-26.0 F)
1986
-30.0 C (-22.0 F)
1987
-23.9 C (-11.0 F)
1988
-30.0 C (-22.0 F)
1989
-30.6 C (-23.1 F)
1990
-26.7 C (-16.1 F)
1991
-27.8 C (-18.0 F)
1992
-23.9 C (-11.0 F)
1993
-27.2 C (-17.0 F)
1994
-31.7 C (-25.1 F)
1995
-22.8 C (-9.0 F)
1996
-34.4 C (-29.9 F)
1997
-26.1 C (-15.0 F)
1998
-22.8 C (-9.0 F)
1999
-29.4 C (-20.9 F)
2000
-25.0 C (-13.0 F)
2001
-23.9 C (-11.0 F)
2002
-23.9 C (-11.0 F)
2003
-23.9 C (-11.0 F)
2004
-26.7 C (-16.1 F)
2005
-27.8 C (-18.0 F)
2006
-16.7 C (1.9 F)
2007
-16.7 C (1.9 F)
2008
-29.4 C (-20.9 F)
2009
-35.0 C (-31.0 F)
Wettest day (Rx1day)
The wettest day of the year at Independence #1, 1862 to 2009. The record is 190.5 mm (7.5 in) in 1884, marked on the chart; the median year is 68.6 mm (2.7 in).
Wettest day (Rx1day) at Independence #1 by year
Year
Wettest day (Rx1day)
1862
n/a
1863
n/a
1864
n/a
1865
n/a
1866
n/a
1867
71.1 mm (2.8 in)
1868
68.6 mm (2.7 in)
1869
123.2 mm (4.9 in)
1870
111.8 mm (4.4 in)
1871
45.7 mm (1.8 in)
1872
76.2 mm (3.0 in)
1873
63.5 mm (2.5 in)
1874
76.2 mm (3.0 in)
1875
88.9 mm (3.5 in)
1876
80.0 mm (3.1 in)
1877
88.9 mm (3.5 in)
1878
94.0 mm (3.7 in)
1879
95.3 mm (3.8 in)
1880
114.3 mm (4.5 in)
1881
54.6 mm (2.1 in)
1882
61.0 mm (2.4 in)
1883
82.6 mm (3.3 in)
1884
190.5 mm (7.5 in)
1885
58.4 mm (2.3 in)
1886
50.8 mm (2.0 in)
1887
78.0 mm (3.1 in)
1888
45.0 mm (1.8 in)
1889
91.7 mm (3.6 in)
1890
68.6 mm (2.7 in)
1891
59.7 mm (2.4 in)
1892
86.4 mm (3.4 in)
1955
46.0 mm (1.8 in)
1956
57.2 mm (2.3 in)
1957
21.6 mm (0.9 in)
1958
37.6 mm (1.5 in)
1959
51.6 mm (2.0 in)
1960
55.9 mm (2.2 in)
1961
96.0 mm (3.8 in)
1962
68.8 mm (2.7 in)
1963
78.7 mm (3.1 in)
1964
61.7 mm (2.4 in)
1965
51.6 mm (2.0 in)
1966
84.3 mm (3.3 in)
1967
61.0 mm (2.4 in)
1968
144.8 mm (5.7 in)
1969
28.4 mm (1.1 in)
1970
12.2 mm (0.5 in)
1971
47.2 mm (1.9 in)
1972
84.3 mm (3.3 in)
1973
62.2 mm (2.4 in)
1974
54.9 mm (2.2 in)
1975
49.8 mm (2.0 in)
1976
34.3 mm (1.4 in)
1977
31.2 mm (1.2 in)
1978
58.7 mm (2.3 in)
1979
65.0 mm (2.6 in)
1980
66.3 mm (2.6 in)
1981
118.6 mm (4.7 in)
1982
50.8 mm (2.0 in)
1983
41.7 mm (1.6 in)
1984
94.7 mm (3.7 in)
1985
45.5 mm (1.8 in)
1986
49.5 mm (1.9 in)
1987
99.1 mm (3.9 in)
1988
72.4 mm (2.9 in)
1989
86.9 mm (3.4 in)
1990
95.0 mm (3.7 in)
1991
71.6 mm (2.8 in)
1992
36.6 mm (1.4 in)
1993
82.0 mm (3.2 in)
1994
94.0 mm (3.7 in)
1995
48.5 mm (1.9 in)
1996
41.7 mm (1.6 in)
1997
61.7 mm (2.4 in)
1998
89.7 mm (3.5 in)
1999
95.8 mm (3.8 in)
2000
58.4 mm (2.3 in)
2001
91.4 mm (3.6 in)
2002
71.1 mm (2.8 in)
2003
107.2 mm (4.2 in)
2004
93.0 mm (3.7 in)
2005
63.5 mm (2.5 in)
2006
84.1 mm (3.3 in)
2007
154.4 mm (6.1 in)
2008
94.2 mm (3.7 in)
2009
61.2 mm (2.4 in)
Wettest five days (Rx5day)
The wettest five days of the year at Independence #1, 1862 to 2009. The record is 208.0 mm (8.2 in) in 2007, marked on the chart; the median year is 104.2 mm (4.1 in).
Wettest five days (Rx5day) at Independence #1 by year
Year
Wettest five days (Rx5day)
1862
n/a
1863
n/a
1864
n/a
1865
n/a
1866
n/a
1867
104.1 mm (4.1 in)
1868
68.6 mm (2.7 in)
1869
143.5 mm (5.6 in)
1870
66.1 mm (2.6 in)
1871
57.2 mm (2.3 in)
1872
105.4 mm (4.1 in)
1873
71.6 mm (2.8 in)
1874
87.6 mm (3.4 in)
1875
142.2 mm (5.6 in)
1876
127.0 mm (5.0 in)
1877
91.4 mm (3.6 in)
1878
117.9 mm (4.6 in)
1879
114.3 mm (4.5 in)
1880
135.9 mm (5.4 in)
1881
148.5 mm (5.8 in)
1882
108.5 mm (4.3 in)
1883
118.2 mm (4.7 in)
1884
207.0 mm (8.1 in)
1885
96.5 mm (3.8 in)
1886
63.6 mm (2.5 in)
1887
196.1 mm (7.7 in)
1888
70.4 mm (2.8 in)
1889
112.0 mm (4.4 in)
1890
99.1 mm (3.9 in)
1891
86.4 mm (3.4 in)
1892
104.2 mm (4.1 in)
1955
13.7 mm (0.5 in)
1956
115.4 mm (4.5 in)
1957
37.9 mm (1.5 in)
1958
50.8 mm (2.0 in)
1959
90.0 mm (3.5 in)
1960
87.4 mm (3.4 in)
1961
123.7 mm (4.9 in)
1962
89.9 mm (3.5 in)
1963
125.0 mm (4.9 in)
1964
79.5 mm (3.1 in)
1965
77.4 mm (3.0 in)
1966
111.7 mm (4.4 in)
1967
106.4 mm (4.2 in)
1968
157.8 mm (6.2 in)
1969
51.9 mm (2.0 in)
1970
19.8 mm (0.8 in)
1971
78.0 mm (3.1 in)
1972
104.9 mm (4.1 in)
1973
94.2 mm (3.7 in)
1974
82.9 mm (3.3 in)
1975
68.3 mm (2.7 in)
1976
72.6 mm (2.9 in)
1977
n/a
1978
82.0 mm (3.2 in)
1979
140.6 mm (5.5 in)
1980
94.0 mm (3.7 in)
1981
167.8 mm (6.6 in)
1982
75.4 mm (3.0 in)
1983
90.7 mm (3.6 in)
1984
105.1 mm (4.1 in)
1985
71.1 mm (2.8 in)
1986
75.4 mm (3.0 in)
1987
114.8 mm (4.5 in)
1988
108.5 mm (4.3 in)
1989
111.3 mm (4.4 in)
1990
128.2 mm (5.0 in)
1991
108.5 mm (4.3 in)
1992
78.0 mm (3.1 in)
1993
178.6 mm (7.0 in)
1994
142.0 mm (5.6 in)
1995
63.4 mm (2.5 in)
1996
64.5 mm (2.5 in)
1997
81.7 mm (3.2 in)
1998
124.7 mm (4.9 in)
1999
144.8 mm (5.7 in)
2000
95.0 mm (3.7 in)
2001
128.5 mm (5.1 in)
2002
113.8 mm (4.5 in)
2003
120.1 mm (4.7 in)
2004
158.0 mm (6.2 in)
2005
124.0 mm (4.9 in)
2006
101.4 mm (4.0 in)
2007
208.0 mm (8.2 in)
2008
128.5 mm (5.1 in)
2009
97.8 mm (3.9 in)
Longest dry spell (CDD)
The longest dry spell of the year at Independence #1, 1862 to 2009. The record is 41 days in 2003, marked on the chart; the median year is 23 days.
Longest dry spell (CDD) at Independence #1 by year
Year
Longest dry spell (CDD)
1862
n/a
1863
n/a
1864
n/a
1865
n/a
1866
n/a
1867
34 days
1868
21 days
1869
25 days
1870
30 days
1871
33 days
1872
16 days
1873
34 days
1874
25 days
1875
16 days
1876
17 days
1877
17 days
1878
21 days
1879
26 days
1880
27 days
1881
16 days
1882
25 days
1883
18 days
1884
17 days
1885
31 days
1886
24 days
1887
16 days
1888
32 days
1889
37 days
1890
29 days
1891
20 days
1892
36 days
1955
21 days
1956
21 days
1957
29 days
1958
26 days
1959
24 days
1960
17 days
1961
16 days
1962
19 days
1963
22 days
1964
35 days
1965
20 days
1966
24 days
1967
24 days
1968
36 days
1969
34 days
1970
18 days
1971
38 days
1972
22 days
1973
20 days
1974
17 days
1975
23 days
1976
19 days
1977
1 day
1978
20 days
1979
30 days
1980
25 days
1981
25 days
1982
17 days
1983
22 days
1984
27 days
1985
19 days
1986
23 days
1987
28 days
1988
38 days
1989
21 days
1990
19 days
1991
19 days
1992
21 days
1993
22 days
1994
23 days
1995
29 days
1996
22 days
1997
14 days
1998
20 days
1999
24 days
2000
21 days
2001
18 days
2002
30 days
2003
41 days
2004
34 days
2005
28 days
2006
17 days
2007
30 days
2008
14 days
2009
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
25 years with a frost
Across 25 years with a frost, the median last spring frost at Independence #1 falls on 25 April and the median first autumn frost on 4 October, which leaves a median of 162 days between them.
Fitted over all years, the growing season changes by -0.9 days per decade at this station.
Frost dates and growing season at Independence #1
Measure
Median, all years
Earliest period
Recent period (1885 to 2008)
Recent against earliest
Fitted trend
Last spring frost
25 April
n/a
25 April
n/a
+1.2 days per decade
First autumn frost
4 October
n/a
4 October
n/a
+0.3 days per decade
Growing days
162 days
n/a
162 days
n/a
-0.9 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
56 years, 1869 to 2008
A day with at least 71.4 mm (2.8 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 Independence #1: the daily rain expected about once in a given number of years
Expected about once in
A day with at least
Note
2 years
71.4 mm (2.8 in)
5 years
93.8 mm (3.7 in)
10 years
107.3 mm (4.2 in)
25 years
123.0 mm (4.8 in)
50 years
133.6 mm (5.3 in)
100 years
143.5 mm (5.6 in)
Longer than the 56 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, 56 years of values from 1869 to 2008.
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: 144.8 mm (5.7 in) in 1968; 123.2 mm (4.9 in) in 1869; 118.6 mm (4.7 in) in 1981.
Download the Data
Data for Independence #1 standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Independence #1 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 2026-10-14 (14 October 2026). Records are computed by this site and are not official.