Record envelope, standing records and threshold days for Stockport (USC00137955), Iowa, United States, with 48 years of record.
Key Facts for Stockport
Stockport (USC00137955) is a weather station in Iowa, United States at 40.83 latitude and -91.83 longitude, 229 m (751 ft) above sea level.
The station reports from 1901 to 1948, 48 years of record.
1,464 records set at Stockport still stand.
Records are tracked for tmax, tmin, prcp, snow: an element needs 30 years of data to be eligible.
Stockport set a daily record precipitation of 33.3 mm (1.3 in) on 27 February 1948.
About the Station
Location: Iowa, United States, 40.83 latitude, -91.83 longitude.
Elevation: 229 m (751 ft).
Period of record: 1901 to 1948, 48 years.
Eligible elements: tmax, tmin, prcp, snow.
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 Stockport. 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 Stockport, with 2026 drawn through them
Month
Highest record high
Lowest record low
2026 highest maximum
2026 lowest minimum
Jan
20.6 C (69.1 F)
-37.2 C (-35.0 F)
n/a
n/a
Feb
24.4 C (75.9 F)
-33.3 C (-27.9 F)
n/a
n/a
Mar
31.1 C (88.0 F)
-25.6 C (-14.1 F)
n/a
n/a
Apr
32.8 C (91.0 F)
-16.1 C (3.0 F)
n/a
n/a
May
40.0 C (104.0 F)
-3.9 C (25.0 F)
n/a
n/a
Jun
40.0 C (104.0 F)
3.3 C (37.9 F)
n/a
n/a
Jul
46.1 C (115.0 F)
5.6 C (42.1 F)
n/a
n/a
Aug
45.6 C (114.1 F)
1.1 C (34.0 F)
n/a
n/a
Sep
38.3 C (100.9 F)
-5.0 C (23.0 F)
n/a
n/a
Oct
33.9 C (93.0 F)
-17.8 C (0.0 F)
n/a
n/a
Nov
27.8 C (82.0 F)
-22.2 C (-8.0 F)
n/a
n/a
Dec
20.6 C (69.1 F)
-33.9 C (-29.0 F)
n/a
n/a
Which Years Hold Standing Records
1,464 standing records
Year with most
1,464 records at Stockport still stand. 1936 holds the most, with 94.
Standing records at Stockport by the year they were set
Year set
Standing records
1904
14
1905
24
1906
22
1907
27
1908
20
1909
45
1910
44
1911
44
1912
47
1913
45
1914
35
1915
40
1916
30
1917
37
1918
31
1919
24
1920
28
1921
20
1922
23
1923
22
1924
44
1925
48
1926
30
1927
34
1928
39
1929
34
1930
50
1931
35
1932
36
1933
31
1934
57
1935
23
1936
94
1937
28
1938
32
1939
28
1940
33
1941
26
1942
25
1943
20
1944
21
1945
18
1946
29
1947
25
1948
2
All-Time Record Progression
5 new records
5 all-time records were set at Stockport between 19 July 1934 and 14 August 1936. Each dot is a new record.
When Stockport set new all-time records
Date
Kind
Detail
1934-07-19
Record high maximum temperature
Record high maximum temperature 43.9 C (111.0 F)
1934-07-20
Record high maximum temperature
Record high maximum temperature 44.4 C (111.9 F)
1934-08-08
Record high maximum temperature
Record high maximum temperature 45.6 C (114.1 F)
1936-07-15
Record high maximum temperature
Record high maximum temperature 46.1 C (115.0 F)
1936-08-14
Record high minimum temperature
Record high minimum temperature 28.3 C (82.9 F)
Wettest Day of Each Month
Jun: 270.0 mm (10.6 in)
The wettest day on record for each calendar month at Stockport. The most was 270.0 mm (10.6 in) on 10 June 1905.
Record daily precipitation for each month at Stockport
Month
Record daily precipitation (mm)
Date
Jan
44.5 mm (1.8 in)
20 January 1904
Feb
36.8 mm (1.4 in)
17 February 1911
Mar
51.3 mm (2.0 in)
24 March 1920
Apr
67.6 mm (2.7 in)
19 April 1929
May
77.5 mm (3.1 in)
13 May 1908
Jun
270.0 mm (10.6 in)
10 June 1905
Jul
150.4 mm (5.9 in)
3 July 1931
Aug
112.0 mm (4.4 in)
3 August 1928
Sep
92.2 mm (3.6 in)
26 September 1933
Oct
67.8 mm (2.7 in)
9 October 1936
Nov
58.7 mm (2.3 in)
3 November 1934
Dec
77.2 mm (3.0 in)
26 December 1942
Period of Record Coverage
1904 to 1948
Complete yearUnder 90 percent of days
45 years of record at Stockport, 1904 to 1948. 3 years have data for under 90 percent of days and are left out of rankings: 1904, 1905, 1948.
Cooler than the station meanWarmer than the station mean
One stripe for each of 39 complete years at Stockport, 1906 to 1947. Blue stripes are years cooler than the station's own mean of 10.4 C (50.7 F); red stripes are warmer. The coolest year was 1917, at 8.1 C (46.5 F), and the warmest was 1931, at 12.2 C (53.9 F). The strongest colour marks a difference of 2.3 C (4.1 F).
Annual mean temperature at Stockport as warming stripes, 1906 to 1947
Year
Annual mean temperature
Difference from the station mean
1906
10.7 C
+0.29 C
1907
10.0 C
-0.35 C
1908
10.9 C
+0.48 C
1909
9.8 C
-0.56 C
1912
9.2 C
-1.17 C
1913
11.0 C
+0.62 C
1914
10.6 C
+0.20 C
1915
9.7 C
-0.67 C
1916
9.6 C
-0.76 C
1917
8.1 C
-2.29 C
1918
10.2 C
-0.20 C
1919
10.2 C
-0.22 C
1920
9.8 C
-0.58 C
1922
10.8 C
+0.45 C
1923
10.2 C
-0.16 C
1924
8.9 C
-1.45 C
1925
9.9 C
-0.43 C
1926
9.9 C
-0.51 C
1927
10.6 C
+0.19 C
1928
10.5 C
+0.10 C
1929
9.2 C
-1.18 C
1930
11.0 C
+0.65 C
1931
12.2 C
+1.78 C
1932
10.2 C
-0.21 C
1933
11.5 C
+1.10 C
1934
11.7 C
+1.33 C
1935
9.8 C
-0.61 C
1936
10.5 C
+0.13 C
1937
9.7 C
-0.64 C
1938
12.0 C
+1.59 C
1939
11.4 C
+1.02 C
1940
9.8 C
-0.57 C
1941
11.8 C
+1.45 C
1942
10.6 C
+0.24 C
1943
9.9 C
-0.43 C
1944
10.8 C
+0.40 C
1945
9.8 C
-0.57 C
1946
11.7 C
+1.29 C
1947
10.6 C
+0.26 C
The annual mean temperature here has risen by 0.24 C (0.02 to 0.47) per decade over 1906 to 1947. In Fahrenheit: 0.44 F (0.03 to 0.85) per decade. The slope is a straight line fitted to 39 complete years; the brackets give its 95 percent interval.
Fitted temperature trends per decade at Stockport
Measure
Per decade (C)
Per decade (F)
Period
Complete years
Reading
Annual mean temperature
0.24 C (0.02 to 0.47) per decade
0.44 F (0.03 to 0.85) per decade
1906 to 1947
39
Rise
Mean daily maximum
0.2 C (-0.1 to 0.5) per decade
0.4 F (-0.1 to 0.9) per decade
1906 to 1947
39
Not clearly different from zero
Mean daily minimum
0.27 C (0.04 to 0.51) per decade
0.5 F (0.1 to 0.9) per decade
1906 to 1947
39
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
1901 to 1948
Yearly extremes at Stockport: the record and the median year
Measure
Record
Year of the record
Median year
Years with a value
Hottest day (TXx)
46.1 C (115.0 F)
1936
37.2 C (99.0 F)
45
Coldest night (TNn)
-37.2 C (-35.0 F)
1930
-26.7 C (-16.1 F)
45
Wettest day (Rx1day)
270.0 mm (10.6 in)
1905
61.6 mm (2.4 in)
48
Wettest five days (Rx5day)
270.0 mm (10.6 in)
1905
95.5 mm (3.8 in)
48
Longest dry spell (CDD)
41 days
1939
24 days
48
Hottest day (TXx)
The hottest day of the year at Stockport, 1901 to 1948. The record is 46.1 C (115.0 F) in 1936, marked on the chart; the median year is 37.2 C (99.0 F).
Hottest day (TXx) at Stockport by year
Year
Hottest day (TXx)
1901
n/a
1902
n/a
1903
n/a
1904
31.7 C (89.1 F)
1905
33.9 C (93.0 F)
1906
35.0 C (95.0 F)
1907
32.8 C (91.0 F)
1908
33.9 C (93.0 F)
1909
35.0 C (95.0 F)
1910
38.3 C (100.9 F)
1911
42.2 C (108.0 F)
1912
37.2 C (99.0 F)
1913
40.6 C (105.1 F)
1914
40.0 C (104.0 F)
1915
33.9 C (93.0 F)
1916
39.4 C (102.9 F)
1917
37.2 C (99.0 F)
1918
40.0 C (104.0 F)
1919
38.9 C (102.0 F)
1920
35.0 C (95.0 F)
1921
37.2 C (99.0 F)
1922
36.1 C (97.0 F)
1923
37.2 C (99.0 F)
1924
35.0 C (95.0 F)
1925
38.3 C (100.9 F)
1926
35.6 C (96.1 F)
1927
37.8 C (100.0 F)
1928
36.1 C (97.0 F)
1929
36.7 C (98.1 F)
1930
42.8 C (109.0 F)
1931
38.3 C (100.9 F)
1932
35.6 C (96.1 F)
1933
38.3 C (100.9 F)
1934
45.6 C (114.1 F)
1935
35.6 C (96.1 F)
1936
46.1 C (115.0 F)
1937
40.0 C (104.0 F)
1938
38.9 C (102.0 F)
1939
37.2 C (99.0 F)
1940
41.1 C (106.0 F)
1941
38.9 C (102.0 F)
1942
36.1 C (97.0 F)
1943
35.0 C (95.0 F)
1944
35.6 C (96.1 F)
1945
37.8 C (100.0 F)
1946
37.2 C (99.0 F)
1947
40.6 C (105.1 F)
1948
16.1 C (61.0 F)
Coldest night (TNn)
The coldest night of the year at Stockport, 1901 to 1948. The record is -37.2 C (-35.0 F) in 1930, marked on the chart; the median year is -26.7 C (-16.1 F).
Coldest night (TNn) at Stockport by year
Year
Coldest night (TNn)
1901
n/a
1902
n/a
1903
n/a
1904
-18.3 C (-0.9 F)
1905
-32.2 C (-26.0 F)
1906
-20.6 C (-5.1 F)
1907
-25.0 C (-13.0 F)
1908
-21.1 C (-6.0 F)
1909
-30.0 C (-22.0 F)
1910
-31.7 C (-25.1 F)
1911
-24.4 C (-11.9 F)
1912
-31.7 C (-25.1 F)
1913
-24.4 C (-11.9 F)
1914
-30.6 C (-23.1 F)
1915
-29.4 C (-20.9 F)
1916
-28.9 C (-20.0 F)
1917
-30.0 C (-22.0 F)
1918
-32.2 C (-26.0 F)
1919
-31.1 C (-24.0 F)
1920
-27.8 C (-18.0 F)
1921
-25.6 C (-14.1 F)
1922
-22.2 C (-8.0 F)
1923
-23.9 C (-11.0 F)
1924
-33.9 C (-29.0 F)
1925
-23.9 C (-11.0 F)
1926
-24.4 C (-11.9 F)
1927
-32.8 C (-27.0 F)
1928
-22.8 C (-9.0 F)
1929
-27.8 C (-18.0 F)
1930
-37.2 C (-35.0 F)
1931
-18.9 C (-2.0 F)
1932
-30.0 C (-22.0 F)
1933
-29.4 C (-20.9 F)
1934
-31.7 C (-25.1 F)
1935
-23.9 C (-11.0 F)
1936
-33.3 C (-27.9 F)
1937
-20.6 C (-5.1 F)
1938
-20.6 C (-5.1 F)
1939
-20.6 C (-5.1 F)
1940
-27.2 C (-17.0 F)
1941
-18.3 C (-0.9 F)
1942
-26.7 C (-16.1 F)
1943
-26.1 C (-15.0 F)
1944
-23.9 C (-11.0 F)
1945
-27.8 C (-18.0 F)
1946
-20.0 C (-4.0 F)
1947
-30.6 C (-23.1 F)
1948
-21.1 C (-6.0 F)
Wettest day (Rx1day)
The wettest day of the year at Stockport, 1901 to 1948. The record is 270.0 mm (10.6 in) in 1905, marked on the chart; the median year is 61.6 mm (2.4 in).
Wettest day (Rx1day) at Stockport by year
Year
Wettest day (Rx1day)
1901
8.9 mm (0.35 in)
1902
111.8 mm (4.4 in)
1903
101.9 mm (4.0 in)
1904
49.8 mm (2.0 in)
1905
270.0 mm (10.6 in)
1906
40.6 mm (1.6 in)
1907
52.1 mm (2.1 in)
1908
77.5 mm (3.1 in)
1909
117.3 mm (4.6 in)
1910
39.4 mm (1.6 in)
1911
47.0 mm (1.9 in)
1912
51.3 mm (2.0 in)
1913
37.6 mm (1.5 in)
1914
47.2 mm (1.9 in)
1915
82.0 mm (3.2 in)
1916
63.2 mm (2.5 in)
1917
51.6 mm (2.0 in)
1918
52.8 mm (2.1 in)
1919
52.8 mm (2.1 in)
1920
71.6 mm (2.8 in)
1921
52.6 mm (2.1 in)
1922
67.3 mm (2.6 in)
1923
41.9 mm (1.6 in)
1924
50.8 mm (2.0 in)
1925
74.2 mm (2.9 in)
1926
56.6 mm (2.2 in)
1927
65.0 mm (2.6 in)
1928
112.0 mm (4.4 in)
1929
67.6 mm (2.7 in)
1930
70.6 mm (2.8 in)
1931
150.4 mm (5.9 in)
1932
59.9 mm (2.4 in)
1933
92.2 mm (3.6 in)
1934
58.7 mm (2.3 in)
1935
42.4 mm (1.7 in)
1936
67.8 mm (2.7 in)
1937
106.2 mm (4.2 in)
1938
47.8 mm (1.9 in)
1939
49.8 mm (2.0 in)
1940
77.7 mm (3.1 in)
1941
64.8 mm (2.6 in)
1942
77.2 mm (3.0 in)
1943
42.9 mm (1.7 in)
1944
63.8 mm (2.5 in)
1945
53.6 mm (2.1 in)
1946
122.4 mm (4.8 in)
1947
76.2 mm (3.0 in)
1948
33.3 mm (1.3 in)
Wettest five days (Rx5day)
The wettest five days of the year at Stockport, 1901 to 1948. The record is 270.0 mm (10.6 in) in 1905, marked on the chart; the median year is 95.5 mm (3.8 in).
Wettest five days (Rx5day) at Stockport by year
Year
Wettest five days (Rx5day)
1901
12.7 mm (0.5 in)
1902
169.5 mm (6.7 in)
1903
112.8 mm (4.4 in)
1904
61.0 mm (2.4 in)
1905
270.0 mm (10.6 in)
1906
43.2 mm (1.7 in)
1907
83.6 mm (3.3 in)
1908
109.3 mm (4.3 in)
1909
182.8 mm (7.2 in)
1910
52.6 mm (2.1 in)
1911
109.3 mm (4.3 in)
1912
68.5 mm (2.7 in)
1913
72.4 mm (2.9 in)
1914
64.8 mm (2.6 in)
1915
129.7 mm (5.1 in)
1916
97.7 mm (3.8 in)
1917
128.3 mm (5.1 in)
1918
97.0 mm (3.8 in)
1919
73.6 mm (2.9 in)
1920
89.4 mm (3.5 in)
1921
67.6 mm (2.7 in)
1922
115.8 mm (4.6 in)
1923
71.9 mm (2.8 in)
1924
133.3 mm (5.2 in)
1925
119.7 mm (4.7 in)
1926
105.0 mm (4.1 in)
1927
108.7 mm (4.3 in)
1928
189.7 mm (7.5 in)
1929
76.3 mm (3.0 in)
1930
114.5 mm (4.5 in)
1931
152.9 mm (6.0 in)
1932
102.5 mm (4.0 in)
1933
94.0 mm (3.7 in)
1934
78.2 mm (3.1 in)
1935
80.8 mm (3.2 in)
1936
108.9 mm (4.3 in)
1937
120.9 mm (4.8 in)
1938
87.9 mm (3.5 in)
1939
118.6 mm (4.7 in)
1940
82.8 mm (3.3 in)
1941
80.5 mm (3.2 in)
1942
80.5 mm (3.2 in)
1943
99.3 mm (3.9 in)
1944
81.3 mm (3.2 in)
1945
75.4 mm (3.0 in)
1946
175.0 mm (6.9 in)
1947
82.3 mm (3.2 in)
1948
36.3 mm (1.4 in)
Longest dry spell (CDD)
The longest dry spell of the year at Stockport, 1901 to 1948. The record is 41 days in 1939, marked on the chart; the median year is 24 days.
Longest dry spell (CDD) at Stockport by year
Year
Longest dry spell (CDD)
1901
18 days
1902
28 days
1903
28 days
1904
30 days
1905
19 days
1906
22 days
1907
28 days
1908
26 days
1909
27 days
1910
28 days
1911
19 days
1912
28 days
1913
35 days
1914
29 days
1915
21 days
1916
20 days
1917
36 days
1918
14 days
1919
36 days
1920
16 days
1921
14 days
1922
22 days
1923
18 days
1924
22 days
1925
22 days
1926
21 days
1927
20 days
1928
19 days
1929
26 days
1930
29 days
1931
34 days
1932
17 days
1933
29 days
1934
30 days
1935
15 days
1936
23 days
1937
19 days
1938
24 days
1939
41 days
1940
26 days
1941
20 days
1942
17 days
1943
27 days
1944
26 days
1945
18 days
1946
22 days
1947
28 days
1948
32 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
39 years with a frost
Across 39 years with a frost, the median last spring frost at Stockport falls on 1 May and the median first autumn frost on 9 October, which leaves a median of 160 days between them.
Fitted over all years, the growing season changes by +6.6 days per decade at this station.
Frost dates and growing season at Stockport
Measure
Median, all years
Earliest period
Recent period (1917 to 1947)
Recent against earliest
Fitted trend
Last spring frost
1 May
n/a
27 April
n/a
-2.2 days per decade
First autumn frost
9 October
n/a
10 October
n/a
+4.5 days per decade
Growing days
160 days
n/a
162 days
n/a
+6.6 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
40 years, 1902 to 1947
A day with at least 61.8 mm (2.4 in) of rain is expected about once in 2 years. A day with at least 177.2 mm (7.0 in) of rain is expected about once in 100 years.
Rainfall return levels at Stockport: the daily rain expected about once in a given number of years
Expected about once in
A day with at least
Note
2 years
61.8 mm (2.4 in)
5 years
84.7 mm (3.3 in)
10 years
102.7 mm (4.0 in)
25 years
129.0 mm (5.1 in)
50 years
151.7 mm (6.0 in)
Longer than the 40 years of record
100 years
177.2 mm (7.0 in)
Longer than the 40 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, 40 years of values from 1902 to 1947.
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: 150.4 mm (5.9 in) in 1931; 122.4 mm (4.8 in) in 1946; 117.3 mm (4.6 in) in 1909.
Download the Data
Data for Stockport standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Stockport 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.