Record envelope, standing records and threshold days for Iola (USC00143989), Kansas, United States, with 54 years of record.
Key Facts for Iola
Iola (USC00143989) is a weather station in Kansas, United States at 37.92 latitude and -95.40 longitude, 293 m (961 ft) above sea level.
The station reports from 1905 to 1958, 54 years of record.
1,464 records set at Iola still stand.
Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
Iola set a daily record snowfall of 10.2 cm (4.0 in) on 31 December 1958.
About the Station
Location: Kansas, United States, 37.92 latitude, -95.40 longitude.
Elevation: 293 m (961 ft).
Period of record: 1905 to 1958, 54 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 Iola. 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 Iola, with 2026 drawn through them
Month
Highest record high
Lowest record low
2026 highest maximum
2026 lowest minimum
Jan
24.4 C (75.9 F)
-28.9 C (-20.0 F)
n/a
n/a
Feb
27.8 C (82.0 F)
-23.9 C (-11.0 F)
n/a
n/a
Mar
34.4 C (93.9 F)
-19.4 C (-2.9 F)
n/a
n/a
Apr
35.6 C (96.1 F)
-8.9 C (16.0 F)
n/a
n/a
May
36.7 C (98.1 F)
-2.2 C (28.0 F)
n/a
n/a
Jun
41.1 C (106.0 F)
6.1 C (43.0 F)
n/a
n/a
Jul
47.2 C (117.0 F)
9.4 C (48.9 F)
n/a
n/a
Aug
43.9 C (111.0 F)
6.7 C (44.1 F)
n/a
n/a
Sep
42.8 C (109.0 F)
0.0 C (32.0 F)
n/a
n/a
Oct
35.6 C (96.1 F)
-8.9 C (16.0 F)
n/a
n/a
Nov
29.4 C (84.9 F)
-15.6 C (3.9 F)
n/a
n/a
Dec
23.9 C (75.0 F)
-22.2 C (-8.0 F)
n/a
n/a
Which Years Hold Standing Records
1,464 standing records
Year with most
1,464 records at Iola still stand. 1936 holds the most, with 66.
Standing records at Iola by the year they were set
Year set
Standing records
1905
4
1906
23
1907
44
1908
20
1909
23
1910
22
1911
61
1912
31
1913
40
1914
22
1915
26
1916
29
1917
43
1918
33
1919
14
1920
19
1921
10
1922
16
1923
14
1924
31
1925
47
1926
15
1927
27
1928
20
1929
25
1930
45
1931
32
1932
31
1933
30
1934
28
1935
17
1936
66
1937
22
1938
35
1939
39
1940
29
1941
9
1942
14
1943
23
1944
15
1945
11
1946
32
1947
22
1948
16
1949
17
1950
34
1951
24
1952
40
1953
35
1954
46
1955
17
1956
41
1957
12
1958
23
All-Time Record Progression
6 new records
6 all-time records were set at Iola between 14 July 1936 and 14 July 1954. Each dot is a new record.
When Iola set new all-time records
Date
Kind
Detail
1936-07-14
Record high maximum temperature
Record high maximum temperature 42.8 C (109.0 F)
1936-07-15
Record high maximum temperature
Record high maximum temperature 43.3 C (109.9 F)
1936-07-18
Record high maximum temperature
Record high maximum temperature 45.6 C (114.1 F)
1949-01-30
Record low minimum temperature
Record low minimum temperature -28.9 C (-20.0 F)
1954-07-13
Record high maximum temperature
Record high maximum temperature 46.7 C (116.1 F)
1954-07-14
Record high maximum temperature
Record high maximum temperature 47.2 C (117.0 F)
Wettest Day of Each Month
Sep: 172.2 mm (6.8 in)
The wettest day on record for each calendar month at Iola. The most was 172.2 mm (6.8 in) on 12 September 1926.
Record daily precipitation for each month at Iola
Month
Record daily precipitation (mm)
Date
Jan
53.3 mm (2.1 in)
16 January 1907
Feb
45.5 mm (1.8 in)
22 February 1915
Mar
77.0 mm (3.0 in)
13 March 1922
Apr
89.7 mm (3.5 in)
17 April 1940
May
109.0 mm (4.3 in)
17 May 1943
Jun
110.2 mm (4.3 in)
1 June 1941
Jul
80.0 mm (3.1 in)
18 July 1917
Aug
82.8 mm (3.3 in)
8 August 1927
Sep
172.2 mm (6.8 in)
12 September 1926
Oct
96.0 mm (3.8 in)
21 October 1908
Nov
140.5 mm (5.5 in)
16 November 1928
Dec
48.8 mm (1.9 in)
9 December 1911
Period of Record Coverage
1905 to 1958
Complete yearUnder 90 percent of days
54 years of record at Iola, 1905 to 1958. 1 years have data for under 90 percent of days and are left out of rankings: 1905.
Cooler than the station meanWarmer than the station mean
One stripe for each of 52 complete years at Iola, 1906 to 1958. Blue stripes are years cooler than the station's own mean of 13.9 C (57.0 F); red stripes are warmer. The coolest year was 1917, at 12.1 C (53.8 F), and the warmest was 1954, at 16.1 C (61.1 F). The strongest colour marks a difference of 2.3 C (4.1 F).
Annual mean temperature at Iola as warming stripes, 1906 to 1958
Year
Annual mean temperature
Difference from the station mean
1906
13.0 C
-0.88 C
1907
13.4 C
-0.47 C
1908
13.9 C
+0.04 C
1909
13.3 C
-0.58 C
1910
13.4 C
-0.47 C
1911
14.0 C
+0.13 C
1912
12.1 C
-1.76 C
1913
13.6 C
-0.27 C
1914
13.6 C
-0.28 C
1915
12.8 C
-1.10 C
1916
13.0 C
-0.86 C
1917
12.1 C
-1.80 C
1918
13.5 C
-0.40 C
1919
13.3 C
-0.59 C
1920
13.2 C
-0.73 C
1921
15.0 C
+1.15 C
1922
14.0 C
+0.15 C
1923
13.8 C
-0.06 C
1924
12.4 C
-1.50 C
1925
13.7 C
-0.18 C
1926
13.1 C
-0.82 C
1927
13.4 C
-0.54 C
1928
13.7 C
-0.21 C
1929
12.5 C
-1.36 C
1930
13.7 C
-0.19 C
1932
14.0 C
+0.07 C
1933
15.3 C
+1.42 C
1934
15.2 C
+1.35 C
1935
14.1 C
+0.17 C
1936
14.9 C
+0.97 C
1937
13.4 C
-0.52 C
1938
15.5 C
+1.59 C
1939
15.4 C
+1.54 C
1940
13.2 C
-0.73 C
1941
14.7 C
+0.84 C
1942
14.0 C
+0.10 C
1943
13.9 C
+0.02 C
1944
14.3 C
+0.40 C
1945
13.5 C
-0.38 C
1946
15.7 C
+1.81 C
1947
14.2 C
+0.33 C
1948
13.9 C
+0.04 C
1949
14.0 C
+0.12 C
1950
13.3 C
-0.55 C
1951
13.0 C
-0.94 C
1952
14.7 C
+0.78 C
1953
15.3 C
+1.36 C
1954
16.1 C
+2.25 C
1955
14.5 C
+0.65 C
1956
15.2 C
+1.28 C
1957
14.2 C
+0.29 C
1958
13.5 C
-0.44 C
The annual mean temperature here has risen by 0.3 C (0.1 to 0.4) per decade over 1906 to 1958. In Fahrenheit: 0.5 F (0.3 to 0.8) per decade. The slope is a straight line fitted to 52 complete years; the brackets give its 95 percent interval.
Fitted temperature trends per decade at Iola
Measure
Per decade (C)
Per decade (F)
Period
Complete years
Reading
Annual mean temperature
0.3 C (0.1 to 0.4) per decade
0.5 F (0.3 to 0.8) per decade
1906 to 1958
52
Rise
Mean daily maximum
0.4 C (0.2 to 0.6) per decade
0.7 F (0.4 to 1.1) per decade
1906 to 1958
52
Rise
Mean daily minimum
0.2 C (0.1 to 0.3) per decade
0.3 F (0.1 to 0.6) per decade
1906 to 1958
52
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
1905 to 1958
Yearly extremes at Iola: the record and the median year
Measure
Record
Year of the record
Median year
Years with a value
Hottest day (TXx)
47.2 C (117.0 F)
1954
39.2 C (102.5 F)
54
Coldest night (TNn)
-28.9 C (-20.0 F)
1949
-19.4 C (-2.9 F)
54
Wettest day (Rx1day)
172.2 mm (6.8 in)
1926
72.0 mm (2.8 in)
54
Wettest five days (Rx5day)
235.7 mm (9.3 in)
1943
113.3 mm (4.5 in)
54
Longest dry spell (CDD)
49 days
1955
26 days
54
Hottest day (TXx)
The hottest day of the year at Iola, 1905 to 1958. The record is 47.2 C (117.0 F) in 1954, marked on the chart; the median year is 39.2 C (102.5 F).
Hottest day (TXx) at Iola by year
Year
Hottest day (TXx)
1905
36.7 C (98.1 F)
1906
34.4 C (93.9 F)
1907
38.3 C (100.9 F)
1908
36.1 C (97.0 F)
1909
40.0 C (104.0 F)
1910
40.6 C (105.1 F)
1911
40.6 C (105.1 F)
1912
37.8 C (100.0 F)
1913
40.6 C (105.1 F)
1914
38.3 C (100.9 F)
1915
34.4 C (93.9 F)
1916
38.9 C (102.0 F)
1917
39.4 C (102.9 F)
1918
41.7 C (107.1 F)
1919
38.3 C (100.9 F)
1920
37.2 C (99.0 F)
1921
37.2 C (99.0 F)
1922
40.6 C (105.1 F)
1923
40.0 C (104.0 F)
1924
35.6 C (96.1 F)
1925
40.0 C (104.0 F)
1926
40.0 C (104.0 F)
1927
38.9 C (102.0 F)
1928
37.8 C (100.0 F)
1929
38.9 C (102.0 F)
1930
42.2 C (108.0 F)
1931
38.3 C (100.9 F)
1932
38.3 C (100.9 F)
1933
41.1 C (106.0 F)
1934
42.2 C (108.0 F)
1935
38.9 C (102.0 F)
1936
45.6 C (114.1 F)
1937
41.7 C (107.1 F)
1938
39.4 C (102.9 F)
1939
44.4 C (111.9 F)
1940
37.8 C (100.0 F)
1941
40.6 C (105.1 F)
1942
36.1 C (97.0 F)
1943
39.4 C (102.9 F)
1944
38.9 C (102.0 F)
1945
38.3 C (100.9 F)
1946
43.9 C (111.0 F)
1947
42.8 C (109.0 F)
1948
37.2 C (99.0 F)
1949
36.7 C (98.1 F)
1950
36.1 C (97.0 F)
1951
38.9 C (102.0 F)
1952
42.2 C (108.0 F)
1953
41.1 C (106.0 F)
1954
47.2 C (117.0 F)
1955
40.0 C (104.0 F)
1956
43.9 C (111.0 F)
1957
39.4 C (102.9 F)
1958
38.9 C (102.0 F)
Coldest night (TNn)
The coldest night of the year at Iola, 1905 to 1958. The record is -28.9 C (-20.0 F) in 1949, marked on the chart; the median year is -19.4 C (-2.9 F).
Coldest night (TNn) at Iola by year
Year
Coldest night (TNn)
1905
-11.1 C (12.0 F)
1906
-17.2 C (1.0 F)
1907
-16.7 C (1.9 F)
1908
-15.0 C (5.0 F)
1909
-21.1 C (-6.0 F)
1910
-19.4 C (-2.9 F)
1911
-22.2 C (-8.0 F)
1912
-26.7 C (-16.1 F)
1913
-19.4 C (-2.9 F)
1914
-18.9 C (-2.0 F)
1915
-20.0 C (-4.0 F)
1916
-24.4 C (-11.9 F)
1917
-22.8 C (-9.0 F)
1918
-27.8 C (-18.0 F)
1919
-23.3 C (-9.9 F)
1920
-17.2 C (1.0 F)
1921
-13.3 C (8.1 F)
1922
-16.1 C (3.0 F)
1923
-16.1 C (3.0 F)
1924
-23.3 C (-9.9 F)
1925
-19.4 C (-2.9 F)
1926
-16.7 C (1.9 F)
1927
-21.7 C (-7.1 F)
1928
-24.4 C (-11.9 F)
1929
-20.0 C (-4.0 F)
1930
-27.8 C (-18.0 F)
1931
-13.3 C (8.1 F)
1932
-20.6 C (-5.1 F)
1933
-23.9 C (-11.0 F)
1934
-20.0 C (-4.0 F)
1935
-20.6 C (-5.1 F)
1936
-20.6 C (-5.1 F)
1937
-15.6 C (3.9 F)
1938
-16.7 C (1.9 F)
1939
-20.6 C (-5.1 F)
1940
-23.3 C (-9.9 F)
1941
-13.9 C (7.0 F)
1942
-18.3 C (-0.9 F)
1943
-26.1 C (-15.0 F)
1944
-16.7 C (1.9 F)
1945
-22.2 C (-8.0 F)
1946
-17.2 C (1.0 F)
1947
-25.6 C (-14.1 F)
1948
-21.7 C (-7.1 F)
1949
-28.9 C (-20.0 F)
1950
-19.4 C (-2.9 F)
1951
-21.7 C (-7.1 F)
1952
-13.3 C (8.1 F)
1953
-17.2 C (1.0 F)
1954
-17.2 C (1.0 F)
1955
-16.7 C (1.9 F)
1956
-17.8 C (0.0 F)
1957
-15.6 C (3.9 F)
1958
-17.8 C (0.0 F)
Wettest day (Rx1day)
The wettest day of the year at Iola, 1905 to 1958. The record is 172.2 mm (6.8 in) in 1926, marked on the chart; the median year is 72.0 mm (2.8 in).
Wettest day (Rx1day) at Iola by year
Year
Wettest day (Rx1day)
1905
88.9 mm (3.5 in)
1906
53.3 mm (2.1 in)
1907
54.4 mm (2.1 in)
1908
96.0 mm (3.8 in)
1909
54.9 mm (2.2 in)
1910
64.0 mm (2.5 in)
1911
69.6 mm (2.7 in)
1912
78.2 mm (3.1 in)
1913
51.6 mm (2.0 in)
1914
76.7 mm (3.0 in)
1915
146.3 mm (5.8 in)
1916
93.5 mm (3.7 in)
1917
80.0 mm (3.1 in)
1918
55.6 mm (2.2 in)
1919
42.9 mm (1.7 in)
1920
68.3 mm (2.7 in)
1921
76.7 mm (3.0 in)
1922
77.0 mm (3.0 in)
1923
64.0 mm (2.5 in)
1924
72.6 mm (2.9 in)
1925
89.4 mm (3.5 in)
1926
172.2 mm (6.8 in)
1927
94.0 mm (3.7 in)
1928
140.5 mm (5.5 in)
1929
72.6 mm (2.9 in)
1930
73.7 mm (2.9 in)
1931
51.8 mm (2.0 in)
1932
41.1 mm (1.6 in)
1933
52.6 mm (2.1 in)
1934
74.2 mm (2.9 in)
1935
107.7 mm (4.2 in)
1936
57.4 mm (2.3 in)
1937
71.4 mm (2.8 in)
1938
57.9 mm (2.3 in)
1939
44.7 mm (1.8 in)
1940
89.7 mm (3.5 in)
1941
149.6 mm (5.9 in)
1942
73.2 mm (2.9 in)
1943
109.0 mm (4.3 in)
1944
86.4 mm (3.4 in)
1945
89.9 mm (3.5 in)
1946
56.9 mm (2.2 in)
1947
113.3 mm (4.5 in)
1948
78.2 mm (3.1 in)
1949
60.5 mm (2.4 in)
1950
54.9 mm (2.2 in)
1951
62.7 mm (2.5 in)
1952
61.5 mm (2.4 in)
1953
70.9 mm (2.8 in)
1954
61.5 mm (2.4 in)
1955
127.5 mm (5.0 in)
1956
55.1 mm (2.2 in)
1957
66.3 mm (2.6 in)
1958
70.9 mm (2.8 in)
Wettest five days (Rx5day)
The wettest five days of the year at Iola, 1905 to 1958. The record is 235.7 mm (9.3 in) in 1943, marked on the chart; the median year is 113.3 mm (4.5 in).
Wettest five days (Rx5day) at Iola by year
Year
Wettest five days (Rx5day)
1905
145.3 mm (5.7 in)
1906
85.3 mm (3.4 in)
1907
127.3 mm (5.0 in)
1908
192.3 mm (7.6 in)
1909
92.9 mm (3.7 in)
1910
123.1 mm (4.8 in)
1911
103.7 mm (4.1 in)
1912
120.6 mm (4.7 in)
1913
81.8 mm (3.2 in)
1914
98.2 mm (3.9 in)
1915
176.8 mm (7.0 in)
1916
113.6 mm (4.5 in)
1917
90.2 mm (3.6 in)
1918
85.1 mm (3.4 in)
1919
83.8 mm (3.3 in)
1920
98.3 mm (3.9 in)
1921
108.0 mm (4.3 in)
1922
107.7 mm (4.2 in)
1923
123.8 mm (4.9 in)
1924
125.0 mm (4.9 in)
1925
151.6 mm (6.0 in)
1926
187.2 mm (7.4 in)
1927
158.9 mm (6.3 in)
1928
210.1 mm (8.3 in)
1929
85.4 mm (3.4 in)
1930
105.9 mm (4.2 in)
1931
93.7 mm (3.7 in)
1932
70.8 mm (2.8 in)
1933
78.5 mm (3.1 in)
1934
96.0 mm (3.8 in)
1935
131.3 mm (5.2 in)
1936
75.2 mm (3.0 in)
1937
120.7 mm (4.8 in)
1938
130.4 mm (5.1 in)
1939
73.0 mm (2.9 in)
1940
89.7 mm (3.5 in)
1941
231.1 mm (9.1 in)
1942
132.3 mm (5.2 in)
1943
235.7 mm (9.3 in)
1944
121.5 mm (4.8 in)
1945
173.9 mm (6.8 in)
1946
87.4 mm (3.4 in)
1947
113.3 mm (4.5 in)
1948
201.1 mm (7.9 in)
1949
104.4 mm (4.1 in)
1950
109.8 mm (4.3 in)
1951
170.2 mm (6.7 in)
1952
71.2 mm (2.8 in)
1953
86.1 mm (3.4 in)
1954
113.3 mm (4.5 in)
1955
145.8 mm (5.7 in)
1956
134.9 mm (5.3 in)
1957
127.6 mm (5.0 in)
1958
102.9 mm (4.1 in)
Longest dry spell (CDD)
The longest dry spell of the year at Iola, 1905 to 1958. The record is 49 days in 1955, marked on the chart; the median year is 26 days.
Longest dry spell (CDD) at Iola by year
Year
Longest dry spell (CDD)
1905
22 days
1906
23 days
1907
19 days
1908
28 days
1909
23 days
1910
47 days
1911
27 days
1912
32 days
1913
18 days
1914
34 days
1915
26 days
1916
41 days
1917
41 days
1918
30 days
1919
38 days
1920
29 days
1921
26 days
1922
23 days
1923
22 days
1924
20 days
1925
21 days
1926
21 days
1927
17 days
1928
19 days
1929
16 days
1930
41 days
1931
22 days
1932
23 days
1933
19 days
1934
35 days
1935
25 days
1936
32 days
1937
22 days
1938
44 days
1939
24 days
1940
27 days
1941
18 days
1942
24 days
1943
28 days
1944
29 days
1945
29 days
1946
24 days
1947
25 days
1948
24 days
1949
28 days
1950
31 days
1951
21 days
1952
48 days
1953
17 days
1954
39 days
1955
49 days
1956
33 days
1957
17 days
1958
44 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
52 years with a frost
Across 52 years with a frost, the median last spring frost at Iola falls on 11 April and the median first autumn frost on 23 October, which leaves a median of 197 days between them.
Fitted over all years, the growing season changes by +3.1 days per decade at this station.
Frost dates and growing season at Iola
Measure
Median, all years
Earliest period
Recent period (1928 to 1958)
Recent against earliest
Fitted trend
Last spring frost
11 April
n/a
12 April
n/a
+0.4 days per decade
First autumn frost
23 October
n/a
27 October
n/a
+3.5 days per decade
Growing days
197 days
n/a
198 days
n/a
+3.1 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.
Rainfall Return Levels
53 years, 1906 to 1958
A day with at least 70.2 mm (2.8 in) of rain is expected about once in 2 years. A day with at least 191.7 mm (7.5 in) of rain is expected about once in 100 years.
Rainfall return levels at Iola: the daily rain expected about once in a given number of years
Expected about once in
A day with at least
Note
2 years
70.2 mm (2.8 in)
5 years
93.4 mm (3.7 in)
10 years
112.0 mm (4.4 in)
25 years
139.8 mm (5.5 in)
50 years
164.0 mm (6.5 in)
100 years
191.7 mm (7.5 in)
Longer than the 53 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, 53 years of values from 1906 to 1958.
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: 172.2 mm (6.8 in) in 1926; 149.6 mm (5.9 in) in 1941; 146.3 mm (5.8 in) in 1915.
Station Changes
1 suspected
One change was suspected in the annual mean temperature of Iola, at 1932. Each is measured against neighbouring stations.
Relative to 5 neighbouring stations, the station's annual mean temperature from 1932 ran 0.3 C (0.5 F) higher than in the years before (likely change).
Suspected changes in the annual mean temperature at Iola, against neighbouring stations
Year
Shift (C)
Shift (F)
Strength
Neighbours
1932
+0.3
+0.5
likely
5
Possible change at the station (a move, a new instrument or a new site); the record is kept as measured. A "likely" change has a larger test statistic than a "possible" one. Neither says why the station differs from its neighbours. How changes are found, and the largest ones.
Download the Data
Data for Iola standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Iola 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.