Record envelope, standing records and threshold days for Lake City (USC00134547), Iowa, United States, with 37 years of record.
Key Facts for Lake City
Lake City (USC00134547) is a weather station in Iowa, United States at 42.27 latitude and -94.73 longitude, 378 m (1,240 ft) above sea level.
The station reports from 1936 to 1972, 37 years of record.
1,464 records set at Lake City still stand.
Records are tracked for tmax, tmin, prcp, snow: an element needs 30 years of data to be eligible.
Lake City set a daily record precipitation of 17.3 mm (0.7 in) on 25 September 1972.
About the Station
Location: Iowa, United States, 42.27 latitude, -94.73 longitude.
Elevation: 378 m (1,240 ft).
Period of record: 1936 to 1972, 37 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 Lake City. 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 Lake City, with 2026 drawn through them
Month
Highest record high
Lowest record low
2026 highest maximum
2026 lowest minimum
Jan
19.4 C (66.9 F)
-32.2 C (-26.0 F)
n/a
n/a
Feb
17.2 C (63.0 F)
-29.4 C (-20.9 F)
n/a
n/a
Mar
29.4 C (84.9 F)
-29.4 C (-20.9 F)
n/a
n/a
Apr
32.8 C (91.0 F)
-11.1 C (12.0 F)
n/a
n/a
May
38.3 C (100.9 F)
-3.9 C (25.0 F)
n/a
n/a
Jun
38.9 C (102.0 F)
1.7 C (35.1 F)
n/a
n/a
Jul
43.3 C (109.9 F)
6.1 C (43.0 F)
n/a
n/a
Aug
42.8 C (109.0 F)
4.4 C (39.9 F)
n/a
n/a
Sep
38.9 C (102.0 F)
-5.0 C (23.0 F)
n/a
n/a
Oct
34.4 C (93.9 F)
-9.4 C (15.1 F)
n/a
n/a
Nov
27.2 C (81.0 F)
-22.2 C (-8.0 F)
n/a
n/a
Dec
20.0 C (68.0 F)
-27.8 C (-18.0 F)
n/a
n/a
Which Years Hold Standing Records
1,464 standing records
Year with most
1,464 records at Lake City still stand. 1942 holds the most, with 63.
Standing records at Lake City by the year they were set
Year set
Standing records
1936
62
1937
55
1938
40
1939
56
1940
41
1941
45
1942
63
1943
28
1944
28
1945
38
1946
50
1947
63
1948
36
1949
31
1950
47
1951
50
1952
43
1953
38
1954
47
1955
52
1956
22
1957
18
1958
30
1959
35
1960
33
1961
25
1962
39
1963
45
1964
37
1965
43
1966
31
1967
39
1968
42
1969
20
1970
32
1971
28
1972
32
All-Time Record Progression
2 new records
2 all-time records were set at Lake City between 20 January 1970 and 21 January 1970. Each dot is a new record.
When Lake City set new all-time records
Date
Kind
Detail
1970-01-20
Record low maximum temperature
Record low maximum temperature -22.8 C (-9.0 F)
1970-01-21
Record low minimum temperature
Record low minimum temperature -32.2 C (-26.0 F)
Wettest Day of Each Month
Aug: 125.7 mm (4.9 in)
The wettest day on record for each calendar month at Lake City. The most was 125.7 mm (4.9 in) on 12 August 1943.
Record daily precipitation for each month at Lake City
Month
Record daily precipitation (mm)
Date
Jan
33.5 mm (1.3 in)
8 January 1937
Feb
39.4 mm (1.6 in)
27 February 1948
Mar
43.9 mm (1.7 in)
26 March 1959
Apr
68.6 mm (2.7 in)
23 April 1955
May
99.1 mm (3.9 in)
25 May 1960
Jun
121.9 mm (4.8 in)
9 June 1967
Jul
70.1 mm (2.8 in)
17 July 1972
Aug
125.7 mm (4.9 in)
12 August 1943
Sep
72.1 mm (2.8 in)
3 September 1949
Oct
54.9 mm (2.2 in)
9 October 1968
Nov
41.9 mm (1.6 in)
3 November 1938
Dec
27.9 mm (1.1 in)
19 December 1968
Period of Record Coverage
1936 to 1972
Complete yearUnder 90 percent of days
37 years of record at Lake City, 1936 to 1972. 9 years have data for under 90 percent of days and are left out of rankings: 1936, 1943, 1944, 1956, 1962, 1966, 1969, 1970 and others.
Cooler than the station meanWarmer than the station mean
One stripe for each of 21 complete years at Lake City, 1937 to 1968. Blue stripes are years cooler than the station's own mean of 9.2 C (48.5 F); red stripes are warmer. The coolest year was 1951, at 7.3 C (45.1 F), and the warmest was 1939, at 10.4 C (50.7 F). The strongest colour marks a difference of 2.0 C (3.6 F).
Annual mean temperature at Lake City as warming stripes, 1937 to 1968
Year
Annual mean temperature
Difference from the station mean
1937
8.4 C
-0.83 C
1938
10.2 C
+1.03 C
1939
10.4 C
+1.22 C
1941
10.3 C
+1.09 C
1942
9.1 C
-0.05 C
1945
8.8 C
-0.41 C
1946
10.2 C
+1.01 C
1947
9.3 C
+0.07 C
1948
9.3 C
+0.11 C
1949
9.2 C
+0.06 C
1950
7.3 C
-1.85 C
1951
7.3 C
-1.92 C
1952
9.2 C
+0.06 C
1954
10.1 C
+0.94 C
1955
9.6 C
+0.39 C
1957
9.1 C
-0.05 C
1958
9.1 C
-0.10 C
1959
8.9 C
-0.25 C
1960
8.7 C
-0.53 C
1961
8.9 C
-0.25 C
1968
9.5 C
+0.29 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
1936 to 1972
Yearly extremes at Lake City: the record and the median year
Measure
Record
Year of the record
Median year
Years with a value
Hottest day (TXx)
43.3 C (109.9 F)
1936
36.7 C (98.1 F)
37
Coldest night (TNn)
-32.2 C (-26.0 F)
1970
-27.8 C (-18.0 F)
37
Wettest day (Rx1day)
125.7 mm (4.9 in)
1943
54.9 mm (2.2 in)
37
Wettest five days (Rx5day)
245.0 mm (9.6 in)
1967
84.6 mm (3.3 in)
37
Longest dry spell (CDD)
53 days
1943
30 days
37
Hottest day (TXx)
The hottest day of the year at Lake City, 1936 to 1972. The record is 43.3 C (109.9 F) in 1936, marked on the chart; the median year is 36.7 C (98.1 F).
Hottest day (TXx) at Lake City by year
Year
Hottest day (TXx)
1936
43.3 C (109.9 F)
1937
38.9 C (102.0 F)
1938
36.7 C (98.1 F)
1939
38.9 C (102.0 F)
1940
39.4 C (102.9 F)
1941
40.0 C (104.0 F)
1942
35.0 C (95.0 F)
1943
35.0 C (95.0 F)
1944
35.0 C (95.0 F)
1945
37.2 C (99.0 F)
1946
37.8 C (100.0 F)
1947
40.0 C (104.0 F)
1948
37.8 C (100.0 F)
1949
36.1 C (97.0 F)
1950
35.0 C (95.0 F)
1951
36.1 C (97.0 F)
1952
36.7 C (98.1 F)
1953
36.7 C (98.1 F)
1954
39.4 C (102.9 F)
1955
41.1 C (106.0 F)
1956
38.3 C (100.9 F)
1957
37.2 C (99.0 F)
1958
35.0 C (95.0 F)
1959
36.7 C (98.1 F)
1960
36.1 C (97.0 F)
1961
35.6 C (96.1 F)
1962
34.4 C (93.9 F)
1963
38.3 C (100.9 F)
1964
36.1 C (97.0 F)
1965
37.2 C (99.0 F)
1966
37.2 C (99.0 F)
1967
38.3 C (100.9 F)
1968
36.1 C (97.0 F)
1969
35.6 C (96.1 F)
1970
36.7 C (98.1 F)
1971
37.2 C (99.0 F)
1972
35.0 C (95.0 F)
Coldest night (TNn)
The coldest night of the year at Lake City, 1936 to 1972. The record is -32.2 C (-26.0 F) in 1970, marked on the chart; the median year is -27.8 C (-18.0 F).
Coldest night (TNn) at Lake City by year
Year
Coldest night (TNn)
1936
-22.2 C (-8.0 F)
1937
-28.3 C (-18.9 F)
1938
-24.4 C (-11.9 F)
1939
-25.0 C (-13.0 F)
1940
-31.1 C (-24.0 F)
1941
-21.7 C (-7.1 F)
1942
-31.7 C (-25.1 F)
1943
-28.3 C (-18.9 F)
1944
-27.8 C (-18.0 F)
1945
-23.9 C (-11.0 F)
1946
-27.2 C (-17.0 F)
1947
-25.6 C (-14.1 F)
1948
-29.4 C (-20.9 F)
1949
-26.1 C (-15.0 F)
1950
-28.9 C (-20.0 F)
1951
-28.9 C (-20.0 F)
1952
-26.1 C (-15.0 F)
1953
-26.7 C (-16.1 F)
1954
-28.3 C (-18.9 F)
1955
-27.8 C (-18.0 F)
1956
-28.9 C (-20.0 F)
1957
-27.8 C (-18.0 F)
1958
-28.3 C (-18.9 F)
1959
-26.7 C (-16.1 F)
1960
-25.0 C (-13.0 F)
1961
-27.2 C (-17.0 F)
1962
-29.4 C (-20.9 F)
1963
-30.0 C (-22.0 F)
1964
-25.0 C (-13.0 F)
1965
-26.1 C (-15.0 F)
1966
-31.7 C (-25.1 F)
1967
-26.7 C (-16.1 F)
1968
-27.8 C (-18.0 F)
1969
-27.8 C (-18.0 F)
1970
-32.2 C (-26.0 F)
1971
-27.2 C (-17.0 F)
1972
-30.6 C (-23.1 F)
Wettest day (Rx1day)
The wettest day of the year at Lake City, 1936 to 1972. The record is 125.7 mm (4.9 in) in 1943, marked on the chart; the median year is 54.9 mm (2.2 in).
Wettest day (Rx1day) at Lake City by year
Year
Wettest day (Rx1day)
1936
52.8 mm (2.1 in)
1937
35.6 mm (1.4 in)
1938
65.3 mm (2.6 in)
1939
30.5 mm (1.2 in)
1940
82.0 mm (3.2 in)
1941
37.8 mm (1.5 in)
1942
65.8 mm (2.6 in)
1943
125.7 mm (4.9 in)
1944
37.3 mm (1.5 in)
1945
48.3 mm (1.9 in)
1946
41.4 mm (1.6 in)
1947
83.1 mm (3.3 in)
1948
39.4 mm (1.6 in)
1949
72.1 mm (2.8 in)
1950
90.4 mm (3.6 in)
1951
67.3 mm (2.6 in)
1952
35.6 mm (1.4 in)
1953
50.8 mm (2.0 in)
1954
83.8 mm (3.3 in)
1955
68.6 mm (2.7 in)
1956
34.3 mm (1.4 in)
1957
78.0 mm (3.1 in)
1958
64.5 mm (2.5 in)
1959
58.4 mm (2.3 in)
1960
99.1 mm (3.9 in)
1961
57.2 mm (2.3 in)
1962
50.8 mm (2.0 in)
1963
37.1 mm (1.5 in)
1964
43.4 mm (1.7 in)
1965
71.1 mm (2.8 in)
1966
54.9 mm (2.2 in)
1967
121.9 mm (4.8 in)
1968
54.9 mm (2.2 in)
1969
50.5 mm (2.0 in)
1970
48.5 mm (1.9 in)
1971
43.9 mm (1.7 in)
1972
70.1 mm (2.8 in)
Wettest five days (Rx5day)
The wettest five days of the year at Lake City, 1936 to 1972. The record is 245.0 mm (9.6 in) in 1967, marked on the chart; the median year is 84.6 mm (3.3 in).
Wettest five days (Rx5day) at Lake City by year
Year
Wettest five days (Rx5day)
1936
59.2 mm (2.3 in)
1937
69.4 mm (2.7 in)
1938
126.4 mm (5.0 in)
1939
63.5 mm (2.5 in)
1940
98.3 mm (3.9 in)
1941
68.6 mm (2.7 in)
1942
66.3 mm (2.6 in)
1943
126.5 mm (5.0 in)
1944
67.2 mm (2.6 in)
1945
52.6 mm (2.1 in)
1946
92.5 mm (3.6 in)
1947
129.9 mm (5.1 in)
1948
67.3 mm (2.6 in)
1949
75.9 mm (3.0 in)
1950
122.4 mm (4.8 in)
1951
104.9 mm (4.1 in)
1952
35.6 mm (1.4 in)
1953
58.4 mm (2.3 in)
1954
136.6 mm (5.4 in)
1955
84.6 mm (3.3 in)
1956
68.3 mm (2.7 in)
1957
138.2 mm (5.4 in)
1958
84.6 mm (3.3 in)
1959
97.7 mm (3.8 in)
1960
115.6 mm (4.6 in)
1961
77.5 mm (3.1 in)
1962
81.2 mm (3.2 in)
1963
65.8 mm (2.6 in)
1964
55.4 mm (2.2 in)
1965
124.2 mm (4.9 in)
1966
67.9 mm (2.7 in)
1967
245.0 mm (9.6 in)
1968
86.2 mm (3.4 in)
1969
92.0 mm (3.6 in)
1970
86.1 mm (3.4 in)
1971
46.8 mm (1.8 in)
1972
93.5 mm (3.7 in)
Longest dry spell (CDD)
The longest dry spell of the year at Lake City, 1936 to 1972. The record is 53 days in 1943, marked on the chart; the median year is 30 days.
Longest dry spell (CDD) at Lake City by year
Year
Longest dry spell (CDD)
1936
27 days
1937
29 days
1938
27 days
1939
34 days
1940
30 days
1941
17 days
1942
34 days
1943
53 days
1944
21 days
1945
37 days
1946
41 days
1947
35 days
1948
32 days
1949
49 days
1950
31 days
1951
20 days
1952
53 days
1953
24 days
1954
31 days
1955
28 days
1956
37 days
1957
42 days
1958
31 days
1959
23 days
1960
34 days
1961
16 days
1962
50 days
1963
29 days
1964
21 days
1965
18 days
1966
25 days
1967
25 days
1968
38 days
1969
18 days
1970
24 days
1971
30 days
1972
22 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
21 years with a frost
Across 21 years with a frost, the median last spring frost at Lake City falls on 25 April and the median first autumn frost on 3 October, which leaves a median of 161 days between them.
Frost dates and growing season at Lake City
Measure
Median, all years
Earliest period
Recent period (1937 to 1968)
Recent against earliest
Fitted trend
Last spring frost
25 April
n/a
25 April
n/a
n/a
First autumn frost
3 October
n/a
3 October
n/a
n/a
Growing days
161 days
n/a
161 days
n/a
n/a
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
30 years, 1937 to 1971
A day with at least 55.5 mm (2.2 in) of rain is expected about once in 2 years. A day with at least 131.7 mm (5.2 in) of rain is expected about once in 100 years.
Rainfall return levels at Lake City: the daily rain expected about once in a given number of years
Expected about once in
A day with at least
Note
2 years
55.5 mm (2.2 in)
5 years
75.3 mm (3.0 in)
10 years
88.6 mm (3.5 in)
25 years
105.8 mm (4.2 in)
50 years
118.7 mm (4.7 in)
Longer than the 30 years of record
100 years
131.7 mm (5.2 in)
Longer than the 30 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, 30 years of values from 1937 to 1971.
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: 121.9 mm (4.8 in) in 1967; 99.1 mm (3.9 in) in 1960; 90.4 mm (3.6 in) in 1950.
Download the Data
Data for Lake City standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Lake City 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.