Record envelope, standing records and threshold days for La Salle Peru (USC00114922), Illinois, United States, with 63 years of record.
Key Facts for La Salle Peru
La Salle Peru (USC00114922) is a weather station in Illinois, United States at 41.33 latitude and -89.13 longitude, 159 m (522 ft) above sea level.
The station reports from 1901 to 1963, 63 years of record.
1,464 records set at La Salle Peru still stand.
Records are tracked for tmax, tmin, prcp, snow: an element needs 30 years of data to be eligible.
La Salle Peru set a daily record low minimum temperature of 5.0 C (41.0 F) on 22 June 1963.
About the Station
Location: Illinois, United States, 41.33 latitude, -89.13 longitude.
Elevation: 159 m (522 ft).
Period of record: 1901 to 1963, 63 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 La Salle Peru. 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 La Salle Peru, with 2026 drawn through them
Month
Highest record high
Lowest record low
2026 highest maximum
2026 lowest minimum
Jan
20.0 C (68.0 F)
-30.0 C (-22.0 F)
n/a
n/a
Feb
22.2 C (72.0 F)
-28.9 C (-20.0 F)
n/a
n/a
Mar
28.9 C (84.0 F)
-23.9 C (-11.0 F)
n/a
n/a
Apr
34.4 C (93.9 F)
-8.9 C (16.0 F)
n/a
n/a
May
40.6 C (105.1 F)
-2.2 C (28.0 F)
n/a
n/a
Jun
41.7 C (107.1 F)
2.8 C (37.0 F)
n/a
n/a
Jul
45.0 C (113.0 F)
5.6 C (42.1 F)
n/a
n/a
Aug
41.1 C (106.0 F)
2.8 C (37.0 F)
n/a
n/a
Sep
39.4 C (102.9 F)
-3.9 C (25.0 F)
n/a
n/a
Oct
33.9 C (93.0 F)
-10.0 C (14.0 F)
n/a
n/a
Nov
27.8 C (82.0 F)
-20.6 C (-5.1 F)
n/a
n/a
Dec
19.4 C (66.9 F)
-28.9 C (-20.0 F)
n/a
n/a
Which Years Hold Standing Records
1,464 standing records
Year with most
1,464 records at La Salle Peru still stand. 1936 holds the most, with 61.
Standing records at La Salle Peru by the year they were set
Year set
Standing records
1901
13
1902
23
1903
20
1904
20
1913
12
1914
43
1915
39
1916
23
1919
9
1920
35
1921
32
1922
18
1923
20
1924
39
1925
46
1926
24
1927
32
1928
34
1929
35
1930
57
1931
38
1932
28
1933
47
1934
46
1935
21
1936
61
1937
20
1938
21
1939
25
1940
20
1941
22
1942
32
1943
24
1944
28
1945
32
1946
30
1947
34
1948
17
1949
33
1950
29
1951
31
1952
22
1953
26
1954
13
1955
15
1956
18
1957
15
1958
19
1959
20
1960
33
1961
17
1962
32
1963
21
All-Time Record Progression
2 new records
2 all-time records were set at La Salle Peru between 14 July 1958 and 28 January 1963. Each dot is a new record.
When La Salle Peru set new all-time records
Date
Kind
Detail
1958-07-14
Record daily precipitation
Record daily precipitation 139.4 mm (5.5 in)
1963-01-28
Record low minimum temperature
Record low minimum temperature -30.0 C (-22.0 F)
Wettest Day of Each Month
Jul: 139.4 mm (5.5 in)
The wettest day on record for each calendar month at La Salle Peru. The most was 139.4 mm (5.5 in) on 14 July 1958.
Record daily precipitation for each month at La Salle Peru
Month
Record daily precipitation (mm)
Date
Jan
63.2 mm (2.5 in)
24 January 1938
Feb
48.5 mm (1.9 in)
10 February 1939
Mar
87.9 mm (3.5 in)
19 March 1948
Apr
62.5 mm (2.5 in)
27 April 1943
May
72.6 mm (2.9 in)
10 May 1951
Jun
62.2 mm (2.4 in)
1 June 1954
Jul
139.4 mm (5.5 in)
14 July 1958
Aug
94.2 mm (3.7 in)
2 August 1921
Sep
79.8 mm (3.1 in)
5 September 1941
Oct
116.1 mm (4.6 in)
11 October 1931
Nov
55.6 mm (2.2 in)
17 November 1928
Dec
41.7 mm (1.6 in)
12 December 1946
Period of Record Coverage
1901 to 1963
Complete yearUnder 90 percent of days
53 years of record at La Salle Peru, 1901 to 1963. 12 years have data for under 90 percent of days and are left out of rankings: 1901, 1902, 1903, 1904, 1913, 1916, 1919, 1938 and others.
Cooler than the station meanWarmer than the station mean
One stripe for each of 41 complete years at La Salle Peru, 1920 to 1962. Blue stripes are years cooler than the station's own mean of 11.1 C (52.1 F); red stripes are warmer. The coolest year was 1924, at 9.5 C (49.1 F), and the warmest was 1921, at 13.1 C (55.6 F). The strongest colour marks a difference of 2.0 C (3.6 F).
Annual mean temperature at La Salle Peru as warming stripes, 1920 to 1962
Year
Annual mean temperature
Difference from the station mean
1920
10.6 C
-0.52 C
1921
13.1 C
+1.97 C
1922
11.6 C
+0.48 C
1923
10.9 C
-0.29 C
1924
9.5 C
-1.65 C
1925
10.9 C
-0.26 C
1926
10.3 C
-0.89 C
1927
11.5 C
+0.37 C
1928
11.3 C
+0.15 C
1929
10.2 C
-0.98 C
1930
11.8 C
+0.62 C
1931
13.1 C
+1.96 C
1932
11.2 C
+0.07 C
1933
12.1 C
+0.93 C
1934
12.1 C
+0.92 C
1935
10.7 C
-0.50 C
1936
11.0 C
-0.15 C
1937
10.4 C
-0.77 C
1939
12.3 C
+1.14 C
1941
12.3 C
+1.17 C
1942
11.1 C
-0.07 C
1943
10.5 C
-0.70 C
1944
11.5 C
+0.30 C
1945
10.3 C
-0.81 C
1946
12.3 C
+1.16 C
1947
11.0 C
-0.16 C
1948
11.0 C
-0.18 C
1949
11.8 C
+0.63 C
1950
9.9 C
-1.29 C
1951
9.8 C
-1.40 C
1952
11.5 C
+0.31 C
1953
12.0 C
+0.85 C
1954
11.9 C
+0.75 C
1955
11.4 C
+0.26 C
1956
11.6 C
+0.43 C
1957
11.0 C
-0.13 C
1958
10.1 C
-1.10 C
1959
10.9 C
-0.29 C
1960
10.1 C
-1.04 C
1961
10.7 C
-0.45 C
1962
10.3 C
-0.85 C
The fitted trend in annual mean temperature here over 1920 to 1962 is -0.1 C (-0.3 to 0.1) per decade. The interval includes zero, so the trend is not clearly different from zero. In Fahrenheit: -0.2 F (-0.6 to 0.2) per decade. The slope is a straight line fitted to 41 complete years; the brackets give its 95 percent interval.
Fitted temperature trends per decade at La Salle Peru
Measure
Per decade (C)
Per decade (F)
Period
Complete years
Reading
Annual mean temperature
-0.1 C (-0.3 to 0.1) per decade
-0.2 F (-0.6 to 0.2) per decade
1920 to 1962
41
Not clearly different from zero
Mean daily maximum
-0.29 C (-0.54 to -0.03) per decade
-0.5 F (-1.0 to -0.1) per decade
1920 to 1962
41
Fall
Mean daily minimum
0.05 C (-0.14 to 0.24) per decade
0.1 F (-0.3 to 0.4) per decade
1920 to 1962
41
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
1901 to 1963
Yearly extremes at La Salle Peru: the record and the median year
Measure
Record
Year of the record
Median year
Years with a value
Hottest day (TXx)
45.0 C (113.0 F)
1936
37.8 C (100.0 F)
53
Coldest night (TNn)
-30.0 C (-22.0 F)
1963
-23.9 C (-11.0 F)
53
Wettest day (Rx1day)
139.4 mm (5.5 in)
1958
52.3 mm (2.1 in)
61
Wettest five days (Rx5day)
185.4 mm (7.3 in)
1902
89.9 mm (3.5 in)
61
Longest dry spell (CDD)
38 days
1930
23 days
61
Hottest day (TXx)
The hottest day of the year at La Salle Peru, 1901 to 1963. The record is 45.0 C (113.0 F) in 1936, marked on the chart; the median year is 37.8 C (100.0 F).
Hottest day (TXx) at La Salle Peru by year
Year
Hottest day (TXx)
1901
41.7 C (107.1 F)
1902
33.3 C (91.9 F)
1903
38.3 C (100.9 F)
1904
33.3 C (91.9 F)
1905
n/a
1906
n/a
1907
n/a
1908
n/a
1909
n/a
1910
n/a
1911
n/a
1912
n/a
1913
23.3 C (73.9 F)
1914
38.3 C (100.9 F)
1915
33.9 C (93.0 F)
1916
41.1 C (106.0 F)
1919
37.8 C (100.0 F)
1920
37.8 C (100.0 F)
1921
40.0 C (104.0 F)
1922
38.3 C (100.9 F)
1923
38.3 C (100.9 F)
1924
35.0 C (95.0 F)
1925
38.9 C (102.0 F)
1926
36.7 C (98.1 F)
1927
37.8 C (100.0 F)
1928
35.6 C (96.1 F)
1929
35.6 C (96.1 F)
1930
41.7 C (107.1 F)
1931
40.6 C (105.1 F)
1932
37.2 C (99.0 F)
1933
39.4 C (102.9 F)
1934
42.2 C (108.0 F)
1935
36.7 C (98.1 F)
1936
45.0 C (113.0 F)
1937
38.9 C (102.0 F)
1938
36.7 C (98.1 F)
1939
38.3 C (100.9 F)
1940
40.0 C (104.0 F)
1941
38.3 C (100.9 F)
1942
36.7 C (98.1 F)
1943
36.7 C (98.1 F)
1944
38.9 C (102.0 F)
1945
37.8 C (100.0 F)
1946
38.9 C (102.0 F)
1947
40.0 C (104.0 F)
1948
37.2 C (99.0 F)
1949
39.4 C (102.9 F)
1950
35.0 C (95.0 F)
1951
35.6 C (96.1 F)
1952
37.2 C (99.0 F)
1953
39.4 C (102.9 F)
1954
38.3 C (100.9 F)
1955
39.4 C (102.9 F)
1956
39.4 C (102.9 F)
1957
36.1 C (97.0 F)
1958
35.6 C (96.1 F)
1959
36.7 C (98.1 F)
1960
36.7 C (98.1 F)
1961
36.7 C (98.1 F)
1962
35.0 C (95.0 F)
1963
36.7 C (98.1 F)
Coldest night (TNn)
The coldest night of the year at La Salle Peru, 1901 to 1963. The record is -30.0 C (-22.0 F) in 1963, marked on the chart; the median year is -23.9 C (-11.0 F).
Coldest night (TNn) at La Salle Peru by year
Year
Coldest night (TNn)
1901
-10.0 C (14.0 F)
1902
-24.4 C (-11.9 F)
1903
-26.1 C (-15.0 F)
1904
-25.6 C (-14.1 F)
1905
n/a
1906
n/a
1907
n/a
1908
n/a
1909
n/a
1910
n/a
1911
n/a
1912
n/a
1913
-11.7 C (10.9 F)
1914
-28.9 C (-20.0 F)
1915
-28.3 C (-18.9 F)
1916
-27.2 C (-17.0 F)
1919
-24.4 C (-11.9 F)
1920
-24.4 C (-11.9 F)
1921
-16.1 C (3.0 F)
1922
-22.2 C (-8.0 F)
1923
-22.2 C (-8.0 F)
1924
-28.9 C (-20.0 F)
1925
-22.8 C (-9.0 F)
1926
-21.1 C (-6.0 F)
1927
-29.4 C (-20.9 F)
1928
-24.4 C (-11.9 F)
1929
-26.1 C (-15.0 F)
1930
-28.3 C (-18.9 F)
1931
-17.8 C (0.0 F)
1932
-26.1 C (-15.0 F)
1933
-28.9 C (-20.0 F)
1934
-23.9 C (-11.0 F)
1935
-22.8 C (-9.0 F)
1936
-29.4 C (-20.9 F)
1937
-22.2 C (-8.0 F)
1938
-17.8 C (0.0 F)
1939
-16.1 C (3.0 F)
1940
-25.6 C (-14.1 F)
1941
-20.0 C (-4.0 F)
1942
-23.9 C (-11.0 F)
1943
-24.4 C (-11.9 F)
1944
-22.8 C (-9.0 F)
1945
-22.2 C (-8.0 F)
1946
-20.0 C (-4.0 F)
1947
-21.1 C (-6.0 F)
1948
-22.2 C (-8.0 F)
1949
-20.0 C (-4.0 F)
1950
-22.8 C (-9.0 F)
1951
-26.1 C (-15.0 F)
1952
-20.0 C (-4.0 F)
1953
-20.0 C (-4.0 F)
1954
-21.1 C (-6.0 F)
1955
-23.3 C (-9.9 F)
1956
-17.2 C (1.0 F)
1957
-24.4 C (-11.9 F)
1958
-24.4 C (-11.9 F)
1959
-25.0 C (-13.0 F)
1960
-25.6 C (-14.1 F)
1961
-23.3 C (-9.9 F)
1962
-23.9 C (-11.0 F)
1963
-30.0 C (-22.0 F)
Wettest day (Rx1day)
The wettest day of the year at La Salle Peru, 1901 to 1963. The record is 139.4 mm (5.5 in) in 1958, marked on the chart; the median year is 52.3 mm (2.1 in).
Wettest day (Rx1day) at La Salle Peru by year
Year
Wettest day (Rx1day)
1901
82.6 mm (3.3 in)
1902
63.5 mm (2.5 in)
1903
50.8 mm (2.0 in)
1904
40.6 mm (1.6 in)
1905
61.2 mm (2.4 in)
1906
71.1 mm (2.8 in)
1907
47.8 mm (1.9 in)
1908
38.6 mm (1.5 in)
1909
37.6 mm (1.5 in)
1910
84.1 mm (3.3 in)
1911
56.4 mm (2.2 in)
1912
46.0 mm (1.8 in)
1913
44.7 mm (1.8 in)
1914
41.9 mm (1.6 in)
1915
54.6 mm (2.1 in)
1916
48.3 mm (1.9 in)
1919
47.5 mm (1.9 in)
1920
52.3 mm (2.1 in)
1921
94.2 mm (3.7 in)
1922
58.4 mm (2.3 in)
1923
38.1 mm (1.5 in)
1924
54.6 mm (2.1 in)
1925
36.8 mm (1.4 in)
1926
55.6 mm (2.2 in)
1927
51.6 mm (2.0 in)
1928
55.6 mm (2.2 in)
1929
46.0 mm (1.8 in)
1930
51.8 mm (2.0 in)
1931
116.1 mm (4.6 in)
1932
78.2 mm (3.1 in)
1933
44.2 mm (1.7 in)
1934
72.1 mm (2.8 in)
1935
51.3 mm (2.0 in)
1936
33.3 mm (1.3 in)
1937
37.6 mm (1.5 in)
1938
63.2 mm (2.5 in)
1939
62.7 mm (2.5 in)
1940
42.9 mm (1.7 in)
1941
79.8 mm (3.1 in)
1942
45.7 mm (1.8 in)
1943
88.1 mm (3.5 in)
1944
40.6 mm (1.6 in)
1945
51.1 mm (2.0 in)
1946
41.7 mm (1.6 in)
1947
57.9 mm (2.3 in)
1948
87.9 mm (3.5 in)
1949
61.2 mm (2.4 in)
1950
58.7 mm (2.3 in)
1951
72.6 mm (2.9 in)
1952
37.6 mm (1.5 in)
1953
70.4 mm (2.8 in)
1954
81.3 mm (3.2 in)
1955
55.6 mm (2.2 in)
1956
43.9 mm (1.7 in)
1957
46.2 mm (1.8 in)
1958
139.4 mm (5.5 in)
1959
38.4 mm (1.5 in)
1960
64.5 mm (2.5 in)
1961
67.8 mm (2.7 in)
1962
36.8 mm (1.4 in)
1963
26.7 mm (1.1 in)
Wettest five days (Rx5day)
The wettest five days of the year at La Salle Peru, 1901 to 1963. The record is 185.4 mm (7.3 in) in 1902, marked on the chart; the median year is 89.9 mm (3.5 in).
Wettest five days (Rx5day) at La Salle Peru by year
Year
Wettest five days (Rx5day)
1901
93.3 mm (3.7 in)
1902
185.4 mm (7.3 in)
1903
96.5 mm (3.8 in)
1904
40.6 mm (1.6 in)
1905
67.8 mm (2.7 in)
1906
101.6 mm (4.0 in)
1907
99.1 mm (3.9 in)
1908
54.7 mm (2.2 in)
1909
57.1 mm (2.2 in)
1910
88.2 mm (3.5 in)
1911
124.0 mm (4.9 in)
1912
72.4 mm (2.9 in)
1913
62.2 mm (2.4 in)
1914
68.3 mm (2.7 in)
1915
72.7 mm (2.9 in)
1916
69.1 mm (2.7 in)
1919
75.9 mm (3.0 in)
1920
64.0 mm (2.5 in)
1921
105.9 mm (4.2 in)
1922
83.3 mm (3.3 in)
1923
75.4 mm (3.0 in)
1924
121.7 mm (4.8 in)
1925
66.8 mm (2.6 in)
1926
114.3 mm (4.5 in)
1927
118.6 mm (4.7 in)
1928
93.7 mm (3.7 in)
1929
91.8 mm (3.6 in)
1930
63.0 mm (2.5 in)
1931
128.6 mm (5.1 in)
1932
121.6 mm (4.8 in)
1933
62.5 mm (2.5 in)
1934
99.8 mm (3.9 in)
1935
114.3 mm (4.5 in)
1936
89.9 mm (3.5 in)
1937
92.2 mm (3.6 in)
1938
102.1 mm (4.0 in)
1939
74.7 mm (2.9 in)
1940
54.6 mm (2.1 in)
1941
129.0 mm (5.1 in)
1942
84.8 mm (3.3 in)
1943
101.6 mm (4.0 in)
1944
86.8 mm (3.4 in)
1945
89.2 mm (3.5 in)
1946
67.0 mm (2.6 in)
1947
72.1 mm (2.8 in)
1948
102.4 mm (4.0 in)
1949
105.3 mm (4.1 in)
1950
105.9 mm (4.2 in)
1951
98.3 mm (3.9 in)
1952
74.2 mm (2.9 in)
1953
110.3 mm (4.3 in)
1954
119.1 mm (4.7 in)
1955
95.1 mm (3.7 in)
1956
83.7 mm (3.3 in)
1957
79.3 mm (3.1 in)
1958
158.7 mm (6.2 in)
1959
65.6 mm (2.6 in)
1960
91.4 mm (3.6 in)
1961
135.2 mm (5.3 in)
1962
62.4 mm (2.5 in)
1963
49.3 mm (1.9 in)
Longest dry spell (CDD)
The longest dry spell of the year at La Salle Peru, 1901 to 1963. The record is 38 days in 1930, marked on the chart; the median year is 23 days.
Longest dry spell (CDD) at La Salle Peru by year
Year
Longest dry spell (CDD)
1901
27 days
1902
25 days
1903
34 days
1904
28 days
1905
18 days
1906
21 days
1907
24 days
1908
36 days
1909
16 days
1910
21 days
1911
18 days
1912
25 days
1913
24 days
1914
33 days
1915
31 days
1916
19 days
1919
16 days
1920
23 days
1921
19 days
1922
22 days
1923
21 days
1924
15 days
1925
22 days
1926
12 days
1927
20 days
1928
23 days
1929
23 days
1930
38 days
1931
18 days
1932
17 days
1933
34 days
1934
20 days
1935
17 days
1936
27 days
1937
19 days
1938
24 days
1939
30 days
1940
17 days
1941
16 days
1942
27 days
1943
27 days
1944
33 days
1945
19 days
1946
25 days
1947
28 days
1948
22 days
1949
21 days
1950
31 days
1951
13 days
1952
33 days
1953
23 days
1954
19 days
1955
23 days
1956
25 days
1957
29 days
1958
29 days
1959
19 days
1960
25 days
1961
18 days
1962
20 days
1963
14 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
41 years with a frost
Across 41 years with a frost, the median last spring frost at La Salle Peru falls on 28 April and the median first autumn frost on 10 October, which leaves a median of 164 days between them.
Fitted over all years, the growing season changes by +6.9 days per decade at this station.
Frost dates and growing season at La Salle Peru
Measure
Median, all years
Earliest period
Recent period (1931 to 1962)
Recent against earliest
Fitted trend
Last spring frost
28 April
n/a
27 April
n/a
-3.8 days per decade
First autumn frost
10 October
n/a
13 October
n/a
+3.1 days per decade
Growing days
164 days
n/a
167 days
n/a
+6.9 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
54 years, 1906 to 1962
A day with at least 52.8 mm (2.1 in) of rain is expected about once in 2 years. A day with at least 139.2 mm (5.5 in) of rain is expected about once in 100 years.
Rainfall return levels at La Salle Peru: the daily rain expected about once in a given number of years
Expected about once in
A day with at least
Note
2 years
52.8 mm (2.1 in)
5 years
69.9 mm (2.8 in)
10 years
83.3 mm (3.3 in)
25 years
103.1 mm (4.1 in)
50 years
120.1 mm (4.7 in)
100 years
139.2 mm (5.5 in)
Longer than the 54 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, 54 years of values from 1906 to 1962.
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: 139.4 mm (5.5 in) in 1958; 116.1 mm (4.6 in) in 1931; 94.2 mm (3.7 in) in 1921.
Station Changes
No change in the annual mean temperature of this station was found against its neighbours.
Download the Data
Data for La Salle Peru standing records by year: CSV or JSON. Field meanings are on the data page.
Data for La Salle Peru 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 2026-10-15 (15 October 2026). Records are computed by this site and are not official.