Record envelope, standing records and threshold days for Dwight (USC00112497), Illinois, United States, with 55 years of record.
Key Facts for Dwight
Dwight (USC00112497) is a weather station in Illinois, United States at 41.10 latitude and -88.42 longitude, 195 m (640 ft) above sea level.
The station reports from 1896 to 1950, 55 years of record.
1,464 records set at Dwight still stand.
Records are tracked for tmax, tmin, prcp, snow: an element needs 30 years of data to be eligible.
Dwight set a daily record snowfall of 15.2 cm (6.0 in) on 6 December 1950.
About the Station
Location: Illinois, United States, 41.10 latitude, -88.42 longitude.
Elevation: 195 m (640 ft).
Period of record: 1896 to 1950, 55 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 Dwight. 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 Dwight, 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)
-31.1 C (-24.0 F)
n/a
n/a
Feb
21.1 C (70.0 F)
-30.0 C (-22.0 F)
n/a
n/a
Mar
29.4 C (84.9 F)
-22.8 C (-9.0 F)
n/a
n/a
Apr
32.2 C (90.0 F)
-13.3 C (8.1 F)
n/a
n/a
May
36.7 C (98.1 F)
-4.4 C (24.1 F)
n/a
n/a
Jun
38.9 C (102.0 F)
2.2 C (36.0 F)
n/a
n/a
Jul
41.1 C (106.0 F)
4.4 C (39.9 F)
n/a
n/a
Aug
40.6 C (105.1 F)
3.3 C (37.9 F)
n/a
n/a
Sep
38.9 C (102.0 F)
-5.6 C (21.9 F)
n/a
n/a
Oct
33.3 C (91.9 F)
-11.1 C (12.0 F)
n/a
n/a
Nov
26.1 C (79.0 F)
-18.3 C (-0.9 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 Dwight still stand. 1913 holds the most, with 60.
Standing records at Dwight by the year they were set
Year set
Standing records
1896
48
1897
51
1898
41
1899
42
1900
30
1901
54
1902
35
1903
24
1906
26
1907
30
1908
37
1909
51
1910
50
1911
47
1912
44
1913
60
1914
42
1915
41
1916
51
1917
41
1918
55
1919
15
1920
45
1921
39
1922
35
1923
24
1924
29
1925
59
1926
32
1927
39
1935
1
1938
10
1939
20
1940
25
1941
20
1942
34
1943
25
1944
21
1945
31
1946
26
1947
25
1948
9
All-Time Record Progression
1 new records
1 all-time records were set at Dwight between 27 August 1942 and 27 August 1942. Each dot is a new record.
When Dwight set new all-time records
Date
Kind
Detail
1942-08-27
Record daily precipitation
Record daily precipitation 141.0 mm (5.6 in)
Wettest Day of Each Month
Aug: 141.0 mm (5.6 in)
The wettest day on record for each calendar month at Dwight. The most was 141.0 mm (5.6 in) on 27 August 1942.
Record daily precipitation for each month at Dwight
Month
Record daily precipitation (mm)
Date
Jan
51.8 mm (2.0 in)
2 January 1897
Feb
73.7 mm (2.9 in)
6 February 1942
Mar
57.9 mm (2.3 in)
26 March 1898
Apr
64.5 mm (2.5 in)
6 April 1938
May
59.2 mm (2.3 in)
24 May 1902
Jun
81.3 mm (3.2 in)
13 June 1946
Jul
82.3 mm (3.2 in)
17 July 1950
Aug
141.0 mm (5.6 in)
27 August 1942
Sep
58.9 mm (2.3 in)
2 September 1934
Oct
63.5 mm (2.5 in)
6 October 1941
Nov
51.8 mm (2.0 in)
29 November 1919
Dec
87.1 mm (3.4 in)
21 December 1949
Period of Record Coverage
1896 to 1948
Complete yearUnder 90 percent of days
43 years of record at Dwight, 1896 to 1948. 7 years have data for under 90 percent of days and are left out of rankings: 1896, 1899, 1903, 1905, 1935, 1938, 1948.
Cooler than the station meanWarmer than the station mean
One stripe for each of 34 complete years at Dwight, 1897 to 1946. Blue stripes are years cooler than the station's own mean of 10.3 C (50.5 F); red stripes are warmer. The coolest year was 1917, at 8.5 C (47.2 F), and the warmest was 1921, at 12.5 C (54.4 F). The strongest colour marks a difference of 2.2 C (4.0 F).
Annual mean temperature at Dwight as warming stripes, 1897 to 1946
Year
Annual mean temperature
Difference from the station mean
1897
10.0 C
-0.31 C
1898
10.1 C
-0.17 C
1901
9.7 C
-0.53 C
1902
10.0 C
-0.30 C
1906
10.7 C
+0.43 C
1907
9.7 C
-0.55 C
1908
11.1 C
+0.84 C
1909
10.1 C
-0.19 C
1910
10.3 C
+0.02 C
1911
11.1 C
+0.83 C
1912
9.4 C
-0.91 C
1913
11.1 C
+0.85 C
1914
10.7 C
+0.38 C
1915
10.0 C
-0.28 C
1916
10.3 C
+0.01 C
1917
8.5 C
-1.80 C
1918
10.1 C
-0.15 C
1919
10.7 C
+0.38 C
1920
10.0 C
-0.32 C
1921
12.5 C
+2.19 C
1922
11.2 C
+0.89 C
1923
10.3 C
+0.03 C
1924
8.9 C
-1.39 C
1925
10.1 C
-0.13 C
1926
9.4 C
-0.92 C
1927
10.6 C
+0.31 C
1939
11.2 C
+0.90 C
1940
9.7 C
-0.59 C
1941
11.2 C
+0.89 C
1942
10.4 C
+0.15 C
1943
9.8 C
-0.50 C
1944
10.3 C
+0.05 C
1945
9.4 C
-0.83 C
1946
11.0 C
+0.68 C
The fitted trend in annual mean temperature here over 1897 to 1946 is 0.04 C (-0.15 to 0.23) per decade. The interval includes zero, so the trend is not clearly different from zero. In Fahrenheit: 0.1 F (-0.3 to 0.4) per decade. The slope is a straight line fitted to 34 complete years; the brackets give its 95 percent interval.
Fitted temperature trends per decade at Dwight
Measure
Per decade (C)
Per decade (F)
Period
Complete years
Reading
Annual mean temperature
0.04 C (-0.15 to 0.23) per decade
0.1 F (-0.3 to 0.4) per decade
1897 to 1946
34
Not clearly different from zero
Mean daily maximum
-0.25 C (-0.46 to -0.04) per decade
-0.4 F (-0.8 to -0.1) per decade
1897 to 1946
34
Fall
Mean daily minimum
0.3 C (0.1 to 0.5) per decade
0.6 F (0.2 to 0.9) per decade
1897 to 1946
34
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
1896 to 1950
Yearly extremes at Dwight: the record and the median year
Measure
Record
Year of the record
Median year
Years with a value
Hottest day (TXx)
41.1 C (106.0 F)
1913
37.2 C (99.0 F)
43
Coldest night (TNn)
-31.7 C (-25.1 F)
1924
-23.3 C (-9.9 F)
43
Wettest day (Rx1day)
141.0 mm (5.6 in)
1942
53.8 mm (2.1 in)
49
Wettest five days (Rx5day)
160.6 mm (6.3 in)
1942
86.9 mm (3.4 in)
49
Longest dry spell (CDD)
45 days
1916
21 days
49
Hottest day (TXx)
The hottest day of the year at Dwight, 1896 to 1950. The record is 41.1 C (106.0 F) in 1913, marked on the chart; the median year is 37.2 C (99.0 F).
Hottest day (TXx) at Dwight by year
Year
Hottest day (TXx)
1896
37.8 C (100.0 F)
1897
37.8 C (100.0 F)
1898
37.2 C (99.0 F)
1899
36.1 C (97.0 F)
1900
35.6 C (96.1 F)
1901
39.4 C (102.9 F)
1902
34.4 C (93.9 F)
1903
34.4 C (93.9 F)
1905
10.6 C (51.1 F)
1906
36.1 C (97.0 F)
1907
35.6 C (96.1 F)
1908
37.2 C (99.0 F)
1909
36.1 C (97.0 F)
1910
37.2 C (99.0 F)
1911
40.6 C (105.1 F)
1912
37.2 C (99.0 F)
1913
41.1 C (106.0 F)
1914
40.0 C (104.0 F)
1915
32.8 C (91.0 F)
1916
41.1 C (106.0 F)
1917
38.9 C (102.0 F)
1918
40.6 C (105.1 F)
1919
38.3 C (100.9 F)
1920
37.8 C (100.0 F)
1921
37.2 C (99.0 F)
1922
38.9 C (102.0 F)
1923
37.8 C (100.0 F)
1924
35.0 C (95.0 F)
1925
37.8 C (100.0 F)
1926
37.8 C (100.0 F)
1927
37.2 C (99.0 F)
1928
n/a
1934
n/a
1935
33.3 C (91.9 F)
1936
n/a
1937
n/a
1938
34.4 C (93.9 F)
1939
35.6 C (96.1 F)
1940
37.8 C (100.0 F)
1941
35.6 C (96.1 F)
1942
33.3 C (91.9 F)
1943
33.3 C (91.9 F)
1944
34.4 C (93.9 F)
1945
34.4 C (93.9 F)
1946
34.4 C (93.9 F)
1947
36.7 C (98.1 F)
1948
28.3 C (82.9 F)
1949
n/a
1950
n/a
Coldest night (TNn)
The coldest night of the year at Dwight, 1896 to 1950. The record is -31.7 C (-25.1 F) in 1924, marked on the chart; the median year is -23.3 C (-9.9 F).
Coldest night (TNn) at Dwight by year
Year
Coldest night (TNn)
1896
-17.2 C (1.0 F)
1897
-28.9 C (-20.0 F)
1898
-22.2 C (-8.0 F)
1899
-30.0 C (-22.0 F)
1900
-23.3 C (-9.9 F)
1901
-27.2 C (-17.0 F)
1902
-23.9 C (-11.0 F)
1903
-24.4 C (-11.9 F)
1905
-17.8 C (0.0 F)
1906
-17.2 C (1.0 F)
1907
-22.2 C (-8.0 F)
1908
-20.0 C (-4.0 F)
1909
-26.1 C (-15.0 F)
1910
-23.3 C (-9.9 F)
1911
-20.6 C (-5.1 F)
1912
-27.2 C (-17.0 F)
1913
-22.2 C (-8.0 F)
1914
-28.9 C (-20.0 F)
1915
-28.9 C (-20.0 F)
1916
-26.1 C (-15.0 F)
1917
-27.2 C (-17.0 F)
1918
-28.3 C (-18.9 F)
1919
-25.0 C (-13.0 F)
1920
-27.2 C (-17.0 F)
1921
-16.1 C (3.0 F)
1922
-23.9 C (-11.0 F)
1923
-22.2 C (-8.0 F)
1924
-31.7 C (-25.1 F)
1925
-22.8 C (-9.0 F)
1926
-21.7 C (-7.1 F)
1927
-31.1 C (-24.0 F)
1928
n/a
1934
n/a
1935
0.6 C (33.1 F)
1936
n/a
1937
n/a
1938
-15.6 C (3.9 F)
1939
-16.7 C (1.9 F)
1940
-25.6 C (-14.1 F)
1941
-19.4 C (-2.9 F)
1942
-23.3 C (-9.9 F)
1943
-22.8 C (-9.0 F)
1944
-23.9 C (-11.0 F)
1945
-22.8 C (-9.0 F)
1946
-18.9 C (-2.0 F)
1947
-18.9 C (-2.0 F)
1948
-21.1 C (-6.0 F)
1949
n/a
1950
n/a
Wettest day (Rx1day)
The wettest day of the year at Dwight, 1896 to 1950. The record is 141.0 mm (5.6 in) in 1942, marked on the chart; the median year is 53.8 mm (2.1 in).
Wettest day (Rx1day) at Dwight by year
Year
Wettest day (Rx1day)
1896
62.7 mm (2.5 in)
1897
51.8 mm (2.0 in)
1898
57.9 mm (2.3 in)
1899
57.4 mm (2.3 in)
1900
41.1 mm (1.6 in)
1901
36.3 mm (1.4 in)
1902
59.2 mm (2.3 in)
1903
38.1 mm (1.5 in)
1905
17.0 mm (0.7 in)
1906
51.6 mm (2.0 in)
1907
61.2 mm (2.4 in)
1908
30.2 mm (1.2 in)
1909
47.0 mm (1.9 in)
1910
73.7 mm (2.9 in)
1911
37.1 mm (1.5 in)
1912
47.2 mm (1.9 in)
1913
49.5 mm (1.9 in)
1914
31.0 mm (1.2 in)
1915
78.0 mm (3.1 in)
1916
49.0 mm (1.9 in)
1917
40.1 mm (1.6 in)
1918
47.2 mm (1.9 in)
1919
51.8 mm (2.0 in)
1920
51.8 mm (2.0 in)
1921
75.4 mm (3.0 in)
1922
58.4 mm (2.3 in)
1923
71.6 mm (2.8 in)
1924
75.4 mm (3.0 in)
1925
46.7 mm (1.8 in)
1926
54.4 mm (2.1 in)
1927
58.9 mm (2.3 in)
1928
12.7 mm (0.5 in)
1934
58.9 mm (2.3 in)
1935
48.3 mm (1.9 in)
1936
48.3 mm (1.9 in)
1937
38.6 mm (1.5 in)
1938
64.5 mm (2.5 in)
1939
43.2 mm (1.7 in)
1940
62.0 mm (2.4 in)
1941
66.0 mm (2.6 in)
1942
141.0 mm (5.6 in)
1943
75.4 mm (3.0 in)
1944
53.8 mm (2.1 in)
1945
53.1 mm (2.1 in)
1946
81.3 mm (3.2 in)
1947
61.0 mm (2.4 in)
1948
58.4 mm (2.3 in)
1949
87.1 mm (3.4 in)
1950
82.3 mm (3.2 in)
Wettest five days (Rx5day)
The wettest five days of the year at Dwight, 1896 to 1950. The record is 160.6 mm (6.3 in) in 1942, marked on the chart; the median year is 86.9 mm (3.4 in).
Wettest five days (Rx5day) at Dwight by year
Year
Wettest five days (Rx5day)
1896
89.7 mm (3.5 in)
1897
102.2 mm (4.0 in)
1898
76.4 mm (3.0 in)
1899
78.5 mm (3.1 in)
1900
73.2 mm (2.9 in)
1901
50.3 mm (2.0 in)
1902
118.4 mm (4.7 in)
1903
74.2 mm (2.9 in)
1905
19.0 mm (0.7 in)
1906
77.5 mm (3.1 in)
1907
128.3 mm (5.1 in)
1908
53.1 mm (2.1 in)
1909
95.9 mm (3.8 in)
1910
88.5 mm (3.5 in)
1911
48.0 mm (1.9 in)
1912
67.1 mm (2.6 in)
1913
79.0 mm (3.1 in)
1914
62.5 mm (2.5 in)
1915
99.1 mm (3.9 in)
1916
61.8 mm (2.4 in)
1917
91.4 mm (3.6 in)
1918
84.5 mm (3.3 in)
1919
85.1 mm (3.4 in)
1920
103.4 mm (4.1 in)
1921
92.9 mm (3.7 in)
1922
75.9 mm (3.0 in)
1923
102.3 mm (4.0 in)
1924
158.7 mm (6.2 in)
1925
79.3 mm (3.1 in)
1926
116.7 mm (4.6 in)
1927
154.7 mm (6.1 in)
1928
29.5 mm (1.2 in)
1934
86.9 mm (3.4 in)
1935
78.3 mm (3.1 in)
1936
95.3 mm (3.8 in)
1937
51.6 mm (2.0 in)
1938
85.3 mm (3.4 in)
1939
57.0 mm (2.2 in)
1940
89.4 mm (3.5 in)
1941
137.8 mm (5.4 in)
1942
160.6 mm (6.3 in)
1943
107.8 mm (4.2 in)
1944
92.2 mm (3.6 in)
1945
87.4 mm (3.4 in)
1946
149.2 mm (5.9 in)
1947
76.2 mm (3.0 in)
1948
70.4 mm (2.8 in)
1949
110.0 mm (4.3 in)
1950
122.2 mm (4.8 in)
Longest dry spell (CDD)
The longest dry spell of the year at Dwight, 1896 to 1950. The record is 45 days in 1916, marked on the chart; the median year is 21 days.
Longest dry spell (CDD) at Dwight by year
Year
Longest dry spell (CDD)
1896
20 days
1897
24 days
1898
21 days
1899
17 days
1900
19 days
1901
29 days
1902
20 days
1903
21 days
1905
18 days
1906
20 days
1907
21 days
1908
25 days
1909
16 days
1910
20 days
1911
18 days
1912
18 days
1913
19 days
1914
27 days
1915
29 days
1916
45 days
1917
22 days
1918
17 days
1919
22 days
1920
29 days
1921
13 days
1922
17 days
1923
14 days
1924
23 days
1925
17 days
1926
11 days
1927
25 days
1928
18 days
1934
20 days
1935
16 days
1936
26 days
1937
13 days
1938
22 days
1939
24 days
1940
34 days
1941
28 days
1942
28 days
1943
21 days
1944
30 days
1945
15 days
1946
23 days
1947
20 days
1948
22 days
1949
21 days
1950
17 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
34 years with a frost
Across 34 years with a frost, the median last spring frost at Dwight falls on 1 May and the median first autumn frost on 13 October, which leaves a median of 166 days between them.
Fitted over all years, the growing season changes by +0.8 days per decade at this station.
Frost dates and growing season at Dwight
Measure
Median, all years
Earliest period
Recent period (1906 to 1946)
Recent against earliest
Fitted trend
Last spring frost
1 May
n/a
2 May
n/a
+0.4 days per decade
First autumn frost
13 October
n/a
12 October
n/a
+1.1 days per decade
Growing days
166 days
n/a
165 days
n/a
+0.8 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
44 years, 1897 to 1950
A day with at least 54.5 mm (2.1 in) of rain is expected about once in 2 years. A day with at least 119.1 mm (4.7 in) of rain is expected about once in 100 years.
Rainfall return levels at Dwight: the daily rain expected about once in a given number of years
Expected about once in
A day with at least
Note
2 years
54.5 mm (2.1 in)
5 years
70.2 mm (2.8 in)
10 years
81.2 mm (3.2 in)
25 years
95.9 mm (3.8 in)
50 years
107.3 mm (4.2 in)
Longer than the 44 years of record
100 years
119.1 mm (4.7 in)
Longer than the 44 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, 44 years of values from 1897 to 1950.
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: 141.0 mm (5.6 in) in 1942; 87.1 mm (3.4 in) in 1949; 82.3 mm (3.2 in) in 1950.
Download the Data
Data for Dwight standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Dwight 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 2026-10-16 (16 October 2026). Records are computed by this site and are not official.