Record envelope, standing records and threshold days for Anna 4 N (USC00110187), Illinois, United States, with 132 years of record.
Key Facts for Anna 4 N
Anna 4 N (USC00110187) is a weather station in Illinois, United States at 37.52 latitude and -89.25 longitude, 181 m (593 ft) above sea level.
The station reports from 1895 to 2026, 132 years of record.
1,464 records set at Anna 4 N still stand.
Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
Anna 4 N set a daily record low maximum temperature of 22.8 C (73.0 F) on 2 August 2026.
About the Station
Location: Illinois, United States, 37.52 latitude, -89.25 longitude.
Elevation: 181 m (593 ft).
Period of record: 1895 to 2026, 132 years.
Eligible elements: tmax, tmin, prcp, snow, snwd.
Daily Record Envelope and 2026
3 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 Anna 4 N. The lines show the 2026 daily maximum and minimum. 3 days in 2026 matched or passed a record. Temperatures are in degrees Celsius.
Daily record high and record low at Anna 4 N, 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)
19.4 C (66.9 F)
-17.2 C (1.0 F)
Feb
25.6 C (78.1 F)
-28.3 C (-18.9 F)
21.7 C (71.1 F)
-14.4 C (6.1 F)
Mar
32.8 C (91.0 F)
-17.8 C (0.0 F)
30.6 C (87.1 F)
-7.8 C (18.0 F)
Apr
33.3 C (91.9 F)
-6.7 C (19.9 F)
28.9 C (84.0 F)
2.2 C (36.0 F)
May
36.7 C (98.1 F)
-0.6 C (30.9 F)
29.4 C (84.9 F)
2.2 C (36.0 F)
Jun
40.6 C (105.1 F)
3.9 C (39.0 F)
32.8 C (91.0 F)
11.1 C (52.0 F)
Jul
44.4 C (111.9 F)
7.8 C (46.0 F)
34.4 C (93.9 F)
16.1 C (61.0 F)
Aug
43.3 C (109.9 F)
7.2 C (45.0 F)
35.0 C (95.0 F)
15.6 C (60.1 F)
Sep
41.7 C (107.1 F)
0.0 C (32.0 F)
37.8 C (100.0 F)
10.0 C (50.0 F)
Oct
35.0 C (95.0 F)
-6.7 C (19.9 F)
31.7 C (89.1 F)
7.8 C (46.0 F)
Nov
28.3 C (82.9 F)
-20.6 C (-5.1 F)
n/a
n/a
Dec
24.4 C (75.9 F)
-25.6 C (-14.1 F)
n/a
n/a
Which Years Hold Standing Records
1,464 standing records
Year with most
1,464 records at Anna 4 N still stand. 1911 holds the most, with 44.
Standing records at Anna 4 N by the year they were set
Year set
Standing records
1895
8
1896
21
1897
22
1898
13
1899
37
1900
10
1901
41
1902
26
1903
14
1904
6
1905
11
1906
19
1907
13
1908
13
1909
11
1910
21
1911
44
1912
10
1913
27
1914
8
1915
14
1916
12
1917
21
1918
18
1919
5
1920
8
1921
7
1922
5
1923
14
1924
17
1925
26
1926
10
1927
19
1928
14
1929
16
1930
30
1931
19
1932
11
1933
12
1934
13
1935
11
1936
37
1937
11
1938
9
1939
6
1940
15
1941
6
1942
13
1943
16
1944
4
1945
10
1946
5
1947
7
1948
7
1949
8
1950
22
1951
15
1952
15
1953
12
1954
6
1955
11
1956
4
1957
1
1958
7
1959
8
1960
10
1961
4
1962
10
1963
12
1964
7
1965
12
1966
11
1967
16
1968
5
1969
6
1970
5
1971
5
1972
13
1973
3
1974
15
1975
4
1976
9
1977
6
1978
5
1979
6
1980
14
1981
5
1982
14
1983
9
1984
6
1985
6
1986
13
1987
6
1988
6
1989
16
1990
9
1991
12
1992
4
1993
6
1994
6
1995
5
1996
17
1997
15
1998
15
1999
10
2000
11
2001
8
2002
8
2003
15
2004
11
2005
8
2006
8
2007
6
2008
10
2009
4
2010
5
2011
12
2012
26
2013
8
2022
3
2023
3
2024
9
2025
10
2026
9
All-Time Record Progression
5 new records
5 all-time records were set at Anna 4 N between 25 February 1979 and 18 March 2008. Each dot is a new record.
When Anna 4 N set new all-time records
Date
Kind
Detail
1979-02-25
Record daily snowfall
Record daily snowfall 50.8 cm (20.0 in)
1979-02-25
Record snow depth
Record snow depth 50.8 cm (20.0 in)
1999-01-22
Record daily precipitation
Record daily precipitation 170.2 mm (6.7 in)
2006-08-01
Record high minimum temperature
Record high minimum temperature 31.1 C (88.0 F)
2008-03-18
Record daily precipitation
Record daily precipitation 196.6 mm (7.7 in)
Wettest Day of Each Month
Mar: 196.6 mm (7.7 in)
The wettest day on record for each calendar month at Anna 4 N. The most was 196.6 mm (7.7 in) on 18 March 2008.
Record daily precipitation for each month at Anna 4 N
Month
Record daily precipitation (mm)
Date
Jan
170.2 mm (6.7 in)
22 January 1999
Feb
102.6 mm (4.0 in)
26 February 1945
Mar
196.6 mm (7.7 in)
18 March 2008
Apr
120.7 mm (4.8 in)
29 April 2017
May
120.9 mm (4.8 in)
31 May 1997
Jun
123.4 mm (4.9 in)
28 June 1983
Jul
156.2 mm (6.1 in)
27 July 1909
Aug
113.0 mm (4.4 in)
17 August 1959
Sep
113.0 mm (4.4 in)
23 September 1993
Oct
129.5 mm (5.1 in)
4 October 1910
Nov
158.5 mm (6.2 in)
15 November 2005
Dec
130.8 mm (5.1 in)
13 December 1918
Period of Record Coverage
1895 to 2026
Complete yearUnder 90 percent of days
124 years of record at Anna 4 N, 1895 to 2026. 9 years have data for under 90 percent of days and are left out of rankings: 1895, 1900, 1925, 2008, 2009, 2012, 2013, 2022 and others.
Cooler than the station meanWarmer than the station mean
One stripe for each of 105 complete years at Anna 4 N, 1897 to 2025. Blue stripes are years cooler than the station's own mean of 14.0 C (57.2 F); red stripes are warmer. The coolest year was 1979, at 12.5 C (54.4 F), and the warmest was 1921, at 16.1 C (61.0 F). The strongest colour marks a difference of 2.2 C (4.0 F).
Annual mean temperature at Anna 4 N as warming stripes, 1897 to 2025
Year
Annual mean temperature
Difference from the station mean
1897
14.1 C
+0.09 C
1898
13.8 C
-0.22 C
1899
13.4 C
-0.57 C
1901
14.0 C
+0.01 C
1902
14.2 C
+0.19 C
1903
13.7 C
-0.31 C
1904
13.3 C
-0.75 C
1905
13.7 C
-0.27 C
1906
13.8 C
-0.17 C
1907
13.9 C
-0.08 C
1908
15.1 C
+1.10 C
1909
14.8 C
+0.84 C
1910
14.4 C
+0.35 C
1911
15.4 C
+1.40 C
1913
15.2 C
+1.20 C
1916
14.6 C
+0.60 C
1917
13.2 C
-0.82 C
1919
14.9 C
+0.94 C
1920
14.1 C
+0.05 C
1921
16.1 C
+2.11 C
1922
15.3 C
+1.29 C
1923
14.7 C
+0.71 C
1924
13.5 C
-0.46 C
1926
13.7 C
-0.33 C
1928
13.5 C
-0.49 C
1929
13.2 C
-0.78 C
1931
15.4 C
+1.43 C
1933
15.3 C
+1.26 C
1934
14.8 C
+0.77 C
1935
14.0 C
+0.02 C
1936
14.5 C
+0.47 C
1937
13.6 C
-0.44 C
1938
15.3 C
+1.25 C
1939
14.8 C
+0.84 C
1940
12.9 C
-1.08 C
1941
14.6 C
+0.57 C
1942
13.5 C
-0.54 C
1943
13.9 C
-0.06 C
1944
14.3 C
+0.32 C
1945
13.4 C
-0.57 C
1946
14.7 C
+0.71 C
1947
13.4 C
-0.61 C
1948
13.6 C
-0.45 C
1949
14.2 C
+0.21 C
1950
13.2 C
-0.85 C
1951
13.2 C
-0.82 C
1952
14.5 C
+0.52 C
1953
15.0 C
+1.04 C
1954
15.0 C
+0.95 C
1955
14.3 C
+0.30 C
1956
14.5 C
+0.47 C
1957
14.2 C
+0.15 C
1958
13.1 C
-0.92 C
1959
14.3 C
+0.27 C
1960
13.3 C
-0.70 C
1961
13.6 C
-0.45 C
1962
13.9 C
-0.12 C
1963
13.5 C
-0.47 C
1964
14.2 C
+0.23 C
1965
14.2 C
+0.18 C
1966
13.1 C
-0.93 C
1967
13.4 C
-0.59 C
1968
13.2 C
-0.78 C
1969
13.2 C
-0.81 C
1970
13.5 C
-0.47 C
1971
14.0 C
+0.02 C
1972
13.1 C
-0.86 C
1973
14.1 C
+0.07 C
1974
13.8 C
-0.24 C
1975
13.8 C
-0.23 C
1976
13.1 C
-0.88 C
1977
13.8 C
-0.21 C
1978
12.8 C
-1.24 C
1979
12.5 C
-1.53 C
1980
13.9 C
-0.12 C
1981
13.9 C
-0.14 C
1982
13.6 C
-0.43 C
1983
13.7 C
-0.28 C
1984
13.8 C
-0.23 C
1985
13.4 C
-0.60 C
1986
14.5 C
+0.54 C
1987
14.8 C
+0.81 C
1988
13.8 C
-0.18 C
1989
13.2 C
-0.84 C
1990
14.7 C
+0.73 C
1991
14.8 C
+0.84 C
1992
14.0 C
-0.01 C
1993
13.4 C
-0.58 C
1994
13.8 C
-0.17 C
1995
13.5 C
-0.53 C
1996
12.6 C
-1.38 C
1997
12.8 C
-1.24 C
1998
14.9 C
+0.87 C
1999
14.6 C
+0.61 C
2000
13.9 C
-0.12 C
2001
13.9 C
-0.06 C
2002
13.9 C
-0.11 C
2003
12.9 C
-1.06 C
2004
13.6 C
-0.42 C
2005
14.1 C
+0.14 C
2010
14.8 C
+0.76 C
2011
15.5 C
+1.51 C
2023
14.4 C
+0.36 C
2024
14.7 C
+0.66 C
2025
13.6 C
-0.38 C
The fitted trend in annual mean temperature here over 1897 to 2025 is -0.04 C (-0.08 to 0.00) per decade. The interval includes zero, so the trend is not clearly different from zero. In Fahrenheit: -0.07 F (-0.15 to 0.00) per decade. The slope is a straight line fitted to 105 complete years; the brackets give its 95 percent interval.
Fitted temperature trends per decade at Anna 4 N
Measure
Per decade (C)
Per decade (F)
Period
Complete years
Reading
Annual mean temperature
-0.04 C (-0.08 to 0.00) per decade
-0.07 F (-0.15 to 0.00) per decade
1897 to 2025
105
Not clearly different from zero
Mean daily maximum
-0.04 C (-0.09 to 0.01) per decade
-0.08 F (-0.17 to 0.01) per decade
1897 to 2025
105
Not clearly different from zero
Mean daily minimum
-0.04 C (-0.08 to 0.01) per decade
-0.06 F (-0.14 to 0.01) per decade
1897 to 2025
105
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
1895 to 2026
Yearly extremes at Anna 4 N: the record and the median year
Measure
Record
Year of the record
Median year
Years with a value
Hottest day (TXx)
44.4 C (111.9 F)
1901
37.0 C (98.5 F)
124
Coldest night (TNn)
-28.9 C (-20.0 F)
1918
-18.3 C (-0.9 F)
124
Wettest day (Rx1day)
196.6 mm (7.7 in)
2008
77.5 mm (3.1 in)
129
Wettest five days (Rx5day)
318.6 mm (12.5 in)
2011
119.7 mm (4.7 in)
129
Longest dry spell (CDD)
44 days
1965
20 days
129
Hottest day (TXx)
The hottest day of the year at Anna 4 N, 1895 to 2026. The record is 44.4 C (111.9 F) in 1901, marked on the chart; the median year is 37.0 C (98.5 F).
Hottest day (TXx) at Anna 4 N by year
Year
Hottest day (TXx)
1895
35.0 C (95.0 F)
1896
38.9 C (102.0 F)
1897
38.9 C (102.0 F)
1898
35.0 C (95.0 F)
1899
40.6 C (105.1 F)
1900
40.6 C (105.1 F)
1901
44.4 C (111.9 F)
1902
39.4 C (102.9 F)
1903
37.8 C (100.0 F)
1904
35.6 C (96.1 F)
1905
37.2 C (99.0 F)
1906
36.7 C (98.1 F)
1907
37.2 C (99.0 F)
1908
36.7 C (98.1 F)
1909
38.9 C (102.0 F)
1910
36.7 C (98.1 F)
1911
39.4 C (102.9 F)
1912
38.3 C (100.9 F)
1913
40.0 C (104.0 F)
1914
40.0 C (104.0 F)
1915
35.0 C (95.0 F)
1916
37.2 C (99.0 F)
1917
37.2 C (99.0 F)
1918
41.7 C (107.1 F)
1919
40.6 C (105.1 F)
1920
36.1 C (97.0 F)
1921
38.3 C (100.9 F)
1922
37.8 C (100.0 F)
1923
37.8 C (100.0 F)
1924
36.1 C (97.0 F)
1925
41.7 C (107.1 F)
1926
40.0 C (104.0 F)
1927
35.6 C (96.1 F)
1928
35.0 C (95.0 F)
1929
35.6 C (96.1 F)
1930
43.3 C (109.9 F)
1931
38.3 C (100.9 F)
1932
37.8 C (100.0 F)
1933
37.8 C (100.0 F)
1934
42.8 C (109.0 F)
1935
37.2 C (99.0 F)
1936
42.2 C (108.0 F)
1937
36.1 C (97.0 F)
1938
36.7 C (98.1 F)
1939
36.7 C (98.1 F)
1940
35.0 C (95.0 F)
1941
37.2 C (99.0 F)
1942
34.4 C (93.9 F)
1943
37.8 C (100.0 F)
1944
36.1 C (97.0 F)
1945
36.7 C (98.1 F)
1946
35.6 C (96.1 F)
1947
39.4 C (102.9 F)
1948
37.2 C (99.0 F)
1949
35.0 C (95.0 F)
1950
35.0 C (95.0 F)
1951
37.2 C (99.0 F)
1952
41.7 C (107.1 F)
1953
38.9 C (102.0 F)
1954
39.4 C (102.9 F)
1955
36.7 C (98.1 F)
1956
37.8 C (100.0 F)
1957
35.6 C (96.1 F)
1958
34.4 C (93.9 F)
1959
35.6 C (96.1 F)
1960
37.2 C (99.0 F)
1961
33.9 C (93.0 F)
1962
38.3 C (100.9 F)
1963
36.1 C (97.0 F)
1964
41.1 C (106.0 F)
1965
37.2 C (99.0 F)
1966
40.0 C (104.0 F)
1967
35.0 C (95.0 F)
1968
36.7 C (98.1 F)
1969
37.2 C (99.0 F)
1970
36.1 C (97.0 F)
1971
36.7 C (98.1 F)
1972
35.6 C (96.1 F)
1973
35.6 C (96.1 F)
1974
37.2 C (99.0 F)
1975
35.0 C (95.0 F)
1976
37.2 C (99.0 F)
1977
36.1 C (97.0 F)
1978
38.9 C (102.0 F)
1979
35.0 C (95.0 F)
1980
40.0 C (104.0 F)
1981
35.6 C (96.1 F)
1982
37.8 C (100.0 F)
1983
38.3 C (100.9 F)
1984
35.6 C (96.1 F)
1985
35.6 C (96.1 F)
1986
36.1 C (97.0 F)
1987
39.4 C (102.9 F)
1988
37.8 C (100.0 F)
1989
34.4 C (93.9 F)
1990
36.1 C (97.0 F)
1991
36.7 C (98.1 F)
1992
34.4 C (93.9 F)
1993
36.1 C (97.0 F)
1994
35.6 C (96.1 F)
1995
36.7 C (98.1 F)
1996
34.4 C (93.9 F)
1997
36.7 C (98.1 F)
1998
39.4 C (102.9 F)
1999
37.8 C (100.0 F)
2000
37.2 C (99.0 F)
2001
35.0 C (95.0 F)
2002
36.7 C (98.1 F)
2003
36.7 C (98.1 F)
2004
35.6 C (96.1 F)
2005
35.0 C (95.0 F)
2006
35.0 C (95.0 F)
2007
38.9 C (102.0 F)
2008
35.6 C (96.1 F)
2009
35.0 C (95.0 F)
2010
38.9 C (102.0 F)
2011
37.2 C (99.0 F)
2012
40.6 C (105.1 F)
2013
36.1 C (97.0 F)
2017
n/a
2018
n/a
2019
n/a
2020
n/a
2021
n/a
2022
36.1 C (97.0 F)
2023
37.2 C (99.0 F)
2024
35.6 C (96.1 F)
2025
35.0 C (95.0 F)
2026
37.8 C (100.0 F)
Coldest night (TNn)
The coldest night of the year at Anna 4 N, 1895 to 2026. The record is -28.9 C (-20.0 F) in 1918, marked on the chart; the median year is -18.3 C (-0.9 F).
Coldest night (TNn) at Anna 4 N by year
Year
Coldest night (TNn)
1895
6.7 C (44.1 F)
1896
-12.8 C (9.0 F)
1897
-18.9 C (-2.0 F)
1898
-22.8 C (-9.0 F)
1899
-28.3 C (-18.9 F)
1900
-21.1 C (-6.0 F)
1901
-23.3 C (-9.9 F)
1902
-16.1 C (3.0 F)
1903
-21.7 C (-7.1 F)
1904
-20.6 C (-5.1 F)
1905
-25.0 C (-13.0 F)
1906
-21.1 C (-6.0 F)
1907
-15.0 C (5.0 F)
1908
-13.9 C (7.0 F)
1909
-20.6 C (-5.1 F)
1910
-20.0 C (-4.0 F)
1911
-18.3 C (-0.9 F)
1912
-27.8 C (-18.0 F)
1913
-14.4 C (6.1 F)
1914
-18.9 C (-2.0 F)
1915
-15.0 C (5.0 F)
1916
-18.9 C (-2.0 F)
1917
-23.3 C (-9.9 F)
1918
-28.9 C (-20.0 F)
1919
-17.8 C (0.0 F)
1920
-14.4 C (6.1 F)
1921
-8.9 C (16.0 F)
1922
-12.2 C (10.0 F)
1923
-14.4 C (6.1 F)
1924
-21.1 C (-6.0 F)
1925
-18.3 C (-0.9 F)
1926
-17.2 C (1.0 F)
1927
-20.0 C (-4.0 F)
1928
-21.7 C (-7.1 F)
1929
-19.4 C (-2.9 F)
1930
-26.1 C (-15.0 F)
1931
-13.3 C (8.1 F)
1932
-16.7 C (1.9 F)
1933
-19.4 C (-2.9 F)
1934
-19.4 C (-2.9 F)
1935
-16.7 C (1.9 F)
1936
-22.8 C (-9.0 F)
1937
-13.9 C (7.0 F)
1938
-13.3 C (8.1 F)
1939
-15.0 C (5.0 F)
1940
-23.9 C (-11.0 F)
1941
-13.3 C (8.1 F)
1942
-22.8 C (-9.0 F)
1943
-17.8 C (0.0 F)
1944
-16.1 C (3.0 F)
1945
-16.1 C (3.0 F)
1946
-14.4 C (6.1 F)
1947
-15.6 C (3.9 F)
1948
-20.0 C (-4.0 F)
1949
-15.6 C (3.9 F)
1950
-20.6 C (-5.1 F)
1951
-23.9 C (-11.0 F)
1952
-13.3 C (8.1 F)
1953
-15.0 C (5.0 F)
1954
-15.6 C (3.9 F)
1955
-18.3 C (-0.9 F)
1956
-11.7 C (10.9 F)
1957
-15.0 C (5.0 F)
1958
-18.9 C (-2.0 F)
1959
-19.4 C (-2.9 F)
1960
-18.3 C (-0.9 F)
1961
-18.9 C (-2.0 F)
1962
-22.2 C (-8.0 F)
1963
-24.4 C (-11.9 F)
1964
-17.8 C (0.0 F)
1965
-22.8 C (-9.0 F)
1966
-20.6 C (-5.1 F)
1967
-17.8 C (0.0 F)
1968
-20.6 C (-5.1 F)
1969
-15.6 C (3.9 F)
1970
-22.2 C (-8.0 F)
1971
-17.2 C (1.0 F)
1972
-21.1 C (-6.0 F)
1973
-17.8 C (0.0 F)
1974
-16.7 C (1.9 F)
1975
-13.9 C (7.0 F)
1976
-20.6 C (-5.1 F)
1977
-25.0 C (-13.0 F)
1978
-18.3 C (-0.9 F)
1979
-21.1 C (-6.0 F)
1980
-16.7 C (1.9 F)
1981
-18.9 C (-2.0 F)
1982
-27.2 C (-17.0 F)
1983
-23.3 C (-9.9 F)
1984
-24.4 C (-11.9 F)
1985
-26.7 C (-16.1 F)
1986
-18.3 C (-0.9 F)
1987
-13.3 C (8.1 F)
1988
-16.7 C (1.9 F)
1989
-25.6 C (-14.1 F)
1990
-15.6 C (3.9 F)
1991
-13.3 C (8.1 F)
1992
-15.0 C (5.0 F)
1993
-17.8 C (0.0 F)
1994
-25.0 C (-13.0 F)
1995
-21.1 C (-6.0 F)
1996
-23.3 C (-9.9 F)
1997
-21.1 C (-6.0 F)
1998
-12.8 C (9.0 F)
1999
-16.7 C (1.9 F)
2000
-18.9 C (-2.0 F)
2001
-19.4 C (-2.9 F)
2002
-16.7 C (1.9 F)
2003
-20.6 C (-5.1 F)
2004
-22.2 C (-8.0 F)
2005
-17.2 C (1.0 F)
2006
-15.6 C (3.9 F)
2007
-16.7 C (1.9 F)
2008
-15.6 C (3.9 F)
2009
-12.2 C (10.0 F)
2010
-20.0 C (-4.0 F)
2011
-17.8 C (0.0 F)
2012
-15.0 C (5.0 F)
2013
-12.2 C (10.0 F)
2017
n/a
2018
n/a
2019
n/a
2020
n/a
2021
n/a
2022
-21.1 C (-6.0 F)
2023
-8.9 C (16.0 F)
2024
-17.2 C (1.0 F)
2025
-17.2 C (1.0 F)
2026
-17.2 C (1.0 F)
Wettest day (Rx1day)
The wettest day of the year at Anna 4 N, 1895 to 2026. The record is 196.6 mm (7.7 in) in 2008, marked on the chart; the median year is 77.5 mm (3.1 in).
Wettest day (Rx1day) at Anna 4 N by year
Year
Wettest day (Rx1day)
1895
61.0 mm (2.4 in)
1896
64.0 mm (2.5 in)
1897
61.7 mm (2.4 in)
1898
83.8 mm (3.3 in)
1899
59.7 mm (2.4 in)
1900
96.5 mm (3.8 in)
1901
88.9 mm (3.5 in)
1902
43.2 mm (1.7 in)
1903
45.7 mm (1.8 in)
1904
85.1 mm (3.4 in)
1905
127.0 mm (5.0 in)
1906
69.9 mm (2.8 in)
1907
53.6 mm (2.1 in)
1908
76.5 mm (3.0 in)
1909
156.2 mm (6.1 in)
1910
129.5 mm (5.1 in)
1911
91.4 mm (3.6 in)
1912
52.1 mm (2.1 in)
1913
87.6 mm (3.4 in)
1914
62.7 mm (2.5 in)
1915
91.4 mm (3.6 in)
1916
58.4 mm (2.3 in)
1917
77.0 mm (3.0 in)
1918
130.8 mm (5.1 in)
1919
66.8 mm (2.6 in)
1920
59.7 mm (2.4 in)
1921
75.9 mm (3.0 in)
1922
81.0 mm (3.2 in)
1923
97.8 mm (3.9 in)
1924
52.8 mm (2.1 in)
1925
86.4 mm (3.4 in)
1926
44.2 mm (1.7 in)
1927
104.4 mm (4.1 in)
1928
95.5 mm (3.8 in)
1929
63.5 mm (2.5 in)
1930
50.8 mm (2.0 in)
1931
86.9 mm (3.4 in)
1932
92.7 mm (3.6 in)
1933
72.4 mm (2.9 in)
1934
128.3 mm (5.1 in)
1935
118.1 mm (4.6 in)
1936
61.0 mm (2.4 in)
1937
95.3 mm (3.8 in)
1938
66.3 mm (2.6 in)
1939
84.6 mm (3.3 in)
1940
50.5 mm (2.0 in)
1941
70.6 mm (2.8 in)
1942
102.9 mm (4.1 in)
1943
98.8 mm (3.9 in)
1944
77.5 mm (3.1 in)
1945
102.6 mm (4.0 in)
1946
63.8 mm (2.5 in)
1947
54.4 mm (2.1 in)
1948
92.2 mm (3.6 in)
1949
74.7 mm (2.9 in)
1950
107.2 mm (4.2 in)
1951
56.4 mm (2.2 in)
1952
76.7 mm (3.0 in)
1953
55.1 mm (2.2 in)
1954
88.4 mm (3.5 in)
1955
75.7 mm (3.0 in)
1956
40.1 mm (1.6 in)
1957
108.0 mm (4.3 in)
1958
114.0 mm (4.5 in)
1959
113.0 mm (4.4 in)
1960
53.6 mm (2.1 in)
1961
65.3 mm (2.6 in)
1962
56.9 mm (2.2 in)
1963
73.9 mm (2.9 in)
1964
137.2 mm (5.4 in)
1965
102.6 mm (4.0 in)
1966
73.7 mm (2.9 in)
1967
58.2 mm (2.3 in)
1968
59.9 mm (2.4 in)
1969
77.0 mm (3.0 in)
1970
70.1 mm (2.8 in)
1971
48.3 mm (1.9 in)
1972
89.7 mm (3.5 in)
1973
120.7 mm (4.8 in)
1974
69.6 mm (2.7 in)
1975
69.1 mm (2.7 in)
1976
81.8 mm (3.2 in)
1977
109.2 mm (4.3 in)
1978
108.5 mm (4.3 in)
1979
96.3 mm (3.8 in)
1980
44.2 mm (1.7 in)
1981
82.8 mm (3.3 in)
1982
112.5 mm (4.4 in)
1983
123.4 mm (4.9 in)
1984
95.3 mm (3.8 in)
1985
100.3 mm (3.9 in)
1986
96.5 mm (3.8 in)
1987
81.3 mm (3.2 in)
1988
51.6 mm (2.0 in)
1989
77.2 mm (3.0 in)
1990
67.3 mm (2.6 in)
1991
80.8 mm (3.2 in)
1992
47.0 mm (1.9 in)
1993
113.0 mm (4.4 in)
1994
94.5 mm (3.7 in)
1995
56.6 mm (2.2 in)
1996
57.7 mm (2.3 in)
1997
120.9 mm (4.8 in)
1998
70.9 mm (2.8 in)
1999
170.2 mm (6.7 in)
2000
105.7 mm (4.2 in)
2001
86.9 mm (3.4 in)
2002
112.3 mm (4.4 in)
2003
90.2 mm (3.6 in)
2004
68.6 mm (2.7 in)
2005
158.5 mm (6.2 in)
2006
105.4 mm (4.1 in)
2007
72.1 mm (2.8 in)
2008
196.6 mm (7.7 in)
2009
71.1 mm (2.8 in)
2010
65.3 mm (2.6 in)
2011
114.0 mm (4.5 in)
2012
51.1 mm (2.0 in)
2013
71.6 mm (2.8 in)
2017
120.7 mm (4.8 in)
2018
92.5 mm (3.6 in)
2019
54.1 mm (2.1 in)
2020
70.1 mm (2.8 in)
2021
67.1 mm (2.6 in)
2022
91.2 mm (3.6 in)
2023
124.7 mm (4.9 in)
2024
68.1 mm (2.7 in)
2025
108.0 mm (4.3 in)
2026
73.7 mm (2.9 in)
Wettest five days (Rx5day)
The wettest five days of the year at Anna 4 N, 1895 to 2026. The record is 318.6 mm (12.5 in) in 2011, marked on the chart; the median year is 119.7 mm (4.7 in).
Wettest five days (Rx5day) at Anna 4 N by year
Year
Wettest five days (Rx5day)
1895
77.5 mm (3.1 in)
1896
109.4 mm (4.3 in)
1897
103.4 mm (4.1 in)
1898
140.0 mm (5.5 in)
1899
123.2 mm (4.9 in)
1900
88.9 mm (3.5 in)
1901
97.8 mm (3.9 in)
1902
94.0 mm (3.7 in)
1903
109.7 mm (4.3 in)
1904
98.6 mm (3.9 in)
1905
144.8 mm (5.7 in)
1906
175.2 mm (6.9 in)
1907
144.3 mm (5.7 in)
1908
109.0 mm (4.3 in)
1909
181.1 mm (7.1 in)
1910
274.2 mm (10.8 in)
1911
179.3 mm (7.1 in)
1912
91.5 mm (3.6 in)
1913
142.1 mm (5.6 in)
1914
79.7 mm (3.1 in)
1915
138.2 mm (5.4 in)
1916
169.9 mm (6.7 in)
1917
96.0 mm (3.8 in)
1918
189.8 mm (7.5 in)
1919
147.6 mm (5.8 in)
1920
98.1 mm (3.9 in)
1921
118.6 mm (4.7 in)
1922
137.6 mm (5.4 in)
1923
99.1 mm (3.9 in)
1924
83.3 mm (3.3 in)
1925
94.5 mm (3.7 in)
1926
61.5 mm (2.4 in)
1927
139.5 mm (5.5 in)
1928
160.5 mm (6.3 in)
1929
83.1 mm (3.3 in)
1930
87.9 mm (3.5 in)
1931
114.6 mm (4.5 in)
1932
140.9 mm (5.5 in)
1933
137.9 mm (5.4 in)
1934
160.0 mm (6.3 in)
1935
171.5 mm (6.8 in)
1936
80.1 mm (3.2 in)
1937
139.2 mm (5.5 in)
1938
119.7 mm (4.7 in)
1939
107.4 mm (4.2 in)
1940
89.1 mm (3.5 in)
1941
102.1 mm (4.0 in)
1942
123.5 mm (4.9 in)
1943
131.5 mm (5.2 in)
1944
123.0 mm (4.8 in)
1945
147.6 mm (5.8 in)
1946
116.1 mm (4.6 in)
1947
87.7 mm (3.5 in)
1948
120.1 mm (4.7 in)
1949
151.6 mm (6.0 in)
1950
176.0 mm (6.9 in)
1951
90.5 mm (3.6 in)
1952
96.7 mm (3.8 in)
1953
78.2 mm (3.1 in)
1954
103.9 mm (4.1 in)
1955
93.5 mm (3.7 in)
1956
86.3 mm (3.4 in)
1957
211.4 mm (8.3 in)
1958
137.1 mm (5.4 in)
1959
115.8 mm (4.6 in)
1960
66.1 mm (2.6 in)
1961
187.4 mm (7.4 in)
1962
99.6 mm (3.9 in)
1963
90.1 mm (3.5 in)
1964
183.7 mm (7.2 in)
1965
135.4 mm (5.3 in)
1966
95.2 mm (3.7 in)
1967
76.8 mm (3.0 in)
1968
106.2 mm (4.2 in)
1969
131.0 mm (5.2 in)
1970
127.3 mm (5.0 in)
1971
69.9 mm (2.8 in)
1972
111.9 mm (4.4 in)
1973
163.1 mm (6.4 in)
1974
144.5 mm (5.7 in)
1975
107.2 mm (4.2 in)
1976
100.3 mm (3.9 in)
1977
175.2 mm (6.9 in)
1978
159.0 mm (6.3 in)
1979
163.1 mm (6.4 in)
1980
51.6 mm (2.0 in)
1981
114.1 mm (4.5 in)
1982
193.5 mm (7.6 in)
1983
217.0 mm (8.5 in)
1984
129.1 mm (5.1 in)
1985
130.8 mm (5.1 in)
1986
217.8 mm (8.6 in)
1987
136.6 mm (5.4 in)
1988
92.7 mm (3.6 in)
1989
107.7 mm (4.2 in)
1990
114.8 mm (4.5 in)
1991
164.9 mm (6.5 in)
1992
91.9 mm (3.6 in)
1993
151.7 mm (6.0 in)
1994
124.5 mm (4.9 in)
1995
94.9 mm (3.7 in)
1996
104.2 mm (4.1 in)
1997
139.9 mm (5.5 in)
1998
84.8 mm (3.3 in)
1999
176.6 mm (7.0 in)
2000
119.4 mm (4.7 in)
2001
154.8 mm (6.1 in)
2002
191.5 mm (7.5 in)
2003
170.5 mm (6.7 in)
2004
104.9 mm (4.1 in)
2005
169.0 mm (6.7 in)
2006
179.1 mm (7.1 in)
2007
92.1 mm (3.6 in)
2008
311.5 mm (12.3 in)
2009
118.1 mm (4.6 in)
2010
102.9 mm (4.1 in)
2011
318.6 mm (12.5 in)
2012
99.9 mm (3.9 in)
2013
87.9 mm (3.5 in)
2017
274.1 mm (10.8 in)
2018
121.2 mm (4.8 in)
2019
103.1 mm (4.1 in)
2020
174.8 mm (6.9 in)
2021
78.0 mm (3.1 in)
2022
106.5 mm (4.2 in)
2023
143.7 mm (5.7 in)
2024
104.7 mm (4.1 in)
2025
183.7 mm (7.2 in)
2026
158.3 mm (6.2 in)
Longest dry spell (CDD)
The longest dry spell of the year at Anna 4 N, 1895 to 2026. The record is 44 days in 1965, marked on the chart; the median year is 20 days.
Longest dry spell (CDD) at Anna 4 N by year
Year
Longest dry spell (CDD)
1895
8 days
1896
26 days
1897
24 days
1898
18 days
1899
23 days
1900
28 days
1901
27 days
1902
30 days
1903
22 days
1904
22 days
1905
17 days
1906
20 days
1907
24 days
1908
43 days
1909
24 days
1910
22 days
1911
20 days
1912
23 days
1913
26 days
1914
42 days
1915
35 days
1916
22 days
1917
27 days
1918
18 days
1919
21 days
1920
26 days
1921
18 days
1922
21 days
1923
15 days
1924
43 days
1925
32 days
1926
26 days
1927
20 days
1928
31 days
1929
21 days
1930
19 days
1931
22 days
1932
15 days
1933
28 days
1934
42 days
1935
17 days
1936
22 days
1937
33 days
1938
30 days
1939
34 days
1940
16 days
1941
18 days
1942
14 days
1943
19 days
1944
29 days
1945
12 days
1946
18 days
1947
20 days
1948
20 days
1949
20 days
1950
20 days
1951
14 days
1952
24 days
1953
23 days
1954
19 days
1955
23 days
1956
19 days
1957
22 days
1958
20 days
1959
16 days
1960
18 days
1961
33 days
1962
18 days
1963
29 days
1964
39 days
1965
44 days
1966
24 days
1967
18 days
1968
17 days
1969
19 days
1970
15 days
1971
17 days
1972
20 days
1973
16 days
1974
27 days
1975
17 days
1976
26 days
1977
21 days
1978
17 days
1979
19 days
1980
23 days
1981
20 days
1982
14 days
1983
20 days
1984
15 days
1985
19 days
1986
16 days
1987
19 days
1988
35 days
1989
22 days
1990
17 days
1991
22 days
1992
20 days
1993
21 days
1994
13 days
1995
26 days
1996
19 days
1997
16 days
1998
33 days
1999
43 days
2000
17 days
2001
14 days
2002
20 days
2003
25 days
2004
27 days
2005
20 days
2006
16 days
2007
16 days
2008
12 days
2009
15 days
2010
15 days
2011
23 days
2012
15 days
2013
19 days
2017
18 days
2018
11 days
2019
11 days
2020
16 days
2021
20 days
2022
26 days
2023
21 days
2024
30 days
2025
18 days
2026
20 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
105 years with a frost
Across 105 years with a frost, the median last spring frost at Anna 4 N falls on 9 April and the median first autumn frost on 27 October, which leaves a median of 199 days between them.
In 1981 to 2025 the median growing season was 197 days. The two periods have the same number of growing days.
Fitted over all years, the growing season changes by -0.1 days per decade at this station.
Frost dates and growing season at Anna 4 N
Measure
Median, all years
Earliest period (1897 to 1935)
Recent period (1981 to 2025)
Recent against earliest
Fitted trend
Last spring frost
9 April
9 April
9 April
no change
+0.1 days per decade
First autumn frost
27 October
25 October
25 October
no change
0.0 days per decade
Growing days
199 days
197 days
197 days
no change
-0.1 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
117 years, 1897 to 2022
A day with at least 79.9 mm (3.1 in) of rain is expected about once in 2 years. A day with at least 172.7 mm (6.8 in) of rain is expected about once in 100 years.
Rainfall return levels at Anna 4 N: the daily rain expected about once in a given number of years
Expected about once in
A day with at least
Note
2 years
79.9 mm (3.1 in)
5 years
105.0 mm (4.1 in)
10 years
121.5 mm (4.8 in)
25 years
142.3 mm (5.6 in)
50 years
157.6 mm (6.2 in)
100 years
172.7 mm (6.8 in)
The levels come from a generalised extreme value (GEV) distribution fitted by L-moments to the wettest-day total of each year, 117 years of values from 1897 to 2022.
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: 196.6 mm (7.7 in) in 2008; 170.2 mm (6.7 in) in 1999; 158.5 mm (6.2 in) in 2005.
Station Changes
2 suspected
2 changes were suspected in the annual mean temperature of Anna 4 N, at 1950 and 1999. Each is measured against neighbouring stations.
Relative to 5 neighbouring stations, the station's annual mean temperature from 1950 ran 0.3 C (0.5 F) higher than in the years before (likely change).
Relative to 5 neighbouring stations, the station's annual mean temperature from 1999 ran 0.5 C (0.9 F) lower than in the years before (likely change).
Suspected changes in the annual mean temperature at Anna 4 N, against neighbouring stations
Year
Shift (C)
Shift (F)
Strength
Neighbours
1950
+0.3
+0.5
likely
5
1999
-0.5
-0.9
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 Anna 4 N standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Anna 4 N 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.