Record envelope, standing records and threshold days for Danbury (USC00471978), Wisconsin, United States, with 93 years of record.
Key Facts for Danbury
Danbury (USC00471978) is a weather station in Wisconsin, United States at 46.01 latitude and -92.37 longitude, 290 m (950 ft) above sea level.
The station reports from 1919 to 2011, 93 years of record.
1,464 records set at Danbury still stand.
Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
Danbury tied a daily record high maximum temperature of 12.8 C (55.0 F) on 17 February 2011.
About the Station
Location: Wisconsin, United States, 46.01 latitude, -92.37 longitude.
Elevation: 290 m (950 ft).
Period of record: 1919 to 2011, 93 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 Danbury. 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 Danbury, with 2026 drawn through them
Month
Highest record high
Lowest record low
2026 highest maximum
2026 lowest minimum
Jan
12.2 C (54.0 F)
-47.8 C (-54.0 F)
n/a
n/a
Feb
16.7 C (62.1 F)
-42.8 C (-45.0 F)
n/a
n/a
Mar
27.2 C (81.0 F)
-39.4 C (-38.9 F)
n/a
n/a
Apr
33.3 C (91.9 F)
-22.8 C (-9.0 F)
n/a
n/a
May
41.1 C (106.0 F)
-10.0 C (14.0 F)
n/a
n/a
Jun
38.9 C (102.0 F)
-3.3 C (26.1 F)
n/a
n/a
Jul
42.2 C (108.0 F)
-0.6 C (30.9 F)
n/a
n/a
Aug
41.7 C (107.1 F)
-1.1 C (30.0 F)
n/a
n/a
Sep
38.3 C (100.9 F)
-7.8 C (18.0 F)
n/a
n/a
Oct
31.1 C (88.0 F)
-15.6 C (3.9 F)
n/a
n/a
Nov
27.2 C (81.0 F)
-31.7 C (-25.1 F)
n/a
n/a
Dec
14.4 C (57.9 F)
-42.2 C (-44.0 F)
n/a
n/a
Which Years Hold Standing Records
1,464 standing records
Year with most
1,464 records at Danbury still stand. 1936 holds the most, with 40.
Standing records at Danbury by the year they were set
Year set
Standing records
1919
3
1920
10
1921
23
1922
15
1923
23
1924
22
1925
30
1926
16
1927
14
1928
17
1929
24
1930
27
1931
37
1932
22
1933
30
1934
29
1935
22
1936
40
1937
9
1938
9
1939
20
1940
20
1941
14
1942
12
1943
13
1944
14
1945
14
1946
14
1947
28
1948
19
1949
10
1950
17
1951
23
1952
25
1953
21
1954
15
1955
14
1956
30
1957
9
1958
23
1959
14
1960
7
1961
8
1962
19
1963
14
1964
14
1965
15
1966
16
1967
13
1968
17
1969
12
1970
12
1971
11
1972
21
1973
9
1974
13
1975
6
1976
19
1977
19
1978
7
1979
11
1980
6
1981
15
1982
6
1983
16
1984
10
1985
10
1986
9
1987
17
1988
11
1989
21
1990
13
1991
21
1992
18
1993
8
1994
15
1995
10
1996
17
1997
9
1998
16
1999
12
2000
25
2001
17
2002
10
2003
11
2004
11
2005
16
2006
15
2007
8
2008
9
2009
13
2010
13
2011
2
All-Time Record Progression
4 new records
4 all-time records were set at Danbury between 3 August 1953 and 19 January 1994. Each dot is a new record.
When Danbury set new all-time records
Date
Kind
Detail
1953-08-03
Record daily precipitation
Record daily precipitation 131.6 mm (5.2 in)
1957-11-19
Record daily snowfall
Record daily snowfall 35.6 cm (14.0 in)
1991-11-01
Record daily snowfall
Record daily snowfall 43.2 cm (17.0 in)
1994-01-19
Record low maximum temperature
Record low maximum temperature -27.8 C (-18.0 F)
Wettest Day of Each Month
Aug: 131.6 mm (5.2 in)
The wettest day on record for each calendar month at Danbury. The most was 131.6 mm (5.2 in) on 3 August 1953.
Record daily precipitation for each month at Danbury
Month
Record daily precipitation (mm)
Date
Jan
30.5 mm (1.2 in)
11 January 1975
Feb
26.4 mm (1.0 in)
27 February 1998
Mar
44.7 mm (1.8 in)
26 March 1948
Apr
78.0 mm (3.1 in)
26 April 1954
May
105.4 mm (4.1 in)
11 May 1982
Jun
115.6 mm (4.6 in)
26 June 1985
Jul
121.4 mm (4.8 in)
9 July 2000
Aug
131.6 mm (5.2 in)
3 August 1953
Sep
98.3 mm (3.9 in)
2 September 2002
Oct
123.4 mm (4.9 in)
5 October 2005
Nov
48.3 mm (1.9 in)
1 November 1991
Dec
46.7 mm (1.8 in)
13 December 1968
Period of Record Coverage
1919 to 2011
Complete yearUnder 90 percent of days
93 years of record at Danbury, 1919 to 2011. 13 years have data for under 90 percent of days and are left out of rankings: 1919, 1920, 1921, 1923, 1935, 1941, 1942, 1945 and others.
Cooler than the station meanWarmer than the station mean
One stripe for each of 77 complete years at Danbury, 1924 to 2009. Blue stripes are years cooler than the station's own mean of 5.3 C (41.5 F); red stripes are warmer. The coolest year was 1924, at 3.4 C (38.1 F), and the warmest was 1931, at 8.3 C (47.0 F). The strongest colour marks a difference of 3.1 C (5.6 F).
Annual mean temperature at Danbury as warming stripes, 1924 to 2009
Year
Annual mean temperature
Difference from the station mean
1924
3.4 C
-1.88 C
1925
5.2 C
-0.05 C
1926
4.4 C
-0.84 C
1927
4.6 C
-0.64 C
1928
5.4 C
+0.07 C
1929
3.9 C
-1.39 C
1930
6.2 C
+0.90 C
1931
8.3 C
+3.04 C
1932
5.2 C
-0.06 C
1933
5.7 C
+0.42 C
1934
5.3 C
+0.05 C
1936
3.7 C
-1.54 C
1937
3.9 C
-1.38 C
1938
5.2 C
-0.04 C
1939
5.6 C
+0.33 C
1940
4.8 C
-0.52 C
1943
4.6 C
-0.69 C
1944
6.5 C
+1.22 C
1945
4.4 C
-0.87 C
1946
6.1 C
+0.81 C
1947
6.1 C
+0.82 C
1948
5.7 C
+0.41 C
1949
6.3 C
+1.00 C
1951
3.7 C
-1.54 C
1952
5.3 C
-0.03 C
1953
5.4 C
+0.16 C
1954
4.9 C
-0.39 C
1955
4.6 C
-0.66 C
1956
4.4 C
-0.87 C
1958
4.7 C
-0.54 C
1959
5.6 C
+0.34 C
1960
5.4 C
+0.08 C
1961
6.0 C
+0.70 C
1962
5.3 C
+0.06 C
1963
5.7 C
+0.41 C
1964
5.9 C
+0.60 C
1965
4.3 C
-0.99 C
1966
4.5 C
-0.81 C
1967
4.3 C
-0.98 C
1968
5.4 C
+0.10 C
1969
5.0 C
-0.30 C
1970
4.7 C
-0.54 C
1971
4.8 C
-0.51 C
1972
3.5 C
-1.80 C
1973
6.0 C
+0.76 C
1974
5.1 C
-0.16 C
1975
5.0 C
-0.28 C
1976
4.7 C
-0.54 C
1977
5.6 C
+0.32 C
1978
4.6 C
-0.65 C
1979
4.1 C
-1.22 C
1981
6.2 C
+0.88 C
1982
4.7 C
-0.57 C
1983
5.9 C
+0.57 C
1984
6.1 C
+0.81 C
1985
4.7 C
-0.59 C
1986
6.1 C
+0.77 C
1987
7.1 C
+1.85 C
1988
5.3 C
+0.03 C
1989
4.1 C
-1.17 C
1990
6.2 C
+0.90 C
1991
5.8 C
+0.54 C
1992
5.8 C
+0.48 C
1993
4.7 C
-0.59 C
1994
5.4 C
+0.13 C
1995
5.1 C
-0.20 C
1996
3.8 C
-1.46 C
1997
5.6 C
+0.29 C
1998
8.0 C
+2.72 C
2000
5.8 C
+0.54 C
2001
6.7 C
+1.41 C
2004
5.5 C
+0.17 C
2005
6.5 C
+1.25 C
2006
7.2 C
+1.91 C
2007
6.3 C
+0.99 C
2008
4.3 C
-0.98 C
2009
4.8 C
-0.47 C
The fitted trend in annual mean temperature here over 1924 to 2009 is 0.08 C (0.00 to 0.17) per decade. The interval includes zero, so the trend is not clearly different from zero. In Fahrenheit: 0.15 F (-0.01 to 0.30) per decade. The slope is a straight line fitted to 77 complete years; the brackets give its 95 percent interval.
Fitted temperature trends per decade at Danbury
Measure
Per decade (C)
Per decade (F)
Period
Complete years
Reading
Annual mean temperature
0.08 C (0.00 to 0.17) per decade
0.15 F (-0.01 to 0.30) per decade
1924 to 2009
77
Not clearly different from zero
Mean daily maximum
-0.2 C (-0.3 to -0.1) per decade
-0.3 F (-0.5 to -0.1) per decade
1924 to 2009
77
Fall
Mean daily minimum
0.3 C (0.2 to 0.4) per decade
0.6 F (0.4 to 0.8) per decade
1924 to 2009
77
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
1919 to 2011
Yearly extremes at Danbury: the record and the median year
Measure
Record
Year of the record
Median year
Years with a value
Hottest day (TXx)
42.2 C (108.0 F)
1936
34.4 C (93.9 F)
93
Coldest night (TNn)
-47.8 C (-54.0 F)
1922
-36.7 C (-34.1 F)
93
Wettest day (Rx1day)
131.6 mm (5.2 in)
1953
57.2 mm (2.3 in)
93
Wettest five days (Rx5day)
198.6 mm (7.8 in)
1953
85.9 mm (3.4 in)
93
Longest dry spell (CDD)
41 days
1992
23 days
93
Hottest day (TXx)
The hottest day of the year at Danbury, 1919 to 2011. The record is 42.2 C (108.0 F) in 1936, marked on the chart; the median year is 34.4 C (93.9 F).
Hottest day (TXx) at Danbury by year
Year
Hottest day (TXx)
1919
30.0 C (86.0 F)
1920
32.8 C (91.0 F)
1921
38.9 C (102.0 F)
1922
36.7 C (98.1 F)
1923
36.1 C (97.0 F)
1924
32.8 C (91.0 F)
1925
37.2 C (99.0 F)
1926
33.9 C (93.0 F)
1927
34.4 C (93.9 F)
1928
33.3 C (91.9 F)
1929
36.7 C (98.1 F)
1930
37.8 C (100.0 F)
1931
40.0 C (104.0 F)
1932
37.2 C (99.0 F)
1933
37.2 C (99.0 F)
1934
41.1 C (106.0 F)
1935
35.6 C (96.1 F)
1936
42.2 C (108.0 F)
1937
35.6 C (96.1 F)
1938
34.4 C (93.9 F)
1939
37.8 C (100.0 F)
1940
37.2 C (99.0 F)
1941
35.6 C (96.1 F)
1942
35.6 C (96.1 F)
1943
37.2 C (99.0 F)
1944
34.4 C (93.9 F)
1945
35.0 C (95.0 F)
1946
33.3 C (91.9 F)
1947
41.7 C (107.1 F)
1948
36.7 C (98.1 F)
1949
37.8 C (100.0 F)
1950
36.7 C (98.1 F)
1951
33.3 C (91.9 F)
1952
32.8 C (91.0 F)
1953
33.3 C (91.9 F)
1954
32.8 C (91.0 F)
1955
36.7 C (98.1 F)
1956
35.6 C (96.1 F)
1957
33.9 C (93.0 F)
1958
33.9 C (93.0 F)
1959
35.0 C (95.0 F)
1960
33.9 C (93.0 F)
1961
35.0 C (95.0 F)
1962
32.2 C (90.0 F)
1963
35.6 C (96.1 F)
1964
36.7 C (98.1 F)
1965
33.9 C (93.0 F)
1966
33.9 C (93.0 F)
1967
31.7 C (89.1 F)
1968
34.4 C (93.9 F)
1969
33.9 C (93.0 F)
1970
33.3 C (91.9 F)
1971
33.3 C (91.9 F)
1972
31.7 C (89.1 F)
1973
31.7 C (89.1 F)
1974
36.1 C (97.0 F)
1975
35.0 C (95.0 F)
1976
35.6 C (96.1 F)
1977
33.9 C (93.0 F)
1978
34.4 C (93.9 F)
1979
31.7 C (89.1 F)
1980
37.2 C (99.0 F)
1981
32.2 C (90.0 F)
1982
35.0 C (95.0 F)
1983
33.3 C (91.9 F)
1984
33.3 C (91.9 F)
1985
32.8 C (91.0 F)
1986
34.4 C (93.9 F)
1987
35.0 C (95.0 F)
1988
38.3 C (100.9 F)
1989
34.4 C (93.9 F)
1990
37.8 C (100.0 F)
1991
36.7 C (98.1 F)
1992
32.2 C (90.0 F)
1993
31.7 C (89.1 F)
1994
33.9 C (93.0 F)
1995
34.4 C (93.9 F)
1996
32.8 C (91.0 F)
1997
34.4 C (93.9 F)
1998
33.9 C (93.0 F)
1999
35.6 C (96.1 F)
2000
32.2 C (90.0 F)
2001
35.6 C (96.1 F)
2002
33.9 C (93.0 F)
2003
32.8 C (91.0 F)
2004
33.3 C (91.9 F)
2005
35.6 C (96.1 F)
2006
37.8 C (100.0 F)
2007
33.9 C (93.0 F)
2008
32.2 C (90.0 F)
2009
33.9 C (93.0 F)
2010
33.3 C (91.9 F)
2011
12.8 C (55.0 F)
Coldest night (TNn)
The coldest night of the year at Danbury, 1919 to 2011. The record is -47.8 C (-54.0 F) in 1922, marked on the chart; the median year is -36.7 C (-34.1 F).
Coldest night (TNn) at Danbury by year
Year
Coldest night (TNn)
1919
-17.2 C (1.0 F)
1920
-26.1 C (-15.0 F)
1921
-34.4 C (-29.9 F)
1922
-47.8 C (-54.0 F)
1923
-31.1 C (-24.0 F)
1924
-38.3 C (-36.9 F)
1925
-38.3 C (-36.9 F)
1926
-35.6 C (-32.1 F)
1927
-42.8 C (-45.0 F)
1928
-39.4 C (-38.9 F)
1929
-41.1 C (-42.0 F)
1930
-36.7 C (-34.1 F)
1931
-26.7 C (-16.1 F)
1932
-36.7 C (-34.1 F)
1933
-38.3 C (-36.9 F)
1934
-33.9 C (-29.0 F)
1935
-42.8 C (-45.0 F)
1936
-42.8 C (-45.0 F)
1937
-38.3 C (-36.9 F)
1938
-38.9 C (-38.0 F)
1939
-41.7 C (-43.1 F)
1940
-33.9 C (-29.0 F)
1941
-31.7 C (-25.1 F)
1942
-35.0 C (-31.0 F)
1943
-36.7 C (-34.1 F)
1944
-31.1 C (-24.0 F)
1945
-37.8 C (-36.0 F)
1946
-41.1 C (-42.0 F)
1947
-31.1 C (-24.0 F)
1948
-42.2 C (-44.0 F)
1949
-36.7 C (-34.1 F)
1950
-43.3 C (-45.9 F)
1951
-42.8 C (-45.0 F)
1952
-40.0 C (-40.0 F)
1953
-37.8 C (-36.0 F)
1954
-41.1 C (-42.0 F)
1955
-42.2 C (-44.0 F)
1956
-35.0 C (-31.0 F)
1957
-35.0 C (-31.0 F)
1958
-38.3 C (-36.9 F)
1959
-35.6 C (-32.1 F)
1960
-31.1 C (-24.0 F)
1961
-32.2 C (-26.0 F)
1962
-39.4 C (-38.9 F)
1963
-38.3 C (-36.9 F)
1964
-31.7 C (-25.1 F)
1965
-41.1 C (-42.0 F)
1966
-36.7 C (-34.1 F)
1967
-41.1 C (-42.0 F)
1968
-39.4 C (-38.9 F)
1969
-35.0 C (-31.0 F)
1970
-38.3 C (-36.9 F)
1971
-36.1 C (-33.0 F)
1972
-40.0 C (-40.0 F)
1973
-38.3 C (-36.9 F)
1974
-37.8 C (-36.0 F)
1975
-33.3 C (-27.9 F)
1976
-36.7 C (-34.1 F)
1977
-42.2 C (-44.0 F)
1978
-34.4 C (-29.9 F)
1979
-40.0 C (-40.0 F)
1980
-31.7 C (-25.1 F)
1981
-33.9 C (-29.0 F)
1982
-42.2 C (-44.0 F)
1983
-41.1 C (-42.0 F)
1984
-37.2 C (-35.0 F)
1985
-37.2 C (-35.0 F)
1986
-32.8 C (-27.0 F)
1987
-33.3 C (-27.9 F)
1988
-36.7 C (-34.1 F)
1989
-36.1 C (-33.0 F)
1990
-35.6 C (-32.1 F)
1991
-32.8 C (-27.0 F)
1992
-31.1 C (-24.0 F)
1993
-32.8 C (-27.0 F)
1994
-38.9 C (-38.0 F)
1995
-31.1 C (-24.0 F)
1996
-41.7 C (-43.1 F)
1997
-34.4 C (-29.9 F)
1998
-31.1 C (-24.0 F)
1999
-31.1 C (-24.0 F)
2000
-33.9 C (-29.0 F)
2001
-30.0 C (-22.0 F)
2002
-26.7 C (-16.1 F)
2003
-28.9 C (-20.0 F)
2004
-35.0 C (-31.0 F)
2005
-38.9 C (-38.0 F)
2006
-29.4 C (-20.9 F)
2007
-35.6 C (-32.1 F)
2008
-31.7 C (-25.1 F)
2009
-37.2 C (-35.0 F)
2010
-33.3 C (-27.9 F)
2011
-26.1 C (-15.0 F)
Wettest day (Rx1day)
The wettest day of the year at Danbury, 1919 to 2011. The record is 131.6 mm (5.2 in) in 1953, marked on the chart; the median year is 57.2 mm (2.3 in).
Wettest day (Rx1day) at Danbury by year
Year
Wettest day (Rx1day)
1919
40.6 mm (1.6 in)
1920
50.8 mm (2.0 in)
1921
35.6 mm (1.4 in)
1922
35.6 mm (1.4 in)
1923
67.3 mm (2.6 in)
1924
40.6 mm (1.6 in)
1925
71.1 mm (2.8 in)
1926
39.4 mm (1.6 in)
1927
48.3 mm (1.9 in)
1928
66.0 mm (2.6 in)
1929
55.9 mm (2.2 in)
1930
42.7 mm (1.7 in)
1931
62.2 mm (2.4 in)
1932
48.3 mm (1.9 in)
1933
55.9 mm (2.2 in)
1934
68.8 mm (2.7 in)
1935
61.5 mm (2.4 in)
1936
64.8 mm (2.6 in)
1937
57.2 mm (2.3 in)
1938
66.0 mm (2.6 in)
1939
41.9 mm (1.6 in)
1940
63.5 mm (2.5 in)
1941
76.2 mm (3.0 in)
1942
67.3 mm (2.6 in)
1943
59.7 mm (2.4 in)
1944
61.0 mm (2.4 in)
1945
66.3 mm (2.6 in)
1946
108.0 mm (4.3 in)
1947
35.6 mm (1.4 in)
1948
57.2 mm (2.3 in)
1949
55.9 mm (2.2 in)
1950
57.2 mm (2.3 in)
1951
57.7 mm (2.3 in)
1952
66.0 mm (2.6 in)
1953
131.6 mm (5.2 in)
1954
78.0 mm (3.1 in)
1955
71.9 mm (2.8 in)
1956
96.5 mm (3.8 in)
1957
67.3 mm (2.6 in)
1958
45.7 mm (1.8 in)
1959
68.6 mm (2.7 in)
1960
52.6 mm (2.1 in)
1961
39.9 mm (1.6 in)
1962
50.8 mm (2.0 in)
1963
66.3 mm (2.6 in)
1964
55.1 mm (2.2 in)
1965
37.8 mm (1.5 in)
1966
44.2 mm (1.7 in)
1967
41.1 mm (1.6 in)
1968
82.0 mm (3.2 in)
1969
37.1 mm (1.5 in)
1970
59.4 mm (2.3 in)
1971
39.6 mm (1.6 in)
1972
100.3 mm (3.9 in)
1973
68.1 mm (2.7 in)
1974
48.0 mm (1.9 in)
1975
38.4 mm (1.5 in)
1976
49.5 mm (1.9 in)
1977
66.8 mm (2.6 in)
1978
82.0 mm (3.2 in)
1979
41.9 mm (1.6 in)
1980
38.1 mm (1.5 in)
1981
69.9 mm (2.8 in)
1982
105.4 mm (4.1 in)
1983
79.5 mm (3.1 in)
1984
61.2 mm (2.4 in)
1985
115.6 mm (4.6 in)
1986
49.8 mm (2.0 in)
1987
35.8 mm (1.4 in)
1988
36.1 mm (1.4 in)
1989
55.9 mm (2.2 in)
1990
54.9 mm (2.2 in)
1991
48.3 mm (1.9 in)
1992
66.8 mm (2.6 in)
1993
30.5 mm (1.2 in)
1994
90.2 mm (3.6 in)
1995
64.3 mm (2.5 in)
1996
94.5 mm (3.7 in)
1997
74.2 mm (2.9 in)
1998
48.3 mm (1.9 in)
1999
48.8 mm (1.9 in)
2000
121.4 mm (4.8 in)
2001
59.4 mm (2.3 in)
2002
99.8 mm (3.9 in)
2003
37.6 mm (1.5 in)
2004
37.6 mm (1.5 in)
2005
123.4 mm (4.9 in)
2006
46.7 mm (1.8 in)
2007
41.7 mm (1.6 in)
2008
41.4 mm (1.6 in)
2009
50.0 mm (2.0 in)
2010
91.7 mm (3.6 in)
2011
23.4 mm (0.9 in)
Wettest five days (Rx5day)
The wettest five days of the year at Danbury, 1919 to 2011. The record is 198.6 mm (7.8 in) in 1953, marked on the chart; the median year is 85.9 mm (3.4 in).
Wettest five days (Rx5day) at Danbury by year
Year
Wettest five days (Rx5day)
1919
55.7 mm (2.2 in)
1920
50.8 mm (2.0 in)
1921
59.5 mm (2.3 in)
1922
80.0 mm (3.1 in)
1923
103.9 mm (4.1 in)
1924
68.5 mm (2.7 in)
1925
92.7 mm (3.6 in)
1926
78.0 mm (3.1 in)
1927
88.9 mm (3.5 in)
1928
91.4 mm (3.6 in)
1929
75.1 mm (3.0 in)
1930
79.5 mm (3.1 in)
1931
119.4 mm (4.7 in)
1932
62.3 mm (2.5 in)
1933
105.5 mm (4.2 in)
1934
117.6 mm (4.6 in)
1935
114.8 mm (4.5 in)
1936
86.9 mm (3.4 in)
1937
81.6 mm (3.2 in)
1938
116.1 mm (4.6 in)
1939
63.5 mm (2.5 in)
1940
78.5 mm (3.1 in)
1941
121.9 mm (4.8 in)
1942
84.5 mm (3.3 in)
1943
105.2 mm (4.1 in)
1944
86.1 mm (3.4 in)
1945
94.4 mm (3.7 in)
1946
82.6 mm (3.3 in)
1947
59.0 mm (2.3 in)
1948
58.0 mm (2.3 in)
1949
131.5 mm (5.2 in)
1950
74.5 mm (2.9 in)
1951
113.3 mm (4.5 in)
1952
137.6 mm (5.4 in)
1953
198.6 mm (7.8 in)
1954
124.0 mm (4.9 in)
1955
104.2 mm (4.1 in)
1956
102.6 mm (4.0 in)
1957
81.9 mm (3.2 in)
1958
88.7 mm (3.5 in)
1959
89.9 mm (3.5 in)
1960
77.5 mm (3.1 in)
1961
93.8 mm (3.7 in)
1962
85.9 mm (3.4 in)
1963
82.0 mm (3.2 in)
1964
80.8 mm (3.2 in)
1965
75.1 mm (3.0 in)
1966
54.1 mm (2.1 in)
1967
90.2 mm (3.6 in)
1968
87.6 mm (3.4 in)
1969
65.0 mm (2.6 in)
1970
108.8 mm (4.3 in)
1971
78.8 mm (3.1 in)
1972
164.1 mm (6.5 in)
1973
79.6 mm (3.1 in)
1974
84.6 mm (3.3 in)
1975
72.7 mm (2.9 in)
1976
51.5 mm (2.0 in)
1977
102.4 mm (4.0 in)
1978
133.8 mm (5.3 in)
1979
64.0 mm (2.5 in)
1980
61.7 mm (2.4 in)
1981
92.0 mm (3.6 in)
1982
134.8 mm (5.3 in)
1983
98.7 mm (3.9 in)
1984
110.0 mm (4.3 in)
1985
125.7 mm (4.9 in)
1986
118.5 mm (4.7 in)
1987
61.7 mm (2.4 in)
1988
80.1 mm (3.2 in)
1989
75.2 mm (3.0 in)
1990
58.0 mm (2.3 in)
1991
85.9 mm (3.4 in)
1992
80.6 mm (3.2 in)
1993
48.8 mm (1.9 in)
1994
133.4 mm (5.3 in)
1995
97.8 mm (3.9 in)
1996
113.8 mm (4.5 in)
1997
80.0 mm (3.1 in)
1998
64.8 mm (2.6 in)
1999
74.0 mm (2.9 in)
2000
155.7 mm (6.1 in)
2001
111.9 mm (4.4 in)
2002
175.5 mm (6.9 in)
2003
61.2 mm (2.4 in)
2004
67.1 mm (2.6 in)
2005
132.8 mm (5.2 in)
2006
75.0 mm (3.0 in)
2007
88.7 mm (3.5 in)
2008
60.2 mm (2.4 in)
2009
70.3 mm (2.8 in)
2010
114.3 mm (4.5 in)
2011
27.6 mm (1.1 in)
Longest dry spell (CDD)
The longest dry spell of the year at Danbury, 1919 to 2011. The record is 41 days in 1992, marked on the chart; the median year is 23 days.
Longest dry spell (CDD) at Danbury by year
Year
Longest dry spell (CDD)
1919
13 days
1920
25 days
1921
34 days
1922
27 days
1923
28 days
1924
23 days
1925
32 days
1926
17 days
1927
18 days
1928
29 days
1929
22 days
1930
25 days
1931
21 days
1932
22 days
1933
32 days
1934
23 days
1935
18 days
1936
26 days
1937
28 days
1938
23 days
1939
34 days
1940
19 days
1941
17 days
1942
25 days
1943
27 days
1944
28 days
1945
15 days
1946
20 days
1947
24 days
1948
19 days
1949
25 days
1950
19 days
1951
17 days
1952
32 days
1953
23 days
1954
21 days
1955
16 days
1956
27 days
1957
21 days
1958
16 days
1959
19 days
1960
24 days
1961
27 days
1962
20 days
1963
21 days
1964
20 days
1965
18 days
1966
24 days
1967
25 days
1968
24 days
1969
32 days
1970
17 days
1971
14 days
1972
15 days
1973
17 days
1974
22 days
1975
17 days
1976
35 days
1977
13 days
1978
19 days
1979
17 days
1980
31 days
1981
31 days
1982
19 days
1983
15 days
1984
22 days
1985
18 days
1986
20 days
1987
23 days
1988
29 days
1989
18 days
1990
36 days
1991
16 days
1992
41 days
1993
24 days
1994
22 days
1995
23 days
1996
24 days
1997
24 days
1998
19 days
1999
25 days
2000
20 days
2001
18 days
2002
37 days
2003
28 days
2004
19 days
2005
22 days
2006
26 days
2007
28 days
2008
28 days
2009
24 days
2010
28 days
2011
10 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
77 years with a frost
Across 77 years with a frost, the median last spring frost at Danbury falls on 26 May and the median first autumn frost on 20 September, which leaves a median of 116 days between them.
In 1976 to 2009 the median growing season was 124 days. That is 23 days more than in 1924 to 1958.
Fitted over all years, the growing season changes by +4.8 days per decade at this station.
Frost dates and growing season at Danbury
Measure
Median, all years
Earliest period (1924 to 1958)
Recent period (1976 to 2009)
Recent against earliest
Fitted trend
Last spring frost
26 May
2 June
21 May
12 days earlier
-2.3 days per decade
First autumn frost
20 September
12 September
23 September
11 days later
+2.5 days per decade
Growing days
116 days
101 days
124 days
23 days more
+4.8 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
79 years, 1922 to 2010
A day with at least 56.4 mm (2.2 in) of rain is expected about once in 2 years. A day with at least 144.0 mm (5.7 in) of rain is expected about once in 100 years.
Rainfall return levels at Danbury: the daily rain expected about once in a given number of years
Expected about once in
A day with at least
Note
2 years
56.4 mm (2.2 in)
5 years
76.0 mm (3.0 in)
10 years
90.4 mm (3.6 in)
25 years
110.3 mm (4.3 in)
50 years
126.6 mm (5.0 in)
100 years
144.0 mm (5.7 in)
Longer than the 79 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, 79 years of values from 1922 to 2010.
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: 131.6 mm (5.2 in) in 1953; 123.4 mm (4.9 in) in 2005; 121.4 mm (4.8 in) in 2000.
Station Changes
2 suspected
2 changes were suspected in the annual mean temperature of Danbury, at 1978 and 1987. Each is measured against neighbouring stations.
Relative to 5 neighbouring stations, the station's annual mean temperature from 1978 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 1987 ran 0.4 C (0.8 F) lower than in the years before (possible change).
Suspected changes in the annual mean temperature at Danbury, against neighbouring stations
Year
Shift (C)
Shift (F)
Strength
Neighbours
1978
+0.3
+0.5
likely
5
1987
-0.4
-0.8
possible
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 Danbury standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Danbury 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 2026-10-13 (13 October 2026). Records are computed by this site and are not official.