Record envelope, standing records and threshold days for Hamilton 2W (USC00233568), Missouri, United States, with 68 years of record.
Key Facts for Hamilton 2W
Hamilton 2W (USC00233568) is a weather station in Missouri, United States at 39.74 latitude and -94.03 longitude, 274 m (900 ft) above sea level.
The station reports from 1954 to 2021, 68 years of record.
1,464 records set at Hamilton 2W still stand.
Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
Hamilton 2W set a daily record high maximum temperature of 35.6 C (96.1 F) on 19 June 2021.
About the Station
Location: Missouri, United States, 39.74 latitude, -94.03 longitude.
Elevation: 274 m (900 ft).
Period of record: 1954 to 2021, 68 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 Hamilton 2W. 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 Hamilton 2W, with 2026 drawn through them
Month
Highest record high
Lowest record low
2026 highest maximum
2026 lowest minimum
Jan
22.2 C (72.0 F)
-32.8 C (-27.0 F)
n/a
n/a
Feb
25.6 C (78.1 F)
-32.8 C (-27.0 F)
n/a
n/a
Mar
30.0 C (86.0 F)
-27.2 C (-17.0 F)
n/a
n/a
Apr
33.3 C (91.9 F)
-13.9 C (7.0 F)
n/a
n/a
May
36.1 C (97.0 F)
-3.9 C (25.0 F)
n/a
n/a
Jun
38.9 C (102.0 F)
1.1 C (34.0 F)
n/a
n/a
Jul
42.8 C (109.0 F)
6.1 C (43.0 F)
n/a
n/a
Aug
42.2 C (108.0 F)
4.4 C (39.9 F)
n/a
n/a
Sep
37.8 C (100.0 F)
-2.8 C (27.0 F)
n/a
n/a
Oct
35.6 C (96.1 F)
-10.0 C (14.0 F)
n/a
n/a
Nov
27.8 C (82.0 F)
-23.3 C (-9.9 F)
n/a
n/a
Dec
22.2 C (72.0 F)
-32.8 C (-27.0 F)
n/a
n/a
Which Years Hold Standing Records
1,464 standing records
Year with most
1,464 records at Hamilton 2W still stand. 2012 holds the most, with 45.
Standing records at Hamilton 2W by the year they were set
Year set
Standing records
1954
26
1955
27
1956
39
1957
14
1958
22
1959
13
1960
25
1961
8
1962
28
1963
33
1964
16
1965
32
1966
21
1967
32
1968
13
1969
7
1970
11
1971
19
1972
28
1973
5
1974
31
1975
24
1976
27
1977
18
1978
24
1979
29
1980
28
1981
23
1982
21
1983
28
1984
24
1985
23
1986
21
1987
19
1988
28
1989
30
1990
28
1991
37
1992
23
1993
13
1994
22
1995
24
1996
18
1997
21
1998
30
1999
18
2000
25
2001
17
2002
23
2003
17
2004
19
2005
11
2006
14
2007
21
2008
11
2009
19
2010
9
2011
13
2012
45
2013
25
2014
25
2015
12
2016
16
2017
22
2018
26
2019
16
2020
14
2021
13
All-Time Record Progression
4 new records
4 all-time records were set at Hamilton 2W between 14 September 1993 and 2 February 2011. Each dot is a new record.
When Hamilton 2W set new all-time records
Date
Kind
Detail
1993-09-14
Record daily precipitation
Record daily precipitation 125.0 mm (4.9 in)
2007-05-07
Record daily precipitation
Record daily precipitation 160.5 mm (6.3 in)
2011-02-02
Record daily snowfall
Record daily snowfall 30.5 cm (12.0 in)
2011-02-02
Record snow depth
Record snow depth 33.0 cm (13.0 in)
Wettest Day of Each Month
May: 160.5 mm (6.3 in)
The wettest day on record for each calendar month at Hamilton 2W. The most was 160.5 mm (6.3 in) on 7 May 2007.
Record daily precipitation for each month at Hamilton 2W
Month
Record daily precipitation (mm)
Date
Jan
50.8 mm (2.0 in)
30 January 1982
Feb
70.4 mm (2.8 in)
21 February 1997
Mar
69.9 mm (2.8 in)
19 March 1982
Apr
77.0 mm (3.0 in)
11 April 1997
May
160.5 mm (6.3 in)
7 May 2007
Jun
106.7 mm (4.2 in)
27 June 2011
Jul
101.6 mm (4.0 in)
22 July 1957
Aug
91.4 mm (3.6 in)
8 August 2020
Sep
125.0 mm (4.9 in)
14 September 1993
Oct
113.5 mm (4.5 in)
5 October 1998
Nov
76.2 mm (3.0 in)
17 November 1958
Dec
53.3 mm (2.1 in)
14 December 1992
Period of Record Coverage
1954 to 2021
Complete yearUnder 90 percent of days
68 years of record at Hamilton 2W, 1954 to 2021. 6 years have data for under 90 percent of days and are left out of rankings: 1954, 1969, 1970, 2015, 2019, 2021.
Cooler than the station meanWarmer than the station mean
One stripe for each of 56 complete years at Hamilton 2W, 1955 to 2018. Blue stripes are years cooler than the station's own mean of 11.0 C (51.8 F); red stripes are warmer. The coolest year was 1993, at 9.4 C (48.9 F), and the warmest was 1956, at 12.9 C (55.2 F). The strongest colour marks a difference of 1.9 C (3.4 F).
Annual mean temperature at Hamilton 2W as warming stripes, 1955 to 2018
Year
Annual mean temperature
Difference from the station mean
1955
12.0 C
+0.96 C
1956
12.9 C
+1.87 C
1957
11.9 C
+0.86 C
1958
11.3 C
+0.26 C
1959
11.8 C
+0.74 C
1960
11.1 C
+0.11 C
1961
11.2 C
+0.17 C
1962
11.3 C
+0.29 C
1963
11.9 C
+0.90 C
1964
12.2 C
+1.17 C
1965
12.0 C
+1.01 C
1966
11.7 C
+0.72 C
1967
11.7 C
+0.70 C
1968
11.8 C
+0.78 C
1971
10.7 C
-0.27 C
1972
10.1 C
-0.87 C
1973
11.4 C
+0.36 C
1974
10.7 C
-0.28 C
1975
11.1 C
+0.11 C
1976
10.7 C
-0.33 C
1977
11.0 C
+0.00 C
1978
9.5 C
-1.51 C
1981
11.1 C
+0.12 C
1982
9.7 C
-1.34 C
1983
10.4 C
-0.64 C
1984
10.8 C
-0.24 C
1985
9.6 C
-1.44 C
1986
11.3 C
+0.32 C
1987
11.4 C
+0.38 C
1988
10.6 C
-0.45 C
1990
11.7 C
+0.64 C
1991
11.3 C
+0.30 C
1992
10.5 C
-0.49 C
1993
9.4 C
-1.64 C
1994
9.9 C
-1.16 C
1995
9.8 C
-1.23 C
1996
9.6 C
-1.43 C
1997
10.1 C
-0.92 C
1998
12.0 C
+1.03 C
1999
11.4 C
+0.34 C
2000
10.8 C
-0.18 C
2001
11.1 C
+0.13 C
2002
11.0 C
-0.05 C
2003
10.7 C
-0.33 C
2004
10.7 C
-0.36 C
2005
11.2 C
+0.17 C
2006
11.6 C
+0.58 C
2007
11.0 C
-0.03 C
2009
9.8 C
-1.19 C
2010
10.3 C
-0.72 C
2012
12.5 C
+1.51 C
2013
10.0 C
-1.06 C
2014
9.7 C
-1.34 C
2016
12.5 C
+1.49 C
2017
12.2 C
+1.19 C
2018
11.2 C
+0.23 C
The annual mean temperature here has fallen by 0.13 C (0.01 to 0.25) per decade over 1955 to 2018. In Fahrenheit: 0.23 F (0.01 to 0.45) per decade. The slope is a straight line fitted to 56 complete years; the brackets give its 95 percent interval.
Fitted temperature trends per decade at Hamilton 2W
Measure
Per decade (C)
Per decade (F)
Period
Complete years
Reading
Annual mean temperature
-0.13 C (-0.25 to -0.01) per decade
-0.23 F (-0.45 to -0.01) per decade
1955 to 2018
56
Fall
Mean daily maximum
-0.1 C (-0.2 to 0.1) per decade
-0.1 F (-0.4 to 0.1) per decade
1955 to 2018
56
Not clearly different from zero
Mean daily minimum
-0.19 C (-0.34 to -0.04) per decade
-0.3 F (-0.6 to -0.1) per decade
1955 to 2018
56
Fall
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
1954 to 2021
Yearly extremes at Hamilton 2W: the record and the median year
Measure
Record
Year of the record
Median year
Years with a value
Hottest day (TXx)
42.8 C (109.0 F)
1954
37.2 C (99.0 F)
68
Coldest night (TNn)
-32.8 C (-27.0 F)
1979
-25.6 C (-14.1 F)
68
Wettest day (Rx1day)
160.5 mm (6.3 in)
2007
71.1 mm (2.8 in)
68
Wettest five days (Rx5day)
278.6 mm (11.0 in)
2018
117.9 mm (4.6 in)
68
Longest dry spell (CDD)
50 days
1999
26 days
68
Hottest day (TXx)
The hottest day of the year at Hamilton 2W, 1954 to 2021. The record is 42.8 C (109.0 F) in 1954, marked on the chart; the median year is 37.2 C (99.0 F).
Hottest day (TXx) at Hamilton 2W by year
Year
Hottest day (TXx)
1954
42.8 C (109.0 F)
1955
38.9 C (102.0 F)
1956
38.9 C (102.0 F)
1957
38.9 C (102.0 F)
1958
36.1 C (97.0 F)
1959
36.1 C (97.0 F)
1960
36.1 C (97.0 F)
1961
35.0 C (95.0 F)
1962
38.9 C (102.0 F)
1963
36.7 C (98.1 F)
1964
38.9 C (102.0 F)
1965
34.4 C (93.9 F)
1966
38.9 C (102.0 F)
1967
37.2 C (99.0 F)
1968
37.2 C (99.0 F)
1969
36.7 C (98.1 F)
1970
38.9 C (102.0 F)
1971
36.7 C (98.1 F)
1972
36.1 C (97.0 F)
1973
36.1 C (97.0 F)
1974
40.6 C (105.1 F)
1975
37.8 C (100.0 F)
1976
39.4 C (102.9 F)
1977
37.8 C (100.0 F)
1978
36.1 C (97.0 F)
1979
35.0 C (95.0 F)
1980
41.7 C (107.1 F)
1981
35.6 C (96.1 F)
1982
36.1 C (97.0 F)
1983
40.0 C (104.0 F)
1984
42.2 C (108.0 F)
1985
35.6 C (96.1 F)
1986
35.0 C (95.0 F)
1987
38.9 C (102.0 F)
1988
40.6 C (105.1 F)
1989
36.7 C (98.1 F)
1990
37.8 C (100.0 F)
1991
39.4 C (102.9 F)
1992
36.7 C (98.1 F)
1993
37.2 C (99.0 F)
1994
36.1 C (97.0 F)
1995
38.9 C (102.0 F)
1996
37.2 C (99.0 F)
1997
37.8 C (100.0 F)
1998
36.7 C (98.1 F)
1999
37.8 C (100.0 F)
2000
37.8 C (100.0 F)
2001
36.7 C (98.1 F)
2002
38.3 C (100.9 F)
2003
40.0 C (104.0 F)
2004
35.6 C (96.1 F)
2005
38.3 C (100.9 F)
2006
38.9 C (102.0 F)
2007
39.4 C (102.9 F)
2008
35.6 C (96.1 F)
2009
35.0 C (95.0 F)
2010
36.7 C (98.1 F)
2011
37.2 C (99.0 F)
2012
40.6 C (105.1 F)
2013
38.3 C (100.9 F)
2014
35.0 C (95.0 F)
2015
34.4 C (93.9 F)
2016
37.2 C (99.0 F)
2017
36.1 C (97.0 F)
2018
37.8 C (100.0 F)
2019
35.0 C (95.0 F)
2020
33.9 C (93.0 F)
2021
35.6 C (96.1 F)
Coldest night (TNn)
The coldest night of the year at Hamilton 2W, 1954 to 2021. The record is -32.8 C (-27.0 F) in 1979, marked on the chart; the median year is -25.6 C (-14.1 F).
Coldest night (TNn) at Hamilton 2W by year
Year
Coldest night (TNn)
1954
-10.0 C (14.0 F)
1955
-22.8 C (-9.0 F)
1956
-20.6 C (-5.1 F)
1957
-20.0 C (-4.0 F)
1958
-24.4 C (-11.9 F)
1959
-26.1 C (-15.0 F)
1960
-23.3 C (-9.9 F)
1961
-25.0 C (-13.0 F)
1962
-25.6 C (-14.1 F)
1963
-26.1 C (-15.0 F)
1964
-21.1 C (-6.0 F)
1965
-25.6 C (-14.1 F)
1966
-25.6 C (-14.1 F)
1967
-21.1 C (-6.0 F)
1968
-28.3 C (-18.9 F)
1969
-16.7 C (1.9 F)
1970
-14.4 C (6.1 F)
1971
-25.6 C (-14.1 F)
1972
-27.8 C (-18.0 F)
1973
-24.4 C (-11.9 F)
1974
-32.2 C (-26.0 F)
1975
-21.1 C (-6.0 F)
1976
-27.2 C (-17.0 F)
1977
-28.9 C (-20.0 F)
1978
-26.1 C (-15.0 F)
1979
-32.8 C (-27.0 F)
1980
-26.7 C (-16.1 F)
1981
-29.4 C (-20.9 F)
1982
-32.8 C (-27.0 F)
1983
-30.6 C (-23.1 F)
1984
-23.9 C (-11.0 F)
1985
-27.8 C (-18.0 F)
1986
-21.1 C (-6.0 F)
1987
-20.0 C (-4.0 F)
1988
-30.0 C (-22.0 F)
1989
-32.8 C (-27.0 F)
1990
-23.3 C (-9.9 F)
1991
-28.3 C (-18.9 F)
1992
-17.2 C (1.0 F)
1993
-26.1 C (-15.0 F)
1994
-23.3 C (-9.9 F)
1995
-26.1 C (-15.0 F)
1996
-26.7 C (-16.1 F)
1997
-30.0 C (-22.0 F)
1998
-27.2 C (-17.0 F)
1999
-28.3 C (-18.9 F)
2000
-25.0 C (-13.0 F)
2001
-27.2 C (-17.0 F)
2002
-22.8 C (-9.0 F)
2003
-22.2 C (-8.0 F)
2004
-25.6 C (-14.1 F)
2005
-26.1 C (-15.0 F)
2006
-17.8 C (0.0 F)
2007
-20.6 C (-5.1 F)
2008
-25.0 C (-13.0 F)
2009
-21.7 C (-7.1 F)
2010
-27.8 C (-18.0 F)
2011
-29.4 C (-20.9 F)
2012
-16.7 C (1.9 F)
2013
-26.7 C (-16.1 F)
2014
-28.3 C (-18.9 F)
2015
-23.3 C (-9.9 F)
2016
-25.0 C (-13.0 F)
2017
-21.7 C (-7.1 F)
2018
-25.0 C (-13.0 F)
2019
-24.4 C (-11.9 F)
2020
-17.8 C (0.0 F)
2021
-27.2 C (-17.0 F)
Wettest day (Rx1day)
The wettest day of the year at Hamilton 2W, 1954 to 2021. The record is 160.5 mm (6.3 in) in 2007, marked on the chart; the median year is 71.1 mm (2.8 in).
Wettest day (Rx1day) at Hamilton 2W by year
Year
Wettest day (Rx1day)
1954
89.4 mm (3.5 in)
1955
66.5 mm (2.6 in)
1956
61.0 mm (2.4 in)
1957
101.6 mm (4.0 in)
1958
76.2 mm (3.0 in)
1959
102.6 mm (4.0 in)
1960
71.1 mm (2.8 in)
1961
96.5 mm (3.8 in)
1962
70.4 mm (2.8 in)
1963
57.7 mm (2.3 in)
1964
26.2 mm (1.0 in)
1965
124.5 mm (4.9 in)
1966
35.6 mm (1.4 in)
1967
61.0 mm (2.4 in)
1968
63.8 mm (2.5 in)
1969
109.0 mm (4.3 in)
1970
70.6 mm (2.8 in)
1971
76.2 mm (3.0 in)
1972
101.1 mm (4.0 in)
1973
99.8 mm (3.9 in)
1974
62.7 mm (2.5 in)
1975
48.8 mm (1.9 in)
1976
45.7 mm (1.8 in)
1977
88.6 mm (3.5 in)
1978
118.1 mm (4.6 in)
1979
78.7 mm (3.1 in)
1980
62.2 mm (2.4 in)
1981
58.9 mm (2.3 in)
1982
104.1 mm (4.1 in)
1983
76.2 mm (3.0 in)
1984
74.9 mm (2.9 in)
1985
66.0 mm (2.6 in)
1986
107.7 mm (4.2 in)
1987
55.6 mm (2.2 in)
1988
82.6 mm (3.3 in)
1989
56.9 mm (2.2 in)
1990
45.0 mm (1.8 in)
1991
52.1 mm (2.1 in)
1992
71.6 mm (2.8 in)
1993
125.0 mm (4.9 in)
1994
81.3 mm (3.2 in)
1995
64.8 mm (2.6 in)
1996
62.0 mm (2.4 in)
1997
77.0 mm (3.0 in)
1998
113.5 mm (4.5 in)
1999
64.0 mm (2.5 in)
2000
62.2 mm (2.4 in)
2001
66.0 mm (2.6 in)
2002
61.0 mm (2.4 in)
2003
66.0 mm (2.6 in)
2004
121.9 mm (4.8 in)
2005
83.1 mm (3.3 in)
2006
50.8 mm (2.0 in)
2007
160.5 mm (6.3 in)
2008
63.5 mm (2.5 in)
2009
78.7 mm (3.1 in)
2010
68.8 mm (2.7 in)
2011
106.7 mm (4.2 in)
2012
66.0 mm (2.6 in)
2013
63.5 mm (2.5 in)
2014
72.1 mm (2.8 in)
2015
127.8 mm (5.0 in)
2016
76.2 mm (3.0 in)
2017
50.5 mm (2.0 in)
2018
102.9 mm (4.1 in)
2019
71.1 mm (2.8 in)
2020
91.4 mm (3.6 in)
2021
43.2 mm (1.7 in)
Wettest five days (Rx5day)
The wettest five days of the year at Hamilton 2W, 1954 to 2021. The record is 278.6 mm (11.0 in) in 2018, marked on the chart; the median year is 117.9 mm (4.6 in).
Wettest five days (Rx5day) at Hamilton 2W by year
Year
Wettest five days (Rx5day)
1954
130.5 mm (5.1 in)
1955
100.1 mm (3.9 in)
1956
86.7 mm (3.4 in)
1957
101.6 mm (4.0 in)
1958
102.6 mm (4.0 in)
1959
140.5 mm (5.5 in)
1960
104.4 mm (4.1 in)
1961
127.4 mm (5.0 in)
1962
115.8 mm (4.6 in)
1963
121.2 mm (4.8 in)
1964
56.9 mm (2.2 in)
1965
180.6 mm (7.1 in)
1966
50.3 mm (2.0 in)
1967
127.8 mm (5.0 in)
1968
122.2 mm (4.8 in)
1969
162.9 mm (6.4 in)
1970
137.4 mm (5.4 in)
1971
77.0 mm (3.0 in)
1972
144.8 mm (5.7 in)
1973
108.4 mm (4.3 in)
1974
138.7 mm (5.5 in)
1975
81.8 mm (3.2 in)
1976
66.3 mm (2.6 in)
1977
143.7 mm (5.7 in)
1978
149.3 mm (5.9 in)
1979
114.0 mm (4.5 in)
1980
81.1 mm (3.2 in)
1981
160.6 mm (6.3 in)
1982
134.2 mm (5.3 in)
1983
80.3 mm (3.2 in)
1984
148.6 mm (5.9 in)
1985
131.3 mm (5.2 in)
1986
115.8 mm (4.6 in)
1987
117.8 mm (4.6 in)
1988
98.4 mm (3.9 in)
1989
86.9 mm (3.4 in)
1990
99.4 mm (3.9 in)
1991
65.3 mm (2.6 in)
1992
109.4 mm (4.3 in)
1993
192.2 mm (7.6 in)
1994
99.4 mm (3.9 in)
1995
93.9 mm (3.7 in)
1996
138.7 mm (5.5 in)
1997
143.8 mm (5.7 in)
1998
131.9 mm (5.2 in)
1999
96.0 mm (3.8 in)
2000
122.0 mm (4.8 in)
2001
117.9 mm (4.6 in)
2002
73.4 mm (2.9 in)
2003
118.4 mm (4.7 in)
2004
133.3 mm (5.2 in)
2005
131.4 mm (5.2 in)
2006
69.1 mm (2.7 in)
2007
181.1 mm (7.1 in)
2008
89.7 mm (3.5 in)
2009
126.1 mm (5.0 in)
2010
134.6 mm (5.3 in)
2011
115.1 mm (4.5 in)
2012
82.0 mm (3.2 in)
2013
187.2 mm (7.4 in)
2014
92.5 mm (3.6 in)
2015
141.8 mm (5.6 in)
2016
145.5 mm (5.7 in)
2017
80.8 mm (3.2 in)
2018
278.6 mm (11.0 in)
2019
172.6 mm (6.8 in)
2020
98.6 mm (3.9 in)
2021
72.2 mm (2.8 in)
Longest dry spell (CDD)
The longest dry spell of the year at Hamilton 2W, 1954 to 2021. The record is 50 days in 1999, marked on the chart; the median year is 26 days.
Longest dry spell (CDD) at Hamilton 2W by year
Year
Longest dry spell (CDD)
1954
39 days
1955
26 days
1956
37 days
1957
33 days
1958
36 days
1959
26 days
1960
26 days
1961
18 days
1962
24 days
1963
31 days
1964
20 days
1965
20 days
1966
26 days
1967
31 days
1968
46 days
1969
30 days
1970
28 days
1971
31 days
1972
24 days
1973
23 days
1974
25 days
1975
20 days
1976
32 days
1977
26 days
1978
22 days
1979
43 days
1980
33 days
1981
31 days
1982
19 days
1983
13 days
1984
35 days
1985
25 days
1986
34 days
1987
21 days
1988
31 days
1989
49 days
1990
28 days
1991
29 days
1992
19 days
1993
23 days
1994
32 days
1995
21 days
1996
31 days
1997
17 days
1998
19 days
1999
50 days
2000
22 days
2001
24 days
2002
46 days
2003
27 days
2004
25 days
2005
15 days
2006
34 days
2007
21 days
2008
17 days
2009
25 days
2010
41 days
2011
23 days
2012
27 days
2013
16 days
2014
20 days
2015
22 days
2016
20 days
2017
31 days
2018
20 days
2019
14 days
2020
22 days
2021
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
56 years with a frost
Across 56 years with a frost, the median last spring frost at Hamilton 2W falls on 25 April and the median first autumn frost on 11 October, which leaves a median of 170 days between them.
Fitted over all years, the growing season changes by -2.0 days per decade at this station.
Frost dates and growing season at Hamilton 2W
Measure
Median, all years
Earliest period
Recent period (1985 to 2018)
Recent against earliest
Fitted trend
Last spring frost
25 April
n/a
25 April
n/a
+0.5 days per decade
First autumn frost
11 October
n/a
7 October
n/a
-1.5 days per decade
Growing days
170 days
n/a
168 days
n/a
-2.0 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
64 years, 1955 to 2020
A day with at least 72.7 mm (2.9 in) of rain is expected about once in 2 years. A day with at least 160.5 mm (6.3 in) of rain is expected about once in 100 years.
Rainfall return levels at Hamilton 2W: the daily rain expected about once in a given number of years
Expected about once in
A day with at least
Note
2 years
72.7 mm (2.9 in)
5 years
95.0 mm (3.7 in)
10 years
110.3 mm (4.3 in)
25 years
130.1 mm (5.1 in)
50 years
145.2 mm (5.7 in)
100 years
160.5 mm (6.3 in)
Longer than the 64 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, 64 years of values from 1955 to 2020.
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: 160.5 mm (6.3 in) in 2007; 127.8 mm (5.0 in) in 2015; 125.0 mm (4.9 in) in 1993.
Station Changes
1 suspected
One change was suspected in the annual mean temperature of Hamilton 2W, at 1986. Each is measured against neighbouring stations.
Relative to 5 neighbouring stations, the station's annual mean temperature from 1986 ran 0.2 C (0.4 F) lower than in the years before (possible change).
Suspected changes in the annual mean temperature at Hamilton 2W, against neighbouring stations
Year
Shift (C)
Shift (F)
Strength
Neighbours
1986
-0.2
-0.4
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 Hamilton 2W standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Hamilton 2W 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.