Record envelope, standing records and threshold days for Chatom (USC00011566), Alabama, United States, with 71 years of record.
Key Facts for Chatom
Chatom (USC00011566) is a weather station in Alabama, United States at 31.47 latitude and -88.25 longitude, 87 m (285 ft) above sea level.
The station reports from 1949 to 2019, 71 years of record.
1,464 records set at Chatom still stand.
Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
Chatom set a daily record high maximum temperature of 36.7 C (98.1 F) on 2 October 2019.
About the Station
Location: Alabama, United States, 31.47 latitude, -88.25 longitude.
Elevation: 87 m (285 ft).
Period of record: 1949 to 2019, 71 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 Chatom. 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 Chatom, with 2026 drawn through them
Month
Highest record high
Lowest record low
2026 highest maximum
2026 lowest minimum
Jan
31.7 C (89.1 F)
-17.2 C (1.0 F)
n/a
n/a
Feb
31.1 C (88.0 F)
-14.4 C (6.1 F)
n/a
n/a
Mar
33.3 C (91.9 F)
-10.0 C (14.0 F)
n/a
n/a
Apr
33.9 C (93.0 F)
-2.8 C (27.0 F)
n/a
n/a
May
40.6 C (105.1 F)
2.2 C (36.0 F)
n/a
n/a
Jun
41.1 C (106.0 F)
5.6 C (42.1 F)
n/a
n/a
Jul
41.7 C (107.1 F)
10.6 C (51.1 F)
n/a
n/a
Aug
41.1 C (106.0 F)
9.4 C (48.9 F)
n/a
n/a
Sep
39.4 C (102.9 F)
2.2 C (36.0 F)
n/a
n/a
Oct
37.8 C (100.0 F)
-6.7 C (19.9 F)
n/a
n/a
Nov
32.2 C (90.0 F)
-10.0 C (14.0 F)
n/a
n/a
Dec
30.6 C (87.1 F)
-15.6 C (3.9 F)
n/a
n/a
Which Years Hold Standing Records
1,464 standing records
Year with most
1,464 records at Chatom still stand. 1996 holds the most, with 61.
Standing records at Chatom by the year they were set
Year set
Standing records
1949
5
1950
33
1951
46
1952
48
1953
29
1954
58
1955
42
1956
31
1957
33
1958
15
1959
16
1960
28
1961
21
1962
30
1963
22
1964
16
1965
10
1966
12
1967
30
1968
8
1969
14
1970
16
1971
28
1972
26
1973
16
1974
17
1975
19
1976
13
1977
19
1978
7
1979
13
1980
19
1981
23
1982
34
1983
23
1984
46
1985
25
1986
17
1987
18
1988
14
1989
20
1990
4
1991
22
1992
40
1993
33
1994
12
1995
19
1996
61
1997
11
1998
25
1999
23
2000
30
2001
17
2002
20
2003
10
2004
11
2005
11
2006
11
2007
14
2008
13
2009
11
2010
17
2011
11
2012
3
2013
14
2014
10
2015
14
2016
7
2017
12
2018
13
2019
5
All-Time Record Progression
6 new records
6 all-time records were set at Chatom between 11 January 1982 and 3 January 2017. Each dot is a new record.
When Chatom set new all-time records
Date
Kind
Detail
1982-01-11
Record low minimum temperature
Record low minimum temperature -16.7 C (1.9 F)
1982-01-12
Record low minimum temperature
Record low minimum temperature -17.2 C (1.0 F)
1986-08-17
Record high minimum temperature
Record high minimum temperature 28.9 C (84.0 F)
1993-03-14
Record low maximum temperature
Record low maximum temperature -3.9 C (25.0 F)
1998-09-29
Record daily precipitation
Record daily precipitation 261.6 mm (10.3 in)
2017-01-03
Record daily precipitation
Record daily precipitation 264.2 mm (10.4 in)
Wettest Day of Each Month
Jan: 264.2 mm (10.4 in)
The wettest day on record for each calendar month at Chatom. The most was 264.2 mm (10.4 in) on 3 January 2017.
Record daily precipitation for each month at Chatom
Month
Record daily precipitation (mm)
Date
Jan
264.2 mm (10.4 in)
3 January 2017
Feb
164.6 mm (6.5 in)
18 February 1961
Mar
121.9 mm (4.8 in)
16 March 1990
Apr
180.3 mm (7.1 in)
15 April 2018
May
123.2 mm (4.9 in)
3 May 2010
Jun
148.6 mm (5.9 in)
8 June 1978
Jul
253.7 mm (10.0 in)
8 July 1956
Aug
135.9 mm (5.4 in)
4 August 1995
Sep
261.6 mm (10.3 in)
29 September 1998
Oct
125.7 mm (4.9 in)
31 October 1993
Nov
119.1 mm (4.7 in)
14 November 1957
Dec
155.7 mm (6.1 in)
10 December 1961
Period of Record Coverage
1949 to 2019
Complete yearUnder 90 percent of days
71 years of record at Chatom, 1949 to 2019. 9 years have data for under 90 percent of days and are left out of rankings: 1949, 1987, 1988, 1989, 1990, 2005, 2016, 2018 and others.
Cooler than the station meanWarmer than the station mean
One stripe for each of 56 complete years at Chatom, 1950 to 2018. Blue stripes are years cooler than the station's own mean of 18.5 C (65.3 F); red stripes are warmer. The coolest year was 1993, at 16.0 C (60.8 F), and the warmest was 1998, at 19.9 C (67.8 F). The strongest colour marks a difference of 2.5 C (4.5 F).
Annual mean temperature at Chatom as warming stripes, 1950 to 2018
Year
Annual mean temperature
Difference from the station mean
1950
18.7 C
+0.20 C
1951
19.3 C
+0.78 C
1952
18.6 C
+0.10 C
1953
19.0 C
+0.46 C
1954
19.2 C
+0.71 C
1955
19.0 C
+0.48 C
1956
18.9 C
+0.38 C
1957
19.3 C
+0.76 C
1958
17.7 C
-0.85 C
1959
18.4 C
-0.12 C
1960
17.8 C
-0.70 C
1961
17.9 C
-0.58 C
1962
18.3 C
-0.18 C
1963
17.8 C
-0.71 C
1964
18.9 C
+0.34 C
1965
19.2 C
+0.68 C
1966
18.6 C
+0.04 C
1967
18.8 C
+0.29 C
1968
18.1 C
-0.41 C
1969
18.4 C
-0.09 C
1970
18.3 C
-0.19 C
1971
18.9 C
+0.34 C
1972
19.0 C
+0.47 C
1974
19.0 C
+0.53 C
1975
18.2 C
-0.29 C
1977
19.0 C
+0.48 C
1978
18.7 C
+0.19 C
1979
18.2 C
-0.31 C
1981
18.9 C
+0.42 C
1982
19.7 C
+1.23 C
1983
17.3 C
-1.26 C
1984
17.6 C
-0.91 C
1985
18.4 C
-0.14 C
1986
19.1 C
+0.58 C
1991
19.0 C
+0.48 C
1993
16.0 C
-2.50 C
1995
18.1 C
-0.39 C
1997
18.2 C
-0.27 C
1998
19.9 C
+1.36 C
1999
19.1 C
+0.60 C
2000
19.2 C
+0.70 C
2001
18.6 C
+0.13 C
2002
19.0 C
+0.51 C
2003
18.6 C
+0.10 C
2004
18.5 C
-0.01 C
2007
18.6 C
+0.04 C
2008
17.7 C
-0.86 C
2009
17.9 C
-0.58 C
2010
17.8 C
-0.71 C
2011
18.2 C
-0.27 C
2012
19.1 C
+0.54 C
2013
17.7 C
-0.77 C
2014
17.4 C
-1.11 C
2015
18.3 C
-0.21 C
2017
18.9 C
+0.36 C
2018
18.5 C
+0.01 C
The fitted trend in annual mean temperature here over 1950 to 2018 is -0.06 C (-0.14 to 0.03) per decade. The interval includes zero, so the trend is not clearly different from zero. In Fahrenheit: -0.10 F (-0.26 to 0.05) 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 Chatom
Measure
Per decade (C)
Per decade (F)
Period
Complete years
Reading
Annual mean temperature
-0.06 C (-0.14 to 0.03) per decade
-0.10 F (-0.26 to 0.05) per decade
1950 to 2018
56
Not clearly different from zero
Mean daily maximum
-0.12 C (-0.21 to -0.02) per decade
-0.21 F (-0.39 to -0.04) per decade
1950 to 2018
56
Fall
Mean daily minimum
0.0 C (-0.1 to 0.1) per decade
0.0 F (-0.2 to 0.2) per decade
1950 to 2018
56
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
1949 to 2019
Yearly extremes at Chatom: the record and the median year
Measure
Record
Year of the record
Median year
Years with a value
Hottest day (TXx)
41.7 C (107.1 F)
1952
37.2 C (99.0 F)
71
Coldest night (TNn)
-17.2 C (1.0 F)
1982
-9.4 C (15.1 F)
71
Wettest day (Rx1day)
264.2 mm (10.4 in)
2017
101.6 mm (4.0 in)
71
Wettest five days (Rx5day)
510.5 mm (20.1 in)
1998
150.4 mm (5.9 in)
71
Longest dry spell (CDD)
42 days
2010
23 days
71
Hottest day (TXx)
The hottest day of the year at Chatom, 1949 to 2019. The record is 41.7 C (107.1 F) in 1952, marked on the chart; the median year is 37.2 C (99.0 F).
Hottest day (TXx) at Chatom by year
Year
Hottest day (TXx)
1949
35.0 C (95.0 F)
1950
37.8 C (100.0 F)
1951
40.0 C (104.0 F)
1952
41.7 C (107.1 F)
1953
38.9 C (102.0 F)
1954
41.1 C (106.0 F)
1955
37.8 C (100.0 F)
1956
37.2 C (99.0 F)
1957
36.7 C (98.1 F)
1958
36.1 C (97.0 F)
1959
36.7 C (98.1 F)
1960
37.2 C (99.0 F)
1961
35.6 C (96.1 F)
1962
37.8 C (100.0 F)
1963
39.4 C (102.9 F)
1964
40.6 C (105.1 F)
1965
37.2 C (99.0 F)
1966
37.2 C (99.0 F)
1967
37.2 C (99.0 F)
1968
36.7 C (98.1 F)
1969
38.9 C (102.0 F)
1970
37.2 C (99.0 F)
1971
36.1 C (97.0 F)
1972
37.2 C (99.0 F)
1973
36.1 C (97.0 F)
1974
36.1 C (97.0 F)
1975
34.4 C (93.9 F)
1976
36.7 C (98.1 F)
1977
41.1 C (106.0 F)
1978
37.8 C (100.0 F)
1979
36.1 C (97.0 F)
1980
40.0 C (104.0 F)
1981
38.9 C (102.0 F)
1982
36.7 C (98.1 F)
1983
36.7 C (98.1 F)
1984
37.2 C (99.0 F)
1985
39.4 C (102.9 F)
1986
37.2 C (99.0 F)
1987
37.8 C (100.0 F)
1988
37.8 C (100.0 F)
1989
36.1 C (97.0 F)
1990
28.3 C (82.9 F)
1991
37.2 C (99.0 F)
1992
33.9 C (93.0 F)
1993
35.6 C (96.1 F)
1994
35.0 C (95.0 F)
1995
37.2 C (99.0 F)
1996
40.6 C (105.1 F)
1997
36.7 C (98.1 F)
1998
39.4 C (102.9 F)
1999
38.3 C (100.9 F)
2000
41.1 C (106.0 F)
2001
36.1 C (97.0 F)
2002
37.8 C (100.0 F)
2003
35.0 C (95.0 F)
2004
36.1 C (97.0 F)
2005
36.1 C (97.0 F)
2006
38.9 C (102.0 F)
2007
39.4 C (102.9 F)
2008
37.2 C (99.0 F)
2009
37.8 C (100.0 F)
2010
38.9 C (102.0 F)
2011
39.4 C (102.9 F)
2012
37.2 C (99.0 F)
2013
36.7 C (98.1 F)
2014
36.7 C (98.1 F)
2015
36.7 C (98.1 F)
2016
37.8 C (100.0 F)
2017
35.0 C (95.0 F)
2018
36.7 C (98.1 F)
2019
37.2 C (99.0 F)
Coldest night (TNn)
The coldest night of the year at Chatom, 1949 to 2019. The record is -17.2 C (1.0 F) in 1982, marked on the chart; the median year is -9.4 C (15.1 F).
Coldest night (TNn) at Chatom by year
Year
Coldest night (TNn)
1949
-5.6 C (21.9 F)
1950
-7.8 C (18.0 F)
1951
-13.3 C (8.1 F)
1952
-7.8 C (18.0 F)
1953
-8.3 C (17.1 F)
1954
-7.8 C (18.0 F)
1955
-9.4 C (15.1 F)
1956
-8.9 C (16.0 F)
1957
-10.0 C (14.0 F)
1958
-9.4 C (15.1 F)
1959
-9.4 C (15.1 F)
1960
-10.0 C (14.0 F)
1961
-10.6 C (12.9 F)
1962
-15.0 C (5.0 F)
1963
-15.6 C (3.9 F)
1964
-11.1 C (12.0 F)
1965
-10.0 C (14.0 F)
1966
-13.9 C (7.0 F)
1967
-7.2 C (19.0 F)
1968
-7.2 C (19.0 F)
1969
-10.0 C (14.0 F)
1970
-13.3 C (8.1 F)
1971
-11.1 C (12.0 F)
1972
-11.7 C (10.9 F)
1973
-8.3 C (17.1 F)
1974
-6.7 C (19.9 F)
1975
-8.9 C (16.0 F)
1976
-9.4 C (15.1 F)
1977
-15.0 C (5.0 F)
1978
-11.1 C (12.0 F)
1979
-11.7 C (10.9 F)
1980
-9.4 C (15.1 F)
1981
-11.1 C (12.0 F)
1982
-17.2 C (1.0 F)
1983
-15.6 C (3.9 F)
1984
-10.0 C (14.0 F)
1985
-16.1 C (3.0 F)
1986
-12.8 C (9.0 F)
1987
-6.7 C (19.9 F)
1988
-7.8 C (18.0 F)
1989
-8.9 C (16.0 F)
1990
-6.1 C (21.0 F)
1991
-8.3 C (17.1 F)
1992
-5.6 C (21.9 F)
1993
-10.0 C (14.0 F)
1994
-9.4 C (15.1 F)
1995
-7.8 C (18.0 F)
1996
-12.8 C (9.0 F)
1997
-8.9 C (16.0 F)
1998
-5.6 C (21.9 F)
1999
-10.0 C (14.0 F)
2000
-9.4 C (15.1 F)
2001
-8.3 C (17.1 F)
2002
-8.3 C (17.1 F)
2003
-10.6 C (12.9 F)
2004
-5.6 C (21.9 F)
2005
-5.6 C (21.9 F)
2006
-6.1 C (21.0 F)
2007
-6.1 C (21.0 F)
2008
-8.9 C (16.0 F)
2009
-7.2 C (19.0 F)
2010
-10.0 C (14.0 F)
2011
-8.3 C (17.1 F)
2012
-8.9 C (16.0 F)
2013
-7.8 C (18.0 F)
2014
-11.7 C (10.9 F)
2015
-10.0 C (14.0 F)
2016
-7.8 C (18.0 F)
2017
-8.3 C (17.1 F)
2018
-12.2 C (10.0 F)
2019
-5.0 C (23.0 F)
Wettest day (Rx1day)
The wettest day of the year at Chatom, 1949 to 2019. The record is 264.2 mm (10.4 in) in 2017, marked on the chart; the median year is 101.6 mm (4.0 in).
Wettest day (Rx1day) at Chatom by year
Year
Wettest day (Rx1day)
1949
63.2 mm (2.5 in)
1950
61.5 mm (2.4 in)
1951
96.0 mm (3.8 in)
1952
56.1 mm (2.2 in)
1953
96.0 mm (3.8 in)
1954
171.5 mm (6.8 in)
1955
106.7 mm (4.2 in)
1956
253.7 mm (10.0 in)
1957
119.1 mm (4.7 in)
1958
81.8 mm (3.2 in)
1959
144.0 mm (5.7 in)
1960
123.2 mm (4.9 in)
1961
164.6 mm (6.5 in)
1962
89.7 mm (3.5 in)
1963
68.6 mm (2.7 in)
1964
87.9 mm (3.5 in)
1965
101.6 mm (4.0 in)
1966
64.3 mm (2.5 in)
1967
78.7 mm (3.1 in)
1968
90.2 mm (3.6 in)
1969
60.2 mm (2.4 in)
1970
106.7 mm (4.2 in)
1971
63.5 mm (2.5 in)
1972
93.0 mm (3.7 in)
1973
73.7 mm (2.9 in)
1974
104.1 mm (4.1 in)
1975
132.1 mm (5.2 in)
1976
63.5 mm (2.5 in)
1977
75.4 mm (3.0 in)
1978
148.6 mm (5.9 in)
1979
121.9 mm (4.8 in)
1980
111.8 mm (4.4 in)
1981
108.0 mm (4.3 in)
1982
94.0 mm (3.7 in)
1983
147.3 mm (5.8 in)
1984
113.0 mm (4.4 in)
1985
105.2 mm (4.1 in)
1986
94.0 mm (3.7 in)
1987
71.1 mm (2.8 in)
1988
101.6 mm (4.0 in)
1989
99.6 mm (3.9 in)
1990
121.9 mm (4.8 in)
1991
114.3 mm (4.5 in)
1992
81.3 mm (3.2 in)
1993
125.7 mm (4.9 in)
1994
62.2 mm (2.4 in)
1995
135.9 mm (5.4 in)
1996
108.2 mm (4.3 in)
1997
76.7 mm (3.0 in)
1998
261.6 mm (10.3 in)
1999
154.9 mm (6.1 in)
2000
80.0 mm (3.1 in)
2001
106.9 mm (4.2 in)
2002
112.5 mm (4.4 in)
2003
96.5 mm (3.8 in)
2004
96.5 mm (3.8 in)
2005
137.7 mm (5.4 in)
2006
96.5 mm (3.8 in)
2007
109.2 mm (4.3 in)
2008
71.1 mm (2.8 in)
2009
128.3 mm (5.1 in)
2010
123.2 mm (4.9 in)
2011
100.3 mm (3.9 in)
2012
91.4 mm (3.6 in)
2013
79.2 mm (3.1 in)
2014
106.7 mm (4.2 in)
2015
94.0 mm (3.7 in)
2016
81.5 mm (3.2 in)
2017
264.2 mm (10.4 in)
2018
180.3 mm (7.1 in)
2019
182.9 mm (7.2 in)
Wettest five days (Rx5day)
The wettest five days of the year at Chatom, 1949 to 2019. The record is 510.5 mm (20.1 in) in 1998, marked on the chart; the median year is 150.4 mm (5.9 in).
Wettest five days (Rx5day) at Chatom by year
Year
Wettest five days (Rx5day)
1949
114.0 mm (4.5 in)
1950
123.7 mm (4.9 in)
1951
172.7 mm (6.8 in)
1952
83.4 mm (3.3 in)
1953
236.7 mm (9.3 in)
1954
180.6 mm (7.1 in)
1955
222.0 mm (8.7 in)
1956
281.6 mm (11.1 in)
1957
164.8 mm (6.5 in)
1958
113.6 mm (4.5 in)
1959
224.0 mm (8.8 in)
1960
146.6 mm (5.8 in)
1961
346.4 mm (13.6 in)
1962
89.7 mm (3.5 in)
1963
143.8 mm (5.7 in)
1964
185.9 mm (7.3 in)
1965
121.5 mm (4.8 in)
1966
140.1 mm (5.5 in)
1967
111.8 mm (4.4 in)
1968
122.0 mm (4.8 in)
1969
95.8 mm (3.8 in)
1970
128.3 mm (5.1 in)
1971
130.0 mm (5.1 in)
1972
119.4 mm (4.7 in)
1973
133.4 mm (5.3 in)
1974
153.1 mm (6.0 in)
1975
181.4 mm (7.1 in)
1976
135.4 mm (5.3 in)
1977
112.9 mm (4.4 in)
1978
150.7 mm (5.9 in)
1979
228.3 mm (9.0 in)
1980
250.7 mm (9.9 in)
1981
154.0 mm (6.1 in)
1982
143.8 mm (5.7 in)
1983
174.5 mm (6.9 in)
1984
128.2 mm (5.0 in)
1985
196.8 mm (7.7 in)
1986
227.9 mm (9.0 in)
1987
117.1 mm (4.6 in)
1988
150.4 mm (5.9 in)
1989
121.2 mm (4.8 in)
1990
157.5 mm (6.2 in)
1991
196.5 mm (7.7 in)
1992
177.8 mm (7.0 in)
1993
125.7 mm (4.9 in)
1994
137.2 mm (5.4 in)
1995
184.2 mm (7.3 in)
1996
145.3 mm (5.7 in)
1997
103.6 mm (4.1 in)
1998
510.5 mm (20.1 in)
1999
177.7 mm (7.0 in)
2000
109.0 mm (4.3 in)
2001
162.3 mm (6.4 in)
2002
218.2 mm (8.6 in)
2003
182.9 mm (7.2 in)
2004
128.3 mm (5.1 in)
2005
221.5 mm (8.7 in)
2006
170.0 mm (6.7 in)
2007
128.5 mm (5.1 in)
2008
96.5 mm (3.8 in)
2009
259.8 mm (10.2 in)
2010
138.4 mm (5.4 in)
2011
120.6 mm (4.7 in)
2012
161.2 mm (6.3 in)
2013
119.8 mm (4.7 in)
2014
176.3 mm (6.9 in)
2015
130.5 mm (5.1 in)
2016
96.6 mm (3.8 in)
2017
297.2 mm (11.7 in)
2018
239.8 mm (9.4 in)
2019
182.9 mm (7.2 in)
Longest dry spell (CDD)
The longest dry spell of the year at Chatom, 1949 to 2019. The record is 42 days in 2010, marked on the chart; the median year is 23 days.
Longest dry spell (CDD) at Chatom by year
Year
Longest dry spell (CDD)
1949
33 days
1950
17 days
1951
41 days
1952
32 days
1953
24 days
1954
22 days
1955
21 days
1956
21 days
1957
19 days
1958
17 days
1959
15 days
1960
20 days
1961
30 days
1962
19 days
1963
33 days
1964
22 days
1965
26 days
1966
20 days
1967
29 days
1968
24 days
1969
21 days
1970
20 days
1971
36 days
1972
30 days
1973
15 days
1974
17 days
1975
19 days
1976
20 days
1977
19 days
1978
23 days
1979
31 days
1980
18 days
1981
22 days
1982
26 days
1983
20 days
1984
25 days
1985
31 days
1986
19 days
1987
34 days
1988
30 days
1989
29 days
1990
12 days
1991
29 days
1992
15 days
1993
22 days
1994
15 days
1995
20 days
1996
27 days
1997
24 days
1998
34 days
1999
21 days
2000
30 days
2001
39 days
2002
29 days
2003
28 days
2004
24 days
2005
25 days
2006
31 days
2007
32 days
2008
24 days
2009
20 days
2010
42 days
2011
27 days
2012
23 days
2013
22 days
2014
23 days
2015
27 days
2016
30 days
2017
16 days
2018
11 days
2019
9 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 Chatom falls on 27 March and the median first autumn frost on 8 November, which leaves a median of 230 days between them.
Fitted over all years, the growing season changes by +3.3 days per decade at this station.
Frost dates and growing season at Chatom
Measure
Median, all years
Earliest period
Recent period (1978 to 2018)
Recent against earliest
Fitted trend
Last spring frost
27 March
n/a
26 March
n/a
-1.6 days per decade
First autumn frost
8 November
n/a
14 November
n/a
+1.7 days per decade
Growing days
230 days
n/a
235 days
n/a
+3.3 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
58 years, 1950 to 2015
A day with at least 98.4 mm (3.9 in) of rain is expected about once in 2 years. A day with at least 243.5 mm (9.6 in) of rain is expected about once in 100 years.
Rainfall return levels at Chatom: the daily rain expected about once in a given number of years
Expected about once in
A day with at least
Note
2 years
98.4 mm (3.9 in)
5 years
130.4 mm (5.1 in)
10 years
154.1 mm (6.1 in)
25 years
187.2 mm (7.4 in)
50 years
214.3 mm (8.4 in)
100 years
243.5 mm (9.6 in)
Longer than the 58 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, 58 years of values from 1950 to 2015.
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: 261.6 mm (10.3 in) in 1998; 253.7 mm (10.0 in) in 1956; 171.5 mm (6.8 in) in 1954.
Station Changes
No change in the annual mean temperature of this station was found against its neighbours.
Climate Twins
2001 to 2018 against 1961 to 1990
Over 2001 to 2018, Chatom had a mean temperature of 18.3 C (65.0 F) and 1,569.8 mm (61.8 in) of rain a year. The 3 stations whose 1961 to 1990 climate was closest to that are McComb AP (United States, 213 km away), Hattiesburg 5SW (United States, 106 km away) and Collins (United States, 125 km away).
Climate twins of Chatom: stations whose 1961 to 1990 climate is closest to its 2001 to 2018 climate
Twins are stations, not cities. A twin is one of the three stations at least 100 km away whose earlier climate is closest to this station's recent one, so a close match does not mean the two places look alike in other ways. A station move or a gap in a record can change that station's averages. The list describes past climate; it is not a forecast and does not say what caused any change. How twins are found, and a search for any station.
Download the Data
Data for Chatom standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Chatom 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.