Record envelope, standing records and threshold days for Chatham (USC00161703), Louisiana, United States, with 35 years of record.
Key Facts for Chatham
Chatham (USC00161703) is a weather station in Louisiana, United States at 32.32 latitude and -92.45 longitude, 55 m (180 ft) above sea level.
The station reports from 1941 to 1975, 35 years of record.
1,464 records set at Chatham still stand.
Records are tracked for prcp: an element needs 30 years of data to be eligible.
Chatham set a daily record precipitation of 31.2 mm (1.2 in) on 15 June 1975.
About the Station
Location: Louisiana, United States, 32.32 latitude, -92.45 longitude.
Elevation: 55 m (180 ft).
Period of record: 1941 to 1975, 35 years.
Eligible elements: prcp.
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 Chatham. 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 Chatham, with 2026 drawn through them
Month
Highest record high
Lowest record low
2026 highest maximum
2026 lowest minimum
Jan
27.8 C (82.0 F)
-20.6 C (-5.1 F)
n/a
n/a
Feb
29.4 C (84.9 F)
-21.7 C (-7.1 F)
n/a
n/a
Mar
32.8 C (91.0 F)
-7.2 C (19.0 F)
n/a
n/a
Apr
33.3 C (91.9 F)
-2.2 C (28.0 F)
n/a
n/a
May
36.1 C (97.0 F)
3.9 C (39.0 F)
n/a
n/a
Jun
39.4 C (102.9 F)
8.3 C (46.9 F)
n/a
n/a
Jul
40.0 C (104.0 F)
11.1 C (52.0 F)
n/a
n/a
Aug
42.2 C (108.0 F)
10.0 C (50.0 F)
n/a
n/a
Sep
41.1 C (106.0 F)
1.7 C (35.1 F)
n/a
n/a
Oct
36.1 C (97.0 F)
-6.1 C (21.0 F)
n/a
n/a
Nov
31.1 C (88.0 F)
-9.4 C (15.1 F)
n/a
n/a
Dec
27.2 C (81.0 F)
-13.9 C (7.0 F)
n/a
n/a
Which Years Hold Standing Records
1,464 standing records
Year with most
1,464 records at Chatham still stand. 1963 holds the most, with 106.
Standing records at Chatham by the year they were set
Year set
Standing records
1948
61
1949
38
1950
69
1951
76
1952
82
1953
48
1954
77
1955
71
1956
51
1957
45
1958
41
1959
40
1960
49
1961
56
1962
53
1963
106
1964
36
1965
45
1966
33
1967
62
1968
26
1969
48
1970
55
1971
39
1972
47
1973
38
1974
56
1975
16
Wettest Day of Each Month
Feb: 178.6 mm (7.0 in)
The wettest day on record for each calendar month at Chatham. The most was 178.6 mm (7.0 in) on 10 February 1966.
Record daily precipitation for each month at Chatham
Month
Record daily precipitation (mm)
Date
Jan
114.6 mm (4.5 in)
3 January 1951
Feb
178.6 mm (7.0 in)
10 February 1966
Mar
106.7 mm (4.2 in)
13 March 1975
Apr
109.2 mm (4.3 in)
12 April 1974
May
107.4 mm (4.2 in)
7 May 1971
Jun
138.2 mm (5.4 in)
1 June 1946
Jul
81.5 mm (3.2 in)
22 July 1958
Aug
76.2 mm (3.0 in)
31 August 1944
Sep
123.2 mm (4.9 in)
30 September 1943
Oct
127.8 mm (5.0 in)
31 October 1941
Nov
111.8 mm (4.4 in)
22 November 1941
Dec
99.8 mm (3.9 in)
16 December 1948
Period of Record Coverage
1948 to 1975
Complete yearUnder 90 percent of days
28 years of record at Chatham, 1948 to 1975. 3 years have data for under 90 percent of days and are left out of rankings: 1948, 1949, 1975.
Cooler than the station meanWarmer than the station mean
One stripe for each of 21 complete years at Chatham, 1950 to 1974. Blue stripes are years cooler than the station's own mean of 17.7 C (63.9 F); red stripes are warmer. The coolest year was 1968, at 16.9 C (62.3 F), and the warmest was 1954, at 18.7 C (65.7 F). The strongest colour marks a difference of 1.0 C (1.8 F).
Annual mean temperature at Chatham as warming stripes, 1950 to 1974
Year
Annual mean temperature
Difference from the station mean
1950
17.7 C
-0.04 C
1951
17.9 C
+0.19 C
1952
17.5 C
-0.20 C
1953
18.1 C
+0.37 C
1954
18.7 C
+0.99 C
1955
18.0 C
+0.23 C
1956
18.2 C
+0.48 C
1959
17.5 C
-0.27 C
1960
17.2 C
-0.57 C
1961
17.1 C
-0.67 C
1962
17.6 C
-0.10 C
1963
17.8 C
+0.09 C
1964
18.1 C
+0.33 C
1965
18.4 C
+0.63 C
1966
17.5 C
-0.24 C
1967
17.6 C
-0.11 C
1968
16.9 C
-0.88 C
1970
17.3 C
-0.40 C
1971
17.8 C
+0.10 C
1973
17.9 C
+0.12 C
1974
17.7 C
-0.07 C
This station does not have enough complete years (30 are needed) to fit a temperature trend.
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
1941 to 1975
Yearly extremes at Chatham: 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)
1948
37.5 C (99.5 F)
28
Coldest night (TNn)
-21.7 C (-7.1 F)
1951
-9.4 C (15.1 F)
28
Wettest day (Rx1day)
178.6 mm (7.0 in)
1966
99.4 mm (3.9 in)
34
Wettest five days (Rx5day)
214.8 mm (8.5 in)
1971
134.2 mm (5.3 in)
34
Longest dry spell (CDD)
60 days
1947
22 days
34
Hottest day (TXx)
The hottest day of the year at Chatham, 1941 to 1975. The record is 42.2 C (108.0 F) in 1948, marked on the chart; the median year is 37.5 C (99.5 F).
Hottest day (TXx) at Chatham by year
Year
Hottest day (TXx)
1941
n/a
1942
n/a
1943
n/a
1944
n/a
1946
n/a
1947
n/a
1948
42.2 C (108.0 F)
1949
33.3 C (91.9 F)
1950
36.1 C (97.0 F)
1951
41.1 C (106.0 F)
1952
39.4 C (102.9 F)
1953
38.9 C (102.0 F)
1954
40.6 C (105.1 F)
1955
36.7 C (98.1 F)
1956
39.4 C (102.9 F)
1957
37.2 C (99.0 F)
1958
36.7 C (98.1 F)
1959
37.2 C (99.0 F)
1960
39.4 C (102.9 F)
1961
36.7 C (98.1 F)
1962
41.7 C (107.1 F)
1963
40.0 C (104.0 F)
1964
41.1 C (106.0 F)
1965
38.3 C (100.9 F)
1966
39.4 C (102.9 F)
1967
37.2 C (99.0 F)
1968
36.7 C (98.1 F)
1969
39.4 C (102.9 F)
1970
37.2 C (99.0 F)
1971
37.8 C (100.0 F)
1972
37.2 C (99.0 F)
1973
36.7 C (98.1 F)
1974
37.2 C (99.0 F)
1975
33.9 C (93.0 F)
Coldest night (TNn)
The coldest night of the year at Chatham, 1941 to 1975. The record is -21.7 C (-7.1 F) in 1951, marked on the chart; the median year is -9.4 C (15.1 F).
Coldest night (TNn) at Chatham by year
Year
Coldest night (TNn)
1941
n/a
1942
n/a
1943
n/a
1944
n/a
1946
n/a
1947
n/a
1948
-7.2 C (19.0 F)
1949
-11.7 C (10.9 F)
1950
-10.6 C (12.9 F)
1951
-21.7 C (-7.1 F)
1952
-8.9 C (16.0 F)
1953
-7.8 C (18.0 F)
1954
-7.8 C (18.0 F)
1955
-11.1 C (12.0 F)
1956
-7.8 C (18.0 F)
1957
-11.1 C (12.0 F)
1958
-10.0 C (14.0 F)
1959
-9.4 C (15.1 F)
1960
-8.9 C (16.0 F)
1961
-8.9 C (16.0 F)
1962
-20.6 C (-5.1 F)
1963
-16.1 C (3.0 F)
1964
-12.2 C (10.0 F)
1965
-9.4 C (15.1 F)
1966
-12.8 C (9.0 F)
1967
-7.8 C (18.0 F)
1968
-8.3 C (17.1 F)
1969
-9.4 C (15.1 F)
1970
-11.7 C (10.9 F)
1971
-9.4 C (15.1 F)
1972
-9.4 C (15.1 F)
1973
-8.3 C (17.1 F)
1974
-6.1 C (21.0 F)
1975
-8.9 C (16.0 F)
Wettest day (Rx1day)
The wettest day of the year at Chatham, 1941 to 1975. The record is 178.6 mm (7.0 in) in 1966, marked on the chart; the median year is 99.4 mm (3.9 in).
Wettest day (Rx1day) at Chatham by year
Year
Wettest day (Rx1day)
1941
127.8 mm (5.0 in)
1942
103.6 mm (4.1 in)
1943
123.2 mm (4.9 in)
1944
76.2 mm (3.0 in)
1946
138.2 mm (5.4 in)
1947
110.5 mm (4.4 in)
1948
99.8 mm (3.9 in)
1949
105.4 mm (4.1 in)
1950
105.4 mm (4.1 in)
1951
114.6 mm (4.5 in)
1952
52.8 mm (2.1 in)
1953
88.6 mm (3.5 in)
1954
79.8 mm (3.1 in)
1955
105.4 mm (4.1 in)
1956
63.5 mm (2.5 in)
1957
101.6 mm (4.0 in)
1958
81.5 mm (3.2 in)
1959
59.4 mm (2.3 in)
1960
49.8 mm (2.0 in)
1961
99.1 mm (3.9 in)
1962
72.1 mm (2.8 in)
1963
47.8 mm (1.9 in)
1964
71.4 mm (2.8 in)
1965
104.9 mm (4.1 in)
1966
178.6 mm (7.0 in)
1967
75.7 mm (3.0 in)
1968
88.4 mm (3.5 in)
1969
91.7 mm (3.6 in)
1970
104.4 mm (4.1 in)
1971
107.4 mm (4.2 in)
1972
63.2 mm (2.5 in)
1973
80.5 mm (3.2 in)
1974
109.2 mm (4.3 in)
1975
106.7 mm (4.2 in)
Wettest five days (Rx5day)
The wettest five days of the year at Chatham, 1941 to 1975. The record is 214.8 mm (8.5 in) in 1971, marked on the chart; the median year is 134.2 mm (5.3 in).
Wettest five days (Rx5day) at Chatham by year
Year
Wettest five days (Rx5day)
1941
155.7 mm (6.1 in)
1942
184.7 mm (7.3 in)
1943
125.5 mm (4.9 in)
1944
191.1 mm (7.5 in)
1946
145.1 mm (5.7 in)
1947
211.8 mm (8.3 in)
1948
120.4 mm (4.7 in)
1949
117.6 mm (4.6 in)
1950
148.9 mm (5.9 in)
1951
144.8 mm (5.7 in)
1952
72.7 mm (2.9 in)
1953
165.2 mm (6.5 in)
1954
103.1 mm (4.1 in)
1955
158.0 mm (6.2 in)
1956
121.4 mm (4.8 in)
1957
129.5 mm (5.1 in)
1958
177.4 mm (7.0 in)
1959
76.5 mm (3.0 in)
1960
66.1 mm (2.6 in)
1961
186.0 mm (7.3 in)
1962
105.9 mm (4.2 in)
1963
74.2 mm (2.9 in)
1964
108.2 mm (4.3 in)
1965
132.9 mm (5.2 in)
1966
205.8 mm (8.1 in)
1967
135.4 mm (5.3 in)
1968
142.0 mm (5.6 in)
1969
141.2 mm (5.6 in)
1970
129.3 mm (5.1 in)
1971
214.8 mm (8.5 in)
1972
121.2 mm (4.8 in)
1973
130.0 mm (5.1 in)
1974
110.5 mm (4.4 in)
1975
214.1 mm (8.4 in)
Longest dry spell (CDD)
The longest dry spell of the year at Chatham, 1941 to 1975. The record is 60 days in 1947, marked on the chart; the median year is 22 days.
Longest dry spell (CDD) at Chatham by year
Year
Longest dry spell (CDD)
1941
17 days
1942
37 days
1943
21 days
1944
21 days
1946
26 days
1947
60 days
1948
29 days
1949
22 days
1950
14 days
1951
18 days
1952
52 days
1953
36 days
1954
22 days
1955
21 days
1956
21 days
1957
16 days
1958
40 days
1959
16 days
1960
17 days
1961
26 days
1962
23 days
1963
29 days
1964
28 days
1965
30 days
1966
16 days
1967
29 days
1968
17 days
1969
32 days
1970
26 days
1971
21 days
1972
18 days
1973
15 days
1974
16 days
1975
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
21 years with a frost
Across 21 years with a frost, the median last spring frost at Chatham falls on 25 March and the median first autumn frost on 30 October, which leaves a median of 218 days between them.
Frost dates and growing season at Chatham
Measure
Median, all years
Earliest period
Recent period (1950 to 1974)
Recent against earliest
Fitted trend
Last spring frost
25 March
n/a
25 March
n/a
n/a
First autumn frost
30 October
n/a
30 October
n/a
n/a
Growing days
218 days
n/a
218 days
n/a
n/a
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.
Download the Data
Data for Chatham standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Chatham 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.