Record envelope, standing records and threshold days for Baton Rouge (USC00160555), Louisiana, United States, with 87 years of record.
Key Facts for Baton Rouge
Baton Rouge (USC00160555) is a weather station in Louisiana, United States at 30.43 latitude and -91.21 longitude, 6 m (20 ft) above sea level.
The station reports from 1892 to 1978, 87 years of record.
1,464 records set at Baton Rouge still stand.
Records are tracked for tmax, tmin, prcp: an element needs 30 years of data to be eligible.
Baton Rouge set a daily record precipitation of 50.8 mm (2.0 in) on 27 November 1978.
About the Station
Location: Louisiana, United States, 30.43 latitude, -91.21 longitude.
Elevation: 6 m (20 ft).
Period of record: 1892 to 1978, 87 years.
Eligible elements: tmax, tmin, 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 Baton Rouge. 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 Baton Rouge, with 2026 drawn through them
Month
Highest record high
Lowest record low
2026 highest maximum
2026 lowest minimum
Jan
29.4 C (84.9 F)
-11.7 C (10.9 F)
n/a
n/a
Feb
31.1 C (88.0 F)
-16.7 C (1.9 F)
n/a
n/a
Mar
33.9 C (93.0 F)
-5.0 C (23.0 F)
n/a
n/a
Apr
35.6 C (96.1 F)
-0.6 C (30.9 F)
n/a
n/a
May
38.3 C (100.9 F)
4.4 C (39.9 F)
n/a
n/a
Jun
39.4 C (102.9 F)
12.2 C (54.0 F)
n/a
n/a
Jul
39.4 C (102.9 F)
16.1 C (61.0 F)
n/a
n/a
Aug
43.3 C (109.9 F)
16.1 C (61.0 F)
n/a
n/a
Sep
38.9 C (102.0 F)
6.1 C (43.0 F)
n/a
n/a
Oct
36.7 C (98.1 F)
-0.6 C (30.9 F)
n/a
n/a
Nov
31.7 C (89.1 F)
-5.6 C (21.9 F)
n/a
n/a
Dec
31.1 C (88.0 F)
-10.0 C (14.0 F)
n/a
n/a
Which Years Hold Standing Records
1,464 standing records
Year with most
1,464 records at Baton Rouge still stand. 1921 holds the most, with 69.
Standing records at Baton Rouge by the year they were set
Year set
Standing records
1892
4
1893
24
1894
28
1895
25
1896
24
1897
29
1898
29
1899
31
1900
16
1901
25
1902
15
1903
28
1904
30
1905
27
1906
22
1907
56
1908
58
1909
68
1910
25
1911
43
1912
22
1913
30
1914
28
1915
24
1916
22
1917
36
1918
21
1919
21
1920
25
1921
69
1922
35
1923
12
1924
28
1925
26
1926
11
1927
25
1928
23
1929
28
1930
18
1931
22
1932
35
1933
26
1934
20
1935
20
1936
21
1937
24
1938
19
1939
15
1940
38
1941
16
1942
15
1943
25
1944
18
1945
16
1946
17
1947
6
Wettest Day of Each Month
Dec: 223.0 mm (8.8 in)
The wettest day on record for each calendar month at Baton Rouge. The most was 223.0 mm (8.8 in) on 7 December 1912.
Record daily precipitation for each month at Baton Rouge
Month
Record daily precipitation (mm)
Date
Jan
125.2 mm (4.9 in)
9 January 1900
Feb
129.5 mm (5.1 in)
12 February 1905
Mar
185.2 mm (7.3 in)
13 March 1947
Apr
161.5 mm (6.4 in)
8 April 1942
May
205.7 mm (8.1 in)
8 May 1907
Jun
203.2 mm (8.0 in)
5 June 1928
Jul
160.8 mm (6.3 in)
15 July 1914
Aug
190.5 mm (7.5 in)
26 August 1926
Sep
127.0 mm (5.0 in)
21 September 1909
Oct
131.8 mm (5.2 in)
28 October 1896
Nov
182.9 mm (7.2 in)
13 November 1929
Dec
223.0 mm (8.8 in)
7 December 1912
Period of Record Coverage
1892 to 1947
Complete yearUnder 90 percent of days
56 years of record at Baton Rouge, 1892 to 1947. 4 years have data for under 90 percent of days and are left out of rankings: 1892, 1893, 1922, 1947.
Cooler than the station meanWarmer than the station mean
One stripe for each of 42 complete years at Baton Rouge, 1894 to 1946. Blue stripes are years cooler than the station's own mean of 20.1 C (68.1 F); red stripes are warmer. The coolest year was 1903, at 18.9 C (66.0 F), and the warmest was 1921, at 22.2 C (71.9 F). The strongest colour marks a difference of 2.2 C (4.0 F).
Annual mean temperature at Baton Rouge as warming stripes, 1894 to 1946
Year
Annual mean temperature
Difference from the station mean
1894
19.9 C
-0.16 C
1895
19.2 C
-0.86 C
1896
20.2 C
+0.13 C
1897
20.4 C
+0.32 C
1898
19.6 C
-0.47 C
1899
19.6 C
-0.45 C
1900
20.0 C
-0.06 C
1901
19.0 C
-1.06 C
1902
19.5 C
-0.62 C
1903
18.9 C
-1.19 C
1904
20.1 C
+0.03 C
1907
20.1 C
+0.00 C
1908
19.3 C
-0.81 C
1909
19.6 C
-0.50 C
1911
21.5 C
+1.40 C
1912
19.5 C
-0.55 C
1913
20.2 C
+0.08 C
1914
19.8 C
-0.24 C
1915
20.0 C
-0.04 C
1920
20.2 C
+0.15 C
1921
22.2 C
+2.11 C
1923
20.4 C
+0.27 C
1924
20.3 C
+0.18 C
1925
21.1 C
+0.98 C
1927
21.4 C
+1.29 C
1928
19.7 C
-0.41 C
1929
19.8 C
-0.33 C
1931
20.4 C
+0.27 C
1932
20.2 C
+0.08 C
1933
21.1 C
+0.98 C
1934
20.0 C
-0.11 C
1936
19.7 C
-0.39 C
1937
19.8 C
-0.25 C
1938
20.4 C
+0.27 C
1939
20.4 C
+0.31 C
1940
18.9 C
-1.18 C
1941
20.2 C
+0.09 C
1942
19.8 C
-0.25 C
1943
20.0 C
-0.07 C
1944
20.3 C
+0.22 C
1945
20.5 C
+0.42 C
1946
20.5 C
+0.41 C
The fitted trend in annual mean temperature here over 1894 to 1946 is 0.10 C (-0.02 to 0.23) per decade. The interval includes zero, so the trend is not clearly different from zero. In Fahrenheit: 0.19 F (-0.03 to 0.41) per decade. The slope is a straight line fitted to 42 complete years; the brackets give its 95 percent interval.
Fitted temperature trends per decade at Baton Rouge
Measure
Per decade (C)
Per decade (F)
Period
Complete years
Reading
Annual mean temperature
0.10 C (-0.02 to 0.23) per decade
0.19 F (-0.03 to 0.41) per decade
1894 to 1946
42
Not clearly different from zero
Mean daily maximum
-0.04 C (-0.19 to 0.10) per decade
-0.1 F (-0.3 to 0.2) per decade
1894 to 1946
42
Not clearly different from zero
Mean daily minimum
0.3 C (0.1 to 0.4) per decade
0.5 F (0.1 to 0.8) per decade
1894 to 1946
42
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
1892 to 1978
Yearly extremes at Baton Rouge: the record and the median year
Measure
Record
Year of the record
Median year
Years with a value
Hottest day (TXx)
43.3 C (109.9 F)
1909
37.0 C (98.5 F)
56
Coldest night (TNn)
-16.7 C (1.9 F)
1899
-5.8 C (21.5 F)
56
Wettest day (Rx1day)
223.0 mm (8.8 in)
1912
83.8 mm (3.3 in)
63
Wettest five days (Rx5day)
364.7 mm (14.4 in)
1908
127.1 mm (5.0 in)
61
Longest dry spell (CDD)
48 days
1924
21 days
62
Hottest day (TXx)
The hottest day of the year at Baton Rouge, 1892 to 1978. The record is 43.3 C (109.9 F) in 1909, marked on the chart; the median year is 37.0 C (98.5 F).
Hottest day (TXx) at Baton Rouge by year
Year
Hottest day (TXx)
1892
36.1 C (97.0 F)
1893
34.4 C (93.9 F)
1894
37.8 C (100.0 F)
1895
36.7 C (98.1 F)
1896
36.7 C (98.1 F)
1897
37.2 C (99.0 F)
1898
36.1 C (97.0 F)
1899
37.2 C (99.0 F)
1900
36.7 C (98.1 F)
1901
39.4 C (102.9 F)
1902
37.2 C (99.0 F)
1903
35.0 C (95.0 F)
1904
36.7 C (98.1 F)
1905
37.8 C (100.0 F)
1906
37.2 C (99.0 F)
1907
38.3 C (100.9 F)
1908
37.2 C (99.0 F)
1909
43.3 C (109.9 F)
1910
36.1 C (97.0 F)
1911
37.2 C (99.0 F)
1912
37.2 C (99.0 F)
1913
36.1 C (97.0 F)
1914
39.4 C (102.9 F)
1915
36.7 C (98.1 F)
1916
36.1 C (97.0 F)
1917
36.7 C (98.1 F)
1918
37.8 C (100.0 F)
1919
37.8 C (100.0 F)
1920
37.2 C (99.0 F)
1921
39.4 C (102.9 F)
1922
38.3 C (100.9 F)
1923
35.6 C (96.1 F)
1924
38.9 C (102.0 F)
1925
37.8 C (100.0 F)
1926
37.2 C (99.0 F)
1927
36.7 C (98.1 F)
1928
36.7 C (98.1 F)
1929
35.0 C (95.0 F)
1930
37.8 C (100.0 F)
1931
37.8 C (100.0 F)
1932
37.2 C (99.0 F)
1933
38.3 C (100.9 F)
1934
36.1 C (97.0 F)
1935
37.2 C (99.0 F)
1936
36.7 C (98.1 F)
1937
35.6 C (96.1 F)
1938
37.2 C (99.0 F)
1939
36.7 C (98.1 F)
1940
35.6 C (96.1 F)
1941
36.7 C (98.1 F)
1942
36.1 C (97.0 F)
1943
37.8 C (100.0 F)
1944
36.1 C (97.0 F)
1945
35.6 C (96.1 F)
1946
36.1 C (97.0 F)
1947
32.2 C (90.0 F)
1955
n/a
1956
n/a
1958
n/a
1975
n/a
1976
n/a
1977
n/a
1978
n/a
Coldest night (TNn)
The coldest night of the year at Baton Rouge, 1892 to 1978. The record is -16.7 C (1.9 F) in 1899, marked on the chart; the median year is -5.8 C (21.5 F).
Coldest night (TNn) at Baton Rouge by year
Year
Coldest night (TNn)
1892
2.2 C (36.0 F)
1893
-3.9 C (25.0 F)
1894
-10.0 C (14.0 F)
1895
-11.7 C (10.9 F)
1896
-6.7 C (19.9 F)
1897
-6.7 C (19.9 F)
1898
-5.6 C (21.9 F)
1899
-16.7 C (1.9 F)
1900
-6.7 C (19.9 F)
1901
-8.9 C (16.0 F)
1902
-4.4 C (24.1 F)
1903
-5.6 C (21.9 F)
1904
-7.8 C (18.0 F)
1905
-9.4 C (15.1 F)
1906
-5.0 C (23.0 F)
1907
-5.0 C (23.0 F)
1908
-5.6 C (21.9 F)
1909
-7.2 C (19.0 F)
1910
-6.7 C (19.9 F)
1911
-6.1 C (21.0 F)
1912
-7.8 C (18.0 F)
1913
-2.2 C (28.0 F)
1914
-5.0 C (23.0 F)
1915
-3.3 C (26.1 F)
1916
-4.4 C (24.1 F)
1917
-10.0 C (14.0 F)
1918
-11.7 C (10.9 F)
1919
-7.2 C (19.0 F)
1920
-3.9 C (25.0 F)
1921
1.1 C (34.0 F)
1922
-1.1 C (30.0 F)
1923
-2.2 C (28.0 F)
1924
-9.4 C (15.1 F)
1925
-6.7 C (19.9 F)
1926
-1.7 C (28.9 F)
1927
-5.6 C (21.9 F)
1928
-7.8 C (18.0 F)
1929
-5.6 C (21.9 F)
1930
-8.3 C (17.1 F)
1931
-1.7 C (28.9 F)
1932
-5.0 C (23.0 F)
1933
-8.3 C (17.1 F)
1934
-7.2 C (19.0 F)
1935
-7.2 C (19.0 F)
1936
-6.7 C (19.9 F)
1937
-5.6 C (21.9 F)
1938
-5.0 C (23.0 F)
1939
-3.9 C (25.0 F)
1940
-9.4 C (15.1 F)
1941
-3.9 C (25.0 F)
1942
-7.2 C (19.0 F)
1943
-6.7 C (19.9 F)
1944
-5.0 C (23.0 F)
1945
-6.7 C (19.9 F)
1946
-5.0 C (23.0 F)
1947
-5.6 C (21.9 F)
1955
n/a
1956
n/a
1958
n/a
1975
n/a
1976
n/a
1977
n/a
1978
n/a
Wettest day (Rx1day)
The wettest day of the year at Baton Rouge, 1892 to 1978. The record is 223.0 mm (8.8 in) in 1912, marked on the chart; the median year is 83.8 mm (3.3 in).
Wettest day (Rx1day) at Baton Rouge by year
Year
Wettest day (Rx1day)
1892
60.5 mm (2.4 in)
1893
118.6 mm (4.7 in)
1894
76.2 mm (3.0 in)
1895
83.8 mm (3.3 in)
1896
131.8 mm (5.2 in)
1897
108.0 mm (4.3 in)
1898
102.6 mm (4.0 in)
1899
39.9 mm (1.6 in)
1900
125.2 mm (4.9 in)
1901
63.5 mm (2.5 in)
1902
62.5 mm (2.5 in)
1903
78.7 mm (3.1 in)
1904
83.8 mm (3.3 in)
1905
129.5 mm (5.1 in)
1906
69.9 mm (2.8 in)
1907
205.7 mm (8.1 in)
1908
167.6 mm (6.6 in)
1909
127.0 mm (5.0 in)
1910
63.5 mm (2.5 in)
1911
88.9 mm (3.5 in)
1912
223.0 mm (8.8 in)
1913
109.2 mm (4.3 in)
1914
160.8 mm (6.3 in)
1915
102.9 mm (4.1 in)
1916
126.5 mm (5.0 in)
1917
58.4 mm (2.3 in)
1918
70.1 mm (2.8 in)
1919
80.8 mm (3.2 in)
1920
61.7 mm (2.4 in)
1921
54.6 mm (2.1 in)
1922
50.8 mm (2.0 in)
1923
86.4 mm (3.4 in)
1924
86.9 mm (3.4 in)
1925
78.7 mm (3.1 in)
1926
190.5 mm (7.5 in)
1927
75.2 mm (3.0 in)
1928
203.2 mm (8.0 in)
1929
182.9 mm (7.2 in)
1930
91.4 mm (3.6 in)
1931
88.1 mm (3.5 in)
1932
76.2 mm (3.0 in)
1933
61.0 mm (2.4 in)
1934
99.1 mm (3.9 in)
1935
101.1 mm (4.0 in)
1936
62.0 mm (2.4 in)
1937
81.8 mm (3.2 in)
1938
58.4 mm (2.3 in)
1939
57.7 mm (2.3 in)
1940
94.0 mm (3.7 in)
1941
53.8 mm (2.1 in)
1942
161.5 mm (6.4 in)
1943
94.5 mm (3.7 in)
1944
87.6 mm (3.4 in)
1945
62.0 mm (2.4 in)
1946
79.8 mm (3.1 in)
1947
185.2 mm (7.3 in)
1955
35.3 mm (1.4 in)
1956
25.4 mm (1.0 in)
1958
0.0 mm (0.00 in)
1975
28.4 mm (1.1 in)
1976
89.9 mm (3.5 in)
1977
58.2 mm (2.3 in)
1978
95.3 mm (3.8 in)
Wettest five days (Rx5day)
The wettest five days of the year at Baton Rouge, 1892 to 1978. The record is 364.7 mm (14.4 in) in 1908, marked on the chart; the median year is 127.1 mm (5.0 in).
Wettest five days (Rx5day) at Baton Rouge by year
Year
Wettest five days (Rx5day)
1892
152.7 mm (6.0 in)
1893
165.9 mm (6.5 in)
1894
164.8 mm (6.5 in)
1895
95.2 mm (3.7 in)
1896
171.9 mm (6.8 in)
1897
177.1 mm (7.0 in)
1898
119.4 mm (4.7 in)
1899
94.5 mm (3.7 in)
1900
176.0 mm (6.9 in)
1901
107.0 mm (4.2 in)
1902
100.4 mm (4.0 in)
1903
126.5 mm (5.0 in)
1904
105.2 mm (4.1 in)
1905
202.5 mm (8.0 in)
1906
105.4 mm (4.1 in)
1907
266.7 mm (10.5 in)
1908
364.7 mm (14.4 in)
1909
130.8 mm (5.1 in)
1910
80.0 mm (3.1 in)
1911
231.2 mm (9.1 in)
1912
225.5 mm (8.9 in)
1913
161.5 mm (6.4 in)
1914
262.1 mm (10.3 in)
1915
177.8 mm (7.0 in)
1916
193.8 mm (7.6 in)
1917
97.9 mm (3.9 in)
1918
127.1 mm (5.0 in)
1919
126.0 mm (5.0 in)
1920
98.3 mm (3.9 in)
1921
81.3 mm (3.2 in)
1922
110.0 mm (4.3 in)
1923
134.4 mm (5.3 in)
1924
99.6 mm (3.9 in)
1925
173.9 mm (6.8 in)
1926
250.2 mm (9.9 in)
1927
108.7 mm (4.3 in)
1928
275.3 mm (10.8 in)
1929
286.1 mm (11.3 in)
1930
148.4 mm (5.8 in)
1931
107.3 mm (4.2 in)
1932
154.6 mm (6.1 in)
1933
79.8 mm (3.1 in)
1934
149.4 mm (5.9 in)
1935
136.2 mm (5.4 in)
1936
100.9 mm (4.0 in)
1937
95.8 mm (3.8 in)
1938
86.4 mm (3.4 in)
1939
121.5 mm (4.8 in)
1940
175.2 mm (6.9 in)
1941
86.8 mm (3.4 in)
1942
190.2 mm (7.5 in)
1943
193.6 mm (7.6 in)
1944
122.9 mm (4.8 in)
1945
116.8 mm (4.6 in)
1946
211.1 mm (8.3 in)
1947
213.4 mm (8.4 in)
1955
59.7 mm (2.4 in)
1956
41.7 mm (1.6 in)
1958
n/a
1975
40.6 mm (1.6 in)
1976
115.0 mm (4.5 in)
1977
n/a
1978
98.2 mm (3.9 in)
Longest dry spell (CDD)
The longest dry spell of the year at Baton Rouge, 1892 to 1978. The record is 48 days in 1924, marked on the chart; the median year is 21 days.
Longest dry spell (CDD) at Baton Rouge by year
Year
Longest dry spell (CDD)
1892
1 day
1893
21 days
1894
25 days
1895
19 days
1896
20 days
1897
22 days
1898
39 days
1899
30 days
1900
30 days
1901
24 days
1902
15 days
1903
32 days
1904
25 days
1905
19 days
1906
28 days
1907
19 days
1908
19 days
1909
29 days
1910
20 days
1911
26 days
1912
14 days
1913
19 days
1914
22 days
1915
26 days
1916
33 days
1917
33 days
1918
24 days
1919
13 days
1920
16 days
1921
24 days
1922
20 days
1923
22 days
1924
48 days
1925
18 days
1926
14 days
1927
21 days
1928
22 days
1929
20 days
1930
33 days
1931
21 days
1932
17 days
1933
24 days
1934
16 days
1935
23 days
1936
19 days
1937
23 days
1938
16 days
1939
16 days
1940
35 days
1941
18 days
1942
17 days
1943
23 days
1944
27 days
1945
28 days
1946
18 days
1947
31 days
1955
14 days
1956
18 days
1958
1 day
1975
13 days
1976
19 days
1977
n/a
1978
13 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
39 years with a frost
Across 39 years with a frost, the median last spring frost at Baton Rouge falls on 22 February and the median first autumn frost on 18 November, which leaves a median of 273 days between them.
Fitted over all years, the growing season changes by +1.9 days per decade at this station.
Frost dates and growing season at Baton Rouge
Measure
Median, all years
Earliest period
Recent period (1903 to 1946)
Recent against earliest
Fitted trend
Last spring frost
22 February
n/a
22 February
n/a
-0.1 days per decade
First autumn frost
18 November
n/a
19 November
n/a
+1.8 days per decade
Growing days
273 days
n/a
276 days
n/a
+1.9 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
48 years, 1894 to 1946
A day with at least 85.1 mm (3.4 in) of rain is expected about once in 2 years. A day with at least 293.7 mm (11.6 in) of rain is expected about once in 100 years.
Rainfall return levels at Baton Rouge: the daily rain expected about once in a given number of years
Expected about once in
A day with at least
Note
2 years
85.1 mm (3.4 in)
5 years
122.7 mm (4.8 in)
10 years
153.7 mm (6.1 in)
25 years
201.3 mm (7.9 in)
50 years
243.9 mm (9.6 in)
Longer than the 48 years of record
100 years
293.7 mm (11.6 in)
Longer than the 48 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, 48 years of values from 1894 to 1946.
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: 223.0 mm (8.8 in) in 1912; 205.7 mm (8.1 in) in 1907; 203.2 mm (8.0 in) in 1928.
Station Changes
No change in the annual mean temperature of this station was found against its neighbours.
Download the Data
Data for Baton Rouge standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Baton Rouge 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.