Record envelope, standing records and threshold days for Lincoln Lock 4 (USC00014845), Alabama, United States, with 54 years of record.
Key Facts for Lincoln Lock 4
Lincoln Lock 4 (USC00014845) is a weather station in Alabama, United States at 33.63 latitude and -86.18 longitude, 156 m (512 ft) above sea level.
The station reports from 1896 to 1949, 54 years of record.
1,464 records set at Lincoln Lock 4 still stand.
Records are tracked for tmax, tmin, prcp: an element needs 30 years of data to be eligible.
Lincoln Lock 4 set a monthly record low maximum temperature of 21.1 C (70.0 F) on 22 August 1949.
About the Station
Location: Alabama, United States, 33.63 latitude, -86.18 longitude.
Elevation: 156 m (512 ft).
Period of record: 1896 to 1949, 54 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 Lincoln Lock 4. 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 Lincoln Lock 4, with 2026 drawn through them
Month
Highest record high
Lowest record low
2026 highest maximum
2026 lowest minimum
Jan
26.1 C (79.0 F)
-20.6 C (-5.1 F)
n/a
n/a
Feb
27.8 C (82.0 F)
-22.8 C (-9.0 F)
n/a
n/a
Mar
32.2 C (90.0 F)
-11.7 C (10.9 F)
n/a
n/a
Apr
33.9 C (93.0 F)
-3.3 C (26.1 F)
n/a
n/a
May
37.2 C (99.0 F)
1.1 C (34.0 F)
n/a
n/a
Jun
41.1 C (106.0 F)
7.8 C (46.0 F)
n/a
n/a
Jul
42.8 C (109.0 F)
12.2 C (54.0 F)
n/a
n/a
Aug
40.6 C (105.1 F)
11.1 C (52.0 F)
n/a
n/a
Sep
41.7 C (107.1 F)
3.3 C (37.9 F)
n/a
n/a
Oct
36.1 C (97.0 F)
-3.3 C (26.1 F)
n/a
n/a
Nov
35.0 C (95.0 F)
-9.4 C (15.1 F)
n/a
n/a
Dec
26.1 C (79.0 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 Lincoln Lock 4 still stand. 1902 holds the most, with 89.
Standing records at Lincoln Lock 4 by the year they were set
Year set
Standing records
1897
34
1898
32
1899
51
1900
28
1901
49
1902
89
1903
28
1904
19
1905
18
1906
31
1907
25
1908
25
1909
17
1910
31
1911
53
1912
21
1913
22
1914
28
1915
26
1916
21
1917
42
1918
33
1919
34
1920
24
1921
24
1922
27
1923
28
1924
31
1925
49
1926
28
1927
43
1928
20
1929
29
1930
32
1931
24
1932
30
1933
28
1934
23
1935
24
1936
13
1937
34
1938
15
1939
8
1940
35
1941
10
1942
16
1943
22
1944
16
1945
10
1946
18
1947
22
1948
13
1949
11
Wettest Day of Each Month
Jan: 158.8 mm (6.3 in)
The wettest day on record for each calendar month at Lincoln Lock 4. The most was 158.8 mm (6.3 in) on 11 January 1901.
Record daily precipitation for each month at Lincoln Lock 4
Month
Record daily precipitation (mm)
Date
Jan
158.8 mm (6.3 in)
11 January 1901
Feb
116.1 mm (4.6 in)
4 February 1936
Mar
109.2 mm (4.3 in)
19 March 1906
Apr
108.0 mm (4.3 in)
8 April 1938
May
109.2 mm (4.3 in)
7 May 1915
Jun
77.5 mm (3.1 in)
19 June 1900
Jul
76.2 mm (3.0 in)
6 July 1916
Aug
101.6 mm (4.0 in)
13 August 1934
Sep
109.5 mm (4.3 in)
25 September 1929
Oct
121.9 mm (4.8 in)
29 October 1918
Nov
127.5 mm (5.0 in)
28 November 1948
Dec
141.0 mm (5.6 in)
28 December 1942
Period of Record Coverage
1896 to 1949
Complete yearUnder 90 percent of days
54 years of record at Lincoln Lock 4, 1896 to 1949. 3 years have data for under 90 percent of days and are left out of rankings: 1896, 1900, 1949.
Cooler than the station meanWarmer than the station mean
One stripe for each of 49 complete years at Lincoln Lock 4, 1897 to 1948. Blue stripes are years cooler than the station's own mean of 17.0 C (62.6 F); red stripes are warmer. The coolest year was 1901, at 15.2 C (59.3 F), and the warmest was 1921, at 18.4 C (65.0 F). The strongest colour marks a difference of 1.9 C (3.4 F).
Annual mean temperature at Lincoln Lock 4 as warming stripes, 1897 to 1948
Year
Annual mean temperature
Difference from the station mean
1897
16.8 C
-0.18 C
1898
16.2 C
-0.82 C
1899
16.0 C
-1.00 C
1901
15.2 C
-1.80 C
1902
17.2 C
+0.23 C
1903
16.0 C
-0.99 C
1904
16.4 C
-0.56 C
1905
16.7 C
-0.26 C
1906
16.9 C
-0.04 C
1907
17.0 C
+0.04 C
1908
17.5 C
+0.51 C
1909
17.2 C
+0.23 C
1910
16.6 C
-0.39 C
1911
18.2 C
+1.18 C
1913
17.2 C
+0.18 C
1914
16.8 C
-0.22 C
1915
17.0 C
+0.02 C
1916
17.2 C
+0.21 C
1917
16.2 C
-0.78 C
1918
17.4 C
+0.37 C
1919
17.5 C
+0.53 C
1920
16.5 C
-0.45 C
1921
18.4 C
+1.37 C
1922
18.1 C
+1.13 C
1923
17.4 C
+0.42 C
1924
16.3 C
-0.68 C
1925
17.9 C
+0.94 C
1926
16.9 C
-0.07 C
1927
18.2 C
+1.22 C
1928
16.5 C
-0.44 C
1929
17.2 C
+0.17 C
1930
17.0 C
+0.02 C
1931
17.3 C
+0.30 C
1932
17.6 C
+0.63 C
1933
18.1 C
+1.07 C
1935
17.2 C
+0.20 C
1936
17.2 C
+0.20 C
1937
16.8 C
-0.21 C
1938
17.4 C
+0.40 C
1939
17.1 C
+0.12 C
1940
15.5 C
-1.46 C
1941
16.9 C
-0.04 C
1942
16.4 C
-0.54 C
1943
16.7 C
-0.28 C
1944
16.8 C
-0.18 C
1945
17.1 C
+0.16 C
1946
17.2 C
+0.17 C
1947
16.6 C
-0.41 C
1948
16.8 C
-0.20 C
The fitted trend in annual mean temperature here over 1897 to 1948 is 0.1 C (-0.1 to 0.2) per decade. The interval includes zero, so the trend is not clearly different from zero. In Fahrenheit: 0.1 F (-0.1 to 0.4) per decade. The slope is a straight line fitted to 49 complete years; the brackets give its 95 percent interval.
Fitted temperature trends per decade at Lincoln Lock 4
Measure
Per decade (C)
Per decade (F)
Period
Complete years
Reading
Annual mean temperature
0.1 C (-0.1 to 0.2) per decade
0.1 F (-0.1 to 0.4) per decade
1897 to 1948
49
Not clearly different from zero
Mean daily maximum
0.04 C (-0.09 to 0.18) per decade
0.1 F (-0.2 to 0.3) per decade
1897 to 1948
49
Not clearly different from zero
Mean daily minimum
0.10 C (-0.04 to 0.24) per decade
0.2 F (-0.1 to 0.4) per decade
1897 to 1948
49
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
1896 to 1949
Yearly extremes at Lincoln Lock 4: 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)
1902
38.3 C (100.9 F)
54
Coldest night (TNn)
-22.8 C (-9.0 F)
1899
-10.6 C (12.9 F)
54
Wettest day (Rx1day)
158.8 mm (6.3 in)
1901
79.4 mm (3.1 in)
54
Wettest five days (Rx5day)
248.5 mm (9.8 in)
1916
128.8 mm (5.1 in)
54
Longest dry spell (CDD)
52 days
1924
21 days
54
Hottest day (TXx)
The hottest day of the year at Lincoln Lock 4, 1896 to 1949. The record is 42.8 C (109.0 F) in 1902, marked on the chart; the median year is 38.3 C (100.9 F).
Hottest day (TXx) at Lincoln Lock 4 by year
Year
Hottest day (TXx)
1896
18.9 C (66.0 F)
1897
39.4 C (102.9 F)
1898
37.8 C (100.0 F)
1899
38.9 C (102.0 F)
1900
36.7 C (98.1 F)
1901
40.0 C (104.0 F)
1902
42.8 C (109.0 F)
1903
38.9 C (102.0 F)
1904
36.7 C (98.1 F)
1905
37.2 C (99.0 F)
1906
36.7 C (98.1 F)
1907
38.3 C (100.9 F)
1908
40.0 C (104.0 F)
1909
38.3 C (100.9 F)
1910
36.1 C (97.0 F)
1911
38.9 C (102.0 F)
1912
36.1 C (97.0 F)
1913
38.3 C (100.9 F)
1914
41.1 C (106.0 F)
1915
39.4 C (102.9 F)
1916
36.1 C (97.0 F)
1917
38.3 C (100.9 F)
1918
37.8 C (100.0 F)
1919
36.7 C (98.1 F)
1920
36.1 C (97.0 F)
1921
39.4 C (102.9 F)
1922
37.8 C (100.0 F)
1923
36.7 C (98.1 F)
1924
40.0 C (104.0 F)
1925
41.7 C (107.1 F)
1926
39.4 C (102.9 F)
1927
38.9 C (102.0 F)
1928
36.7 C (98.1 F)
1929
37.2 C (99.0 F)
1930
42.2 C (108.0 F)
1931
40.0 C (104.0 F)
1932
37.8 C (100.0 F)
1933
40.0 C (104.0 F)
1934
38.9 C (102.0 F)
1935
38.9 C (102.0 F)
1936
38.9 C (102.0 F)
1937
36.7 C (98.1 F)
1938
38.3 C (100.9 F)
1939
37.8 C (100.0 F)
1940
36.7 C (98.1 F)
1941
36.1 C (97.0 F)
1942
36.1 C (97.0 F)
1943
38.3 C (100.9 F)
1944
38.9 C (102.0 F)
1945
37.2 C (99.0 F)
1946
36.1 C (97.0 F)
1947
39.4 C (102.9 F)
1948
37.2 C (99.0 F)
1949
36.7 C (98.1 F)
Coldest night (TNn)
The coldest night of the year at Lincoln Lock 4, 1896 to 1949. The record is -22.8 C (-9.0 F) in 1899, marked on the chart; the median year is -10.6 C (12.9 F).
Coldest night (TNn) at Lincoln Lock 4 by year
Year
Coldest night (TNn)
1896
-7.2 C (19.0 F)
1897
-13.3 C (8.1 F)
1898
-9.4 C (15.1 F)
1899
-22.8 C (-9.0 F)
1900
-11.7 C (10.9 F)
1901
-13.3 C (8.1 F)
1902
-10.0 C (14.0 F)
1903
-8.9 C (16.0 F)
1904
-9.4 C (15.1 F)
1905
-17.2 C (1.0 F)
1906
-7.8 C (18.0 F)
1907
-7.2 C (19.0 F)
1908
-8.9 C (16.0 F)
1909
-12.2 C (10.0 F)
1910
-9.4 C (15.1 F)
1911
-12.2 C (10.0 F)
1912
-12.2 C (10.0 F)
1913
-5.6 C (21.9 F)
1914
-10.6 C (12.9 F)
1915
-5.6 C (21.9 F)
1916
-10.0 C (14.0 F)
1917
-13.9 C (7.0 F)
1918
-18.3 C (-0.9 F)
1919
-15.6 C (3.9 F)
1920
-9.4 C (15.1 F)
1921
-3.3 C (26.1 F)
1922
-6.7 C (19.9 F)
1923
-8.9 C (16.0 F)
1924
-15.6 C (3.9 F)
1925
-13.9 C (7.0 F)
1926
-7.8 C (18.0 F)
1927
-12.2 C (10.0 F)
1928
-15.0 C (5.0 F)
1929
-12.8 C (9.0 F)
1930
-10.6 C (12.9 F)
1931
-8.3 C (17.1 F)
1932
-8.3 C (17.1 F)
1933
-13.3 C (8.1 F)
1934
-12.2 C (10.0 F)
1935
-11.1 C (12.0 F)
1936
-17.8 C (0.0 F)
1937
-10.6 C (12.9 F)
1938
-9.4 C (15.1 F)
1939
-7.2 C (19.0 F)
1940
-20.6 C (-5.1 F)
1941
-6.7 C (19.9 F)
1942
-13.3 C (8.1 F)
1943
-11.1 C (12.0 F)
1944
-8.3 C (17.1 F)
1945
-11.1 C (12.0 F)
1946
-8.9 C (16.0 F)
1947
-10.0 C (14.0 F)
1948
-11.1 C (12.0 F)
1949
-7.2 C (19.0 F)
Wettest day (Rx1day)
The wettest day of the year at Lincoln Lock 4, 1896 to 1949. The record is 158.8 mm (6.3 in) in 1901, marked on the chart; the median year is 79.4 mm (3.1 in).
Wettest day (Rx1day) at Lincoln Lock 4 by year
Year
Wettest day (Rx1day)
1896
14.7 mm (0.6 in)
1897
41.7 mm (1.6 in)
1898
86.4 mm (3.4 in)
1899
54.9 mm (2.2 in)
1900
91.4 mm (3.6 in)
1901
158.8 mm (6.3 in)
1902
73.7 mm (2.9 in)
1903
63.5 mm (2.5 in)
1904
55.9 mm (2.2 in)
1905
88.9 mm (3.5 in)
1906
109.2 mm (4.3 in)
1907
108.0 mm (4.3 in)
1908
76.5 mm (3.0 in)
1909
66.5 mm (2.6 in)
1910
50.8 mm (2.0 in)
1911
81.8 mm (3.2 in)
1912
68.6 mm (2.7 in)
1913
68.6 mm (2.7 in)
1914
58.4 mm (2.3 in)
1915
109.2 mm (4.3 in)
1916
76.2 mm (3.0 in)
1917
72.4 mm (2.9 in)
1918
121.9 mm (4.8 in)
1919
65.0 mm (2.6 in)
1920
101.6 mm (4.0 in)
1921
85.3 mm (3.4 in)
1922
101.6 mm (4.0 in)
1923
63.5 mm (2.5 in)
1924
103.1 mm (4.1 in)
1925
66.5 mm (2.6 in)
1926
83.8 mm (3.3 in)
1927
95.3 mm (3.8 in)
1928
62.2 mm (2.4 in)
1929
109.5 mm (4.3 in)
1930
101.6 mm (4.0 in)
1931
65.0 mm (2.6 in)
1932
93.7 mm (3.7 in)
1933
84.8 mm (3.3 in)
1934
111.8 mm (4.4 in)
1935
62.5 mm (2.5 in)
1936
116.1 mm (4.6 in)
1937
76.2 mm (3.0 in)
1938
108.0 mm (4.3 in)
1939
58.4 mm (2.3 in)
1940
66.5 mm (2.6 in)
1941
101.1 mm (4.0 in)
1942
141.0 mm (5.6 in)
1943
74.2 mm (2.9 in)
1944
62.2 mm (2.4 in)
1945
71.6 mm (2.8 in)
1946
77.0 mm (3.0 in)
1947
93.2 mm (3.7 in)
1948
127.5 mm (5.0 in)
1949
88.4 mm (3.5 in)
Wettest five days (Rx5day)
The wettest five days of the year at Lincoln Lock 4, 1896 to 1949. The record is 248.5 mm (9.8 in) in 1916, marked on the chart; the median year is 128.8 mm (5.1 in).
Wettest five days (Rx5day) at Lincoln Lock 4 by year
Year
Wettest five days (Rx5day)
1896
18.0 mm (0.7 in)
1897
89.9 mm (3.5 in)
1898
115.6 mm (4.6 in)
1899
104.5 mm (4.1 in)
1900
146.5 mm (5.8 in)
1901
190.0 mm (7.5 in)
1902
119.6 mm (4.7 in)
1903
175.7 mm (6.9 in)
1904
103.3 mm (4.1 in)
1905
112.3 mm (4.4 in)
1906
137.9 mm (5.4 in)
1907
144.1 mm (5.7 in)
1908
121.4 mm (4.8 in)
1909
202.4 mm (8.0 in)
1910
87.4 mm (3.4 in)
1911
119.2 mm (4.7 in)
1912
111.8 mm (4.4 in)
1913
104.2 mm (4.1 in)
1914
79.5 mm (3.1 in)
1915
128.3 mm (5.1 in)
1916
248.5 mm (9.8 in)
1917
120.7 mm (4.8 in)
1918
165.1 mm (6.5 in)
1919
132.0 mm (5.2 in)
1920
130.8 mm (5.1 in)
1921
156.7 mm (6.2 in)
1922
128.0 mm (5.0 in)
1923
102.1 mm (4.0 in)
1924
69.8 mm (2.7 in)
1925
113.3 mm (4.5 in)
1926
120.7 mm (4.8 in)
1927
121.4 mm (4.8 in)
1928
138.7 mm (5.5 in)
1929
151.7 mm (6.0 in)
1930
152.4 mm (6.0 in)
1931
103.0 mm (4.1 in)
1932
161.3 mm (6.4 in)
1933
106.1 mm (4.2 in)
1934
150.9 mm (5.9 in)
1935
96.3 mm (3.8 in)
1936
154.9 mm (6.1 in)
1937
147.3 mm (5.8 in)
1938
158.3 mm (6.2 in)
1939
81.0 mm (3.2 in)
1940
121.5 mm (4.8 in)
1941
147.1 mm (5.8 in)
1942
164.4 mm (6.5 in)
1943
162.1 mm (6.4 in)
1944
129.3 mm (5.1 in)
1945
92.0 mm (3.6 in)
1946
173.0 mm (6.8 in)
1947
132.5 mm (5.2 in)
1948
197.9 mm (7.8 in)
1949
130.1 mm (5.1 in)
Longest dry spell (CDD)
The longest dry spell of the year at Lincoln Lock 4, 1896 to 1949. The record is 52 days in 1924, marked on the chart; the median year is 21 days.
Longest dry spell (CDD) at Lincoln Lock 4 by year
Year
Longest dry spell (CDD)
1896
13 days
1897
25 days
1898
15 days
1899
18 days
1900
19 days
1901
22 days
1902
25 days
1903
20 days
1904
26 days
1905
16 days
1906
19 days
1907
17 days
1908
26 days
1909
26 days
1910
21 days
1911
17 days
1912
19 days
1913
18 days
1914
21 days
1915
17 days
1916
20 days
1917
23 days
1918
27 days
1919
20 days
1920
45 days
1921
35 days
1922
30 days
1923
21 days
1924
52 days
1925
23 days
1926
20 days
1927
26 days
1928
26 days
1929
14 days
1930
37 days
1931
32 days
1932
16 days
1933
19 days
1934
19 days
1935
36 days
1936
22 days
1937
19 days
1938
23 days
1939
28 days
1940
17 days
1941
18 days
1942
24 days
1943
20 days
1944
27 days
1945
16 days
1946
21 days
1947
21 days
1948
21 days
1949
21 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
49 years with a frost
Across 49 years with a frost, the median last spring frost at Lincoln Lock 4 falls on 31 March and the median first autumn frost on 3 November, which leaves a median of 216 days between them.
Fitted over all years, the growing season changes by -0.5 days per decade at this station.
Frost dates and growing season at Lincoln Lock 4
Measure
Median, all years
Earliest period
Recent period (1918 to 1948)
Recent against earliest
Fitted trend
Last spring frost
31 March
n/a
1 April
n/a
+0.2 days per decade
First autumn frost
3 November
n/a
4 November
n/a
-0.3 days per decade
Growing days
216 days
n/a
220 days
n/a
-0.5 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
44 years, 1897 to 1948
A day with at least 80.2 mm (3.2 in) of rain is expected about once in 2 years. A day with at least 163.7 mm (6.4 in) of rain is expected about once in 100 years.
Rainfall return levels at Lincoln Lock 4: the daily rain expected about once in a given number of years
Expected about once in
A day with at least
Note
2 years
80.2 mm (3.2 in)
5 years
102.3 mm (4.0 in)
10 years
117.0 mm (4.6 in)
25 years
135.7 mm (5.3 in)
50 years
149.7 mm (5.9 in)
Longer than the 44 years of record
100 years
163.7 mm (6.4 in)
Longer than the 44 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, 44 years of values from 1897 to 1948.
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: 158.8 mm (6.3 in) in 1901; 141.0 mm (5.6 in) in 1942; 127.5 mm (5.0 in) in 1948.
Station Changes
1 suspected
One change was suspected in the annual mean temperature of Lincoln Lock 4, at 1938. Each is measured against neighbouring stations.
Relative to 5 neighbouring stations, the station's annual mean temperature from 1938 ran 0.2 C (0.4 F) lower than in the years before (likely change).
Suspected changes in the annual mean temperature at Lincoln Lock 4, against neighbouring stations
Year
Shift (C)
Shift (F)
Strength
Neighbours
1938
-0.2
-0.4
likely
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 Lincoln Lock 4 standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Lincoln Lock 4 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 2026-10-14 (14 October 2026). Records are computed by this site and are not official.