Record envelope, standing records and threshold days for Waterloo (USC00018686), Alabama, United States, with 55 years of record.
Key Facts for Waterloo
Waterloo (USC00018686) is a weather station in Alabama, United States at 34.92 latitude and -88.07 longitude, 140 m (459 ft) above sea level.
The station reports from 1922 to 1976, 55 years of record.
1,464 records set at Waterloo still stand.
Records are tracked for prcp: an element needs 30 years of data to be eligible.
Waterloo set a daily record precipitation of 76.7 mm (3.0 in) on 29 March 1975.
About the Station
Location: Alabama, United States, 34.92 latitude, -88.07 longitude.
Elevation: 140 m (459 ft).
Period of record: 1922 to 1976, 55 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 Waterloo. 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 Waterloo, with 2026 drawn through them
Month
Highest record high
Lowest record low
2026 highest maximum
2026 lowest minimum
Jan
25.0 C (77.0 F)
-22.2 C (-8.0 F)
n/a
n/a
Feb
27.8 C (82.0 F)
-20.6 C (-5.1 F)
n/a
n/a
Mar
31.1 C (88.0 F)
-12.2 C (10.0 F)
n/a
n/a
Apr
31.7 C (89.1 F)
-5.0 C (23.0 F)
n/a
n/a
May
35.0 C (95.0 F)
-1.1 C (30.0 F)
n/a
n/a
Jun
37.8 C (100.0 F)
3.3 C (37.9 F)
n/a
n/a
Jul
40.0 C (104.0 F)
7.8 C (46.0 F)
n/a
n/a
Aug
38.3 C (100.9 F)
3.9 C (39.0 F)
n/a
n/a
Sep
36.7 C (98.1 F)
-1.1 C (30.0 F)
n/a
n/a
Oct
32.8 C (91.0 F)
-7.2 C (19.0 F)
n/a
n/a
Nov
30.0 C (86.0 F)
-12.8 C (9.0 F)
n/a
n/a
Dec
25.0 C (77.0 F)
-21.1 C (-6.0 F)
n/a
n/a
Which Years Hold Standing Records
1,464 standing records
Year with most
1,464 records at Waterloo still stand. 1967 holds the most, with 117.
Standing records at Waterloo by the year they were set
Year set
Standing records
1957
56
1958
58
1959
76
1960
87
1961
98
1962
106
1963
99
1964
76
1965
48
1966
71
1967
117
1968
87
1969
80
1970
94
1971
79
1972
64
1973
43
1974
88
1975
27
1976
10
Wettest Day of Each Month
Nov: 113.5 mm (4.5 in)
The wettest day on record for each calendar month at Waterloo. The most was 113.5 mm (4.5 in) on 19 November 1948.
Record daily precipitation for each month at Waterloo
Month
Record daily precipitation (mm)
Date
Jan
94.0 mm (3.7 in)
3 January 1951
Feb
98.0 mm (3.9 in)
11 February 1953
Mar
108.0 mm (4.3 in)
13 March 1975
Apr
80.0 mm (3.1 in)
19 April 1940
May
66.8 mm (2.6 in)
1 May 1967
Jun
78.7 mm (3.1 in)
21 June 1963
Jul
91.9 mm (3.6 in)
5 July 1974
Aug
101.6 mm (4.0 in)
27 August 1944
Sep
108.2 mm (4.3 in)
4 September 1966
Oct
110.2 mm (4.3 in)
23 October 1971
Nov
113.5 mm (4.5 in)
19 November 1948
Dec
82.8 mm (3.3 in)
29 December 1942
Period of Record Coverage
1957 to 1976
Complete yearUnder 90 percent of days
20 years of record at Waterloo, 1957 to 1976. 8 years have data for under 90 percent of days and are left out of rankings: 1957, 1958, 1959, 1965, 1966, 1973, 1975, 1976.
Cooler than the station meanWarmer than the station mean
One stripe for each of 10 complete years at Waterloo, 1960 to 1974. Blue stripes are years cooler than the station's own mean of 15.2 C (59.3 F); red stripes are warmer. The coolest year was 1960, at 14.4 C (57.9 F), and the warmest was 1971, at 16.0 C (60.8 F). The strongest colour marks a difference of 0.9 C (1.6 F).
Annual mean temperature at Waterloo as warming stripes, 1960 to 1974
Year
Annual mean temperature
Difference from the station mean
1960
14.4 C
-0.81 C
1961
14.8 C
-0.43 C
1962
15.3 C
+0.15 C
1963
14.4 C
-0.78 C
1964
15.1 C
-0.07 C
1967
15.2 C
+0.00 C
1969
15.5 C
+0.29 C
1970
15.9 C
+0.73 C
1971
16.0 C
+0.81 C
1974
15.3 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
1922 to 1976
Yearly extremes at Waterloo: the record and the median year
Measure
Record
Year of the record
Median year
Years with a value
Hottest day (TXx)
40.0 C (104.0 F)
1969
36.1 C (97.0 F)
20
Coldest night (TNn)
-22.2 C (-8.0 F)
1963
-14.7 C (5.5 F)
20
Wettest day (Rx1day)
113.5 mm (4.5 in)
1948
74.7 mm (2.9 in)
39
Wettest five days (Rx5day)
231.8 mm (9.1 in)
1955
118.3 mm (4.7 in)
38
Longest dry spell (CDD)
37 days
1953
21 days
39
Hottest day (TXx)
The hottest day of the year at Waterloo, 1922 to 1976. The record is 40.0 C (104.0 F) in 1969, marked on the chart; the median year is 36.1 C (97.0 F).
Hottest day (TXx) at Waterloo by year
Year
Hottest day (TXx)
1922
n/a
1938
n/a
1939
n/a
1940
n/a
1941
n/a
1942
n/a
1943
n/a
1944
n/a
1945
n/a
1946
n/a
1947
n/a
1948
n/a
1949
n/a
1950
n/a
1951
n/a
1952
n/a
1953
n/a
1954
n/a
1955
n/a
1956
n/a
1957
36.1 C (97.0 F)
1958
36.7 C (98.1 F)
1959
35.6 C (96.1 F)
1960
37.2 C (99.0 F)
1961
34.4 C (93.9 F)
1962
37.8 C (100.0 F)
1963
36.7 C (98.1 F)
1964
38.3 C (100.9 F)
1965
31.7 C (89.1 F)
1966
37.2 C (99.0 F)
1967
35.0 C (95.0 F)
1968
38.3 C (100.9 F)
1969
40.0 C (104.0 F)
1970
37.8 C (100.0 F)
1971
36.1 C (97.0 F)
1972
35.0 C (95.0 F)
1973
36.1 C (97.0 F)
1974
35.6 C (96.1 F)
1975
29.4 C (84.9 F)
1976
35.6 C (96.1 F)
Coldest night (TNn)
The coldest night of the year at Waterloo, 1922 to 1976. The record is -22.2 C (-8.0 F) in 1963, marked on the chart; the median year is -14.7 C (5.5 F).
Coldest night (TNn) at Waterloo by year
Year
Coldest night (TNn)
1922
n/a
1938
n/a
1939
n/a
1940
n/a
1941
n/a
1942
n/a
1943
n/a
1944
n/a
1945
n/a
1946
n/a
1947
n/a
1948
n/a
1949
n/a
1950
n/a
1951
n/a
1952
n/a
1953
n/a
1954
n/a
1955
n/a
1956
n/a
1957
-13.9 C (7.0 F)
1958
-20.6 C (-5.1 F)
1959
-12.8 C (9.0 F)
1960
-15.0 C (5.0 F)
1961
-14.4 C (6.1 F)
1962
-21.1 C (-6.0 F)
1963
-22.2 C (-8.0 F)
1964
-14.4 C (6.1 F)
1965
-14.4 C (6.1 F)
1966
-20.6 C (-5.1 F)
1967
-15.6 C (3.9 F)
1968
-15.0 C (5.0 F)
1969
-12.2 C (10.0 F)
1970
-20.0 C (-4.0 F)
1971
-17.8 C (0.0 F)
1972
-17.2 C (1.0 F)
1973
-12.2 C (10.0 F)
1974
-10.6 C (12.9 F)
1975
-11.1 C (12.0 F)
1976
7.8 C (46.0 F)
Wettest day (Rx1day)
The wettest day of the year at Waterloo, 1922 to 1976. The record is 113.5 mm (4.5 in) in 1948, marked on the chart; the median year is 74.7 mm (2.9 in).
Wettest day (Rx1day) at Waterloo by year
Year
Wettest day (Rx1day)
1922
0.0 mm (0.00 in)
1938
69.9 mm (2.8 in)
1939
64.8 mm (2.6 in)
1940
104.6 mm (4.1 in)
1941
90.2 mm (3.6 in)
1942
82.8 mm (3.3 in)
1943
50.8 mm (2.0 in)
1944
101.6 mm (4.0 in)
1945
103.1 mm (4.1 in)
1946
62.0 mm (2.4 in)
1947
55.9 mm (2.2 in)
1948
113.5 mm (4.5 in)
1949
43.2 mm (1.7 in)
1950
91.4 mm (3.6 in)
1951
104.1 mm (4.1 in)
1952
66.8 mm (2.6 in)
1953
98.0 mm (3.9 in)
1954
66.0 mm (2.6 in)
1955
103.6 mm (4.1 in)
1956
80.3 mm (3.2 in)
1957
58.4 mm (2.3 in)
1958
51.1 mm (2.0 in)
1959
50.8 mm (2.0 in)
1960
61.2 mm (2.4 in)
1961
105.2 mm (4.1 in)
1962
66.0 mm (2.6 in)
1963
78.7 mm (3.1 in)
1964
60.5 mm (2.4 in)
1965
63.2 mm (2.5 in)
1966
108.2 mm (4.3 in)
1967
74.7 mm (2.9 in)
1968
58.4 mm (2.3 in)
1969
71.4 mm (2.8 in)
1970
62.0 mm (2.4 in)
1971
110.2 mm (4.3 in)
1972
87.4 mm (3.4 in)
1973
102.9 mm (4.1 in)
1974
93.5 mm (3.7 in)
1975
108.0 mm (4.3 in)
1976
n/a
Wettest five days (Rx5day)
The wettest five days of the year at Waterloo, 1922 to 1976. The record is 231.8 mm (9.1 in) in 1955, marked on the chart; the median year is 118.3 mm (4.7 in).
Wettest five days (Rx5day) at Waterloo by year
Year
Wettest five days (Rx5day)
1922
n/a
1938
97.6 mm (3.8 in)
1939
106.2 mm (4.2 in)
1940
150.1 mm (5.9 in)
1941
110.0 mm (4.3 in)
1942
70.9 mm (2.8 in)
1943
84.5 mm (3.3 in)
1944
189.7 mm (7.5 in)
1945
221.5 mm (8.7 in)
1946
155.5 mm (6.1 in)
1947
98.8 mm (3.9 in)
1948
158.0 mm (6.2 in)
1949
83.9 mm (3.3 in)
1950
132.8 mm (5.2 in)
1951
186.4 mm (7.3 in)
1952
90.4 mm (3.6 in)
1953
126.9 mm (5.0 in)
1954
129.0 mm (5.1 in)
1955
231.8 mm (9.1 in)
1956
162.1 mm (6.4 in)
1957
175.2 mm (6.9 in)
1958
76.8 mm (3.0 in)
1959
82.9 mm (3.3 in)
1960
110.7 mm (4.4 in)
1961
123.5 mm (4.9 in)
1962
109.3 mm (4.3 in)
1963
97.2 mm (3.8 in)
1964
94.6 mm (3.7 in)
1965
98.0 mm (3.9 in)
1966
154.9 mm (6.1 in)
1967
102.6 mm (4.0 in)
1968
89.2 mm (3.5 in)
1969
116.9 mm (4.6 in)
1970
112.5 mm (4.4 in)
1971
119.6 mm (4.7 in)
1972
121.0 mm (4.8 in)
1973
139.8 mm (5.5 in)
1974
145.1 mm (5.7 in)
1975
196.9 mm (7.8 in)
1976
n/a
Longest dry spell (CDD)
The longest dry spell of the year at Waterloo, 1922 to 1976. The record is 37 days in 1953, marked on the chart; the median year is 21 days.
Longest dry spell (CDD) at Waterloo by year
Year
Longest dry spell (CDD)
1922
1 day
1938
30 days
1939
28 days
1940
25 days
1941
27 days
1942
21 days
1943
23 days
1944
33 days
1945
15 days
1946
22 days
1947
19 days
1948
19 days
1949
23 days
1950
36 days
1951
32 days
1952
36 days
1953
37 days
1954
27 days
1955
37 days
1956
23 days
1957
18 days
1958
30 days
1959
18 days
1960
17 days
1961
30 days
1962
20 days
1963
37 days
1964
22 days
1965
15 days
1966
14 days
1967
18 days
1968
19 days
1969
20 days
1970
18 days
1971
17 days
1972
12 days
1973
14 days
1974
15 days
1975
10 days
1976
n/a
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.
Download the Data
Data for Waterloo standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Waterloo 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 2026-10-16 (16 October 2026). Records are computed by this site and are not official.