Mitchell Dam Weather Records (USC00015465)

Record envelope, standing records and threshold days for Mitchell Dam (USC00015465), Alabama, United States, with 57 years of record.

Key Facts for Mitchell Dam

Mitchell Dam (USC00015465) is a weather station in Alabama, United States at 32.80 latitude and -86.45 longitude, 107 m (350 ft) above sea level.
The station reports from 1937 to 1993, 57 years of record.
1,144 records set at Mitchell Dam still stand.
Records are tracked for prcp, snow, snwd: an element needs 30 years of data to be eligible.
Mitchell Dam set a daily record precipitation of 56.6 mm (2.2 in) on 21 January 1993.

About the Station

Location: Alabama, United States, 32.80 latitude, -86.45 longitude.
Elevation: 107 m (350 ft).
Period of record: 1937 to 1993, 57 years.
Eligible elements: prcp, snow, snwd.

Daily Record Envelope and 2026

0 days at or beyond a record

The band shows the record high and record low for each calendar day at Mitchell Dam. 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 Mitchell Dam, 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)	-11.7 C (10.9 F)	n/a	n/a
Feb	25.0 C (77.0 F)	-3.3 C (26.1 F)	n/a	n/a
Mar	30.6 C (87.1 F)	1.7 C (35.1 F)	n/a	n/a
Apr	-11.7 C (10.9 F)	n/a	n/a	n/a
May	30.6 C (87.1 F)	12.2 C (54.0 F)	n/a	n/a
Jun	34.4 C (93.9 F)	10.0 C (50.0 F)	n/a	n/a
Jul	36.7 C (98.1 F)	19.4 C (66.9 F)	n/a	n/a
Aug	37.8 C (100.0 F)	17.2 C (63.0 F)	n/a	n/a
Sep	35.6 C (96.1 F)	12.8 C (55.0 F)	n/a	n/a
Oct	n/a	n/a	n/a	n/a
Nov	27.2 C (81.0 F)	0.0 C (32.0 F)	n/a	n/a
Dec	23.9 C (75.0 F)	-3.3 C (26.1 F)	n/a	n/a

Which Years Hold Standing Records

1,144 standing records

1,144 records at Mitchell Dam still stand. 1972 holds the most, with 684.

Wettest Day of Each Month

Jun: 212.3 mm (8.4 in)

The wettest day on record for each calendar month at Mitchell Dam. The most was 212.3 mm (8.4 in) on 23 June 1963.

Record daily precipitation for each month at Mitchell Dam
Month	Record daily precipitation (mm)	Date
Jan	110.7 mm (4.4 in)	11 January 1972
Feb	119.1 mm (4.7 in)	2 February 1982
Mar	163.8 mm (6.4 in)	29 March 1951
Apr	144.5 mm (5.7 in)	3 April 1975
May	70.1 mm (2.8 in)	18 May 1986
Jun	212.3 mm (8.4 in)	23 June 1963
Jul	102.4 mm (4.0 in)	10 July 1948
Aug	152.4 mm (6.0 in)	16 August 1939
Sep	154.2 mm (6.1 in)	28 September 1979
Oct	80.8 mm (3.2 in)	12 October 1983
Nov	98.6 mm (3.9 in)	27 November 1948
Dec	139.7 mm (5.5 in)	10 December 1961

Period of Record Coverage

1950 to 1972

7 years of record at Mitchell Dam, 1950 to 1972. 7 years have data for under 90 percent of days and are left out of rankings: 1950, 1955, 1962, 1967, 1968, 1971, 1972.

Latest Records

Latest records at Mitchell Dam
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
21 January 1993	Mitchell Dam, US	daily rain	56.6 mm (2.2 in)	11.6 mm (0.5 in)	3 years	12 of 100 (Routine)
17 December 1992	Mitchell Dam, US	daily rain	70.6 mm (2.8 in)	50.8 mm (2.0 in)	17 years	42 of 100 (Notable)
24 November 1992	Mitchell Dam, US	daily rain	48.3 mm (1.9 in)	11.2 mm (0.4 in)	44 years	25 of 100 (Routine)
5 November 1992	Mitchell Dam, US	daily rain	46.5 mm (1.8 in)	28.2 mm (1.1 in)	18 years	28 of 100 (Routine)
2 November 1992	Mitchell Dam, US	daily rain	64.0 mm (2.5 in)	38.3 mm (1.5 in)	8 years	32 of 100 (Routine)
4 October 1992	Mitchell Dam, US	daily rain	41.9 mm (1.6 in)	21.1 mm (0.8 in)	55 years	35 of 100 (Notable)
14 August 1992	Mitchell Dam, US	daily rain	92.7 mm (3.6 in)	46.7 mm (1.8 in)	53 years	49 of 100 (Notable)
22 November 1991	Mitchell Dam, US	daily rain	56.6 mm (2.2 in)	14.9 mm (0.6 in)	42 years	26 of 100 (Routine)
21 November 1991	Mitchell Dam, US	daily rain	37.1 mm (1.5 in)	9.2 mm (0.36 in)	17 years	16 of 100 (Routine)
25 September 1991	Mitchell Dam, US	daily rain	54.6 mm (2.1 in)	17.8 mm (0.7 in)	34 years	24 of 100 (Routine)
26 June 1991	Mitchell Dam, US	daily rain	186.2 mm (7.3 in)	157.5 mm (6.2 in)	53 years	61 of 100 (Major)
6 May 1991	Mitchell Dam, US	daily rain	51.6 mm (2.0 in)	18.3 mm (0.7 in)	52 years	33 of 100 (Routine)
23 February 1991	Mitchell Dam, US	daily rain	24.6 mm (1.0 in)	0.7 mm (0.03 in)	16 years	9 of 100 (Routine)
31 January 1991	Mitchell Dam, US	daily rain	28.7 mm (1.1 in)	2.8 mm (0.11 in)	48 years	20 of 100 (Routine)
30 January 1991	Mitchell Dam, US	daily rain	48.0 mm (1.9 in)	19.3 mm (0.8 in)	19 years	22 of 100 (Routine)
23 October 1990	Mitchell Dam, US	daily rain	36.1 mm (1.4 in)	5.6 mm (0.22 in)	24 years	15 of 100 (Routine)
17 June 1990	Mitchell Dam, US	daily rain	34.0 mm (1.3 in)	19.3 mm (0.8 in)	48 years	30 of 100 (Routine)
21 May 1990	Mitchell Dam, US	daily rain	36.8 mm (1.4 in)	21.1 mm (0.8 in)	7 years	22 of 100 (Routine)
16 March 1990	Mitchell Dam, US	daily rain	136.7 mm (5.4 in)	41.2 mm (1.6 in)	33 years	36 of 100 (Notable)
16 February 1990	Mitchell Dam, US	daily rain (Tie)	40.6 mm (1.6 in)	tie	40 years	4 of 100 (Routine)

Extremes by Year

1937 to 1993

Yearly extremes at Mitchell Dam: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Hottest day (TXx)	37.8 C (100.0 F)	1968	32.8 C (91.0 F)	7
Coldest night (TNn)	-11.7 C (10.9 F)	1972	8.7 C (47.6 F)	6
Wettest day (Rx1day)	212.3 mm (8.4 in)	1963	88.6 mm (3.5 in)	57
Wettest five days (Rx5day)	375.4 mm (14.8 in)	1939	137.7 mm (5.4 in)	57
Longest dry spell (CDD)	39 days	1978	22 days	57

Hottest day (TXx)

The hottest day of the year at Mitchell Dam, 1937 to 1993. The record is 37.8 C (100.0 F) in 1968, marked on the chart; the median year is 32.8 C (91.0 F).

Hottest day (TXx) at Mitchell Dam by year
Year	Hottest day (TXx)
1937	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	32.8 C (91.0 F)
1951	n/a
1952	n/a
1953	n/a
1954	n/a
1955	36.7 C (98.1 F)
1956	n/a
1957	n/a
1958	n/a
1959	n/a
1960	n/a
1961	n/a
1962	-11.7 C (10.9 F)
1963	n/a
1964	n/a
1965	n/a
1966	n/a
1967	30.6 C (87.1 F)
1968	37.8 C (100.0 F)
1969	n/a
1970	n/a
1971	25.0 C (77.0 F)
1972	35.6 C (96.1 F)
1973	n/a
1974	n/a
1975	n/a
1976	n/a
1977	n/a
1978	n/a
1979	n/a
1980	n/a
1981	n/a
1982	n/a
1983	n/a
1984	n/a
1985	n/a
1986	n/a
1987	n/a
1988	n/a
1989	n/a
1990	n/a
1991	n/a
1992	n/a
1993	n/a

Coldest night (TNn)

The coldest night of the year at Mitchell Dam, 1937 to 1993. The record is -11.7 C (10.9 F) in 1972, marked on the chart; the median year is 8.7 C (47.6 F).

Coldest night (TNn) at Mitchell Dam by year
Year	Coldest night (TNn)
1937	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	15.6 C (60.1 F)
1951	n/a
1952	n/a
1953	n/a
1954	n/a
1955	19.4 C (66.9 F)
1956	n/a
1957	n/a
1958	n/a
1959	n/a
1960	n/a
1961	n/a
1962	n/a
1963	n/a
1964	n/a
1965	n/a
1966	n/a
1967	1.7 C (35.1 F)
1968	17.2 C (63.0 F)
1969	n/a
1970	n/a
1971	-5.0 C (23.0 F)
1972	-11.7 C (10.9 F)
1973	n/a
1974	n/a
1975	n/a
1976	n/a
1977	n/a
1978	n/a
1979	n/a
1980	n/a
1981	n/a
1982	n/a
1983	n/a
1984	n/a
1985	n/a
1986	n/a
1987	n/a
1988	n/a
1989	n/a
1990	n/a
1991	n/a
1992	n/a
1993	n/a

Wettest day (Rx1day)

The wettest day of the year at Mitchell Dam, 1937 to 1993. The record is 212.3 mm (8.4 in) in 1963, marked on the chart; the median year is 88.6 mm (3.5 in).

Wettest day (Rx1day) at Mitchell Dam by year
Year	Wettest day (Rx1day)
1937	93.5 mm (3.7 in)
1938	118.9 mm (4.7 in)
1939	152.4 mm (6.0 in)
1940	99.6 mm (3.9 in)
1941	75.4 mm (3.0 in)
1942	132.3 mm (5.2 in)
1943	101.3 mm (4.0 in)
1944	62.2 mm (2.4 in)
1945	114.3 mm (4.5 in)
1946	106.2 mm (4.2 in)
1947	78.0 mm (3.1 in)
1948	102.4 mm (4.0 in)
1949	100.8 mm (4.0 in)
1950	68.1 mm (2.7 in)
1951	163.8 mm (6.4 in)
1952	69.9 mm (2.8 in)
1953	76.5 mm (3.0 in)
1954	48.8 mm (1.9 in)
1955	83.1 mm (3.3 in)
1956	95.5 mm (3.8 in)
1957	105.4 mm (4.1 in)
1958	79.8 mm (3.1 in)
1959	68.8 mm (2.7 in)
1960	64.8 mm (2.6 in)
1961	139.7 mm (5.5 in)
1962	111.0 mm (4.4 in)
1963	212.3 mm (8.4 in)
1964	113.0 mm (4.4 in)
1965	69.9 mm (2.8 in)
1966	88.6 mm (3.5 in)
1967	76.5 mm (3.0 in)
1968	75.7 mm (3.0 in)
1969	91.9 mm (3.6 in)
1970	67.1 mm (2.6 in)
1971	88.6 mm (3.5 in)
1972	110.7 mm (4.4 in)
1973	94.5 mm (3.7 in)
1974	72.6 mm (2.9 in)
1975	144.5 mm (5.7 in)
1976	67.8 mm (2.7 in)
1977	84.8 mm (3.3 in)
1978	54.4 mm (2.1 in)
1979	154.2 mm (6.1 in)
1980	66.5 mm (2.6 in)
1981	102.1 mm (4.0 in)
1982	119.1 mm (4.7 in)
1983	98.0 mm (3.9 in)
1984	53.6 mm (2.1 in)
1985	69.9 mm (2.8 in)
1986	82.8 mm (3.3 in)
1987	48.5 mm (1.9 in)
1988	78.7 mm (3.1 in)
1989	76.2 mm (3.0 in)
1990	136.7 mm (5.4 in)
1991	186.2 mm (7.3 in)
1992	92.7 mm (3.6 in)
1993	56.6 mm (2.2 in)

Wettest five days (Rx5day)

The wettest five days of the year at Mitchell Dam, 1937 to 1993. The record is 375.4 mm (14.8 in) in 1939, marked on the chart; the median year is 137.7 mm (5.4 in).

Wettest five days (Rx5day) at Mitchell Dam by year
Year	Wettest five days (Rx5day)
1937	134.1 mm (5.3 in)
1938	204.2 mm (8.0 in)
1939	375.4 mm (14.8 in)
1940	163.9 mm (6.5 in)
1941	169.3 mm (6.7 in)
1942	184.6 mm (7.3 in)
1943	123.9 mm (4.9 in)
1944	109.9 mm (4.3 in)
1945	156.4 mm (6.2 in)
1946	207.6 mm (8.2 in)
1947	165.4 mm (6.5 in)
1948	167.7 mm (6.6 in)
1949	107.8 mm (4.2 in)
1950	151.2 mm (6.0 in)
1951	175.5 mm (6.9 in)
1952	111.8 mm (4.4 in)
1953	110.0 mm (4.3 in)
1954	51.6 mm (2.0 in)
1955	175.5 mm (6.9 in)
1956	149.8 mm (5.9 in)
1957	244.3 mm (9.6 in)
1958	86.2 mm (3.4 in)
1959	91.8 mm (3.6 in)
1960	108.8 mm (4.3 in)
1961	234.0 mm (9.2 in)
1962	112.3 mm (4.4 in)
1963	314.6 mm (12.4 in)
1964	220.0 mm (8.7 in)
1965	83.3 mm (3.3 in)
1966	161.8 mm (6.4 in)
1967	125.5 mm (4.9 in)
1968	82.6 mm (3.3 in)
1969	108.2 mm (4.3 in)
1970	145.0 mm (5.7 in)
1971	164.5 mm (6.5 in)
1972	194.0 mm (7.6 in)
1973	118.6 mm (4.7 in)
1974	101.4 mm (4.0 in)
1975	175.0 mm (6.9 in)
1976	149.6 mm (5.9 in)
1977	103.5 mm (4.1 in)
1978	88.1 mm (3.5 in)
1979	191.3 mm (7.5 in)
1980	102.9 mm (4.1 in)
1981	112.2 mm (4.4 in)
1982	135.1 mm (5.3 in)
1983	143.2 mm (5.6 in)
1984	117.6 mm (4.6 in)
1985	94.0 mm (3.7 in)
1986	140.8 mm (5.5 in)
1987	98.8 mm (3.9 in)
1988	121.4 mm (4.8 in)
1989	124.0 mm (4.9 in)
1990	197.4 mm (7.8 in)
1991	246.7 mm (9.7 in)
1992	137.7 mm (5.4 in)
1993	89.6 mm (3.5 in)

Longest dry spell (CDD)

The longest dry spell of the year at Mitchell Dam, 1937 to 1993. The record is 39 days in 1978, marked on the chart; the median year is 22 days.

Longest dry spell (CDD) at Mitchell Dam by year
Year	Longest dry spell (CDD)
1937	20 days
1938	21 days
1939	29 days
1940	33 days
1941	36 days
1942	27 days
1943	21 days
1944	33 days
1945	23 days
1946	26 days
1947	17 days
1948	22 days
1949	23 days
1950	19 days
1951	22 days
1952	31 days
1953	20 days
1954	38 days
1955	22 days
1956	19 days
1957	20 days
1958	26 days
1959	14 days
1960	21 days
1961	31 days
1962	27 days
1963	33 days
1964	34 days
1965	25 days
1966	18 days
1967	19 days
1968	20 days
1969	17 days
1970	28 days
1971	20 days
1972	13 days
1973	20 days
1974	25 days
1975	19 days
1976	21 days
1977	28 days
1978	39 days
1979	16 days
1980	25 days
1981	21 days
1982	19 days
1983	22 days
1984	34 days
1985	20 days
1986	31 days
1987	37 days
1988	34 days
1989	19 days
1990	19 days
1991	17 days
1992	16 days
1993	6 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.

Rainfall Return Levels

54 years, 1937 to 1992

A day with at least 89.3 mm (3.5 in) of rain is expected about once in 2 years. A day with at least 220.5 mm (8.7 in) of rain is expected about once in 100 years.

Rainfall return levels at Mitchell Dam: the daily rain expected about once in a given number of years
Expected about once in	A day with at least	Note
2 years	89.3 mm (3.5 in)
5 years	119.2 mm (4.7 in)
10 years	140.9 mm (5.5 in)
25 years	170.8 mm (6.7 in)
50 years	194.9 mm (7.7 in)
100 years	220.5 mm (8.7 in)	Longer than the 54 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, 54 years of values from 1937 to 1992.

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: 212.3 mm (8.4 in) in 1963; 186.2 mm (7.3 in) in 1991; 163.8 mm (6.4 in) in 1951.

Download the Data

Data for Mitchell Dam standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Mitchell Dam 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.

Data as of 2025-12-31. Last revised 31 December 2025 (2025-12-31).