Record envelope, standing records and threshold days for Dayton 1 N (USC00012188), Alabama, United States, with 43 years of record.
Key Facts for Dayton 1 N
Dayton 1 N (USC00012188) is a weather station in Alabama, United States at 32.37 latitude and -87.65 longitude, 70 m (230 ft) above sea level.
The station reports from 1940 to 1982, 43 years of record.
1,464 records set at Dayton 1 N still stand.
Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
Dayton 1 N set a daily record high minimum temperature of 19.4 C (66.9 F) on 21 March 1982.
About the Station
Location: Alabama, United States, 32.37 latitude, -87.65 longitude.
Elevation: 70 m (230 ft).
Period of record: 1940 to 1982, 43 years.
Eligible elements: tmax, tmin, prcp, snow, snwd.
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 Dayton 1 N. 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 Dayton 1 N, with 2026 drawn through them
Month
Highest record high
Lowest record low
2026 highest maximum
2026 lowest minimum
Jan
28.3 C (82.9 F)
-15.6 C (3.9 F)
n/a
n/a
Feb
31.7 C (89.1 F)
-13.3 C (8.1 F)
n/a
n/a
Mar
31.7 C (89.1 F)
-10.0 C (14.0 F)
n/a
n/a
Apr
32.2 C (90.0 F)
-1.1 C (30.0 F)
n/a
n/a
May
36.7 C (98.1 F)
2.8 C (37.0 F)
n/a
n/a
Jun
40.6 C (105.1 F)
7.2 C (45.0 F)
n/a
n/a
Jul
40.6 C (105.1 F)
12.8 C (55.0 F)
n/a
n/a
Aug
41.1 C (106.0 F)
12.8 C (55.0 F)
n/a
n/a
Sep
38.9 C (102.0 F)
3.9 C (39.0 F)
n/a
n/a
Oct
37.2 C (99.0 F)
-2.2 C (28.0 F)
n/a
n/a
Nov
31.1 C (88.0 F)
-10.6 C (12.9 F)
n/a
n/a
Dec
28.3 C (82.9 F)
-15.6 C (3.9 F)
n/a
n/a
Which Years Hold Standing Records
1,464 standing records
Year with most
1,464 records at Dayton 1 N still stand. 1954 holds the most, with 86.
Standing records at Dayton 1 N by the year they were set
Year set
Standing records
1948
26
1949
34
1950
70
1951
64
1952
56
1953
47
1954
86
1955
54
1956
40
1957
41
1958
45
1959
34
1960
39
1961
37
1962
55
1963
58
1964
36
1965
40
1966
46
1967
65
1968
30
1969
30
1970
37
1971
40
1972
28
1973
17
1974
40
1975
40
1976
43
1977
43
1978
24
1979
27
1980
31
1981
46
1982
15
Wettest Day of Each Month
Dec: 210.8 mm (8.3 in)
The wettest day on record for each calendar month at Dayton 1 N. The most was 210.8 mm (8.3 in) on 28 December 1942.
Record daily precipitation for each month at Dayton 1 N
Month
Record daily precipitation (mm)
Date
Jan
95.3 mm (3.8 in)
23 January 1965
Feb
106.9 mm (4.2 in)
18 February 1961
Mar
149.9 mm (5.9 in)
29 March 1951
Apr
202.7 mm (8.0 in)
6 April 1964
May
105.4 mm (4.1 in)
8 May 1973
Jun
75.2 mm (3.0 in)
17 June 1942
Jul
97.8 mm (3.9 in)
21 July 1943
Aug
91.2 mm (3.6 in)
23 August 1960
Sep
177.8 mm (7.0 in)
8 September 1974
Oct
108.5 mm (4.3 in)
31 October 1967
Nov
68.8 mm (2.7 in)
18 November 1968
Dec
210.8 mm (8.3 in)
28 December 1942
Period of Record Coverage
1948 to 1982
Complete yearUnder 90 percent of days
35 years of record at Dayton 1 N, 1948 to 1982. 7 years have data for under 90 percent of days and are left out of rankings: 1948, 1969, 1970, 1972, 1978, 1980, 1982.
Cooler than the station meanWarmer than the station mean
One stripe for each of 24 complete years at Dayton 1 N, 1949 to 1981. Blue stripes are years cooler than the station's own mean of 18.0 C (64.4 F); red stripes are warmer. The coolest year was 1979, at 16.7 C (62.0 F), and the warmest was 1949, at 19.3 C (66.7 F). The strongest colour marks a difference of 1.4 C (2.5 F).
Annual mean temperature at Dayton 1 N as warming stripes, 1949 to 1981
Year
Annual mean temperature
Difference from the station mean
1949
19.3 C
+1.26 C
1950
19.1 C
+1.05 C
1951
18.7 C
+0.69 C
1952
18.4 C
+0.40 C
1953
18.7 C
+0.72 C
1954
19.0 C
+1.02 C
1955
18.3 C
+0.34 C
1956
18.4 C
+0.38 C
1957
18.6 C
+0.56 C
1958
17.0 C
-0.98 C
1959
17.8 C
-0.23 C
1960
17.1 C
-0.90 C
1961
17.6 C
-0.41 C
1962
18.3 C
+0.33 C
1963
17.6 C
-0.37 C
1964
17.9 C
-0.07 C
1965
18.4 C
+0.42 C
1966
17.6 C
-0.37 C
1968
17.3 C
-0.75 C
1974
17.9 C
-0.10 C
1975
17.7 C
-0.35 C
1976
16.9 C
-1.15 C
1979
16.7 C
-1.32 C
1981
17.7 C
-0.27 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
1940 to 1982
Yearly extremes at Dayton 1 N: the record and the median year
Measure
Record
Year of the record
Median year
Years with a value
Hottest day (TXx)
41.1 C (106.0 F)
1954
37.2 C (99.0 F)
35
Coldest night (TNn)
-15.6 C (3.9 F)
1962
-10.0 C (14.0 F)
35
Wettest day (Rx1day)
210.8 mm (8.3 in)
1942
86.4 mm (3.4 in)
43
Wettest five days (Rx5day)
240.1 mm (9.5 in)
1951
128.8 mm (5.1 in)
43
Longest dry spell (CDD)
35 days
1964
24 days
43
Hottest day (TXx)
The hottest day of the year at Dayton 1 N, 1940 to 1982. The record is 41.1 C (106.0 F) in 1954, marked on the chart; the median year is 37.2 C (99.0 F).
Hottest day (TXx) at Dayton 1 N by year
Year
Hottest day (TXx)
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
39.4 C (102.9 F)
1949
36.1 C (97.0 F)
1950
36.7 C (98.1 F)
1951
40.0 C (104.0 F)
1952
40.0 C (104.0 F)
1953
38.3 C (100.9 F)
1954
41.1 C (106.0 F)
1955
36.7 C (98.1 F)
1956
37.2 C (99.0 F)
1957
36.1 C (97.0 F)
1958
35.0 C (95.0 F)
1959
36.7 C (98.1 F)
1960
36.7 C (98.1 F)
1961
35.6 C (96.1 F)
1962
38.3 C (100.9 F)
1963
38.3 C (100.9 F)
1964
38.3 C (100.9 F)
1965
36.1 C (97.0 F)
1966
40.6 C (105.1 F)
1967
37.2 C (99.0 F)
1968
39.4 C (102.9 F)
1969
38.3 C (100.9 F)
1970
36.7 C (98.1 F)
1971
36.7 C (98.1 F)
1972
36.7 C (98.1 F)
1973
35.0 C (95.0 F)
1974
35.0 C (95.0 F)
1975
35.6 C (96.1 F)
1976
37.2 C (99.0 F)
1977
39.4 C (102.9 F)
1978
37.2 C (99.0 F)
1979
36.7 C (98.1 F)
1980
40.6 C (105.1 F)
1981
38.3 C (100.9 F)
1982
31.1 C (88.0 F)
Coldest night (TNn)
The coldest night of the year at Dayton 1 N, 1940 to 1982. The record is -15.6 C (3.9 F) in 1962, marked on the chart; the median year is -10.0 C (14.0 F).
Coldest night (TNn) at Dayton 1 N by year
Year
Coldest night (TNn)
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
-3.9 C (25.0 F)
1949
-5.6 C (21.9 F)
1950
-10.6 C (12.9 F)
1951
-12.8 C (9.0 F)
1952
-6.7 C (19.9 F)
1953
-8.3 C (17.1 F)
1954
-6.1 C (21.0 F)
1955
-7.8 C (18.0 F)
1956
-5.6 C (21.9 F)
1957
-9.4 C (15.1 F)
1958
-13.3 C (8.1 F)
1959
-9.4 C (15.1 F)
1960
-9.4 C (15.1 F)
1961
-10.0 C (14.0 F)
1962
-15.6 C (3.9 F)
1963
-15.6 C (3.9 F)
1964
-10.6 C (12.9 F)
1965
-9.4 C (15.1 F)
1966
-15.0 C (5.0 F)
1967
-8.9 C (16.0 F)
1968
-7.8 C (18.0 F)
1969
-10.6 C (12.9 F)
1970
-13.9 C (7.0 F)
1971
-10.6 C (12.9 F)
1972
-11.1 C (12.0 F)
1973
-7.8 C (18.0 F)
1974
-7.2 C (19.0 F)
1975
-10.0 C (14.0 F)
1976
-10.6 C (12.9 F)
1977
-15.6 C (3.9 F)
1978
-8.3 C (17.1 F)
1979
-11.1 C (12.0 F)
1980
-10.0 C (14.0 F)
1981
-13.3 C (8.1 F)
1982
-5.6 C (21.9 F)
Wettest day (Rx1day)
The wettest day of the year at Dayton 1 N, 1940 to 1982. The record is 210.8 mm (8.3 in) in 1942, marked on the chart; the median year is 86.4 mm (3.4 in).
Wettest day (Rx1day) at Dayton 1 N by year
Year
Wettest day (Rx1day)
1940
69.9 mm (2.8 in)
1941
92.2 mm (3.6 in)
1942
210.8 mm (8.3 in)
1943
102.9 mm (4.1 in)
1944
93.0 mm (3.7 in)
1945
140.7 mm (5.5 in)
1946
58.9 mm (2.3 in)
1947
73.2 mm (2.9 in)
1948
73.9 mm (2.9 in)
1949
95.3 mm (3.8 in)
1950
56.1 mm (2.2 in)
1951
149.9 mm (5.9 in)
1952
84.6 mm (3.3 in)
1953
82.6 mm (3.3 in)
1954
77.2 mm (3.0 in)
1955
99.8 mm (3.9 in)
1956
58.9 mm (2.3 in)
1957
66.0 mm (2.6 in)
1958
77.5 mm (3.1 in)
1959
60.5 mm (2.4 in)
1960
91.2 mm (3.6 in)
1961
106.9 mm (4.2 in)
1962
60.2 mm (2.4 in)
1963
70.1 mm (2.8 in)
1964
202.7 mm (8.0 in)
1965
95.3 mm (3.8 in)
1966
72.4 mm (2.9 in)
1967
108.5 mm (4.3 in)
1968
98.3 mm (3.9 in)
1969
65.8 mm (2.6 in)
1970
71.4 mm (2.8 in)
1971
120.7 mm (4.8 in)
1972
87.1 mm (3.4 in)
1973
148.6 mm (5.9 in)
1974
177.8 mm (7.0 in)
1975
79.2 mm (3.1 in)
1976
86.4 mm (3.4 in)
1977
96.0 mm (3.8 in)
1978
50.8 mm (2.0 in)
1979
103.4 mm (4.1 in)
1980
74.7 mm (2.9 in)
1981
58.9 mm (2.3 in)
1982
106.2 mm (4.2 in)
Wettest five days (Rx5day)
The wettest five days of the year at Dayton 1 N, 1940 to 1982. The record is 240.1 mm (9.5 in) in 1951, marked on the chart; the median year is 128.8 mm (5.1 in).
Wettest five days (Rx5day) at Dayton 1 N by year
Year
Wettest five days (Rx5day)
1940
108.8 mm (4.3 in)
1941
94.2 mm (3.7 in)
1942
217.9 mm (8.6 in)
1943
213.1 mm (8.4 in)
1944
163.3 mm (6.4 in)
1945
141.5 mm (5.6 in)
1946
89.7 mm (3.5 in)
1947
154.6 mm (6.1 in)
1948
178.4 mm (7.0 in)
1949
141.0 mm (5.6 in)
1950
115.3 mm (4.5 in)
1951
240.1 mm (9.5 in)
1952
116.3 mm (4.6 in)
1953
155.7 mm (6.1 in)
1954
88.6 mm (3.5 in)
1955
187.7 mm (7.4 in)
1956
120.9 mm (4.8 in)
1957
146.8 mm (5.8 in)
1958
106.9 mm (4.2 in)
1959
89.2 mm (3.5 in)
1960
93.0 mm (3.7 in)
1961
227.3 mm (8.9 in)
1962
83.6 mm (3.3 in)
1963
113.8 mm (4.5 in)
1964
234.0 mm (9.2 in)
1965
130.5 mm (5.1 in)
1966
183.2 mm (7.2 in)
1967
139.5 mm (5.5 in)
1968
125.3 mm (4.9 in)
1969
70.4 mm (2.8 in)
1970
117.8 mm (4.6 in)
1971
182.9 mm (7.2 in)
1972
118.9 mm (4.7 in)
1973
160.0 mm (6.3 in)
1974
184.9 mm (7.3 in)
1975
101.0 mm (4.0 in)
1976
118.6 mm (4.7 in)
1977
146.6 mm (5.8 in)
1978
102.4 mm (4.0 in)
1979
128.8 mm (5.1 in)
1980
132.1 mm (5.2 in)
1981
115.6 mm (4.6 in)
1982
106.2 mm (4.2 in)
Longest dry spell (CDD)
The longest dry spell of the year at Dayton 1 N, 1940 to 1982. The record is 35 days in 1964, marked on the chart; the median year is 24 days.
Longest dry spell (CDD) at Dayton 1 N by year
Year
Longest dry spell (CDD)
1940
21 days
1941
28 days
1942
32 days
1943
20 days
1944
26 days
1945
27 days
1946
30 days
1947
20 days
1948
18 days
1949
19 days
1950
18 days
1951
25 days
1952
30 days
1953
29 days
1954
22 days
1955
34 days
1956
22 days
1957
13 days
1958
28 days
1959
25 days
1960
16 days
1961
31 days
1962
28 days
1963
34 days
1964
35 days
1965
29 days
1966
14 days
1967
19 days
1968
23 days
1969
20 days
1970
20 days
1971
16 days
1972
25 days
1973
24 days
1974
19 days
1975
23 days
1976
19 days
1977
24 days
1978
35 days
1979
15 days
1980
27 days
1981
24 days
1982
10 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
24 years with a frost
Across 24 years with a frost, the median last spring frost at Dayton 1 N falls on 21 March and the median first autumn frost on 4 November, which leaves a median of 230 days between them.
Frost dates and growing season at Dayton 1 N
Measure
Median, all years
Earliest period
Recent period (1949 to 1981)
Recent against earliest
Fitted trend
Last spring frost
21 March
n/a
21 March
n/a
n/a
First autumn frost
4 November
n/a
4 November
n/a
n/a
Growing days
230 days
n/a
230 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.
Rainfall Return Levels
37 years, 1941 to 1981
A day with at least 86.5 mm (3.4 in) of rain is expected about once in 2 years. A day with at least 258.4 mm (10.2 in) of rain is expected about once in 100 years.
Rainfall return levels at Dayton 1 N: the daily rain expected about once in a given number of years
Expected about once in
A day with at least
Note
2 years
86.5 mm (3.4 in)
5 years
117.8 mm (4.6 in)
10 years
143.4 mm (5.6 in)
25 years
182.6 mm (7.2 in)
50 years
217.7 mm (8.6 in)
Longer than the 37 years of record
100 years
258.4 mm (10.2 in)
Longer than the 37 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, 37 years of values from 1941 to 1981.
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: 210.8 mm (8.3 in) in 1942; 202.7 mm (8.0 in) in 1964; 177.8 mm (7.0 in) in 1974.
Download the Data
Data for Dayton 1 N standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Dayton 1 N 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 2026-10-13 (13 October 2026). Records are computed by this site and are not official.