Record envelope, standing records and threshold days for Ashtabula (USC00330264), Ohio, United States, with 48 years of record.
Key Facts for Ashtabula
Ashtabula (USC00330264) is a weather station in Ohio, United States at 41.85 latitude and -80.80 longitude, 210 m (690 ft) above sea level.
The station reports from 1951 to 1998, 48 years of record.
1,464 records set at Ashtabula still stand.
Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
Ashtabula set a daily record high maximum temperature of 10.6 C (51.1 F) on 7 February 1998.
About the Station
Location: Ohio, United States, 41.85 latitude, -80.80 longitude.
Elevation: 210 m (690 ft).
Period of record: 1951 to 1998, 48 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 Ashtabula. 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 Ashtabula, with 2026 drawn through them
Month
Highest record high
Lowest record low
2026 highest maximum
2026 lowest minimum
Jan
20.0 C (68.0 F)
-29.4 C (-20.9 F)
n/a
n/a
Feb
20.0 C (68.0 F)
-25.0 C (-13.0 F)
n/a
n/a
Mar
27.2 C (81.0 F)
-22.2 C (-8.0 F)
n/a
n/a
Apr
31.7 C (89.1 F)
-10.0 C (14.0 F)
n/a
n/a
May
33.3 C (91.9 F)
-3.9 C (25.0 F)
n/a
n/a
Jun
37.8 C (100.0 F)
1.1 C (34.0 F)
n/a
n/a
Jul
36.7 C (98.1 F)
6.1 C (43.0 F)
n/a
n/a
Aug
35.0 C (95.0 F)
3.3 C (37.9 F)
n/a
n/a
Sep
36.7 C (98.1 F)
0.0 C (32.0 F)
n/a
n/a
Oct
31.1 C (88.0 F)
-5.0 C (23.0 F)
n/a
n/a
Nov
27.2 C (81.0 F)
-16.7 C (1.9 F)
n/a
n/a
Dec
23.9 C (75.0 F)
-22.2 C (-8.0 F)
n/a
n/a
Which Years Hold Standing Records
1,464 standing records
Year with most
1,464 records at Ashtabula still stand. 1976 holds the most, with 53.
Standing records at Ashtabula by the year they were set
Year set
Standing records
1951
27
1952
32
1953
32
1954
39
1955
48
1956
25
1957
27
1958
24
1959
48
1960
22
1961
30
1962
34
1963
50
1964
28
1965
41
1966
41
1967
40
1968
31
1969
17
1970
32
1971
22
1972
23
1973
27
1974
23
1975
37
1976
53
1977
50
1978
22
1979
49
1980
26
1981
19
1982
33
1983
27
1984
38
1985
17
1986
20
1987
19
1988
32
1989
29
1990
37
1991
49
1992
27
1993
28
1994
25
1995
16
1996
27
1997
19
1998
2
All-Time Record Progression
4 new records
4 all-time records were set at Ashtabula between 26 June 1988 and 19 January 1994. Each dot is a new record.
When Ashtabula set new all-time records
Date
Kind
Detail
1988-06-26
Record high maximum temperature
Record high maximum temperature 37.8 C (100.0 F)
1990-01-20
Record daily precipitation
Record daily precipitation 152.4 mm (6.0 in)
1994-01-19
Record low maximum temperature
Record low maximum temperature -18.9 C (-2.0 F)
1994-01-19
Record low minimum temperature
Record low minimum temperature -29.4 C (-20.9 F)
Wettest Day of Each Month
Jan: 152.4 mm (6.0 in)
The wettest day on record for each calendar month at Ashtabula. The most was 152.4 mm (6.0 in) on 20 January 1990.
Record daily precipitation for each month at Ashtabula
Month
Record daily precipitation (mm)
Date
Jan
152.4 mm (6.0 in)
20 January 1990
Feb
41.1 mm (1.6 in)
27 February 1997
Mar
63.5 mm (2.5 in)
2 March 1997
Apr
68.8 mm (2.7 in)
28 April 1959
May
47.8 mm (1.9 in)
19 May 1969
Jun
104.6 mm (4.1 in)
10 June 1986
Jul
101.6 mm (4.0 in)
29 July 1980
Aug
76.2 mm (3.0 in)
3 August 1987
Sep
119.4 mm (4.7 in)
13 September 1960
Oct
64.8 mm (2.6 in)
1 October 1981
Nov
98.0 mm (3.9 in)
5 November 1985
Dec
58.4 mm (2.3 in)
28 December 1968
Period of Record Coverage
1951 to 1998
Complete yearUnder 90 percent of days
48 years of record at Ashtabula, 1951 to 1998. 10 years have data for under 90 percent of days and are left out of rankings: 1951, 1985, 1986, 1987, 1988, 1992, 1995, 1996 and others.
Cooler than the station meanWarmer than the station mean
One stripe for each of 35 complete years at Ashtabula, 1952 to 1994. Blue stripes are years cooler than the station's own mean of 9.6 C (49.2 F); red stripes are warmer. The coolest year was 1976, at 8.3 C (47.0 F), and the warmest was 1953, at 11.0 C (51.8 F). The strongest colour marks a difference of 1.5 C (2.7 F).
Annual mean temperature at Ashtabula as warming stripes, 1952 to 1994
Year
Annual mean temperature
Difference from the station mean
1952
10.2 C
+0.57 C
1953
11.0 C
+1.43 C
1954
10.5 C
+0.89 C
1955
11.0 C
+1.39 C
1956
10.1 C
+0.47 C
1957
10.3 C
+0.67 C
1958
9.1 C
-0.44 C
1959
10.5 C
+0.91 C
1960
9.8 C
+0.19 C
1961
10.3 C
+0.69 C
1962
9.8 C
+0.26 C
1963
9.4 C
-0.23 C
1964
9.7 C
+0.07 C
1965
8.7 C
-0.88 C
1966
9.1 C
-0.44 C
1967
9.0 C
-0.62 C
1968
9.2 C
-0.35 C
1969
9.4 C
-0.22 C
1970
9.9 C
+0.28 C
1971
9.9 C
+0.27 C
1972
8.7 C
-0.89 C
1973
10.5 C
+0.96 C
1974
9.2 C
-0.35 C
1975
9.9 C
+0.36 C
1976
8.3 C
-1.25 C
1977
8.5 C
-1.12 C
1979
8.6 C
-0.95 C
1980
8.6 C
-0.95 C
1981
9.1 C
-0.49 C
1983
9.8 C
+0.26 C
1989
8.6 C
-1.01 C
1990
10.5 C
+0.95 C
1991
10.4 C
+0.80 C
1993
8.7 C
-0.85 C
1994
9.1 C
-0.45 C
The annual mean temperature here has fallen by 0.3 C (0.1 to 0.5) per decade over 1952 to 1994. In Fahrenheit: 0.5 F (0.1 to 0.8) per decade. The slope is a straight line fitted to 35 complete years; the brackets give its 95 percent interval.
Fitted temperature trends per decade at Ashtabula
Measure
Per decade (C)
Per decade (F)
Period
Complete years
Reading
Annual mean temperature
-0.3 C (-0.5 to -0.1) per decade
-0.5 F (-0.8 to -0.1) per decade
1952 to 1994
35
Fall
Mean daily maximum
-0.3 C (-0.6 to -0.1) per decade
-0.6 F (-1.0 to -0.2) per decade
1952 to 1994
35
Fall
Mean daily minimum
-0.20 C (-0.38 to -0.02) per decade
-0.36 F (-0.68 to -0.04) per decade
1952 to 1994
35
Fall
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
1951 to 1998
Yearly extremes at Ashtabula: 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)
1988
33.9 C (93.0 F)
48
Coldest night (TNn)
-29.4 C (-20.9 F)
1994
-19.7 C (-3.5 F)
48
Wettest day (Rx1day)
152.4 mm (6.0 in)
1990
56.4 mm (2.2 in)
48
Wettest five days (Rx5day)
171.9 mm (6.8 in)
1986
85.4 mm (3.4 in)
48
Longest dry spell (CDD)
35 days
1998
16 days
48
Hottest day (TXx)
The hottest day of the year at Ashtabula, 1951 to 1998. The record is 37.8 C (100.0 F) in 1988, marked on the chart; the median year is 33.9 C (93.0 F).
Hottest day (TXx) at Ashtabula by year
Year
Hottest day (TXx)
1951
32.8 C (91.0 F)
1952
36.7 C (98.1 F)
1953
36.7 C (98.1 F)
1954
35.0 C (95.0 F)
1955
35.6 C (96.1 F)
1956
35.0 C (95.0 F)
1957
33.3 C (91.9 F)
1958
32.2 C (90.0 F)
1959
33.9 C (93.0 F)
1960
32.8 C (91.0 F)
1961
36.7 C (98.1 F)
1962
32.8 C (91.0 F)
1963
32.8 C (91.0 F)
1964
33.3 C (91.9 F)
1965
32.8 C (91.0 F)
1966
35.0 C (95.0 F)
1967
33.3 C (91.9 F)
1968
33.9 C (93.0 F)
1969
34.4 C (93.9 F)
1970
32.8 C (91.0 F)
1971
36.1 C (97.0 F)
1972
33.9 C (93.0 F)
1973
35.6 C (96.1 F)
1974
33.9 C (93.0 F)
1975
33.9 C (93.0 F)
1976
32.2 C (90.0 F)
1977
33.9 C (93.0 F)
1978
35.0 C (95.0 F)
1979
31.7 C (89.1 F)
1980
34.4 C (93.9 F)
1981
33.9 C (93.0 F)
1982
32.2 C (90.0 F)
1983
34.4 C (93.9 F)
1984
32.8 C (91.0 F)
1985
33.3 C (91.9 F)
1986
32.8 C (91.0 F)
1987
32.2 C (90.0 F)
1988
37.8 C (100.0 F)
1989
32.8 C (91.0 F)
1990
36.1 C (97.0 F)
1991
33.9 C (93.0 F)
1992
31.1 C (88.0 F)
1993
33.9 C (93.0 F)
1994
32.2 C (90.0 F)
1995
34.4 C (93.9 F)
1996
33.3 C (91.9 F)
1997
32.8 C (91.0 F)
1998
13.3 C (55.9 F)
Coldest night (TNn)
The coldest night of the year at Ashtabula, 1951 to 1998. The record is -29.4 C (-20.9 F) in 1994, marked on the chart; the median year is -19.7 C (-3.5 F).
Coldest night (TNn) at Ashtabula by year
Year
Coldest night (TNn)
1951
-21.7 C (-7.1 F)
1952
-15.6 C (3.9 F)
1953
-14.4 C (6.1 F)
1954
-15.6 C (3.9 F)
1955
-18.9 C (-2.0 F)
1956
-13.3 C (8.1 F)
1957
-21.7 C (-7.1 F)
1958
-19.4 C (-2.9 F)
1959
-19.4 C (-2.9 F)
1960
-20.6 C (-5.1 F)
1961
-20.6 C (-5.1 F)
1962
-21.1 C (-6.0 F)
1963
-27.2 C (-17.0 F)
1964
-18.3 C (-0.9 F)
1965
-22.8 C (-9.0 F)
1966
-21.1 C (-6.0 F)
1967
-18.3 C (-0.9 F)
1968
-18.3 C (-0.9 F)
1969
-18.3 C (-0.9 F)
1970
-21.1 C (-6.0 F)
1971
-21.1 C (-6.0 F)
1972
-18.9 C (-2.0 F)
1973
-20.0 C (-4.0 F)
1974
-17.8 C (0.0 F)
1975
-18.9 C (-2.0 F)
1976
-21.7 C (-7.1 F)
1977
-23.3 C (-9.9 F)
1978
-17.8 C (0.0 F)
1979
-25.0 C (-13.0 F)
1980
-22.2 C (-8.0 F)
1981
-21.1 C (-6.0 F)
1982
-26.7 C (-16.1 F)
1983
-22.2 C (-8.0 F)
1984
-25.0 C (-13.0 F)
1985
-20.0 C (-4.0 F)
1986
-11.7 C (10.9 F)
1987
-22.2 C (-8.0 F)
1988
-19.4 C (-2.9 F)
1989
-20.6 C (-5.1 F)
1990
-16.7 C (1.9 F)
1991
-13.3 C (8.1 F)
1992
-19.4 C (-2.9 F)
1993
-18.9 C (-2.0 F)
1994
-29.4 C (-20.9 F)
1995
-16.1 C (3.0 F)
1996
-22.2 C (-8.0 F)
1997
-18.9 C (-2.0 F)
1998
-10.0 C (14.0 F)
Wettest day (Rx1day)
The wettest day of the year at Ashtabula, 1951 to 1998. The record is 152.4 mm (6.0 in) in 1990, marked on the chart; the median year is 56.4 mm (2.2 in).
Wettest day (Rx1day) at Ashtabula by year
Year
Wettest day (Rx1day)
1951
37.1 mm (1.5 in)
1952
41.7 mm (1.6 in)
1953
28.2 mm (1.1 in)
1954
61.7 mm (2.4 in)
1955
38.1 mm (1.5 in)
1956
54.4 mm (2.1 in)
1957
32.8 mm (1.3 in)
1958
45.0 mm (1.8 in)
1959
68.8 mm (2.7 in)
1960
119.4 mm (4.7 in)
1961
62.2 mm (2.4 in)
1962
53.3 mm (2.1 in)
1963
40.6 mm (1.6 in)
1964
38.9 mm (1.5 in)
1965
40.1 mm (1.6 in)
1966
71.1 mm (2.8 in)
1967
82.6 mm (3.3 in)
1968
58.4 mm (2.3 in)
1969
88.9 mm (3.5 in)
1970
46.2 mm (1.8 in)
1971
50.5 mm (2.0 in)
1972
49.5 mm (1.9 in)
1973
60.5 mm (2.4 in)
1974
67.1 mm (2.6 in)
1975
66.8 mm (2.6 in)
1976
88.9 mm (3.5 in)
1977
74.9 mm (2.9 in)
1978
28.4 mm (1.1 in)
1979
96.5 mm (3.8 in)
1980
101.6 mm (4.0 in)
1981
64.8 mm (2.6 in)
1982
64.5 mm (2.5 in)
1983
50.0 mm (2.0 in)
1984
63.5 mm (2.5 in)
1985
98.0 mm (3.9 in)
1986
104.6 mm (4.1 in)
1987
76.2 mm (3.0 in)
1988
43.9 mm (1.7 in)
1989
40.6 mm (1.6 in)
1990
152.4 mm (6.0 in)
1991
88.9 mm (3.5 in)
1992
43.2 mm (1.7 in)
1993
33.0 mm (1.3 in)
1994
50.8 mm (2.0 in)
1995
53.3 mm (2.1 in)
1996
46.2 mm (1.8 in)
1997
76.7 mm (3.0 in)
1998
0.0 mm (0.00 in)
Wettest five days (Rx5day)
The wettest five days of the year at Ashtabula, 1951 to 1998. The record is 171.9 mm (6.8 in) in 1986, marked on the chart; the median year is 85.4 mm (3.4 in).
Wettest five days (Rx5day) at Ashtabula by year
Year
Wettest five days (Rx5day)
1951
58.0 mm (2.3 in)
1952
62.8 mm (2.5 in)
1953
71.6 mm (2.8 in)
1954
142.8 mm (5.6 in)
1955
77.8 mm (3.1 in)
1956
110.7 mm (4.4 in)
1957
90.2 mm (3.6 in)
1958
66.4 mm (2.6 in)
1959
107.7 mm (4.2 in)
1960
121.7 mm (4.8 in)
1961
94.0 mm (3.7 in)
1962
90.7 mm (3.6 in)
1963
72.3 mm (2.8 in)
1964
56.7 mm (2.2 in)
1965
56.9 mm (2.2 in)
1966
81.3 mm (3.2 in)
1967
96.8 mm (3.8 in)
1968
68.6 mm (2.7 in)
1969
91.5 mm (3.6 in)
1970
66.0 mm (2.6 in)
1971
85.4 mm (3.4 in)
1972
104.7 mm (4.1 in)
1973
77.5 mm (3.1 in)
1974
84.6 mm (3.3 in)
1975
112.3 mm (4.4 in)
1976
101.1 mm (4.0 in)
1977
82.7 mm (3.3 in)
1978
66.9 mm (2.6 in)
1979
114.5 mm (4.5 in)
1980
135.2 mm (5.3 in)
1981
104.1 mm (4.1 in)
1982
85.3 mm (3.4 in)
1983
103.7 mm (4.1 in)
1984
76.2 mm (3.0 in)
1985
130.0 mm (5.1 in)
1986
171.9 mm (6.8 in)
1987
92.7 mm (3.6 in)
1988
74.5 mm (2.9 in)
1989
73.4 mm (2.9 in)
1990
157.5 mm (6.2 in)
1991
99.9 mm (3.9 in)
1992
83.8 mm (3.3 in)
1993
76.3 mm (3.0 in)
1994
76.1 mm (3.0 in)
1995
83.8 mm (3.3 in)
1996
146.1 mm (5.8 in)
1997
130.3 mm (5.1 in)
1998
0.0 mm (0.00 in)
Longest dry spell (CDD)
The longest dry spell of the year at Ashtabula, 1951 to 1998. The record is 35 days in 1998, marked on the chart; the median year is 16 days.
Longest dry spell (CDD) at Ashtabula by year
Year
Longest dry spell (CDD)
1951
13 days
1952
27 days
1953
20 days
1954
16 days
1955
18 days
1956
12 days
1957
21 days
1958
11 days
1959
15 days
1960
13 days
1961
24 days
1962
15 days
1963
27 days
1964
25 days
1965
12 days
1966
23 days
1967
22 days
1968
10 days
1969
25 days
1970
12 days
1971
12 days
1972
12 days
1973
11 days
1974
13 days
1975
14 days
1976
16 days
1977
26 days
1978
25 days
1979
15 days
1980
14 days
1981
16 days
1982
16 days
1983
16 days
1984
18 days
1985
13 days
1986
14 days
1987
27 days
1988
23 days
1989
20 days
1990
13 days
1991
20 days
1992
13 days
1993
17 days
1994
17 days
1995
25 days
1996
18 days
1997
33 days
1998
35 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
35 years with a frost
Across 35 years with a frost, the median last spring frost at Ashtabula falls on 30 April and the median first autumn frost on 27 October, which leaves a median of 175 days between them.
Fitted over all years, the growing season changes by +2.8 days per decade at this station.
Frost dates and growing season at Ashtabula
Measure
Median, all years
Earliest period
Recent period (1957 to 1994)
Recent against earliest
Fitted trend
Last spring frost
30 April
n/a
30 April
n/a
-1.8 days per decade
First autumn frost
27 October
n/a
27 October
n/a
+1.1 days per decade
Growing days
175 days
n/a
177 days
n/a
+2.8 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
42 years, 1952 to 1995
A day with at least 55.9 mm (2.2 in) of rain is expected about once in 2 years. A day with at least 152.9 mm (6.0 in) of rain is expected about once in 100 years.
Rainfall return levels at Ashtabula: the daily rain expected about once in a given number of years
Expected about once in
A day with at least
Note
2 years
55.9 mm (2.2 in)
5 years
77.7 mm (3.1 in)
10 years
93.7 mm (3.7 in)
25 years
115.9 mm (4.6 in)
50 years
133.8 mm (5.3 in)
Longer than the 42 years of record
100 years
152.9 mm (6.0 in)
Longer than the 42 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, 42 years of values from 1952 to 1995.
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: 152.4 mm (6.0 in) in 1990; 119.4 mm (4.7 in) in 1960; 101.6 mm (4.0 in) in 1980.
Download the Data
Data for Ashtabula standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Ashtabula 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.