Record envelope, standing records and threshold days for McClellanville (USC00385628), South Carolina, United States, with 50 years of record.
Key Facts for McClellanville
McClellanville (USC00385628) is a weather station in South Carolina, United States at 33.07 latitude and -79.47 longitude, 4 m (12 ft) above sea level.
The station reports from 1957 to 2006, 50 years of record.
1,464 records set at McClellanville still stand.
Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
McClellanville set a daily record precipitation of 108.2 mm (4.3 in) on 31 August 2006.
About the Station
Location: South Carolina, United States, 33.07 latitude, -79.47 longitude.
Elevation: 4 m (12 ft).
Period of record: 1957 to 2006, 50 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 McClellanville. 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 McClellanville, with 2026 drawn through them
Month
Highest record high
Lowest record low
2026 highest maximum
2026 lowest minimum
Jan
27.2 C (81.0 F)
-15.6 C (3.9 F)
n/a
n/a
Feb
27.2 C (81.0 F)
-10.6 C (12.9 F)
n/a
n/a
Mar
31.7 C (89.1 F)
-10.6 C (12.9 F)
n/a
n/a
Apr
35.6 C (96.1 F)
-5.0 C (23.0 F)
n/a
n/a
May
36.1 C (97.0 F)
2.2 C (36.0 F)
n/a
n/a
Jun
40.0 C (104.0 F)
6.1 C (43.0 F)
n/a
n/a
Jul
40.0 C (104.0 F)
12.2 C (54.0 F)
n/a
n/a
Aug
40.0 C (104.0 F)
12.8 C (55.0 F)
n/a
n/a
Sep
35.6 C (96.1 F)
5.0 C (41.0 F)
n/a
n/a
Oct
35.6 C (96.1 F)
-2.2 C (28.0 F)
n/a
n/a
Nov
31.7 C (89.1 F)
-8.3 C (17.1 F)
n/a
n/a
Dec
31.1 C (88.0 F)
-15.0 C (5.0 F)
n/a
n/a
Which Years Hold Standing Records
1,464 standing records
Year with most
1,464 records at McClellanville still stand. 1967 holds the most, with 56.
Standing records at McClellanville by the year they were set
Year set
Standing records
1957
11
1958
38
1959
53
1960
41
1961
38
1962
33
1963
37
1964
48
1965
16
1966
49
1967
56
1968
6
1969
7
1970
19
1971
30
1972
35
1973
24
1974
33
1975
21
1976
37
1977
22
1978
21
1979
13
1980
36
1981
48
1982
28
1983
44
1984
44
1985
46
1986
38
1987
21
1988
32
1989
39
1990
32
1991
45
1992
27
1993
11
1994
16
1995
27
1996
30
1997
34
1998
39
1999
42
2000
5
2001
15
2002
33
2003
4
2004
7
2005
10
2006
23
All-Time Record Progression
7 new records
7 all-time records were set at McClellanville between 23 December 1989 and 28 July 2006. Each dot is a new record.
When McClellanville set new all-time records
Date
Kind
Detail
1989-12-23
Record snow depth
Record snow depth 20.3 cm (8.0 in)
1989-12-24
Record snow depth
Record snow depth 22.9 cm (9.0 in)
1990-06-21
Record high maximum temperature
Record high maximum temperature 40.0 C (104.0 F)
1990-10-11
Record daily precipitation
Record daily precipitation 189.2 mm (7.4 in)
1998-08-29
Record high minimum temperature
Record high minimum temperature 27.2 C (81.0 F)
1999-09-15
Record daily precipitation
Record daily precipitation 260.6 mm (10.3 in)
2006-07-28
Record high minimum temperature
Record high minimum temperature 27.8 C (82.0 F)
Wettest Day of Each Month
Sep: 260.6 mm (10.3 in)
The wettest day on record for each calendar month at McClellanville. The most was 260.6 mm (10.3 in) on 15 September 1999.
Record daily precipitation for each month at McClellanville
Month
Record daily precipitation (mm)
Date
Jan
89.2 mm (3.5 in)
23 January 1998
Feb
74.9 mm (2.9 in)
7 February 1965
Mar
113.0 mm (4.4 in)
17 March 1983
Apr
123.4 mm (4.9 in)
28 April 1997
May
92.7 mm (3.6 in)
23 May 1967
Jun
115.3 mm (4.5 in)
28 June 1997
Jul
108.0 mm (4.3 in)
9 July 1959
Aug
130.8 mm (5.1 in)
13 August 2004
Sep
260.6 mm (10.3 in)
15 September 1999
Oct
189.2 mm (7.4 in)
11 October 1990
Nov
158.0 mm (6.2 in)
21 November 2005
Dec
91.9 mm (3.6 in)
27 December 1964
Period of Record Coverage
1957 to 2006
Complete yearUnder 90 percent of days
50 years of record at McClellanville, 1957 to 2006. 23 years have data for under 90 percent of days and are left out of rankings: 1957, 1968, 1969, 1970, 1971, 1972, 1973, 1974 and others.
Cooler than the station meanWarmer than the station mean
One stripe for each of 27 complete years at McClellanville, 1958 to 2002. Blue stripes are years cooler than the station's own mean of 17.9 C (64.2 F); red stripes are warmer. The coolest year was 1966, at 17.0 C (62.5 F), and the warmest was 1990, at 19.4 C (66.9 F). The strongest colour marks a difference of 1.5 C (2.7 F).
Annual mean temperature at McClellanville as warming stripes, 1958 to 2002
Year
Annual mean temperature
Difference from the station mean
1958
17.1 C
-0.79 C
1959
18.3 C
+0.39 C
1960
17.4 C
-0.55 C
1961
17.7 C
-0.21 C
1962
17.5 C
-0.39 C
1963
17.1 C
-0.84 C
1964
17.8 C
-0.08 C
1965
17.6 C
-0.28 C
1966
17.0 C
-0.94 C
1967
17.2 C
-0.71 C
1972
18.2 C
+0.29 C
1981
17.1 C
-0.80 C
1982
18.3 C
+0.35 C
1983
17.2 C
-0.68 C
1984
17.6 C
-0.32 C
1985
18.4 C
+0.47 C
1987
17.8 C
-0.09 C
1988
17.2 C
-0.67 C
1990
19.4 C
+1.48 C
1991
19.2 C
+1.25 C
1992
18.2 C
+0.28 C
1995
18.1 C
+0.23 C
1996
17.7 C
-0.17 C
1997
17.9 C
+0.03 C
1998
19.3 C
+1.40 C
1999
18.5 C
+0.59 C
2002
18.6 C
+0.67 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
1957 to 2006
Yearly extremes at McClellanville: 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)
1990
36.1 C (97.0 F)
50
Coldest night (TNn)
-15.6 C (3.9 F)
1985
-8.9 C (16.0 F)
50
Wettest day (Rx1day)
260.6 mm (10.3 in)
1999
85.1 mm (3.4 in)
50
Wettest five days (Rx5day)
307.0 mm (12.1 in)
2004
129.6 mm (5.1 in)
50
Longest dry spell (CDD)
33 days
1967
20 days
50
Hottest day (TXx)
The hottest day of the year at McClellanville, 1957 to 2006. The record is 40.0 C (104.0 F) in 1990, marked on the chart; the median year is 36.1 C (97.0 F).
Hottest day (TXx) at McClellanville by year
Year
Hottest day (TXx)
1957
27.2 C (81.0 F)
1958
37.8 C (100.0 F)
1959
38.3 C (100.9 F)
1960
36.7 C (98.1 F)
1961
37.2 C (99.0 F)
1962
36.1 C (97.0 F)
1963
35.6 C (96.1 F)
1964
36.7 C (98.1 F)
1965
35.0 C (95.0 F)
1966
36.1 C (97.0 F)
1967
34.4 C (93.9 F)
1968
33.3 C (91.9 F)
1969
35.0 C (95.0 F)
1970
37.8 C (100.0 F)
1971
36.1 C (97.0 F)
1972
35.6 C (96.1 F)
1973
34.4 C (93.9 F)
1974
34.4 C (93.9 F)
1975
34.4 C (93.9 F)
1976
36.7 C (98.1 F)
1977
32.2 C (90.0 F)
1978
37.2 C (99.0 F)
1979
35.0 C (95.0 F)
1980
37.2 C (99.0 F)
1981
37.2 C (99.0 F)
1982
35.6 C (96.1 F)
1983
38.9 C (102.0 F)
1984
36.7 C (98.1 F)
1985
38.9 C (102.0 F)
1986
36.7 C (98.1 F)
1987
36.7 C (98.1 F)
1988
35.0 C (95.0 F)
1989
36.1 C (97.0 F)
1990
40.0 C (104.0 F)
1991
35.6 C (96.1 F)
1992
36.7 C (98.1 F)
1993
38.3 C (100.9 F)
1994
36.1 C (97.0 F)
1995
38.3 C (100.9 F)
1996
37.8 C (100.0 F)
1997
36.1 C (97.0 F)
1998
37.8 C (100.0 F)
1999
40.0 C (104.0 F)
2000
28.3 C (82.9 F)
2001
35.6 C (96.1 F)
2002
37.2 C (99.0 F)
2003
21.7 C (71.1 F)
2004
32.2 C (90.0 F)
2005
35.6 C (96.1 F)
2006
37.2 C (99.0 F)
Coldest night (TNn)
The coldest night of the year at McClellanville, 1957 to 2006. The record is -15.6 C (3.9 F) in 1985, marked on the chart; the median year is -8.9 C (16.0 F).
Coldest night (TNn) at McClellanville by year
Year
Coldest night (TNn)
1957
-9.4 C (15.1 F)
1958
-10.0 C (14.0 F)
1959
-9.4 C (15.1 F)
1960
-10.0 C (14.0 F)
1961
-8.3 C (17.1 F)
1962
-11.7 C (10.9 F)
1963
-9.4 C (15.1 F)
1964
-8.9 C (16.0 F)
1965
-7.2 C (19.0 F)
1966
-12.2 C (10.0 F)
1967
-9.4 C (15.1 F)
1968
-10.6 C (12.9 F)
1969
-7.8 C (18.0 F)
1970
-8.3 C (17.1 F)
1971
-8.3 C (17.1 F)
1972
-10.6 C (12.9 F)
1973
-7.8 C (18.0 F)
1974
-7.8 C (18.0 F)
1975
-5.0 C (23.0 F)
1976
-8.9 C (16.0 F)
1977
-10.0 C (14.0 F)
1978
-7.8 C (18.0 F)
1979
-8.9 C (16.0 F)
1980
-10.6 C (12.9 F)
1981
-15.0 C (5.0 F)
1982
-12.8 C (9.0 F)
1983
-15.0 C (5.0 F)
1984
-7.8 C (18.0 F)
1985
-15.6 C (3.9 F)
1986
-11.1 C (12.0 F)
1987
-4.4 C (24.1 F)
1988
-8.3 C (17.1 F)
1989
-14.4 C (6.1 F)
1990
-4.4 C (24.1 F)
1991
-7.2 C (19.0 F)
1992
-6.7 C (19.9 F)
1993
-7.2 C (19.0 F)
1994
-1.7 C (28.9 F)
1995
-7.8 C (18.0 F)
1996
-10.6 C (12.9 F)
1997
-6.7 C (19.9 F)
1998
-6.1 C (21.0 F)
1999
-10.0 C (14.0 F)
2000
-7.8 C (18.0 F)
2001
-8.9 C (16.0 F)
2002
-8.9 C (16.0 F)
2003
-10.0 C (14.0 F)
2004
-5.6 C (21.9 F)
2005
-7.8 C (18.0 F)
2006
-2.8 C (27.0 F)
Wettest day (Rx1day)
The wettest day of the year at McClellanville, 1957 to 2006. The record is 260.6 mm (10.3 in) in 1999, marked on the chart; the median year is 85.1 mm (3.4 in).
Wettest day (Rx1day) at McClellanville by year
Year
Wettest day (Rx1day)
1957
51.6 mm (2.0 in)
1958
72.4 mm (2.9 in)
1959
108.0 mm (4.3 in)
1960
120.7 mm (4.8 in)
1961
119.4 mm (4.7 in)
1962
88.9 mm (3.5 in)
1963
63.5 mm (2.5 in)
1964
152.4 mm (6.0 in)
1965
74.9 mm (2.9 in)
1966
83.8 mm (3.3 in)
1967
92.7 mm (3.6 in)
1968
44.7 mm (1.8 in)
1969
66.0 mm (2.6 in)
1970
55.9 mm (2.2 in)
1971
110.5 mm (4.4 in)
1972
72.6 mm (2.9 in)
1973
100.8 mm (4.0 in)
1974
86.4 mm (3.4 in)
1975
47.8 mm (1.9 in)
1976
101.6 mm (4.0 in)
1977
68.6 mm (2.7 in)
1978
53.3 mm (2.1 in)
1979
63.5 mm (2.5 in)
1980
89.4 mm (3.5 in)
1981
98.0 mm (3.9 in)
1982
103.6 mm (4.1 in)
1983
113.0 mm (4.4 in)
1984
74.7 mm (2.9 in)
1985
156.2 mm (6.1 in)
1986
65.0 mm (2.6 in)
1987
125.7 mm (4.9 in)
1988
62.2 mm (2.4 in)
1989
74.2 mm (2.9 in)
1990
189.2 mm (7.4 in)
1991
54.4 mm (2.1 in)
1992
82.3 mm (3.2 in)
1993
52.1 mm (2.1 in)
1994
156.2 mm (6.1 in)
1995
91.4 mm (3.6 in)
1996
80.5 mm (3.2 in)
1997
123.4 mm (4.9 in)
1998
89.2 mm (3.5 in)
1999
260.6 mm (10.3 in)
2000
39.1 mm (1.5 in)
2001
29.0 mm (1.1 in)
2002
62.5 mm (2.5 in)
2003
5.6 mm (0.22 in)
2004
130.8 mm (5.1 in)
2005
158.0 mm (6.2 in)
2006
108.2 mm (4.3 in)
Wettest five days (Rx5day)
The wettest five days of the year at McClellanville, 1957 to 2006. The record is 307.0 mm (12.1 in) in 2004, marked on the chart; the median year is 129.6 mm (5.1 in).
Wettest five days (Rx5day) at McClellanville by year
Year
Wettest five days (Rx5day)
1957
63.5 mm (2.5 in)
1958
94.7 mm (3.7 in)
1959
226.6 mm (8.9 in)
1960
151.2 mm (6.0 in)
1961
136.1 mm (5.4 in)
1962
187.5 mm (7.4 in)
1963
118.9 mm (4.7 in)
1964
202.2 mm (8.0 in)
1965
141.7 mm (5.6 in)
1966
147.3 mm (5.8 in)
1967
118.4 mm (4.7 in)
1968
67.5 mm (2.7 in)
1969
148.6 mm (5.9 in)
1970
105.7 mm (4.2 in)
1971
172.7 mm (6.8 in)
1972
107.0 mm (4.2 in)
1973
257.0 mm (10.1 in)
1974
102.6 mm (4.0 in)
1975
129.2 mm (5.1 in)
1976
137.2 mm (5.4 in)
1977
83.8 mm (3.3 in)
1978
81.7 mm (3.2 in)
1979
68.8 mm (2.7 in)
1980
108.5 mm (4.3 in)
1981
148.8 mm (5.9 in)
1982
163.3 mm (6.4 in)
1983
130.0 mm (5.1 in)
1984
104.3 mm (4.1 in)
1985
186.0 mm (7.3 in)
1986
108.7 mm (4.3 in)
1987
238.7 mm (9.4 in)
1988
94.0 mm (3.7 in)
1989
75.5 mm (3.0 in)
1990
261.6 mm (10.3 in)
1991
90.1 mm (3.5 in)
1992
160.4 mm (6.3 in)
1993
84.1 mm (3.3 in)
1994
185.1 mm (7.3 in)
1995
214.4 mm (8.4 in)
1996
115.6 mm (4.6 in)
1997
141.0 mm (5.6 in)
1998
129.1 mm (5.1 in)
1999
269.3 mm (10.6 in)
2000
48.0 mm (1.9 in)
2001
35.7 mm (1.4 in)
2002
190.0 mm (7.5 in)
2003
21.9 mm (0.9 in)
2004
307.0 mm (12.1 in)
2005
159.8 mm (6.3 in)
2006
108.5 mm (4.3 in)
Longest dry spell (CDD)
The longest dry spell of the year at McClellanville, 1957 to 2006. The record is 33 days in 1967, marked on the chart; the median year is 20 days.
Longest dry spell (CDD) at McClellanville by year
Year
Longest dry spell (CDD)
1957
20 days
1958
17 days
1959
20 days
1960
22 days
1961
29 days
1962
16 days
1963
25 days
1964
24 days
1965
21 days
1966
30 days
1967
33 days
1968
15 days
1969
28 days
1970
30 days
1971
13 days
1972
32 days
1973
19 days
1974
25 days
1975
15 days
1976
28 days
1977
25 days
1978
31 days
1979
18 days
1980
24 days
1981
22 days
1982
20 days
1983
21 days
1984
21 days
1985
21 days
1986
20 days
1987
24 days
1988
19 days
1989
16 days
1990
20 days
1991
23 days
1992
23 days
1993
18 days
1994
18 days
1995
20 days
1996
24 days
1997
15 days
1998
24 days
1999
18 days
2000
12 days
2001
18 days
2002
18 days
2003
20 days
2004
14 days
2005
17 days
2006
14 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
27 years with a frost
Across 27 years with a frost, the median last spring frost at McClellanville falls on 23 March and the median first autumn frost on 16 November, which leaves a median of 241 days between them.
Fitted over all years, the growing season changes by +3.3 days per decade at this station.
Frost dates and growing season at McClellanville
Measure
Median, all years
Earliest period
Recent period (1958 to 2002)
Recent against earliest
Fitted trend
Last spring frost
23 March
n/a
23 March
n/a
-1.3 days per decade
First autumn frost
16 November
n/a
16 November
n/a
+1.9 days per decade
Growing days
241 days
n/a
241 days
n/a
+3.3 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
35 years, 1958 to 2002
A day with at least 88.0 mm (3.5 in) of rain is expected about once in 2 years. A day with at least 259.7 mm (10.2 in) of rain is expected about once in 100 years.
Rainfall return levels at McClellanville: the daily rain expected about once in a given number of years
Expected about once in
A day with at least
Note
2 years
88.0 mm (3.5 in)
5 years
121.6 mm (4.8 in)
10 years
148.1 mm (5.8 in)
25 years
187.3 mm (7.4 in)
50 years
221.3 mm (8.7 in)
Longer than the 35 years of record
100 years
259.7 mm (10.2 in)
Longer than the 35 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, 35 years of values from 1958 to 2002.
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: 260.6 mm (10.3 in) in 1999; 189.2 mm (7.4 in) in 1990; 156.2 mm (6.1 in) in 1985.
Download the Data
Data for McClellanville standing records by year: CSV or JSON. Field meanings are on the data page.
Data for McClellanville 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.