Record envelope, standing records and threshold days for Charleston (USP00381549), South Carolina, United States, with 48 years of record.
Key Facts for Charleston
Charleston (USP00381549) is a weather station in South Carolina, United States at 32.78 latitude and -79.93 longitude, 5 m (17 ft) above sea level.
The station reports from 1845 to 1892, 48 years of record.
1,464 records set at Charleston still stand.
Records are tracked for tmax, tmin, prcp: an element needs 30 years of data to be eligible.
Charleston set a daily record low maximum temperature of 1.7 C (35.1 F) on 28 December 1892.
About the Station
Location: South Carolina, United States, 32.78 latitude, -79.93 longitude.
Elevation: 5 m (17 ft).
Period of record: 1845 to 1892, 48 years.
Eligible elements: tmax, tmin, 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 Charleston. 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 Charleston, with 2026 drawn through them
Month
Highest record high
Lowest record low
2026 highest maximum
2026 lowest minimum
Jan
26.7 C (80.1 F)
-11.9 C (10.6 F)
n/a
n/a
Feb
26.9 C (80.4 F)
-10.4 C (13.3 F)
n/a
n/a
Mar
30.0 C (86.0 F)
-5.0 C (23.0 F)
n/a
n/a
Apr
33.3 C (91.9 F)
0.0 C (32.0 F)
n/a
n/a
May
35.6 C (96.1 F)
8.3 C (46.9 F)
n/a
n/a
Jun
38.9 C (102.0 F)
9.4 C (48.9 F)
n/a
n/a
Jul
40.0 C (104.0 F)
16.7 C (62.1 F)
n/a
n/a
Aug
37.8 C (100.0 F)
15.6 C (60.1 F)
n/a
n/a
Sep
34.4 C (93.9 F)
7.2 C (45.0 F)
n/a
n/a
Oct
35.0 C (95.0 F)
-1.1 C (30.0 F)
n/a
n/a
Nov
29.4 C (84.9 F)
-5.6 C (21.9 F)
n/a
n/a
Dec
25.6 C (78.1 F)
-10.6 C (12.9 F)
n/a
n/a
Which Years Hold Standing Records
1,464 standing records
Year with most
1,464 records at Charleston still stand. 1845 holds the most, with 65.
Standing records at Charleston by the year they were set
Year set
Standing records
1845
65
1846
35
1847
41
1848
27
1849
55
1850
42
1851
61
1852
49
1853
30
1854
51
1855
46
1856
63
1857
60
1858
44
1859
42
1860
24
1861
35
1862
48
1863
45
1876
41
1877
23
1878
27
1879
48
1880
47
1881
34
1882
25
1883
47
1884
40
1885
21
1886
41
1887
45
1888
26
1889
47
1890
40
1891
32
1892
17
Wettest Day of Each Month
Apr: 210.8 mm (8.3 in)
The wettest day on record for each calendar month at Charleston. The most was 210.8 mm (8.3 in) on 13 April 1877.
Record daily precipitation for each month at Charleston
Month
Record daily precipitation (mm)
Date
Jan
95.2 mm (3.7 in)
8 January 1884
Feb
57.2 mm (2.3 in)
4 February 1858
Mar
116.8 mm (4.6 in)
3 March 1847
Apr
210.8 mm (8.3 in)
13 April 1877
May
174.0 mm (6.9 in)
12 May 1845
Jun
124.7 mm (4.9 in)
12 June 1876
Jul
165.1 mm (6.5 in)
28 July 1853
Aug
127.0 mm (5.0 in)
31 August 1885
Sep
138.2 mm (5.4 in)
12 September 1884
Oct
170.2 mm (6.7 in)
13 October 1848
Nov
99.6 mm (3.9 in)
14 November 1888
Dec
77.5 mm (3.1 in)
24 December 1887
Period of Record Coverage
1845 to 1892
Complete yearUnder 90 percent of days
36 years of record at Charleston, 1845 to 1892. 2 years have data for under 90 percent of days and are left out of rankings: 1876, 1881.
Cooler than the station meanWarmer than the station mean
One stripe for each of 33 complete years at Charleston, 1845 to 1892. Blue stripes are years cooler than the station's own mean of 18.9 C (66.0 F); red stripes are warmer. The coolest year was 1862, at 17.7 C (63.8 F), and the warmest was 1890, at 19.9 C (67.9 F). The strongest colour marks a difference of 1.3 C (2.3 F).
Annual mean temperature at Charleston as warming stripes, 1845 to 1892
Year
Annual mean temperature
Difference from the station mean
1845
18.2 C
-0.64 C
1846
18.5 C
-0.34 C
1847
18.9 C
-0.01 C
1848
19.1 C
+0.20 C
1849
19.2 C
+0.30 C
1850
19.5 C
+0.59 C
1851
19.5 C
+0.59 C
1852
19.3 C
+0.41 C
1853
19.0 C
+0.09 C
1854
19.3 C
+0.37 C
1855
18.8 C
-0.09 C
1856
18.2 C
-0.65 C
1857
18.2 C
-0.67 C
1858
18.9 C
+0.05 C
1859
19.2 C
+0.34 C
1860
18.6 C
-0.25 C
1861
18.1 C
-0.75 C
1862
17.7 C
-1.21 C
1863
18.2 C
-0.70 C
1877
19.1 C
+0.19 C
1878
19.3 C
+0.37 C
1879
19.2 C
+0.29 C
1880
19.4 C
+0.51 C
1882
19.6 C
+0.73 C
1883
19.6 C
+0.72 C
1884
19.5 C
+0.58 C
1886
17.8 C
-1.06 C
1887
18.5 C
-0.35 C
1888
18.8 C
-0.06 C
1889
18.7 C
-0.20 C
1890
19.9 C
+1.06 C
1891
18.9 C
+0.01 C
1892
18.4 C
-0.47 C
The fitted trend in annual mean temperature here over 1845 to 1892 is 0.04 C (-0.08 to 0.17) per decade. The interval includes zero, so the trend is not clearly different from zero. In Fahrenheit: 0.1 F (-0.1 to 0.3) per decade. The slope is a straight line fitted to 33 complete years; the brackets give its 95 percent interval.
Fitted temperature trends per decade at Charleston
Measure
Per decade (C)
Per decade (F)
Period
Complete years
Reading
Annual mean temperature
0.04 C (-0.08 to 0.17) per decade
0.1 F (-0.1 to 0.3) per decade
1845 to 1892
33
Not clearly different from zero
Mean daily maximum
0.12 C (-0.04 to 0.28) per decade
0.2 F (-0.1 to 0.5) per decade
1845 to 1892
33
Not clearly different from zero
Mean daily minimum
-0.03 C (-0.21 to 0.15) per decade
-0.1 F (-0.4 to 0.3) per decade
1845 to 1892
33
Not clearly different from zero
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
1845 to 1892
Yearly extremes at Charleston: 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)
1879
36.0 C (96.7 F)
36
Coldest night (TNn)
-11.9 C (10.6 F)
1886
-4.4 C (24.1 F)
36
Wettest day (Rx1day)
210.8 mm (8.3 in)
1877
87.1 mm (3.4 in)
35
Wettest five days (Rx5day)
329.4 mm (13.0 in)
1876
132.6 mm (5.2 in)
35
Longest dry spell (CDD)
43 days
1886
22 days
35
Hottest day (TXx)
The hottest day of the year at Charleston, 1845 to 1892. The record is 40.0 C (104.0 F) in 1879, marked on the chart; the median year is 36.0 C (96.7 F).
Hottest day (TXx) at Charleston by year
Year
Hottest day (TXx)
1845
35.6 C (96.1 F)
1846
31.7 C (89.1 F)
1847
33.3 C (91.9 F)
1848
32.8 C (91.0 F)
1849
35.0 C (95.0 F)
1850
35.0 C (95.0 F)
1851
36.1 C (97.0 F)
1852
34.4 C (93.9 F)
1853
34.4 C (93.9 F)
1854
36.1 C (97.0 F)
1855
35.6 C (96.1 F)
1856
36.7 C (98.1 F)
1857
34.4 C (93.9 F)
1858
35.0 C (95.0 F)
1859
35.0 C (95.0 F)
1860
37.2 C (99.0 F)
1861
38.9 C (102.0 F)
1862
37.8 C (100.0 F)
1863
36.7 C (98.1 F)
1871
n/a
1872
n/a
1873
n/a
1874
n/a
1875
n/a
1876
36.7 C (98.1 F)
1877
37.8 C (100.0 F)
1878
36.1 C (97.0 F)
1879
40.0 C (104.0 F)
1880
37.8 C (100.0 F)
1881
35.8 C (96.4 F)
1882
36.1 C (97.0 F)
1883
38.3 C (100.9 F)
1884
35.0 C (95.0 F)
1885
35.8 C (96.4 F)
1886
34.4 C (93.9 F)
1887
37.6 C (99.7 F)
1888
37.9 C (100.2 F)
1889
36.1 C (97.0 F)
1890
36.7 C (98.1 F)
1891
35.0 C (95.0 F)
1892
35.0 C (95.0 F)
Coldest night (TNn)
The coldest night of the year at Charleston, 1845 to 1892. The record is -11.9 C (10.6 F) in 1886, marked on the chart; the median year is -4.4 C (24.1 F).
Coldest night (TNn) at Charleston by year
Year
Coldest night (TNn)
1845
-6.7 C (19.9 F)
1846
-1.1 C (30.0 F)
1847
-3.9 C (25.0 F)
1848
0.0 C (32.0 F)
1849
-5.6 C (21.9 F)
1850
-3.9 C (25.0 F)
1851
-6.7 C (19.9 F)
1852
-8.9 C (16.0 F)
1853
-3.3 C (26.1 F)
1854
-4.4 C (24.1 F)
1855
-3.3 C (26.1 F)
1856
-8.9 C (16.0 F)
1857
-11.1 C (12.0 F)
1858
-3.3 C (26.1 F)
1859
-4.4 C (24.1 F)
1860
-5.6 C (21.9 F)
1861
-2.8 C (27.0 F)
1862
-6.1 C (21.0 F)
1863
-6.1 C (21.0 F)
1871
n/a
1872
n/a
1873
n/a
1874
n/a
1875
n/a
1876
-5.0 C (23.0 F)
1877
-3.3 C (26.1 F)
1878
-3.9 C (25.0 F)
1879
-5.0 C (23.0 F)
1880
-10.6 C (12.9 F)
1881
-3.3 C (26.1 F)
1882
-4.4 C (24.1 F)
1883
-3.9 C (25.0 F)
1884
-10.6 C (12.9 F)
1885
-5.6 C (21.9 F)
1886
-11.9 C (10.6 F)
1887
-8.5 C (16.7 F)
1888
-3.3 C (26.1 F)
1889
-3.3 C (26.1 F)
1890
-3.9 C (25.0 F)
1891
-1.7 C (28.9 F)
1892
-5.0 C (23.0 F)
Wettest day (Rx1day)
The wettest day of the year at Charleston, 1845 to 1892. The record is 210.8 mm (8.3 in) in 1877, marked on the chart; the median year is 87.1 mm (3.4 in).
Wettest day (Rx1day) at Charleston by year
Year
Wettest day (Rx1day)
1845
174.0 mm (6.9 in)
1846
78.7 mm (3.1 in)
1847
116.8 mm (4.6 in)
1848
170.2 mm (6.7 in)
1849
127.0 mm (5.0 in)
1850
36.8 mm (1.4 in)
1851
114.3 mm (4.5 in)
1852
117.3 mm (4.6 in)
1853
165.1 mm (6.5 in)
1854
83.8 mm (3.3 in)
1855
76.2 mm (3.0 in)
1856
76.2 mm (3.0 in)
1857
64.8 mm (2.6 in)
1858
57.4 mm (2.3 in)
1859
106.7 mm (4.2 in)
1860
81.3 mm (3.2 in)
1861
86.6 mm (3.4 in)
1862
67.1 mm (2.6 in)
1863
106.7 mm (4.2 in)
1871
40.6 mm (1.6 in)
1872
87.1 mm (3.4 in)
1873
67.6 mm (2.7 in)
1874
98.8 mm (3.9 in)
1875
70.6 mm (2.8 in)
1876
156.2 mm (6.1 in)
1877
210.8 mm (8.3 in)
1878
n/a
1879
n/a
1880
n/a
1881
62.5 mm (2.5 in)
1882
105.9 mm (4.2 in)
1883
129.0 mm (5.1 in)
1884
138.2 mm (5.4 in)
1885
127.0 mm (5.0 in)
1886
74.9 mm (2.9 in)
1887
77.5 mm (3.1 in)
1888
99.6 mm (3.9 in)
1889
79.8 mm (3.1 in)
1890
n/a
1891
n/a
1892
n/a
Wettest five days (Rx5day)
The wettest five days of the year at Charleston, 1845 to 1892. The record is 329.4 mm (13.0 in) in 1876, marked on the chart; the median year is 132.6 mm (5.2 in).
Wettest five days (Rx5day) at Charleston by year
Year
Wettest five days (Rx5day)
1845
184.4 mm (7.3 in)
1846
87.7 mm (3.5 in)
1847
135.8 mm (5.3 in)
1848
183.9 mm (7.2 in)
1849
128.6 mm (5.1 in)
1850
68.6 mm (2.7 in)
1851
196.8 mm (7.7 in)
1852
215.8 mm (8.5 in)
1853
186.5 mm (7.3 in)
1854
165.0 mm (6.5 in)
1855
113.0 mm (4.4 in)
1856
132.6 mm (5.2 in)
1857
107.9 mm (4.2 in)
1858
121.6 mm (4.8 in)
1859
222.3 mm (8.8 in)
1860
109.0 mm (4.3 in)
1861
138.9 mm (5.5 in)
1862
110.0 mm (4.3 in)
1863
151.9 mm (6.0 in)
1871
54.6 mm (2.1 in)
1872
123.8 mm (4.9 in)
1873
124.2 mm (4.9 in)
1874
123.2 mm (4.9 in)
1875
154.2 mm (6.1 in)
1876
329.4 mm (13.0 in)
1877
232.6 mm (9.2 in)
1878
n/a
1879
n/a
1880
n/a
1881
120.0 mm (4.7 in)
1882
134.7 mm (5.3 in)
1883
176.7 mm (7.0 in)
1884
220.3 mm (8.7 in)
1885
215.3 mm (8.5 in)
1886
102.9 mm (4.1 in)
1887
113.5 mm (4.5 in)
1888
120.6 mm (4.7 in)
1889
123.5 mm (4.9 in)
1890
n/a
1891
n/a
1892
n/a
Longest dry spell (CDD)
The longest dry spell of the year at Charleston, 1845 to 1892. The record is 43 days in 1886, marked on the chart; the median year is 22 days.
Longest dry spell (CDD) at Charleston by year
Year
Longest dry spell (CDD)
1845
31 days
1846
19 days
1847
30 days
1848
21 days
1849
29 days
1850
28 days
1851
34 days
1852
30 days
1853
29 days
1854
36 days
1855
28 days
1856
30 days
1857
19 days
1858
21 days
1859
27 days
1860
21 days
1861
30 days
1862
22 days
1863
20 days
1871
11 days
1872
21 days
1873
13 days
1874
13 days
1875
30 days
1876
24 days
1877
12 days
1878
n/a
1879
n/a
1880
n/a
1881
12 days
1882
28 days
1883
22 days
1884
15 days
1885
9 days
1886
43 days
1887
21 days
1888
13 days
1889
13 days
1890
n/a
1891
n/a
1892
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.
Frost Dates and Growing Season
28 years with a frost
Across 28 years with a frost, the median last spring frost at Charleston falls on 19 February and the median first autumn frost on 28 November, which leaves a median of 291 days between them.
Fitted over all years, the growing season changes by -0.6 days per decade at this station.
Frost dates and growing season at Charleston
Measure
Median, all years
Earliest period
Recent period (1845 to 1892)
Recent against earliest
Fitted trend
Last spring frost
19 February
n/a
19 February
n/a
+0.3 days per decade
First autumn frost
28 November
n/a
28 November
n/a
-0.3 days per decade
Growing days
291 days
n/a
291 days
n/a
-0.6 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
30 years, 1845 to 1888
A day with at least 94.3 mm (3.7 in) of rain is expected about once in 2 years. A day with at least 211.9 mm (8.3 in) of rain is expected about once in 100 years.
Rainfall return levels at Charleston: the daily rain expected about once in a given number of years
Expected about once in
A day with at least
Note
2 years
94.3 mm (3.7 in)
5 years
126.2 mm (5.0 in)
10 years
147.1 mm (5.8 in)
25 years
173.4 mm (6.8 in)
50 years
192.8 mm (7.6 in)
Longer than the 30 years of record
100 years
211.9 mm (8.3 in)
Longer than the 30 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, 30 years of values from 1845 to 1888.
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: 174.0 mm (6.9 in) in 1845; 170.2 mm (6.7 in) in 1848; 165.1 mm (6.5 in) in 1853.
Download the Data
Data for Charleston standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Charleston 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.