Charleston, SC

South Carolina · Records since 1937–2026

☁️ 68°F Feels like 64°
Currently in Charleston
As of 7:00 PM EST

Records for November 12

🔥 Record High

84°F

November 12, 1989

+14° from 70° normal

❄ Record Low

27°F

November 12, 1943

-21° from 48° normal
🌞 Normal high: 70°F 🌑 Normal low: 48°F 1991–2020 normals

All-Time Records — Charleston

🔥
105°F
Hottest Day Ever
Aug 1, 1999
❄
6°F
Coldest Day Ever
Jan 21, 1985
🌧
11.50"
Wettest Day Ever
Oct 3, 2015
☃
6.0"
Most Snow in One Day
Dec 23, 1989

First & Last Dates — Charleston

How early and how late each seasonal turning point has ever arrived, across the full period of record

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Range ever recorded Normal date (1991–2020)
317 days
Longest growing season
2023
203 days
Shortest growing season
1962
269 days
Normal growing season
1991–2020 average

Top 10 Record Highs — November 12

# Temp Date
🏆 84°F November 12, 1989
2 81°F November 12, 2003
3 81°F November 12, 1966
4 80°F November 12, 2022
5 80°F November 12, 2012
6 80°F November 12, 1940
7 79°F November 12, 2015
8 79°F November 12, 2014
9 79°F November 12, 1985
10 79°F November 12, 1975

Top 5 Record Lows — November 12

# Temp Date
🥶 27°F November 12, 1943
2 28°F November 12, 1941
3 30°F November 12, 1987
4 30°F November 12, 1942
5 31°F November 12, 2011
About this data — Records are sourced from the NOAA Threadex dataset via RCC ACIS, a quality-controlled record for long-term climate stations. Threadex adjusts for station relocations and observation-time changes, making records comparable across all years since 1937–2026. Climate normals represent the 1991–2020 average.

Heat Wave Summary — Charleston

threshold: 95°F (90th percentile of historical Jun–Aug highs)
4.2
Avg heat wave length
days (historical)
98°
Avg peak temp
during heat waves
118
Dangerous nights 2026
Overnights ≥ 70°F
6
Heat waves 2026
so far

Days ≥ 90°F Per Year

1937–2026
89
2026 so far
58
Avg/year 1970–2025
74
Avg/year (last 10 complete)
98
Most in a year (2016)

Average Daily High by Decade

Full year · complete decades only

Longest Heat Waves — Charleston

# Dates Days Peak Avg High Avg Overnight Low
🏆 Jul 7, 1986 – Jul 21, 1986 15 104°F (Jul 19) 100°F 78°F
2 Jul 3, 2016 – Jul 15, 2016 13 100°F (Jul 8) 97°F 77°F
3 Aug 10, 2026 – Aug 20, 2026 11 99°F (Aug 13) 97°F 76°F
4 Jun 13, 2015 – Jun 22, 2015 10 99°F (Jun 16) 97°F 77°F
5 Jul 4, 2026 – Jul 12, 2026 9 100°F (Jul 9) 97°F 76°F
6 Jul 26, 1999 – Aug 2, 1999 8 105°F (Aug 1) 99°F 77°F
7 May 24, 2019 – May 31, 2019 8 101°F (May 28) 99°F 74°F
8 Jun 21, 1950 – Jun 28, 1950 8 99°F (Jun 27) 97°F 75°F
9 Aug 12, 1995 – Aug 18, 1995 7 102°F (Aug 14) 99°F 76°F
10 Jun 24, 1952 – Jun 30, 1952 7 101°F (Jun 26) 98°F 75°F

Heat Waves Per Year

Warm Summer Nights (Jun–Aug)

Nights where the overnight low exceeded the 1991–2020 normal low

65
2026 total
above-normal nights
40.4
Avg / summer
1970–2020
79
Most in a summer
2016

Above-Normal Summer Nights Per Year

Average June–August Low by Decade

Overnight lows · complete decades only

Precipitation

Annual totals and trend across the full period of record · see this year's standing →

Monthly Precipitation — Last 24 Months

Blue = actual · dashed line = monthly normal

Annual Precipitation Per Year (1937–2026)

Blue = above average · tan = below average · gold = 2026 (partial)
Since 1937, annual totals have trended +0.27" per decade, about +2.4" across the record.

Heavy Rain Days Per Year (≥ 1.0")

Compare year-to-year changes in days with heavy rainfall (≥ 1.0")

This Year — 2026

How Charleston is tracking against normal, year to date

Daily High Temperature vs Normal

Above normal Below normal

201 of 314 days with data were above the 1991–2020 normal high for their date.

Precipitation, Year to Date

28.09"
2026 YTD
Normal: 47.38"
-19.29"
0.10"
November so far
November normal: 2.66"
-2.56"
8
2026 heavy rain days
Days with ≥ 1.0"

Accumulation vs. Normal

Running total since Jan 1 against the normal pace for the same date · Charleston is 19.29" behind the normal pace

Period Review — Aug 12 – Nov 10, 2026

Any window, evaluated against every other year on record — 91 days

Quick picks: Last 7 days Last 30 days Last 90 days This month
Seasons: Spring (Mar–May) Summer (Jun–Aug) Fall (Sep–Nov)
75.3°F
Average temperature
3rd-warmest of 90
+2.3°
vs. average
Normal: 73.0°F (1991–2020)
10.90"
Precipitation
28th-driest of 90
-5.16"
vs. average
Normal: 16.06" · 68% of normal

Average Temperature by Year — Aug 12 – Nov 10

1937–2026 · 2026 highlighted · trend +0.36° per decade (warming since 1937)

Precipitation by Year — Aug 12 – Nov 10

1937–2026 · 2026 highlighted · trend +0.45" per decade (wetter since 1937)

Warmest Aug 12 – Nov 10 on Record

# Year Avg Temp
1 2018 76.7°F
2 2016 75.4°F
3 1990 75.3°F
4 2026 75.3°F
5 2020 74.9°F
6 2019 74.9°F
7 2017 74.6°F
8 2007 74.5°F
9 2005 74.5°F
10 1973 74.3°F

Coolest Aug 12 – Nov 10 on Record

# Year Avg Temp
1 1967 67.3°F
2 1976 67.8°F
3 1940 69.4°F
4 1952 69.5°F
5 1957 69.6°F
6 1943 69.8°F
7 1937 69.8°F
8 1956 69.9°F
9 1955 69.9°F
10 1974 69.9°F

Wettest Aug 12 – Nov 10 on Record

# Year Total
1 2015 38.44"
2 1989 26.69"
3 2002 26.35"
4 1945 24.99"
5 1959 24.30"
6 1994 23.54"
7 1987 23.35"
8 2016 23.26"
9 2008 22.97"
10 1995 22.77"

Driest Aug 12 – Nov 10 on Record

# Year Total
1 1967 4.08"
2 1980 4.94"
3 1966 5.16"
4 2024 5.42"
5 1972 5.75"
6 1978 6.72"
7 2001 7.15"
8 1942 7.18"
9 1939 7.62"
10 2018 7.79"
About this data. Pick any start and end date and this becomes the same kind of review as the Month and Fall tabs, just for exactly the window you asked for — the generalized version of the same engine, evaluated across every year on record. Average temperature is the mean of each day's (high + low) / 2; precipitation is the sum of daily totals. A year missing more than about a fifth of the window's days is excluded from the temperature ranking; any missing day excludes a year from the precipitation ranking, since an unreported day is unreported rain. Ranges that cross from December into January aren't supported yet. Normals are the 1991–2020 mean for the same window.
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