Charleston, WV

West Virginia · Records since 1892–2026

☁️ 76°F Feels like 83°
Currently in Charleston
As of 2:30 PM EDT

Records for September 11

🔥 Record High

100°F

September 11, 1925

+19° from 81° normal

❄ Record Low

41°F

September 11, 1917

-18° from 59° normal
🌞 Normal high: 81°F 🌑 Normal low: 59°F 1991–2020 normals

All-Time Records — Charleston

🔥
108°F
Hottest Day Ever
Jul 4, 1931
❄
-17°F
Coldest Day Ever
Dec 30, 1917
🌧
5.60"
Wettest Day Ever
Jul 19, 1961
☃
17.1"
Most Snow in One Day
Mar 13, 1993

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)
226 days
Longest growing season
1910
142 days
Shortest growing season
1947
186 days
Normal growing season
1991–2020 average

Top 10 Record Highs — September 11

# Temp Date
🏆 100°F September 11, 1925
2 98°F September 11, 1931
3 98°F September 11, 1903
4 96°F September 11, 1919
5 95°F September 11, 2019
6 95°F September 11, 1983
7 93°F September 11, 1952
8 93°F September 11, 1933
9 92°F September 11, 2024
10 92°F September 11, 1964

Top 5 Record Lows — September 11

# Temp Date
🥶 41°F September 11, 1917
2 41°F September 11, 1902
3 41°F September 11, 1892
4 44°F September 11, 1958
5 44°F September 11, 1943
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 1892–2026. Climate normals represent the 1991–2020 average.

Heat Wave Summary — Charleston

threshold: 93°F (90th percentile of historical Jun–Aug highs)
4.6
Avg heat wave length
days (historical)
98°
Avg peak temp
during heat waves
28
Dangerous nights 2026
Overnights ≥ 70°F
2
Heat waves 2026
so far

Days ≥ 90°F Per Year

1892–2026
21
2026 so far
31
Avg/year 1970–2025
32
Avg/year (last 10 complete)
96
Most in a year (1930)

Average Daily High by Decade

Full year · complete decades only

Longest Heat Waves — Charleston

# Dates Days Peak Avg High Avg Overnight Low
🏆 Jul 18, 1930 – Aug 11, 1930 25 106°F (Jul 21) 100°F 65°F
2 Aug 3, 1918 – Aug 14, 1918 12 108°F (Aug 6) 100°F 69°F
3 Jul 27, 1931 – Aug 7, 1931 12 102°F (Aug 3) 98°F 68°F
4 Jul 8, 1936 – Jul 18, 1936 11 102°F (Jul 10) 98°F 69°F
5 Aug 8, 1988 – Aug 18, 1988 11 101°F (Aug 17) 96°F 68°F
6 Jul 18, 1934 – Jul 27, 1934 10 106°F (Jul 22) 101°F 67°F
7 Jun 20, 1934 – Jun 29, 1934 10 102°F (Jun 28) 97°F 66°F
8 Aug 26, 1953 – Sep 4, 1953 10 102°F (Sep 2) 98°F 63°F
9 Sep 7, 1903 – Sep 16, 1903 10 100°F (Sep 14) 98°F 61°F
10 Jun 26, 1913 – Jul 5, 1913 10 95°F (Jul 1) 94°F 72°F

Heat Waves Per Year

Warm Summer Nights (Jun–Aug)

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

60
2026 total
above-normal nights
45.0
Avg / summer
1970–2020
74
Most in a summer
2010

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 (1892–2026)

Blue = above average · tan = below average · gold = 2026 (partial)
Since 1892, annual totals have trended +0.32" per decade, about +4.3" 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

135 of 253 days with data were above the 1991–2020 normal high for their date.

Precipitation, Year to Date

33.93"
2026 YTD
Normal: 34.29"
-0.36"
0.34"
September so far
September normal: 3.46"
-3.12"
6
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 0.36" behind the normal pace

Period Review — Sep 1 – Sep 10, 2026

Any window, evaluated against every other year on record — 10 days

Quick picks: Last 7 days Last 30 days Last 90 days This month
Seasons: Spring (Mar–May) Summer (Jun–Aug) Fall (Sep–Nov)
78.2°F
Average temperature
6th-warmest of 123
+6.5°
vs. average
Normal: 71.7°F (1991–2020)
0.34"
Precipitation
39th-driest of 127
-0.81"
vs. average
Normal: 1.15" · 30% of normal

Average Temperature by Year — Sep 1 – Sep 10

1892–2026 · 2026 highlighted · trend -0.18° per decade (cooling since 1892)

Precipitation by Year — Sep 1 – Sep 10

1892–2026 · 2026 highlighted · trend +0.01" per decade (wetter since 1892)

Warmest Sep 1 – Sep 10 on Record

# Year Avg Temp
1 1912 79.2°F
2 1985 79.1°F
3 1961 79.1°F
4 1929 79.0°F
5 1922 78.4°F
6 2026 78.2°F
7 1925 78.2°F
8 1941 77.6°F
9 2018 77.2°F
10 2015 77.0°F

Coolest Sep 1 – Sep 10 on Record

# Year Avg Temp
1 2017 63.9°F
2 1967 64.0°F
3 1988 65.0°F
4 1974 65.0°F
5 1994 65.1°F
6 2025 65.8°F
7 1909 66.5°F
8 1972 66.6°F
9 1976 66.6°F
10 1997 66.6°F

Wettest Sep 1 – Sep 10 on Record

# Year Total
1 2018 5.83"
2 1910 4.47"
3 1909 4.10"
4 2014 3.59"
5 1950 3.15"
6 2011 3.07"
7 2004 2.98"
8 1941 2.68"
9 1914 2.60"
10 1951 2.60"

Driest Sep 1 – Sep 10 on Record

# Year Total
1 2005 0.00"
2 2002 0.00"
3 1995 0.00"
4 1964 0.00"
5 1955 0.00"
6 1903 0.00"
7 1959 0.03"
8 2024 0.04"
9 1949 0.04"
10 1905 0.04"
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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