Aiken, SC

South Carolina · Records since 1893–2026

🌤️ 94°F Feels like 100°
Currently in Aiken
As of 2:30 PM EDT
🔥 6° below today's record of 100°F

Records for September 11

🔥 Record High

100°F

September 11, 1925

+13° from 87° normal

❄ Record Low

49°F

September 11, 1976

-17° from 66° normal
🌞 Normal high: 87°F 🌑 Normal low: 66°F 1991–2020 normals

All-Time Records — Aiken

🔥
109°F
Hottest Day Ever
Aug 22, 1983
❄
-4°F
Coldest Day Ever
Jan 21, 1985
🌧
9.68"
Wettest Day Ever
Apr 16, 1969
☃
15.0"
Most Snow in One Day
Feb 10, 1973

First & Last Dates — Aiken

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)
323 days
Longest growing season
1918
181 days
Shortest growing season
2001
220 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, 2002
3 98°F September 11, 1990
4 98°F September 11, 1915
5 96°F September 11, 1983
6 95°F September 11, 2019
7 95°F September 11, 1985
8 95°F September 11, 1954
9 95°F September 11, 1939
10 95°F September 11, 1927

Top 5 Record Lows — September 11

# Temp Date
🥶 49°F September 11, 1976
2 50°F September 11, 1998
3 50°F September 11, 1969
4 51°F September 11, 1982
5 51°F September 11, 1956
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 1893–2026. Climate normals represent the 1991–2020 average.

Heat Wave Summary — Aiken

threshold: 98°F (90th percentile of historical Jun–Aug highs)
4.8
Avg heat wave length
days (historical)
102°
Avg peak temp
during heat waves
58
Dangerous nights 2026
Overnights ≥ 70°F
0
Heat waves 2026
so far

Days ≥ 90°F Per Year

1902–2026
60
2026 so far
71
Avg/year 1970–2025
64
Avg/year (last 10 complete)
156
Most in a year (1902)

Average Daily High by Decade

Full year · complete decades only

Longest Heat Waves — Aiken

# Dates Days Peak Avg High Avg Overnight Low
🏆 Jul 3, 1993 – Jul 23, 1993 21 102°F (Jul 3) 100°F 72°F
2 Jul 7, 1986 – Jul 22, 1986 16 108°F (Jul 21) 103°F 73°F
3 Jun 28, 1990 – Jul 12, 1990 15 104°F (Jul 11) 101°F 70°F
4 Jul 11, 1902 – Jul 23, 1902 13 104°F (Jul 18) 100°F 60°F
5 Jun 29, 1902 – Jul 9, 1902 11 104°F (Jul 5) 101°F 60°F
6 Jul 6, 1977 – Jul 16, 1977 11 104°F (Jul 8) 100°F 71°F
7 May 24, 1902 – Jun 3, 1902 11 103°F (May 28) 100°F 67°F
8 Jun 23, 1954 – Jul 2, 1954 10 108°F (Jun 27) 102°F 71°F
9 Sep 2, 1925 – Sep 11, 1925 10 106°F (Sep 4) 101°F 74°F
10 Jun 22, 1998 – Jul 1, 1998 10 103°F (Jun 28) 101°F 72°F

Heat Waves Per Year

Warm Summer Nights (Jun–Aug)

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

51
2026 total
above-normal nights
41.6
Avg / summer
1970–2020
87
Most in a summer
2018

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 (1893–2026)

Blue = above average · tan = below average · gold = 2026 (partial)
Since 1893, annual totals have trended +0.59" per decade, about +7.8" 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 Aiken is tracking against normal, year to date

Daily High Temperature vs Normal

Above normal Below normal

90 of 168 days with data were above the 1991–2020 normal high for their date.

Precipitation, Year to Date

28.52"
2026 YTD
Normal: 0.00"
+28.52"
0.00"
September so far
12
2026 heavy rain days
Days with ≥ 1.0"

Accumulation vs. Normal

Running total since Jan 1 against the normal pace for the same date · Aiken is 28.52" ahead of 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)
2026 is still under way for this window — totals and rankings appear once September 10 passes.

Average Temperature by Year — Sep 1 – Sep 10

1902–2023 · 2026 highlighted · trend -0.14° per decade (cooling since 1902)

Precipitation by Year — Sep 1 – Sep 10

1902–2021 · 2026 highlighted · trend +0.04" per decade (wetter since 1902)

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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