Wilmington, NC

North Carolina · Records since 1874–2026

⛅ 91°F Feels like 102°
Currently in Wilmington
As of 2:30 PM EDT
🔥 4° below today's record of 95°F

Records for September 11

🔥 Record High

95°F

September 11, 1983

+10° from 85° normal

❄ Record Low

51°F

September 11, 1956

-17° from 68° normal
🌞 Normal high: 85°F 🌑 Normal low: 68°F 1991–2020 normals

All-Time Records — Wilmington

🔥
104°F
Hottest Day Ever
Jun 27, 1952
❄
0°F
Coldest Day Ever
Dec 25, 1989
🌧
13.38"
Wettest Day Ever
Sep 15, 1999
☃
11.1"
Most Snow in One Day
Feb 18, 1896

First & Last Dates — Wilmington

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)
301 days
Longest growing season
1909
192 days
Shortest growing season
2001
245 days
Normal growing season
1991–2020 average

Top 10 Record Highs — September 11

# Temp Date
🏆 95°F September 11, 1983
2 94°F September 11, 1915
3 93°F September 11, 2002
4 93°F September 11, 1942
5 93°F September 11, 1894
6 92°F September 11, 2016
7 92°F September 11, 2007
8 92°F September 11, 1990
9 92°F September 11, 1985
10 92°F September 11, 1965

Top 5 Record Lows — September 11

# Temp Date
🥶 51°F September 11, 1956
2 53°F September 11, 1976
3 54°F September 11, 1917
4 55°F September 11, 1972
5 55°F September 11, 1913
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 1874–2026. Climate normals represent the 1991–2020 average.

Heat Wave Summary — Wilmington

threshold: 93°F (90th percentile of historical Jun–Aug highs)
4.2
Avg heat wave length
days (historical)
97°
Avg peak temp
during heat waves
87
Dangerous nights 2026
Overnights ≥ 70°F
7
Heat waves 2026
so far

Days ≥ 90°F Per Year

1874–2026
64
2026 so far
36
Avg/year 1970–2025
54
Avg/year (last 10 complete)
77
Most in a year (2019)

Average Daily High by Decade

Full year · complete decades only

Longest Heat Waves — Wilmington

# Dates Days Peak Avg High Avg Overnight Low
🏆 Jul 31, 1980 – Aug 12, 1980 13 101°F (Aug 1) 97°F 76°F
2 Aug 14, 1968 – Aug 26, 1968 13 100°F (Aug 21) 96°F 75°F
3 Jul 12, 2019 – Jul 22, 2019 11 97°F (Jul 18) 95°F 77°F
4 Jul 5, 1977 – Jul 14, 1977 10 102°F (Jul 7) 97°F 75°F
5 Jun 13, 2015 – Jun 22, 2015 10 100°F (Jun 16) 96°F 76°F
6 Jun 30, 1991 – Jul 9, 1991 10 97°F (Jul 8) 95°F 75°F
7 Jul 16, 2012 – Jul 24, 2012 9 100°F (Jul 24) 95°F 77°F
8 Jul 7, 1986 – Jul 15, 1986 9 99°F (Jul 8) 97°F 76°F
9 Jul 14, 1983 – Jul 22, 1983 9 98°F (Jul 16) 96°F 78°F
10 Jul 26, 2022 – Aug 3, 2022 9 97°F (Aug 1) 95°F 80°F

Heat Waves Per Year

Warm Summer Nights (Jun–Aug)

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

62
2026 total
above-normal nights
39.5
Avg / summer
1970–2020
67
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 (1871–2026)

Blue = above average · tan = below average · gold = 2026 (partial)
Since 1871, annual totals have trended +0.73" per decade, about +11.2" 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 Wilmington is tracking against normal, year to date

Daily High Temperature vs Normal

Above normal Below normal

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

Precipitation, Year to Date

37.03"
2026 YTD
Normal: 42.63"
-5.60"
2.43"
September so far
September normal: 8.69"
-6.26"
9
2026 heavy rain days
Days with ≥ 1.0"

Accumulation vs. Normal

Running total since Jan 1 against the normal pace for the same date · Wilmington is 5.60" behind the normal pace

Period Review — Jun 1 – Aug 31, 2026

Any window, evaluated against every other year on record — 92 days

Quick picks: Last 7 days Last 30 days Last 90 days This month
Seasons: Spring (Mar–May) Summer (Jun–Aug) Fall (Sep–Nov)
81.7°F
Average temperature
3rd-warmest of 153
+2.0°
vs. average
Normal: 79.8°F (1991–2020)
22.94"
Precipitation
43rd-wettest of 156
+2.25"
vs. average
Normal: 20.69" · 111% of normal

Average Temperature by Year — Jun 1 – Aug 31

1874–2026 · 2026 highlighted · trend +0.15° per decade (warming since 1874)

Precipitation by Year — Jun 1 – Aug 31

1871–2026 · 2026 highlighted · trend +0.20" per decade (wetter since 1871)

Warmest Jun 1 – Aug 31 on Record

# Year Avg Temp
1 2010 81.8°F
2 2011 81.8°F
3 2026 81.7°F
4 2016 81.5°F
5 2022 81.1°F
6 1999 81.1°F
7 2015 81.0°F
8 1952 80.9°F
9 2019 80.8°F
10 1998 80.8°F

Coolest Jun 1 – Aug 31 on Record

# Year Avg Temp
1 1927 76.5°F
2 1946 76.5°F
3 1929 76.8°F
4 1997 76.9°F
5 1919 76.9°F
6 1910 76.9°F
7 1918 77.0°F
8 1889 77.1°F
9 1894 77.1°F
10 1920 77.2°F

Wettest Jun 1 – Aug 31 on Record

# Year Total
1 1886 34.31"
2 1946 33.74"
3 1945 33.22"
4 1965 32.05"
5 2021 31.18"
6 2018 30.94"
7 1966 30.57"
8 1976 30.55"
9 2006 30.33"
10 1950 29.38"

Driest Jun 1 – Aug 31 on Record

# Year Total
1 1900 7.57"
2 1902 8.50"
3 1954 8.83"
4 1909 9.63"
5 1979 10.04"
6 1914 11.18"
7 1932 11.29"
8 1912 11.51"
9 1980 11.62"
10 1934 11.79"
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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