Mount Mitchell, NC

North Carolina · Records since 1925–2026

🌤️ 65°F
Currently in Mount Mitchell
As of 2:30 PM EDT

Records for September 11

🔥 Record High

77°F

September 11, 1925

+15° from 62° normal

❄ Record Low

34°F

September 11, 1993

-13° from 47° normal
🌞 Normal high: 62°F 🌑 Normal low: 47°F 1991–2020 normals

All-Time Records — Mount Mitchell

🔥
87°F
Hottest Day Ever
Jul 3, 1925
❄
-34°F
Coldest Day Ever
Jan 21, 1985
🌧
16.50"
Wettest Day Ever
Sep 8, 2004
☃
36.0"
Most Snow in One Day
Mar 13, 1993

First & Last Dates — Mount Mitchell

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)
169 days
Longest growing season
1955
92 days
Shortest growing season
1985
143 days
Normal growing season
1991–2020 average

Top 10 Record Highs — September 11

# Temp Date
🏆 77°F September 11, 1925
2 73°F September 11, 1928
3 72°F September 11, 2019
4 72°F September 11, 2002
5 72°F September 11, 2000
6 72°F September 11, 1934
7 70°F September 11, 2016
8 70°F September 11, 2007
9 70°F September 11, 1983
10 70°F September 11, 1961

Top 5 Record Lows — September 11

# Temp Date
🥶 34°F September 11, 1993
2 34°F September 11, 1949
3 34°F September 11, 1940
4 36°F September 11, 2017
5 39°F September 11, 1952
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 1925–2026. Climate normals represent the 1991–2020 average.

Heat Wave Summary — Mount Mitchell

threshold: 72°F (90th percentile of historical Jun–Aug highs)
4.3
Avg heat wave length
days (historical)
75°
Avg peak temp
during heat waves
0
Dangerous nights 2026
Overnights ≥ 70°F
6
Heat waves 2026
so far

Average Daily High by Decade

Full year · complete decades only

Longest Heat Waves — Mount Mitchell

# Dates Days Peak Avg High Avg Overnight Low
🏆 Jul 25, 1987 – Aug 6, 1987 13 75°F (Jul 25) 74°F 58°F
2 Sep 1, 1925 – Sep 12, 1925 12 81°F (Sep 5) 77°F 56°F
3 Aug 15, 2007 – Aug 26, 2007 12 78°F (Aug 17) 75°F 57°F
4 Jul 19, 2005 – Jul 28, 2005 10 80°F (Jul 27) 75°F 56°F
5 Jul 2, 1993 – Jul 11, 1993 10 75°F (Jul 6) 74°F 57°F
6 Aug 23, 1998 – Sep 1, 1998 10 75°F (Aug 24) 74°F 57°F
7 Jul 12, 1980 – Jul 20, 1980 9 78°F (Jul 17) 74°F 61°F
8 Jul 28, 1931 – Aug 4, 1931 8 78°F (Jul 30) 75°F 59°F
9 Jun 26, 1954 – Jul 3, 1954 8 77°F (Jun 27) 74°F 52°F
10 Sep 12, 1998 – Sep 19, 1998 8 77°F (Sep 15) 75°F 55°F

Heat Waves Per Year

Warm Summer Nights (Jun–Aug)

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

71
2026 total
above-normal nights
57.2
Avg / summer
1970–2020
83
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 (1925–2026)

Blue = above average · tan = below average · gold = 2026 (partial)
Since 1925, annual totals have trended +2.30" per decade, about +23.0" 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 Mount Mitchell is tracking against normal, year to date

Daily High Temperature vs Normal

Above normal Below normal

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

Precipitation, Year to Date

34.86"
2026 YTD
Normal: 56.04"
-21.18"
0.92"
September so far
September normal: 8.76"
-7.84"
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 · Mount Mitchell is 21.18" behind the normal pace

Period Review — Sep 3 – Sep 10, 2026

Any window, evaluated against every other year on record — 8 days

Quick picks: Last 7 days Last 30 days Last 90 days This month
Seasons: Spring (Mar–May) Summer (Jun–Aug) Fall (Sep–Nov)
62.6°F
Average temperature
3rd-warmest of 83
+5.6°
vs. average
Normal: 57.0°F (1991–2020)
0.92"
Precipitation
40th-driest of 81
-1.27"
vs. average
Normal: 2.19" · 42% of normal

Average Temperature by Year — Sep 3 – Sep 10

1925–2026 · 2026 highlighted · trend -0.06° per decade (cooling since 1925)

Precipitation by Year — Sep 3 – Sep 10

1925–2026 · 2026 highlighted

Warmest Sep 3 – Sep 10 on Record

# Year Avg Temp
1 1925 67.2°F
2 1954 64.4°F
3 2026 62.6°F
4 1985 62.3°F
5 1990 62.1°F
6 1941 61.6°F
7 1947 61.2°F
8 2007 61.2°F
9 1999 61.1°F
10 2002 61.1°F

Coolest Sep 3 – Sep 10 on Record

# Year Avg Temp
1 2017 47.4°F
2 1952 50.4°F
3 1950 50.6°F
4 1984 51.6°F
5 1988 51.7°F
6 2025 51.8°F
7 1994 52.0°F
8 1953 52.2°F
9 1949 52.9°F
10 2024 52.9°F

Wettest Sep 3 – Sep 10 on Record

# Year Total
1 2004 24.25"
2 1987 9.78"
3 1948 8.04"
4 1996 7.65"
5 1935 6.53"
6 1933 6.32"
7 2011 6.30"
8 1959 5.95"
9 2014 4.86"
10 2022 4.11"

Driest Sep 3 – Sep 10 on Record

# Year Total
1 2005 0.00"
2 1984 0.00"
3 2007 0.02"
4 2016 0.03"
5 2024 0.04"
6 1963 0.04"
7 2019 0.05"
8 1990 0.06"
9 2002 0.07"
10 1943 0.09"
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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