Bristol-Johnson City, TN

Tennessee · Records since 1937–2026

⛅ 81°F
Currently in Bristol-Johnson City
As of 2:15 PM EDT

Records for September 7

🔥 Record High

100°F

September 7, 1954

+17° from 83° normal

❄ Record Low

45°F

September 7, 2017

-14° from 59° normal
🌞 Normal high: 83°F 🌑 Normal low: 59°F 1991–2020 normals

All-Time Records — Bristol-Johnson City

🔥
103°F
Hottest Day Ever
Jun 30, 2012
❄
-21°F
Coldest Day Ever
Jan 21, 1985
🌧
3.65"
Wettest Day Ever
Oct 16, 1964
☃
16.2"
Most Snow in One Day
Nov 21, 1952

Top 10 Record Highs — September 7

# Temp Date
🏆 100°F September 7, 1954
2 93°F September 7, 2007
3 92°F September 7, 1990
4 91°F September 7, 2018
5 91°F September 7, 2016
6 91°F September 7, 2002
7 91°F September 7, 1998
8 91°F September 7, 1964
9 90°F September 7, 1999
10 90°F September 7, 1980

Top 5 Record Lows — September 7

# Temp Date
🥶 45°F September 7, 2017
2 47°F September 7, 1988
3 47°F September 7, 1984
4 50°F September 7, 2025
5 50°F September 7, 1968
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 — Bristol-Johnson City

threshold: 91°F (90th percentile of historical Jun–Aug highs)
4.7
Avg heat wave length
days (historical)
95°
Avg peak temp
during heat waves
4
Dangerous nights 2026
Overnights ≥ 70°F
5
Heat waves 2026
so far

2026 Daily High Temperature vs Normal

Year to date
Above normal Below normal

164 of 249 days with data were above the 1991–2020 normal high for their date.

Days ≥ 90°F Per Year

1938–2026
34
2026 so far
21
Avg/year 1970–2025
32
Avg/year (last 10 complete)
62
Most in a year (2016)

Average Daily High by Decade

Full year · complete decades only

Longest Heat Waves — Bristol-Johnson City

# Dates Days Peak Avg High Avg Overnight Low
🏆 Aug 6, 2007 – Aug 25, 2007 20 99°F (Aug 23) 94°F 65°F
2 Jul 2, 1993 – Jul 14, 1993 13 97°F (Jul 5) 94°F 69°F
3 Jul 19, 1952 – Jul 30, 1952 12 102°F (Jul 28) 96°F 68°F
4 Jun 28, 2012 – Jul 8, 2012 11 103°F (Jun 30) 97°F 65°F
5 Aug 9, 1988 – Aug 19, 1988 11 101°F (Aug 18) 95°F 67°F
6 Jul 29, 1953 – Aug 8, 1953 11 95°F (Aug 1) 93°F 69°F
7 Aug 8, 2016 – Aug 17, 2016 10 96°F (Aug 12) 93°F 69°F
8 Aug 26, 1953 – Sep 3, 1953 9 98°F (Aug 31) 94°F 62°F
9 Jul 20, 2016 – Jul 28, 2016 9 98°F (Jul 23) 95°F 67°F
10 Jul 19, 1987 – Jul 27, 1987 9 97°F (Jul 23) 94°F 65°F

Heat Waves Per Year

Warm Summer Nights (Jun–Aug)

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

63
2026 total
above-normal nights
48.8
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

Actual vs. 1991–2020 full-month and full-season normals

29.67"
2026 YTD
Normal: 32.28"
-2.61"
0.16"
September so far
September normal: 2.84"
-2.68"
6
2026 heavy rain days
Days with ≥ 1.0"

2026 Accumulation vs. Normal

Running total since Jan 1 against the normal pace for the same date · Bristol-Johnson City is 2.61" behind the normal pace

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 +0.68" per decade, about +6.0" across the record.

Heavy Rain Days Per Year (≥ 1.0")

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

Month in Review — August 2026

76.2°F

Average temperature · August 2026

48th-warmest month on record

13th-warmest August of 88 on record

+1.7° vs. 74.5° average (1991–2020)
79.6°F
Warmest month ever
July 1993
79.0°F
Warmest August ever
2007
8
Days ≥ 90°F
in August
98°F
Hottest of 2026
Jul 3

Longest 90°F Streak in August

4 consecutive days with highs of at least 90°F (Aug 14–17, 2026, peaking at 92°F)

The longest August streak since 2024 (2 years). The August record is 20 days, set in 2007.

Average August Temperature by Year

1938–2026 · 2026 highlighted · trend +0.15° per decade (warming since 1938)

Precipitation — August 2026

Month total against the 1991–2020 average and every other August on record

4.94"
Total precipitation
August 2026
+1.18"
vs. average
Normal: 3.76" · 131% of normal
22nd-wettest
August rank
of 89 on record
11.34"
Wettest August ever
2003 · driest 0.37" (2007)

August Precipitation by Year

1938–2026 · 2026 highlighted · trend +0.05" per decade (wetter since 1938)

Wettest Augusts on Record

# Year Total
1 2003 11.34"
2 1942 7.43"
3 1966 7.07"
4 2017 6.28"
5 2010 6.26"
6 1940 6.14"
7 2023 6.05"
8 1949 6.03"
9 2015 6.01"
10 1950 5.65"

Driest Augusts on Record

# Year Total
1 2007 0.37"
2 1987 0.55"
3 1954 0.82"
4 1953 0.93"
5 1984 1.23"
6 2009 1.52"
7 1997 1.53"
8 1941 1.62"
9 1955 1.88"
10 1974 1.95"

Warmest Augusts on Record

# Year Avg Temp
1 2007 79.0°F
2 2016 78.7°F
3 1995 78.4°F
4 2010 78.0°F
5 1955 77.6°F
6 1987 77.5°F
7 1959 77.3°F
8 2021 77.2°F
9 1988 77.1°F
10 1980 76.9°F

Warmest Months on Record (Any Month)

# Month Avg Temp
1 July 1993 79.6°F
2 August 2007 79.0°F
3 August 2016 78.7°F
4 July 2011 78.6°F
5 July 2016 78.6°F
6 August 1995 78.4°F
7 July 2010 78.3°F
8 August 2010 78.0°F
9 July 2020 78.0°F
10 July 2025 78.0°F

Nearby Stations — August 2026

How the same month ranked at the closest reporting stations

Station Avg Temp August Rank
Bristol-Johnson City, TN 76.2°F 13th of 88
Mount Mitchell, NC 61.5°F 8th of 83
Asheville, NC 75.3°F 6th of 133
Caesars Head, SC 70.7°F 30th of 82
About this data. Monthly averages are the mean of daily average temperatures, computed from NOAA Threadex records via RCC ACIS. Months missing more than three days of observations are excluded from the rankings, so the in-progress month never appears. Rankings cover 1,062 complete months on record. Precipitation totals sum the daily reports for the month, with trace amounts counted as zero. A month missing any day of precipitation data is left out entirely (an unreported day is unreported rain), so the precipitation ranking covers 89 complete Augusts. Normals are the 1991–2020 mean for the same calendar month. Trend lines are a least-squares fit across every year shown.

Fall in Review — Fall 2026

September 1 – November 30, 2026

Fall 2026 is still under way. Season totals and rankings appear once November closes; the markers below update as they happen.

Summer to Winter — 2026

Each turning point of the season against its 1991–2020 normal date, with the earliest and latest on record

Marker 2026 Normal vs. normal Earliest Latest Drift
Last 90°F day
The final day of summer heat
 Sep 4
so far
 Sep 1 Jun 27, 2009 Oct 7, 2018 -0.1 d/decade
Last 80°F day
The last genuinely warm afternoon
 Sep 6
so far
 Oct 17 Sep 13, 1976 Nov 14, 1993 +0.7 d/decade
First high below 50°F
The first afternoon that stays cold
 not yet Nov 1 Sep 29, 1967 Dec 2, 1946 -0.3 d/decade
First 32°F freeze
Growing season over
 not yet Oct 21 Oct 1, 1947 Nov 13, 1986 +0.1 d/decade
First 28°F hard freeze
Cold enough to end tender growth
 not yet Oct 31 Oct 3, 1974 Dec 2, 1985 +0.2 d/decade
First 20°F night
Winter cold arriving
 not yet Nov 30 Oct 27, 1962 Dec 25, 1998 +0.9 d/decade
First measurable snow
0.1" or more in a day
 not yet Dec 1 Oct 20, 1989 Dec 31, 1998 +0.2 d/decade

Drift is a least-squares fit across every year on record. Positive means the marker has been arriving later.

First Freeze by Year

The first 32°F night of each autumn since 1938 · trending +0.1 days later per decade

184
Normal length
1991–2020 average
211
Longest on record
1985
144
Shortest on record
1947

Growing Season Length by Year

Days between the last spring freeze and the first fall freeze · trending -0.1 days shorter per decade

Fall Average Temperature by Year

1938–2025 · 2026 highlighted · trend +0.08° per decade (warming since 1938)

Fall Precipitation by Year

1938–2025 · 2026 highlighted · trend +0.13" per decade (wetter since 1938)

About this data. Fall is meteorological autumn, September 1 through November 30, the window NOAA uses for seasonal statistics. Seasonal temperature is the day-weighted mean of the three monthly means; precipitation is their sum, and a season missing any of the three months is left out of the rankings. Freeze, heat and snow markers come from daily NOAA Threadex observations via RCC ACIS: freezes and snow are the first occurrence on or after July 1, and the last 90°F and 80°F days are the final ones anywhere in the calendar year. Growing season counts the freeze-free days between the last spring 32°F and the first fall 32°F.
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