Bristol-Johnson City, TN

Tennessee · Records since 1937–2026

🌤️ 86°F Feels like 94°
Currently in Bristol-Johnson City
As of 2:30 PM EDT
🔥 7° below today's record of 93°F

Records for September 11

🔥 Record High

93°F

September 11, 2019

+11° from 82° normal

❄ Record Low

42°F

September 11, 1993

-16° from 58° normal
🌞 Normal high: 82°F 🌑 Normal low: 58°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

First & Last Dates — Bristol-Johnson City

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)
211 days
Longest growing season
1985
144 days
Shortest growing season
1947
184 days
Normal growing season
1991–2020 average

Top 10 Record Highs — September 11

# Temp Date
🏆 93°F September 11, 2019
2 91°F September 11, 2020
3 91°F September 11, 1964
4 91°F September 11, 1939
5 90°F September 11, 1965
6 89°F September 11, 1963
7 88°F September 11, 2013
8 88°F September 11, 1961
9 87°F September 11, 2024
10 87°F September 11, 2005

Top 5 Record Lows — September 11

# Temp Date
🥶 42°F September 11, 1993
2 42°F September 11, 1969
3 43°F September 11, 1943
4 44°F September 11, 1999
5 44°F September 11, 1976
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

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

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 (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")

This Year — 2026

How Bristol-Johnson City is tracking against normal, year to date

Daily High Temperature vs Normal

Above normal Below normal

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

Precipitation, Year to Date

29.67"
2026 YTD
Normal: 32.63"
-2.96"
0.16"
September so far
September normal: 2.84"
-2.68"
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 · Bristol-Johnson City is 2.96" behind the normal pace

Period Review — Aug 11 – Sep 10, 2026

Any window, evaluated against every other year on record — 31 days

Quick picks: Last 7 days Last 30 days Last 90 days This month
Seasons: Spring (Mar–May) Summer (Jun–Aug) Fall (Sep–Nov)
76.4°F
Average temperature
4th-warmest of 89
+2.9°
vs. average
Normal: 73.5°F (1991–2020)
3.07"
Precipitation
40th-driest of 89
-0.46"
vs. average
Normal: 3.53" · 87% of normal

Average Temperature by Year — Aug 11 – Sep 10

1938–2026 · 2026 highlighted · trend +0.12° per decade (warming since 1938)

Precipitation by Year — Aug 11 – Sep 10

1938–2026 · 2026 highlighted · trend +0.04" per decade (wetter since 1938)

Warmest Aug 11 – Sep 10 on Record

# Year Avg Temp
1 2007 77.9°F
2 1959 77.0°F
3 1995 76.6°F
4 2026 76.4°F
5 1954 76.4°F
6 2016 76.4°F
7 1980 76.2°F
8 1947 76.2°F
9 1975 75.7°F
10 2021 75.7°F

Coolest Aug 11 – Sep 10 on Record

# Year Avg Temp
1 1967 68.1°F
2 1946 68.5°F
3 1984 69.5°F
4 2025 69.8°F
5 1997 70.0°F
6 1982 70.2°F
7 1986 70.3°F
8 2017 70.8°F
9 1981 70.9°F
10 1994 71.2°F

Wettest Aug 11 – Sep 10 on Record

# Year Total
1 2010 6.70"
2 1957 6.20"
3 2025 6.13"
4 1940 6.11"
5 2003 5.71"
6 1986 5.68"
7 2015 5.60"
8 1942 5.45"
9 1949 5.42"
10 2017 5.27"

Driest Aug 11 – Sep 10 on Record

# Year Total
1 2007 0.35"
2 1971 0.36"
3 1954 0.40"
4 1973 0.90"
5 1968 0.94"
6 1955 1.19"
7 1938 1.32"
8 1975 1.35"
9 1999 1.41"
10 1984 1.49"
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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