Oak Ridge, TN

Tennessee · Records since 1947–2026

🌙 63°F Feels like 60°
Currently in Oak Ridge
As of 9:45 PM EDT

Records for September 26

🔥 Record High

93°F

September 26, 1998

+13° from 80° normal

❄ Record Low

37°F

September 26, 2001

-21° from 58° normal
🌞 Normal high: 80°F 🌑 Normal low: 58°F 1991–2020 normals

All-Time Records — Oak Ridge

🔥
105°F
Hottest Day Ever
Jun 30, 2012
❄
-17°F
Coldest Day Ever
Jan 21, 1985
🌧
7.45"
Wettest Day Ever
Aug 10, 1960
☃
12.0"
Most Snow in One Day
Mar 9, 1960

First & Last Dates — Oak Ridge

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)
249 days
Longest growing season
2024
165 days
Shortest growing season
1989
208 days
Normal growing season
1991–2020 average

Top 10 Record Highs — September 26

# Temp Date
🏆 93°F September 26, 1998
2 90°F September 26, 1986
3 89°F September 26, 2019
4 89°F September 26, 2017
5 88°F September 26, 2007
6 87°F September 26, 2023
7 86°F September 26, 1970
8 85°F September 26, 2016
9 85°F September 26, 2014
10 85°F September 26, 1999

Top 5 Record Lows — September 26

# Temp Date
🥶 37°F September 26, 2001
2 40°F September 26, 1964
3 43°F September 26, 1994
4 44°F September 26, 1991
5 44°F September 26, 1975
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 1947–2026. Climate normals represent the 1991–2020 average.

Heat Wave Summary — Oak Ridge

threshold: 94°F (90th percentile of historical Jun–Aug highs)
4.7
Avg heat wave length
days (historical)
98°
Avg peak temp
during heat waves
66
Dangerous nights 2026
Overnights ≥ 70°F
3
Heat waves 2026
so far

Days ≥ 90°F Per Year

1947–2026
73
2026 so far
38
Avg/year 1970–2025
50
Avg/year (last 10 complete)
91
Most in a year (1998)

Average Daily High by Decade

Full year · complete decades only

Longest Heat Waves — Oak Ridge

# Dates Days Peak Avg High Avg Overnight Low
🏆 Aug 6, 2007 – Aug 25, 2007 20 103°F (Aug 16) 98°F 72°F
2 Jul 8, 1980 – Jul 21, 1980 14 103°F (Jul 16) 99°F 68°F
3 Jul 17, 1986 – Jul 30, 1986 14 99°F (Jul 20) 96°F 70°F
4 Jul 18, 1952 – Jul 29, 1952 12 105°F (Jul 28) 99°F 69°F
5 Jul 18, 1993 – Jul 29, 1993 12 100°F (Jul 26) 97°F 70°F
6 Jun 28, 2012 – Jul 8, 2012 11 105°F (Jun 30) 100°F 70°F
7 Aug 11, 1995 – Aug 19, 1995 9 100°F (Aug 14) 99°F 71°F
8 Jul 3, 1993 – Jul 11, 1993 9 99°F (Jul 8) 96°F 69°F
9 Jul 19, 2016 – Jul 27, 2016 9 98°F (Jul 27) 97°F 75°F
10 Aug 27, 1953 – Sep 3, 1953 8 101°F (Sep 1) 97°F 64°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
33.8
Avg / summer
1970–2020
74
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 (1947–2026)

Blue = above average · tan = below average · gold = 2026 (partial)
Since 1947, annual totals have trended +0.66" per decade, about +5.2" 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 Oak Ridge is tracking against normal, year to date

Daily High Temperature vs Normal

Above normal Below normal

183 of 267 days with data were above the 1991–2020 normal high for their date.

Precipitation, Year to Date

40.52"
2026 YTD
Normal: 41.66"
-1.14"
1.99"
September so far
September normal: 3.83"
-1.84"
16
2026 heavy rain days
Days with ≥ 1.0"

Accumulation vs. Normal

Running total since Jan 1 against the normal pace for the same date · Oak Ridge is 1.14" behind the normal pace

Period Review — Aug 26 – Sep 25, 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)
81.1°F
Average temperature
1st-warmest of 79
+7.2°
vs. average
Normal: 73.9°F (1991–2020)

Average Temperature by Year — Aug 26 – Sep 25

1947–2026 · 2026 highlighted · trend +0.51° per decade (warming since 1947)

Precipitation by Year — Aug 26 – Sep 25

1947–2025 · 2026 highlighted · trend +0.11" per decade (wetter since 1947)

Warmest Aug 26 – Sep 25 on Record

# Year Avg Temp
1 2026 81.1°F
2 2016 79.1°F
3 2018 79.1°F
4 2019 77.6°F
5 1998 77.0°F
6 2007 76.7°F
7 1980 76.3°F
8 1970 76.1°F
9 1957 75.9°F
10 2024 75.6°F

Coolest Aug 26 – Sep 25 on Record

# Year Avg Temp
1 1949 66.6°F
2 1976 66.6°F
3 1967 67.6°F
4 1974 67.9°F
5 1982 68.4°F
6 1981 68.5°F
7 1968 68.8°F
8 1966 69.0°F
9 1975 69.2°F
10 1984 69.2°F
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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