Thunderstorms and a chance for some isolated flash flooding will continue today in the Southwest U.S. before an influx of tropical moisture from Priscilla brings widespread heavy rainfall and a flash flooding threat late this week into this weekend. A coastal storm may develop off the southeast U.S. coast Friday night and drift north just off the Mid-Atlantic coast through the weekend. Read More >
Below are the temperature and precipitation data for the previous month at Chattanooga (CHA), Knoxville (TYS), and Tri-Cities (TRI) as well as regional temperature and precipitation maps.
For more information about data and records, please visit the links at www.nws.noaa.gov/climate/local_data.php. More detailed climate information and climate graphs can also be accessed through our database.
For information about the Climate Prediction Center Outlooks for the upcoming months for Morristown, TN's forecast area,
please visit www.weather.gov/mrx/.
259
CXUS54 KMRX 021348
CLMCHA
CLIMATE REPORT
NATIONAL WEATHER SERVICE MORRISTOWN, TN
948 AM EDT THU OCT 02 2025
...................................
...THE CHATTANOOGA AIRPORT CLIMATE SUMMARY FOR THE MONTH OF SEPTEMBER 2025...
CLIMATE NORMAL PERIOD: 1991 TO 2020
CLIMATE RECORD PERIOD: 1879 TO 2025
WEATHER OBSERVED NORMAL DEPART
VALUE DATE(S) VALUE FROM
NORMAL
................................................
TEMPERATURE (F)
HIGHEST 92 09/05
LOWEST 58 09/13
AVG. MAXIMUM 85.9 84.3 1.6
AVG. MINIMUM 64.1 63.6 0.5
MEAN 75.0 73.9 1.1
DAYS MAX >= 90 4
DAYS MAX <= 32 0
DAYS MIN <= 32 0
DAYS MIN <= 0 0
PRECIPITATION (INCHES)
RECORD
MAXIMUM 14.18 1977
MINIMUM 0.04 1919
TOTALS 1.70 4.23 -2.53
DAYS >= .01 10
DAYS >= .10 5
DAYS >= .50 1
DAYS >= 1.00 0
GREATEST
24 HR. TOTAL 0.62 09/06 TO 09/06
SNOWFALL (INCHES)
TOTALS 0.0 0.0 0.0
SINCE 7/1 0.0
SNOWDEPTH AVG. 0
DAYS >= TRACE 0
GREATEST
SNOW DEPTH 0
DEGREE DAYS
HEATING TOTAL 0 7 -7
SINCE 7/1 0 5 -5
COOLING TOTAL 306 276 30
SINCE 1/1 1951 1849 102
................................................
WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM 7 RAIN 3
SNOW 0 FOG 13
FOG W/VIS <= 1/4 MILE 0
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
$$
260
CXUS54 KMRX 021348
CLMTYS
CLIMATE REPORT
NATIONAL WEATHER SERVICE MORRISTOWN, TN
948 AM EDT THU OCT 02 2025
...................................
...THE KNOXVILLE MCGHEE TYSON AIRPORT CLIMATE SUMMARY FOR THE MONTH OF SEPTEMBER 2025...
CLIMATE NORMAL PERIOD: 1991 TO 2020
CLIMATE RECORD PERIOD: 1871 TO 2025
WEATHER OBSERVED NORMAL DEPART
VALUE DATE(S) VALUE FROM
NORMAL
................................................
TEMPERATURE (F)
HIGHEST 89 09/21
LOWEST 54 09/10
AVG. MAXIMUM 82.3 82.5 -0.2
AVG. MINIMUM 61.7 61.1 0.6
MEAN 72.0 71.8 0.2
DAYS MAX >= 90 0
DAYS MAX <= 32 0
DAYS MIN <= 32 0
DAYS MIN <= 0 0
PRECIPITATION (INCHES)
RECORD
MAXIMUM 9.19 1989
MINIMUM 0.03 2019
TOTALS 2.92 3.49 -0.57
DAYS >= .01 8
DAYS >= .10 6
DAYS >= .50 1
DAYS >= 1.00 1
GREATEST
24 HR. TOTAL 1.42 09/03 TO 09/04
SNOWFALL (INCHES)
TOTALS 0.0 0.0 0.0
SINCE 7/1 0.0
SNOWDEPTH AVG. 0
DAYS >= TRACE 0
GREATEST
SNOW DEPTH 0
DEGREE DAYS
HEATING TOTAL 0 17 -17
SINCE 7/1 0 14 -14
COOLING TOTAL 217 220 -3
SINCE 1/1 1729 1527 202
................................................
WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM 7 RAIN 4
SNOW 0 FOG 18
FOG W/VIS <= 1/4 MILE 6
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
$$
181
CXUS54 KMRX 021348
CLMTRI
CLIMATE REPORT
NATIONAL WEATHER SERVICE MORRISTOWN, TN
948 AM EDT THU OCT 02 2025
...................................
...THE TRI-CITIES AIRPORT CLIMATE SUMMARY FOR THE MONTH OF SEPTEMBER 2025...
CLIMATE NORMAL PERIOD: 1991 TO 2020
CLIMATE RECORD PERIOD: 1937 TO 2025
WEATHER OBSERVED NORMAL DEPART
VALUE DATE(S) VALUE FROM
NORMAL
................................................
TEMPERATURE (F)
HIGHEST 87 09/20
LOWEST 45 09/08
AVG. MAXIMUM 79.2 80.7 -1.5
AVG. MINIMUM 55.6 56.4 -0.8
MEAN 67.4 68.6 -1.2
DAYS MAX >= 90 0
DAYS MAX <= 32 0
DAYS MIN <= 32 0
DAYS MIN <= 0 0
PRECIPITATION (INCHES)
RECORD
MAXIMUM 7.66 2024
MINIMUM 0.50 1985
TOTALS 4.15 2.84 1.31
DAYS >= .01 11
DAYS >= .10 8
DAYS >= .50 4
DAYS >= 1.00 0
GREATEST
24 HR. TOTAL 0.89 09/21 TO 09/22
SNOWFALL (INCHES)
TOTALS 0.0 0.0 0.0
SINCE 7/1 0.0
SNOWDEPTH AVG. 0
DAYS >= TRACE 0
GREATEST
SNOW DEPTH 0
DEGREE DAYS
HEATING TOTAL 17 36 -19
SINCE 7/1 24 35 -11
COOLING TOTAL 97 142 -45
SINCE 1/1 1144 1084 60
................................................
WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM 7 RAIN 4
SNOW 0 FOG 27
FOG W/VIS <= 1/4 MILE 6
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
$$
.PNG)
Regional Temperature and Precipitation Graphs:
Included below are graphs for Temperature, Departure from Normal Temperature, Precipitation, and Departure from Normal Precipitation.
Local Radar
Huntsville Radar
Regional Satellite
Graphical Forecast
Weather Map
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