Heavy Rain and Severe Thunderstorms in the Southwest; Coastal Flooding Along Portions of the Eastern Seaboard

A slow moving front will produce a threat for heavy rainfall and severe weather from the southwest into the western High Plains through the weekend. Heavy rainfall and isolated flash flooding and gusty winds will be possible this weekend into early next week in portions of southern Florida. Coastal flooding impacts remain possible through the weekend along the Southeast and Mid-Atlantic coasts Read More >

Morristown, TN Area Seasonal Climate Summary

All normals are based on 30 year climate period from 1981 - 2010.

Chattanooga (CHA) period of record is from 1879 - Current.

Knoxville (TYS) period of record is from 1871 - Current.

Tri-Cities (TRI) period of record is from 1937 - Current.

Seasonal Averages/Totals and Normals

Chattanooga Seasonal Averages/Totals and Normals

                        

408

CXUS54 KMRX 011228

CLSCHA



CLIMATE REPORT

NATIONAL WEATHER SERVICE MORRISTOWN, TN

828 AM EDT TUE SEP 01 2026



...................................



...THE CHATTANOOGA AIRPORT CLIMATE SUMMARY FOR THE SEASON, FROM

6/1/2026 TO 8/31/2026...



CLIMATE NORMAL PERIOD: 1991 TO 2020

CLIMATE RECORD PERIOD: 1879 TO 2026



WEATHER         OBSERVED          NORMAL  DEPART

                VALUE   DATE(S)   VALUE   FROM

                                          NORMAL

................................................

TEMPERATURE (F)

RECORD

 HIGH            107   06/30/2012

 LOW              39   06/01/1889

HIGHEST          100   07/02

                       07/03

LOWEST            57   06/03

AVG. MAXIMUM    90.6

AVG. MINIMUM    70.7

MEAN            80.7               79.4     1.3

DAYS MAX >= 90    61

DAYS MIN <= 32     0



PRECIPITATION (INCHES)

RECORD

 MAXIMUM       24.72   1920

 MINIMUM        3.36   1902

TOTALS         11.72              12.93   -1.21

DAILY AVG.      0.13

DAYS >= .01       35

DAYS >= .10       20

DAYS >= .50       10

DAYS >= 1.00       2

GREATEST

 24 HR. TOTAL   1.64   07/20 TO 07/20



SNOWFALL (INCHES)

TOTALS           0.0

SINCE 7/1        0.0

SNOWDEPTH AVG.     0

DAYS >= TRACE      0

DAYS >= 1.0        0

GREATEST

 SNOW DEPTH        0



DEGREE DAYS

HEATING TOTAL      0                  1      -1

COOLING TOTAL   1467               1328     139

................................................



WIND (MPH)

HIGHEST WIND SPEED/DIRECTION    33/290    DATE  08/17

HIGHEST GUST SPEED/DIRECTION    49/290    DATE  08/17



SKY COVER

AVERAGE SKY COVER           0.51





WEATHER CONDITIONS. NUMBER OF DAYS WITH

THUNDERSTORM             32     MIXED PRECIP               0

HEAVY RAIN               16     RAIN                      17

LIGHT RAIN               42     FREEZING RAIN              0

LT FREEZING RAIN          0     HAIL                       0

HEAVY SNOW                0     SNOW                       0

LIGHT SNOW                0     SLEET                      0

FOG                      33     FOG W/VIS <= 1/4 MILE      2

HAZE                      9



-  INDICATES NEGATIVE NUMBERS.

R  INDICATES RECORD WAS SET OR TIED.

MM INDICATES DATA IS MISSING.

T  INDICATES TRACE AMOUNT.



$$

Knoxville Seasonal Averages/Totals and Normals

                        

442

CXUS54 KMRX 011228

CLSTYS



CLIMATE REPORT

NATIONAL WEATHER SERVICE MORRISTOWN, TN

828 AM EDT TUE SEP 01 2026



...................................



...THE KNOXVILLE MCGHEE TYSON AIRPORT CLIMATE SUMMARY FOR THE SEASON, FROM

6/1/2026 TO 8/31/2026...



CLIMATE NORMAL PERIOD: 1991 TO 2020

CLIMATE RECORD PERIOD: 1871 TO 2026



WEATHER         OBSERVED          NORMAL  DEPART

                VALUE   DATE(S)   VALUE   FROM

                                          NORMAL

................................................

TEMPERATURE (F)

RECORD

 HIGH            105   07/01/2012

                       06/30/2012

 LOW              42   06/13/1903

HIGHEST           97   07/02

                       07/03

LOWEST            56   06/04

AVG. MAXIMUM    88.2

AVG. MINIMUM    69.4

MEAN            78.8               77.2     1.6

DAYS MAX >= 90    37               30.9     6.1

DAYS MIN <= 32     0                0.0     0.0



PRECIPITATION (INCHES)

RECORD

 MAXIMUM       22.85   1917

 MINIMUM        3.78   1944

TOTALS         13.94              13.12    0.82

DAILY AVG.      0.15

DAYS >= .01       33

DAYS >= .10       20

DAYS >= .50       11

DAYS >= 1.00       4

GREATEST

 24 HR. TOTAL   2.29   06/27 TO 06/28



SNOWFALL (INCHES)

TOTALS           0.0

SINCE 7/1        0.0

SNOWDEPTH AVG.     0

DAYS >= TRACE      0

DAYS >= 1.0        0

GREATEST

 SNOW DEPTH        0



DEGREE DAYS

HEATING TOTAL      0                  2      -2

COOLING TOTAL   1298               1123     175

................................................



WIND (MPH)

HIGHEST WIND SPEED/DIRECTION    35/010    DATE  07/12

HIGHEST GUST SPEED/DIRECTION    47/010    DATE  08/17



SKY COVER

AVERAGE SKY COVER           0.60





WEATHER CONDITIONS. NUMBER OF DAYS WITH

THUNDERSTORM             36     MIXED PRECIP               0

HEAVY RAIN               10     RAIN                      20

LIGHT RAIN               42     FREEZING RAIN              0

LT FREEZING RAIN          0     HAIL                       0

HEAVY SNOW                0     SNOW                       0

LIGHT SNOW                0     SLEET                      0

FOG                      41     FOG W/VIS <= 1/4 MILE      2

HAZE                     48



-  INDICATES NEGATIVE NUMBERS.

R  INDICATES RECORD WAS SET OR TIED.

MM INDICATES DATA IS MISSING.

T  INDICATES TRACE AMOUNT.



$$

Tri-Cities Seasonal Averages/Totals and Normals

                        

443

CXUS54 KMRX 011228

CLSTRI



CLIMATE REPORT

NATIONAL WEATHER SERVICE MORRISTOWN, TN

828 AM EDT TUE SEP 01 2026



...................................



...THE TRI-CITIES AIRPORT CLIMATE SUMMARY FOR THE SEASON, FROM

6/1/2026 TO 8/31/2026...



CLIMATE NORMAL PERIOD: 1991 TO 2020

CLIMATE RECORD PERIOD: 1937 TO 2026



WEATHER         OBSERVED          NORMAL  DEPART

                VALUE   DATE(S)   VALUE   FROM

                                          NORMAL

................................................

TEMPERATURE (F)

RECORD

 HIGH            103   06/30/2012

 LOW              38   06/02/1966

                       06/01/1966

HIGHEST           98   07/03

LOWEST            47   06/03

AVG. MAXIMUM    86.8

AVG. MINIMUM    63.7

MEAN            75.3               74.1     1.2

DAYS MAX >= 90    26

DAYS MIN <= 32     0



PRECIPITATION (INCHES)

RECORD

 MAXIMUM       25.26   2003

 MINIMUM        5.10   1987

TOTALS         15.59              12.68    2.91

DAILY AVG.      0.17

DAYS >= .01       41

DAYS >= .10       28

DAYS >= .50       12

DAYS >= 1.00       4

GREATEST

 24 HR. TOTAL   2.19   06/27 TO 06/28



SNOWFALL (INCHES)

TOTALS           0.0

SINCE 7/1        0.0

SNOWDEPTH AVG.     0

DAYS >= TRACE      0

DAYS >= 1.0        0

GREATEST

 SNOW DEPTH        0



DEGREE DAYS

HEATING TOTAL      3                  8      -5

COOLING TOTAL    975                847     128

................................................



WIND (MPH)

HIGHEST WIND SPEED/DIRECTION    35/340    DATE  07/28

HIGHEST GUST SPEED/DIRECTION    56/350    DATE  07/28



SKY COVER

AVERAGE SKY COVER           0.63





WEATHER CONDITIONS. NUMBER OF DAYS WITH

THUNDERSTORM             37     MIXED PRECIP               0

HEAVY RAIN               25     RAIN                      19

LIGHT RAIN               40     FREEZING RAIN              0

LT FREEZING RAIN          0     HAIL                       0

HEAVY SNOW                0     SNOW                       0

LIGHT SNOW                0     SLEET                      0

FOG                      77     FOG W/VIS <= 1/4 MILE     15

HAZE                      8



-  INDICATES NEGATIVE NUMBERS.

R  INDICATES RECORD WAS SET OR TIED.

MM INDICATES DATA IS MISSING.

T  INDICATES TRACE AMOUNT.



$$

Monthly Averages, Totals and Normals

For recent monthly data, please review the Monthly Weather Summary product at: http://w2.weather.gov/climate/index.php?wfo=mrx.

MOST RECENT RECORDS

For recent records, please visit our Record Event Report (RER) products for Chattanooga (CHA), Knoxville (TYS), and Tri-Cities (TRI).

                        
098
SXUS74 KMRX 162144
RERCHA

RECORD EVENT REPORT
NATIONAL WEATHER SERVICE MORRISTOWN, TN
0527 PM EDT FRI OCT 16 2026

...RECORD HIGH TEMPERATURE SET AT CHATTANOOGA, TN ...

A RECORD HIGH TEMPERATURE OF 86 DEGREES WAS SET AT CHATTANOOGA, TN
TODAY. THIS BREAKS THE OLD RECORD OF 85 DEGREES SET IN 1897.

$$

                        
241
SXUS74 KMRX 152133
RERTYS

RECORD EVENT REPORT
NATIONAL WEATHER SERVICE MORRISTOWN, TN
0527 PM EDT THU OCT 15 2026

...RECORD HIGH TEMPERATURE SET AT KNOXVILLE MCGHEE TYSON AIRPORT...

A RECORD HIGH TEMPERATURE OF 89 DEGREES WAS SET AT KNOXVILLE MCGHEE
TYSON AIRPORT TODAY.

THIS BREAKS THE OLD RECORD OF 87 DEGREES SET IN 1881.


$$

                        
689
SXUS74 KMRX 162143
RERTRI

RECORD EVENT REPORT
NATIONAL WEATHER SERVICE MORRISTOWN, TN
0527 PM EDT FRI OCT 16 2026

...RECORD HIGH TEMPERATURE TIED AT TRI-CITIES AIRPORT...

A RECORD HIGH TEMPERATURE OF 83 DEGREES WAS TIED AT TRI-CITIES
AIRPORT TODAY. THIS TIES THE OLD RECORD OF 83 DEGREES SET IN 1938.

$$

Local Radar