Climatological Report (Daily)
Issued by NWS Knoxville/Tri Cities, TN

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145
CDUS44 KMRX 180840
CLITRI

CLIMATE REPORT
NATIONAL WEATHER SERVICE MORRISTOWN, TN
440 AM EDT FRI SEP 18 2026

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

...THE TRI-CITIES AIRPORT CLIMATE SUMMARY FOR SEPTEMBER 17 2026...

CLIMATE NORMAL PERIOD: 1991 TO 2020
CLIMATE RECORD PERIOD: 1937 TO 2026


WEATHER ITEM   OBSERVED TIME   RECORD YEAR NORMAL DEPARTURE LAST
                VALUE   (LST)  VALUE       VALUE  FROM      YEAR
                                                  NORMAL
...................................................................
TEMPERATURE (F)
 YESTERDAY
  MAXIMUM         94R       MM  92    1954  81     13       80
  MINIMUM         63        MM  37    2000  56      7       53
  AVERAGE         79                        68     11       67

PRECIPITATION (IN)
  YESTERDAY        0.00          2.37 2004   0.10  -0.10     0.00
  MONTH TO DATE    0.40                      1.61  -1.21     2.22
  SINCE SEP 1      0.40                      1.61  -1.21     2.22
  SINCE JAN 1     29.91                     33.32  -3.41    36.84

SNOWFALL (IN)
  YESTERDAY        0.0                       0.0    0.0      0.0
  MONTH TO DATE    0.0                       0.0    0.0      0.0
  SINCE SEP 1      0.0                       0.0    0.0      0.0
  SINCE JUL 1      0.0                       0.0    0.0      0.0
  SNOW DEPTH       0

DEGREE DAYS
 HEATING
  YESTERDAY        0                         1     -1        0
  MONTH TO DATE    0                         5     -5       17
  SINCE SEP 1      0                         5     -5       17
  SINCE JUL 1      0                         6     -6       24

 COOLING
  YESTERDAY       14                         4     10        2
  MONTH TO DATE  206                       104    102       26
  SINCE SEP 1    206                       104    102       26
  SINCE JAN 1   1330                      1046    284     1073
...................................................................


WIND (MPH)
  HIGHEST WIND SPEED     7   HIGHEST WIND DIRECTION    NW (310)
  HIGHEST GUST SPEED    MM   HIGHEST GUST DIRECTION    MM
  AVERAGE WIND SPEED     0.9


SKY COVER
  POSSIBLE SUNSHINE  MM
  AVERAGE SKY COVER 0.3


WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
  THUNDERSTORM
  FOG


RELATIVE HUMIDITY (PERCENT)
 HIGHEST   100           2:00 AM
 LOWEST     42           3:00 PM
 AVERAGE    71

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


THE TRI-CITIES AIRPORT CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR
 MAXIMUM TEMPERATURE (F)   80        93      1954
 MINIMUM TEMPERATURE (F)   56        39      1943


SUNRISE AND SUNSET
SEPTEMBER 18 2026.....SUNRISE   7:14 AM EDT   SUNSET   7:32 PM EDT
SEPTEMBER 19 2026.....SUNRISE   7:15 AM EDT   SUNSET   7:31 PM EDT


-  INDICATES NEGATIVE NUMBERS.
R  INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T  INDICATES TRACE AMOUNT.




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