September 2021 was drier than normal across eastern Kentucky. Jackson and London had less than
three inches of precipitation with both locations around an inch below normal. Jackson averaged 69.7
degrees last month which was more than a half a degree warmer than normal. London finished September
with a temperature of 68.6 degrees which was a couple tenths of a degree cooler than normal. Climate
data for Jackson dates back to 1981 while weather records began in 1954 at London.
The following are September climate summaries for Jackson and London as well as the September Local
Climatological Data reports for Jackson and London:
...THE JACKSON KY CLIMATE SUMMARY FOR THE MONTH OF SEPTEMBER 2021...
CLIMATE NORMAL PERIOD 1991 TO 2020
CLIMATE RECORD PERIOD 1981 TO 2021
WEATHER OBSERVED NORMAL DEPART LAST YEAR`S
VALUE DATE(S) VALUE FROM VALUE DATE(S)
NORMAL
................................................................
TEMPERATURE (F)
RECORD
HIGH 98 09/10/2019
LOW 34 09/24/1989
HIGHEST 86 09/14 89 -3 87 09/02
09/19
09/01
LOWEST 47 09/24 42 5 46 09/30
09/26
09/19
AVG. MAXIMUM 78.8 79.0 -0.2 77.5
AVG. MINIMUM 60.6 59.1 1.5 59.5
MEAN 69.7 69.1 0.6 68.5
DAYS MAX >= 90 0 2.1 -2.1 0
DAYS MAX <= 32 0 0.0 0.0 0
DAYS MIN <= 32 0 0.0 0.0 0
DAYS MIN <= 0 0 0.0 0.0 0
PRECIPITATION (INCHES)
RECORD
MAXIMUM 9.17 2018
MINIMUM T 2019
TOTALS 2.39 3.42 -1.03 3.78
DAILY AVG. 0.08 0.11 -0.03 0.13
DAYS >= .01 10 8.2 1.8 8
DAYS >= .10 6 5.6 0.4 5
DAYS >= .50 2 2.2 -0.2 4
DAYS >= 1.00 0 1.0 -1.0 1
GREATEST
24 HR. TOTAL 0.90 09/22 TO 09/23 1.13
SNOWFALL (INCHES)
RECORDS
TOTAL MM MM
TOTALS 0.0 0.0 0.0 0.0
SINCE 7/1 0.0 0.0 0.0 0.0
SNOWDEPTH AVG. 0 0
DAYS >= 1.0 0 0.0 0.0 0
GREATEST
SNOW DEPTH 0 0
24 HR TOTAL 0 0.0
DEGREE DAYS
HEATING TOTAL 24 39 -15 43
SINCE 7/1 24 40 -16 43
COOLING TOTAL 170 161 9 158
SINCE 1/1 1292 1195 97 1345
................................................................
WIND (MPH)
AVERAGE WIND SPEED 1.6
HIGHEST WIND SPEED/DIRECTION 17/300 DATE 09/22
HIGHEST GUST SPEED/DIRECTION 29/310 DATE 09/22
SKY COVER
POSSIBLE SUNSHINE (PERCENT) MM
AVERAGE SKY COVER 0.30
NUMBER OF DAYS FAIR 19
NUMBER OF DAYS PC 8
NUMBER OF DAYS CLOUDY 3
AVERAGE RH (PERCENT) 73
WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM 2 MIXED PRECIP 0
HEAVY RAIN 2 RAIN 7
LIGHT RAIN 10 FREEZING RAIN 0
LT FREEZING RAIN 0 HAIL 0
HEAVY SNOW 0 SNOW 0
LIGHT SNOW 0 SLEET 0
FOG 20 FOG W/VIS <= 1/4 MILE 9
HAZE 3
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
$$
PRELIMINARY LOCAL CLIMATOLOGICAL DATA (WS FORM: F-6)
STATION: JACKSON KY
MONTH: SEPTEMBER
YEAR: 2021
LATITUDE: 37 35 N
LONGITUDE: 83 19 W
TEMPERATURE IN F: :PCPN: SNOW: WIND :SUNSHINE: SKY :PK WND
================================================================================
1 2 3 4 5 6A 6B 7 8 9 10 11 12 13 14 15 16 17 18
12Z AVG MX 2MIN
DY MAX MIN AVG DEP HDD CDD WTR SNW DPTH SPD SPD DIR MIN PSBL S-S WX SPD DR
================================================================================
1 76 66 71 -2 0 6 0.21 0.0 0 3.2 13 330 M M 7 12 20 320
2 76 60 68 -5 0 3 0.00 0.0 0 0.3 6 90 M M 1 1 17 80
3 79 57 68 -5 0 3 0.00 0.0 0 0.1 6 100 M M 0 9 110
4 83 64 74 2 0 9 0.00 0.0 0 1.9 6 210 M M 2 12 210
5 74 64 69 -3 0 4 0.08 0.0 0 1.2 7 320 M M 8 12 14 200
6 80 63 72 0 0 7 0.00 0.0 0 0.1 7 310 M M 4 12 9 290
7 84 59 72 0 0 7 0.00 0.0 0 1.6 7 170 M M 0 12 170
8 82 65 74 3 0 9 0.14 0.0 0 2.7 13 330 M M 5 12 20 10
9 76 60 68 -3 0 3 0.00 0.0 0 2.1 12 320 M M 6 1 19 270
10 77 55 66 -5 0 1 0.00 0.0 0 0.9 6 360 M M 1 1 11 340
11 80 58 69 -2 0 4 0.00 0.0 0 3.0 10 170 M M 0 18 160
12 83 65 74 4 0 9 0.00 0.0 0 2.7 9 170 M M 0 17 260
13 85 67 76 6 0 11 0.00 0.0 0 2.1 7 160 M M 1 11 220
14 86 67 77 7 0 12 0.00 0.0 0 1.5 7 160 M M 1 12 200
15 75 63 69 0 0 4 0.77 0.0 0 1.8 16 330 M M 7 123 27 320
16 81 63 72 3 0 7 0.00 0.0 0 0.1 5 140 M M 7 12 8 110
17 85 65 75 6 0 10 0.00 0.0 0 0.9 6 300 M M 1 1 10 320
18 85 67 76 8 0 11 0.00 0.0 0 0.5 6 130 M M 2 12 9 110
19 86 68 77 9 0 12 0.13 0.0 0 0.9 10 170 M M 3 13 21 170
20 81 68 75 7 0 10 0.02 0.0 0 2.1 8 130 M M 6 1 13 180
21 76 67 72 5 0 7 0.13 0.0 0 1.1 7 150 M M 10 1 12 160
22 71 53 62 -5 3 0 0.89 0.0 0 3.7 17 300 M M 9 12 29 310
23 67 52 60 -7 5 0 0.01 0.0 0 2.0 10 290 M M 6 1 18 280
24 71 47 59 -7 6 0 0.00 0.0 0 1.5 7 300 M M 0 11 310
25 70 49 60 -6 5 0 0.01 0.0 0 1.7 9 290 M M 2 1 17 260
26 73 47 60 -6 5 0 0.00 0.0 0 1.5 7 310 M M 1 128 14 310
27 80 53 67 2 0 2 0.00 0.0 0 3.2 10 170 M M 0 17 180
28 81 63 72 7 0 7 0.00 0.0 0 1.6 8 240 M M 0 17 250
29 83 62 73 8 0 8 0.00 0.0 0 0.6 7 310 M M 0 18 12 300
30 78 60 69 5 0 4 0.00 0.0 0 0.6 5 110 M M 0 18 11 50
================================================================================
SM 2364 1817 24 170 2.39 0.0 47.2 M 90
================================================================================
AV 78.8 60.6 1.6 FASTST M M 3 MAX(MPH)
MISC ----> 17 300 29 310
================================================================================
NOTES:
# LAST OF SEVERAL OCCURRENCES
COLUMN 17 PEAK WIND IN M.P.H.
PRELIMINARY LOCAL CLIMATOLOGICAL DATA (WS FORM: F-6) , PAGE 2
STATION: JACKSON KY
MONTH: SEPTEMBER
YEAR: 2021
LATITUDE: 37 35 N
LONGITUDE: 83 19 W
[TEMPERATURE DATA] [PRECIPITATION DATA] SYMBOLS USED IN COLUMN 16
AVERAGE MONTHLY: 69.7 TOTAL FOR MONTH: 2.39 1 = FOG OR MIST
DPTR FM NORMAL: 0.6 DPTR FM NORMAL: -1.03 2 = FOG REDUCING VISIBILITY
HIGHEST: 86 ON 19,14 GRTST 24HR 0.90 ON 22-23 TO 1/4 MILE OR LESS
LOWEST: 47 ON 26,24 3 = THUNDER
SNOW, ICE PELLETS, HAIL 4 = ICE PELLETS
TOTAL MONTH: 0.0 INCH 5 = HAIL
GRTST 24HR 0.0 6 = FREEZING RAIN OR DRIZZLE
GRTST DEPTH: 0 7 = DUSTSTORM OR SANDSTORM:
VSBY 1/2 MILE OR LESS
8 = SMOKE OR HAZE
[NO. OF DAYS WITH] [WEATHER - DAYS WITH] 9 = BLOWING SNOW
X = TORNADO
MAX 32 OR BELOW: 0 0.01 INCH OR MORE: 10
MAX 90 OR ABOVE: 0 0.10 INCH OR MORE: 6
MIN 32 OR BELOW: 0 0.50 INCH OR MORE: 2
MIN 0 OR BELOW: 0 1.00 INCH OR MORE: 0
[HDD (BASE 65) ]
TOTAL THIS MO. 24 CLEAR (SCALE 0-3) 19
DPTR FM NORMAL -15 PTCLDY (SCALE 4-7) 8
TOTAL FM JUL 1 24 CLOUDY (SCALE 8-10) 3
DPTR FM NORMAL -16
[CDD (BASE 65) ]
TOTAL THIS MO. 170
DPTR FM NORMAL 9 [PRESSURE DATA]
TOTAL FM JAN 1 1292 HIGHEST SLP 30.26 ON 12
DPTR FM NORMAL 97 LOWEST SLP 29.55 ON 1
[REMARKS]
#FINAL-09-21#
London Kentucky data:
...THE LONDON KY CLIMATE SUMMARY FOR THE MONTH OF SEPTEMBER 2021...
CLIMATE NORMAL PERIOD 1991 TO 2020
CLIMATE RECORD PERIOD 1954 TO 2021
WEATHER OBSERVED NORMAL DEPART LAST YEAR`S
VALUE DATE(S) VALUE FROM VALUE DATE(S)
NORMAL
................................................................
TEMPERATURE (F)
RECORD
HIGH 97 09/05/2007
LOW 32 09/24/1983
HIGHEST 86 09/14 MM MM 88 09/10
LOWEST 44 09/24 MM MM 43 09/22
AVG. MAXIMUM 78.9 80.0 -1.1 78.2
AVG. MINIMUM 58.4 57.6 0.8 58.4
MEAN 68.6 68.8 -0.2 68.3
DAYS MAX >= 90 0 3.0 -3.0 0
DAYS MAX <= 32 0 0.0 0.0 0
DAYS MIN <= 32 0 0.0 0.0 0
DAYS MIN <= 0 0 0.0 0.0 0
PRECIPITATION (INCHES)
RECORD
MAXIMUM 8.50 2004
MINIMUM 0.11 2019
TOTALS 2.58 3.55 -0.97 4.30
DAILY AVG. 0.09 0.12 -0.03 0.14
DAYS >= .01 9 8.3 0.7 9
DAYS >= .10 5 5.5 -0.5 6
DAYS >= .50 3 2.1 0.9 4
DAYS >= 1.00 0 1.0 -1.0 2
GREATEST
24 HR. TOTAL 0.90 09/22 TO 09/22 1.43
SNOWFALL (INCHES)
RECORDS
TOTAL MM MM
TOTALS MM MM MM MM
SINCE 7/1 MM MM MM MM
SNOWDEPTH AVG. MM MM
DAYS >= 1.0 MM MM MM 0
GREATEST
SNOW DEPTH MM MM
24 HR TOTAL MM MM
DEGREE DAYS
HEATING TOTAL 29 38 -9 46
SINCE 7/1 29 37 -8 46
COOLING TOTAL 144 152 -8 155
SINCE 1/1 1184 1192 -8 1244
................................................................
WIND (MPH)
AVERAGE WIND SPEED 3.3
HIGHEST WIND SPEED/DIRECTION 23/290 DATE 09/22
HIGHEST GUST SPEED/DIRECTION 32/290 DATE 09/22
SKY COVER
POSSIBLE SUNSHINE (PERCENT) MM
AVERAGE SKY COVER 0.35
NUMBER OF DAYS FAIR 16
NUMBER OF DAYS PC 9
NUMBER OF DAYS CLOUDY 5
AVERAGE RH (PERCENT) 77
WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM 2 MIXED PRECIP 0
HEAVY RAIN 4 RAIN 4
LIGHT RAIN 9 FREEZING RAIN 0
LT FREEZING RAIN 0 HAIL 0
HEAVY SNOW 0 SNOW 0
LIGHT SNOW 0 SLEET 0
FOG 24 FOG W/VIS <= 1/4 MILE 5
HAZE 0
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
$$
PRELIMINARY LOCAL CLIMATOLOGICAL DATA (WS FORM: F-6)
STATION: LONDON KY
MONTH: SEPTEMBER
YEAR: 2021
LATITUDE: 37 4 N
LONGITUDE: 84 5 W
TEMPERATURE IN F: :PCPN: SNOW: WIND :SUNSHINE: SKY :PK WND
================================================================================
1 2 3 4 5 6A 6B 7 8 9 10 11 12 13 14 15 16 17 18
12Z AVG MX 2MIN
DY MAX MIN AVG DEP HDD CDD WTR SNW DPTH SPD SPD DIR MIN PSBL S-S WX SPD DR
================================================================================
1 78 65 72 -1 0 7 0.19 M M 6.8 16 360 M M 8 1 24 360
2 77 59 68 -5 0 3 0.00 M M 5.9 14 20 M M 1 21 20
3 81 54 68 -5 0 3 0.00 M M 2.2 8 300 M M 2 13 270
4 82 62 72 0 0 7 0.00 M M 4.0 15 240 M M 2 1 19 270
5 75 67 71 -1 0 6 0.07 M M 5.2 13 220 M M 8 1 17 210
6 80 60 70 -2 0 5 0.00 M M 2.4 10 60 M M 4 16 40
7 83 53 68 -4 0 3 0.00 M M 2.7 10 240 M M 1 1 16 240
8 83 63 73 2 0 8 0.03 M M 4.8 15 240 M M 5 1 21 330
9 78 57 68 -3 0 3 0.00 M M 4.7 16 360 M M 5 1 22 360
10 78 52 65 -6 0 0 0.00 M M 1.4 8 20 M M 2 1 12 30
11 80 53 67 -3 0 2 0.00 M M 3.5 16 250 M M 0 1 20 230
12 84 59 72 2 0 7 0.00 M M 4.6 14 250 M M 0 20 250
13 84 62 73 3 0 8 0.00 M M 2.9 9 220 M M 2 1 14 200
14 86 63 75 5 0 10 0.00 M M 1.9 10 200 M M 1 1 18 200
15 80 63 72 3 0 7 0.62 M M 4.2 17 20 M M 8 123 25 20
16 83 61 72 3 0 7 0.00 M M 1.9 9 50 M M 5 12 14 40
17 85 63 74 6 0 9 0.00 M M 1.0 7 140 M M 3 1 10 230
18 81 67 74 6 0 9 T M M 1.4 7 270 M M 5 1 11 220
19 84 67 76 8 0 11 0.53 M M 2.6 17 120 M M 5 123 28 120
20 77 66 72 5 0 7 0.20 M M 2.7 10 150 M M 6 1 16 160
21 74 66 70 3 0 5 0.03 M M 2.6 10 140 M M 8 1 16 130
22 69 53 61 -6 4 0 0.90 M M 8.2 23 290 M M 9 1 32 290
23 66 49 58 -8 7 0 0.00 M M 6.2 15 240 M M 6 20 260
24 70 44 57 -9 8 0 0.00 M M 1.2 8 250 M M 0 1 12 280
25 70 48 59 -7 6 0 0.01 M M 2.5 13 280 M M 3 1 18 280
26 72 49 61 -4 4 0 0.00 M M 2.3 9 250 M M 5 12 13 230
27 80 50 65 0 0 0 0.00 M M 3.9 14 240 M M 0 22 250
28 81 58 70 6 0 5 0.00 M M 3.6 15 240 M M 0 1 19 240
29 84 58 71 7 0 6 0.00 M M 1.4 8 30 M M 2 1 12 320
30 82 60 71 7 0 6 0.00 M M 1.8 8 30 M M 3 12 12 30
================================================================================
SM 2367 1751 29 144 2.58 M 100.5 M 109
================================================================================
AV 78.9 58.4 3.4 FASTST M M 4 MAX(MPH)
MISC ----> 23 290 32 290
================================================================================
NOTES:
# LAST OF SEVERAL OCCURRENCES
COLUMN 17 PEAK WIND IN M.P.H.
PRELIMINARY LOCAL CLIMATOLOGICAL DATA (WS FORM: F-6) , PAGE 2
STATION: LONDON KY
MONTH: SEPTEMBER
YEAR: 2021
LATITUDE: 37 4 N
LONGITUDE: 84 5 W
[TEMPERATURE DATA] [PRECIPITATION DATA] SYMBOLS USED IN COLUMN 16
AVERAGE MONTHLY: 68.6 TOTAL FOR MONTH: 2.58 1 = FOG OR MIST
DPTR FM NORMAL: -0.2 DPTR FM NORMAL: -0.97 2 = FOG REDUCING VISIBILITY
HIGHEST: 86 ON 14 GRTST 24HR 0.90 ON 22-22 TO 1/4 MILE OR LESS
LOWEST: 44 ON 24 3 = THUNDER
SNOW, ICE PELLETS, HAIL 4 = ICE PELLETS
TOTAL MONTH: M 5 = HAIL
GRTST 24HR M ON M 6 = FREEZING RAIN OR DRIZZLE
GRTST DEPTH: M ON M 7 = DUSTSTORM OR SANDSTORM:
VSBY 1/2 MILE OR LESS
8 = SMOKE OR HAZE
[NO. OF DAYS WITH] [WEATHER - DAYS WITH] 9 = BLOWING SNOW
X = TORNADO
MAX 32 OR BELOW: 0 0.01 INCH OR MORE: 9
MAX 90 OR ABOVE: 0 0.10 INCH OR MORE: 5
MIN 32 OR BELOW: 0 0.50 INCH OR MORE: 3
MIN 0 OR BELOW: 0 1.00 INCH OR MORE: 0
[HDD (BASE 65) ]
TOTAL THIS MO. 29 CLEAR (SCALE 0-3) 15
DPTR FM NORMAL -9 PTCLDY (SCALE 4-7) 14
TOTAL FM JUL 1 29 CLOUDY (SCALE 8-10) 1
DPTR FM NORMAL -8
[CDD (BASE 65) ]
TOTAL THIS MO. 144
DPTR FM NORMAL -8 [PRESSURE DATA]
TOTAL FM JAN 1 1184 HIGHEST SLP 30.28 ON 12
DPTR FM NORMAL -8 LOWEST SLP 29.57 ON 1
[REMARKS]
#FINAL-09-21#
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