A near average month all round but it would have been very dry without the one huge rain event on the 6th.
Temperature mean is below averag again after July and August briefly reversed the cooling trend.

Average temperature = 11.9°C; diff from climate av: -0.6°C
Average humidity = 87%
Average dewpoint = 9.7°C
Average barometer = 1013.5 mb
Average windspeed = 6.4 mph
Average gustspeed = 9.5 mph
Average direction = 245° (WSW)
Rainfall for month = 75.2 mm
Rainfall for year = 455.8 mm
Maximum rain per minute = 1.0 mm on day 06 at time 15:34
Maximum temperature = 23.5°C on day 04 at time 15:28
Minimum temperature = 2.3°C on day 08 at time 04:55
Maximum dewpoint = 16.1°C on day 23 at time 15:33
Minimum dewpoint = 1.6°C on day 08 at time 4:55
Maximum pressure = 1026.4 mb on day 01 at time 00:21
Minimum pressure = 991.9 mb on day 15 at time 15:50
Maximum windspeed = 27.6 mph from 270°( W ) on day 15 at time 16:03
Maximum gust speed = 41.4 mph from 270°( W ) on day 15 at time 16:03
Maximum heat index = 25.0°C on day 05 at time 13:04
Avg daily max temp :16.0°C
Avg daily min temp :8.3°C
Growing degrees days :96.3 GDD
Total windrun = 4420.0miles
-----------------------------------
Daily rain totals
-----------------------------------
52.2 mm on day 6
00.6 mm on day 7
09.0 mm on day 9
01.0 mm on day 10
02.4 mm on day 11
01.0 mm on day 12
01.0 mm on day 13
02.4 mm on day 15
01.2 mm on day 17
00.2 mm on day 18
02.4 mm on day 19
01.2 mm on day 25
00.6 mm on day 27

Summary for period 01/09/2013 to 01/10/2013

Temperature (°C): Mean (1 minute)  14.5 Mean (min+max)   15.3 Mean Minimum     10.6  Mean Maximum     20.1  Minimum          7.3 on 15/09/2013  Maximum          28.6 on 04/09/2013   Highest Minimum  15.1 on 22/09/2013   Lowest Maximum   15.3 on 15/09/2013 Air frosts       0

Rainfall (mm): Total for period 49.2 Wettest day      18.3 on 13/09/2013   High rain rate   7.2 day 13/09/2013   Rain days        17 Dry days         13

Wind (km/h): Highest Gust     27.0 on 17/09/2013   Average Speed    2.3 Wind Run         1315.9 km  Gale days        0

Pressure (hPa): Maximum          1033.5 on 01/09/2013   Minimum          996.1 on 17/09/2013

Days with snow falling         0 Days with snow lying at 0900   0

Total hours of sunshine        0.0

Data transposed from http://www.norton-radstockweather.co.uk/Radstock-Data-Tables(2798516).htm

Summary for September 2013 (Watford)

Temperature (°C):
Mean (1 minute) 14.3
Mean (min+max) 14.7
Mean Minimum 10.3
Mean Maximum 19.1
Minimum 4.2 day 14
Maximum 28.7 day 05
Highest Minimum 14.4 day 12
Lowest Maximum 12.6 day 17
Air frosts 0

Rainfall (mm):
Total for month 48.6
Wettest day 30.9 day 13
High rain rate 14.4 day 13
Rain days 10
Dry days 19

Wind (mph):
Highest Gust 12.1 day 15
Average Speed 0.1
Wind Run 62.7 miles
Gale days 0

Pressure (mb):
Maximum 1018.0 day 01
Minimum 989.8 day 17

More on my blog - http://alalchan.tumblr.com/post/62762011193/september-2013-weather-statistics-for-watford-uk 

Basic September stats from Wareham,Dorset.

A very warm september here,and another very dry month again.

Mean Temp 15.5c

Highest Max 26.9c

Lowest Min 4.8c

Rainfall 40.5mm

Mean max: 18.0C

Mean min: 9.6C

Mean: 14.1C

Max temp: 25.0C (4th)

Min temp: 3.9C (8th)

Low max: 12.5C (17th)

High min: 15.5C (3rd)

Days above 20C: 9

Days below 15C: 4

Nights above 15C: 1

Nights above 10C: 12

Nights below 10C: 18

Nights below 5C: 2

Precipitation: 42.5mm

Days with rain (> 1mm): 8

Wettest day: 6th (24.5mm)

Dry days: 19

Longest dry period: 11 days (20th-30th)

Sunshine: 120.9hrs

Daily average: 4.0hrs

Sunless days: 2

Sunniest day: 29th (10.5hrs)

                            MONTHLY CLIMATOLOGICAL SUMMARY for SEP. 2013

NAME: Hambledon Park   CITY: Caterham-on-the Hill STATE: Surrey

ELEV: 620 LAT: 051:03:00 LONG: 0000:01:00

                            TEMPERATURE ( °C), RAIN (mm), WIND SPEED (mph)

                                               HEAT     COOL           AVG

      MEAN                                     DEG      DEG            WIND                       DOM

DAY   TEMP    HIGH   TIME     LOW    TIME      DAYS     DAYS    RAIN   SPEED    HIGH    TIME      DIR

----------------------------------------------------------------------------------------------------------------------------------------------------------

01    13.8    19.1   17:29    07.9   06:18     04.5     00.0    00.0   01.7     11.5    14:10      S

02    16.6    23.3   17:47    10.4   06:11     01.7     00.0    00.0   01.3     13.8    15:24      S

06    16.8    26.3   10:01    11.1   22:37     01.5     00.0    03.8   01.0     12.7    15:43     SSE

07    12.3    16.5   13:56    09.6   07:00     06.0     00.0    04.0   02.2     17.3    15:07      NW

08    11.3    15.6   13:55    09.0   00:00     07.0     00.0    03.2   01.8     14.9    13:40     NNW

09    10.9    13.8   13:55    07.8   02:24     07.4     00.0    06.0   00.9     10.3    08:34      NW

10    11.4    15.6   12:58    07.9   05:45     06.9     00.0    01.0   03.1     19.6    15:15      W

11    12.6    15.1   15:35    10.9   06:01     05.7     00.0    01.2   04.2     19.6    03:17     NNW

12    14.3    16.9   17:37    11.8   06:05     04.0     00.0    02.0   00.5     06.9    21:58     WNW

13    16.4    19.0   14:58    14.7   00:06     01.9     00.0    19.6   01.3     11.5    23:52      W

14    10.9    15.7   00:22    08.7   06:08     07.4     00.0    05.2   03.7     19.6    03:39     WSW

15    11.0    14.8   21:21    06.1   04:47     07.3     00.0    04.0   03.2     20.7    17:51      NW

16    09.8    13.7   13:09    06.9   00:00     08.5     00.0    00.2   03.8     17.3    11:56      W

17    10.5    14.6   21:06    06.6   02:16     07.8     00.0    12.2   02.9     11.5    19:50     WNW

18    11.6    15.1   13:33    08.3   00:00     06.7     00.0    01.0   02.4     12.7    14:23     WSW

19    11.4    15.1   18:19    07.8   03:11     06.9     00.0    01.0   02.2     21.9    12:38     WNW

20    12.5    16.8   13:07    09.1   06:00     05.8     00.0    00.2   01.1     11.5    11:34     SSE

21    13.6    17.3   14:30    09.3   03:52     04.7     00.0    00.0   01.2     11.5    12:15      SE

22    16.3    18.0   15:59    14.5   00:00     02.0     00.0    00.0   00.6     06.9    11:47      E

23    15.4    18.6   17:30    13.3   23:08     02.9     00.0    00.0   00.6     08.1    14:51     ENE

24    16.1    20.4   12:56    10.8   05:43     02.2     00.0    00.2   01.4     09.2    03:42      SE

25    15.9    20.1   15:17    12.1   04:03     02.4     00.0    02.4   00.4     06.9    12:52     ESE

26    14.4    17.3   14:50    11.7   23:58     03.9     00.0    00.0   00.8     09.2    13:56     ESE

30    12.6    16.6   13:31    10.5   04:36     05.7     00.0    00.0   01.2     09.2    22:56     ESE

----------------------------------------------------------------------------------------------------------------------------------------------------------

13.3 (13.6)   26.3  day 06     06.1  day 15   120.7    000.0   068.2   01.8     21.9   day 11      W

Min <=   30: 24

Max Rain: 19.6 ON 13-09-13

Days of Rain: 17 (> .2mm) 9 (> 2mm) 0 (> 20mm)