Epping Weather Station

Monthly Summary: September 2009 (Daily Readings)

Temperature °C
   Date or compared to 1971-2000 average
Mean Maximum 19.1
+1.2
Mean Minimum 11.2
+1.1
Monthly Mean 15.1
+1.1
Highest Maximum 27.5
8th
Lowest Maximum 14.9
15th
Highest Minimum 16.9
8th
Lowest Minimum 7.8
10th
Lowest Grass Min 5.3
27th
Wind mph
Mean wind speed
4.7
Strongest Gust
40
Date
3rd
Dominant Direction
NE
Direction at 0900
N
NE
E
SE
S
SW
W
NW
CALM
No of mornings
7
4
3
0
2
2
11
1
0
Precipitation mm
 Date or compared to 1971-2000 average
Monthly Total
42.9
66.2%
Wettest Day
26.7
15th
Rain Days (>0.2mm)
5
Wet Days (>1mm)
3
Sunshine hours
Monthly Total
158.93
% Average
111.1%
Days with no sun
1
Sunniest day
11.47
Date
12th
Number of days with
Air Frost
0
Ground Frost
0
Snow/sleet falling (0000-2400GMT)
0
>50% snow cover at 0900
0
Fog at 0900 (vis <1000m)
0
Thunder heard
1
Hail <5mm diameter
0
Hail > 5mm diameter
0

 
Miscellaneous Data
Mean Relative Humidity at 0900 (%)
80.4
Mean Air Pressure at 0900 (mb)
1022.3
Lowest Pressure 992.4
Date
3rd
Highest Pressure 1037.8
Date
11th
Hours of air frost
0
Mean soil temp °C (20cm depth)
14.3
Greatest snow depth (0900)
n/a
Date
Particular days/events

8th Maximum temperature of 27.5º making this the 5th warmest September day on record here
15th 26.7mm of rain making this the 6th wettest September day on record
19th Thunder at 2345z

 

 

Month as a whole

Warmest September since 2006
90% of the monthly rainfall fell on just 2 days (2nd and15th)
7 out of the last 8 Septembers have been drier than the 1971-2000 average
Despite the below average rainfall here surrounding areas were much drier
2009 Rainfall total January-September is 415.5mm (87%)

 

 

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The data on this website may be freely used for personal and/or academic purposes only - please acknowledge source in publication
(amended January 2009)

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