Epping Weather Station

Monthly Summary: September 2004 (Daily Readings)

Temperature °C
   Date or compared to 1971-2000 average
Mean Maximum
19.9
+2.0
Mean Minimum
11.5
+1.4
Monthly Mean
15.7
+1.7
Highest Maximum
26.8
4th
Lowest Maximum
13.8
24th
Highest Minimum
16.0
11th
Lowest Minimum
5.4
25th
Lowest Grass Min
3.3
25th
Wind mph
Mean wind speed
5.0
Strongest Gust
40.0
Date
14th
Dominant Direction
W
Direction at 0900
N
NE
E
SE
S
SW
W
NW
CALM
No of mornings
3
0
6
2
1
0
17
0
1
Precipitation mm
 Date or compared to 1971-2000 average
Monthly Total
24.5
38%
Wettest Day
5.3
30th
Rain Days (>0.2mm)
14
Wet Days (>1mm)
8
Sunshine hours
Monthly Total
174.3
% Average
123
Days with no sun
1
Sunniest day
12.56
Date
1st
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
0
Hail <5mm diameter
0
Hail > 5mm diameter
0

 
Miscellaneous Data
Mean Relative Humidity at 0900 (%)
79
Mean Air Pressure at 0900 (mb)
1018.4
Lowest Pressure
998.4
Date
14th
Highest Pressure
1033.9
Date
7th,8th
Hours of air frost
0
Mean soil temp °C (20cm depth)
15.3
Greatest snow depth (0900)
n/a
Date
Particular days/events
1st-11th, all days had maximum temperature greater than 21°C with 62% of the
month's total sunshine in that period
31st was the first sunless day since 1st June

 

 

Month as a whole
Second warmest September since records began in 1979. (2003 was just warmer,
by 0.1°C)

 

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