Epping Weather Station

Monthly Summary: September 2003 (Daily Readings)

Temperature °C
   Date or compared to 1971-2000 average
Mean Maximum 21.5
+3.6
Mean Minimum 10.0
-0.1
Monthly Mean 15.8
+1.8
Highest Maximum 27.6
17th
Lowest Maximum 14.4
23rd
Highest Minimum 14.2
22nd
Lowest Minimum 4.2
24th
Lowest Grass Min 2.8
24th
Wind mph
Mean wind speed
2.3
Strongest Gust
32
Date
22nd
Dominant Direction
W
Direction at 0900
N
NE
E
SE
S
SW
W
NW
CALM
No of mornings
5
0
7
3
1
0
8
3
3
Precipitation mm
 Date or compared to 1971-2000 average
Monthly Total 24.6
38
Wettest Day 14.9
22nd
Rain Days (>0.2mm)
9
Wet Days (>1mm)
5
Sunshine hours
Monthly Total 233.2
% Average
155
Days with no sun
0
Sunniest day
12.65
Date
4th
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 (%)
72
Mean Air Pressure at 0900 (mb)
1020.0
Lowest Pressure 1000 Date
22nd
Highest Pressure 1031 Date
13th
Hours of air frost
0
Mean soil temp °C (20cm depth)
14.2
Greatest snow depth (0900)
n/a
Date
  
Particular days/events

Mid afternoon on the 22nd saw a cold front move through from the NW. After a maximum temperature of 21.1°C at 1200 the temperature fell from 18.6°C to 10.8°C between 1500 and 1600. A total of 11.6mm of rain fell in this hour with 5.3mm in the 10 minute period from 1510. The wind direction changed from WSW to NNE and there was a gust to 32mph.
A pale-brown dust fall was evident on cars and windows at 0900 observation on the 6th. Showers had fallen on the 5th from 2100 to 2320.
(All times GMT)

 

 

Month as a whole
Warmest September since records began here in 1979. Mean maximum also warmest since records began. Mean minimum was the coldest since 1996. Driest September since 1997.

 

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