Epping Weather Station

Monthly Summary: April 2009(Daily Readings)

Temperature °C
   Date or compared to 1971-2000 average
Mean Maximum 15.8 +3.6
Mean Minimum 6.2 +2.1
Monthly Mean 11.0 +2.9
Highest Maximum 20.7 21st
Lowest Maximum 9.9 27th
Highest Minimum 10.7 16th
Lowest Minimum 3.1 29th
Lowest Grass Min -0.3 1st
Wind mph
Mean wind speed
4.1
Strongest Gust
26
8th
Dominant Direction
SSW
Direction at 0900
N
NE
E
SE
S
SW
W
NW
CALM
No of mornings 4 3 5 4 8 0 5 1 0
Precipitation mm
 Date or compared to 1971-2000 average
Monthly Total 20.3 40.4%
Wettest Day 6.6 16th
Rain Days (>0.2mm) 9
Wet Days (>1mm) 6
Sunshine hours
Monthly Total
195.41
% Average
130.3
Days with no sun
3
Sunniest day
13.40
Hours
22nd
Number of days with
Air Frost
0
Ground Frost
1
Snow/sleet falling (0000-2400GMT)
0
>50% snow cover at 0900
0
Fog at 0900 (vis <1000m)
2
Thunder heard
0
Hail <5mm diameter
0
Hail > 5mm diameter
0

 
Miscellaneous Data
Mean Relative Humidity at 0900 (%) 79.1
Mean Air Pressure at 0900 (mb) 1013.4
Lowest Pressure (mb) 994.1
Date
 27th
Highest Pressure (mb) 1027.8
Date
 20th
Hours of air frost 0
Mean soil temp °C (20cm depth) 10.2
Greatest snow depth (0900)
n/a
Date
n/a
Particular days/events

11th and 12th Fog/low cloud at 0900
27th A cool, cloudy and wet day.Notable barograph trace at passage of front from west at 1230

 

Month as a whole

Dry, sunny and warm
The second warmest April on record here (since records began in 1979)
Mean maximum temperature second warmest on record
Every April since 1991 has been warmer than the 1971-2000 long term average
The lowest daily maximum and minimum temperatures were the highest such values since records began

 

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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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