Epping Weather Station

Summary for Year 2009

Temperature °C
   Date or compared to 1971-2000 average
Mean Maximum
14.5
+1.1
Mean Minimum
7.1
+0.7
Overall Mean
10.8
+0.9
Highest Maximum
29.4
19th August
Lowest Maximum
-0.7
6th January
Highest Minimum
16.9
8th September
Lowest Minimum
-6.1
7th January
Lowest Grass Min
-12.0
6th January
Wind mph
Mean wind speed
5.2
Strongest Gust
43
Date
3rd Oct
Direction at 0900
N
NE
E
SE
S
SW
W
NW
CALM
No of mornings
45
28
50
12
59
56
95
13
7
Precipitation mm
 Date or compared to 1971-2000 average
Annual Total
672.7
102.7%
Wettest Day
32.3
6th August
Rain Days (>0.2mm)
167
Wet Days (>1mm)
108
Sunshine hours
Annual Total
1748.0
% Average
114.2
Days with no sun
36
Sunniest day
16.19
Date
2nd June
Number of days with
Air Frost
41
Ground Frost
75
Snow/sleet falling (0000-2400GMT)
22
>50% snow cover at 0900
19
Fog at 0900 (vis <1000m)
14
Thunder heard
15
Hail <5mm diameter
3
Hail > 5mm diameter
1

 
Miscellaneous Data
Mean Relative Humidity at 0900 (%)
81.3
Mean Air Pressure at 0900 (mb)
1013.7
Lowest Pressure
966.4mb
Date
23rd January
Highest Pressure
1037.8mb
Date
11th September
Hours of air frost
409.9
Mean soil temp °C (20cm depth)
10.5
Greatest snow depth (0900)
20cm
Date
2nd February pm
Particular days/events

Ice Days (Tmax < 0.01º) - 6th January, 9th January and 18th December
Days with >25mm rain - 6th August (32.3mm), 15th September (26.7mm) and 29th November (27.5mm)
3 cold spells 1-10 January with 3 days snow cover, 3days snow falling, max depth 2cm, 1-9 February with 9 days snow cover, 10 days snow falling and max depth 20cm on 2nd, and 14-25 December with 7 days snow cover, 8 days snow falling and max depth of 6cm.
23rd January - barometer reading of 966.4mb at 0610 was an unusually low value for this area

 

Year as a whole

.Every year since 1996 has been warmer than the 1971-2000 long term average. However both 2008 and 2009 were cooler than the preceding years 2002-2007

 

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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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