Epping Weather Station

Monthly Summary: December 2004 (Daily Readings)

Temperature °C
   Date or compared to 1971-2000 average
Mean Maximum
7.9
+0.8
Mean Minimum
2.6
-0.1
Monthly Mean
5.3
+0.4
Highest Maximum
12.1
23rd, 31st
Lowest Maximum
2.7
26th
Highest Minimum
8.3
16th, 31st
Lowest Minimum
-2.9
26th
Lowest Grass Min
-5.0
26th
Wind mph
Mean wind speed
6.6
Strongest Gust
33
Date
17th
Dominant Direction
W
Direction at 0900
N
NE
E
SE
S
SW
W
NW
CALM
No of mornings
2
2
2
1
2
5
14
1
2
Precipitation mm
 Date or compared to 1971-2000 average
Monthly Total 34.3
59.5%
Wettest Day (09-09) 12.7
17th
Rain Days (>0.2mm)
11
Wet Days (>1mm)
5
Sunshine hours
Monthly Total
52.0
% Average
116
Days with no sun
10
Sunniest day
7.04
Date
28th
Number of days with
Air Frost
6
Ground Frost
14
Snow/sleet falling (0000-2400GMT)
0
>50% snow cover at 0900
0
Fog at 0900 (vis <1000m)
4
Thunder heard
0
Hail <5mm diameter
0
Hail > 5mm diameter
0

 
Miscellaneous Data
Mean Relative Humidity at 0900 (%)
93
Mean Air Pressure at 0900 (mb)
1018.0
Lowest Pressure 987.9
Date
17th
Highest Pressure 1031.5
Date
8th
Hours of air frost
37.2
Mean soil temp °C (20cm depth)
6.4
Greatest snow depth (0900)
n/a
Date
Particular days/events

The 2nd December saw thick persistent fog throughout the day, an unusual event for this location

 

 

 

Month as a whole
A rather mild and dry month with 82% of the month's rainfall falling on just 3 days, the 17th, 21st and 27th.
The first half of the month saw dull weather with only 5 hours of sunshine, whereas the second half of the month had 47 hours of sunshine
No snow fell at all in December 2004. The last December without snow was in 1994.

 

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