Epping Weather Station

Monthly Summary: January 2011 (Daily Readings)

 

Temperature °C
   Date or compared to 1981-2010 average
Mean Maximum
6.2
-0.5
Mean Minimum
2.4
+0.5
Monthly Mean
4.3
0.0
Highest Maximum
12.6
13th
Lowest Maximum
0.7
28th
Highest Minimum
10.8
14th
Lowest Minimum
-2.1
30th
Lowest Grass Min
-5.6
30th, 31st
Wind mph
Mean wind speed
5.9
Strongest Gust
32
Date
8th
Dominant Direction
N
Direction at 0900
N
NE
E
SE
S
SW
W
NW
CALM
No of mornings
8
4
2
0
6
5
5
1
0
Precipitation mm
 Date or compared to 1981-2010average
Monthly Total
79.1
127.7%
Wettest Day (09-09)
18.8
17th
Rain Days (>0.2mm)
21
Wet Days (>1mm)
12
Sunshine hours
Monthly Total
33.26
% Average
63.4
Days with no sun
15
Sunniest day
7.19
Date
9th
Number of days with
Air Frost
7
Ground Frost
16
Snow/sleet falling (0000-2400GMT)
3
>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 (%)
90.9
Mean Air Pressure at 0900 (mb)
1017.4
Lowest Pressure 986.3
Date
8th
Highest Pressure 1038.8
Date
21st
Hours of air frost
48.0
Mean soil temp °C (20cm depth)
4.4
Greatest snow depth (0900)
-
Date
-
Particular days/events

3 days with snow falling in showers, 3rd, 6th, 27th
17th 18.8mm rain, the wettest January day since 26/1/2001

 

Month as a whole

Dull and wet with the monthly mean temperature equal to the 1981-2010 average
A big contrast to the preceding month and to January 2010
Wettest January since 1999
Least sunshine since sunshine recording began here in 2002
Since July 2010 every month has recorded below normal sunshine totals

 

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(amended January 2009)

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