Epping Weather Station

Monthly Summary: January 2012 (Daily Readings)

 

Temperature °C
   Date or compared to 1981-2010 average
Mean Maximum
8.2
+1.5
Mean Minimum
3.1
+1.2
Monthly Mean
5.7
+1.4
Highest Maximum
11.9
1st
Lowest Maximum
0.9
31st
Highest Minimum
10.2
1st
Lowest Minimum
-2.2
31st
Lowest Grass Min
-6.0
14th
Wind mph
Mean wind speed
6.8
Strongest Gust
49
Date
3rd
Dominant Direction
SW
Direction at 0900
N
NE
E
SE
S
SW
W
NW
CALM
No of mornings 3 1 4 1 5 7 10 0
0
Precipitation mm
 Date or compared to 1981-2010average
Monthly Total
39.6
63.9%
Wettest Day (09-09)
8.4
3rd
Rain Days (>0.2mm)
15
Wet Days (>1mm)
11
Sunshine hours
Monthly Total
75.01
% Average
116.5
Days with no sun
7
Sunniest day
7.90
Date
27th
Number of days with
Air Frost
7
Ground Frost
13
Snow/sleet falling (0000-2400GMT)
1
>50% snow cover at 0900
0
Fog at 0900 (vis <1000m)
1
Thunder heard
0
Hail <5mm diameter
2
Hail > 5mm diameter
1

 
Miscellaneous Data
Mean Relative Humidity at 0900 (%)
89.2
Mean Air Pressure at 0900 (mb)
1019.7
Lowest Pressure 992.9
Date
3rd
Highest Pressure 1033.1
Date
13th
Hours of air frost
38.4
Mean soil temp °C (20cm depth)
5.3
Greatest snow depth (0900)
-
Date
-
Particular days/events

3rd Passage of cold front at 1120 accompanied by sharp blip in barograph trace with temporary rise in pressure of 3.5mb and heavy rain for 3 minutes. The temperature fall by 5degC,, wind veered from SSW to NNW and then settled at WSW. Gust to 46mph
3rd Gust to 49mph at 1550
29th Thick fog at 0900
31st Period of snow grain from 0900-1330 produce thin covering of snow. The only snow cover for this month

 

Month as a whole

Warmest January since 2008, driest since 2006.
After 3 years with January temperatures close to or below average this January resumes the warmer than average trend which began in 2002

 

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(amended January 2009)

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