Epping Weather Station

Monthly Summary: May 2010(Daily Readings)

Temperature °C
   Date or compared to 1971-2000 average
Mean Maximum
16.2
+0.2
Mean Minimum
6.5
-0.9
Monthly Mean
11.4
-0.3
Highest Maximum
28.1
24th
Lowest Maximum
7.8
2nd
Highest Minimum
14.5
24th
Lowest Minimum
-0.6
12th
Lowest Grass Min
-1.7
12th
Wind mph
Mean wind speed
4.0
Strongest Gust
32
3rd
Dominant Direction
NE
 
N
NE
E
SE
S
SW
W
NW
CALM
No of mornings
12
7
2
0
3
2
5
0
0
Precipitation mm
 Date or compared to 1971-2000 average
Monthly Total
40.4
81.0%
Wettest Day
24.4
1st
Rain Days (>0.2mm)
8
Wet Days (>1mm)
5
Sunshine hours
Monthly Total
195.43
% Average
100.7
Days with no sun
2
Sunniest day
23rd
Hours
15.96
Number of days with
Air Frost
1
Ground Frost
3
Snow/sleet falling (0000-2400GMT)
0
>50% snow cover at 0900
0
Fog at 0900 (vis <1000m)
0
Thunder heard
0
Hail <5mm diameter
1
Hail > 5mm diameter
1

 
Miscellaneous Data
Mean Relative Humidity at 0900 (%)
69.8
Mean Air Pressure at 0900 (mb)
1017.5
Lowest Pressure (mb) 1005.5 Date
20th
Highest Pressure (mb) 1032.5 Date
20th
Hours of air frost
2.9
Mean soil temp °C (20cm depth)
12.8
Greatest snow depth (0900)
--
Date
--
Particular days/events

1st 24.4mm rain, 3rd wettest May day on record
2nd Tmax 7.8º, lowest May maximum temperature since 1/5/98 and 4th coldest May day on record
12th Tmin -0.6º, coldest May night on record and only second air frost recorded in May
24th Tmax 28.1, second warmest May day on record, after 27/5/05 with 32.1º

 

Month as a whole

A particularly wet and cold start but warmed up by the end of the month
Coolest May since1996 although since the late 1990's May has generally been warmer than the 1971-2000 long term average

 

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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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