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JUNE 2008 daily and monthly summary

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JUNE 2008
July 2008

1st - 7th
HP to N, slack LPs to E and S, the month starts cloudy but bright. On the 2nd, 4 LP centres encircle the UK bringing a dull day with light rain by the evening. Another dull day 3rd with drizzle. A weak ridge of HP extends toward the far SW on 4th and 5th. Occlusion approaches slowly from E on the 6th giving rain and drizzle late pm and early evening.
7th - 11th
HP starts to influence the UK briefly bringing three fine days before retreating westward. With one LP over Norway and Sweden, and another over Belgium a cooler N'ly airflow sets in on the 11th. Light to moderate rain early hours of 12th with a sharp shower in mid morning.
12th - 18th
Occlusion brings light to moderate rain early hours of 12th with one sharp shower in mid morning. On 13th, HP to W of Iceland and slack LP over the North Sea continues the N'ly airflow. By 16th a weak ridge of HP over the UK with LP to N and S, LP to W of Scotland on the 18th.
19th - 20th
Light rain early hours of 19th, by the 20th the UK is again almost surrounded by LPs.
28th - 30th
HP over Southern Brittany, drifting towards Germany while weakening slightly. LPs to NW and N.

MONTHLY SUMMARY
ACTUAL TEMPERATURE
 AVERAGE
 Daily Maximum
20.3
 ºC ( -0.1C )*
 Daily Minimum
11.3
 ºC ( +0.2 C )*
 Daily Mean
15.5
 ºC ( +0.2C )*
 EXTREMES
 High Maximum
27.0
 ºC (   9th )
 Low Minimum
8.3
 ºC ( 13th )
 Low Maximum
14.5
 ºC ( 12th )
 High Minimum
15.6
 ºC ( 28th )
 
   
 Days with max => 25 °C
1
   
 Days with max in range 20 - 25 °C
16
   
 Days with max < 20 °C
13
   
 
PRECIPITATION
 Monthly Total
21.0
 mm ( 47% )*
 Days with measurable precip
11
 Days ( ±0 )*
   ...of which, days with >= 1.0 mm
5
 Days ( -3 )*
   
   
 Days with hail
0
 Days  
 Days with Thunder
0
 Days  
 RAIN RATE & EXTREMES
 High Rain Rate
11.2
 mm/hr ( 12th )
 High Rain Total in 1 day
11.7
 mm ( 12th )
 High Rain Total in 1 hour
3.8
 mm ( 12th, 03.30h)
 EVAPO-TRANSPIRATION
 Total for month
99.2
 mm  
 High Total for 1 day
4.9
 mm ( 22nd )
APPARENT TEMPERATURE
 Low Wind Chill
8.3
 ºC ( 13th )
 DAVIS HEAT INDICES THW & THSW
 Low Temp/Hum/Wind Index
8.3
 ºC ( 13th )
 High Temp/Hum/Wind Index
25.9
 ºC (   9th )
 High Temp/Hum/Sun/Wind Index
31.9
 ºC (   9th )
 
DEWPOINT & HUMIDITY
 High Dewpoint
15.1
 ºC ( 27th )
 Low Dewpoint
1.4
 ºC ( 15th )
 Average Dewpoint at 14h
9.3
 ºC  
 Low Relative Humidity
31
 % (  9th )
 Average RH at 14h
55
 %  
WIND SPEED & DIRECTION
 Monthly Average
2.1
 mph  
 Windiest day (Average)
5.7
 mph ( 22nd )
 Highest Gust
27
 mph ( 22nd )
 Dominant Direction
SSW
 ( 39% )
 
BAROMETER
 Monthly Mean
1015.7
 hPa  
 High Barometer
1024.7
 hPa (  9th )
 Low Barometer
1004.4
 hPa ( 19th )
SUNSHINE
 Max Sensor Exposure to direct sun
10
 hours/day ( 15 possible)
 Calculated Monthly Sunshine Hours
156.3
 hours  
 Estimated Actual Hours (approx)
190.0
 hours  
 Sunniest Day Measured
9.7
 hours ( 5th )
 Days with no sunshine
0
 Days  
 
FOG
 Number of Days with Fog
0
 Days  
NEW RECORDS SET THIS MONTH
  • Windiest June day (22nd)
* deviation from average 1984 - 2007
‡ SUN: Sunshine hours are calculated approximately and solely from solar radiation readings, but note that the solar sensor's exposure to sunshine is limited. The sensor receives only up to 70% of total possible sunshine exposure this month due to obstruction. There is no allowance for sunshine by visual observation only, so the sunniest day figures above can be very significantly less than the actual daily sunshine duration.
THW = Shaded Heat Index calculated with cooling/warming effect of wind and humidity to give an apparent temperature.
THSW = Unshaded Heat Index calculated with cooling/warming effect of wind, humidity and full direct sunshine to give an apparent temperature.
EVAPO-TRANSPIRATION is drying effect due to sun and wind, and is equivalent to "negative rainfall"


   DAILY STATS JUNE 2008
 
TEMPERATURE ºc
HUMIDITY
SUN ‡
PRESSURE
RAINFALL
WIND SPEED
DIRECTION
DATE
Minimum
(21-09h)
Maximum
(09-21h)
Temp at 14.00z
RH %
at 14.00z
Dewpoint ºc
at 14.00z
Bright
sun hrs
hPa   †
at 14.00z
Day Total
(mm)
Average
(mph)
High Gust
(mph)
Dominant
(Compass)
                     
1st
12.8 18.4 17.6 67 11.4 1.5 1013.4 fs 0.0 0.5 8 N
2nd
10.2 16.7 16.0 84 13.3 0.3 1011.2 fs 0.8 0.4 8 ESE
3rd
13.2 18.7 16.4 75 11.9 0.3 1011.6 r 1.0 1.2 16 N
4th
10.6 20.8 19.9 48 8.6 8.0 1015.6 st 0.3 1.5 16 SSW
5th
8.4 21.4 19.2 51 8.3 9.7 1014.9 fs 0.0 1.5 12 SSW
6th
10.4 17.5 16.9 69 11.2 1.0 1015.4 rs 3.0 0.8 10 SSW
7th
10.9 17.8 17.1 62 9.8 2.5 1018.0 st 0.3 1.8 13 N
8th
13.0 24.8 21.6 61 13.8 8.5 1022.2 st 0.0 1.2 11 N
9th
12.2 27.0 26.7 33 9.1 9.2 1023.9 fs 0.0 0.6 10 NNW
10th
12.2 23.4 22.6 53 12.5 5.7 1022.1 fs 0.0 1.5 12 N
11th
11.8 20.2 18.8 46 7.0 2.0 1021.4 f 0.0 1.6 16 N
12th
10.4 14.5 13.2 65 6.8 1.5 1016.5 rs 11.7 2.1 18 N
13th
8.3 17.5 17.1 43 4.4 5.8 1015.5 fs 0.0 1.4 13 W
14th
10.2 18.7 17.9 41 4.5 4.0 1013.7 fs 0.0 1.7 13 SSW
15th
10.1 18.3 16.4 44 4.1 4.7 1009.5 fs 0.0 1.2 11 N
16th
8.9 20.5 15.6 65 9.1 3.7 1010.6 st 0.0 0.8 12 SE
17th
9.4 20.4 20.1 36 4.5 9.3 1011.1 st 0.0 2.7 17 SSW
18th
10.1 18.4 17.1 58 8.8 2.0 1012.2 fs 0.0 3.6 22 SSW
19th
12.8 19.9 18.4 55 9.2 6.3 1010.3 r 0.5 4.6 21 SSW
20th
11.1 19.4 17.8 54 8.4 4.0 1017.4 st 0.3 2.6 16 SSW
21st
12.3 19.9 18.7 66 12.2 1.0 1016.2 fs 1.3 1.9 14 SSW
22nd
16.3 20.6 19.6 53 9.7 9.0 1010.0 rs 0.0 5.7 27 SSW
23rd
10.2 21.6 20.9 42 7.5 7.8 1019.1 st 0.0 2.2 11 SSW
24th
9.8 24.4 23.9 35 7.5 8.7 1015.5 f 0.0 1.0 16 ESE
25th
12.3 21.3 20.6 57 11.8 8.0 1014.7 rs 0.0 3.5 21 SSW
26th
9.9 20.7 20.4 49 9.3 9.2 1018.3 fs 0.8 3.7 21 SSW
27th
13.4 20.2 18.7 79 14.9 1.5 1017.8 fs 1.0 4.1 21 SSW
28th
15.6 23.6 23.4 44 10.5 8.3 1016.6 st 0.0 4.1 19 SSW
29th
12.5 21.2 20.5 52 10.3 4.5 1016.3 st 0.0 3.0 19 SSW
30th
10.6 21.8 20.1 51 9.7 8.3 1020.2 st 0.0 1.9 14 SSW
                       
‡ SUN: Sunshine hours are calculated approximately and solely from solar radiation readings, but note that the solar sensor's exposure to sunshine is rather limited. The sensor receives approx 65% of total possible sunshine exposure this month, and there is no allowance for sunshine by visual observation only, so the figures above can be very significantly less than the actual daily sunshine duration.
† Barometer trend (previous 3 hours) : f = falling, st = steady, r = rising; q = quickly, s = slowly