Weather Data - July 2009

July 2009
Times indicate the end of a measurement period (BST)
Maximum Temperature 33.4 ēC 01-Jul-09    1:45 PM
Minimum Temperature 9.5 ēC 10-Jul-09    1:45 AM
Mean (15 min) 16.5 ēC -0.2 from average
Mean (Max Min) 17.4 ēC 0.7 from average  (calculated from 0901 to 0900 GMT data)
Mean Max 22.4 ēC 1.9 from average  (calculated from 0901 to 0900 GMT data)
Mean Min 12.4 ēC 0.4 from average  (calculated from 0901 to 0900 GMT data)
Lowest Max 16.4 ēC 29-Jul-09
Highest Min 16 ēC 02-Jul-09
Air Frosts 0 0 hours of Frost duration
Maximum Station Pressure 1024 hPa 30-Jul-09    9:00 PM
Minimum Station Pressure 1000 hPa 22-Jul-09    2:00 AM
Mean 1012.6 hPa
Mean of 09Z values 1012.5 hPa
Rainfall 103.8 mm 159.7% of average
Wettest 24hr 22.8 mm 21-Jul-09 2:30 PM
Wettest Calendar Day 16.8 mm 29-Jul-09 (calculated from 0901 to 0900 following day)
Rain Days ( > 0.3mm) 19 days (calculated from 0901 to 0900 GMT data)
Wet Days (>1.0mm) 15 days (calculated from 0901 to 0900 GMT data)
Wet Days (>5.0mm) 9 days (calculated from 0901 to 0900 GMT data)
Max 15min accum 2.1 mm 21-Jul-09    5:15 AM
Rain Duration 53.25 hours
Longest Dry period 6.96 days 07-Jul-09 4:45 AM 167.00 (hours)
Longest Wet period (>0.3mm / 15 mins) 4.75 hours 29-Jul-09 11:45 AM
Sunshine Hours (>30klux) 174.25 hours 83.0% of average
Max Sunshine 9.50 hours 03-Jul-09 (calculated from 0901 to 0900 following day)
Sunshine Hours (>50%) 160 hours 76.2% of average
Max Sunshine 10.25 hours 03-Jul-09 (calculated from 0901 to 0900 following day)
Brightest Calendar Day 34.6 klux 08-Jul-09 (calculated from 0901 to 0900 following day)
Sunless Days 5 days (calculated from 0901 to 0900 GMT data)
Maximum Brightness (klux) 120 klux 14-Jul-09    2:00 PM
Average Wind Speed #DIV/0! knots #DIV/0! mph
Maximum Wind Speed 0 knots #N/A #N/A 0.0 mph
Days with wind from: (calculated from 0901 to 0900 GMT data)
Calm 31
N 0
NE 0
E 0
SE 0
S 0
SW 0
W 0
NW 0
Average RH (at 09Z) 78.9

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