Weather Data - September 2007

September 2007
Times indicate the end of a measurement period (BST)
Maximum Temperature 30.5 ēC 07-Sep-07   12:00 PM
Minimum Temperature 3.7 ēC 27-Sep-07    5:00 AM
Mean (15 min) 15.5 ēC 1.3 from average
Mean (Max Min) 16.5 ēC 2.3 from average  (calculated from 0901 to 0900 GMT data)
Mean Max 22.5 ēC 5.0 from average  (calculated from 0901 to 0900 GMT data)
Mean Min 10.7 ēC 0.7 from average  (calculated from 0901 to 0900 GMT data)
Lowest Max 16.7 ēC 28-Sep-07
Highest Min 15.6 ēC 21-Sep-07
Air Frosts 0 0 hours of Frost duration
Maximum Station Pressure 1033 hPa 06-Sep-07    9:45 AM
Minimum Station Pressure 1003 hPa 24-Sep-07    3:45 AM
Mean 1021.9 hPa
Mean of 09Z values 1022.1 hPa
Rainfall 47.1 mm 47.1% of average
Wettest 24hr 21 mm 01-Oct-07 2:45 AM
Wettest Calendar Day 14.7 mm 30-Sep-07 (calculated from 0901 to 0900 following day)
Rain Days ( > 0.3mm) 11 days (calculated from 0901 to 0900 GMT data)
Wet Days (>1.0mm) 7 days (calculated from 0901 to 0900 GMT data)
Wet Days (>5.0mm) 3 days (calculated from 0901 to 0900 GMT data)
Max 15min accum 3.6 mm 30-Sep-07    4:30 AM
Rain Duration 17.25 hours Rain gauge unblocked on 22nd Sept - Added 3.9mm and 3 rain days to automatic data.
Longest Dry period 22.18 days 22-Sep-07 10:15 AM 532.25 (hours)
Longest Wet period (>0.3mm / 15 mins) 3.25 hours 01-Oct-07 12:00 AM
Sunshine Hours (>30klux) 139.50 hours 96.2% of average
Max Sunshine 9.75 hours 04-Sep-07 (calculated from 0901 to 0900 following day)
Sunshine Hours (>50%) 187 hours 129.0% of average
Max Sunshine 10.75 hours 04-Sep-07 (calculated from 0901 to 0900 following day)
Brightest Calendar Day 26.1 klux 03-Sep-07 (calculated from 0901 to 0900 following day)
Sunless Days 0 days (calculated from 0901 to 0900 GMT data)
Maximum Brightness (klux) 104 klux 02-Sep-07    2:15 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 30
N 0
NE 0
E 0
SE 0
S 0
SW 0
W 0
NW 0
Average RH (at 09Z) 80.4

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