Weather Data - November 2009

November 2009
Times indicate the end of a measurement period (BST)
Maximum Temperature 18 ēC 20-Nov-09   10:45 AM
Minimum Temperature -2.6 ēC 01-Dec-09    5:15 AM
Mean (15 min) 9.5 ēC 2.0 from average
Mean (Max Min) 10.1 ēC 2.6 from average  (calculated from 0901 to 0900 GMT data)
Mean Max 13.4 ēC 2.9 from average  (calculated from 0901 to 0900 GMT data)
Mean Min 6.7 ēC 2.2 from average  (calculated from 0901 to 0900 GMT data)
Lowest Max 10 ēC 30-Nov-09
Highest Min 13.1 ēC 01-Nov-09
Air Frosts 1 10.75 hours of Frost duration
Maximum Station Pressure 1022 hPa 31-Oct-09   10:00 AM
Minimum Station Pressure 974 hPa 29-Nov-09    7:45 AM
Mean 1001.6 hPa
Mean of 09Z values 1001.2 hPa
Rainfall 300.6 mm 207.3% of average
Wettest 24hr 37.2 mm 14-Nov-09 9:30 AM
Wettest Calendar Day 31.5 mm 13-Nov-09 (calculated from 0901 to 0900 following day)
Rain Days ( > 0.3mm) 28 days (calculated from 0901 to 0900 GMT data)
Wet Days (>1.0mm) 27 days (calculated from 0901 to 0900 GMT data)
Wet Days (>5.0mm) 16 days (calculated from 0901 to 0900 GMT data)
Max 15min accum 3.9 mm 01-Nov-09    7:15 AM
Rain Duration 121.25 hours
Longest Dry period 2.03 days 01-Dec-09 12:15 PM 48.75 (hours)
Longest Wet period (>0.3mm / 15 mins) 6.75 hours 23-Nov-09 8:30 AM
Sunshine Hours (>30klux) 40.50 hours 57.9% of average
Max Sunshine 3.25 hours 05-Nov-09 (calculated from 0901 to 0900 following day)
Sunshine Hours (>50%) 80.25 hours 114.6% of average
Max Sunshine 5.00 hours 05-Nov-09 (calculated from 0901 to 0900 following day)
Brightest Calendar Day 8.3 klux 04-Nov-09 (calculated from 0901 to 0900 following day)
Sunless Days 6 days (calculated from 0901 to 0900 GMT data)
Maximum Brightness (klux) 59.4 klux 01-Nov-09    1:15 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) 82.2

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