Monthly Climate Summary for September 1999 at Milhaguet (Carreau)
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           Dry, sunny and hot until the 12th, then cool and cloudy with heavy rain at times Back Forward
                       
Overall mean temperature was 16.9 ēC which is +0.7 degC compared with the 1971-2000 average
Mean day maximum (09-21) was 22.1 ēC which is -1.1 degC compared with the 1971-2000 average
Mean night minimum (21-09) was 11.7 ēC which is +2.5 degC compared with the 1971-2000 average
Mean 24hr maximum (09-09) was 22.1 ēC              
Mean 24hr minimum (09-09) was 11.7 ēC              
  Highest day max was 29.7 ēC on  the   11          
  Lowest day max was 13.5 ēC on  the 20          
  Highest night min was 15.1 ēC on  the 2          
  Lowest night min was 5.7 ēC on  the 16          
  Lowest grass min was 5.5 ēC on  the 16          
                       
Total rainfall this month was 97.9 mm which is 107.6% per  cent of the 1971-2000 average  
  Highest daily fall was 19.1 mm on  the 13          
Number of hours with rain was 0.0 hrs              
Equiv. TSR rainfall duration was 0.0 hrs which is   per  cent of the 1971-2000 average  
  Highest no of wet hrs 0.0 hrs on  the            
  Highest equiv duration 0.0 hrs on  the            
                       
Total sunshine this month was 138.5 hrs which is 76.1% per  cent of the 1971-2000 average  
Equiv. C/S sunshine total was 152.4 hrs which is 76.1% per  cent of the 1971-2000 average  
  Highest daily sun was 9.7 hrs on  the 1          
                       
Maximum  snow depth  was 0.0 cm on  the             
                       
Mean sea-level pressure at 09Z   mbar which is   mbar compared with the 1961-1990 average
  Highest pressure at 09Z   mbar on  the            
  Lowest  pressure at 09Z mbar on  the            
                       
Number of days with:                    
Air Frost 0   0.2mm rain 17   No  sun 0   Snow lying 0  
Grnd Frost 0   1.0mm 11   3h  sun 19   Snow/sleet 0  
Max < 0ēC 0   5mm 8   6h  sun 10   Hail 0  
Max > 10 30   10mm 3   9h  sun 2   Thunder 0  
Max > 20 18   25mm 0   12h sun 0   Fog at 09Z 0  
Max > 30 0   50mm 0   15h sun 0   Gale 0  
                       
Notable events during the month: