ECN Rothamsted (ECN AWS T06 02, Harpenden)  
The Weather : Monthly Summary : 2026  
(Departure from the 30 year means (1991 - 2020) in brackets)  
                               
  Sunshine Mean Temperatures, °C Rain Drainage Wind ***
      Maximum Minimum Dew point Ground In ground under grass Tipping Bucket 20"  
                frosts* 10 cm 30 cm Total days** Total  
  Hours (hours) °C (°C) °C (°C) °C # °C °C mm (mm ) # mm km/hr
January 60.6 (-3.26) 6.9 (-0.17) 1.3 (-0.25) 2.9 18 3.8 5.9 97.9 (+23.79) 25 69.6 8.2
February                              
March                              
April                              
May                              
June                              
July                              
August                              
September                              
October                              
November                              
December                              
                               
Year                              
                               
* Number of nights grass minimum was below 0.0 °C                    
** Number of days rain was 0.2 mm or more                    
*** At 2 metres above the ground