Like the rest of the lower Rhineland, D�sseldorf has cold winters and warm summers, with an average yearly temperature of 23.5 �C (74 �F) and about 77 centimetres (30 in) of rainfall. The dominant wind direction is from the south or southeast with velocities in the range of 3 to 4 m/s (7�9 mph), with gusts of 3.5 ?4.8 m/s (8�10.7 mph). The wind is calm (defined as being under 2 m/s or 4.5 mph) about 35% of the time, more frequently at night and in the winter
