ladbrokes offering 4/6 on spring 2015 being warmest on record and 2/1 on this summer being the hottest ever .
today will be cloudy in central and eastern uk with chance of showers , but it will be dry and bright elsewhere .
forecasters say temperatures in the south could reach 17c tomorrow , 21c on tuesday and 23c on wednesday .
but five environment agency flood alerts are in place for devon , cornwall , somerset , bristol and lancashire .