The group, which runs a fleet of about 2,500 Eddie Stobart trucks, said the prolonged summer heatwave which followed the coldest spring in more than 50 years caused spikes in retail volumes. Stobart also announced its fourth chairman in seven months, with former Tate & Lyle boss Iain Ferguson taking up the role in October.
Stobart said it had made solid progress in the six months to the end of August, despite the volatile weather. It said: "Managing unforeseen volatility is challenging, but the investment we have made in our planning systems allows us to meet our customers' needs."
The Carlisle-based group has more than six million square feet of storage facilities, located around major transport hubs across the UK and Europe. Its estates arm is focused on sales of mature assets.
The firm's air division is focused on boosting passenger numbers at London Southend Airport.
Stobart added that tonnage, revenues and profits are ahead of last year in its biomass business.