High winds and torrential rain brought flooding, tree falls and car crashes across Epsom over the past week.
Flood alerts were issued by the Environment Agency on Wednesday and Sunday last week for the River Mole and its tributaries.
Flooding could be seen under the bridge on West Street, one of the main roads in and out of Epsom, causing traffic disruption.
During Sunday's rain a man, believed to be in his 30s, had to be cut from his car and taken to hospital following a head-on smash with a recovery vehicle on Reigate Road, Epsom, at 5.30am.
It is understood his car hit a stationary vehicle which was helping another motorist who had broken down.
Later that day, at just after 1.30pm, two cars collided on Headley Road in Epsom Downs, and four people were taken to St George’s Hospital, Tooting, with non-fatal injuries.
An emergency helicopter and ambulance attended the scene.
Meanwhile, a full investigation has been launched into how saddling boxes came to be blown onto the road outside Epsom Downs Racecourse last Wednesday before the Investec Spring Meeting.
This was the second "freak incident" at the racecourse in as many months, with high winds ripping off part of the Duchess Stand’s £23.5m roof in January.
A spokesman said: "The saddling boxes have been there since 1996 and we have never had an incident with them before.
"All of the racecourse’s infrastructure is checked on an ongoing basis. Safety is of paramount importance to us. The Duchess Stand is now 110% safe and a certificate has been issued to this effect. Each incident was isolated."
At 380ft above sea level, he said Epsom Downs is a high racecourse, making it vulnerable to severe weather, but it is confident that there will be no problems when the Queen visits the Epsom Derby next month at the start of her diamond jubilee celebrations.
The spokesman said: "There are no guarantees with the English weather, but even if we did have freak weather in June, we will have ensured through our investigation that incidents like this won’t happen again by looking at even the slightest risks."
Last month was the wettest April since records began in 1910 and the next two week promise plenty more rain in the borough.