Other facts from our historical weather data: When is summer in Bedford?The hottest season / summer takes place in June, July, August and September. Which is the warmest month in Bedford? August has an average maximum temperature of 30°C (86°F) and is the warmest month of the year. Which is the coldest month in Bedford? The coldest month is January with an average maximum temperature of 4°C (39°F). Which is the wettest month in Bedford? April tops the wettest month list with 156mm (6.1 in) of rainfall. Which is the driest month in Bedford? February is the driest month with 69mm (2.7 in) of precipitation. No idea where to travel to this year? We have a tool that recommends destinations based on your ideal conditions. Find out where to go with our weather planner.