PROVISIONAL DATA SUBJECT TO REVISION. The winds are usually associated with strong low pressure systems moving across the Great Lakes or up the Ohio River Valley. COLD: Winter temperatures reach their low in January with the average 23.3. HEAT: The average July temperature is 72.9. WINTER WEATHER: Snowfall averages 81.8" per year...much of it from lake effect snow squalls. Roseland Snow depth on the ground at any one time rarely exceeds 10" but when it does, it is usually after a lake effect snow event. Serious flash floods are more rare. View current station data by selecting the desired options below and clicking the "View Data" button. Monthly: 1981-2010 normals History: 2007-2019 US Dept of Commerce 7-hour rain and snow forecast for South Bend, IN with 24-hour rain accumulation, radar and satellite maps of precipitation by Weather Underground. COOP SBN Monthly Rainfall in is fairly evenly distributed throughout the year. The all-time August high is 103 and in September it's 99. The highest wind gust on record is 92 mph August 22 1996. Watch/Warning January has the lowest average temperature of the year. ,