Environment Canada’s forecast gives the highest range for other communities such as Brockville, Cornwall and Maniwaki from this afternoon to early Wednesday morning. For more western areas like Gananoque, Kingston and Pembroke, it’s more like 40 to 60 millimeters from Tuesday morning through that evening. There are no warnings for the Bancroft, Belleville or Deep River areas. Belleville is expected to get about 30mm of rain. Rain is expected to be heavy at times and could exceed higher forecasts if multiple storms hit, according to Environment Canada. The Ottawa forecast says there is a risk of thunderstorms for most of Tuesday. The high is 21C with the humidity making it more like 26, but the temperature should drop to around 16C in the afternoon. Wednesday’s high is 18C but should reach that quite early before dropping to 12C and then an overnight low of 6C. This would be the coldest night since the first week of June . Using weather records dating back to the 1870s, the heaviest rainfall Ottawa has recorded on September 13 is 35.6 mm in 1928.
