It will be a wet end to April in Ottawa, with 30 to 50 millimetres of rain expected over the next two days. Environment Canada has issued a yellow warning – rainfall for Ottawa and eastern Ontario, calling for heavy rain starting this afternoon and continuing until Thursday. “A low-pressure system will bring heavy, widespread rain beginning late this afternoon,” Environment Canada said in a statement. “Water will likely pool on roads and in low-lying areas.” The forecast calls for 5 mm of rain today, and another 30 to 40 mm of rain overnight and Thursday morning. Rain is expected to begin around 4 p.m. The record for greatest rainfall in Ottawa on April 29 is 18.2 mm set in 2025, while the record for April 30 is 43.7 mm set in 1907. Environment Canada is calling for a cloudy start to today with a 40 per cent chance of showers late this morning and this afternoon. Rain at times heavy beginning this afternoon. High 16 C. Rain at times heavy continuing tonight. Low 6 C. Rain will end Thursday morning and then cloudy with a 30 per cent chance of showers. High 8 C. Friday will see a mix of sun and cloud with a 30 per cent chance of showers. High 9 C. The outlook for Saturday calls for a mix of sun and cloud with a 30 per cent chance of showers. High 10 C. Sunday will see a mix of sun and cloud with a 30 per cent chance of showers. High 10 C. The normal temperatures for this time of year are a high of 16 C and a low of 5 C. Rainy April The heavy rain over the next two days comes at the end of a wet April in Ottawa. A total of 90.7 mm of rain and 0.6 cm of snow have been recorded at the Ottawa Airport so far this month. Ottawa has only received a trace of rain over the past 10 days, according to Environment Canada. The Ottawa Fire Services issued an open-air fire ban on Tuesday due to the dry conditions and a recent series of grass fires.
