Niagara Falls weather in March

One poster's two data points say everything: "a day in late March of 2012 when it was 26°C. Last year, it barely cracked 5°C." March–April is called a transition from winter to spring where "temperatures swing wildly from day to day," and the forum's blunt view of forecasting it is that "predicting weather is a fool's gamble this far out." Some Canadians have shorts out by early April and golf courses can open; late March can still be winter, and it very much still is further east in Montreal and Quebec City. The advice is the only advice that works here — bring warm clothes but layer, and bring variety so you have options. Our record puts March at 4.9°C days, -2.4°C nights and 14.9cm of snow, which is the cold end of the forum's range, not the middle of it.

Niagara Falls' forum rates June as a genuine sweet spot — summer weather without July and August's peak crowds, since Canadian schools are still in session for most of the month. Regulars note late June already runs into the high 70s°F, with shorts weather standard by then.