Sick of the rain? Worried about thunderstorms? Hoping summer will actually sit down and stay in Hamilton?

There's a good reason — from April to July, it's been damper and colder than last year for each month. "All four months have been wetter and cooler so far," said Trudy McCormack, a services support meteorologist with Environment Canada. "We're definitely wetter than we were last year.

It's been inescapable for many — April and May in Hamilton was more than twice as wet as last year and over the usual average. June was a bit of a reprieve and came in under the usual average for precipitation, but July is right back up there again. It has rained six days in July so far, McCormack says, compared to one day all of last July.

"It feels like it rains every day with wet month after wet month," she said. "It's been a really wet July so far."

But compared to other regions, Hamilton has been pretty lucky. Toronto was slammed by a massive thunderstorm on Monday and the city still hasn't totally recovered. Many were left without power after 126 millimetres of rain fell in just two hours. Many streets were washed out and the transit system sloshed to a halt.

David Phillips, a climatologist with Environment Canada, said those rains may have been "the most intense, wettest moment in Toronto's history."

Guelph was soaked during the TiCats home opener last Sunday, too — but so far, Hamilton has been spared the brunt of any major thunderstorms.

"That's because thunderstorms are very localized in nature," McCormack said. "One place might get slammed, but their neighbours wouldn't get touched."

All it takes is moist air, instability and a trigger, and thunderstorm can hit fast, McCormick says. Instability is a hot pocket of air rising fast and a trigger could be as simple as a lake breeze, she added.

"It's really hard to say who's going to get what because thunderstorms are so localized," she said. "It's like guessing where the first bubble in a boiling pot of water will rise."

Both Hamilton and the GTA have been placed under a severe thunderstorm watch on Wednesday, which could bring high winds and heavy rainfall to a region that is still mopping up.

Environment Canada issued a special weather statement in the morning, warning of the "development of severe thunderstorms" with wind gusts to 90 km/h hail two cm in diameter and heavy downpours up to 50 mm in an hour.

A cold front moving west to east across Southern Ontario this afternoon and evening is the likely culprit for the potential storm.

"The front will affect southwestern Ontario early this afternoon, the Greater Toronto area and south central Ontario by mid afternoon, and eastern Ontario late this afternoon and early this evening," an Environment Canada statement reads.