The cast of When it Rains it Pours - 2005 includes: Nick Stevenson as Warren
The cast of When It Rains - 2008 includes: Kristen Farnsworth
The cast of It Never Rains - 1996 includes: Kane McNay as Tim
Pours
The cast of When the Rains Come Again - 2011 includes: Garry Youngberry as himself
The cast of After the Rains - 2010 includes: Jack Hamann as Himself - Correspondent Ezra Teshome as Himself - Humanitarian
The cast of This Light Rains - 2007 includes: Terry Beedle as Terry Cort Garretson as Bill
A counterexample for "when it rains it pours" could be a situation where it rains lightly throughout the day without escalating into a heavy downpour. This would go against the idea that once it starts raining, it will intensify significantly.
The cast of The Harlequinade - 1910 includes: Fred Rains as Clown
When it rains it pours!
Big Break Dominican Republic - 2010 When It Rains It Pours was released on: USA: 2010
"And just like that, we're all in fright"?
The cast of The Boy and the Physic - 1910 includes: Fred Rains