HELENA, Mont. -

Montana Fish, Wildlife and Parks is limiting fishing hours on several rivers due to lower flows and warmer temperatures.
    
The fishing closures between 2 p.m. and midnight will take effect Monday on portions of the Dearborn, Smith and Sun rivers along with the Lower Madison and Upper Big Hole Rivers.
    
FWP orders "hoot owl" closures when maximum water temperatures reach at least 73 degrees for three consecutive days.
    
The preferred water temperature for rainbow and brown trout is about 56 degrees.