Kennedy Space Center, Florida (CNN) -- The space shuttle Discovery will not land Monday.
Poor weather conditions at the Kennedy Space Center prompted NASA to cancel two scheduled landing attempts, the space agency said.
The next landing attempt will take place on Tuesday at Edwards Air Force Base in California.
The forecast for the Space Center area Monday morning called for overcast clouds and a chance of showers. That forced the wave-off of an 8:48 a.m. ET opportunity; a scheduled landing at 10:23 a.m. ET also was canceled.
The volcanic ash from Iceland's Eyjafjallajokull glacier, which has caused widespread flight disruptions throughout the world, will not affect the landing, NASA said.
The shuttle's re-entry course is not near the ash cloud, the agency said.
The shuttle launched on April 5 and docked to the Space Station two days later.
It marked the first time four women have been in space at one time.
Three women -- mission specialists Stephanie Wilson, Dorothy Metcalf-Lindenburger and Naoko Yamazaki -- comprised part of the Discovery's crew.
NASA astronaut Tracy Caldwell Dyson was already at the space station.
The astronauts' trip included three spacewalks and delivery of more than seven tons of equipment and supplies.
The astronauts removed and replaced an old ammonia tank that is part of the space station's cooling system.
The tank has to be replaced periodically. The current one had been at the station for eight years.
The mission also included retrieving a Japanese experiment from the station's exterior.
There are only three shuttle missions remaining before the space shuttle fleet is retired.