Engineering360: "How Moon dust can quench astronauts’ thirst"

Would not the daytime sunshine of the lunar surface (~250 F) cook the water out of any lunar dust?

"Daytime temperatures near the lunar equator reach a boiling 250 degrees Fahrenheit (120° C, 400 K), while nighttime temperatures get to a chilly -208 degrees Fahrenheit (-130° C, 140 K). The Moon's poles are even colder."

https://lunar.gsfc.nasa.gov/images/lithos/LROlitho7temperaturevariation27May2014.pdf