Answer: rain

AnswerCrossword Clue
RAINShower
RAINIt might come in buckets
RAINPicnic spoiler
RAINWord with date or dance
RAINApril forecast
RAINCause of a game delay
RAINFall from the sky?
RAINIt may precede the front
RAINPour
RAINBall game delayer
RAINCome down
RAINDrops from the sky
RAINWet forecast
RAINDrought ender
RAINGolf round spoiler
RAINPicnic concern
RAINReason for a makeup game
RAINShower, e.g.
RAINPicnic ender
RAINCause of some delays
rainfall of rain rainstorm
RAINComes in cats and dogs
RAINGame delayer, perhaps
RAINPour down on
RAINCloudy stuff
RAINDescend in torrents
RAINSeeder's make it
RAINMaugham short story
RAINPicnic hamperer
RAINPrecipitation
RAINWord with hat or dance
RAINBeatles single featuring reversed tracks
RAINWet from above
RAINBallgame ruiner
RAINSeattle standby
RAINGobi rarity
RAINType of check
RAINSahara rarity
RAIN"Paperback Writer" flip side
RAINDrought relief