The weather app for the round
Knowday reads the wind, the gusts, and the rain — then tells you the best window to play, and when the breeze will start moving your ball.
Today · your round
What matters on the course
Wind moves every shot
Wind is the difference between a struck approach and a lost ball. Knowday weights it above everything else and points you at the calmest window for your round.
Gusts that wreck a swing
A steady breeze you can club for; a sudden gust you can't. Knowday tracks peak gusts and calls a hard Skip when they get genuinely unplayable.
Rain on the round
It watches the rain window across your tee time, so you know whether you're finishing 18 or scrambling for cover at the turn.
Sun, glare and burn
A little cloud cuts the glare on a long putt; peak UV decides the hat and sunscreen. Knowday reads both so the light works for you, not against you.
How it works
It scores wind, gusts, the feels-like, the rain window, cloud cover, and UV — and leans on the wind, because that's what a round lives and dies on.
One honest limit: a morning frost delay or a lightning horn is the course's call, not ours — Knowday flags likely storms, but the starter has the last word.
Golf is one of fourteen plans Knowday reads — walks and rides, the lawn, the garden, camping, the night sky, and the water.
See all plansNo catch
Free to use. No sign-up. Your location is only used to fetch your forecast.