After todays' damp day (perhaps raindrops), the wind shifts late tonight to NORTH. By early Sunday morning, overcast /cloudiness with the still north wind shifts to Northwest wind- West wind through Monday morning till late morning. So hard to tell exactly when the birds are triggered ( they watch the setting sun to orient direction...so..the sun setting on their right means south ) but Sunday morning should be in good shape for incoming migrants, perhaps better throughout the day and who knows how good for Monday morning ? ( Hope we can get the day off ! ;)> ) Only way to find out is get out there.
Check out too Woodcreeper's blog for his analysis
----------------------->> Bird migration forecast.