Weather during an October wedding

Rain is super unpredictable, whenever you book a wedding including outdoors, make sure you have a plan B and make sure you are HAPPY with your plan B in the event that happens.

October is a beautiful month, It does seem to rain yearly near Halloween though, that's the only thing I have noticed, so stay away from end of October if you can!

Rain is unpredictable as a lot of the precipitation we get is affected by weather patterns in the states. Sometimes it's wet and gross by September, others we're humid until October with cold evenings. I personally don't think it's not super cold but I have friends who are from warmer climates like India and South America complain about "the cold." Ladies might get chilly and feel nippy especially if their legs or shoulders are exposed. If guys are wearing suits, they should be fine. I would definitely recommend having an indoor backup.

It all depends on when the rains start. Commonly, the rainy part of fall starts in late October/November but it can start earlier in October, sometimes as early as thanksgiving. If you’re planning an outside ceremony, make sure you have an indoor backup just in case.
As for greenery, the fall colours usually turn during that time or a little sooner. You should still have foliage available but it likely won’t be green anymore.