Are there any downsides of buying an investment property close to or during winter if you plan to rehab/flip or hold?

I am considering my options as I approach the slowing Winter months. 

The winter is coming and will make finding a tenant a bit harder so should I use that time to perform my rehab?

If you do really wanna move soon on something I'd at least wait till the dead of winter, as it will be here sooner than you think,  to try to pick up a deal.  

also if they redeem they owe you what you paid plus statory interest which i think is 9%.. but you do any work past winterizing and you lose those improvements.

@Marc Winter please see item #3 under Case Search in the Linked WebCivil Courts FAQ:https://iapps.courts.state.ny.us/webcivilLocal/LCFAQ

I go up slightly (my initial offer bakes this likelihood in) and if the seller counters again I explain why I can't go any higher (all good reasons - winter's coming and the gas bill will not be low, it'll take at least two months to rehab a unit/units and fill vacancies, etc.). 

@Aaron Winters looking for a contractor to help near KUMED area a possible 3 door building a referral will be appreciated.

If you know of the odd 'winterizing' company that do it for banks etc they can notify you.

We do not have harsh winters so you don't have hard freeze problems.