Total guess here... but Im thinking daily temps should be into the mid to high 50's by then... we just had a cold spell where a couple of days dropped into the low 30's... but Im thinking spring is finally here... We usually get a TON of rain in April and May though... Ill keep an eye out on local weather and weather underground and keep you posted..
If we get rained out and cant get the smoker going for a back yard feast.. not a problem.. there are plenty of smoke friendly places around here.. we can do a last minute change and hit one of the local cigar bars (Baker Peters Steakhouse has a nice place upstairs that has live jazz, funk, or fusion music every night.. and they serve one of the best steaks in the city... they open at 430... and stay open late
http://bakerpeters.com/ ).. or for a lower cost option, we can go grab some burgers at a local restaurant somewhere and then hit one of the B&M lounges...
For those traveling too far to go back home that night, let me know if you're going to be looking for overnight accommodation by shooting me a PM.. I might have a very low cost solution for you (not 100% certain on this.. but I think I can work something out)...