Is it actually raining there now? if not just get it up now - it will have aired in half an hour in this temperature. The temperature is also your worst enemy - if you leave it even for a couple of days you stand a very real chance of getting mould growing.
I personally would not leave it to chance but that is my opinion you may get others who will tell you they have left theirs for long periods with no problems. You need to have a contingency plan in place for when this happens again (because it probably will) do you have a friend or neighbours drive or garden you could use for emergencies?
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