Eh, I wouldn't but I don't usually discard anything. HAHA.
Two cycles ago I had some major screwy temps when I went camping (cold Vermont nights) and I had a few ups and downs that made my chart less "pretty" but I still was (and so was FF) able to calculate my O date based on other signs. I would leave it for now. See what happens to your temp over the next 3 days.
Just my two cents.