I chart my temps, but i've only taken my temperature as soon as I get up, not during the day. But is stands to reason that if your resting temp is higher after you ovulate, your daily temp will be slightly higher too. It will also depend on the activities you're doing during the day, if you've just walked a block, or worked out, or been moving around your temp will be higher, if you've been laying on the couch or sitting at a computer it could be lower. There is a lot of fluctuation, which is why for charting you take it as soon as you wake, with as little movement as possible beforehand.

However if it gets high like fever high, then I don't think it can be attributed to ovulation!