Exhausts and Engine » Engine temperature?

The other day I was on a long ride on my 1200RS and got caught in torrential rain. I was held up for a lengthy period in roadworks, a lot of which was uphill, and at one point I noticed a small cloud of steam coming up from the front of the bike. Not too surprising given how wet it was. However, I flicked the instrument panel over to display the engine temperature, and noticed it was in the low 90s... I have to say I don't spend much time perusing the temperature readout but as far as I can recall it's usually in the 80s when warmed up and running normally? However, as I kept watching, the readout kept climbing; I saw 99 deg on the display before the traffic sped up and the readout fell back again. I realise the cooling system is under pressure so will reach temperatures over 100 deg without boiling, but I have to say this was making me sweat a bit! There was never any warning light displayed, but it did make me wonder, what's considered 'normal' temperature? Anything to be concerned about?

The bike's 2-year BMW warranty expires in less than a month, so I'm quite interested to know!

Usually its about 84c but it will go up to 98-100 then the fan draws it back to about 92, water gets on the rad when engine is cool and as soon as the thermostat opens up and the heat surges into the rad fog fog fog