Weather channel app will have that info

I also have a lower normal temperature. If I have a temp of 99 I have a fever.
I understand your idea of tracking your symptoms but hourly may be hard to do and will probably be exhausting. Maybe try for 3 or 4 times a day at least till you know if there is a difference. Then you can just track the area of the day where there is most difference. Saves you a lot of time and energy. I never did that. My mother used to say I was lazy but I suspect that I had fibro as a child and just didn't have enough energy to do all she wanted me to. Life wears me out.

I think there may be apps available for smartphones that can do some of that tracking. I'm really not sure; I quit tracking things on that level years ago and now only note new symptoms (on my phone calendar) so I can refer back to them over time. I try hard to not focus on my symptoms actually, a mind over matter approach, otherwise I start feeling "all consumed" by what's bothering me. Best of luck to you.

My temperature runs low and then out of the blue I can go up to 100. My thermostats is so haywire. I also have very low blood pressure. My pulse runs very fast in the high 80 to 90. Each day is a surprise.

When I was forced into disability I tracked my migraines throughout the day and it was exhausting. I don't think I could do it hourly. However, I think daily journals could work just as well. Jus register any changes and the time. I preferred blank lined journals because it also allowed me to vent or reflect if needed. Good luck!