www.weather.com is your friend. I cycle, 3 on 4 off, but I really watch the barametric pressure. When low fronts roll through, some people will refer to them as cold fronts, or rainy stormy weather the barametric pressure drops. I have always been successful breeding during these fronts with low BP. Different places has different "normal barrametric pressure" so start researching now. Track the pressure a couple times a day then when a front comes record the drop. The numbers will not drop dramaticly but will drop. Beside the pressure will also be a symbol telling you if it is going back up, still dropping, or holding steady. This has always been very good information in my breeding process.