The long term forecast is currently 80 degrees and some sun for Chickasha on Friday. Yes that means very little when its still this far way away but I'd rather start with a forecast of a sunny 80 degrees and work down from there than have a forecast of 20 degrees and hope it goes up!
Saturday is predicted to be much cooler with strong Thunderstorms possible...
Yes, more than a week out forecasts are highly changeable. It looks good, but I'm bringing my winter clothes.