This has not been a good season so far to be a pool owner in Colorado. The nights are always cool, and now we are having an unusually cool June to boot. It has not gotten out of the 70's for two weeks. I have swam a total of 10 minutes so far. Just haven't felt like running the heater when it's so cool, cloudy and threatening to rain all the time.
I can't tell what's the norm for Colorado anymore. The last 7 years have probably been abnormally warm. Is this year more of the norm? It's hard to tell. One thing is for sure, we usually get 300 sunny days a year. I doubt that's the case this year!