Ok - help settle a minor long running feud between my spouse and I.
When its hot outside, and we want to keep the house cool without the use of fans or air conditioners - we clearly want to keep the night cool inside as long as possible. I’ve found that obviously keeping the windows closed and shaded helps greatly. The crux of the agument though is: If we do leave some windows open - are windows with sunlit air near them sending in more heat than windows with shaded air? Presume that I’m not allowing any sunlight itself in. Now . . . I maintain that the air outside is moving so quickly that their is unlikely to be any real temperature difference in the air that just happens to be dancing through a sunbeam at that moment than air that just happens to be in the shade at the moment.
Thoughts?
I guessing at how this can happen - there are a lot of ways.
Remember that sun hitting objects heats them up and cause them to radiate heat and transfer that heat to the air (and through your open window too)
In short there is a diffrence but it really depends on the actual situation. Excluding a/c, when the outside temp is higher then inside keep the window closed and shades down (esp. if the sun is shining in - it might be better to open them otherwise to get light)
Thanks but, gotta mention - your tagline at the end is really weird to see in the context of a question about essentially physics! If you are talking about sex, cars, physics, religion . . . or gun politics, does this same tagline always appear?! 
It depends on many things. The sun coming in your house is going to heat both the air and the the carpet/furnishings that it hits, and then those will heat the air. You want to, in general, keep the house closed if it is cool inside, and keep it closed for the day. In general, that will make it a lower temperature inside, in an average house.
However - there is the thing about perceived temperature due to air flow and about perceived temperature due to evaporation of your sweat. Keeping the house closed and still will reduce airflow greatly across your body, and thus will make you feel hotter. In general, being in still air at 75 degrees feels warmer than flowing air at 80 degrees. An internal fan can help this a lot. Also, humidity will tend to build up in your house as well (although it still may be more humid outside if you live in Texas, or Kansas). A dehumidifier can help this a lot. But then, if you start throwing all these things on, you start using energy again…
I personally will try to do is a hybrid approach this Summer. I will try to keep the house closed and the air off from 7:00 am to about 1:00 pm, then turn the A/C on until 9:00 pm or so, then open the windows until 7:00 am to let the nighttime air cool the house. I hope it works out.
So, the short answer is - there are way too many variables, IMO, to give a single answer. It’s going to depend on the level of sunlight outside, the shade temperature, the humidity outside and inside, the insulation of the house, the nighttime temperature, and a few other factors.
And what about my tagline/signature?
The SDMB allows a signature line when you post. You set it up in your profile. There is no option for multiple signatures but you can change you signature whenever you want.
As for why I chose the one I did - it is a statement on human rights and how the Gov’t is slowly taking them away more then a statement on gun ownership. I sometimes think of it as the forgotten (or ignored) amendment. But that’s another topic (that’s best left for another forumn).
very nice but I think having more then one detracts from both.
But that’s just my humble O…
Going back to the OP. on very hot day’s sometimes I will turn on the sprinkler which does hit the house and does cause a cooling effect.
Thanks for the info, and I like your tagline!