Can We Bottle Up This Weather?

Today, Las Vegas had a beautiful day, with a high of about 67, depending where you live, with no wind and hardly a cloud in the sky.
These are the days you wish you could bottle up and save for use when it is 114 degrees outside with high humidity.
Of course, it won't last, as we are getting a cold front come through starting Thursday, when the highs will only be around 55 and lows around 29. 
From the Weather Channel:

Thu Jan 10

56^°

29^°

Partly Cloudy / Wind

Chance of rain:

10%

Wind:

SW at 32 mph

Details

Fri Jan 11

45^°

26^°

Partly Cloudy

Chance of rain:

10%

Wind:

NW at 15 mph

Details

Sat Jan 12

42^°

25^°

Sunny

Chance of rain:

0%

Wind:

NNE at 10 mph

Details

Sun Jan 13

40^°

24^°

Partly Cloudy