The summer morning is sultry and the wind variable.
The temperature is much above the normal.
Few stars are visible and those are indistinct. The clouds gather about the mountain tops, or drop down the mountain-sides.
The wind continues to blow up ravines after nightfall.
The sunset is a dull gray, or the sun sets into a livid cloudbank.
The sunrise is a fiery red, and the dawn is high.
The sun gradually is smothered in fine-textured clouds and the wind shifts.
The temperature does not fall at night.
The signs most to be heeded are the shift of wind to a point east of north or south, the gradual filming of the sky with cirrus and cirro-stratus, and the increase of temperature. Of course, the barometer is the best indicator of all.