9 ⟨Aratus, Phaenomena⟩: 862-868

But fear it when the sun’s rays suddenly stretch from heaven as though their light were fading, just as they weaken when the moon casts shade, standing in line between the earth and sun.⁷⁸⁴ Nor, when he delays appearing before dawn and deeply reddened clouds show here and there, do the fields remain unwetted on that day.

9 ⟨Aratus, Phaenomena⟩: 869-876

Likewise, when he is still beyond the horizon, and rays stretching ahead look shadowed before dawn, do not forget the rain or wind that may come down. If those rays carry deeper darkness, they give a stronger sign of rain; but if only a little gloom spreads around the rays, such as soft clouds especially carry, they may be shrouded in the gloom of approaching wind.⁷⁸⁵

9 ⟨Aratus, Phaenomena⟩: 877-879

Dark halos close to the sun promise no fair weather; closer ones, dark without a break, foretell a greater storm; and two may mean harsher weather still.⁷⁸⁶

9 ⟨Aratus, Phaenomena⟩: 880-886

Watch as he rises or just as he sets, whether any of the clouds called parhelia ⟨beside him⟩ redden to the south or north, or on both sides. Do not keep a careless watch on this sign: for when those clouds on either side together hold the sun between them, close to Ocean, the storm coming from Zeus does not delay.⁷⁸⁷

9 ⟨Aratus, Phaenomena⟩: 887-891

If just one to the north turns crimson, it may bring northern gusts; a southern one, winds from the south, or perhaps the drops of rain come hurrying on. Put still greater trust in these signs at evening: from the west their message is always steady and consistent.⁷⁸⁸