1) You can't say for sure that it won't rain tomorrow.
明天难保不下雨。
2) It's going to rain heavily tomorrow .
明天要下大雨。
3) My guess is that it will rain tomorrow.
我猜明天会下雨。
4) I dare say(that) it will rain tomorrow.
明天恐怕要下雨。
5) As sure as eggs is eggs it will rain tomorrow.
明天肯定会下雨。
6) It has been raining the whole day.
雨整天下个不停。
补充资料：明天
1.指月光满天。 2.今天的下一天。 3.不远的将来;未来。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条