I need you to check these sentences for m, please?

1) What's the weather going to be like in Rome tomorrow?
2) It's going to be windy, sunny, foggy,overcast, frosty, rainy,cloudy, misty. stormy.
3) There is going to be thunder and lightning (or they are going to be thunders and lightnings?)
4) It is going to pour, to rain heavily, to drizzle,to hail
The hail damaged the windshield of my car.
5) How high is the temperature? It's 40 degrees Centigrade (not centigrade):
What's the temperature like?
It's sunnier and warmer in Rome than in Tokyio.
6) It's rainier in London than in Rome.
In summer the weather is usually scorching hot with a temperature of 40 degrees Centigrade. It seldom rains and it is very dry.
8) In winter it is usually freezing cold with temperatures which go below zero.
The temperature reaches (is of ) minus 4 degrees.

3. Use only the singular forms.

5. A common way to write temperatures is this: 40 degrees C -- or simply 40C.

8. not "is of"

All else is fine.

Sure, I can help you with that. Here's a check of the sentences you provided:

1) What's the weather going to be like in Rome tomorrow?
- Sentence looks fine.

2) It's going to be windy, sunny, foggy, overcast, frosty, rainy, cloudy, misty, stormy.
- The list of weather conditions looks good.

3) There is going to be thunder and lightning.
- The sentence is correct. "Thunders" and "lightnings" are not commonly used. We usually use "thunder" and "lightning" as uncountable nouns in this context.

4) It is going to pour, rain heavily, drizzle, hail.
- The list of verbs related to rainfall is correct. The sentence "The hail damaged the windshield of my car" is also fine.

5) How high is the temperature? It's 40 degrees Centigrade.
- Including "not centigrade" is unnecessary. "Centigrade" is a unit of measurement for temperature.

6) What's the temperature like?
- The question is correct.

It's sunnier and warmer in Rome than in Tokyo.
- The sentence is also correct.

7) It's rainier in London than in Rome.
- Another accurate statement.

In summer, the weather is usually scorching hot with a temperature of 40 degrees Centigrade. It seldom rains and it is very dry.
- The description seems clear.

8) In winter, it is usually freezing cold with temperatures that go below zero.
- The sentence is accurate. The phrase "go below zero" is a suitable expression.

The temperature reaches minus 4 degrees.
- Adding "is" before "minus 4 degrees" would make the sentence flow better.