If you've ever listened to a weather report on the news, you would know that describing the weather doesn't stop at "Today is sunny." We try to be as descriptive as possible when talking about what it's like outside so that anyone listening will know what to wear or how to prepare for what is to come.
Take a look at this example (future tense):
Today it will be sunny and humid with a high of 36 degrees Celsius. It's a good day for wearing shorts and tank tops, but using sunscreen is advised to avoid getting a sunburn.
In the sentence above, we know what the sky will look like (sunny), how wet (humid) the air will be, as well as the temperature in Celsius. Canadians and Japanese people use Celsius to measure the temperature while Americans use Fahrenheit. To give more details and make it more interesting, we are also told what kind of clothes we can wear on that particular day, as well as given advice to wear sunscreen. This helps to make the weather forecast sound a lot more exciting, and to provide you with a visual so that you can imagine what it will look like outside.
Details to include when describing the weather to sound like a native English speaker: sky, air, temperature, clothing, what you might need (in the case of rain or too much sun).
Example #2 (present tense):
Today it's overcast and rainy. The temperature is currently 27 degrees Celsius. You can wear short sleeves today, but you need to carry an umbrella because of the heavy rain.
Things you might need because of the weather:
- A jacket
- An umbrella
- A change of clothes
- Rain boots
- A hat
- Bottled water