The highest temperature will be less than 10 degrees today.
砕けた会話なら、「The highest temperature will be less than 10 degrees today（今日の最高気温は十度以下です）」で英語に訳せます。
「最高[気温](https://eikaiwa.dmm.com/uknow/questions/35200/)」というのは：
the highest temperature
the maximum temperature (ちょっとフォーマルな感じ）
a high of~ (一番フォーマルな言い方、[天気予報](https://eikaiwa.dmm.com/uknow/questions/26180/)の場面でよく使われています）
10度：
10 degrees
以下：
under
below
less than
もっと丁寧な天気予報な場面で：
The temperature will reach a high of 10 degrees today.
(この時「以下」を抜けました。天気予報で的確な温度を言うからです。）
英語頑張ってください〜 :)
Today, the highest temperature will be less than 10 degrees.
It is going to be cold today, the highest temperature is less than ten degrees.
These are two different ways to express the same idea, that today's highest temperature is going to be less than ten degrees. The first provided example emphasis that today is the day we are talking about, with the secondary information included is that the highest temperature is less than ten degrees. In the second example, we begin by stating it will be cold, and the comma represents a because. Why is it going to be cold today? Because the highest temperature is less than ten degrees.
THE WEATHER FORECAST
"Today we shall have a low depression system coming in from the Atlantic and it is expected to reach the west of the country early this evening.
There may be heavy rainfall in the morning but it should clear by mid afternoon.
Winds will be light to moderate and southwesterly and today's high, ten degrees."
THE WEATHER FORECAST
例文
"今日は、低気圧が大西洋から来て今夜早いうちに西部に届くでしょう。
朝には大雨がある可能性がありますが、午後には晴れるでしょう。
風は南西に軽く穏やかに吹くでしょう。
今日の最高気温は１０度です。
The highest temperature today will be less than 10 degrees Celsius.
1. The highest temperature today will be less than 10 degrees Celsius.
This means that the temperature will get no higher than 10 Celsius today.
Hope this helps :)
1. The highest temperature today will be less than 10 degrees Celsius.
これは、今日の気温は10度を超えないということを意味します。
お役に立てれば幸いです。
Today's highest temperature will be lower than 10 degrees.
The maximum temperature for today is 10 degrees.
*Today's highest temperature will be lower than 10 degrees.
This means that the temperature will be below 10 degrees e.g 8 degrees .
*The maximum temperature for today is 10 degrees.- This means that the temperature will not go above 10 degrees.
*Today's highest temperature will be lower than 10 degrees.という例文について
この文は、気温が１０度以下になることを指します。例えば８度など。
*The maximum temperature for today is 10 degrees.という例文について
この文は、気温が１０度より上にならないことを意味します。
Today's highest temperature will not exceed 10 degrees Celsius.
It is very cold today. The highest temperature is lower than 10 degrees Celsius.
If today's highest temperature is lower than 10 degrees Celsius, it means that it will not go higher than 10 degrees Celsius. But, even though we have been told that the highest temperature is lower than 10 degrees Celsius, we have not been told what the exact figure is. However, we know that if that figure is the highest, it will not go higher than 10 degrees Celsius.
We know that it is very cold today. Although we can feel it, we don't know what the actual high is. However, we have been informed that the highest temperature reading is lower than 10 degrees Celsius or it is expected to be lower than 10 degrees Celsius.
So, you may say:
Today's highest temperature will not exceed 10 degrees Celsius.
or
It is very cold today. The highest temperature is lower than 10 degrees Celsius.
例：Today's highest temperature will not exceed 10 degrees Celsius.
「今日の最高気温は１０度を超えることはありません。」
例：It is very cold today. The highest temperature is lower than 10 degrees Celsius.
「今日はとても寒いです。最高気温は１０度以下です。」
今日の最高気温が１０度以下"The highest temperature is lower than 10 degrees"のとき、最高気温は１０度を超えることはない"The highest temperature will not go higher than 10 degrees."と言いかえることができます。
もしとても寒い日に、正確な最高気温がわからない場合でも例文２の様に言えば伝わります。
"The highest temperature will be less than 10 degrees today"
"It is quite cold today, the highest temperature is lower than 10 degrees"
" Temperatures today won't go higher than 10 degrees"
If you wanted to express that today's highest temperature is lower than 10 degrees, you could say any of the following: "The highest temperature will be less than 10 degrees today", "It is quite cold today, the highest temperature is lower than 10 degrees" or " Temperatures today won't go higher than 10 degrees".
「今日の最高気温は十度以下です」は次のように言えます。
"The highest temperature will be less than 10 degrees today"（今日の最高気温は十度に満たないでしょう）
"It is quite cold today, the highest temperature is lower than 10 degrees"（今日はかなり寒いです、最高気温は十度以下です）
"Temperatures today won't go higher than 10 degrees"（今日の最高気温は十度に満たないでしょう）
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