温度变高的英语表达方法有：

The temperature rises/increases.
The temperature goes up.
The temperature becomes higher.

其中，"rise"、"increase" 和 "go up" 都表示 "变高" 的意思，"become" 表示 "变成" 的意思。

下面是一些例句：

The temperature rises as the sun gets higher in the sky. (温度随着太阳升得越高而变高。)
The temperature has been steadily increasing over the past few days. (过去几天温度一直在稳步上升。)
As the day progresses, the temperature goes up. (随着日子进行，温度变高了。)
The temperature became higher and more uncomfortable as the day went on. (随着一天的过去，温度变得越来越高，也越来越不舒服。)

温度的变化通常是由外界环境因素导致的，如气压、气流、太阳辐射、地理位置等。例如，当太阳升得越高时，温度会升高；当气压升高时，温度也会升高；当气流从温度较高的地方流向温度较低的地方时，温度也会升高。