NSES Content Standard D 
Earth and Space Science: Changes in the Earth and sky 
Grades K-4, page 134 

Weather changes from day to day and over the seasons. Weather can be described by measurable quantities, such as temperature, wind direction and speed, and precipitation. 

Benchmark 4B The Physical Setting: The Earth
Grades K-2, page 67
Some events in nature have a repeating pattern. The weather changes some from day to day, but things such as temperature and rain (or snow) tend to be high, low, or medium in the same months every year.