The phrase "average monthly temperatures" is grammatically correct and can be used in written English.
It is typically used when discussing the average temperatures for a specific time period, usually a month, in a particular location. Example: The average monthly temperatures in London during the winter months are usually around 5-7 degrees Celsius.
Average monthly temperatures vary greatly across Wyoming.
The coldest average monthly temperatures in winter drop below freezing except along the southern coast.
For the zone as a whole, average monthly temperatures during the cold season are approximately 55 °F (13 °C).
One gets a similar sensation from a table showing month-by-month warming in recent years, when compared to average monthly temperatures between 1951 and 1980.
The research from Dim Coumou and Alexander Robinson predicts that so-called "3-sigma" heat waves, where average monthly temperatures significantly exceed the average over the course of the past century, will become increasingly frequent.
For its part, last summer was cooler than the summers of 2010 and 2011, when there were Julys with average monthly temperatures above 80 degrees and 103- or 104-degree highs.
March 2013 was the coldest since 1962, with an average monthly temperature of just 2.6C.
For planning vacations, I would like to know a really cool Web site with the average monthly temperature and average precipitation in major cities around the world.
The average monthly temperature for July and August is about 73 to 75 °F (23 to 24 °C), with an average daytime high of about 95 °F (35 °C); the average monthly temperature for January is 41 °F (5 °C).
The area has great climatic extremes: the average monthly temperature is 14 °F (−10 °C) in January and 90 °F (32 °C) in July.
In the equatorial climate zone, temperatures are hot, the average monthly temperature rarely dropping below the mid-70s F (low to mid-20s C).
