Dexter (MO) Temperature by Month

Dexter in Missouri, United States of America sees significant seasonal temperature differences, with daytime highs between 7°C (45°F) in January and 32°C (90°F) in July, averaging 20°C (68°F) annually. Explore the full monthly breakdown below.

Depending on the time of the year, temperatures range from very warm to cold in Dexter. At night, minimum temperatures range from 21°C (70°F) in July to -3°C (27°F) in January.

The chart below illustrates the average maximum day and minimum night temperatures in Dexter by month:

From around 4 AM to 6 AM temperatures are at their lowest; by 3 PM they've climbed to their daily peak.

The chart below shows the average temperature throughout the year:

Dexter's average annual maximum temperature is 20°C (68°F). To put that in context, here's how it compares to a few well-known destinations:

Seville, Spain averages 23°C (73°F) a year, one of the warmer cities in Western Europe, with long hot summers.

Toronto, Canada averages 13°C (55°F) annually, with cold snowy winters balanced by genuinely warm summers.

Shanghai, China averages 21°C (70°F) a year, with warm summers, mild winters, and a noticeable spring and autumn.

Melbourne, Australia averages 20°C (68°F) annually, known for unpredictable weather, with four seasons sometimes happening in one day.

Climate temperature data is typically calculated as a 30-year average. This smooths out year-to-year variability and gives a more reliable picture of what a place is actually like, rather than what happened in any single unusual year.

The readings come from a range of sources, land-based weather stations, ocean buoys, ships, and satellites. That data is collected by weather services around the world, then pooled, quality-checked, and averaged to produce the climate records you see here.

Seasonal temperature shifts influence more than just how warm it feels, they also drive changes in rainfall, cloud cover, and wind patterns throughout the year.

Warmer air holds more moisture, which tends to mean heavier or more frequent rain during the warmer months. When temperatures drop in winter, any precipitation that does fall is more likely to come as snow or sleet, though in Dexter this rarely lasts long on the ground.

For more on Dexter's weather, including monthly rainfall, sunshine hours, and humidity, visit our Dexter climate page.