Jefferson City (MO) Temperature by Month
The average annual maximum temperature in Jefferson City, Missouri, United States of America is 19°C (66°F), with daytime highs ranging from 5°C (41°F) in January to 31°C (88°F) in July. This page covers monthly averages, day-night differences, and how Jefferson City compares to cities worldwide.
Jefferson City Monthly Temperatures
The climate in Jefferson City is known for significant temperature differences throughout the year. At night, this contrast is just as clear, with lows ranging from 21°C (70°F) in July to -6°C (21°F) in January.
The chart below illustrates the average maximum day and minimum night temperatures in Jefferson City by month:
The minimum temperature is often recorded between 4 AM and 6 AM, while the highest temperature is usually reached at 3 PM, when the sun's heating effect is strongest. July, the warmest month, gets 312 hours of sunshine.
The chart below shows the average temperature throughout the year:
Temperature: Jefferson City vs the United States of America
The map below shows the annual temperature across the United States of America. You can also select individual months if you want to compare a specific time of year.
very warm
warm
pleasant
moderate
cold
very cold
Jefferson City vs World: Temperature Compared
Jefferson City's average annual maximum temperature is 19°C (66°F). To put that in context, here's how it compares to a few well-known destinations:
Barcelona, Spain has an annual average of around 21°C (70°F), with warm summers and mild, fairly short winters.
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.
Adelaide, Australia averages 21°C (70°F) a year, with warm summers, mild winters, and relatively low rainfall year-round.
What Does the Temperature Feel Like in Jefferson City?
Temperature alone doesn't tell the whole story — humidity plays a big role in how warm or cold it actually feels. High humidity in summer makes the heat feel more intense, particularly once temperatures climb above 25°C. In winter, the same humidity can make cold air feel sharper than the thermometer suggests.
In the cooler months, when temperatures drop below 10°C, high humidity makes the cold feel more cutting than it would in dry conditions.
In Jefferson City, January is the coolest month, with average highs of 5°C (41°F) and humidity around 71% — considered high. In July, the warmest month, temperatures average 31°C (88°F) with 69% humidity — conditions that feel high. For a full picture, see our humidity page.
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 Jefferson City this rarely lasts long on the ground.
For more on Jefferson City's weather — including monthly rainfall, sunshine hours, and humidity — visit our Jefferson City climate page.
