Chesterfield (MO) Weather & Climate: Best Time to Visit
Average temperatures, rainfall, sunshine and the best time to visit Chesterfield.
Climate overview of Chesterfield
Temperatures in Chesterfield, Missouri, United States of America, vary greatly throughout the year. July is the hottest month at 31°C (88°F), while January is the coldest at 5°C (41°F).
The city receives considerable rain/snowfall, with around 1101 mm (43 in) annually. April is the wettest month. It has very warm summers and cold winters. July is the sunniest month, averaging 10.4 hours of sunshine per day.
Chesterfield Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Chesterfield - and find the best time to visit.
Monthly Temperature in Chesterfield
The climate in Chesterfield is known for significant temperature differences throughout the year, making the weather dynamic. Typically, average maximum daytime temperatures range from a very warm 31°C (88°F) in July to a chilly 5°C (41°F) in the coolest month, January.
Nights vary from 21°C (70°F) in July to around -6°C (21°F) during the colder months.
Check out our detailed temperature page for more information.
Temperature ranges by month
Rainfall in Chesterfield
Chesterfield has a notably wet climate with abundant precipitation, recording 1101 mm (43 in) of rain/snowfall per year. The climate in Chesterfield shows significant variation throughout the year. Expect high rainfall in April, the wettest month, with an average of 124 mm (4.9 in) of precipitation over 12 rainy days.
In contrast, the driest month January offers drier and sunnier days, with around 48 mm (1.9 in) of snow/rainfall over 7 snowy/rainy days. For more details, please visit our Chesterfield Precipitation page.
The mean monthly precipitation over the year, including rain, hail, and snow
The average number of days each month with precipitation
Sunshine Hours in Chesterfield
For those who appreciate different seasons, Chesterfield serves as an ideal destination. Expect longer, more sun-filled days in July with an average of 10.4 hours of sunshine daily, and embrace the darker days in December, offering only 4.3 hours of daily sunlight.
Visit our detailed sunshine hours page for more information.
Monthly hours of sunshine
Daily hours of sunshine
Daily percentage of sunshine
Humidity in Chesterfield by Month
The relative humidity is high throughout the year in Chesterfield.
The city experiences its highest humidity in December, reaching 74%. In April, the humidity drops to its lowest level at 63%. What does this mean? Read our detailed page on humidity levels for further details.
Relative humidity over the year
Best Time to Visit Chesterfield
Monthly ratings reflect general weather comfort, based on daytime temperature and rainfall. Swimming and winter conditions are highlighted separately where relevant.
- Best overall: September and October
- Warmest weather: June, July and August
- Most sunshine: July
- Fewest rainy days: January, February, August and November
- Seasonal pattern: Very warm summers and cold winters
- Coldest conditions: January, with freezing nights around -6°C (21°F).
Frequently asked questions about the climate in Chesterfield
What is the best time to visit Chesterfield?
September and October typically offer the most optimal weather in Chesterfield. In contrast, January, February and December tend to have less optimal conditions. Chesterfield has very warm summers and cold winters.
What temperatures can I expect in Chesterfield?
Daytime highs range from 5°C (41°F) in January to 31°C (88°F) in July. Nighttime lows range from -6°C (21°F) to 21°C (70°F). Temperatures vary considerably through the year.
How much rain does Chesterfield get?
Annual rainfall is around 1101 mm (43 in). April is the wettest month with 124 mm (4.9 in), while January is the driest with 48 mm (1.9 in).
How sunny is Chesterfield?
Chesterfield receives around 2,594 hours of sunshine per year. July is the sunniest month with 311 hours, while December is the cloudiest with just 128 hours. Overall, Chesterfield enjoys abundant sunshine.
Chesterfield 3-Day Forecast
Chesterfield (MO) 3-Day Forecast
Chesterfield on the map
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