Chesterfield, MO Weather Forecast
St. Louis County, Missouri
Live radar, warnings and storm tracking for Chesterfield, with free alerts the moment it counts.
The next few hours
A dry evening, mostly sunny
It is 49°, but the wind is taking it down to 47° on exposed skin. The sky is mostly sunny.
The wind backs into the west-southwest around 1 AM, which is the turn that usually comes ahead of the change rather than after it. Nothing in the next day and a half is wet enough to move plans for.
Taller, warmer bars mean heavier rain. Dotted means no reading for that hour.
Hour by hour
Quiet through the next day and a half
Nothing wet is expected over the next day and a half.
The overnight low settles near 41°. Tomorrow tops out near 50°.
Sunrise and sunset
Next five days, scored 0 to 100The first day or two use the HRRR and NBM cloud layers. Later days only have total cloud, so treat them as a rough guide.
Know when sunset at this place will be worth a photo
We score every sunrise and sunset here from the cloud, haze and smoke forecast, and let you know when one is likely to light up. Sunrise the evening before, sunset a few hours ahead.
Seven-day outlook
26–62°F across the weekThe week runs between 26° and 53°, with Tuesday the warmest day of it. There is no real trend across it: one day looks much like the next. Every day in the outlook stays dry.
Free alerts for Chesterfield
Every NWS warning, pushed to your phone, inbox or webhook the moment it is issued.
Chesterfield, MO at a glance
Chesterfield is home to about 49,166 people in St. Louis County, across 32 square miles. It ranks 14th by population of 211 places in Missouri with a forecast here. The nearest neighbour with its own forecast is Clarkson Valley, 2 miles away.
- County
- St. Louis County
- Population
- 49,166 2023 est.
- Land area
- 32 sq mi
- People per sq mi
- 1,544
- Forecast point
- 38.6581°N, 90.5760°W
How well can the network see Chesterfield?
The nearest Doppler radar is KLSX (St. Louis, MO), to the WNW. Its lowest scan passes about 320 ft above Chesterfield. That is about as close as US radar coverage gets: low-level rotation and gust fronts over Chesterfield show up clearly. Chesterfield is closer to its radar than 98% of US cities.
The closest weather station is KSUS (St Louis/Spirit of St Louis Arpt). Close enough that its readings are the conditions in town.
Forecasts near Chesterfield
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