Maryland Heights, MO Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Maryland Heights, a city in St. Louis County, Missouri.
Today
91°F
Patchy Fog then Sunny
Patchy fog before 8am. Sunny, with a high near 91. South wind around 3 mph.
7-day forecast for Maryland Heights
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 91°F | Patchy Fog then Sunny | 3 mph S | 0% |
| Tonight | 71°F | Mostly Clear | 5 mph SE | 0% |
| Wednesday | 92°F | Sunny | 2 to 6 mph S | 12% |
| Wednesday Night | 73°F | Chance Showers And Thunderstorms | 7 mph S | 69% |
| Thursday | 88°F | Showers And Thunderstorms Likely | 5 mph S | 69% |
| Thursday Night | 71°F | Chance Showers And Thunderstorms | 1 to 5 mph SE | 26% |
| Friday | 89°F | Chance Showers And Thunderstorms | 3 mph SW | 26% |
| Friday Night | 72°F | Chance Showers And Thunderstorms | 3 mph S | 27% |
| Saturday | 91°F | Chance Showers And Thunderstorms then Mostly Sunny | 5 mph SW | 27% |
| Saturday Night | 74°F | Mostly Clear | 6 mph S | 6% |
| Sunday | 93°F | Sunny | 5 to 8 mph SW | 5% |
| Sunday Night | 76°F | Mostly Clear | 7 mph S | 5% |
| Monday | 95°F | Sunny | 8 mph SW | 5% |
| Monday Night | 77°F | Slight Chance Showers And Thunderstorms | 8 mph S | 16% |
Forecast source: National Weather Service (api.weather.gov) for Maryland Heights (38.717, -90.472). Updated through the day.
Growing snapshot for Maryland Heights
Last spring frost
Apr 4
First fall frost
Oct 29
Growing season
206 days
Hardiness zone
7a
More local growing data for Maryland Heights: nearby ZIP 63146 weather · frost dates · planting calendar · Missouri frost dates
Nearby towns & communities
Affton
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Brentwood
Bridgeton
Calverton Park
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Charlack
Chesterfield
Clarkson Valley
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Cool Valley
Country Club Hills
Country Life Acres
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Creve Coeur
Crystal Lake Park
Dellwood
Des Peres
Edmundson
Climate data from the nearest NOAA station, St Charles 7 Ssw, Mo (2.6 mi from Maryland Heights). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.