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.
Overnight
76°F
Mostly Clear
Mostly clear, with a low around 76. South wind around 5 mph.
7-day forecast for Maryland Heights
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 76°F | Mostly Clear | 5 mph S | 3% |
| Saturday | 99°F | Partly Sunny | 5 to 8 mph SW | 5% |
| Saturday Night | 75°F | Partly Cloudy | 5 mph SW | 4% |
| Sunday | 93°F | Slight Chance Rain Showers then Slight Chance Showers And Thunderstorms | 3 to 7 mph W | 38% |
| Sunday Night | 68°F | Showers And Thunderstorms Likely | 6 to 9 mph NE | 68% |
| Monday | 79°F | Showers And Thunderstorms Likely | 7 to 10 mph NE | 68% |
| Monday Night | 60°F | Chance Showers And Thunderstorms | 7 to 10 mph NE | 39% |
| Tuesday | 72°F | Slight Chance Rain Showers then Mostly Cloudy | 12 mph N | 20% |
| Tuesday Night | 55°F | Mostly Cloudy | 5 to 12 mph N | 3% |
| Wednesday | 74°F | Mostly Sunny | 9 mph N | 1% |
| Wednesday Night | 57°F | Partly Cloudy | 2 to 8 mph NE | 0% |
| Thursday | 77°F | Mostly Sunny | 3 to 7 mph N | 1% |
| Thursday Night | 59°F | Partly Cloudy | 2 to 6 mph NE | 3% |
| Friday | 78°F | Partly Sunny | 3 to 7 mph NE | 7% |
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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Bel-Nor
Bel-Ridge
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Bellefontaine Neighbors
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Bridgeton
Calverton Park
Castle Point
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Charlack
Chesterfield
Clarkson Valley
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Concord
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 Sep 19, 2026.