Richmond Heights, MO Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Richmond Heights, a city in St. Louis County, Missouri.
Today
90°F
Sunny
Sunny, with a high near 90. South wind 1 to 5 mph.
7-day forecast for Richmond Heights
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 90°F | Sunny | 1 to 5 mph S | 0% |
| Tonight | 70°F | Mostly Clear | 5 mph SE | 0% |
| Wednesday | 92°F | Sunny | 2 to 6 mph S | 11% |
| Wednesday Night | 73°F | Slight Chance Showers And Thunderstorms | 6 mph S | 66% |
| Thursday | 88°F | Showers And Thunderstorms Likely | 5 mph S | 69% |
| Thursday Night | 72°F | Chance Showers And Thunderstorms | 3 mph SE | 32% |
| Friday | 88°F | Chance Showers And Thunderstorms | 3 mph SW | 32% |
| Friday Night | 72°F | Chance Showers And Thunderstorms | 3 mph S | 28% |
| Saturday | 91°F | Chance Showers And Thunderstorms then Mostly Sunny | 5 mph SW | 28% |
| Saturday Night | 74°F | Mostly Clear | 6 mph S | 7% |
| Sunday | 93°F | Sunny | 5 to 8 mph S | 6% |
| Sunday Night | 75°F | Mostly Clear | 7 mph S | 5% |
| Monday | 95°F | Sunny | 5 to 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 Richmond Heights (38.631, -90.333). Updated through the day.
Growing snapshot for Richmond Heights
Last spring frost
Apr 1
First fall frost
Nov 4
Growing season
218 days
Hardiness zone
7a
More local growing data for Richmond Heights: nearby ZIP 63117 weather · frost dates · planting calendar · Missouri frost dates
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Climate data from the nearest NOAA station, St Louis Sci Ctr, Mo (3.2 mi from Richmond Heights). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.