Lemay, MO Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Lemay, a community in St. Louis County, Missouri.
This Afternoon
73°F
Rain
Rain and a slight chance of thunderstorms. Cloudy. High near 73, with temperatures falling to around 67 in the afternoon. South wind around 18 mph, with gusts as high as 30 mph. Chance of precipitation is 90%.
7-day forecast for Lemay
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 73°F | Rain | 18 mph S | 91% |
| Tonight | 54°F | Light Rain | 7 to 15 mph S | 94% |
| Wednesday | 64°F | Mostly Cloudy | 6 to 12 mph W | 5% |
| Wednesday Night | 46°F | Partly Cloudy | 5 mph SW | 0% |
| Thursday | 67°F | Sunny | 3 to 8 mph W | 1% |
| Thursday Night | 46°F | Mostly Cloudy | 5 mph NW | 11% |
| Friday | 59°F | Partly Sunny | 5 to 8 mph NW | 5% |
| Friday Night | 41°F | Mostly Cloudy | 1 to 6 mph N | 1% |
| Saturday | 57°F | Partly Sunny | 3 mph NW | 0% |
| Saturday Night | 39°F | Partly Cloudy | 1 mph NW | 0% |
| Sunday | 63°F | Sunny | 1 to 5 mph W | 9% |
| Sunday Night | 39°F | Mostly Clear | 3 mph W | 5% |
| Monday | 67°F | Sunny | 2 to 6 mph SW | 2% |
| Monday Night | 43°F | Mostly Clear | 3 mph SW | 1% |
Forecast source: National Weather Service (api.weather.gov) for Lemay (38.534, -90.285). Updated through the day.
Growing snapshot for Lemay
Last spring frost
Apr 6
First fall frost
Oct 27
Growing season
203 days
Hardiness zone
7a
More local growing data for Lemay: nearby ZIP 63125 weather · frost dates · planting calendar · Missouri frost dates
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Climate data from the nearest NOAA station, Cahokia, Il (6.3 mi from Lemay). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 3, 2026.