Gray Summit, MO Weather & Growing Conditions
Tonight
71°F
Partly Cloudy
Partly cloudy, with a low around 71. Southeast wind around 5 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 71°F | Partly Cloudy | 5 mph SE | 7% |
| Saturday | 96°F | Partly Sunny | 5 mph SW | 5% |
| Saturday Night | 71°F | Partly Cloudy | 3 mph S | 2% |
| Sunday | 92°F | Slight Chance Rain Showers then Slight Chance Showers And Thunderstorms | 3 mph W | 20% |
| Sunday Night | 66°F | Chance Showers And Thunderstorms then Showers And Thunderstorms Likely | 3 mph N | 64% |
| Monday | 79°F | Showers And Thunderstorms Likely | 5 mph N | 69% |
| Monday Night | 59°F | Showers And Thunderstorms Likely then Slight Chance Showers And Thunderstorms | 5 mph N | 69% |
| Tuesday | 71°F | Slight Chance Rain Showers then Mostly Cloudy | 6 mph N | 23% |
| Tuesday Night | 53°F | Mostly Cloudy | 5 mph N | 6% |
| Wednesday | 73°F | Mostly Sunny | 3 mph N | 1% |
| Wednesday Night | 53°F | Partly Cloudy | 2 mph N | 1% |
| Thursday | 74°F | Mostly Sunny | 3 mph N | 3% |
| Thursday Night | 56°F | Partly Cloudy | 2 mph NE | 3% |
| Friday | 76°F | Mostly Sunny | 3 mph NE | 8% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Gray Summit, MO
Last spring frost
Apr 8
First fall frost
Oct 25
Growing season
199 days
Hardiness zone
6b
Explore more for Gray Summit, MO: full frost dates · planting calendar · Missouri frost dates
Climate data from the nearest NOAA station, Washington, Mo (7.9 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.