Gray Summit, MO Weather & Growing Conditions
Overnight
73°F
Mostly Clear
Mostly clear, with a low around 73. South wind around 3 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 73°F | Mostly Clear | 3 mph S | 2% |
| Saturday | 96°F | Mostly Sunny | 5 mph SW | 4% |
| Saturday Night | 71°F | Partly Cloudy | 2 mph SW | 5% |
| Sunday | 91°F | Chance Rain Showers then Slight Chance Showers And Thunderstorms | 2 mph W | 38% |
| Sunday Night | 66°F | Showers And Thunderstorms Likely | 3 mph NE | 69% |
| Monday | 77°F | Showers And Thunderstorms Likely | 5 mph NE | 69% |
| Monday Night | 58°F | Chance Showers And Thunderstorms | 6 mph N | 49% |
| Tuesday | 69°F | Slight Chance Rain Showers then Partly Sunny | 6 mph N | 21% |
| Tuesday Night | 52°F | Mostly Cloudy | 2 to 6 mph N | 2% |
| Wednesday | 72°F | Mostly Sunny | 5 mph N | 1% |
| Wednesday Night | 53°F | Partly Cloudy | 3 mph N | 0% |
| Thursday | 75°F | Mostly Sunny | 3 mph N | 2% |
| Thursday Night | 56°F | Partly Cloudy | 2 mph NE | 5% |
| Friday | 75°F | Mostly Sunny | 3 mph NE | 9% |
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 (7.6 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.