Gray Summit, MO Weather & Growing Conditions
Today
89°F
Sunny
Sunny, with a high near 89. South wind around 3 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 89°F | Sunny | 3 mph S | 0% |
| Tonight | 67°F | Mostly Clear | 3 mph SE | 0% |
| Wednesday | 90°F | Sunny | 2 mph S | 12% |
| Wednesday Night | 70°F | Slight Chance Showers And Thunderstorms | 3 mph S | 67% |
| Thursday | 87°F | Showers And Thunderstorms Likely | 2 mph S | 68% |
| Thursday Night | 68°F | Partly Cloudy then Chance Showers And Thunderstorms | 1 mph W | 33% |
| Friday | 87°F | Chance Showers And Thunderstorms | 1 mph SW | 33% |
| Friday Night | 69°F | Chance Showers And Thunderstorms | 0 mph | 28% |
| Saturday | 89°F | Chance Showers And Thunderstorms then Mostly Sunny | 2 mph SW | 28% |
| Saturday Night | 71°F | Mostly Clear | 3 mph S | 6% |
| Sunday | 92°F | Sunny | 3 mph SW | 4% |
| Sunday Night | 73°F | Mostly Clear | 5 mph S | 5% |
| Monday | 93°F | Sunny | 5 mph SW | 4% |
| Monday Night | 74°F | Mostly Clear | 5 mph S | 13% |
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 Aug 4, 2026.