Thayer, MO Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Thayer, a city in Oregon County, Missouri.
Tonight
69°F
Clear
Clear. Low around 69, with temperatures rising to around 71 overnight. South wind around 3 mph.
7-day forecast for Thayer
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 69°F | Clear | 3 mph S | 2% |
| Saturday | 100°F | Sunny | 1 to 7 mph SW | 1% |
| Saturday Night | 69°F | Mostly Clear | 2 to 6 mph SW | 0% |
| Sunday | 98°F | Mostly Sunny | 1 to 7 mph W | 0% |
| Sunday Night | 68°F | Mostly Cloudy | 3 mph NW | 9% |
| Monday | 92°F | Partly Sunny then Chance Showers And Thunderstorms | 1 to 7 mph N | 48% |
| Monday Night | 62°F | Chance Showers And Thunderstorms | 6 mph N | 48% |
| Tuesday | 84°F | Mostly Sunny | 6 to 9 mph N | 12% |
| Tuesday Night | 56°F | Partly Cloudy | 5 to 10 mph N | 7% |
| Wednesday | 82°F | Sunny | 6 mph N | 1% |
| Wednesday Night | 55°F | Mostly Clear | 2 to 6 mph NE | 0% |
| Thursday | 82°F | Sunny | 6 mph NE | 3% |
| Thursday Night | 56°F | Mostly Clear | 2 to 6 mph NE | 3% |
| Friday | 82°F | Mostly Sunny | 3 to 7 mph NE | 6% |
Forecast source: National Weather Service (api.weather.gov) for Thayer (36.522, -91.541). Updated through the day.
Growing snapshot for Thayer
Last spring frost
Apr 12
First fall frost
Oct 24
Growing season
194 days
Hardiness zone
7a
More local growing data for Thayer: nearby ZIP 65791 weather · frost dates · planting calendar · Missouri frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Mammoth Spring, Ar (6.2 mi from Thayer). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.