Thayer, MO Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Thayer, a city in Oregon County, Missouri.
Today
91°F
Areas Of Fog then Sunny
Areas of fog before 9am. Sunny. High near 91, with temperatures falling to around 89 in the afternoon. Heat index values as high as 93. Southeast wind around 2 mph.
7-day forecast for Thayer
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 91°F | Areas Of Fog then Sunny | 2 mph SE | 0% |
| Tonight | 67°F | Mostly Clear | 0 to 3 mph SE | 0% |
| Wednesday | 93°F | Sunny | 0 to 5 mph SE | 1% |
| Wednesday Night | 71°F | Partly Cloudy | 5 mph SE | 11% |
| Thursday | 93°F | Chance Showers And Thunderstorms | 1 to 5 mph S | 31% |
| Thursday Night | 71°F | Chance Showers And Thunderstorms | 3 mph S | 45% |
| Friday | 91°F | Chance Showers And Thunderstorms then Showers And Thunderstorms Likely | 1 to 5 mph S | 67% |
| Friday Night | 70°F | Chance Showers And Thunderstorms | 0 to 3 mph SW | 43% |
| Saturday | 92°F | Chance Showers And Thunderstorms | 0 to 3 mph SW | 30% |
| Saturday Night | 70°F | Slight Chance Showers And Thunderstorms then Partly Cloudy | 0 to 3 mph SW | 20% |
| Sunday | 93°F | Sunny | 0 to 6 mph S | 3% |
| Sunday Night | 71°F | Mostly Clear | 1 to 6 mph S | 3% |
| Monday | 94°F | Sunny | 1 to 7 mph S | 4% |
| Monday Night | 72°F | Mostly Clear | 2 to 7 mph S | 4% |
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 Aug 4, 2026.