Thayer, MO Weather & Growing Conditions
This Afternoon
99°F
Sunny
Sunny, with a high near 99. Heat index values as high as 99. Southwest wind around 8 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 99°F | Sunny | 8 mph SW | 0% |
| Tonight | 69°F | Mostly Clear | 3 to 7 mph SW | 0% |
| Sunday | 98°F | Mostly Sunny | 1 to 8 mph SW | 1% |
| Sunday Night | 68°F | Partly Cloudy then Slight Chance Showers And Thunderstorms | 5 mph NW | 22% |
| Monday | 92°F | Chance Showers And Thunderstorms | 2 to 6 mph N | 44% |
| Monday Night | 62°F | Chance Showers And Thunderstorms then Slight Chance Showers And Thunderstorms | 6 mph N | 44% |
| Tuesday | 83°F | Mostly Sunny | 6 to 9 mph N | 8% |
| Tuesday Night | 55°F | Partly Cloudy | 5 to 10 mph N | 7% |
| Wednesday | 81°F | Mostly Sunny | 6 mph N | 1% |
| Wednesday Night | 54°F | Mostly Clear | 5 mph NE | 0% |
| Thursday | 83°F | Sunny | 5 mph NE | 1% |
| Thursday Night | 56°F | Partly Cloudy | 3 mph NE | 1% |
| Friday | 84°F | Mostly Sunny | 2 to 6 mph NE | 3% |
| Friday Night | 57°F | Partly Cloudy | 5 mph NE | 3% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Thayer, MO
Last spring frost
Apr 12
First fall frost
Oct 24
Growing season
194 days
Hardiness zone
7a
Explore more for Thayer, MO: full frost dates · planting calendar · Missouri frost dates
Climate data from the nearest NOAA station, Mammoth Spring, Ar (6.2 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.