Newtown, MO Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Newtown, a town in Sullivan County, Missouri.
Tonight
71°F
Partly Cloudy
Partly cloudy, with a low around 71. South southeast wind around 7 mph.
7-day forecast for Newtown
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 71°F | Partly Cloudy | 7 mph SSE | 13% |
| Saturday | 85°F | Slight Chance Showers And Thunderstorms then Partly Sunny | 5 to 10 mph SSW | 16% |
| Saturday Night | 65°F | Chance Showers And Thunderstorms then Showers And Thunderstorms Likely | 3 mph N | 74% |
| Sunday | 73°F | Chance Showers And Thunderstorms | 3 to 9 mph N | 53% |
| Sunday Night | 60°F | Chance Showers And Thunderstorms | 9 mph NE | 53% |
| Monday | 63°F | Chance Rain Showers | 10 mph NE | 52% |
| Monday Night | 54°F | Chance Rain Showers | 6 to 9 mph NE | 47% |
| Tuesday | 61°F | Mostly Cloudy | 9 mph NE | 12% |
| Tuesday Night | 48°F | Mostly Cloudy | 2 to 6 mph NE | 5% |
| Wednesday | 65°F | Mostly Sunny | 6 mph NE | 1% |
| Wednesday Night | 52°F | Partly Cloudy | 2 mph ENE | 3% |
| Thursday | 67°F | Partly Sunny | 3 mph E | 11% |
| Thursday Night | 55°F | Mostly Cloudy | 2 mph ENE | 11% |
| Friday | 68°F | Slight Chance Rain Showers | 5 mph E | 15% |
Forecast source: National Weather Service (api.weather.gov) for Newtown (40.375, -93.332). Updated through the day.
Growing snapshot for Newtown
Last spring frost
Apr 25
First fall frost
Oct 15
Growing season
174 days
Hardiness zone
5b
More local growing data for Newtown: nearby ZIP 64667 weather · frost dates · planting calendar · Missouri frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Princeton, Mo (12.6 mi from Newtown). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.