Newtown, MO Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Newtown, a town in Sullivan County, Missouri.
This Afternoon
69°F
Chance Rain Showers
A chance of rain showers. Partly sunny. High near 69, with temperatures falling to around 61 in the afternoon. South wind 12 to 16 mph, with gusts as high as 25 mph. Chance of precipitation is 50%. New rainfall amounts between a tenth and quarter of an inch possible.
7-day forecast for Newtown
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 69°F | Chance Rain Showers | 12 to 16 mph S | 47% |
| Tonight | 47°F | Slight Chance Rain Showers then Cloudy | 12 mph WSW | 19% |
| Wednesday | 54°F | Mostly Cloudy | 10 to 15 mph W | 10% |
| Wednesday Night | 42°F | Mostly Cloudy | 8 mph WSW | 3% |
| Thursday | 54°F | Mostly Cloudy then Chance Rain Showers | 6 to 10 mph WNW | 25% |
| Thursday Night | 41°F | Mostly Cloudy | 6 mph NNW | 11% |
| Friday | 53°F | Partly Sunny | 3 to 8 mph N | 6% |
| Friday Night | 35°F | Mostly Cloudy | 2 mph N | 0% |
| Saturday | 55°F | Partly Sunny | 0 to 3 mph W | 1% |
| Saturday Night | 37°F | Mostly Clear | 2 mph W | 5% |
| Sunday | 61°F | Sunny | 2 to 6 mph W | 3% |
| Sunday Night | 38°F | Mostly Clear | 3 mph SW | 0% |
| Monday | 65°F | Sunny | 3 to 12 mph SW | 0% |
| Monday Night | 42°F | Mostly Clear | 5 mph WNW | 0% |
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 Nov 4, 2026.