Newton, IA Weather & Growing Conditions
Overnight
66°F
Partly Cloudy
Partly cloudy, with a low around 66. South wind around 6 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 66°F | Partly Cloudy | 6 mph S | 1% |
| Tuesday | 84°F | Chance Showers And Thunderstorms | 5 to 8 mph W | 29% |
| Tuesday Night | 63°F | Showers And Thunderstorms | 6 to 10 mph NNE | 89% |
| Wednesday | 74°F | Showers And Thunderstorms then Chance Showers And Thunderstorms | 6 mph NNE | 77% |
| Wednesday Night | 57°F | Chance Rain Showers | 5 mph NNE | 42% |
| Thursday | 80°F | Sunny | 3 mph ENE | 3% |
| Thursday Night | 61°F | Mostly Clear | 2 mph SE | 2% |
| Friday | 84°F | Sunny | 2 to 6 mph SSE | 6% |
| Friday Night | 66°F | Mostly Clear | 6 mph SSE | 14% |
| Saturday | 88°F | Sunny | 3 to 8 mph S | 11% |
| Saturday Night | 71°F | Mostly Clear then Slight Chance Showers And Thunderstorms | 10 mph S | 15% |
| Sunday | 89°F | Slight Chance Showers And Thunderstorms then Sunny | 10 mph S | 15% |
| Sunday Night | 70°F | Chance Showers And Thunderstorms | 9 mph SSE | 32% |
| Monday | 89°F | Chance Showers And Thunderstorms then Slight Chance Showers And Thunderstorms | 8 to 13 mph S | 32% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Newton, IA
Last spring frost
Apr 22
First fall frost
Oct 17
Growing season
174 days
Hardiness zone
5b
Explore more for Newton, IA: full frost dates · planting calendar · Iowa frost dates
Climate data from the nearest NOAA station, Newton, Ia (0.5 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.