Millersburg, IA Weather & Growing Conditions
Tonight
68°F
Chance Showers And Thunderstorms
A chance of showers and thunderstorms between 11pm and 4am, then showers and thunderstorms likely. Mostly cloudy, with a low around 68. Southeast wind around 10 mph. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 68°F | Chance Showers And Thunderstorms | 10 mph SE | 61% |
| Saturday | 81°F | Showers And Thunderstorms Likely | 5 to 10 mph SW | 62% |
| Saturday Night | 62°F | Chance Showers And Thunderstorms then Showers And Thunderstorms Likely | 5 to 10 mph N | 72% |
| Sunday | 68°F | Showers And Thunderstorms Likely | 10 to 15 mph NE | 72% |
| Sunday Night | 56°F | Showers And Thunderstorms Likely | 10 to 15 mph NE | 60% |
| Monday | 62°F | Rain Showers Likely | 15 mph NE | 59% |
| Monday Night | 51°F | Rain Showers Likely | 10 to 15 mph NE | 59% |
| Tuesday | 60°F | Slight Chance Rain Showers then Mostly Cloudy | 10 mph NE | 22% |
| Tuesday Night | 47°F | Partly Cloudy | 5 to 10 mph NE | 7% |
| Wednesday | 65°F | Mostly Sunny | 5 mph NE | 1% |
| Wednesday Night | 51°F | Partly Cloudy | 0 to 5 mph NE | 3% |
| Thursday | 67°F | Partly Sunny | 0 to 5 mph E | 10% |
| Thursday Night | 53°F | Partly Cloudy | 0 mph | 8% |
| Friday | 68°F | Mostly Sunny | 0 to 5 mph E | 7% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Millersburg, IA
Last spring frost
Apr 28
First fall frost
Oct 9
Growing season
164 days
Hardiness zone
5b
Explore more for Millersburg, IA: full frost dates · planting calendar · Iowa frost dates
Climate data from the nearest NOAA station, Williamsburg 1E, Ia (10.5 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.