McCallsburg, IA Weather & Growing Conditions
This Afternoon
77°F
Chance Showers And Thunderstorms
A chance of showers and thunderstorms. Mostly cloudy. High near 77, with temperatures falling to around 72 in the afternoon. West northwest wind 5 to 8 mph. Chance of precipitation is 30%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 77°F | Chance Showers And Thunderstorms | 5 to 8 mph WNW | 33% |
| Tonight | 60°F | Chance Showers And Thunderstorms | 7 to 10 mph N | 35% |
| Sunday | 65°F | Slight Chance Rain Showers then Chance Drizzle | 14 mph NE | 40% |
| Sunday Night | 55°F | Chance Drizzle then Rain Showers Likely | 13 mph ENE | 55% |
| Monday | 59°F | Rain Showers | 13 mph NE | 81% |
| Monday Night | 50°F | Rain Showers | 7 to 10 mph NE | 81% |
| Tuesday | 60°F | Slight Chance Rain Showers then Partly Sunny | 8 mph NE | 18% |
| Tuesday Night | 47°F | Partly Cloudy | 2 to 6 mph ENE | 4% |
| Wednesday | 64°F | Mostly Sunny | 5 mph E | 1% |
| Wednesday Night | 52°F | Partly Cloudy | 3 mph E | 7% |
| Thursday | 66°F | Slight Chance Rain Showers | 5 mph SE | 20% |
| Thursday Night | 56°F | Slight Chance Rain Showers | 2 mph ESE | 20% |
| Friday | 68°F | Slight Chance Rain Showers then Mostly Cloudy | 5 mph ESE | 20% |
| Friday Night | 58°F | Mostly Cloudy | 3 mph ESE | 9% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for McCallsburg, IA
Last spring frost
Apr 24
First fall frost
Oct 12
Growing season
170 days
Hardiness zone
5a
Explore more for McCallsburg, IA: full frost dates · planting calendar · Iowa frost dates
Climate data from the nearest NOAA station, Colo, Ia (11.6 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.