McCallsburg, IA Weather & Growing Conditions
Today
78°F
Chance Showers And Thunderstorms
A chance of showers and thunderstorms before 1pm, then a slight chance of showers and thunderstorms between 1pm and 2pm, then a chance of showers and thunderstorms between 2pm and 4pm, then a slight chance of showers and thunderstorms. Mostly cloudy. High near 78, with temperatures falling to around 75 in the afternoon. West wind around 8 mph. Chance of precipitation is 40%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 78°F | Chance Showers And Thunderstorms | 8 mph W | 44% |
| Tonight | 61°F | Chance Showers And Thunderstorms | 9 mph N | 31% |
| Sunday | 65°F | Chance Rain Showers | 10 to 14 mph NE | 29% |
| Sunday Night | 55°F | Chance Rain Showers | 13 mph ENE | 46% |
| Monday | 61°F | Chance Rain Showers | 13 mph NE | 50% |
| Monday Night | 50°F | Chance Rain Showers | 7 to 10 mph NE | 50% |
| Tuesday | 60°F | Partly Sunny | 8 mph ENE | 12% |
| Tuesday Night | 46°F | Partly Cloudy | 2 to 6 mph ENE | 2% |
| Wednesday | 65°F | Sunny | 5 mph E | 1% |
| Wednesday Night | 51°F | Partly Cloudy | 3 mph E | 5% |
| Thursday | 66°F | Slight Chance Rain Showers | 3 mph ESE | 15% |
| Thursday Night | 55°F | Mostly Cloudy | 2 mph ESE | 10% |
| Friday | 68°F | Partly Sunny | 5 mph ESE | 8% |
| Friday Night | 56°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.