McCallsburg, IA Weather & Growing Conditions
Today
79°F
Showers And Thunderstorms Likely
Showers and thunderstorms likely. Partly sunny. High near 79, with temperatures falling to around 76 in the afternoon. Northwest wind 6 to 9 mph. Chance of precipitation is 70%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 79°F | Showers And Thunderstorms Likely | 6 to 9 mph NW | 72% |
| Tonight | 61°F | Showers And Thunderstorms | 5 to 9 mph NNE | 83% |
| Wednesday | 73°F | Chance Showers And Thunderstorms | 6 mph NE | 41% |
| Wednesday Night | 55°F | Slight Chance Rain Showers then Mostly Clear | 3 mph NE | 15% |
| Thursday | 80°F | Sunny | 3 mph E | 1% |
| Thursday Night | 60°F | Mostly Clear | 3 mph SE | 1% |
| Friday | 83°F | Sunny | 2 to 8 mph S | 8% |
| Friday Night | 65°F | Mostly Clear | 6 mph S | 14% |
| Saturday | 87°F | Sunny | 3 to 9 mph S | 14% |
| Saturday Night | 70°F | Mostly Clear then Slight Chance Showers And Thunderstorms | 10 mph S | 16% |
| Sunday | 88°F | Slight Chance Showers And Thunderstorms then Mostly Sunny | 10 mph S | 16% |
| Sunday Night | 70°F | Slight Chance Showers And Thunderstorms | 9 mph SSE | 34% |
| Monday | 87°F | Chance Showers And Thunderstorms then Slight Chance Showers And Thunderstorms | 8 to 12 mph S | 34% |
| Monday Night | 70°F | Mostly Cloudy then Chance Showers And Thunderstorms | 12 mph E | 29% |
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 Aug 4, 2026.