Toronto, IA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Toronto, a city in Clinton County, Iowa.
Today
83°F
Mostly Sunny then Chance Showers And Thunderstorms
A chance of showers and thunderstorms after 2pm. Mostly sunny. High near 83, with temperatures falling to around 81 in the afternoon. Southwest wind around 5 mph. Chance of precipitation is 30%.
7-day forecast for Toronto
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 83°F | Mostly Sunny then Chance Showers And Thunderstorms | 5 mph SW | 30% |
| Tonight | 64°F | Showers And Thunderstorms Likely | 0 to 5 mph N | 87% |
| Wednesday | 76°F | Showers And Thunderstorms Likely then Chance Showers And Thunderstorms | 0 mph | 72% |
| Wednesday Night | 59°F | Chance Showers And Thunderstorms | 0 mph | 53% |
| Thursday | 79°F | Chance Rain Showers then Mostly Sunny | 0 mph | 30% |
| Thursday Night | 59°F | Mostly Clear | 0 mph | 4% |
| Friday | 82°F | Mostly Sunny | 0 mph | 4% |
| Friday Night | 64°F | Mostly Clear | 0 mph | 8% |
| Saturday | 85°F | Sunny | 0 to 5 mph S | 11% |
| Saturday Night | 68°F | Mostly Clear then Slight Chance Showers And Thunderstorms | 0 to 5 mph S | 21% |
| Sunday | 86°F | Slight Chance Showers And Thunderstorms then Mostly Sunny | 5 mph S | 21% |
| Sunday Night | 68°F | Chance Showers And Thunderstorms | 0 to 5 mph S | 38% |
| Monday | 86°F | Chance Showers And Thunderstorms then Slight Chance Showers And Thunderstorms | 0 to 5 mph S | 36% |
| Monday Night | 69°F | Chance Showers And Thunderstorms | 5 mph E | 37% |
Forecast source: National Weather Service (api.weather.gov) for Toronto (41.903, -90.863). Updated through the day.
Growing snapshot for Toronto
Last spring frost
Apr 27
First fall frost
Oct 10
Growing season
165 days
Hardiness zone
5a
More local growing data for Toronto: nearby ZIP 52777 weather · frost dates · planting calendar · Iowa frost dates
Nearby towns & communities
Andover
Calamus
Camanche
Charlotte
Clinton
Delmar
DeWitt
Goose Lake
Grand Mound
Lost Nation
Low Moor
Welton
Wheatland
Climate data from the nearest NOAA station, Lowden, Ia (3.6 mi from Toronto). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.