Toronto, IA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Toronto, a city in Clinton County, Iowa.
Overnight
52°F
Mostly Cloudy
Mostly cloudy. Low around 52, with temperatures rising to around 54 overnight. Southwest wind around 5 mph.
7-day forecast for Toronto
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 52°F | Mostly Cloudy | 5 mph SW | 10% |
| Wednesday | 53°F | Chance Rain Showers | 10 mph SW | 35% |
| Wednesday Night | 46°F | Chance Rain Showers | 5 mph SW | 25% |
| Thursday | 55°F | Chance Rain Showers | 5 mph W | 53% |
| Thursday Night | 41°F | Mostly Cloudy | 5 mph N | 14% |
| Friday | 50°F | Partly Sunny | 5 mph N | 3% |
| Friday Night | 30°F | Mostly Clear | 0 mph | 0% |
| Saturday | 52°F | Sunny | 0 mph | 1% |
| Saturday Night | 34°F | Mostly Clear | 0 mph | 2% |
| Sunday | 57°F | Sunny | 0 to 5 mph W | 2% |
| Sunday Night | 35°F | Clear | 0 mph | 0% |
| Monday | 62°F | Sunny | 0 to 5 mph SW | 0% |
| Monday Night | 40°F | Mostly Clear | 0 to 5 mph W | 0% |
| Tuesday | 63°F | Sunny | 0 mph | 0% |
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
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Charlotte
Clinton
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DeWitt
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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 Nov 4, 2026.