Hopkinton, IA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Hopkinton, a city in Delaware County, Iowa.
Overnight
62°F
Partly Cloudy
Partly cloudy, with a low around 62. South wind around 5 mph.
7-day forecast for Hopkinton
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 62°F | Partly Cloudy | 5 mph S | 0% |
| Tuesday | 81°F | Partly Sunny then Chance Showers And Thunderstorms | 5 to 10 mph SW | 28% |
| Tuesday Night | 63°F | Showers And Thunderstorms Likely | 5 mph NW | 76% |
| Wednesday | 74°F | Chance Showers And Thunderstorms | 5 mph N | 49% |
| Wednesday Night | 56°F | Chance Showers And Thunderstorms | 0 to 5 mph N | 31% |
| Thursday | 79°F | Slight Chance Rain Showers then Sunny | 0 to 5 mph NE | 22% |
| Thursday Night | 59°F | Mostly Clear | 0 mph | 1% |
| Friday | 82°F | Sunny | 0 to 5 mph SE | 3% |
| Friday Night | 64°F | Mostly Clear | 5 mph S | 9% |
| Saturday | 86°F | Mostly Sunny | 5 to 10 mph S | 11% |
| Saturday Night | 69°F | Partly Cloudy then Chance Showers And Thunderstorms | 5 to 10 mph S | 25% |
| Sunday | 87°F | Chance Showers And Thunderstorms | 10 mph S | 25% |
| Sunday Night | 68°F | Chance Showers And Thunderstorms | 5 to 10 mph S | 42% |
| Monday | 86°F | Chance Showers And Thunderstorms | 5 to 10 mph S | 42% |
Forecast source: National Weather Service (api.weather.gov) for Hopkinton (42.343, -91.249). Updated through the day.
Growing snapshot for Hopkinton
Last spring frost
Apr 28
First fall frost
Oct 10
Growing season
164 days
Hardiness zone
5a
More local growing data for Hopkinton: nearby ZIP 52237 weather · frost dates · planting calendar · Iowa frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Cascade, Ia (12.6 mi from Hopkinton). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.