Morrison, IA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Morrison, a city in Grundy County, Iowa.
Overnight
64°F
Mostly Cloudy
Mostly cloudy. Low around 64, with temperatures rising to around 66 overnight. South wind around 7 mph.
7-day forecast for Morrison
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 64°F | Mostly Cloudy | 7 mph S | 2% |
| Tuesday | 79°F | Chance Showers And Thunderstorms | 6 to 9 mph W | 43% |
| Tuesday Night | 60°F | Showers And Thunderstorms | 5 to 9 mph N | 76% |
| Wednesday | 74°F | Chance Showers And Thunderstorms | 5 mph NNE | 41% |
| Wednesday Night | 54°F | Slight Chance Rain Showers | 1 to 5 mph N | 19% |
| Thursday | 79°F | Sunny | 3 mph E | 2% |
| Thursday Night | 59°F | Mostly Clear | 2 mph SSE | 0% |
| Friday | 82°F | Sunny | 2 to 8 mph SSE | 8% |
| Friday Night | 65°F | Mostly Clear | 7 mph S | 12% |
| Saturday | 85°F | Sunny | 5 to 8 mph S | 10% |
| Saturday Night | 70°F | Mostly Clear then Slight Chance Showers And Thunderstorms | 9 to 13 mph SSW | 17% |
| Sunday | 86°F | Slight Chance Showers And Thunderstorms then Mostly Sunny | 10 mph S | 17% |
| Sunday Night | 69°F | Chance Showers And Thunderstorms | 9 mph SSE | 34% |
| Monday | 85°F | Chance Showers And Thunderstorms then Slight Chance Showers And Thunderstorms | 7 to 10 mph S | 34% |
Forecast source: National Weather Service (api.weather.gov) for Morrison (42.343, -92.673). Updated through the day.
Growing snapshot for Morrison
Last spring frost
Apr 29
First fall frost
Oct 9
Growing season
160 days
Hardiness zone
5a
More local growing data for Morrison: nearby ZIP 50657 weather · frost dates · planting calendar · Iowa frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Grundy Ctr, Ia (4.6 mi from Morrison). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.