Morrison, IL Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Morrison, a city in Whiteside County, Illinois.
Overnight
52°F
Slight Chance Rain Showers
A slight chance of rain showers after 5am. Mostly cloudy. Low around 52, with temperatures rising to around 55 overnight. South wind 10 to 15 mph. Chance of precipitation is 20%.
7-day forecast for Morrison
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 52°F | Slight Chance Rain Showers | 10 to 15 mph S | 20% |
| Wednesday | 57°F | Chance Rain Showers | 15 mph SW | 34% |
| Wednesday Night | 45°F | Mostly Cloudy then Slight Chance Rain Showers | 10 to 15 mph SW | 19% |
| Thursday | 55°F | Chance Rain Showers | 10 to 15 mph W | 45% |
| Thursday Night | 40°F | Slight Chance Rain Showers then Mostly Cloudy | 10 mph NW | 21% |
| Friday | 50°F | Partly Sunny | 5 to 10 mph N | 7% |
| Friday Night | 31°F | Mostly Clear | 0 to 5 mph N | 0% |
| Saturday | 52°F | Sunny | 0 to 5 mph NW | 0% |
| Saturday Night | 33°F | Mostly Clear | 0 to 5 mph W | 2% |
| Sunday | 57°F | Sunny | 5 to 10 mph W | 3% |
| Sunday Night | 34°F | Clear | 0 to 5 mph W | 0% |
| Monday | 62°F | Sunny | 0 to 10 mph SW | 0% |
| Monday Night | 39°F | Mostly Clear | 5 mph W | 0% |
| Tuesday | 62°F | Sunny | 5 mph NW | 0% |
Forecast source: National Weather Service (api.weather.gov) for Morrison (41.808, -89.962). Updated through the day.
Growing snapshot for Morrison
Last spring frost
Apr 26
First fall frost
Oct 13
Growing season
167 days
Hardiness zone
5b
More local growing data for Morrison: nearby ZIP 61270 weather · frost dates · planting calendar · Illinois frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Morrison, Il (2.2 mi from Morrison). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.