Montrose, IL Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Montrose, a village in Jasper County, Illinois.
This Afternoon
93°F
Chance Showers And Thunderstorms
A chance of showers and thunderstorms. Mostly sunny, with a high near 93. Heat index values as high as 103. Northeast wind around 6 mph. Chance of precipitation is 30%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast for Montrose
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 93°F | Chance Showers And Thunderstorms | 6 mph NE | 31% |
| Tonight | 71°F | Slight Chance Showers And Thunderstorms then Partly Cloudy | 7 mph ESE | 22% |
| Saturday | 93°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 5 to 9 mph SW | 17% |
| Saturday Night | 70°F | Mostly Cloudy | 3 to 8 mph SSW | 13% |
| Sunday | 91°F | Slight Chance Showers And Thunderstorms | 3 to 7 mph WNW | 23% |
| Sunday Night | 64°F | Slight Chance Showers And Thunderstorms | 8 mph NNE | 46% |
| Monday | 77°F | Rain Showers Likely | 12 mph NE | 61% |
| Monday Night | 57°F | Showers And Thunderstorms Likely then Chance Showers And Thunderstorms | 8 to 14 mph NE | 59% |
| Tuesday | 72°F | Chance Showers And Thunderstorms then Partly Sunny | 13 mph NNE | 38% |
| Tuesday Night | 54°F | Mostly Cloudy | 6 to 13 mph NNE | 7% |
| Wednesday | 73°F | Partly Sunny | 9 mph NNE | 3% |
| Wednesday Night | 54°F | Partly Cloudy | 3 to 9 mph NNE | 3% |
| Thursday | 74°F | Mostly Sunny | 5 to 8 mph NNE | 4% |
| Thursday Night | 56°F | Partly Cloudy | 3 to 7 mph NNE | 4% |
Forecast source: National Weather Service (api.weather.gov) for Montrose (39.166, -88.378). Updated through the day.
Growing snapshot for Montrose
Last spring frost
Apr 13
First fall frost
Oct 22
Growing season
190 days
Hardiness zone
6b
More local growing data for Montrose: nearby ZIP 62445 weather · frost dates · planting calendar · Illinois frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Newton, Il (14.4 mi from Montrose). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.