Lockport, IL Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Lockport, a city in Will County, Illinois.
This Afternoon
72°F
Chance Rain
A chance of rain before 3pm, then a chance of rain and a slight chance of thunderstorms. Mostly cloudy. High near 72, with temperatures falling to around 69 in the afternoon. South wind 15 to 20 mph, with gusts as high as 35 mph. Chance of precipitation is 40%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast for Lockport
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 72°F | Chance Rain | 15 to 20 mph S | 41% |
| Tonight | 60°F | Rain | 15 mph S | 85% |
| Wednesday | 63°F | Rain Likely then Mostly Cloudy | 15 mph SSW | 57% |
| Wednesday Night | 48°F | Mostly Cloudy | 15 mph SW | 13% |
| Thursday | 57°F | Chance Rain | 10 to 15 mph WSW | 25% |
| Thursday Night | 43°F | Chance Rain | 5 to 10 mph WNW | 39% |
| Friday | 53°F | Slight Chance Rain | 10 mph N | 24% |
| Friday Night | 37°F | Mostly Cloudy | 5 to 10 mph NNW | 10% |
| Saturday | 52°F | Mostly Sunny | 5 mph WNW | 7% |
| Saturday Night | 35°F | Partly Cloudy | 0 to 5 mph WSW | 4% |
| Sunday | 57°F | Mostly Sunny | 5 to 10 mph W | 13% |
| Sunday Night | 36°F | Mostly Clear | 5 to 10 mph WNW | 8% |
| Monday | 61°F | Sunny | 5 to 10 mph WSW | 4% |
| Monday Night | 40°F | Mostly Clear | 5 to 10 mph WSW | 2% |
Forecast source: National Weather Service (api.weather.gov) for Lockport (41.591, -88.030). Updated through the day.
Growing snapshot for Lockport
Last spring frost
Apr 20
First fall frost
Oct 22
Growing season
184 days
Hardiness zone
6a
More local growing data for Lockport: nearby ZIP 60441 weather · frost dates · planting calendar · Illinois frost dates
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Climate data from the nearest NOAA station, Romeoville Wfo, Il (1.9 mi from Lockport). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 3, 2026.