Rosemont, IL Weather Forecast
Local 7-day forecast
Clear
Track current conditions, temperature changes, wind, and the full daily outlook for Rosemont, IL in one place.
Clear, with a low around 41. North wind around 8 mph.
Local Weather Overview
This forecast page for Rosemont, IL is designed for quick trip planning, giving you a clean read on daytime highs, overnight lows, and changing conditions across the upcoming forecast window. Latest sync: Oct 17, 2026 6:08 AM CDT.
The active forecast window currently covers Oct 17 to Oct 23, 2026 for Rosemont, IL.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Oct 17 to Oct 23, 2026
- Latest sync
- Oct 17, 2026 6:08 AM CDT
- Forecast office
- LSX
- Source
- NOAA / NWS
Daily Outlook
This Week in Rosemont
Friday looks like the warmest upcoming period in Rosemont at 84 degrees F.
Saturday Night is the coolest period ahead with temperatures near 38 degrees F.
The strongest winds are forecast for Overnight at about 8 mph N.
The forecast from Oct 17 through Oct 23 stays mostly dry.
Forecast Details
- Last updated
- Oct 17, 2026 6:08 AM CDT
- Coverage
- 7 days
- Time zone
- America/Chicago
- Forecast office
- LSX
- Radar station
- KLSX
Weather data is provided by the National Weather Service and refreshed automatically for U.S. locations.
Open NOAA sourceExtended Forecast
Sunny, with a high near 62. North wind 2 to 7 mph.
Patchy frost after 4am. Clear, with a low around 38. Southeast wind around 2 mph.
Patchy frost before 9am. Sunny, with a high near 68. South wind 2 to 6 mph.
Clear, with a low around 39. Southeast wind 0 to 5 mph.
Sunny, with a high near 73.
Mostly clear, with a low around 43.
Sunny, with a high near 76.
Mostly clear, with a low around 45.
Sunny, with a high near 79.
Mostly clear, with a low around 49.
Sunny, with a high near 83.
Mostly clear, with a low around 52.
Sunny, with a high near 84.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Overnight
Oct 17
|
Clear
|
41°F |
8 mph
N
|
|
Saturday
Oct 17
|
Sunny
|
62°F |
2 to 7 mph
N
|
|
Saturday Night
Oct 17
|
Clear then Patchy Frost
|
38°F |
2 mph
SE
|
|
Sunday
Oct 18
|
Patchy Frost then Sunny
|
68°F |
2 to 6 mph
S
|
|
Sunday Night
Oct 18
|
Clear
|
39°F |
0 to 5 mph
SE
|
|
Monday
Oct 19
|
Sunny
|
73°F |
2 mph
SE
|
|
Monday Night
Oct 19
|
Mostly Clear
|
43°F |
0 to 3 mph
E
|
|
Tuesday
Oct 20
|
Sunny
|
76°F |
2 mph
E
|
|
Tuesday Night
Oct 20
|
Mostly Clear
|
45°F |
2 mph
NE
|
|
Wednesday
Oct 21
|
Sunny
|
79°F |
2 mph
SE
|
|
Wednesday Night
Oct 21
|
Mostly Clear
|
49°F |
1 mph
E
|
|
Thursday
Oct 22
|
Sunny
|
83°F |
2 mph
SE
|
|
Thursday Night
Oct 22
|
Mostly Clear
|
52°F |
1 mph
E
|
|
Friday
Oct 23
|
Sunny
|
84°F |
1 to 6 mph
SE
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Rosemont.
