Rochester, IL Weather Forecast
Local 7-day forecast
Mostly Cloudy
Track current conditions, temperature changes, wind, and the full daily outlook for Rochester, IL in one place.
Mostly cloudy, with a high near 70. North northeast wind 8 to 12 mph.
Local Weather Overview
This forecast page for Rochester, 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: Sep 22, 2026 9:37 AM CDT.
The active forecast window currently covers Sep 23 to Sep 28, 2026 for Rochester, IL.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Sep 23 to Sep 28, 2026
- Latest sync
- Sep 22, 2026 9:37 AM CDT
- Forecast office
- ILX
- Source
- NOAA / NWS
Daily Outlook
This Week in Rochester
Monday looks like the warmest upcoming period in Rochester at 84 degrees F.
Friday Night is the coolest period ahead with temperatures near 52 degrees F.
The strongest winds are forecast for Wednesday at about 8 to 12 mph NNE.
Precipitation is mentioned in 3 upcoming forecast periods.
Forecast Details
- Last updated
- Sep 22, 2026 9:37 AM CDT
- Coverage
- 6 days
- Time zone
- America/Chicago
- Forecast office
- ILX
- Radar station
- KILX
Weather data is provided by the National Weather Service and refreshed automatically for U.S. locations.
Open NOAA sourceExtended Forecast
Mostly cloudy, with a low around 56. Northeast wind 3 to 9 mph.
Partly sunny, with a high near 75. Northeast wind around 6 mph.
Partly cloudy, with a low around 56. Northeast wind around 5 mph.
Partly sunny, with a high near 75. East wind around 6 mph.
Mostly cloudy, with a low around 52.
Partly sunny, with a high near 74.
A slight chance of rain showers after 1am. Mostly cloudy, with a low around 55.
A slight chance of rain showers before 7am. Partly sunny, with a high near 79.
Partly cloudy, with a low around 58.
Mostly sunny, with a high near 84.
A slight chance of rain showers after 1am. Partly cloudy, with a low around 62.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Wednesday
Sep 23
|
Mostly Cloudy
|
70°F |
8 to 12 mph
NNE
|
|
Wednesday Night
Sep 23
|
Mostly Cloudy
|
56°F |
3 to 9 mph
NE
|
|
Thursday
Sep 24
|
Partly Sunny
|
75°F |
6 mph
NE
|
|
Thursday Night
Sep 24
|
Partly Cloudy
|
56°F |
5 mph
NE
|
|
Friday
Sep 25
|
Partly Sunny
|
75°F |
6 mph
E
|
|
Friday Night
Sep 25
|
Mostly Cloudy
|
52°F |
6 mph
E
|
|
Saturday
Sep 26
|
Partly Sunny
|
74°F |
5 mph
SE
|
|
Saturday Night
Sep 26
|
Mostly Cloudy then Slight Chance Rain Showers
|
55°F |
3 mph
SE
|
|
Sunday
Sep 27
|
Slight Chance Rain Showers then Partly Sunny
|
79°F |
5 mph
SE
|
|
Sunday Night
Sep 27
|
Partly Cloudy
|
58°F |
3 mph
ESE
|
|
Monday
Sep 28
|
Mostly Sunny
|
84°F |
5 mph
SE
|
|
Monday Night
Sep 28
|
Partly Cloudy then Slight Chance Rain Showers
|
62°F |
5 mph
SE
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Rochester.