Portland, IL Weather Forecast
Local 7-day forecast
Partly Cloudy
Track current conditions, temperature changes, wind, and the full daily outlook for Portland, IL in one place.
Partly cloudy. Low around 36, with temperatures rising to around 38 overnight. Southwest wind 5 to 10 mph.
Local Weather Overview
This forecast page for Portland, 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: Nov 8, 2026 3:19 AM CST.
The active forecast window currently covers Nov 8 to Nov 14, 2026 for Portland, IL.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Nov 8 to Nov 14, 2026
- Latest sync
- Nov 8, 2026 3:19 AM CST
- Forecast office
- DVN
- Source
- NOAA / NWS
Daily Outlook
This Week in Portland
Tuesday looks like the warmest upcoming period in Portland at 61 degrees F.
Thursday Night is the coolest period ahead with temperatures near 28 degrees F.
The strongest winds are forecast for Sunday at about 10 to 15 mph W.
Precipitation is mentioned in 1 upcoming forecast period.
Forecast Details
- Last updated
- Nov 8, 2026 3:19 AM CST
- Coverage
- 7 days
- Time zone
- America/Chicago
- Forecast office
- DVN
- Radar station
- KDVN
Weather data is provided by the National Weather Service and refreshed automatically for U.S. locations.
Open NOAA sourceExtended Forecast
Sunny. High near 60, with temperatures falling to around 53 in the afternoon. West wind 10 to 15 mph.
Mostly clear. Low around 34, with temperatures rising to around 36 overnight. Northwest wind 0 to 5 mph.
Mostly sunny, with a high near 60. Southwest wind 0 to 10 mph.
Mostly clear, with a low around 42.
Sunny, with a high near 61.
Partly cloudy, with a low around 39.
A slight chance of rain showers before noon. Partly sunny, with a high near 54.
Partly cloudy, with a low around 36.
Partly sunny, with a high near 47.
Mostly clear, with a low around 28.
Sunny, with a high near 46.
Mostly clear, with a low around 30.
Sunny, with a high near 52.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Overnight
Nov 8
|
Partly Cloudy
|
36°F |
5 to 10 mph
SW
|
|
Sunday
Nov 8
|
Sunny
|
60°F |
10 to 15 mph
W
|
|
Sunday Night
Nov 8
|
Mostly Clear
|
34°F |
0 to 5 mph
NW
|
|
Monday
Nov 9
|
Mostly Sunny
|
60°F |
0 to 10 mph
SW
|
|
Monday Night
Nov 9
|
Mostly Clear
|
42°F |
5 mph
W
|
|
Tuesday
Nov 10
|
Sunny
|
61°F |
0 to 5 mph
NW
|
|
Tuesday Night
Nov 10
|
Partly Cloudy
|
39°F |
0 mph
|
|
Veterans Day
Nov 11
|
Slight Chance Rain Showers then Partly Sunny
|
54°F |
0 to 5 mph
N
|
|
Wednesday Night
Nov 11
|
Partly Cloudy
|
36°F |
5 to 10 mph
N
|
|
Thursday
Nov 12
|
Partly Sunny
|
47°F |
10 to 15 mph
N
|
|
Thursday Night
Nov 12
|
Mostly Clear
|
28°F |
5 to 10 mph
N
|
|
Friday
Nov 13
|
Sunny
|
46°F |
5 mph
N
|
|
Friday Night
Nov 13
|
Mostly Clear
|
30°F |
0 to 5 mph
NW
|
|
Saturday
Nov 14
|
Sunny
|
52°F |
5 mph
W
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Portland.