Altamont, IL Weather Forecast
Local 7-day forecast
Rain Showers Likely
Track current conditions, temperature changes, wind, and the full daily outlook for Altamont, IL in one place.
Rain showers likely before 1pm, then showers and thunderstorms likely. Mostly cloudy, with a high near 68. West wind 8 to 13 mph, with gusts as high as 21 mph. Chance of precipitation is 60%. New rainfall amounts less than a tenth of an inch possible.
Local Weather Overview
This forecast page for Altamont, 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: Apr 9, 2026 5:12 PM CDT.
The active forecast window currently covers Apr 10 to Apr 15, 2026 for Altamont, IL.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Apr 10 to Apr 15, 2026
- Latest sync
- Apr 9, 2026 5:12 PM CDT
- Forecast office
- ILX
- Source
- NOAA / NWS
Daily Outlook
This Week in Altamont
Tuesday looks like the warmest upcoming period in Altamont at 82 degrees F.
Friday Night is the coolest period ahead with temperatures near 45 degrees F.
The strongest winds are forecast for Sunday at about 9 to 20 mph S.
Precipitation is mentioned in 11 upcoming forecast periods.
Forecast Details
- Last updated
- Apr 9, 2026 5:12 PM CDT
- Coverage
- 6 days
- Time zone
- America/Chicago
- Forecast office
- ILX
- Radar station
- KVWX
Weather data is provided by the National Weather Service and refreshed automatically for U.S. locations.
Open NOAA sourceExtended Forecast
A chance of rain showers. Mostly cloudy, with a low around 45. North northeast wind around 7 mph. Chance of precipitation is 30%. New rainfall amounts less than a tenth of an inch possible.
A slight chance of rain showers. Partly sunny, with a high near 69. East wind around 8 mph.
A slight chance of rain showers before 7pm. Mostly cloudy, with a low around 58. Southeast wind 6 to 9 mph, with gusts as high as 17 mph.
Mostly cloudy, with a high near 77. South wind 9 to 20 mph, with gusts as high as 28 mph.
A chance of rain showers between 7pm and 1am, then showers and thunderstorms likely. Mostly cloudy, with a low around 62. Chance of precipitation is 60%.
Showers and thunderstorms likely before 1pm, then a chance of showers and thunderstorms. Mostly cloudy, with a high near 79. Chance of precipitation is 60%.
A chance of showers and thunderstorms. Mostly cloudy, with a low around 66.
A chance of showers and thunderstorms. Partly sunny, with a high near 82.
A chance of showers and thunderstorms before 1am, then a chance of showers and thunderstorms. Mostly cloudy, with a low around 65.
A chance of showers and thunderstorms. Mostly cloudy, with a high near 79.
A chance of showers and thunderstorms. Mostly cloudy, with a low around 56.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Friday
Apr 10
|
Rain Showers Likely
|
68°F |
8 to 13 mph
W
|
|
Friday Night
Apr 10
|
Chance Rain Showers
|
45°F |
7 mph
NNE
|
|
Saturday
Apr 11
|
Slight Chance Rain Showers
|
69°F |
8 mph
E
|
|
Saturday Night
Apr 11
|
Slight Chance Rain Showers then Mostly Cloudy
|
58°F |
6 to 9 mph
SE
|
|
Sunday
Apr 12
|
Mostly Cloudy
|
77°F |
9 to 20 mph
S
|
|
Sunday Night
Apr 12
|
Showers And Thunderstorms Likely
|
62°F |
16 mph
SSW
|
|
Monday
Apr 13
|
Showers And Thunderstorms Likely
|
79°F |
14 to 17 mph
SSW
|
|
Monday Night
Apr 13
|
Chance Showers And Thunderstorms
|
66°F |
15 mph
SSW
|
|
Tuesday
Apr 14
|
Chance Showers And Thunderstorms
|
82°F |
14 to 18 mph
SSW
|
|
Tuesday Night
Apr 14
|
Chance Showers And Thunderstorms
|
65°F |
15 mph
SSW
|
|
Wednesday
Apr 15
|
Chance Showers And Thunderstorms
|
79°F |
14 to 18 mph
SSW
|
|
Wednesday Night
Apr 15
|
Chance Showers And Thunderstorms
|
56°F |
8 to 13 mph
SW
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Altamont.