Piatt County, IL Weather Forecast
County weather hub
Showers And Thunderstorms
Compare major city weather across Piatt County, scan the latest forecast snapshots, and jump into local 7-day outlook pages from one hub.
A chance of rain showers before 11am, then showers and thunderstorms. Mostly cloudy, with a high near 75. South southeast wind 9 to 14 mph, with gusts as high as 21 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.
County Weather Overview
This county weather page brings together forecast coverage for Piatt County so visitors can compare temperatures, wind, and conditions across the region without hopping between unrelated pages.
Current forecast coverage spans 4 of 4 mapped cities in Piatt County.
Page Snapshot
- Page focus
- county weather
- Forecast window
- Oct 15 to Oct 21, 2026
- Latest sync
- Oct 15, 2026 11:21 AM CDT
- Forecast office
- ILX
- Source
- NOAA / NWS
Daily Outlook
This Week in Piatt County
Wednesday looks like the warmest upcoming period in Piatt County at 76 degrees F.
Saturday Night is the coolest period ahead with temperatures near 34 degrees F.
The strongest winds are forecast for Friday at about 23 mph NW.
Precipitation is mentioned in 4 upcoming forecast periods.
Forecast Details
- Last updated
- Oct 15, 2026 11:21 AM CDT
- Coverage
- 7 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
Showers and thunderstorms likely before 4am. Mostly cloudy, with a low around 46. West wind 15 to 21 mph, with gusts as high as 28 mph. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.
A chance of rain showers after 4pm. Partly sunny, with a high near 54. Northwest wind around 23 mph, with gusts as high as 32 mph. Chance of precipitation is 40%. New rainfall amounts less than a tenth of an inch possible.
A slight chance of rain showers before 7pm. Partly cloudy, with a low around 36. North northwest wind 12 to 20 mph, with gusts as high as 25 mph. New rainfall amounts less than a tenth of an inch possible.
Areas of frost between 7am and 8am. Sunny, with a high near 58. North northeast wind 3 to 9 mph.
Areas of frost after 2am. Clear, with a low around 34. Southeast wind around 6 mph.
Widespread frost before 8am. Sunny, with a high near 68. South wind 6 to 10 mph.
Mostly clear, with a low around 37.
Sunny, with a high near 73.
Partly cloudy, with a low around 41.
Mostly sunny, with a high near 74.
Mostly clear, with a low around 43.
Sunny, with a high near 76.
Mostly clear, with a low around 47.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Today
Oct 15
|
Showers And Thunderstorms
|
75°F |
9 to 14 mph
SSE
|
|
Tonight
Oct 15
|
Showers And Thunderstorms Likely
|
46°F |
15 to 21 mph
W
|
|
Friday
Oct 16
|
Partly Sunny then Chance Rain Showers
|
54°F |
23 mph
NW
|
|
Friday Night
Oct 16
|
Slight Chance Rain Showers then Partly Cloudy
|
36°F |
12 to 20 mph
NNW
|
|
Saturday
Oct 17
|
Areas Of Frost then Sunny
|
58°F |
3 to 9 mph
NNE
|
|
Saturday Night
Oct 17
|
Clear then Areas Of Frost
|
34°F |
6 mph
SE
|
|
Sunday
Oct 18
|
Widespread Frost then Sunny
|
68°F |
6 to 10 mph
S
|
|
Sunday Night
Oct 18
|
Mostly Clear
|
37°F |
7 mph
S
|
|
Monday
Oct 19
|
Sunny
|
73°F |
6 mph
S
|
|
Monday Night
Oct 19
|
Partly Cloudy
|
41°F |
5 mph
SE
|
|
Tuesday
Oct 20
|
Mostly Sunny
|
74°F |
3 mph
SE
|
|
Tuesday Night
Oct 20
|
Mostly Clear
|
43°F |
5 mph
ESE
|
|
Wednesday
Oct 21
|
Sunny
|
76°F |
6 mph
SE
|
|
Wednesday Night
Oct 21
|
Mostly Clear
|
47°F |
6 mph
SSE
|
Major City Forecasts
Live forecast snapshots for major cities across Piatt County.
Coverage
Forecast coverage currently spans 4 of 4 mapped cities in Piatt County.
Largest mapped city population in this region: 5,557.
