Gallatin County, IL Weather Forecast
County weather hub
Chance Showers And Thunderstorms
Compare major city weather across Gallatin County, scan the latest forecast snapshots, and jump into local 7-day outlook pages from one hub.
A chance of showers and thunderstorms between 9am and 2pm, then showers and thunderstorms likely between 2pm and 4pm, then a chance of showers and thunderstorms. Mostly sunny. High near 89, with temperatures falling to around 87 in the afternoon. West wind 0 to 6 mph. Chance of precipitation is 60%.
County Weather Overview
This county weather page brings together forecast coverage for Gallatin County so visitors can compare temperatures, wind, and conditions across the region without hopping between unrelated pages.
Current forecast coverage spans 1 of 1 mapped cities in Gallatin County.
Page Snapshot
- Page focus
- county weather
- Forecast window
- Jul 17 to Jul 22, 2026
- Latest sync
- Jul 16, 2026 2:13 PM CDT
- Forecast office
- PAH
- Source
- NOAA / NWS
Daily Outlook
This Week in Gallatin County
Tuesday looks like the warmest upcoming period in Gallatin County at 92 degrees F.
Wednesday Night is the coolest period ahead with temperatures near 66 degrees F.
The strongest winds are forecast for Tuesday at about 5 to 9 mph WNW.
Precipitation is mentioned in 8 upcoming forecast periods.
Forecast Details
- Last updated
- Jul 16, 2026 2:13 PM CDT
- Coverage
- 6 days
- Time zone
- America/Chicago
- Forecast office
- PAH
- Radar station
- KVWX
Weather data is provided by the National Weather Service and refreshed automatically for U.S. locations.
Open NOAA sourceExtended Forecast
A slight chance of showers and thunderstorms before 7pm. Mostly clear, with a low around 73. Southwest wind around 3 mph. Chance of precipitation is 20%.
A slight chance of rain showers between 7am and 10am, then a chance of showers and thunderstorms. Sunny, with a high near 91. West wind 3 to 8 mph. Chance of precipitation is 50%.
A chance of showers and thunderstorms before 10pm, then a chance of showers and thunderstorms between 10pm and 1am. Partly cloudy, with a low around 73. West wind 2 to 6 mph. Chance of precipitation is 50%.
A chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 90. North northwest wind around 5 mph.
A chance of showers and thunderstorms before 7pm. Mostly clear, with a low around 68. Northeast wind 0 to 3 mph.
Mostly sunny, with a high near 91. Southwest wind 0 to 3 mph.
Partly cloudy, with a low around 73. Southwest wind around 5 mph.
A slight chance of showers and thunderstorms after 7am. Mostly sunny, with a high near 92. West northwest wind 5 to 9 mph.
A slight chance of showers and thunderstorms before 1am. Mostly clear, with a low around 70. North wind around 7 mph.
Mostly sunny, with a high near 86. North northeast wind 5 to 8 mph.
Partly cloudy, with a low around 66. Northeast wind 2 to 7 mph.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Friday
Jul 17
|
Chance Showers And Thunderstorms
|
89°F |
0 to 6 mph
W
|
|
Friday Night
Jul 17
|
Slight Chance Showers And Thunderstorms then Mostly Clear
|
73°F |
3 mph
SW
|
|
Saturday
Jul 18
|
Chance Showers And Thunderstorms
|
91°F |
3 to 8 mph
W
|
|
Saturday Night
Jul 18
|
Chance Showers And Thunderstorms
|
73°F |
2 to 6 mph
W
|
|
Sunday
Jul 19
|
Mostly Sunny then Chance Showers And Thunderstorms
|
90°F |
5 mph
NNW
|
|
Sunday Night
Jul 19
|
Chance Showers And Thunderstorms then Mostly Clear
|
68°F |
0 to 3 mph
NE
|
|
Monday
Jul 20
|
Mostly Sunny
|
91°F |
0 to 3 mph
SW
|
|
Monday Night
Jul 20
|
Partly Cloudy
|
73°F |
5 mph
SW
|
|
Tuesday
Jul 21
|
Slight Chance Showers And Thunderstorms
|
92°F |
5 to 9 mph
WNW
|
|
Tuesday Night
Jul 21
|
Slight Chance Showers And Thunderstorms
|
70°F |
7 mph
N
|
|
Wednesday
Jul 22
|
Mostly Sunny
|
86°F |
5 to 8 mph
NNE
|
|
Wednesday Night
Jul 22
|
Partly Cloudy
|
66°F |
2 to 7 mph
NE
|
Major City Forecasts
Live forecast snapshots for major cities across Gallatin County.
Coverage
Forecast coverage currently spans 1 of 1 mapped cities in Gallatin County.
Largest mapped city population in this region: 1,070.
