Griggsville, IL Weather Forecast
Local 7-day forecast
Showers And Thunderstorms Likely
Track current conditions, temperature changes, wind, and the full daily outlook for Griggsville, IL in one place.
Showers and thunderstorms likely before 4pm, then a slight chance of showers and thunderstorms. Mostly cloudy, with a high near 75. Southwest wind around 10 mph. Chance of precipitation is 60%.
Local Weather Overview
This forecast page for Griggsville, 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: Oct 15, 2026 3:41 PM CDT.
The active forecast window currently covers Oct 15 to Oct 21, 2026 for Griggsville, IL.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Oct 15 to Oct 21, 2026
- Latest sync
- Oct 15, 2026 3:41 PM CDT
- Forecast office
- LSX
- Source
- NOAA / NWS
Daily Outlook
This Week in Griggsville
Wednesday looks like the warmest upcoming period in Griggsville at 78 degrees F.
Friday Night is the coolest period ahead with temperatures near 35 degrees F.
The strongest winds are forecast for Friday at about 16 to 21 mph NW.
Precipitation is mentioned in 3 upcoming forecast periods.
Forecast Details
- Last updated
- Oct 15, 2026 3:41 PM CDT
- Coverage
- 7 days
- Time zone
- America/Chicago
- Forecast office
- LSX
- Radar station
- KLSX
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 11pm. Mostly cloudy, with a low around 45. Northwest wind 12 to 18 mph, with gusts as high as 31 mph. Chance of precipitation is 60%.
A chance of rain showers between noon and 4pm. Partly sunny, with a high near 55. Northwest wind 16 to 21 mph, with gusts as high as 33 mph. Chance of precipitation is 40%.
Mostly cloudy, with a low around 35. North wind 3 to 18 mph, with gusts as high as 29 mph.
Sunny, with a high near 59. North wind 0 to 3 mph.
Clear, with a low around 36.
Sunny, with a high near 67.
Mostly clear, with a low around 40.
Mostly sunny, with a high near 71.
Partly cloudy, with a low around 44.
Mostly sunny, with a high near 75.
Mostly clear, with a low around 48.
Sunny, with a high near 78.
Mostly clear, with a low around 51.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
This Afternoon
Oct 15
|
Showers And Thunderstorms Likely
|
75°F |
10 mph
SW
|
|
Tonight
Oct 15
|
Showers And Thunderstorms Likely then Mostly Cloudy
|
45°F |
12 to 18 mph
NW
|
|
Friday
Oct 16
|
Partly Sunny then Chance Rain Showers
|
55°F |
16 to 21 mph
NW
|
|
Friday Night
Oct 16
|
Mostly Cloudy
|
35°F |
3 to 18 mph
N
|
|
Saturday
Oct 17
|
Sunny
|
59°F |
0 to 3 mph
N
|
|
Saturday Night
Oct 17
|
Clear
|
36°F |
0 to 3 mph
S
|
|
Sunday
Oct 18
|
Sunny
|
67°F |
5 to 8 mph
S
|
|
Sunday Night
Oct 18
|
Mostly Clear
|
40°F |
5 mph
S
|
|
Monday
Oct 19
|
Mostly Sunny
|
71°F |
5 mph
S
|
|
Monday Night
Oct 19
|
Partly Cloudy
|
44°F |
2 mph
SE
|
|
Tuesday
Oct 20
|
Mostly Sunny
|
75°F |
2 mph
SE
|
|
Tuesday Night
Oct 20
|
Mostly Clear
|
48°F |
1 mph
SE
|
|
Wednesday
Oct 21
|
Sunny
|
78°F |
1 to 5 mph
SE
|
|
Wednesday Night
Oct 21
|
Mostly Clear
|
51°F |
3 mph
SE
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Griggsville.
