Quincy, IL Weather Forecast
Local 7-day forecast
Mostly Sunny
Track current conditions, temperature changes, wind, and the full daily outlook for Quincy, IL in one place.
Mostly sunny, with a high near 90. East wind 2 to 6 mph.
Local Weather Overview
This forecast page for Quincy, 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: Jul 19, 2026 1:07 AM CDT.
The active forecast window currently covers Jul 19 to Jul 25, 2026 for Quincy, IL.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Jul 19 to Jul 25, 2026
- Latest sync
- Jul 19, 2026 1:07 AM CDT
- Forecast office
- LSX
- Source
- NOAA / NWS
Daily Outlook
This Week in Quincy
Monday looks like the warmest upcoming period in Quincy at 94 degrees F.
Wednesday Night is the coolest period ahead with temperatures near 65 degrees F.
The strongest winds are forecast for Tuesday at about 6 to 12 mph W.
Precipitation is mentioned in 8 upcoming forecast periods.
Forecast Details
- Last updated
- Jul 19, 2026 1:07 AM 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
Patchy smoke between midnight and 1am. Mostly clear, with a low around 71. East wind around 6 mph.
A chance of showers and thunderstorms between 11am and noon. Sunny, with a high near 94. Heat index values as high as 103. South wind around 5 mph. Chance of precipitation is 30%.
A chance of showers and thunderstorms between 1am and 4am, then a chance of showers and thunderstorms. Partly cloudy, with a low around 78. Southwest wind around 6 mph. Chance of precipitation is 30%.
A chance of showers and thunderstorms before 7am. Sunny, with a high near 93. Chance of precipitation is 30%.
Mostly clear, with a low around 68.
Sunny, with a high near 86.
Mostly clear, with a low around 65.
A slight chance of rain showers between 7am and 1pm. Mostly sunny, with a high near 85. Chance of precipitation is 20%.
A slight chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 67. Chance of precipitation is 20%.
A chance of showers and thunderstorms before 1pm. Partly sunny, with a high near 87. Chance of precipitation is 30%.
A slight chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 69. Chance of precipitation is 20%.
A slight chance of showers and thunderstorms before 7am. Mostly sunny, with a high near 91. Chance of precipitation is 20%.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Sunday
Jul 19
|
Mostly Sunny
|
90°F |
2 to 6 mph
E
|
|
Sunday Night
Jul 19
|
Mostly Clear then Patchy Smoke
|
71°F |
6 mph
E
|
|
Monday
Jul 20
|
Chance Showers And Thunderstorms then Sunny
|
94°F |
5 mph
S
|
|
Monday Night
Jul 20
|
Partly Cloudy then Chance Showers And Thunderstorms
|
78°F |
6 mph
SW
|
|
Tuesday
Jul 21
|
Chance Showers And Thunderstorms then Sunny
|
93°F |
6 to 12 mph
W
|
|
Tuesday Night
Jul 21
|
Mostly Clear
|
68°F |
5 to 12 mph
N
|
|
Wednesday
Jul 22
|
Sunny
|
86°F |
7 mph
N
|
|
Wednesday Night
Jul 22
|
Mostly Clear
|
65°F |
1 to 5 mph
NE
|
|
Thursday
Jul 23
|
Slight Chance Rain Showers
|
85°F |
5 mph
SE
|
|
Thursday Night
Jul 23
|
Partly Cloudy then Slight Chance Showers And Thunderstorms
|
67°F |
5 mph
SE
|
|
Friday
Jul 24
|
Chance Showers And Thunderstorms
|
87°F |
7 mph
SE
|
|
Friday Night
Jul 24
|
Partly Cloudy then Slight Chance Showers And Thunderstorms
|
69°F |
6 mph
SE
|
|
Saturday
Jul 25
|
Slight Chance Showers And Thunderstorms then Mostly Sunny
|
91°F |
3 to 7 mph
SE
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Quincy.
