New Boston, IL Weather Forecast
Local 7-day forecast
Patchy Fog then Mostly Sunny
Track current conditions, temperature changes, wind, and the full daily outlook for New Boston, IL in one place.
Patchy fog before 8am. Mostly sunny, with a high near 90. Heat index values as high as 102. West wind 0 to 5 mph.
Local Weather Overview
This forecast page for New Boston, 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: Jun 8, 2026 9:52 PM CDT.
The active forecast window currently covers Jun 9 to Jun 15, 2026 for New Boston, IL.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Jun 9 to Jun 15, 2026
- Latest sync
- Jun 8, 2026 9:52 PM CDT
- Forecast office
- DVN
- Source
- NOAA / NWS
Daily Outlook
This Week in New Boston
Wednesday looks like the warmest upcoming period in New Boston at 92 degrees F.
Sunday Night is the coolest period ahead with temperatures near 60 degrees F.
The strongest winds are forecast for Wednesday at about 10 to 15 mph S.
Precipitation is mentioned in 10 upcoming forecast periods.
Forecast Details
- Last updated
- Jun 8, 2026 9:52 PM CDT
- Coverage
- 7 days
- Time zone
- America/Chicago
- Forecast office
- DVN
- Radar station
- KDVN
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 between midnight and 1am. Mostly clear. Low around 72, with temperatures rising to around 74 overnight. Heat index values as high as 100. South wind 5 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 20%.
A chance of showers and thunderstorms after 1pm. Sunny, with a high near 92. Heat index values as high as 101. South wind 10 to 15 mph, with gusts as high as 30 mph. Chance of precipitation is 50%.
A chance of showers and thunderstorms before 7pm, then showers and thunderstorms between 7pm and 4am, then a chance of showers and thunderstorms. Partly cloudy, with a low around 69. Chance of precipitation is 80%. New rainfall amounts between a half and three quarters of an inch possible.
A chance of showers and thunderstorms before 7am, then showers and thunderstorms. Mostly sunny, with a high near 86. Chance of precipitation is 80%. New rainfall amounts between three quarters and one inch possible.
Showers and thunderstorms before 7pm, then a chance of showers and thunderstorms between 7pm and 1am. Partly cloudy, with a low around 61. Chance of precipitation is 80%.
Sunny, with a high near 84.
Clear, with a low around 64.
A slight chance of showers and thunderstorms after 7am. Sunny, with a high near 87.
A chance of showers and thunderstorms. Partly cloudy, with a low around 61. Chance of precipitation is 40%.
A chance of showers and thunderstorms. Mostly sunny, with a high near 80. Chance of precipitation is 30%.
A slight chance of showers and thunderstorms. Partly cloudy, with a low around 60.
A slight chance of rain showers before 1pm, then a slight chance of showers and thunderstorms. Mostly sunny, with a high near 78.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Tuesday
Jun 9
|
Patchy Fog then Mostly Sunny
|
90°F |
0 to 5 mph
W
|
|
Tuesday Night
Jun 9
|
Mostly Clear then Slight Chance Showers And Thunderstorms
|
72°F |
5 to 10 mph
S
|
|
Wednesday
Jun 10
|
Sunny then Chance Showers And Thunderstorms
|
92°F |
10 to 15 mph
S
|
|
Wednesday Night
Jun 10
|
Chance Showers And Thunderstorms then Showers And Thunderstorms
|
69°F |
5 to 15 mph
SW
|
|
Thursday
Jun 11
|
Chance Showers And Thunderstorms then Showers And Thunderstorms
|
86°F |
5 to 15 mph
SW
|
|
Thursday Night
Jun 11
|
Showers And Thunderstorms then Chance Showers And Thunderstorms
|
61°F |
5 to 10 mph
W
|
|
Friday
Jun 12
|
Sunny
|
84°F |
5 to 10 mph
W
|
|
Friday Night
Jun 12
|
Clear
|
64°F |
5 mph
SW
|
|
Saturday
Jun 13
|
Slight Chance Showers And Thunderstorms
|
87°F |
5 to 10 mph
W
|
|
Saturday Night
Jun 13
|
Chance Showers And Thunderstorms
|
61°F |
5 to 10 mph
NW
|
|
Sunday
Jun 14
|
Chance Showers And Thunderstorms
|
80°F |
5 to 10 mph
N
|
|
Sunday Night
Jun 14
|
Slight Chance Showers And Thunderstorms
|
60°F |
5 to 10 mph
NE
|
|
Monday
Jun 15
|
Slight Chance Rain Showers then Slight Chance Showers And Thunderstorms
|
78°F |
5 to 10 mph
SW
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around New Boston.