Saint Charles, IA Weather Forecast
Local 7-day forecast
Rain Showers Likely
Track current conditions, temperature changes, wind, and the full daily outlook for Saint Charles, IA in one place.
Rain showers likely. Mostly cloudy, with a high near 69. North northeast wind around 10 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch possible.
Local Weather Overview
This forecast page for Saint Charles, IA 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 12, 2026 9:34 AM CDT.
The active forecast window currently covers Oct 14 to Oct 18, 2026 for Saint Charles, IA.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Oct 14 to Oct 18, 2026
- Latest sync
- Oct 12, 2026 9:34 AM CDT
- Forecast office
- DMX
- Source
- NOAA / NWS
Daily Outlook
This Week in Saint Charles
Wednesday looks like the warmest upcoming period in Saint Charles at 69 degrees F.
Friday Night is the coolest period ahead with temperatures near 37 degrees F.
The strongest winds are forecast for Friday at about 14 to 22 mph NNW.
Precipitation is mentioned in 4 upcoming forecast periods.
Forecast Details
- Last updated
- Oct 12, 2026 9:34 AM CDT
- Coverage
- 5 days
- Time zone
- America/Chicago
- Forecast office
- DMX
- Radar station
- KDMX
Weather data is provided by the National Weather Service and refreshed automatically for U.S. locations.
Open NOAA sourceExtended Forecast
A slight chance of rain showers before 7pm, then a slight chance of showers and thunderstorms between 7pm and 1am, then showers and thunderstorms likely. Cloudy, with a low around 57. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch possible.
Showers and thunderstorms. Mostly cloudy, with a high near 68. Chance of precipitation is 80%.
A chance of showers and thunderstorms before 7pm. Mostly cloudy, with a low around 47. Chance of precipitation is 40%.
Mostly sunny, with a high near 58.
Mostly clear, with a low around 37.
Sunny, with a high near 59.
Mostly clear, with a low around 42.
Sunny, with a high near 67.
Partly cloudy, with a low around 49.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Wednesday
Oct 14
|
Rain Showers Likely
|
69°F |
10 mph
NNE
|
|
Wednesday Night
Oct 14
|
Slight Chance Showers And Thunderstorms
|
57°F |
8 mph
ENE
|
|
Thursday
Oct 15
|
Showers And Thunderstorms
|
68°F |
8 to 12 mph
NE
|
|
Thursday Night
Oct 15
|
Chance Showers And Thunderstorms then Mostly Cloudy
|
47°F |
13 to 18 mph
NNW
|
|
Friday
Oct 16
|
Mostly Sunny
|
58°F |
14 to 22 mph
NNW
|
|
Friday Night
Oct 16
|
Mostly Clear
|
37°F |
2 to 10 mph
NNW
|
|
Saturday
Oct 17
|
Sunny
|
59°F |
2 to 9 mph
SSW
|
|
Saturday Night
Oct 17
|
Mostly Clear
|
42°F |
8 to 13 mph
S
|
|
Sunday
Oct 18
|
Sunny
|
67°F |
15 mph
SSW
|
|
Sunday Night
Oct 18
|
Partly Cloudy
|
49°F |
8 to 12 mph
SSW
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Saint Charles.