Castalia, IA Weather Forecast
Local 7-day forecast
Sunny
Track current conditions, temperature changes, wind, and the full daily outlook for Castalia, IA in one place.
Sunny, with a high near 80. South wind 6 to 12 mph.
Local Weather Overview
This forecast page for Castalia, 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: Jun 2, 2026 2:42 AM CDT.
The active forecast window currently covers Jun 3 to Jun 8, 2026 for Castalia, IA.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Jun 3 to Jun 8, 2026
- Latest sync
- Jun 2, 2026 2:42 AM CDT
- Forecast office
- ARX
- Source
- NOAA / NWS
Daily Outlook
This Week in Castalia
Monday looks like the warmest upcoming period in Castalia at 86 degrees F.
Wednesday Night is the coolest period ahead with temperatures near 59 degrees F.
The strongest winds are forecast for Thursday at about 9 to 13 mph SW.
Precipitation is mentioned in 8 upcoming forecast periods.
Forecast Details
- Last updated
- Jun 2, 2026 2:42 AM CDT
- Coverage
- 6 days
- Time zone
- America/Chicago
- Forecast office
- ARX
- Radar station
- KARX
Weather data is provided by the National Weather Service and refreshed automatically for U.S. locations.
Open NOAA sourceExtended Forecast
Partly cloudy, with a low around 59. South wind 6 to 10 mph.
Partly sunny, with a high near 82. Southwest wind 9 to 13 mph, with gusts as high as 21 mph.
A chance of showers and thunderstorms after 7pm. Mostly cloudy, with a low around 63. Southwest wind 5 to 10 mph. Chance of precipitation is 50%.
A chance of showers and thunderstorms before 7am, then a chance of showers and thunderstorms between 7am and 1pm, then a chance of showers and thunderstorms. Mostly cloudy, with a high near 84. South wind around 8 mph. Chance of precipitation is 50%.
A chance of showers and thunderstorms before 7pm, then showers and thunderstorms likely between 7pm and 1am, then a chance of showers and thunderstorms. Mostly cloudy, with a low around 64. South wind around 7 mph. Chance of precipitation is 60%.
A chance of showers and thunderstorms before 7am, then a chance of showers and thunderstorms between 7am and 1pm, then a chance of showers and thunderstorms. Partly sunny, with a high near 84. West wind around 8 mph. Chance of precipitation is 50%.
A chance of showers and thunderstorms before 7pm, then a chance of showers and thunderstorms between 7pm and 1am, then a slight chance of showers and thunderstorms. Partly cloudy, with a low around 64. Northeast wind 3 to 8 mph. Chance of precipitation is 30%.
A chance of showers and thunderstorms. Mostly sunny, with a high near 85. Southeast wind 6 to 10 mph. Chance of precipitation is 30%.
A chance of showers and thunderstorms before 7pm, then a chance of showers and thunderstorms between 7pm and 1am, then a slight chance of showers and thunderstorms. Partly cloudy, with a low around 65. Southeast wind around 9 mph. Chance of precipitation is 30%.
A chance of showers and thunderstorms. Mostly sunny, with a high near 86. Southeast wind 7 to 10 mph. Chance of precipitation is 30%.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Wednesday
Jun 3
|
Sunny
|
80°F |
6 to 12 mph
S
|
|
Wednesday Night
Jun 3
|
Partly Cloudy
|
59°F |
6 to 10 mph
S
|
|
Thursday
Jun 4
|
Partly Sunny
|
82°F |
9 to 13 mph
SW
|
|
Thursday Night
Jun 4
|
Chance Showers And Thunderstorms
|
63°F |
5 to 10 mph
SW
|
|
Friday
Jun 5
|
Chance Showers And Thunderstorms
|
84°F |
8 mph
S
|
|
Friday Night
Jun 5
|
Chance Showers And Thunderstorms then Showers And Thunderstorms Likely
|
64°F |
7 mph
S
|
|
Saturday
Jun 6
|
Chance Showers And Thunderstorms
|
84°F |
8 mph
W
|
|
Saturday Night
Jun 6
|
Chance Showers And Thunderstorms
|
64°F |
3 to 8 mph
NE
|
|
Sunday
Jun 7
|
Chance Showers And Thunderstorms
|
85°F |
6 to 10 mph
SE
|
|
Sunday Night
Jun 7
|
Chance Showers And Thunderstorms
|
65°F |
9 mph
SE
|
|
Monday
Jun 8
|
Chance Showers And Thunderstorms
|
86°F |
7 to 10 mph
SE
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Castalia.