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Castalia, IA 52133 Weather

It is 57°F and clear in Castalia, IA 52133, observed at 12:35 PM CDT. Today: Sunny, high 62°F, low 38°F. Hourly and 7-day forecast from the National Weather Service. Times are local (CDT).

Castalia, IA 52133 current weather

57°F

Clear

H 62° / L 38°Feels like 57°

  • No rain expected in the next 12 hours

Observed at Decorah (12.5 mi away), 10/29/2026, 12:35 PM CDT

Hourly forecast

NWS, updated 10/29/2026, 11:26 AM PT

  1. Now59°
  2. 2 PM60°
  3. 3 PM61°
  4. 4 PM62°
  5. 5 PM59°
  6. 6 PM57°
  7. 7 PM52°
  8. 8 PM49°
  9. 9 PM47°
  10. 10 PM45°
  11. 11 PM44°
  12. 12 AM43°Fri
  13. 1 AM42°
  14. 2 AM41°
  15. 3 AM40°
  16. 4 AM40°
  17. 5 AM40°
  18. 6 AM40°
  19. 7 AM40°
  20. 8 AM39°
  21. 9 AM42°
  22. 10 AM46°
  23. 11 AM49°
  24. 12 PM51°10%
  25. 1 PM51°14%
  26. 2 PM54°16%
  27. 3 PM52°19%
  28. 4 PM52°21%
  29. 5 PM52°18%
  30. 6 PM52°15%
  31. 7 PM50°13%
  32. 8 PM48°13%
  33. 9 PM48°13%
  34. 10 PM48°13%
  35. 11 PM48°19%
  36. 12 AM48°25%Sat
  37. 1 AM48°29%
  38. 2 AM48°33%
  39. 3 AM48°45%
  40. 4 AM46°57%
  41. 5 AM48°63%
  42. 6 AM48°74%
  43. 7 AM48°80%
  44. 8 AM48°80%
  45. 9 AM49°80%
  46. 10 AM50°80%
  47. 11 AM52°80%
  48. 12 PM53°80%

7-day forecast

Tap a day for details

  • Today10/29Low 38°High 62°

    This Afternoon: Sunny. High near 62, with temperatures falling to around 59 in the afternoon. Northwest wind 3 to 13 mph.

    Tonight: Mostly clear. Low around 38, with temperatures rising to around 40 overnight. North wind around 2 mph.

    Sunny
  • Fri10/3063% chance of precipitationLow 46°High 54°

    Friday: A slight chance of rain showers after 2pm. Partly sunny. High near 54, with temperatures falling to around 52 in the afternoon. East wind around 5 mph. Chance of precipitation is 20%. New rainfall amounts less than a tenth of an inch possible.

    Friday Night: Rain showers likely. Cloudy, with a low around 46. Southeast wind around 6 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch possible.

    Partly Sunny then Slight Chance Rain Showers
  • Sat10/3180% chance of precipitationLow 48°High 58°

    Saturday: Rain showers. Cloudy, with a high near 58. Southeast wind 3 to 7 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch possible.

    Saturday Night: A chance of rain showers before 7pm. Mostly cloudy, with a low around 48. Southeast wind around 3 mph. Chance of precipitation is 30%. New rainfall amounts less than a tenth of an inch possible.

    Rain Showers
  • Sun11/112% chance of precipitationLow 51°High 65°

    Sunday: Partly sunny, with a high near 65. Southeast wind around 3 mph.

    Sunday Night: Mostly cloudy, with a low around 51. Southeast wind around 3 mph.

    Partly Sunny
  • Mon11/285% chance of precipitationLow 56°High 64°

    Monday: Rain showers likely. Mostly cloudy, with a high near 64. Southeast wind 5 to 14 mph, with gusts as high as 23 mph. Chance of precipitation is 70%.

    Monday Night: Showers and thunderstorms. Cloudy, with a low around 56. Southeast wind around 14 mph, with gusts as high as 23 mph. Chance of precipitation is 90%.

    Rain Showers Likely
  • Tue11/376% chance of precipitationLow 52°High 66°

    Tuesday: Rain showers. Mostly cloudy, with a high near 66. Southeast wind around 13 mph, with gusts as high as 22 mph. Chance of precipitation is 80%.

    Tuesday Night: Rain showers likely. Mostly cloudy, with a low around 52. Southeast wind 7 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 70%.

    Rain Showers
  • Wed11/458% chance of precipitationLow 44°High 61°

    Wednesday: Rain showers likely. Mostly cloudy, with a high near 61. Southwest wind around 9 mph. Chance of precipitation is 60%.

    Wednesday Night: A chance of rain showers. Mostly cloudy, with a low around 44. Northwest wind around 7 mph. Chance of precipitation is 40%.

    Rain Showers Likely

Forecast for 43.109, -91.665 from the NWS ARX office, updated 10/29/2026, 11:26 AM PT · Official forecast on weather.gov

From the National Weather Service; may be delayed. Not for life-safety decisions. In an emergency, call 911.

Next 6 hours

NWS hourly forecast

  1. Now59°Sunny0%13 mph
  2. 2 PM60°Sunny0%10 mph
  3. 3 PM61°Sunny0%7 mph
  4. 4 PM62°Sunny0%5 mph
  5. 5 PM59°Sunny0%3 mph
  6. 6 PM57°Clear0%2 mph

Hourly details

Next 7 days: temperature chart, feels like, rain and snow amounts, sky cover, wind and gustsShow

Radar and satellite

National radar

NEXRAD (up to 24 hours) and GOES

Latest

Frequently asked questions

What is the weather in Castalia, IA 52133 right now?
The latest observation from Decorah was 57°F and clear, reported at 10/29/2026, 12:35 PM CDT.
What is the high temperature today in Castalia, IA 52133?
The National Weather Service forecast for this afternoon calls for a high near 62°F. Sunny.
Will it rain in Castalia, IA 52133 in the next 24 hours?
The NWS hourly forecast does not show any hour with a 50% or higher chance of precipitation in the next 24 hours.
What time is sunrise and sunset in Castalia, IA 52133 today?
Sunrise is about 7:37 AM CDT and sunset is about 6:02 PM CDT (calculated for the center of the area, within a few minutes).
What is the normal October weather in Castalia, IA 52133?
At Postville, the 1991 to 2020 normal high in October is 61°F and the normal low is 37°F.

Rain and snow totals

Next 3 days, NWS forecast grid

Rain (liquid)
0.24 in
Snow
0.00 in
Ice
0.00 in

Nearby hazards

Iowa hazards

Severe storm and flash flood outlooks, expected rain, river flooding and wildfires near this area

  • Severe storm outlook today:No thunderstorm risk area over this locationOutlook map
  • Excessive rainfall outlook (flash flood risk):Could not check the Weather Prediction Center outlook right now.
  • River gauges within 40 miles at or above flood stage: None reported
  • Active wildfires within 50 miles: Toe Fire (0 acres)

UV and air quality forecast

EPA and AirNow

AQI forecast today (Northeast Iowa)
42GoodOzone
AQI forecast tomorrow (Northeast Iowa)
31GoodOzone

UV index guide · Air quality

Drought

By county

Winneshiek County, week of 10/27/2026

No drought or abnormal dryness in this county.

Sun and moon

Local time, center of the area

Sunrise
7:37 AM
Sunset
6:02 PM
Daylight
10 hr 25 min
Moon
Waning Gibbous 86% lit
First light (civil dawn)
7:08 AM
Last light (civil dusk)
6:32 PM
Moonrise
8:23 PM
Moonset
12:01 PM

Normal October weather

Climate

Normal October high 61°, low 37°, precipitation 3.00 in for the month. 1991 to 2020 normals at Postville, 6 mi away.

Other places nearby

Data sources

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About this data

Weather and emergencies: Weather, air quality and hazard information on this page is delayed and may be incomplete. It is not a substitute for official warnings. Always follow the National Weather Service, local emergency management and public safety officials. In an emergency, call 911. For evacuation orders, use your local official alert system.

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