Weather forecast for todayCastalia, IA

Weather forecast for today

Current condition 6:22 am CDT

  • 45°F
  • Feels like:
    43°F
Clear
Clear
  • Precipitation: 0"
  • Wind: 5mphSSE 150°
  • Humidity: 89%
  • Dewpoint: 43°F
  • Pressure: 30.25"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
In Castalia, at the moment, the sky is a wide-open expanse of clear blue.
The temperature is a chilly 44.6°F, with the feels-like temperature closely matching at 42.8°F. The current temperature is near the lowest predicted 46.4°F for today.

Wednesday Oct 21, 2026

  • 72°F
  • 46°F
Sunny
Sunny
  • Precip. probability: 4%
  • Precipitation: 0"
  • Wind: 5mphSSW 204°
  • Humidity: 67%
  • UV index: 3
  • Sunrise: 7:27 am CDT
  • Sunset: 6:14 pm CDT
  • ▼
Today, on Wednesday, October 21, expect consistent sunshine and open skies.
Temperature fluctuations between a delightful 71.6°F and a brisk 46.4°F are expected.
Meteorological data shows 71.6°F is more characteristic of September's climate profile than October's.
Sunrise will be at 7:27 am and sunset at 6:14 pm; the daylight will last for 10h and 47min.

Hourly overview

Hourly temperatures

Warmest hour: 3 pm 72°C.
Coldest hour: 7 am 45°C.

Chance of precipitation

Highest chance: 11 pm 7%.

Hourly weather forecast

  • 7 am
  • 45°F
  • Feels like:
    43°F
Clear
Clear
  • Precip. probability: 2%
  • Precipitation: 0"
  • Wind: 5mphS 178°
  • Humidity: 90%
  • Pressure: 30.24"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
Sunrise: 7:27 am
  • 8 am
  • 46°F
  • Feels like:
    45°F
Sunny
Sunny
  • Precip. probability: 3%
  • Precipitation: 0"
  • Wind: 4mphS 182°
  • Humidity: 92%
  • Pressure: 30.24"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 9 am
  • 50°F
  • Feels like:
    48°F
Sunny
Sunny
  • Precip. probability: 2%
  • Precipitation: 0"
  • Wind: 4mphSSW 194°
  • Humidity: 86%
  • Pressure: 30.24"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 10 am
  • 55°F
  • Feels like:
    55°F
Sunny
Sunny
  • Precip. probability: 2%
  • Precipitation: 0"
  • Wind: 4mphSSW 204°
  • Humidity: 77%
  • Pressure: 30.24"Hg
  • Visibility: 10mi
  • UV index: 1
  • ▼
  • 11 am
  • 61°F
  • Feels like:
    61°F
Mostly Sunny
Mostly Sunny
  • Precip. probability: 1%
  • Precipitation: 0"
  • Wind: 4mphSSW 209°
  • Humidity: 67%
  • Pressure: 30.21"Hg
  • Visibility: 10mi
  • UV index: 2
  • ▼
  • 12 pm
  • 64°F
  • Feels like:
    64°F
Mostly Sunny
Mostly Sunny
  • Precip. probability: 1%
  • Precipitation: 0"
  • Wind: 4mphSSW 208°
  • Humidity: 57%
  • Pressure: 30.21"Hg
  • Visibility: 10mi
  • UV index: 3
  • ▼
  • 1 pm
  • 68°F
  • Feels like:
    68°F
Mostly Sunny
Mostly Sunny
  • Precip. probability: 1%
  • Precipitation: 0"
  • Wind: 4mphSSW 207°
  • Humidity: 52%
  • Pressure: 30.18"Hg
  • Visibility: 10mi
  • UV index: 3
  • ▼
  • 2 pm
  • 70°F
  • Feels like:
    70°F
Sunny
Sunny
  • Precip. probability: 1%
  • Precipitation: 0"
  • Wind: 4mphSW 216°
  • Humidity: 51%
  • Pressure: 30.18"Hg
  • Visibility: 10mi
  • UV index: 3
  • ▼
  • 3 pm
  • 72°F
  • Feels like:
    72°F
Sunny
Sunny
  • Precip. probability: 1%
  • Precipitation: 0"
  • Wind: 5mphSSW 212°
  • Humidity: 48%
  • Pressure: 30.15"Hg
  • Visibility: 10mi
  • UV index: 2
  • ▼
  • 4 pm
  • 70°F
  • Feels like:
    70°F
Sunny
Sunny
  • Precip. probability: 1%
  • Precipitation: 0"
  • Wind: 4mphSSW 208°
  • Humidity: 48%
  • Pressure: 30.15"Hg
  • Visibility: 10mi
  • UV index: 1
  • ▼
  • 5 pm
  • 70°F
  • Feels like:
    70°F
Sunny
Sunny
  • Precip. probability: 2%
  • Precipitation: 0"
  • Wind: 3mphSSW 212°
  • Humidity: 51%
  • Pressure: 30.15"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 6 pm
  • 66°F
  • Feels like:
    66°F
Sunny
Sunny
  • Precip. probability: 4%
  • Precipitation: 0"
  • Wind: 2mphSSW 206°
  • Humidity: 58%
  • Pressure: 30.15"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
Sunset: 6:14 pm
  • 7 pm
  • 63°F
  • Feels like:
    63°F
Mostly Clear
Mostly Clear
  • Precip. probability: 5%
  • Precipitation: 0"
  • Wind: 2mphS 185°
  • Humidity: 66%
  • Pressure: 30.18"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 8 pm
  • 59°F
  • Feels like:
    59°F
Clear
Clear
  • Precip. probability: 6%
  • Precipitation: 0"
  • Wind: 1mphS 185°
  • Humidity: 76%
  • Pressure: 30.18"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 9 pm
  • 57°F
  • Feels like:
    57°F
Clear
Clear
  • Precip. probability: 6%
  • Precipitation: 0"
  • Wind: 1mphS 176°
  • Humidity: 81%
  • Pressure: 30.18"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 10 pm
  • 55°F
  • Feels like:
    55°F
Clear
Clear
  • Precip. probability: 7%
  • Precipitation: 0"
  • Wind: 1mphS 174°
  • Humidity: 86%
  • Pressure: 30.21"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 11 pm
  • 54°F
  • Feels like:
    54°F
Clear
Clear
  • Precip. probability: 7%
  • Precipitation: 0"
  • Wind: 1mphSSW 197°
  • Humidity: 90%
  • Pressure: 30.21"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
Today, mostly cloudless and sunny weather is anticipated.
The temperature will vary between the highest temperature of 71.6°F and the lowest temperature of 44.6°F. The warmest part of the day will be around 3 pm.
The maximum temperature will align more closely with September's average high of 71.1°F than with October's 57°F. The lowest temperature is expected to be a couple of degrees higher than the average minimum in October, typically 41.4°F.
Updated: Oct 21, 2026 @ 11:22:31 UTC
Published by: Weather Atlas | About Us
Data Sources | weather.com | Weather
Weather Forecasting & Climate

Frequently asked questions

Currently (6:22 am CDT) it is 44.6°F in Castalia.

On Wednesday, sunshine is expected with little to no cloud cover.

Today, the maximum temperature will be 71.6°F, while the minimum temperature will be 46.4°F.
The maximum temperature will be notably higher than the average highest temperature of 57°F in October. The lowest temperature will be relatively higher than the average low of 41.4°F.

On Wednesday, in Castalia, sunrise will be at 7:27 am and sunset at 6:14 pm (CDT).

In Castalia, today, there will be 10h and 47min of daylight.