Weather forecast for tomorrowCastalia, IA
Weather forecast for tomorrow
Monday Oct 19, 2026
- 66°F
- 39°F
Partly Cloudy
- Precip. probability: 8%
- Precipitation: 0"
- Wind: 5mphS 186°
- Humidity: 66%
- UV index: 4
- Sunrise: 7:25 am CDT
- Sunset: 6:17 pm CDT
- details ▼
On Monday, October 19, sunlight and clouds will take turns dominating the sky.
Significant variations in temperature are anticipated, peaking at a breezy 66.2°F and dropping to a low of a cold 39.2°F.
This October day will feature warmer weather, consistent with September's average of 71.1°F.
Sunrise will be at 7:25 am and sunset at 6:17 pm; tomorrow's daylight will last for 10h and 52min.
Significant variations in temperature are anticipated, peaking at a breezy 66.2°F and dropping to a low of a cold 39.2°F.
This October day will feature warmer weather, consistent with September's average of 71.1°F.
Sunrise will be at 7:25 am and sunset at 6:17 pm; tomorrow's daylight will last for 10h and 52min.
Hourly overview
Hourly temperatures
Warmest hour: 3 pm 64°C.
Coldest hour: 6 am 41°C.
Coldest hour: 6 am 41°C.
Chance of precipitation
Highest chance: 6 am 8%.
Hourly weather forecast
- 12 am
- 48°F
- Feels like:46°F
Clear
- Precip. probability: 6%
- Precipitation: 0"
- Wind: 6mphSSW 211°
- Humidity: 78%
- Pressure: 30.3"Hg
- Visibility: 10mi
- UV index: 0
- details ▼
- 2 am
- 45°F
- Feels like:43°F
Clear
- Precip. probability: 7%
- Precipitation: 0"
- Wind: 4mphSSW 206°
- Humidity: 87%
- Pressure: 30.3"Hg
- Visibility: 10mi
- UV index: 0
- details ▼
- 4 am
- 43°F
- Feels like:39°F
Clear
- Precip. probability: 8%
- Precipitation: 0"
- Wind: 4mphSSW 198°
- Humidity: 95%
- Pressure: 30.3"Hg
- Visibility: 10mi
- UV index: 0
- details ▼
- 6 am
- 41°F
- Feels like:39°F
Clear
- Precip. probability: 8%
- Precipitation: 0"
- Wind: 3mphS 187°
- Humidity: 97%
- Pressure: 30.33"Hg
- Visibility: 9mi
- UV index: 0
- details ▼
Sunrise: 7:25 am
- 8 am
- 43°F
- Feels like:43°F
Mostly Sunny
- Precip. probability: 8%
- Precipitation: 0"
- Wind: 3mphS 186°
- Humidity: 97%
- Pressure: 30.33"Hg
- Visibility: 9mi
- UV index: 0
- details ▼
- 10 am
- 52°F
- Feels like:52°F
Mostly Sunny
- Precip. probability: 4%
- Precipitation: 0"
- Wind: 4mphSSW 196°
- Humidity: 77%
- Pressure: 30.36"Hg
- Visibility: 10mi
- UV index: 1
- details ▼
- 12 pm
- 61°F
- Feels like:61°F
Partly Cloudy
- Precip. probability: 1%
- Precipitation: 0"
- Wind: 4mphSSW 196°
- Humidity: 57%
- Pressure: 30.33"Hg
- Visibility: 10mi
- UV index: 3
- details ▼
- 2 pm
- 64°F
- Feels like:64°F
Partly Cloudy
- Precip. probability: 0%
- Precipitation: 0"
- Wind: 4mphSSW 195°
- Humidity: 51%
- Pressure: 30.3"Hg
- Visibility: 10mi
- UV index: 3
- details ▼
- 4 pm
- 64°F
- Feels like:64°F
Partly Cloudy
- Precip. probability: 0%
- Precipitation: 0"
- Wind: 4mphS 178°
- Humidity: 47%
- Pressure: 30.3"Hg
- Visibility: 10mi
- UV index: 1
- details ▼
- 6 pm
- 59°F
- Feels like:59°F
Partly Cloudy
- Precip. probability: 2%
- Precipitation: 0"
- Wind: 2mphSSE 156°
- Humidity: 58%
- Pressure: 30.3"Hg
- Visibility: 10mi
- UV index: 0
- details ▼
Sunset: 6:17 pm
- 8 pm
- 52°F
- Feels like:52°F
Mostly Clear
- Precip. probability: 4%
- Precipitation: 0"
- Wind: 2mphSE 137°
- Humidity: 77%
- Pressure: 30.3"Hg
- Visibility: 10mi
- UV index: 0
- details ▼
- 10 pm
- 48°F
- Feels like:48°F
Clear
- Precip. probability: 5%
- Precipitation: 0"
- Wind: 2mphSE 128°
- Humidity: 86%
- Pressure: 30.33"Hg
- Visibility: 10mi
- UV index: 0
- details ▼
Tomorrow, on Monday, a combination of dry and sunny and dull weather is anticipated.
The temperature will be between the lowest temperature of 41°F and the highest temperature of 64.4°F. The warmest part of the day will be from 2 pm to 4 pm.
The temperature will feel more resembling September's average high than the expected maximum for October. The night temperature will be close to the standard October low of 41.4°F.
The temperature will be between the lowest temperature of 41°F and the highest temperature of 64.4°F. The warmest part of the day will be from 2 pm to 4 pm.
The temperature will feel more resembling September's average high than the expected maximum for October. The night temperature will be close to the standard October low of 41.4°F.
Updated: Oct 18, 2026 @ 08:40:50 UTC
Published by: Weather U.S. | About Us
Data Sources | weather.com | Weather
Weather Forecasting & Climate
Published by: Weather U.S. | About Us
Data Sources | weather.com | Weather
Weather Forecasting & Climate
Frequently asked questions
Tomorrow, in Castalia, moderate cloud cover will mix with sunshine throughout the day.
Tomorrow, the maximum temperature will be 66.2°F, while the minimum temperature will be 39.2°F.
The highest temperature will be notably higher than the average maximum of 57°F in October. The lowest temperature will be in line with the average low of 41.4°F.
The highest temperature will be notably higher than the average maximum of 57°F in October. The lowest temperature will be in line with the average low of 41.4°F.
On Monday, in Castalia, sunrise will be at 7:25 am and sunset at 6:17 pm (CDT).
Tomorrow, the daylight will last for 10h and 52min.
