Weather forecast for todayAlton, MO

Weather forecast for today

Current condition 4:23 am CDT

  • 45°F
  • Feels like:
    45°F
Clear
Clear
  • Precipitation: 0"
  • Wind: 2mphNNW 340°
  • Humidity: 99%
  • Dewpoint: 43°F
  • Pressure: 30.32"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
In Alton, currently, the weather remains clear and calm throughout the day.
The temperature is a chilly 44.6°F. The current temperature is almost at the minimum-expected 46.4°F for today.

Tuesday Oct 20, 2026

  • 73°F
  • 46°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 2%
  • Precipitation: 0"
  • Wind: 4mphE 86°
  • Humidity: 59%
  • UV index: 5
  • Sunrise: 7:17 am CDT
  • Sunset: 6:22 pm CDT
  • ▼
Today, on Tuesday, October 20, sun and clouds will share the sky, creating a partly cloudy day.
The peak daytime temperature will touch a temperate 73.4°F, while the nighttime temperature will descend to a frosty 46.4°F.
The temperature is anticipated to be slightly warmer than the standard October peak of 69.1°F.
Sunrise will be at 7:17 am and sunset at 6:22 pm; the daylight will last for 11h and 5min.

Hourly overview

Hourly temperatures

Warmest hour: 3 pm 73°C.
Coldest period: 5 am - 7 am 43°C.

Chance of precipitation

Highest chance: 9 pm - 11 pm 15%.

Hourly weather forecast

  • 6 am
  • 43°F
  • Feels like:
    43°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 2%
  • Precipitation: 0"
  • Wind: 2mphNNE 21°
  • Humidity: 97%
  • Pressure: 30.33"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
Sunrise: 7:17 am
  • 8 am
  • 46°F
  • Feels like:
    46°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 2%
  • Precipitation: 0"
  • Wind: 2mphNNE 18°
  • Humidity: 89%
  • Pressure: 30.36"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 10 am
  • 59°F
  • Feels like:
    59°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 1%
  • Precipitation: 0"
  • Wind: 3mphENE 73°
  • Humidity: 61%
  • Pressure: 30.36"Hg
  • Visibility: 10mi
  • UV index: 2
  • ▼
  • 12 pm
  • 68°F
  • Feels like:
    68°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 4mphSE 131°
  • Humidity: 36%
  • Pressure: 30.33"Hg
  • Visibility: 10mi
  • UV index: 5
  • ▼
  • 2 pm
  • 72°F
  • Feels like:
    72°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 3mphSE 133°
  • Humidity: 31%
  • Pressure: 30.27"Hg
  • Visibility: 10mi
  • UV index: 4
  • ▼
  • 4 pm
  • 72°F
  • Feels like:
    72°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 3mphSE 129°
  • Humidity: 32%
  • Pressure: 30.24"Hg
  • Visibility: 10mi
  • UV index: 1
  • ▼
  • 6 pm
  • 68°F
  • Feels like:
    68°F
Mostly Cloudy
Mostly Cloudy
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 4mphESE 111°
  • Humidity: 40%
  • Pressure: 30.24"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
Sunset: 6:22 pm
  • 8 pm
  • 59°F
  • Feels like:
    59°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 1%
  • Precipitation: 0"
  • Wind: 1mphENE 73°
  • Humidity: 57%
  • Pressure: 30.24"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 10 pm
  • 54°F
  • Feels like:
    54°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 15%
  • Precipitation: 0"
  • Wind: 1mphNNE 32°
  • Humidity: 70%
  • Pressure: 30.24"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
Today, in Alton, cloudy skies are expected.
The temperature will be between the lowest temperature of 42.8°F and the highest temperature of 73.4°F. The warmest part of the day is anticipated around 3 pm.
The temperature is expected to be a couple of degrees higher than the average peak in October, which is 69.1°F. The lowest temperature is also resembling October's typical minimum of 49.8°F.
Updated: Oct 20, 2026 @ 09:23:49 UTC
Published by: Weather Atlas | About Us
Data Sources | weather.com | Weather
Weather Forecasting & Climate

Frequently asked questions

The current temperature (4:23 am CDT) is 44.6°F.

Today, in Alton, variable cloud cover will persist, but sunshine will break through.

Today, the highest temperature will be 73.4°F, while the lowest temperature will be 46.4°F.
The highest temperature will be a couple of degrees higher than the average maximum of 69.1°F in October. The lowest temperature will be in line with the average low of 49.8°F.

On Tuesday, in Alton, sunrise will be at 7:17 am and sunset at 6:22 pm (CDT).

Today in Alton, the daylight will last for 11h and 5min.