What is today's weather forecast for Alton, IA?

Today's forecast for Alton shows a low of 3 degrees Fahrenheit. A chance of flurries after 9am.

What is the 7-day weather forecast for Alton, IA?

The 7-day forecast for Alton shows highs from 6 to 39 degrees and lows from -19 to 24 degrees Fahrenheit. Expect precipitation on 2 days with chances of 20% or higher.

Will it rain in Alton, IA this week?

Yes, rain is possible in Alton this week. Precipitation chances: Friday (90% chance), Saturday (90% chance).

How accurate is the Alton weather forecast?

WeatherForYou provides highly accurate Alton forecasts using National Weather Service data and current conditions from the nearest available weather stations, often miles closer than regional airports, for the most precise local forecasts.

Alton, IA Weather Forecast and Current Conditions

WEATHER ALERTS - Winter Weather Advisory

Current Conditions From Nearby Local Station

Switch to Metric Units

20°F
Feels Like 20°F

Humidity 90% Dew Point 18°F Wind Calm Barometer N/A

Report from a MADIS/MESONET weather station 3.8 mi. W of central Alton
at 7:05 AM Fri, Dec 12, 2025

Point Forecast at a Glance

FriDec 12

SatDec 13

90%

-19

SunDec 14

MonDec 15

TueDec 16

WedDec 17

ThuDec 18

Jump to detailed forecast ↓

7-Day Temperature Trend

Week Ahead Summary

High temperatures climb from 6°F to a high of 39°F by week's end. Some snow possible with at least 2 days showing precipitation chances of 20% or higher.

Climate Context

This week's forecast shows temperatures running 5°F below the historical average for December. Normal highs for this period are around 31°F with lows around 13°F.

This Date in Weather History

1967 - From December 12th through the 20th a series of snowstorms buries Flagstaff, AZ with nearly 85 inches of snow.

Alton, IA 7 Day Weather Forecast Details

Friday Dec 12

Day: A chance of flurries after 9am. Cloudy, with a temperature falling to around 11 by 5pm. Northwest wind 10 to 15 mph, with gusts as high as 20 mph.

Night: Snow, mainly after 3am. The snow could be heavy at times. Low around 3. Northwest wind 5 to 10 mph. Chance of precipitation is 90%. New snow accumulation of around 2 inches.

Saturday Dec 13

Day: Snow before noon. High near 6. North wind 5 to 10 mph. Chance of precipitation is 90%. New snow accumulation of around 2 inches.

Night: Mostly clear, with a low around -19. Wind chill values as low as -26. Northwest wind 5 to 10 mph becoming light after midnight.

Sunday Dec 14

Day: Sunny, with a high near 13. Light and variable wind becoming south 10 to 15 mph in the morning. Winds could gust as high as 20 mph.

Night: Mostly clear, with a low around 3. South wind around 15 mph, with gusts as high as 25 mph.

Monday Dec 15

Day: Mostly sunny, with a high near 30.

Night: Partly cloudy, with a low around 15.

Tuesday Dec 16

Day: Partly sunny, with a high near 36.

Night: Mostly cloudy, with a low around 24.

Wednesday Dec 17

Day: Partly sunny, with a high near 39.

Night: Mostly cloudy, with a low around 19.

Thursday Dec 18

Day: Mostly sunny, with a high near 32.

About Alton, IA

Alton is a city in Sioux County, Iowa, United States, along the Floyd River. The population was 1,248 at the 2020 census.

Content from Wikipedia, licensed under CC BY-SA 3.0.

How We Provide Better Local Weather

Current conditions: We use the nearest available station to your location - including professional MESONET/MADIS and local weather stations - often miles closer than regional airports.

Forecasts: National Weather Service point forecasts predict for your specific area, not broad regional zones, making them far more relevant to your location.

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