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

Today's forecast for Williamstown shows a low of 33 degrees Fahrenheit. Widespread frost after 1am.

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

The 7-day forecast for Williamstown shows highs from 57 to 61 degrees and lows from 32 to 47 degrees Fahrenheit. Expect precipitation on 4 days with chances of 20% or higher.

Will it rain in Williamstown, IA this week?

Yes, rain is possible in Williamstown this week. Precipitation chances: Sunday (25% chance), Monday (50% chance), Tuesday (48% chance), Wednesday (29% chance).

How accurate is the Williamstown weather forecast?

WeatherForYou provides highly accurate Williamstown 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.

Williamstown, IA Weather Forecast and Current Conditions

WEATHER ALERTS - Freeze Warning

Current Conditions From Nearby Station

46°F
Feels Like 46°F

Humidity 53% Dew Point 30°F Wind Calm 0 MPH Gusts 2 Barometer 29.22 in.742.2 mm

Solar Rad 0 w/m2

Report from a MADIS/MESONET station 6.2 miles ESE of central Williamstown
at 7:32 PM Wed, Oct 22, 2025

WEATHER ALERTS - Freeze Warning

Current Conditions From Nearby Station

46°F
Feels Like 46°F

Humidity 53% Dew Point 30°F Wind Calm 0 MPH Gusts 2 Barometer 29.22 in.742.2 mm

Solar Rad 0 w/m2

Report from a MADIS/MESONET station 6.2 miles ESE of central Williamstown
at 7:32 PM Wed, Oct 22, 2025

Point Forecast at a Glance

WedOct 22

33°

ThuOct 23

58°

32°

FriOct 24

59°

40°

SatOct 25

60°

46°

SunOct 26

20%

61°

47°

MonOct 27

30%

60°

47°

TueOct 28

50%

59°

42°

7-Day Temperature Trend

Week Ahead Summary

High temperatures remain relatively stable through the week, ranging from 57°F to 61°F. Unsettled weather expected with rain likely on at least 4 days.

Climate Context

This week's forecast shows temperatures running 4°F below the historical average for October. Normal highs for this period are around 63°F with lows around 40°F.

This Date in Weather History

1965 - The temperature soared to 104 degrees at San Diego, CA. Southern California was in the midst of a late October heat wave that year. Los Angeles had ten consecutive days with afternoon highs reaching 100 degrees.

Williamstown 7 Day Weather Forecast Details

Wednesday Oct 22

Night: Widespread frost after 1am. Clear, with a low around 33. Northwest wind 5 to 10 mph.

Thursday Oct 23

Day: Widespread frost before 9am. Sunny. High near 58, with temperatures falling to around 56 in the afternoon. Northwest wind 5 to 10 mph.

Night: Widespread frost after 1am. Clear, with a low around 32. North wind 0 to 5 mph.

Friday Oct 24

Day: Widespread frost before 9am. Sunny, with a high near 59. East wind 0 to 5 mph.

Night: Mostly cloudy, with a low around 40.

Saturday Oct 25

Day: Partly sunny, with a high near 60.

Night: Mostly cloudy, with a low around 46.

Sunday Oct 26

Day: A slight chance of rain showers after 7am. Partly sunny, with a high near 61.

Night: A chance of rain showers. Mostly cloudy, with a low around 47. Chance of precipitation is 30%.

Monday Oct 27

Day: A chance of rain showers before 1pm, then a chance of showers and thunderstorms. Mostly cloudy, with a high near 60. Chance of precipitation is 30%.