What is today's weather forecast for Watertown, IL?

Today's forecast for Watertown shows a low of -2 degrees Fahrenheit. Mostly clear, with a low around -2.

What is the 7-day weather forecast for Watertown, IL?

The 7-day forecast for Watertown shows highs from 13 to 33 degrees and lows from -2 to 19 degrees Fahrenheit. Expect precipitation on 5 days with chances of 20% or higher.

Will it rain in Watertown, IL this week?

Yes, rain is possible in Watertown this week. Precipitation chances: Friday (20% chance), Saturday (40% chance), Monday (50% chance), Tuesday (50% chance), Wednesday (50% chance).

How accurate is the Watertown weather forecast?

WeatherForYou provides highly accurate Watertown 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.

Watertown, IL Weather Forecast and Current Conditions

Current Conditions From Nearby Station

Switch to Metric Units

4°F
Feels Like 4°F

Humidity 86% Dew Point 1°F Wind E 1 MPH Gusts 2 Barometer 30.07 in.

Report from a personal weather station 11.7 mi. ESE of central Watertown
at 3:36 AM Thu, Dec 4, 2025

Point Forecast at a Glance

WedDec 3

-2

ThuDec 4

FriDec 5

SatDec 6

SunDec 7

MonDec 8

TueDec 9

7-Day Temperature Trend

Week Ahead Summary

Significant warming trend with high temperatures climbing from 13°F to 32°F, reaching a high of 32°F. Unsettled weather expected with snow likely on at least 4 days.

Climate Context

This week's forecast shows temperatures running 9°F below the historical average for December. Normal highs for this period are around 34°F with lows around 19°F.

This Date in Weather History

1982 - The temperature in New York City's Central Park reached 72 degrees to establish a record high for December. The month as a whole was also the warmest of record.

Watertown, IL 7 Day Weather Forecast Details

Wednesday Dec 3

Night: Mostly clear, with a low around -2. Wind chill values as low as -10. North northwest wind around 5 mph, with gusts as high as 10 mph.

Thursday Dec 4

Day: Sunny, with a high near 13. Wind chill values as low as -11. North northwest wind around 5 mph becoming calm in the morning.

Night: Mostly clear, with a temperature falling to near -4 by 8pm, then rising to around 4 during the remainder of the night. Wind chill values as low as -16. South wind 5 to 10 mph.

Friday Dec 5

Day: Increasing clouds, with a high near 28. Wind chill values as low as -7. South southwest wind around 10 mph, with gusts as high as 15 mph.

Night: A 20 percent chance of snow before midnight. Mostly cloudy, with a low around 19. South southwest wind 5 to 10 mph becoming west after midnight. Winds could gust as high as 15 mph.

Saturday Dec 6

Day: Partly sunny, with a high near 27.

Night: A 40 percent chance of snow. Mostly cloudy, with a low around 10.

Sunday Dec 7

Day: Mostly sunny, with a high near 20.

Night: Mostly cloudy, with a low around 1.

Monday Dec 8

Day: Partly sunny, with a high near 21.

Night: A chance of snow. Mostly cloudy, with a low around 13.

Tuesday Dec 9

Day: Mostly cloudy, with a high near 32.

Night: A chance of snow. Mostly cloudy, with a low around 19.

Wednesday Dec 10

Day: A chance of snow. Mostly cloudy, with a high near 33.

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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