What is today's weather forecast for Saint Jacob, IL?

Today's forecast for Saint Jacob shows a high of 37 degrees and a low of 25 degrees Fahrenheit. Sunny, with a high near 37.

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

The 7-day forecast for Saint Jacob shows highs from 37 to 55 degrees and lows from 19 to 34 degrees Fahrenheit. Expect precipitation on 3 days with chances of 20% or higher.

Will it rain in Saint Jacob, IL this week?

Yes, rain is possible in Saint Jacob this week. Precipitation chances: Wednesday (30% chance), Thursday (70% chance), Saturday (20% chance).

How accurate is the Saint Jacob weather forecast?

WeatherForYou provides highly accurate Saint Jacob 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.

Saint Jacob, IL Weather Forecast and Current Conditions

Current Conditions From Nearby Local Station

Switch to Metric Units

21°F
Feels Like 12°F

Humidity 60% Dew Point 9°F Wind SW 7 MPH Gusts 13 Barometer 30.37 in.

Solar Rad 237 w/m²

Report from a MADIS/MESONET weather station 0.8 mi. NNE of central Saint Jacob
at 10:19 AM Mon, Dec 15, 2025

Point Forecast at a Glance

MonDec 15

TueDec 16

WedDec 17

ThuDec 18

70%

FriDec 19

SatDec 20

SunDec 21

Jump to detailed forecast ↓

7-Day Temperature Trend

Week Ahead Summary

Significant warming trend with high temperatures climbing from 37°F to 48°F, reaching a high of 55°F. Some rain possible with at least 3 days showing precipitation chances of 20% or higher.

Climate Context

This week's forecast shows temperatures running 3°F above the historical average for December. Normal highs for this period are around 44°F with lows around 27°F.

This Date in Weather History

1945 - A record December snowstorm buried Buffalo, NY, under 36.6 inches of snow, with unofficial totals south of the city ranging up to 70 inches. Travel was brought to a halt by the storm.

Saint Jacob, IL 7 Day Weather Forecast Details

Monday Dec 15

Day: Sunny, with a high near 37. South wind 7 to 14 mph, with gusts as high as 25 mph.

Night: Mostly clear, with a low around 25. South wind around 7 mph.

Tuesday Dec 16

Day: Sunny, with a high near 49. South wind 7 to 13 mph.

Night: Mostly cloudy, with a low around 33. South wind 5 to 10 mph becoming light southwest after midnight.

Wednesday Dec 17

Day: Mostly sunny, with a high near 51. Calm wind becoming southeast 5 to 9 mph in the morning.

Night: A 30 percent chance of rain after midnight. Mostly cloudy, with a temperature falling to near 42 by 8pm, then rising to around 49 during the remainder of the night.

Thursday Dec 18

Day: Rain likely and possibly a thunderstorm. Partly sunny, with a high near 55. Breezy. Chance of precipitation is 70%.

Night: Partly cloudy, with a low around 19.

Friday Dec 19

Day: Mostly sunny, with a high near 37.

Night: Partly cloudy, with a low around 30.

Saturday Dec 20

Day: Mostly sunny, with a high near 55.

Night: A 20 percent chance of rain. Mostly cloudy, with a low around 34.

Sunday Dec 21

Day: Partly sunny, with a high near 48.

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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