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

Today's forecast for Saint Jacob shows a low of 26 degrees Fahrenheit. Mostly clear, with a low around 26.

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

The 7-day forecast for Saint Jacob shows highs from 36 to 55 degrees and lows from 20 to 35 degrees Fahrenheit. Expect precipitation on 2 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 (20% chance), Thursday (80% 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

32°F
Feels Like 32°F

Humidity 49% Dew Point 15°F Wind Calm Barometer 30.13 in.

Report from a MADIS/MESONET weather station 0.8 mi. NNE of central Saint Jacob
at 5:48 PM Mon, Dec 15, 2025

Point Forecast at a Glance

MonDec 15

TueDec 16

WedDec 17

ThuDec 18

80%

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 44°F to 47°F, reaching a high of 55°F. Some rain possible with at least 2 days showing precipitation chances of 20% or higher.

Climate Context

This week's forecast shows temperatures running 4°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

Night: Mostly clear, with a low around 26. South wind around 7 mph.

Tuesday Dec 16

Day: Mostly sunny, with a high near 44. South wind 7 to 13 mph, with gusts as high as 20 mph.

Night: Mostly cloudy, with a low around 33. South wind 5 to 10 mph.

Wednesday Dec 17

Day: Sunny, with a high near 52. Calm wind becoming southeast 5 to 8 mph in the afternoon.

Night: A 20 percent chance of showers after midnight. Mostly cloudy, with a temperature falling to near 41 by 8pm, then rising to around 52 during the remainder of the night. South wind 9 to 16 mph, with gusts as high as 24 mph.

Thursday Dec 18

Day: Showers and possibly a thunderstorm before noon, then a chance of showers. Temperature rising to near 55 by 8am, then falling to around 45 during the remainder of the day. Breezy. Chance of precipitation is 80%.

Night: Partly cloudy, with a low around 20.

Friday Dec 19

Day: Sunny, with a high near 36.

Night: Partly cloudy, with a low around 30.

Saturday Dec 20

Day: Mostly sunny, with a high near 55.

Night: Mostly cloudy, with a low around 32.

Sunday Dec 21

Day: Mostly sunny, with a high near 47.

Night: Mostly cloudy, with a low around 35.

Monday Dec 22

Day: Partly sunny, with a high near 53.

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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