Weather Harristown long-term weather forecast

Long-term weather forecast for Harristown for ten days.

Thursday, Jan 15

-1 / -6°C

0.9 mm

11 km/h

-4 °C	-8 °C	12 am
-6 °C	-9 °C	6 am
-1 °C	-5 °C	12 pm
-1 °C	-5 °C	6 pm

sunrise 7:15 am
sunset 4:56 pm

HOURLY

During the day overcast, in the evening initially overcast, later light snow. The highest temperature -1 °C. Total rainfall 0.9 mm. At night overcast. The lowest temperature -6 °C. Total rainfall 0.1 mm.

Interactive map weather Illinois, USA

GPS: 39.8539; -89.0840

altitude: 213 m
local time:

PLACES IN THE AREA

Weather forecast Harristown, Illinois, USA extended forecast

Time			Precip.	Wind	Pressure	Humidity	Dew	total	Fog	Low	Middle	High
Thursday 01/15/2026
12 AM 1 AM	overcast	-4 °C -8 °C	0.0 mm	4.5 m/s 16 km/h north	1020 hPa	61 %	-10 °C	89 %	0%	89%	0%	0%
6 AM 7 AM	clear	-6 °C -9 °C	0.0 mm	0.7 m/s 3 km/h north	1020 hPa	66 %	-11 °C	1 %	0%	1%	0%	0%
12 PM 1 PM	overcast	-1 °C -5 °C	0.0 mm	3.1 m/s 11 km/h southwest	1017 hPa	49 %	-10 °C	100 %	0%	0%	100%	100%
6 PM 7 PM	light snow	-1 °C -5 °C	0.9 mm	4.5 m/s 16 km/h south-southwest	1011 hPa	59 %	-7 °C	100 %	0%	3%	100%	100%
Friday 01/16/2026
12 AM 1 AM	overcast	0 °C -4 °C	0.1 mm	5.0 m/s 18 km/h south-southwest	1006 hPa	65 %	-5 °C	100 %	0%	100%	100%	0%
6 AM 7 AM	overcast	0 °C -3 °C	0.0 mm	5.2 m/s 19 km/h west	1004 hPa	76 %	-3 °C	100 %	0%	99%	100%	7%
12 PM 1 PM	snow	2 °C -2 °C	1.1 mm	6.6 m/s 24 km/h west	1005 hPa	59 %	-5 °C	100 %	0%	100%	78%	0%
6 PM 7 PM	overcast	0 °C -4 °C	0.2 mm	5.7 m/s 21 km/h west	1011 hPa	79 %	-3 °C	100 %	0%	99%	100%	0%

Harristown, Illinois, USA - information

State: Illinois, USA

GPS coordinates: 39.8539; -89.0840

Time zone: America / Chicago time difference in hours with time in US is -7 hours

Population: 1 332
Altitude: 213 m
The administrative part:

Illinois, Springfield
Macon County, Macon

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Weather Harristown, Illinois, USA. Weather forecast Harristown.

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Data source

Weather forecast for Harristown is supplied by MET Norway Norwegian Meteorological Institute and the NRK.

Feels like

To calculate the perceived temperature, we use the Australian Apparent Temperature (AAT) model, which is designed for year-round calculations and takes air humidity into account in addition to temperature and wind speed.

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Astronomical information Harristown

data are always in the local time

Sun and light

Jan. 15, 2026

Sunrise:	Sunset:
7:15 am	4:56 pm
Noon:	Length of day:
12:05 pm	09:40
Start of civil twilight*:	End of civil twilight*:
6:45 am	5:26 pm
Start of nautical twilight*:	End of nautical twilight*:
6:12 am	5:59 pm
Start of astronomical twilight*:	End of astronomical twilight*:
5:40 am	6:31 pm
* What is Twilight?

Moon and moon phases

Moonrise:	Moonset:
01/15/2026 5:06 am	01/15/2026 1:52 pm
Next new moon:	Next full moon:
01/18/2026	02/01/2026