Weather Sullivan long-term weather forecast

Long-term weather forecast for Sullivan for ten days.

Saturday, Jan 17

23 / 19°F

0.00 in

15 mph

23 °F	16 °F	12 am
19 °F	10 °F	6 am
21 °F	14 °F	12 pm
19 °F	12 °F	6 pm

sunrise 7:12 am
sunset 4:57 pm

HOURLY

From morning untill noon overcast, in the afternoon clear, in the evening initially clear, later partly cloudy. The highest temperature 23 °F. Total rainfall 0.03 in. At night overcast. The lowest temperature 19 °F. Total rainfall 0.00 in.

Interactive map weather Illinois, USA

GPS: 39.5995; -88.6078

altitude: 679 ft
local time:

PLACES IN THE AREA

Weather forecast Sullivan, Illinois, USA extended forecast

Time			Precip.	Wind	Pressure	Humidity	Dew	total	Fog	Low	Middle	High
Saturday 01/17/2026
12 AM 1 AM	overcast	23 °F 16 °F	0.01 in	18 fps 12 mph west	29.9 in	75 %	18 °F	100 %	0%	100%	82%	19%
6 AM 7 AM	overcast	19 °F 10 °F	0.01 in	24 fps 16 mph west	29.9 in	69 %	12 °F	100 %	0%	100%	100%	0%
12 PM 1 PM	clear	21 °F 12 °F	0.0 in	21 fps 15 mph west-northwest	30.0 in	44 %	3 °F	0 %	0%	0%	0%	0%
6 PM 7 PM	partly cloudy	19 °F 12 °F	0.01 in	6 fps 4 mph north-northeast	30.0 in	51 %	5 °F	15 %	0%	10%	6%	0%
Sunday 01/18/2026
12 AM 1 AM	overcast	14 °F 7 °F	0.00 in	14 fps 10 mph north-northwest	30.1 in	56 %	1 °F	100 %	0%	98%	100%	0%
6 AM 7 AM	overcast	7 °F 0 °F	0.0 in	10 fps 7 mph northwest	30.2 in	57 %	-4 °F	98 %	0%	97%	28%	37%
12 PM 1 PM	partly cloudy	18 °F 10 °F	0.0 in	14 fps 10 mph west-southwest	30.1 in	33 %	-6 °F	15 %	0%	0%	15%	0%
6 PM 7 PM	overcast	21 °F 14 °F	0.00 in	12 fps 9 mph south-southwest	30.0 in	49 %	7 °F	100 %	0%	100%	99%	0%

Sullivan, Illinois, USA - information

State: Illinois, USA

GPS coordinates: 39.5995; -88.6078

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

Population: 4 494
Altitude: 679 ft
The administrative part:

Illinois, Springfield
Moultrie County, Sullivan

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Weather Sullivan, Illinois, USA. Weather forecast Sullivan.

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Data source

Weather forecast for Sullivan 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 Sullivan

data are always in the local time

Sun and light

Jan. 17, 2026

Sunrise:	Sunset:
7:12 am	4:57 pm
Noon:	Length of day:
12:04 pm	09:45
Start of civil twilight*:	End of civil twilight*:
6:42 am	5:27 pm
Start of nautical twilight*:	End of nautical twilight*:
6:10 am	5:59 pm
Start of astronomical twilight*:	End of astronomical twilight*:
5:37 am	6:31 pm
* What is Twilight?

Moon and moon phases

Moonrise:	Moonset:
01/17/2026 6:44 am	01/17/2026 3:45 pm
Next new moon:	Next full moon:
01/18/2026	02/01/2026