Sims, IL Weather Forecast & Alerts

Current conditions, 5-day forecast, and active NWS weather alerts for Sims, IL.

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Current Conditions — Sims, IL

SALEM/LECKRONE (KSLO)

Cloudy

64.0 F
Humidity:55%
Wind Speed:SW 11.4 mph
Barometer:30.06 in
Dewpoint:47.5 F
Visibility:10.00 mi
Precip:--
Heat Index:NA
Wind Chill:NA
Apr 22 2026, 04:15 AM CDT
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5-Day Forecast — Sims, IL

Wednesday

High 78 °F
Mostly Sunny
Wednesday
Night
Low 55 °F
Mostly Clear
Thursday

High 80 °F
Mostly Sunny
Thursday
Night
Low 62 °F
Chance of Scattered T-storms
Friday

High 75 °F
T-storms
Friday
Night
Low 55 °F
Chance of Showers
Saturday

High 75 °F
Slight Chance of Showers
Saturday
Night
Low 51 °F
Partly Cloudy
Sunday

High 77 °F
Mostly Cloudy

Detailed Forecast — Sims, IL

Wednesday
Mostly Sunny. High near 78°F. Wind 7 to 10 mph, with gusts as high as 21 mph.
Wednesday Night
Mostly Clear. Low around 55°F. Wind 3 to 6 mph, with gusts as high as 13 mph.
Thursday
Mostly Sunny. High near 80°F. Wind 6 to 14 mph, with gusts as high as 21 mph.
Thursday Night
Chance of Scattered Thunderstorms. Low around 62°F. Wind 9 to 10 mph, with gusts as high as 20 mph.
Friday
Thunderstorms. High near 75°F. Wind 6 to 14 mph, with gusts as high as 21 mph.
Friday Night
Chance of Showers. Low around 55°F. Wind around 3 mph, with gusts as high as 10 mph.
Saturday
Slight Chance of Showers. High near 75°F. Wind 5 to 7 mph, with gusts as high as 13 mph.
Saturday Night
Partly Cloudy. Low around 51°F. Wind around 5 mph, with gusts as high as 12 mph.
Sunday
Mostly Cloudy. High near 77°F. Wind 6 to 8 mph, with gusts as high as 14 mph.
Sunday Night
Chance of Thunderstorms. Low around 59°F. Wind around 8 mph, with gusts as high as 16 mph.
Monday
Thunderstorms. High near 77°F. Wind 12 to 16 mph, with gusts as high as 24 mph.
Monday Night
Chance of Showers. Low around 53°F. Wind around 8 mph, with gusts as high as 17 mph.
Tuesday
Mostly Sunny. High near 71°F. Wind 6 to 12 mph, with gusts as high as 17 mph.
IL Radar
Current Radar • IL
Day 1 Outlook • April 22, 2026

Observation History — Sims, IL

Time Wind
(mph)		 Vis
(mi)		 Weather Precip (in) Temperature (F) Relative
Humidity		 Wind
Chill
(F)		 Heat
Index
(F)		 Pressure
Air Dwpt altimeter
(in)		 sea level
(mb)
04:15 AM CDT SW 11.4 10.00 Cloudy -- 64.0 47.5 55% NA NA 30.06 1018.0
03:55 AM CDT SW 11.4 10.00 Cloudy -- 64.4 47.3 54% NA NA 30.05 1017.6
03:35 AM CDT SW 12.8 10.00 Cloudy -- 64.8 47.1 53% NA NA 30.04 1017.3
03:15 AM CDT SW 10.3 10.00 Mostly Cloudy -- 64.9 47.3 53% NA NA 30.04 1017.3
02:55 AM CDT SW 9.2 10.00 Clear -- 64.4 46.6 52% NA NA 30.04 1017.3
02:35 AM CDT SW 12.8 G 19.7 10.00 Clear -- 64.9 46.4 51% NA NA 30.05 1017.6
02:15 AM CDT SW 13.9 G 20.8 10.00 Clear -- 65.5 46.0 49% NA NA 30.05 1017.6
01:55 AM CDT SW 15.0 10.00 Clear -- 64.9 46.2 51% NA NA 30.05 1017.6
01:35 AM CDT SW 13.9 10.00 Clear -- 65.1 46.4 51% NA NA 30.05 1017.6
01:15 AM CDT SW 12.8 10.00 Clear -- 65.3 46.4 50% NA NA 30.05 1017.6
12:55 AM CDT 12.8 G 19.7 10.00 Clear -- 65.5 46.4 50% NA NA 30.05 1017.6
12:35 AM CDT 12.8 10.00 Clear -- 65.5 46.6 50% NA NA 30.04 1017.3
12:15 AM CDT 12.8 10.00 Clear -- 66.4 46.8 49% NA NA 30.04 1017.3
11:55 PM CDT SW 16.1 10.00 Clear -- 67.3 46.6 47% NA NA 30.04 1017.3
11:35 PM CDT SW 13.9 10.00 Clear -- 67.1 46.0 47% NA NA 30.04 1017.3
11:15 PM CDT SW 11.4 G 19.7 10.00 Clear -- 67.1 46.2 47% NA NA 30.04 1017.3
10:55 PM CDT SW 16.1 G 21.9 10.00 Clear -- 67.3 46.2 47% NA NA 30.04 1017.3
10:35 PM CDT SW 16.1 10.00 Clear -- 67.8 46.2 46% NA NA 30.03 1016.9
10:15 PM CDT 15.0 G 20.8 10.00 Clear -- 68.2 45.9 45% NA NA 30.03 1016.9
09:55 PM CDT 13.9 G 21.9 10.00 Clear -- 68.0 46.0 45% NA NA 30.03 1016.9
09:35 PM CDT 15.0 G 20.8 10.00 Clear -- 68.5 45.7 44% NA NA 30.02 1016.6
09:15 PM CDT 16.1 10.00 Clear -- 68.7 45.9 44% NA NA 30.01 1016.3
08:55 PM CDT G 23.0 10.00 Clear -- 70.0 45.5 41% NA NA 30.01 1016.3
08:15 PM CDT 13.9 G 18.3 10.00 Clear -- 70.5 46.4 42% NA 69.3 30.00 1015.9

Regional Weather Observation

SALEM/LECKRONE (KSLO)

Cloudy
64.0 F

MOUNT VERNON (KMVN)

Mostly Clear
55.4 F

FLORA (KFOA)

NULL
64.4 F

FAIRFIELD (KFWC)

NULL
62.2 F

OLNEY-NOBLE (KOLY)

Cloudy
64.4 F

CENTRALIA (KENL)

Mostly Cloudy
59.5 F
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