Lewistown, IL Weather Forecast & Alerts

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

1 Currently Active Alert for Lewistown

Current Conditions — Lewistown, IL

MACOMB MUNI (KMQB)

Clear

NULL F
Humidity:%
Wind Speed: mph
Barometer: in
Dewpoint: F
Visibility:10.00 mi
Precip:--
Heat Index:NA
Wind Chill:NA
Apr 25 2026, 09:15 AM CDT
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5-Day Forecast — Lewistown, IL

Saturday

High 75 °F
Mostly Sunny
Saturday
Night
Low 48 °F
Partly Cloudy
Sunday

High 77 °F
Mostly Cloudy
Sunday
Night
Low 59 °F
Chance of T-storms
Monday

High 77 °F
T-storms
Monday
Night
Low 50 °F
Partly Cloudy
Tuesday

High 68 °F
Partly Sunny
Tuesday
Night
Low 46 °F
Partly Cloudy
Wednesday

High 68 °F
Partly Sunny

Detailed Forecast — Lewistown, IL

Saturday
Mostly Sunny. High near 75°F. Wind 6 to 9 mph, with gusts as high as 15 mph.
Saturday Night
Partly Cloudy. Low around 48°F. Wind 6 to 7 mph, with gusts as high as 16 mph.
Sunday
Mostly Cloudy. High near 77°F. Wind 6 to 12 mph, with gusts as high as 20 mph.
Sunday Night
Chance of Thunderstorms. Low around 59°F. Wind 10 to 13 mph, with gusts as high as 25 mph.
Monday
Thunderstorms. High near 77°F. Wind 16 to 20 mph, with gusts as high as 32 mph.
Monday Night
Partly Cloudy. Low around 50°F. Wind around 12 mph, with gusts as high as 24 mph.
Tuesday
Partly Sunny. High near 68°F. Wind 5 to 12 mph, with gusts as high as 18 mph.
Tuesday Night
Partly Cloudy. Low around 46°F. Wind around 3 mph, with gusts as high as 12 mph.
Wednesday
Partly Sunny. High near 68°F. Wind 5 to 7 mph, with gusts as high as 13 mph.
Wednesday Night
Partly Cloudy. Low around 44°F. Wind around 3 mph, with gusts as high as 12 mph.
Thursday
Slight Chance of Showers. High near 66°F. Wind 7 to 9 mph, with gusts as high as 16 mph.
Thursday Night
Chance of Rain. Low around 46°F. Wind around 6 mph, with gusts as high as 16 mph.
Friday
Mostly Cloudy. High near 64°F. Wind 9 to 13 mph, with gusts as high as 21 mph.
IL Radar
Current Radar • IL
Day 1 Outlook • April 25, 2026

Observation History — Lewistown, 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)
09:15 AM CDT 10.00 Clear -- NULL % NA NA M
08:55 AM CDT 0.0 10.00 Clear -- 57.4 52.2 83% NA NA 29.97 1014.9
08:35 AM CDT 0.0 10.00 Clear -- 55.6 50.7 84% NA NA 29.96 1014.6
08:15 AM CDT 0.0 10.00 Clear -- 54.1 49.3 84% NA NA 29.97 1014.9
07:55 AM CDT 0.0 10.00 Clear -- 52.7 47.7 83% NA NA 29.96 1014.6
07:35 AM CDT 0.0 10.00 Clear -- 51.1 46.4 84% NA NA 29.95 1014.2
07:15 AM CDT 0.0 10.00 Clear -- 49.6 46.0 87% NA NA 29.95 1014.2
06:55 AM CDT 0.0 10.00 Clear -- 48.0 44.8 88% NA NA 29.95 1014.2
06:35 AM CDT 0.0 10.00 Clear -- 47.1 43.7 88% NA NA 29.94 1013.9
06:15 AM CDT 0.0 10.00 Clear -- 45.9 43.0 90% NA NA 29.94 1013.6
05:55 AM CDT 0.0 10.00 Clear -- 47.5 43.7 87% NA NA 29.94 1013.6
05:35 AM CDT 0.0 10.00 Clear -- 47.5 43.9 87% NA NA 29.92 1013.2
05:15 AM CDT 0.0 10.00 Clear -- 48.0 44.1 86% NA NA 29.92 1013.2
04:55 AM CDT 0.0 10.00 Clear -- 48.2 44.1 86% NA NA 29.92 1013.2
04:35 AM CDT 5.8 10.00 Clear -- 47.5 44.2 88% 44.8 NA 29.92 1013.2
04:15 AM CDT 0.0 10.00 Clear -- 47.3 44.1 88% NA NA 29.92 1013.2
03:55 AM CDT 0.0 10.00 Clear -- 48.6 44.6 86% NA NA 29.91 1012.9
03:35 AM CDT 0.0 10.00 Clear -- 49.8 44.8 83% NA NA 29.90 1012.5
03:15 AM CDT 0.0 10.00 Clear -- 48.9 44.8 86% NA NA 29.90 1012.5
02:55 AM CDT 0.0 10.00 Clear -- 48.0 44.4 87% NA NA 29.89 1012.2
02:35 AM CDT 0.0 10.00 Clear -- 47.8 44.6 88% NA NA 29.89 1012.2
02:15 AM CDT 0.0 10.00 Clear -- 48.4 44.8 87% NA NA 29.90 1012.5
01:55 AM CDT 0.0 10.00 Clear -- 49.1 44.8 85% NA NA 29.90 1012.5
01:35 AM CDT 0.0 10.00 Clear -- 50.0 45.1 83% NA NA 29.89 1012.2

Regional Weather Observation

MACOMB MUNI (KMQB)

Clear
NULL F

GALESBURG (KGBG)

Clear
NULL F

PEORIA (KPIA)

Clear
57.2 F

BURLINGTON (KBRL)

Clear
59.0 F

LINCOLN (KAAA)

Clear
58.8 F

FORT MADISON (KFSW)

Clear
NULL F
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