Pecatonica, IL Weather Forecast & Alerts

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

Current Conditions — Pecatonica, IL

MONROE (KEFT)

Clear

63.0 F
Humidity:64%
Wind Speed: 4.7 mph
Barometer:29.97 in
Dewpoint:50.7 F
Visibility:10.00 mi
Precip:--
Heat Index:NA
Wind Chill:NA
Apr 22 2026, 10:55 AM CDT
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5-Day Forecast — Pecatonica, IL

Wednesday

High 77 °F
Partly Sunny
Wednesday
Night
Low 57 °F
Partly Cloudy
Thursday

High 80 °F
Partly Sunny
Thursday
Night
Low 62 °F
T-storms Likely
Friday

High 73 °F
T-storms Likely
Friday
Night
Low 46 °F
Mostly Clear
Saturday

High 68 °F
Partly Sunny
Saturday
Night
Low 46 °F
Mostly Cloudy
Sunday

High 69 °F
Partly Sunny

Detailed Forecast — Pecatonica, IL

Wednesday
Partly Sunny. High near 77°F. Wind 5 to 8 mph, with gusts as high as 13 mph.
Wednesday Night
Partly Cloudy. Low around 57°F. Wind 7 to 8 mph, with gusts as high as 15 mph.
Thursday
Partly Sunny. High near 80°F. Wind 10 to 20 mph, with gusts as high as 28 mph.
Thursday Night
Thunderstorms Likely. Low around 62°F. Wind 14 to 15 mph, with gusts as high as 24 mph.
Friday
Thunderstorms Likely. High near 73°F. Wind 10 to 13 mph, with gusts as high as 20 mph.
Friday Night
Mostly Clear. Low around 46°F. Wind around 8 mph, with gusts as high as 14 mph.
Saturday
Partly Sunny. High near 68°F. Wind 6 to 10 mph, with gusts as high as 17 mph.
Saturday Night
Mostly Cloudy. Low around 46°F. Wind around 3 mph, with gusts as high as 7 mph.
Sunday
Partly Sunny. High near 69°F. Wind 12 to 15 mph, with gusts as high as 23 mph.
Sunday Night
Chance of Rain. Low around 51°F. Wind around 17 mph, with gusts as high as 25 mph.
Monday
Thunderstorms Likely. High near 71°F. Wind 20 to 22 mph, with gusts as high as 30 mph.
Monday Night
Chance of Rain. Low around 46°F. Wind around 16 mph, with gusts as high as 23 mph.
Tuesday
Mostly Cloudy. High near 64°F. Wind 10 to 17 mph, with gusts as high as 25 mph.
IL Radar
Current Radar • IL
Day 1 Outlook • April 22, 2026

Observation History — Pecatonica, 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)
10:55 AM CDT 4.7 10.00 Clear -- 63.0 50.7 64% NA NA 29.97 1014.9
10:15 AM CDT 10.3 10.00 Clear -- 60.4 50.2 69% NA NA 29.96 1014.6
09:55 AM CDT 9.2 10.00 Clear -- 59.0 49.8 72% NA NA 29.96 1014.6
09:35 AM CDT 9.2 10.00 Clear -- 58.1 49.3 72% NA NA 29.96 1014.6
09:15 AM CDT NE 10.3 10.00 Clear -- 57.2 48.9 74% NA NA 29.96 1014.6
08:55 AM CDT NE 9.2 10.00 Clear -- 56.3 49.1 77% NA NA 29.96 1014.6
08:35 AM CDT NE 6.9 10.00 Clear -- 55.0 48.7 79% NA NA 29.96 1014.6
08:15 AM CDT 6.9 10.00 Clear -- 53.6 48.2 82% NA NA 29.95 1014.2
07:55 AM CDT NE 6.9 10.00 Clear -- 53.2 48.2 83% NA NA 29.95 1014.2
07:35 AM CDT NE 6.9 10.00 Clear -- 52.7 48.0 84% NA NA 29.94 1013.9
07:15 AM CDT NE 11.4 10.00 Clear -- 52.2 47.5 84% NA NA 29.94 1013.6
06:55 AM CDT 9.2 10.00 Clear -- 51.1 47.1 86% NA NA 29.94 1013.6
06:35 AM CDT 8.1 10.00 Clear -- 51.1 46.9 86% NA NA 29.92 1013.2
06:15 AM CDT 6.9 10.00 Clear -- 51.6 47.5 86% NA NA 29.91 1012.9
05:55 AM CDT 8.1 10.00 Clear -- 53.6 49.8 87% NA NA 29.90 1012.5
05:35 AM CDT 5.8 10.00 Clear -- 54.1 49.3 84% NA NA 29.89 1012.2
05:15 AM CDT W 6.9 10.00 Clear -- 57.9 51.6 80% NA NA 29.88 1011.9
04:55 AM CDT W 5.8 10.00 Clear -- 58.6 52.2 79% NA NA 29.88 1011.9
04:35 AM CDT 0.0 10.00 Clear -- 58.5 51.4 77% NA NA 29.88 1011.9
04:15 AM CDT 0.0 10.00 NULL -- 59.0 51.1 75% NA NA 29.87 1011.5
03:55 AM CDT 0.0 10.00 Clear -- 58.5 51.3 77% NA NA 29.87 1011.5
03:35 AM CDT 0.0 10.00 Clear -- 58.8 50.9 75% NA NA 29.86 1011.2
03:15 AM CDT 0.0 10.00 Clear -- 59.2 51.1 74% NA NA 29.87 1011.5
02:55 AM CDT 3.4 10.00 Clear -- 58.8 50.5 74% NA NA 29.86 1011.2

Regional Weather Observation

MONROE (KEFT)

Clear
63.0 F

FREEPORT (KFEP)

Clear
67.3 F

JANESVILLE/ROCK (KJVL)

Clear
64.4 F

ROCKFORD (KRFD)

Mostly Clear
69.8 F

SAVANNA/TRITOWN (KSFY)

Clear
71.1 F

(KMRJ)


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