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Pecatonica, IL Weather Tomorrow

Whether you're planning work or travel, tomorrow's Pecatonica weather and 5 day forecast offer precipitation potential, daytime and nighttime forecasts, temperature highs and lows in Fahrenheit and Celsius, sunrise and sunset times, cloud cover, wind chill, wind speed, and wind direction for the Pecatonica area and around Winnebago county, Illinois.
Updated: Sun Sep 20th 2026 10:00 AM CDT
Pecatonica, IL Weather – 9-20 – Overcast
68° / 57°
Overcast
It will be overcast in Pecatonica, with a high of 68°F and a low of 57°F. The chance of rain is 92% with an estimated 2.16in. Wind will be moderate, blowing around 17mph on average and gusts of 30mph at 9 PM. High humidity with average of 92% is anticipated, the maximum being 97% at 11 AM and 76% being its lowest at 8 PM. Barometric pressure is its highest of 30.1inHg at 11 PM, a lowest point of 30.01inHg at 11 AM with an avg 30.04inHg.
Pecatonica, IL Weather – 9-21 – Overcast
57° / 51°

Weather Tomorrow

Overcast
Daytime highs will reach 57°F with lows dropping to 51°F in Pecatonica, where it will be overcast. Rainfall predicted to have a 73% chance with an estimated 0.05in. Wind will be moderate, blowing around 15mph on average and gusts of 29.5mph at 12 AM. High humidity with average of 85% is anticipated, the maximum being 92% at 12 PM and 78% being its lowest at 5 AM. Barometric pressure is its highest of 30.19inHg at 10 PM, a lowest point of 30.08inHg at 1 AM with an avg 30.14inHg.
Pecatonica, IL Weather – 9-22 – Scattered Showers
59° / 50°
Scattered Showers
Daytime highs will reach 59°F with lows dropping to 50°F in Pecatonica, where on and off showers are set to occur. There's a moderate 30% chance of rainfall with an estimated 0.01in. Wind will be moderate, blowing around 15mph on average and gusts of 25.3mph at 12 AM. The humidity will be on the higher side, averaging about 73%, the maximum being 82% at 2 AM and 57% being its lowest at 3 PM. Barometric pressure is its highest of 30.32inHg at 8 PM, a lowest point of 30.2inHg at 1 AM with an avg 30.27inHg.
Pecatonica, IL Weather – 9-23 – Sunny
62° / 49°
Sunny
Sunshine is in the forecast for Pecatonica, with a high of 62°F and a low of 49°F. There might be light rainfall having a 19% chance with an estimated 0in. Wind will be moderate, blowing around 14mph on average and gusts of 22.4mph at 12 AM. High humidity with average of 84% is anticipated, the maximum being 95% at 7 AM and 72% being its lowest at 3 PM. Barometric pressure is its highest of 30.39inHg at 8 AM, a lowest point of 30.33inHg at 1 AM with an avg 30.36inHg.
Pecatonica, IL Weather – 9-24 – Overcast
65° / 52°
Overcast
Pecatonica is set for cloud-filled skies with temperatures peaking at 65°F and dipping to 52°F. There might be light rainfall having a 20% chance with an estimated 0in. Wind will be moderate, blowing around 12mph on average and gusts of 20.8mph at 8 AM. The humidity will be on the higher side, averaging about 79%, the maximum being 94% at 5 AM and 53% being its lowest at 2 PM. Barometric pressure is its highest of 30.39inHg at 11 AM, a lowest point of 30.19inHg at 4 PM with an avg 30.34inHg.
Pecatonica, IL Weather – 9-25 – Overcast
65° / 54°
Overcast
In Pecatonica, it will be overcast with highs near 65°F and lows around 54°F. There's a moderate 26% chance of rainfall with an estimated 0in. Winds will be light at 7mph and gusts of 12.3mph at 12 AM. High humidity with average of 81% is anticipated, the maximum being 92% at 11 PM and 64% being its lowest at 4 PM. Barometric pressure is its highest of 30.36inHg at 12 AM, a lowest point of 30.18inHg at 4 PM with an avg 30.22inHg.

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