Prophetstown, IL Weather Forecast for 5-Days

Updated: Thu Mar 5th 2026 11:30 AM CST

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Prophetstown, IL Weather – 3-5 – Fog
52° / 40°
Fog
Fog is in the forecast for Prophetstown, with a high of 52°F and a low of 40°F. Winds will be light at 9mph and gusts of 15.6mph at 11 PM. High humidity with average of 93% is anticipated, the maximum being 95% at 12 PM and 82% being its lowest at 5 PM. Barometric pressure is its highest of 30.05inHg at 10 PM, a lowest point of 30inHg at 4 PM with an avg 30.02inHg.
Prophetstown, IL Weather – 3-6 – Scattered Showers
74° / 42°

Weather Tomorrow

Scattered Showers
Daytime highs will reach 74°F with lows dropping to 42°F in Prophetstown, where on and off showers are set to occur. Rainfall predicted to have a 70% chance with an estimated 0.07in. Wind will be moderate, blowing around 19mph on average and gusts of 30.3mph at 11 PM. High humidity with average of 89% is anticipated, the maximum being 98% at 6 AM and 65% being its lowest at 4 PM. Barometric pressure is its highest of 30.04inHg at 12 AM, a lowest point of 29.68inHg at 11 PM with an avg 29.88inHg.
Prophetstown, IL Weather – 3-7 – Heavy Rain
61° / 38°
Heavy Rain
Daytime highs will reach 61°F with lows dropping to 38°F in Prophetstown, where it will rain at times. The chance of rain is 89% with an estimated 2.01in. Winds will be strong at speeds peaking at 23mph and gusts of 35.4mph at 2 AM. High humidity with average of 88% is anticipated, the maximum being 98% at 6 AM and 74% being its lowest at 4 PM. Barometric pressure is its highest of 30.12inHg at 10 PM, a lowest point of 29.69inHg at 7 AM with an avg 29.9inHg.
Prophetstown, IL Weather – 3-8 – Partly Cloudy
61° / 28°
Partly Cloudy
It will be cloudy in Prophetstown, with a high of 61°F and a low of 28°F. Wind will be moderate, blowing around 18mph on average and gusts of 35.4mph at 2 AM. The humidity will be on the higher side, averaging about 66%, the maximum being 96% at 6 AM and 26% being its lowest at 4 PM. Barometric pressure is its highest of 30.13inHg at 1 AM, a lowest point of 29.73inHg at 2 AM with an avg 29.98inHg.
Prophetstown, IL Weather – 3-9 – Sunny
69° / 48°
Sunny
Bright and sunny conditions in Prophetstown, with a high of 69°F and a low of 48°F. Wind will be moderate, blowing around 20mph on average and gusts of 28.9mph at 7 AM. Humidity levels should be comfortable, sitting around 46% on average, the maximum being 56% at 6 AM and 31% being its lowest at 4 PM. Barometric pressure is its highest of 30.07inHg at 12 AM, a lowest point of 29.79inHg at 3 PM with an avg 29.83inHg.
Prophetstown, IL Weather – 3-10 – Moderate Rain
74° / 52°
Moderate Rain
Highs will reach 74°F with lows near 52°F in Prophetstown, where rain showers are. Rainfall predicted to have a 53% chance with an estimated 0.47in. Winds will be strong at speeds peaking at 23mph and gusts of 27.3mph at 11 PM. The humidity will be on the higher side, averaging about 79%, the maximum being 97% at 7 PM and 61% being its lowest at 12 AM. Barometric pressure is its highest of 29.88inHg at 12 AM, a lowest point of 29.62inHg at 7 PM with an avg 29.74inHg.

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