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Pittsfield, IL Weather Forecast for 5-Days

Updated: Mon May 18th 2026 7:30 PM CDT

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Pittsfield, IL Weather – 5-18 – Heavy Rain
77° / 64°
Heavy Rain
Periods of rain are likely in Pittsfield, with a high of 77°F and a low of 64°F. The chance of rain is 89% with an estimated 2.75in. Wind will be moderate, blowing around 20mph on average and gusts of 29.9mph at 11 PM. High humidity with average of 82% is anticipated, the maximum being 85% at 11 PM and 78% being its lowest at 10 PM. Barometric pressure is its highest of 29.88inHg at 9 PM, a lowest point of 29.84inHg at 11 PM with an avg 29.87inHg.
Pittsfield, IL Weather – 5-19 – Moderate Rain
75° / 58°

Weather Tomorrow

Moderate Rain
In Pittsfield, periods of rain are likely with highs near 75°F and lows around 58°F. The chance of rain is 89% with an estimated 0.51in. Wind will be moderate, blowing around 19mph on average and gusts of 31.3mph at 12 AM. High humidity with average of 91% is anticipated, the maximum being 98% at 4 AM and 85% being its lowest at 12 PM. Barometric pressure is its highest of 30.17inHg at 11 PM, a lowest point of 29.83inHg at 12 AM with an avg 29.98inHg.
Pittsfield, IL Weather – 5-20 – Partly Cloudy
61° / 48°
Partly Cloudy
Overcast conditions are in the forecast for Pittsfield, with a high of 61°F and a low of 48°F. Wind will be moderate, blowing around 13mph on average and gusts of 18.7mph at 4 AM. The humidity will be on the higher side, averaging about 74%, the maximum being 86% at 5 AM and 62% being its lowest at 2 PM. Barometric pressure is its highest of 30.27inHg at 9 AM, a lowest point of 30.18inHg at 6 PM with an avg 30.22inHg.
Pittsfield, IL Weather – 5-21 – Partly Cloudy
67° / 50°
Partly Cloudy
Daytime highs will reach 67°F with lows dropping to 50°F in Pittsfield, where it will be cloudy. Wind will be moderate, blowing around 12mph on average and gusts of 18.3mph at 12 AM. The humidity will be on the higher side, averaging about 74%, the maximum being 93% at 11 PM and 58% being its lowest at 4 AM. Barometric pressure is its highest of 30.2inHg at 12 AM, a lowest point of 30.05inHg at 6 PM with an avg 30.13inHg.
Pittsfield, IL Weather – 5-22 – Scattered Showers
59° / 52°
Scattered Showers
In Pittsfield, scattered showers are likely with a high near 59°F and a low around 52°F. The chance of rain is 84% with an estimated 0.01in. Wind will be moderate, blowing around 11mph on average and gusts of 15.1mph at 6 AM. High humidity with average of 91% is anticipated, the maximum being 96% at 12 AM and 86% being its lowest at 10 AM. Barometric pressure is its highest of 30.05inHg at 2 AM, a lowest point of 29.96inHg at 6 PM with an avg 30inHg.
Pittsfield, IL Weather – 5-23 – Scattered Showers
76° / 57°
Scattered Showers
Highs will reach 76°F with lows near 57°F in Pittsfield, where scattered showers are. The chance of rain is 86% with an estimated 0.07in. Winds will be light at 6mph and gusts of 12.5mph at 10 PM. High humidity with average of 90% is anticipated, the maximum being 97% at 4 AM and 71% being its lowest at 4 PM. Barometric pressure is its highest of 30.01inHg at 11 PM, a lowest point of 29.96inHg at 4 PM with an avg 29.99inHg.

Currently

Partly Cloudy 68°F
29.87 inHg.
Barometer
83%
Humidity
S 29.5 mph
Wind
Partly Cloudy

5 Day Forecast Nearby

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