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Plainfield, IL Weather Tomorrow

Check tomorrow's local weather for Plainfield and explore a complete 5 day forecast covering 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 Plainfield area and around Will county, Illinois.
Updated: Sun Sep 13th 2026 10:15 AM CDT
Plainfield, IL Weather – 9-13 – Sunny
70° / 57°
Sunny
In Plainfield, a sunny day is likely with a high near 70°F and a low around 57°F. There might be light rainfall having a 17% chance with an estimated 0in. Wind will be moderate, blowing around 15mph on average and gusts of 21.3mph at 9 PM. The humidity will be on the higher side, averaging about 64%, the maximum being 76% at 11 PM and 49% being its lowest at 2 PM. Barometric pressure is its highest of 30.18inHg at 10 PM, a lowest point of 30.08inHg at 5 PM with an avg 30.12inHg.
Plainfield, IL Weather – 9-14 – Sunny
71° / 54°

Weather Tomorrow

Sunny
Highs will reach 71°F with lows near 54°F in Plainfield, where a sunny day is. There's a very small chance of rainfall, only about 6%. Wind will be moderate, blowing around 16mph on average and gusts of 36.1mph at 11 PM. The humidity will be on the higher side, averaging about 64%, the maximum being 80% at 7 AM and 46% being its lowest at 3 PM. Barometric pressure is its highest of 30.27inHg at 8 AM, a lowest point of 30.04inHg at 9 PM with an avg 30.18inHg.
Plainfield, IL Weather – 9-15 – Light Rain Shower
77° / 62°
Light Rain Shower
Highs will reach 77°F with lows near 62°F in Plainfield, where rain is. The chance of rain is 88% with an estimated 0.58in. Wind will be moderate, blowing around 16mph on average and gusts of 39.8mph at 12 AM. High humidity with average of 85% is anticipated, the maximum being 96% at 10 PM and 59% being its lowest at 12 AM. Barometric pressure is its highest of 30.19inHg at 11 PM, a lowest point of 30.01inHg at 3 AM with an avg 30.07inHg.
Plainfield, IL Weather – 9-16 – Light Rain Shower
69° / 62°
Light Rain Shower
Plainfield could see rain showers with daytime highs of 69°F and nighttime lows near 62°F. The chance of rain is 85% with an estimated 0.21in. Winds will be light at 9mph and gusts of 19.3mph at 11 PM. High humidity with average of 87% is anticipated, the maximum being 94% at 10 PM and 75% being its lowest at 11 AM. Barometric pressure is its highest of 30.3inHg at 12 PM, a lowest point of 30.2inHg at 3 AM with an avg 30.26inHg.
Plainfield, IL Weather – 9-17 – Overcast
72° / 62°
Overcast
Daytime highs will reach 72°F with lows dropping to 62°F in Plainfield, where skies will be overcast. The chance of rain is 78% with an estimated 0.12in. Winds will be light at 10mph and gusts of 19.3mph at 12 AM. High humidity with average of 83% is anticipated, the maximum being 97% at 2 AM and 67% being its lowest at 5 PM. Barometric pressure is its highest of 30.31inHg at 11 AM, a lowest point of 30.23inHg at 3 AM with an avg 30.27inHg.
Plainfield, IL Weather – 9-18 – Overcast
72° / 59°
Overcast
Skies will be overcast in Plainfield, with a high of 72°F and a low of 59°F. There might be light rainfall having a 14% chance. Wind will be moderate, blowing around 11mph on average and gusts of 20.6mph at 11 PM. The humidity will be on the higher side, averaging about 74%, the maximum being 93% at 4 AM and 54% being its lowest at 1 PM. Barometric pressure is its highest of 30.29inHg at 12 AM, a lowest point of 30.11inHg at 11 PM with an avg 30.23inHg.

Currently

Overcast 65°F
30.06 inHg.
Barometer
58%
Humidity
N 14 mph
Wind
Overcast

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