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Sycamore, IL Weather Tomorrow

Need tomorrow's weather for Sycamore? This 5 day forecast provides daily precipitation forecasts, changing sky conditions, daytime highs, overnight lows, Fahrenheit and Celsius temperatures, sunrise, sunset, wind chill, and local wind details for the Sycamore area and around DeKalb county, Illinois.
Updated: Thu Jul 16th 2026 11:45 PM CDT

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Sycamore, IL Weather – 7-17 – Sunny
93° / 71°
Sunny
In Sycamore, sunshine is likely with a high near 93°F and a low around 71°F. Rainfall predicted to have a 68% chance with an estimated 0.19in. Winds will be light at 8mph and gusts of 15mph at 10 PM. The humidity will be on the higher side, averaging about 80%, the maximum being 94% at 11 PM and 60% being its lowest at 12 PM. Barometric pressure is its highest of 30.05inHg at 7 AM, a lowest point of 29.92inHg at 7 PM with an avg 29.99inHg.
Sycamore, IL Weather – 7-18 – Sunny
87° / 69°

Weather Tomorrow

Sunny
Bright and sunny conditions in Sycamore, with a high of 87°F and a low of 69°F. There's a moderate 36% chance of rainfall with an estimated 0.02in. Wind will be moderate, blowing around 17mph on average and gusts of 20.3mph at 7 AM. High humidity with average of 85% is anticipated, the maximum being 96% at 2 AM and 71% being its lowest at 4 PM. Barometric pressure is its highest of 29.92inHg at 11 PM, a lowest point of 29.8inHg at 4 PM with an avg 29.85inHg.
Sycamore, IL Weather – 7-19 – Sunny
81° / 62°
Sunny
Sycamore could see a sunny day with daytime highs of 81°F and nighttime lows near 62°F. There's a very small chance of rainfall, only about 9% with an estimated 0in. Winds will be light at 8mph and gusts of 15mph at 4 AM. The humidity will be on the higher side, averaging about 76%, the maximum being 96% at 1 AM and 57% being its lowest at 4 PM. Barometric pressure is its highest of 30.02inHg at 9 AM, a lowest point of 29.93inHg at 12 AM with an avg 29.97inHg.
Sycamore, IL Weather – 7-20 – Sunny
82° / 63°
Sunny
It will be sunny in Sycamore, with a high of 82°F and a low of 63°F. There might be light rainfall having a 16% chance with an estimated 0in. Wind will be moderate, blowing around 14mph on average and gusts of 20.9mph at 11 PM. High humidity with average of 87% is anticipated, the maximum being 98% at 10 PM and 74% being its lowest at 12 PM. Barometric pressure is its highest of 29.96inHg at 12 AM, a lowest point of 29.7inHg at 11 PM with an avg 29.86inHg.
Sycamore, IL Weather – 7-21 – Sunny
80° / 59°
Sunny
Sunshine is in the forecast for Sycamore, with a high of 80°F and a low of 59°F. There's a moderate 49% chance of rainfall with an estimated 0.03in. Wind will be moderate, blowing around 19mph on average and gusts of 26.7mph at 10 PM. The humidity will be on the higher side, averaging about 80%, the maximum being 95% at 12 AM and 68% being its lowest at 3 PM. Barometric pressure is its highest of 29.99inHg at 11 PM, a lowest point of 29.64inHg at 3 AM with an avg 29.75inHg.
Sycamore, IL Weather – 7-22 – Sunny
70° / 48°
Sunny
Sycamore is set for a sunny day with temperatures peaking at 70°F and dipping to 48°F. There's a very small chance of rainfall, only about 6%. Wind will be moderate, blowing around 16mph on average and gusts of 23.7mph at 12 AM. The humidity will be on the higher side, averaging about 71%, the maximum being 86% at 4 AM and 55% being its lowest at 1 PM. Barometric pressure is its highest of 30.17inHg at 10 AM, a lowest point of 30.01inHg at 12 AM with an avg 30.12inHg.

Currently

Mist 74°F
30.07 inHg.
Barometer
67%
Humidity
E 11.5 mph
Wind
Mist

5 Day Forecast Nearby

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