Home / Local Weather & Traffic / Illinois / Mendota / Weather Forecast

Mendota, IL Weather Tomorrow

Need tomorrow's weather for Mendota? This 5 day forecast provides precipitation chances, day and night conditions, high and low temperatures in Fahrenheit and Celsius, sunrise, sunset, sky conditions, wind chill, and wind speed with direction for the Mendota area and around LaSalle county, Illinois.
Updated: Mon Sep 14th 2026 12:00 AM CDT
Mendota, IL Weather – 9-14 – Overcast
69° / 53°
Overcast
Mendota may see cloud-filled skies, with daytime highs of 69°F and overnight lows near 53°F. There might be light rainfall having a 13% chance with an estimated 0in. Wind will be moderate, blowing around 16mph on average and gusts of 40.7mph at 11 PM. The humidity will be on the higher side, averaging about 71%, the maximum being 82% at 6 AM and 58% being its lowest at 1 PM. Barometric pressure is its highest of 30.25inHg at 6 AM, a lowest point of 30.01inHg at 10 PM with an avg 30.16inHg.
Mendota, IL Weather – 9-15 – Light Rain Shower
81° / 65°

Weather Tomorrow

Light Rain Shower
Rain showers are in the forecast for Mendota, with a high of 81°F and a low of 65°F. The chance of rain is 86% with an estimated 0.34in. Wind will be moderate, blowing around 15mph on average and gusts of 39.6mph at 12 AM. High humidity with average of 86% is anticipated, the maximum being 96% at 7 AM and 68% being its lowest at 12 AM. Barometric pressure is its highest of 30.19inHg at 11 PM, a lowest point of 29.96inHg at 3 AM with an avg 30.04inHg.
Mendota, IL Weather – 9-16 – Scattered Showers
67° / 62°
Scattered Showers
In Mendota, showers likely at times with highs near 67°F and lows around 62°F. The chance of rain is 82% with an estimated 0.11in. Winds will be light at 9mph and gusts of 17.9mph at 4 AM. High humidity with average of 90% is anticipated, the maximum being 99% at 10 PM and 79% being its lowest at 3 AM. Barometric pressure is its highest of 30.32inHg at 11 AM, a lowest point of 30.2inHg at 12 AM with an avg 30.26inHg.
Mendota, IL Weather – 9-17 – Light Rain Shower
71° / 64°
Light Rain Shower
Daytime highs will reach 71°F with lows dropping to 64°F in Mendota, where it will rain at times. The chance of rain is 89% with an estimated 0.19in. Winds will be light at 10mph and gusts of 16.8mph at 8 PM. High humidity with average of 92% is anticipated, the maximum being 99% at 12 AM and 82% being its lowest at 11 PM. Barometric pressure is its highest of 30.27inHg at 10 AM, a lowest point of 30.2inHg at 6 PM with an avg 30.23inHg.
Mendota, IL Weather – 9-18 – Sunny
78° / 64°
Sunny
In Mendota, a sunny day is likely with a high near 78°F and a low around 64°F. There might be light rainfall having a 18% chance with an estimated 0in. Wind will be moderate, blowing around 11mph on average and gusts of 28.6mph at 11 PM. High humidity with average of 84% is anticipated, the maximum being 95% at 6 AM and 71% being its lowest at 4 PM. Barometric pressure is its highest of 30.24inHg at 12 AM, a lowest point of 29.95inHg at 11 PM with an avg 30.12inHg.
Mendota, IL Weather – 9-19 – Sunny
86° / 69°
Sunny
Mendota may see sunshine, with daytime highs of 86°F and overnight lows near 69°F. There might be light rainfall having a 12% chance. Wind will be moderate, blowing around 15mph on average and gusts of 34.3mph at 4 AM. High humidity with average of 81% is anticipated, the maximum being 94% at 10 PM and 61% being its lowest at 1 PM. Barometric pressure is its highest of 29.93inHg at 12 AM, a lowest point of 29.74inHg at 4 PM with an avg 29.81inHg.

Currently

Clear 56°F
30.21 inHg.
Barometer
76%
Humidity
NE 11.2 mph
Wind
Clear

5 Day Forecast Nearby

More Local Information

Bookmark and Share

Get the LocalConditions.com App on Google Play
Sign up for a membership to go Ad free