Mendota (IL) Weather & Climate: Best Time to Visit
Average temperatures, rainfall, sunshine and the best time to visit Mendota.
Climate overview of Mendota
Mendota, Illinois, United States of America, experiences significant temperature variation throughout the year. Summers bring daytime highs of 28°C (82°F) in July, while winters cool to -1°C (30°F) in January.
Rain/snowfall is high, totalling around 1030 mm (41 in) per year. June is the wettest month and January the driest. The city also experiences warm summers and very cold winters.
Mendota Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Mendota - and find the best time to visit.
Monthly Temperature in Mendota
Depending on the time of the year, temperatures range from comfortable to very cold in Mendota. Average maximum daytime temperatures range from a comfortable 28°C (82°F) in July, the warmest time of the year, to a very cold -1°C (30°F) during cooler months like January.
At night, you can expect temperatures ranging from 17°C (63°F) in July to around -10°C (14°F) during January.
Check out our detailed temperature page for more information.
Temperature ranges by month
Rainfall in Mendota
Mendota has a relatively rain/snowy climate with high precipitation levels, averaging 1030 mm (41 in) of rain/snowfall annually. Significant seasonal changes in precipitation occur throughout the year. In the wettest month, June it receives high rainfall, averaging 138 mm (5.4 in) of precipitation, recorded across 14 rainy days. In contrast, the driest month January brings less snowfall, with 41 mm (1.6 in) over 9 snowy days. For more details, please visit our Mendota Precipitation page.
The mean monthly precipitation over the year, including rain, hail, and snow
The average number of days each month with precipitation
Best Time to Visit Mendota
Monthly ratings reflect general weather comfort, based on daytime temperature and rainfall. Swimming and winter conditions are highlighted separately where relevant.
- Best overall: September
- Warmest weather: June, July and August
- Seasonal pattern: Warm summers and very cold winters
- Coldest conditions: January, with freezing nights around -10°C (14°F).
Frequently asked questions about the climate in Mendota
What is the best time to visit Mendota?
September typically offers the most optimal weather in Mendota. In contrast, January, February, March, November and December tend to have less optimal conditions. Mendota has warm summers and very cold winters.
What temperatures can I expect in Mendota?
Daytime highs range from -1°C (30°F) in January to 28°C (82°F) in July. Nighttime lows range from -10°C (14°F) to 17°C (63°F). Temperatures vary considerably through the year.
How much rain does Mendota get?
Annual rainfall is around 1030 mm (41 in). June is the wettest month with 138 mm (5.4 in), while January is the driest with 41 mm (1.6 in).
Mendota 3-Day Forecast
Mendota (IL) 3-Day Forecast
Mendota on the map
Mendota is highlighted - select any city to see its climate.
Popular this month
Where to go in July - average daytime high across popular destinations.
Bucket list
Need travel inspiration? Check out our bucket list articles and be inspired.
Yosemite National Park is definitely worth a visit
Vast forests, blue lakes, towering sequoias, and majestic waterfalls hint at the beauty of Yosemite National Park—a true natural masterpiece.
The 10 most alternative cities in the United States
Discover the top 10 fun and alternative U.S. cities rich in art, culture, and adventure. From Portland's hippy charm to Sedona's stunning landscapes.
Sedona: Explore Majestic Red Rock Landscapes
A picturesque artists' town surrounded by red rocks and known for its spirituality, vortex energy, and stunning hikes like Cathedral Rock.
10 most idyllic villages to visit in the United States
Discover 10 idyllic villages in the USA, from California to Vermont. Explore their unique charm, rich history, stunning nature, and vibrant arts scenes.