Westmont (IL) Temperatures: Monthly Averages and Year-Round Insights
On this page, we’ll explore Westmont’s temperature statistics in detail, including day and night variations and monthly averages. We’ll also compare the annual temperature to other cities in the United States of America.
Monthly Temperature Averages
The climate in Westmont is dynamic, ranging widely from very cold in winter to comfortable in summer. On average, maximum daytime temperatures range from a comfortable 29°C in July to a very cold -0°C in January. Nighttime temperatures can drop, with averages reaching -9°C in January.
The chart below illustrates the average maximum day and minimum night temperatures in Westmont by month:
The coldest temperatures are usually recorded between 4 AM and 6 AM, while the hottest temperatures occur near 3 PM, at the peak of the sun's warmth. July, the city’s warmest month, receives 319 hours of sunshine.
The chart below shows the average temperature throughout the year:
January, the city’s coldest month, receives about 52 mm of rainfall spread over roughly 13 days. For more information, please visit our Westmont Precipitation page.
Annual Temperatures in the United States of America Compared
The map below shows the annual temperature across the United States of America. You can also select the different months in case you are interested in a specific month.
very warm
warm
pleasant
moderate
cold
very cold
Westmont Temperatures Compared World Wide
Westmont’s average annual maximum temperature is 15°C. Let’s compare this with some popular tourist destinations:
The city of Rome, Italy, has an average annual temperature of 20°C, known for its sunny summers and comfortable winters.
Glasgow, Scotland, the average annual temperature is significantly lower at 13°C, with mild summers and cold winters.
Boston, USA, experiences seasonal shifts similar to New York, with an average annual temperature of 16°C.
In Tokyo, Japan, the average annual temperature is 21°C, expect warmer summers and milder winters.
How does the temperature feel?
Humidity is an essential factor in how you experience temperature. When a warm period is accompanied by high humidity, it results in a higher perceived temperature. This is especially true when temperatures exceed 25°C, as it can cause greater discomfort.
On the other hand, in cooler months, especially when temperatures dip below 10°C, high humidity can intensify the cold. This makes the air feel much colder than it really is.
In Westmont, during the coolest month, January, you will experience 72% humidity, which is considered high. This is accompanied by an average maximum temperature of -0°C. In the warmest month, July, the humidity is 68% combined with an average maximum temperature of 29°C, which creates a high-feel temperature. Explore our detailed page on humidity levels for further details.
How are these Temperatures Measured?
Generally, temperature data depicting climate is usually given over a 30-year average in order to reduce short-term fluctuations and reveal better long-term trends in climate conditions.
This temperature data is taken from land-based thermometers, ocean buoys, ships, and satellites. These measurements are transmitted to weather stations and climate centers around the globe where they are processed, averaged, and analyzed in order to monitor the trends and create climate models.
Global Warming and Its Effects
Climate change is affecting worldwide temperatures, including in Westmont. It has massive impacts on both local and global levels:
- Global Temperature Rise: The average global land and sea temperatures have risen by about 1.2°C since pre-industrial times.
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Local Impacts: Most regions of the world are witnessing warmer winters with fewer frost and snowfall days. The global frequency and severity of heatwaves have increased. For example, Europe's summers of 2018, 2019, and 2020 all broke records. Summers are also becoming drier; however, during winter, inland regions have experienced increased rainfall. This has caused elevated river levels and more cases of flooding.
Many countries are experiencing earlier springs and later autumns. This is why some bird species have shifted their migration dates.
For more detailed information about Westmont’s weather, including monthly rainfall, sunshine hours, and humidity levels, visit our Westmont climate page.
Current temperature in Westmont (IL)
4 m/s
overcast and small chance of slight rain
6 m/s
overcast and heavy rain
6 m/s
partly cloudy and no rain
