Macomb (IL) Monthly Rainfall & Precipitation

This page shows both the average monthly rainfall and the number of rainy days in Macomb, Illinois, United States of America. The figures are based on a 30-year period (1990–2020) to provide a reliable average. Let's explore the details to provide you with a complete overview.

Macomb has a relatively rain/snowy climate with high precipitation levels, averaging 1042 mm (41 in) of rain/snowfall annually.

Monthly Precipitation Levels

The average number of days each month with precipitation (> 0.2 mm (0.01 in))

The climate in Macomb shows significant variation throughout the year. Expect 152 mm (6 in) of precipitation during the wettest month June, distributed over 13 rainy days.

In contrast, January offers drier and sunnier days, with around 41 mm (1.6 in) of snowfall over 8 snowy days.

June, the wettest month, has a maximum daytime temperature of 28°C (82°F). During the driest month January you can expect a temperature of 1°C (34°F). For more detailed insights into the city's temperatures, visit our Macomb Temperature page.

Macomb's average annual precipitation is 1042 mm (41 in). Let's compare this to some popular worldwide tourist destinations:

The climate in San Francisco, USA, is influenced by coastal weather, with 469 mm (18 in) of rainfall mostly during the winter months.

In Seoul, South Korea, the average annual precipitation is 1237 mm (49 in), with most rain falling during the summer monsoon season.

Melbourne, Australia, has 690 mm (27 in) of rainfall annually, spread fairly evenly throughout the year.

Bangkok, Thailand, experiences a tropical monsoon climate with 1668 mm (66 in) of annual rainfall, with the heaviest precipitation occurring during September and October.

Precipitation amounts are measured using specific gauges installed at weather stations, collecting both rain and snow and any other type of precipitation. Rainfall is measured directly in millimeters, while that from snow and ice is obtained by melting it. Automated systems often incorporate heaters to make this easier.

Information from these stations is transmitted via Wi-Fi, satellite, GPS, or telephone connections to central monitoring networks. This information is immediately updated and integrated into weather models and forecasts.

Climate change is affecting precipitation patterns worldwide, including Macomb (IL):

• Changing Rainfall Patterns: Global warming causes drastic changes in the patterns of rainfall. Some areas have been experiencing increased frequency and intensity of rainfall, while other areas experience longer dry spells or even droughts.
• Local Impacts: Many regions are experiencing heavier rainfall in the winter months and drier, hotter summers. This affects agriculture, water resources, and ecosystems.

• Mawsynram in India is noted as being the wettest place on earth, with over 11 meters (36 feet) of rain falling every year.
• In contrast, Antofagasta in Chile is among the driest places on the planet, getting less than 0.1mm (0.004 inches) per year, with some years recording virtually no rainfall.
• Nearly 1,650 thunderstorm cells are estimated over the planet at any given time.

For more detailed information about Macomb (IL)'s weather, including sunshine hours, humidity levels, and temperature data, visit our Macomb (IL) Climate page.