Rochester (IN) Monthly Rainfall & Precipitation

This page shows both the average monthly rainfall and the number of rainy days in Rochester, Indiana, United States of America. This average is based on long-term data collected between 1990 and 2020. Now, let's explore all the details to give you a full picture.

Rochester has a relatively rain/snowy climate with high precipitation levels, averaging 1057 mm (42 in) of rain/snowfall annually.

Monthly Precipitation Levels

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

The seasons in Rochester, bring significant changes in precipitation. The wettest month, June, receives high rainfall, with an average of 128 mm (5 in) of precipitation. This rainfall is distributed across 13 rainy days.

In contrast, the driest month, February, experiences much less snow/rainfall, totaling 59 mm (2.3 in) over 10 snowy/rainy days. These distinct seasonal differences provide diverse experiences throughout the year.

June, the wettest month, has a maximum daytime temperature of 27°C (81°F). The city receives 300 hours of sunshine in this period. During the driest month February you can expect a temperature of 1°C (34°F). For more detailed insights into the city's temperatures, visit our Rochester Temperature page.

Rochester's average annual precipitation is 1057 mm (42 in). Let's compare this to some popular worldwide tourist destinations:

In Barcelona, Spain, the average annual precipitation is 620 mm (24 in), evenly distributed across the year with no extreme wet or dry seasons.

Beijing, China, receives 560 mm (22 in) of annual precipitation, concentrated in the summer months.

In Brisbane, Australia, the annual precipitation is 979 mm (39 in), making it wetter than Sydney.

Kuala Lumpur, Malaysia, receives 2529 mm (100 in) of annual rainfall, characteristic of its equatorial tropical rainforest climate, with consistent rainfall throughout the year and peak months during March and November.

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.

Precipitation has a very strong role in determining the local climate and ecosystem:

• 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 Rochester (IN)'s weather, including sunshine hours, humidity levels, and temperature data, visit our Rochester (IN) Climate page.