Triangle Rainfall & Precipitation: Monthly Averages and Year-Round Insights

This page shows the average amount of rainfall per month in Triangle. The numbers are calculated over a 30-year period to provide a reliable average. Let's now guide you through the details for a complete overview.

Triangle is known for its substantial rain/snowfall, with annual precipitation reaching 1193 mm.

Monthly Precipitation Levels

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

Triangle offers a pleasant mix of wetter and slightly drier months. The difference in precipitation between June (139 mm) and February (65 mm) is not too significant, making the climate enjoyable for visitors and residents alike.

June, the city’s wettest month, has a maximum daytime temperature of 29°C and receives 282 hours of sunshine. During the driest month February you can expect a temperature of 8°C. For more detailed insights into the city’s temperatures, visit our Triangle Temperature page.

Annual Precipitation in the United States of America

The map below shows the annual precipitation across the United States of America. You can also select the different months in case you are interested in a specific month.

Amsterdam Precipitation Compared World Wide

Triangle’s average annual precipitation is 1193 mm. Let’s compare this to some popular worldwide tourist destinations:

Chicago, USA, sees an annual precipitation of 1062 mm, with rain and snow contributing to its humid climate.

Meanwhile, Buenos Aires, Argentina, enjoys a humid subtropical climate with 1000 mm of annual rainfall, mostly in the summer.

Adelaide, Australia, enjoys 511 mm of annual precipitation, with dry summers and wet winters.

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

How is Precipitation Measured?

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.

Interesting weather facts

• "Ginger" was the longest-lasting Atlantic tropical storm, which spun around the open ocean for 28 days in 1971.
• The world's largest snowflake was recorded in the Guinness Book of Records, at 38 cm wide and 20 cm thick. The snowflake fell at Fort Keogh, Montana, USA, on 28 January 1887.
• The greatest snowfall recorded was on Mt. Rainier, Washington State, USA—over 31.5 meters fell during the winter of 1972.

For more detailed information about Triangle’s weather, including sunshine hours, humidity levels, and temperature data, visit our Triangle Climate page.