Jamestown (NY) Rainfall & Precipitation: Monthly Averages and Year-Round Insights

This page shows the average amount of rainfall per month in Jamestown (NY). The numbers are calculated over a 30-year period to provide a reliable average. Let’s explore the details in depth to provide you with a complete overview.

Jamestown has a notably wet climate with abundant precipitation, recording 1221 mm of rain/snowfall per year.

Monthly Precipitation Levels

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

Jamestown experiences moderate seasonal variation in snow/rainfall, with monthly averages ranging from 127 mm in December, the wettest month, and 76 mm in February, the driest month.

December, the city’s wettest month, has a maximum daytime temperature of 3°C. During the driest month February you can expect a temperature of -1°C. For more detailed insights into the city’s temperatures, visit our Jamestown 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

Jamestown’s average annual precipitation is 1221 mm. Let’s compare this to some popular worldwide tourist destinations:

New York City, USA, receives 1276 mm of rainfall annually, with precipitation evenly distributed throughout the year.

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

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

Mumbai, India, experiences a tropical monsoon climate with 1860 mm of annual rainfall, with the majority of precipitation happening during the monsoon season from June to September.

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

• The U.S. has a significant number of thunderstorms every year, with over 14.6 million taking place across the world annually.
• Approximately 70% of lightning bolts strike land rather than oceans.
• A storm named John was the longest-lasting Pacific tropical storm, continuing for 31 days. As it crossed the dateline twice, it changed status from a hurricane to a typhoon and back to a hurricane.

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