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

This page shows the average amount of rainfall per month in Holtsville (NY). 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.

Holtsville experiences significant rain/snowfall throughout the year, averaging 1197 mm of precipitation annually.

Monthly Precipitation Levels

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

The amount of precipitation varies moderately throughout the year. The wettest month, December, sees around 134 mm of rainfall, perfect for those who enjoy a bit of rain now and then. The driest month, November, still receives a respectable 80 mm of rainfall.

December, the city’s wettest month, has a maximum daytime temperature of 8°C. During the driest month November you can expect a temperature of 12°C. For more detailed insights into the city’s temperatures, visit our Holtsville 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

Holtsville’s average annual precipitation is 1197 mm. Let’s compare this to some popular worldwide tourist destinations:

In Lisbon, Portugal, the average annual precipitation is 774 mm, characterized by wet winters and dry summers typical of the Mediterranean climate.

Osaka, Japan, experiences 1507 mm of rainfall annually, spread across the year with wetter summers.

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

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

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.

Sea vs. Land Precipitation

The proximity of a location to a large body of water can significantly affect its rainfall patterns:

• Ocean Influence: Coastal regions typically receive more rainfall due to the presence of moisture-laden winds from the ocean. These regions tend to have more humid climates and experience more frequent precipitation, especially in winter.
• Continental Climates: Areas further from the sea, such as inland or continental regions, experience less frequent rainfall and more extreme seasonal variations in precipitation.

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