Sidney (MT) Monthly Rainfall & Precipitation

This page shows both the average monthly rainfall and the number of rainy days in Sidney, Montana, United States of America. These values are calculated using 30 years of data (1990–2020) to ensure accuracy. Now, let's break down all the details for a clearer picture.

Sidney maintains relatively dry conditions year-round, with an average annual precipitation of 413 mm (16 in). However, it does have a distinct dry season during certain months, creating distinct seasonal patterns visible in our monthly breakdown below.

Monthly Precipitation Levels

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

The seasons in Sidney, bring significant changes in precipitation. The wettest month, May, receives moderate rainfall, with an average of 82 mm (3.2 in) of precipitation. This rainfall is distributed across 12 rainy days.

In contrast, the driest month, February, experiences much less snowfall, totaling 8.9 mm (0.4 in) over 5 snowy days. These distinct seasonal differences provide diverse experiences throughout the year.

May, the wettest month, has a maximum daytime temperature of 20°C (68°F). During the driest month February you can expect a temperature of -2°C (28°F). For more detailed insights into the city's temperatures, visit our Sidney Temperature page.

Sidney's average annual precipitation is 413 mm (16 in). Let's compare this to some popular worldwide tourist destinations:

New York City, USA, receives 1276 mm (50 in) of rainfall annually, with precipitation evenly distributed throughout the year.

In Shanghai, China, the annual average precipitation is 1347 mm (53 in), with a humid subtropical climate.

Perth, Australia, receives 565 mm (22 in) of rainfall annually, mostly during the winter months.

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.

Rainy Seasons: Many parts of the world have well-defined wet seasons where precipitation is distinctly higher. These are normally accompanied by lush vegetation and temperature patterns.

Dry Seasons: In areas where the climate is either desert or Mediterranean, the amount of precipitation is drastically reduced, leading to a shortage of water and arid conditions.

• "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 (15 inches) wide and 20 cm (7.9 inches) 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 (103 feet) fell during the winter of 1972.

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