Big Delta (AK) Monthly Rainfall & Precipitation

This page shows both the average monthly rainfall and the number of rainy days in Big Delta, Alaska, United States of America. Long-term data from 1990 to 2020 was used to calculate these averages. Let's now guide you through the details for a complete overview.

Generally, Big Delta has a moderate amount of precipitation, averaging 540 mm (21 in) of rain/snowfall annually. However, it does experience a distinct dry season during certain months. Take a look at our detailed charts below to see the seasonal variation.

Monthly Precipitation Levels

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

Significant seasonal changes in precipitation occur throughout the year. During the wettest month, July receives substantial rainfall, averaging 101 mm (4 in) of precipitation, recorded across 13 rainy days.

In contrast, the driest month, March brings less snowfall, with 18 mm (0.7 in) over 4 snowy days.

July, the wettest month, has a maximum daytime temperature of 21°C (70°F). During the driest month March you can expect a temperature of -3°C (27°F). For more detailed insights into the city's temperatures, visit our Big Delta Temperature page.

Big Delta's average annual precipitation is 540 mm (21 in). Let's compare this to some popular worldwide tourist destinations:

In Lisbon, Portugal, the average annual precipitation is 774 mm (30 in), characterized by wet winters and dry summers typical of the Mediterranean climate.

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.

Ho Chi Minh City, Vietnam, receives 1955 mm (77 in) of annual rainfall, with a pronounced wet season from May to November, typical of its tropical monsoon climate.

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.

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