Average Rainy - Precipitation days in Alton

Alton sees 195 days of precipitation annually, totaling to 870 mm of rain/snow. Learn more about it on this page.

Monthly Distribution of Rainy Days

June is usually the wettest with 82 mm of rain over 15 rainy days, whereas March averages 62 mm during its 18 rainy days.

Amsterdam Precipitation Days Compared World Wide

Alton's average annual precipitation falls over 195 days. Let's compare this to some popular worldwide tourist destinations:

Las Vegas, USA, gets about 26 precipitation days annually, which is typical for its arid desert climate.

Singapore, Singapore, records about 175 precipitation days per year, with rain spread fairly evenly throughout the year.

Seville, Spain, experiences 103 precipitation days annually, with wet winters and dry summers typical of southern Spain.

Every year, the city of New York, USA, records about 130 precipitation days, with rainfall evenly distributed throughout the year.

Beijing, China, averages 72 precipitation days annually, concentrated in the summer months.

In Tokyo, Japan, the city sees around 181 precipitation days annually, with significant summer rains due to typhoon season.

Rain Facts From Around the Globe

Let’s explore more fascinating precipitation records:

• Tutunendo, Colombia, gets about 340 days of rain every year, which arguably makes it the wettest place in the world.
• On Réunion Island, a tropical cyclone generated 1825 mm in just 24 hours.
• Singapore receives thunder on 167 days in the year and is considered one of the most thunderous cities in the world.
• The smallest drops that fall are called drizzle drops, and they have a diameter of 0.5 mm.
• Some heavy storms generate "diamond dust," which consists of very small ice crystals that float in the air.

For more detailed information about rainfall patterns in Alton, visit our Rainfall & Precipitation page.