Alton Weather in April

Alton in April sees pleasant daytime temperatures of 19°C (66°F) and nighttime lows of 8°C (46°F). With the highest rainfall of the year it is wise to pack an umbrella and expect frequent showers.

Rainfall in Alton in April

With this being the wettest month, keeping an umbrella on hand might save you from getting wet from a sudden shower. You can expect rain on around 11 days based on historical patterns, with 115 mm (4.5 in) average for the month. When showers do arrive, they tend to be on the heavier side. Worth being prepared even if rain days are not that numerous.

Temperature in Alton in April

Expect highs of 19°C (66°F) in Alton in April, with nights dropping to around 8°C (46°F). Conditions are often most pleasant around the middle of the day. At 8°C (46°F) overnight, it gets properly cold after dark. On the bright side, cold nights tend to make for excellent sleeping conditions.

Sunshine in Alton in April

Expect a lot of sunshine this month, with about 225 hours of sun. These sunny conditions add to the overall experience.

Should you favor a climate that's both dry and comfortably warm, September and October typically offer the most agreeable circumstances. If you're seeking pleasant, dry and sunny weather somewhere else in the world, our weather planner can help you explore other options.

Select a Month

Check the conditions for any month of the year.

• January
• February
• March
• April

• May
• June
• July
• August

• September
• October
• November
• December

For a detailed overview over the year and the best time to visit the United States of America, check out our Alton's climate page.

Alton Temperature in April

Min Temperature 8°C (46°F)  

Max Temperature 19°C (66°F)  

Chance of Rain 36%  

Precipitation 115 mm (4.5 in)  

Rainy days 11 days  

Humidity 63% *  

Sunshine 225 hours *  

Percentage Sunshine 56% *  

* Data from: St. Louis, the United States of America (29 KM, 18 Miles).

What to Wear in Alton in April

Pleasant temperatures in April mean you can pack light but flexibel pieces. Think cotton t-shirts, comfortable walking shorts, and one warmer layer for evenings. A light sweater or denim jacket works well. Prepare for significant rainfall with proper waterproof clothing and shoes. And with plenty of sunshine hours, don’t forget sunglasses, sunscreen, and maybe a sun hat.

What To Do in Alton in April

We rated the following activities from 1 (least suitable) to 10 (best) to do.

Cycling

9/10

Walking

9/10

Camping

3/10

Outdoor sports

9/10

Select a Month

Check the conditions for any month of the year.

• January
• February
• March
• April

• May
• June
• July
• August

• September
• October
• November
• December

For a detailed overview over the year and the best time to visit the United States of America, check out our Alton's climate page.

More climate data for Alton

Temperature Rainfall Sunshine Humidity

See the full Alton climate overview or explore weather in the United States of America.