Alton Weather in June

June in Alton averages 29°C (84°F) during the day and 19°C (66°F) at night. Quite a bit of rainfall is typical this month, with around 104 mm (4.1 in) on average. An umbrella is a good idea.

Rainfall in Alton in June

Past climate data indicates that roughly 12 days will see rain, totalling around 104 mm (4.1 in) for the month. The rain this month tends to fall in heavier spells rather than light drizzle. When it rains, showers can be significant.

Temperature in Alton in June

Alton in June gets highs of 29°C (84°F) during the day and drops to 19°C (66°F) at night. This kind of day-to-night contrast is typical for this time of year. With overnight lows of 19°C (66°F), evenings can feel noticeably cooler than the daytime. An extra layer is a good idea, though the cool air makes for a good night's sleep.

Sunshine in Alton in June

With approximately 293 hours of sunshine, the days are filled with clear skies. It makes it a perfect month for being outside.

If your ideal day consists of dry skies and pleasant temperatures, September and October typically offer the best circumstances for Alton.

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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 June

Min Temperature 19°C (66°F)  

Max Temperature 29°C (84°F)  

Chance of Rain 39%  

Precipitation 104 mm (4.1 in)  

Rainy days 12 days  

Humidity 67% *  

Sunshine 293 hours *  

Percentage Sunshine 66% *  

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

What to Wear in Alton in June

Warm but pleasant conditions in Alton in June. Focus on lightweight, maybe with natural fabrics, cotton blend shirts, comfortable shorts, and breathable footwear. A light cover-up for sun protection is smart too. Expect heavy rainfall, so bring good rain protection and waterproof bags. Don't forget sun protection, sunglasses, sunscreen, and a hat. These are all good ideas with this much sunshine.

What To Do in Alton in June

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

Swimming

9/10

Cycling

7/10

Walking

7/10

Camping

6/10

Outdoor sports

7/10

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.