Arnold Weather in April

April in Arnold averages 20°C (68°F) during the day and 8°C (46°F) at night. It is the wettest month of the year, with 142 mm (5.6 in) of rainfall on average, so waterproof gear is a must.

Rainfall in Arnold in April

With the most rainfall occurring this month, it's practical to keep an umbrella handy for sudden downpours. Historically, April sees about 12 days of rain, with a monthly average of 142 mm (5.6 in). The rain this month tends to fall in heavier spells rather than light drizzle. When it rains, showers can be significant.

Temperature in Arnold in April

Temperatures in Arnold in April top out at 20°C (68°F) and drop to 8°C (46°F) overnight. Even when the weather is stable, mornings and evenings can still feel distinctly cool. With lows around 8°C (46°F), nights are cold. The upside is that cool, crisp nights are often the best for a deep sleep.

Sunshine in Arnold in April

The city usually sees around 225 hours of sunlight, indicating many sunny days — a great month for sightseeing.

If you prefer dry days with pleasant temperatures, October typically offers the best circumstances. If you're seeking pleasant, dry and sunny weather somewhere else in the world, our weather planner can help you explore other options.

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• January
• February
• March
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• May
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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 Arnold's climate page.

Arnold Temperature in April

Min Temperature 8°C (46°F)  

Max Temperature 20°C (68°F)  

Chance of Rain 40%  

Precipitation 142 mm (5.6 in)  

Rainy days 12 days  

Humidity 63% *  

Sunshine 225 hours *  

Percentage Sunshine 56% *  

* Data from: St. Louis, the United States of America (26 KM, 16 Miles).

What to Wear in Arnold in April

Comfortable temperatures call for an easy wardrobe in April. Pack summer basics like t-shirts and shorts, but include a light jacket for cooler moments. A pair of comfortable walking shoes is essential. 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 Arnold 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 Arnold's climate page.

More climate data for Arnold

Temperature Rainfall Sunshine Humidity

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