Altoona Weather in September

Altoona in September sees high daytime temperatures of 25°C (77°F) and nighttime lows of 12°C (54°F). Rainfall is fairly high this month at around 95 mm (3.7 in), so pack a rain jacket to stay dry.

Rainfall in Altoona in September

Historically, approximately 10 days this month are expected to have rain, averaging 95 mm (3.7 in). 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 Altoona in September

The temperature in Altoona in September is perfect. Daytime highs reach 25°C (77°F), with nights dropping to 12°C (54°F). Overall, the month follows a fairly predictable daily temperature pattern. Nights cool down to 12°C (54°F), so a light jacket or extra layer is useful once the sun goes down. On the plus side, the cooler nights make for comfortable sleeping conditions.

Sunshine in Altoona in September

The city usually sees around 240 hours of sunlight, indicating many sunny days — a great month for sightseeing.

Wind Speed in Altoona in September

September has wind speeds averaging 3 m/s (6 knots). You can expect comfortable light winds that steadily move flags and feel mild throughout the day. Since this is an average, daily conditions vary from gentle winds to more active breezes.

Our weather planner can help you find worldwide destinations with pleasant weather during this period. September typically offers the best weather for Altoona.

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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 Altoona's climate page.

Altoona Temperature in September

Min Temperature 12°C (54°F)  

Max Temperature 25°C (77°F)  

Chance of Rain 33%  

Precipitation 95 mm (3.7 in)  

Rainy days 10 days  

Humidity 65% *  

Windspeed 3 m/s (6 knots) *  

Sunshine 240 hours *  

Percentage Sunshine 64% *  

* Data from: Des Moines, the United States of America (19 KM, 12 Miles).

What to Wear in Altoona in September

Pleasant temperatures in September 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. Don't forget sun protection, sunglasses, sunscreen, and a hat. These are all good ideas with this much sunshine.

What To Do in Altoona in September

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

Swimming

9/10

Cycling

9/10

Walking

9/10

Barbeque

8/10

Camping

8/10

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 Altoona's climate page.

More climate data for Altoona

Temperature Rainfall Sunshine Humidity Wind Speed

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