Altoona weather in September 2025

The temperatures in Altoona in September are comfortable with low of 11°C and and high up to 24°C.

You can expect about 3 to 8 days of rain in Altoona during the month of September. It’s a good idea to bring along your umbrella so that you don’t get caught in poor weather.

Our weather forecast can give you a great sense of what weather to expect in Altoona in September 2025.

If you’re planning to visit Altoona in the near future, we highly recommend that you review the 14 day weather forecast for Altoona before you arrive.

Temperatures

24° / 11°

Rainy Days

Snowy Days

Dry Days

Rainfall

125

Sun Hours

9.8

Hrs

Sun	Mon	Tue	Wed	Thu	Fri	Sat
	1 23° /12°	2 25° /12°	3 26° /12°	4 24° /13°	5 24° /12°	6 26° /13°
7 24° /12°	8 25° /11°	9 24° /12°	10 26° /12°	11 25° /13°	12 24° /13°	13 23° /12°
14 24° /11°	15 25° /10°	16 24° /10°	17 22° /11°	18 23° /11°	19 22° /11°	20 24° /9°
21 23° /11°	22 21° /11°	23 18° /9°	24 19° /9°	25 22° /11°	26 20° /11°	27 20° /10°
28 20° /12°	29 18° /10°	30 18° /8°

Explore the weather in Altoona in other months

Altoona annual weather

Month	Temperatures	Rainy Days	Dry Days	Snowy Days	Rainfall	Weather	More details
January	0° / -8°	8	7	17	103 mm	Awful	Altoona in January
February	2° / -6°	8	6	15	119 mm	Awful	Altoona in February
March	8° / -2°	9	13	9	127 mm	Awful	Altoona in March
April	15° / 3°	10	17	3	143 mm	Bad	Altoona in April
May	21° / 9°	11	20	0	170 mm	Ok	Altoona in May
June	26° / 12°	8	22	0	145 mm	Good	Altoona in June
July	29° / 15°	9	22	0	147 mm	Ok	Altoona in July
August	28° / 14°	7	24	0	121 mm	Good	Altoona in August
September	24° / 11°	5	25	0	125 mm	Perfect	Altoona in September
October	17° / 6°	6	24	1	128 mm	Good	Altoona in October
November	9° / -1°	6	19	5	88 mm	Bad	Altoona in November
December	4° / -4°	9	11	11	124 mm	Awful	Altoona in December