Twin Falls weather in September 2025

The temperatures in Twin Falls in September are comfortable with low of 12°C and and high up to 26°C.

The wather in Twin Falls in September can vary between cold and nice weather days. Expect a few rainy days but usually not more than 3.

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

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

Temperatures

26° / 12°

Rainy Days

Snowy Days

Dry Days

Rainfall

Sun Hours

10.4

Hrs

Sun	Mon	Tue	Wed	Thu	Fri	Sat
	1 35° /17°	2 33° /16°	3 31° /16°	4 29° /15°	5 33° /14°	6 35° /15°
7 35° /16°	8 32° /17°	9 30° /14°	10 31° /13°	11 30° /10°	12 27° /11°	13 24° /12°
14 28° /10°	15 26° /11°	16 26° /9°	17 25° /9°	18 26° /9°	19 26° /10°	20 25° /9°
21 20° /6°	22 20° /6°	23 24° /7°	24 28° /7°	25 30° /9°	26 28° /12°	27 28° /8°
28 28° /10°	29 24° /10°	30 18° /7°

Explore the weather in Twin Falls in other months

Twin Falls annual weather

Month	Temperatures	Rainy Days	Dry Days	Snowy Days	Rainfall	Weather	More details
January	2° / -5°	5	14	11	34 mm	Awful	Twin Falls in January
February	4° / -3°	5	13	10	36 mm	Awful	Twin Falls in February
March	10° / 1°	5	20	7	35 mm	Bad	Twin Falls in March
April	14° / 3°	4	23	3	27 mm	Ok	Twin Falls in April
May	19° / 7°	4	26	1	30 mm	Good	Twin Falls in May
June	26° / 12°	2	28	0	18 mm	Perfect	Twin Falls in June
July	33° / 17°	1	31	0	9 mm	Good	Twin Falls in July
August	31° / 16°	1	30	0	12 mm	Good	Twin Falls in August
September	26° / 12°	1	29	0	14 mm	Perfect	Twin Falls in September
October	16° / 6°	1	28	1	21 mm	Good	Twin Falls in October
November	9° / 0°	3	21	6	22 mm	Bad	Twin Falls in November
December	2° / -5°	5	14	12	38 mm	Awful	Twin Falls in December

Temperatures in Twin Falls in September

Rain in Twin Falls in September

Weather in Twin Falls in September - FAQ

What is the average temperature in Twin Falls in September?

The average temperature in Twin Falls in September is 12/26° C.

What is the chance of rain in Twin Falls in September?

On average, there are 1 rainy days in Twin Falls during September.

Weather wise, is September a good time to visit Twin Falls?

The weather in Twin Falls in September is perfect.

Can it snow in Twin Falls in September?

On average, there are 0 snowy days in Twin Falls in September.

More about the weather in Twin Falls