Ankeny in September

8.0out of 10

Yes, a good time to go

Warm and comfortable: highs around 25°C. Some rain: about 8 rainy days.

25°CAvg high
13°CAvg low
8Rainy days (91 mm)
12:16 hDaylight
07:01Sunrise · 19:17 Sunset

Why this score

  • Warm and comfortable: highs around 25°C
  • Some rain: about 8 rainy days

What to wear and pack

  • T-shirts and light layers
  • A light jacket for cooler evenings
  • Rain jacket or compact umbrella

How reliable is the forecast?

Rainfall in September is fairly consistent from year to year (2.7 days). Averages cover 30 years (1991–2020). Individual days can differ a lot.

Year at a glance

-1° -10° J 2° -8° F 9° -1° M 17° 5° A 23° 12° M 27° 17° J 29° 19° J 28° 18° A 25° 13° S 17° 7° O 9° 0° N 2° -7° D Rainy days

Weather by month

MonthAvg highAvg lowRainfall Rainy daysHumiditySunshine Score
January -1°C-10°C30 mm 7– – 4.2
February 2°C-8°C38 mm 7– – 4.3
March 9°C-1°C66 mm 9– – 5.6
April 17°C5°C111 mm 11– – 6.6
May 23°C12°C141 mm 14– – 7.0
June 27°C17°C127 mm 11– – 7.4
July 29°C19°C98 mm 9– – 7.7
August 28°C18°C101 mm 10– – 7.7
September 25°C13°C91 mm 8– – 8.0
October 17°C7°C74 mm 8– – 7.3
November 9°C0°C54 mm 7– – 5.9
December 2°C-7°C41 mm 6– – 4.4

Frequently asked questions

How hot is Ankeny in September?

Daytime highs average 25°C and nights about 13°C.

When is the best time to visit Ankeny?

The best months are September, July, August, June.