Cedar Rapids in September
7.9out of 10
Yes, a good time to go
Warm and comfortable: highs around 24°C. Frequent rain: about 9 rainy days.
24°CAvg high
13°CAvg low
9Rainy days (100 mm)
12:16 hDaylight
06:53Sunrise · 19:09 Sunset
Why this score
- Warm and comfortable: highs around 24°C
- Frequent rain: about 9 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?
Rain in September varies a lot between years (±3.3 rainy days), so check the forecast closer to your trip. Averages cover 30 years (1991–2020). Individual days can differ a lot.
Year at a glance
Weather by month
| Month | Avg high | Avg low | Rainfall | Rainy days | Humidity | Sunshine | Score |
|---|---|---|---|---|---|---|---|
| January | -2°C | -10°C | 37 mm | 7 | – | – | 4.2 |
| February | 1°C | -8°C | 43 mm | 6 | – | – | 4.2 |
| March | 9°C | -2°C | 65 mm | 9 | – | – | 5.5 |
| April | 16°C | 5°C | 111 mm | 12 | – | – | 6.5 |
| May | 22°C | 11°C | 127 mm | 13 | – | – | 7.1 |
| June | 27°C | 17°C | 129 mm | 12 | – | – | 7.2 |
| July | 29°C | 19°C | 101 mm | 10 | – | – | 7.7 |
| August | 27°C | 17°C | 94 mm | 10 | – | – | 7.8 |
| September | 24°C | 13°C | 100 mm | 9 | – | – | 7.9 |
| October | 17°C | 6°C | 74 mm | 9 | – | – | 7.1 |
| November | 9°C | 0°C | 59 mm | 8 | – | – | 5.7 |
| December | 1°C | -7°C | 46 mm | 7 | – | – | 4.2 |
Frequently asked questions
How hot is Cedar Rapids in September?
Daytime highs average 24°C and nights about 13°C.
When is the best time to visit Cedar Rapids?
The best months are September, August, July.