Norwalk in September
7.9out of 10
Yes, a good time to go
Warm and comfortable: highs around 23°C. Frequent rain: about 9 rainy days.
23°CAvg high
15°CAvg low
9Rainy days (80 mm)
12:16 hDaylight
07:17Sunrise · 19:33 Sunset
Why this score
- Warm and comfortable: highs around 23°C
- Frequent rain: about 9 rainy days
What to wear and pack
- T-shirts and light layers
- 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 | 1°C | -6°C | 83 mm | 12 | – | – | 3.6 |
| February | 3°C | -5°C | 67 mm | 10 | – | – | 4.2 |
| March | 7°C | -1°C | 89 mm | 12 | – | – | 4.9 |
| April | 14°C | 6°C | 110 mm | 13 | – | – | 6.0 |
| May | 21°C | 12°C | 107 mm | 13 | – | – | 7.0 |
| June | 25°C | 18°C | 108 mm | 13 | – | – | 7.2 |
| July | 27°C | 20°C | 93 mm | 12 | – | – | 7.4 |
| August | 26°C | 19°C | 90 mm | 11 | – | – | 7.5 |
| September | 23°C | 15°C | 80 mm | 9 | – | – | 7.9 |
| October | 17°C | 9°C | 81 mm | 11 | – | – | 6.8 |
| November | 10°C | 3°C | 87 mm | 11 | – | – | 5.6 |
| December | 4°C | -2°C | 86 mm | 11 | – | – | 4.3 |
Frequently asked questions
How hot is Norwalk in September?
Daytime highs average 23°C and nights about 15°C.
When is the best time to visit Norwalk?
The best months are September, August, July.