Best Time to Visit Granite City: Month-by-Month Guide
Best months for Granite City: September, October, August.
- Best months for Granite City: September, October, August.
- Peak season is July, August, June. Expect higher prices and more visitors (estimated from the climate, not from visitor counts).
- Shoulder season: April, May, September, October. Good weather without the busiest period.
- Wettest months: May, April, June.
- The least pleasant month is January (score 4.8).
Year at a glance
Weather by month
| Month | Avg high | Avg low | Rainfall | Rainy days | Humidity | Sunshine | Score |
|---|---|---|---|---|---|---|---|
| January | 5°C | -4°C | 70 mm | 8 | – | – | 4.8 |
| February | 8°C | -2°C | 63 mm | 7 | – | – | 5.5 |
| March | 14°C | 3°C | 94 mm | 10 | – | – | 6.3 |
| April | 20°C | 9°C | 116 mm | 11 | – | – | 7.1 |
| May | 25°C | 15°C | 127 mm | 13 | – | – | 7.1 |
| June | 29°C | 20°C | 106 mm | 11 | – | – | 7.4 |
| July | 31°C | 22°C | 86 mm | 10 | – | – | 7.1 |
| August | 30°C | 20°C | 75 mm | 9 | – | – | 7.5 |
| September | 27°C | 16°C | 84 mm | 7 | – | – | 8.1 |
| October | 20°C | 9°C | 87 mm | 8 | – | – | 7.7 |
| November | 13°C | 3°C | 93 mm | 9 | – | – | 6.4 |
| December | 7°C | -1°C | 65 mm | 8 | – | – | 5.2 |
Frequently asked questions
When is the best time to visit Granite City?
The best months are September, October, August.
When is the rainy season in Granite City?
The wettest months are May, April, June.