United States vs United States · 1991–2020
Boulder or
Louisville?
Boulder peaks in September (79), Louisville in September (79). Below, every month side by side — the better comfort score of the pair is marked, which is a statement about climate only.
| Month | Boulder day | Boulder rain | Louisville day | Louisville rain | Daylight | Better score |
|---|---|---|---|---|---|---|
| January | 8.3°C | 20 mm | 8.3°C | 20 mm | 9 h 37 / 9 h 37 | level · 11 |
| February | 8.9°C | 25 mm | 8.9°C | 25 mm | 10 h 37 / 10 h 37 | level · 12 |
| March | 13.7°C | 51 mm | 13.7°C | 51 mm | 11 h 49 / 11 h 49 | level · 32 |
| April | 17°C | 77 mm | 17°C | 77 mm | 13 h 12 / 13 h 12 | level · 43 |
| May | 21.7°C | 81 mm | 21.7°C | 81 mm | 14 h 22 / 14 h 22 | level · 65 |
| June | 27.9°C | 49 mm | 27.9°C | 49 mm | 15 h / 14 h 59 | level · 75 |
| July | 31.1°C | 47 mm | 31.1°C | 47 mm | 14 h 45 / 14 h 45 | level · 70 |
| August | 30°C | 43 mm | 30°C | 43 mm | 13 h 45 / 13 h 45 | level · 74 |
| September | 25.9°C | 53 mm | 25.9°C | 53 mm | 12 h 24 / 12 h 24 | level · 79 |
| October | 18.8°C | 41 mm | 18.8°C | 41 mm | 11 h 04 / 11 h 04 | level · 59 |
| November | 12.4°C | 30 mm | 12.4°C | 30 mm | 9 h 55 / 9 h 55 | level · 30 |
| December | 7.9°C | 21 mm | 7.9°C | 21 mm | 9 h 20 / 9 h 21 | level · 9 |
Comfort scores compare climate and nothing else — not cost, crowds, flights or what there is to do when you arrive. Two places can also read stations of very different quality: check the distance in the caption above before treating a one-point gap as meaningful.