United States vs United States · 1991–2020
Potomac or
Gaithersburg?
Potomac peaks in September (83), Gaithersburg in September (83). Below, every month side by side — the better comfort score of the pair is marked, which is a statement about climate only.
| Month | Potomac day | Potomac rain | Gaithersburg day | Gaithersburg rain | Daylight | Better score |
|---|---|---|---|---|---|---|
| January | 5.7°C | 82 mm | 5.7°C | 82 mm | 9 h 42 / 9 h 42 | level · 5 |
| February | 7.1°C | 61 mm | 7.1°C | 61 mm | 10 h 40 / 10 h 40 | level · 6 |
| March | 11.9°C | 102 mm | 11.9°C | 102 mm | 11 h 50 / 11 h 50 | level · 21 |
| April | 18.5°C | 78 mm | 18.5°C | 78 mm | 13 h 10 / 13 h 10 | level · 57 |
| May | 23.2°C | 88 mm | 23.2°C | 88 mm | 14 h 17 / 14 h 18 | level · 79 |
| June | 27.6°C | 97 mm | 27.6°C | 97 mm | 14 h 53 / 14 h 54 | level · 71 |
| July | 30.1°C | 89 mm | 30.1°C | 89 mm | 14 h 39 / 14 h 40 | level · 59 |
| August | 29.2°C | 74 mm | 29.2°C | 74 mm | 13 h 41 / 13 h 42 | level · 67 |
| September | 24.7°C | 108 mm | 24.7°C | 108 mm | 12 h 24 / 12 h 24 | level · 83 |
| October | 18.6°C | 78 mm | 18.6°C | 78 mm | 11 h 06 / 11 h 06 | level · 61 |
| November | 13.2°C | 91 mm | 13.2°C | 91 mm | 9 h 59 / 9 h 59 | level · 32 |
| December | 7.6°C | 76 mm | 7.6°C | 76 mm | 9 h 26 / 9 h 26 | level · 7 |
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.