United States vs United States · 1991–2020
Grass Valley or
Alta Sierra?
Grass Valley peaks in June (84), Alta Sierra in June (84). Below, every month side by side — the better comfort score of the pair is marked, which is a statement about climate only.
| Month | Grass Valley day | Grass Valley rain | Alta Sierra day | Alta Sierra rain | Daylight | Better score |
|---|---|---|---|---|---|---|
| January | 12.1°C | 236 mm | 12.1°C | 236 mm | 9 h 41 / 9 h 42 | level · 5 |
| February | 12.8°C | 228 mm | 12.8°C | 228 mm | 10 h 40 / 10 h 40 | level · 5 |
| March | 14.3°C | 213 mm | 14.3°C | 213 mm | 11 h 50 / 11 h 50 | level · 14 |
| April | 17°C | 113 mm | 17°C | 113 mm | 13 h 10 / 13 h 10 | level · 43 |
| May | 21.6°C | 64 mm | 21.6°C | 64 mm | 14 h 18 / 14 h 18 | level · 74 |
| June | 26.8°C | 19 mm | 26.8°C | 19 mm | 14 h 55 / 14 h 54 | level · 84 |
| July | 31.2°C | 0 mm | 31.2°C | 0 mm | 14 h 40 / 14 h 40 | level · 76 |
| August | 30.9°C | 3 mm | 30.9°C | 3 mm | 13 h 42 / 13 h 42 | level · 75 |
| September | 28°C | 11 mm | 28°C | 11 mm | 12 h 24 / 12 h 24 | level · 80 |
| October | 22.4°C | 63 mm | 22.4°C | 63 mm | 11 h 06 / 11 h 06 | level · 76 |
| November | 15.5°C | 140 mm | 15.5°C | 140 mm | 9 h 58 / 9 h 59 | level · 31 |
| December | 11.5°C | 266 mm | 11.5°C | 266 mm | 9 h 25 / 9 h 26 | level · 5 |
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.