2006 Salt Lake City, Utah - For DSO Observers - Approx. Number of Moonless Hours Between Astronomical Twilight and Midnight (Mountain Standard Time)
d | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
1 | 5 | 3 | 4 | 1 | 1 | 0 | 1 | 1 | 1 | 1 | 0 | 0 |
2 | 4 | 1 | 2 | 1 | 0 | 0 | 1 | 1 | 1 | 0 | 0 | 0 |
3 | 3 | 1 | 1 | 0 | 0 | 0 | 1 | 1 | 0 | 0 | 0 | 0 |
4 | 1 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
5 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
6 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
7 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 |
8 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 2 |
9 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 2 | 3 |
10 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 3 | 4 |
11 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 5 | 5 |
12 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 2 | 6 | 6 |
13 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 2 | 4 | 6 | 6 |
14 | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 1 | 3 | 5 | 6 | 6 |
15 | 0 | 1 | 0 | 1 | 1 | 1 | 1 | 1 | 4 | 5 | 6 | 6 |
16 | 0 | 2 | 0 | 2 | 2 | 2 | 2 | 2 | 4 | 5 | 6 | 6 |
17 | 1 | 3 | 1 | 3 | 3 | 2 | 2 | 3 | 4 | 5 | 6 | 6 |
18 | 2 | 4 | 2 | 4 | 3 | 2 | 3 | 3 | 4 | 5 | 6 | 6 |
19 | 3 | 5 | 3 | 4 | 3 | 2 | 3 | 3 | 4 | 5 | 6 | 6 |
20 | 4 | 5 | 4 | 4 | 3 | 2 | 3 | 4 | 4 | 5 | 6 | 6 |
21 | 5 | 5 | 4 | 4 | 3 | 2 | 3 | 4 | 5 | 5 | 6 | 6 |
22 | 5 | 5 | 4 | 4 | 3 | 2 | 3 | 4 | 5 | 5 | 6 | 5 |
23 | 5 | 5 | 4 | 4 | 3 | 2 | 3 | 4 | 5 | 5 | 5 | 4 |
24 | 5 | 5 | 4 | 4 | 3 | 2 | 3 | 4 | 5 | 5 | 4 | 3 |
25 | 5 | 5 | 4 | 3 | 3 | 2 | 3 | 4 | 5 | 5 | 3 | 1 |
26 | 5 | 5 | 4 | 3 | 3 | 2 | 3 | 4 | 4 | 4 | 2 | 1 |
27 | 5 | 5 | 4 | 3 | 3 | 2 | 3 | 4 | 4 | 3 | 1 | 0 |
28 | 5 | 5 | 4 | 3 | 2 | 2 | 3 | 3 | 3 | 2 | 1 | 0 |
29 | 5 | | 4 | 2 | 2 | 2 | 3 | 3 | 2 | 1 | 0 | 0 |
30 | 5 | | 4 | 1 | 1 | 1 | 2 | 2 | 1 | 1 | 0 | 0 |
31 | 4 | | 2 | | 1 | | 2 | 2 | | 0 | | 0 |
Ave Min Mo Temp F | 19 | 25 | 31 | 38 | 46 | 55 | 64 | 62 | 51 | 40 | 31 | 22 |
Mean Clear Days | 5 | 5 | 7 | 7 | 9 | 14 | 17 | 16 | 17 | 14 | 9 | 6 |
Mean Partly Cldy Days | 7 | 7 | 8 | 9 | 10 | 10 | 10 | 11 | 8 | 8 | 7 | 7 |
Mean Cldy Days | 19 | 16 | 16 | 14 | 12 | 6 | 4 | 4 | 5 | 9 | 14 | 18 |
% Clear | 16% | 18% | 23% | 23% | 29% | 47% | 55% | 52% | 57% | 45% | 30% | 19% |
% Partly Cldy | 23% | 25% | 26% | 30% | 32% | 33% | 32% | 35% | 27% | 26% | 23% | 23% |
% Cldy | 61% | 57% | 52% | 47% | 39% | 20% | 13% | 13% | 17% | 29% | 47% | 58% |