Clear Outside v1.0 - International Weather Forecasts For Astronomers

Saturday 27

First Quarter 50%

11:37

00:42

01 Bad
02 Bad
03 Bad
04 Bad
05 Bad
06 Bad
07 Bad
08 OK
09 Good
10 Bad
11 Bad
12 Bad
13 Bad
14 Bad
15 Bad
16 Bad
17 Bad
18 Bad
19 Bad
20 Bad
21 Bad
22 Bad
23 Bad
00 Bad

Sun - Rise: 08:14, Set: 16:07, Transit: 12:10. Moon - Rise: 11:37, Set: 00:42. Civil Dark: 16:47 - 07:34. Nautical Dark: 17:30 - 06:51. Astro Dark: 18:11 - 06:10

Total Clouds (% Sky Obscured)

96
96
95
90
87
86
75
15
8
71
69
62
66
65
79
87
84
85
80
86
74
86
94
89

Low Clouds (% Sky Obscured)

79
84
81
79
83
82
75
15
8
71
69
62
66
65
79
87
83
85
78
85
74
86
94
88

Medium Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

High Clouds (% Sky Obscured)

5
19
7
8
30
3
0
0
0
0
4
2
2
3
0
0
0
0
0
0
0
0
9
1

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9

Fog (%)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

Precipitation Type

None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None

Precipitation Probability (%)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
1
1
1
0
0

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

14
13
13
14
12
12
12
14
14
15
17
18
19
16
15
17
18
19
18
17
15
14
14
14

Chance of Frost

Temperature (°C)

4
3
3
2
2
2
2
2
2
3
4
5
6
6
6
6
6
6
6
6
6
6
5
5

Feels Like (°C)

1
-0
-1
-2
-1
-2
-2
-2
-2
-2
-1
1
1
3
2
2
0
-1
-1
0
1
2
0
-0

Dew Point (°C)

3
3
2
1
1
1
1
0
-0
-1
1
2
3
3
3
4
4
3
3
4
3
4
3
3

Relative Humidity (%)

96
94
94
94
93
93
89
86
83
79
77
79
79
81
83
91
88
83
83
85
83
88
85
82

Pressure (mb)

1033
1033
1033
1033
1033
1033
1034
1034
1034
1035
1035
1034
1033
1033
1033
1033
1033
1034
1034
1034
1034
1034
1034
1034

Ozone (du)

342
340
338
335
333
332
329
326
323
321
320
319
319
320
320
321
323
326
330
331
329
326
325
325

Sunday 28

Waxing Gibbous 61%

11:50

No Set

01 Bad
02 Bad
03 Bad
04 Bad
05 Bad
06 Bad
07 Bad
08 Bad
09 Bad
10 Bad
11 Bad
12 Bad
13 Bad
14 Bad
15 Bad
16 Bad
17 Bad
18 Bad
19 Bad
20 Bad
21 Bad
22 Bad
23 Bad
00 Bad

Sun - Rise: 08:14, Set: 16:08, Transit: 12:11. Moon - Rise: 11:50, Set: No Set. Civil Dark: 16:48 - 07:34. Nautical Dark: 17:31 - 06:51. Astro Dark: 18:11 - 06:11

Total Clouds (% Sky Obscured)

91
82
83
88
89
90
97
96
91
95
100
91
63
57
68
80
77
91
87
95
86
70
55
71

Low Clouds (% Sky Obscured)

90
78
83
88
89
72
69
64
75
64
70
64
62
56
59
66
75
86
81
93
82
61
50
65

Medium Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

High Clouds (% Sky Obscured)

2
21
26
2
1
56
76
72
57
73
91
55
4
10
27
35
35
35
30
27
22
20
20
13

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9

Fog (%)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

Precipitation Type

None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None

Precipitation Probability (%)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

14
12
11
11
11
11
11
10
10
11
13
13
13
13
13
12
11
11
11
11
11
11
11
10

Chance of Frost

Temperature (°C)

6
5
5
5
5
5
4
4
4
4
5
6
6
6
6
5
5
5
4
4
4
4
4
3

Feels Like (°C)

0
0
1
1
1
1
-0
-1
-0
-1
-1
1
1
1
1
-0
-1
-1
-1
-1
-1
-2
-2
-2

Dew Point (°C)

3
2
4
4
4
4
4
3
3
3
3
3
4
3
2
2
1
1
1
1
0
1
0
-1

Relative Humidity (%)

82
80
90
96
96
98
96
96
96
93
89
85
83
82
78
78
78
78
76
76
76
79
77
77

Pressure (mb)

1034
1034
1034
1033
1033
1033
1033
1034
1034
1033
1033
1033
1032
1031
1031
1030
1030
1030
1030
1030
1030
1029
1029
1029

Ozone (du)

324
324
322
321
320
317
316
315
316
316
317
317
318
320
321
321
320
319
320
321
319
317
317
316

Monday 29

Waxing Gibbous 72%

12:05

02:06

01 Bad
02 Bad
03 Bad
04 Bad
05 Bad
06 Bad
07 Bad
08 Bad
09 Bad
10 Bad
11 Bad
12 Bad
13 Bad
14 Bad
15 Bad
16 Bad
17 Bad
18 Bad
19 Bad
20 Bad
21 Bad
22 Bad
23 Bad
00 Bad

Sun - Rise: 08:14, Set: 16:09, Transit: 12:11. Moon - Rise: 12:05, Set: 02:06. Civil Dark: 16:49 - 07:34. Nautical Dark: 17:32 - 06:51. Astro Dark: 18:12 - 06:11

Total Clouds (% Sky Obscured)

67
62
52
52
58
50
51
54
59
59
87
94
93
94
71
40
46
53
69
85
90
95
100
94

Low Clouds (% Sky Obscured)

66
57
49
49
58
50
51
54
59
59
62
54
51
45
35
33
24
36
57
78
82
87
91
83

Medium Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

High Clouds (% Sky Obscured)

7
1
1
1
0
0
0
0
0
34
77
85
85
80
50
15
29
27
25
20
40
65
85
67

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9

Fog (%)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

Precipitation Type

None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None

Precipitation Probability (%)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
0
0
0

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

10
9
9
8
8
7
7
7
6
7
10
11
11
12
11
10
9
8
8
8
11
10
10
10

Chance of Frost

Temperature (°C)

3
2
2
1
1
1
0
0
0
1
2
3
4
5
5
3
3
2
2
3
4
4
4
4

Feels Like (°C)

-2
-2
-1
-2
-2
-1
-2
-2
-1
-1
-1
-1
-0
0
1
-0
-0
-1
0
-1
-2
-2
-1
-1

Dew Point (°C)

-1
-1
0
-0
-0
-0
-1
-1
0
-0
0
1
2
2
2
2
1
1
1
1
-1
-0
-1
-1

Relative Humidity (%)

76
82
89
91
93
94
94
96
98
91
88
86
83
83
85
89
91
91
93
88
75
75
72
71

Pressure (mb)

1029
1028
1028
1028
1028
1028
1028
1028
1029
1029
1029
1028
1028
1028
1028
1028
1028
1029
1029
1030
1030
1030
1030
1030

Ozone (du)

315
315
314
311
310
311
310
311
311
311
308
306
305
303
303
302
300
298
296
292
287
286
284
280

Tuesday 30

Waxing Gibbous 82%

12:25

03:35

01 Bad
02 Bad
03 Bad
04 Bad
05 Bad
06 Bad
07 Bad
08 OK
09 OK
10 Bad
11 Bad
12 Bad
13 Bad
14 Bad
15 Bad
16 Bad
17 OK
18 OK
19 OK
20 Good
21 Good
22 Good
23 Good
00 Good

Sun - Rise: 08:14, Set: 16:10, Transit: 12:12. Moon - Rise: 12:25, Set: 03:35. Civil Dark: 16:50 - 07:34. Nautical Dark: 17:32 - 06:51. Astro Dark: 18:13 - 06:11

Total Clouds (% Sky Obscured)

89
86
87
90
91
82
46
43
37
45
86
91
90
94
82
69
46
30
24
17
12
7
4
4

Low Clouds (% Sky Obscured)

75
68
69
75
79
77
46
43
37
45
63
71
78
84
65
45
26
5
3
1
1
0
0
1

Medium Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

High Clouds (% Sky Obscured)

53
37
35
26
18
30
46
43
37
33
22
24
27
43
48
43
30
27
21
17
12
6
4
4

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9

Fog (%)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

Precipitation Type

None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None

Precipitation Probability (%)

0
0
0
1
0
2
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

10
9
8
7
7
8
7
6
5
6
7
9
9
8
8
6
5
4
4
4
4
3
3
3

Chance of Frost

Temperature (°C)

4
4
4
4
4
3
3
3
2
3
4
5
5
5
5
4
4
3
2
1
1
0
0
-0

Feels Like (°C)

-1
-1
-1
-0
0
-1
0
1
1
2
2
1
1
1
1
1
1
0
-1
-2
-3
-2
-1
-1

Dew Point (°C)

-1
-1
-1
-1
-1
0
2
2
2
2
1
-0
-1
-1
-1
-1
-1
-1
-1
-2
-2
-2
-2
-2

Relative Humidity (%)

68
69
71
71
71
80
91
94
96
89
80
71
67
67
67
71
72
76
84
83
86
88
89
89

Pressure (mb)

1031
1031
1031
1031
1031
1032
1032
1033
1033
1034
1034
1034
1034
1033
1033
1033
1033
1033
1034
1034
1034
1034
1034
1034

Ozone (du)

279
277
281
278
281
278
279
280
282
282
284
284
286
286
289
291
298
301
302
303
303
303
305
308

Wednesday 31

Waxing Gibbous 91%

12:53

05:07

01 Good
02 Good
03 OK
04 OK
05 Bad
06 Bad
07 Bad
08 Bad
09 Bad
10 OK
11 Good
12 OK
13 OK
14 OK
15 OK
16 OK
17 OK
18 Bad
19 Bad
20 Bad
21 Bad
22 Bad
23 Bad
00 Bad

Sun - Rise: 08:14, Set: 16:11, Transit: 12:12. Moon - Rise: 12:53, Set: 05:07. Civil Dark: 16:51 - 07:34. Nautical Dark: 17:33 - 06:51. Astro Dark: 18:14 - 06:11

Total Clouds (% Sky Obscured)

4
6
21
37
54
71
83
92
65
39
13
26
33
47
44
40
37
52
65
74
69
70
70
75

Low Clouds (% Sky Obscured)

1
1
2
4
8
8
6
5
2
5
5
16
26
37
35
32
28
42
56
71
66
64
63
58

Medium Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
4
8
8
8
12
15
20

High Clouds (% Sky Obscured)

4
5
17
28
40
52
63
73
55
28
6
10
11
9
7
6
7
15
30
56
69
70
70
75

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9

Fog (%)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

Precipitation Type

None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None

Precipitation Probability (%)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

3
3
3
4
4
4
4
4
4
5
5
6
6
6
6
5
4
4
4
4
4
4
5
5

Chance of Frost

Temperature (°C)

-0
-1
-1
-1
-0
0
1
1
2
3
4
5
4
4
4
3
2
1
1
1
1
1
1
1

Feels Like (°C)

-2
-2
-2
-2
-2
-2
-2
-2
-2
-0
2
3
2
2
2
3
3
3
-1
-1
-1
-0
0
0

Dew Point (°C)

-2
-2
-2
-2
-2
-2
-3
-3
-2
-1
0
1
1
0
0
-1
-1
-2
-1
-1
-1
-1
-0
-1

Relative Humidity (%)

89
89
89
89
86
84
76
74
76
77
77
76
76
75
75
77
80
83
86
88
89
89
91
89

Pressure (mb)

1034
1033
1033
1033
1032
1032
1032
1032
1032
1032
1032
1032
1031
1031
1031
1031
1031
1032
1032
1032
1032
1032
1031
1031

Ozone (du)

310
310
310
310
315
314
317
318
317
319
321
323
325
328
330
330
330
330
326
321
317
315
313
311

Thursday 1

Waxing Gibbous 97%

13:35

06:37

01 Bad
02 Bad
03 Bad
04 Bad
05 Bad
06 Bad
07 Bad
08 Bad
09 Bad
10 Bad
11 Bad
12 Bad
13 Bad
14 Bad
15 Bad
16 Bad
17 Bad
18 Bad
19 Bad
20 OK
21 Bad
22 Bad
23 Bad
00 Bad

Sun - Rise: 08:14, Set: 16:12, Transit: 12:13. Moon - Rise: 13:35, Set: 06:37. Civil Dark: 16:52 - 07:34. Nautical Dark: 17:34 - 06:51. Astro Dark: 18:15 - 06:11

Total Clouds (% Sky Obscured)

70
70
75
75
61
65
77
89
92
96
100
99
96
91
86
76
69
59
52
40
51
64
78
79

Low Clouds (% Sky Obscured)

45
38
28
18
9
17
27
35
38
40
43
40
37
32
43
51
60
51
41
32
33
35
37
47

Medium Clouds (% Sky Obscured)

26
28
29
25
20
20
25
25
30
30
35
47
54
62
60
61
56
53
52
40
51
62
65
48

High Clouds (% Sky Obscured)

70
70
75
75
61
65
77
89
92
96
100
68
37
10
10
10
10
14
13
12
7
5
2
0

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9

Fog (%)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

Precipitation Type

None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None

Precipitation Probability (%)

0
0
0
0
0
0
0
0
0
1
3
4
3
0
2
0
0
0
0
0
1
1
0
5

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

5
5
5
5
5
6
5
5
5
6
7
9
9
10
10
10
8
8
9
9
10
9
9
7

Chance of Frost

Temperature (°C)

1
1
1
1
1
1
1
1
1
2
3
5
5
5
5
5
4
4
4
4
4
3
3
3

Feels Like (°C)

-0
-1
-0
0
-1
-1
-1
-1
-1
-2
-2
-2
2
1
1
0
-0
-1
-1
-1
-1
-1
-2
-1

Dew Point (°C)

-1
-1
-1
-1
-2
-2
-3
-2
-3
-2
-1
1
1
2
3
3
2
2
2
2
2
2
2
2

Relative Humidity (%)

89
88
86
86
84
81
80
80
78
77
76
75
76
79
83
85
85
86
86
86
86
89
89
91

Pressure (mb)

1031
1031
1030
1030
1029
1029
1029
1029
1029
1028
1028
1027
1027
1026
1026
1026
1025
1025
1025
1025
1026
1025
1025
1025

Ozone (du)

308
305
302
303
304
305
306
307
308
308
308
308
310
312
315
317
320
323
319
316
313
307
302
297

Friday 2

Waxing Gibbous 100%

14:37

07:54

Sun - Rise: 08:14, Set: 16:13, Transit: 12:13. Moon - Rise: 14:37, Set: 07:54. Civil Dark: 16:53 - 07:34. Nautical Dark: 17:35 - 06:51. Astro Dark: 18:16 - 06:11

Total Clouds (% Sky Obscured)

Low Clouds (% Sky Obscured)

Medium Clouds (% Sky Obscured)

High Clouds (% Sky Obscured)

ISS Passover

Visibility (miles)

Fog (%)

Precipitation Type

Precipitation Probability (%)

Precipitation Amount (mm)

Wind Speed/Direction (mph)

Chance of Frost

Temperature (°C)

Feels Like (°C)

Dew Point (°C)

Relative Humidity (%)

Pressure (mb)

Ozone (du)

Forecast for Twerton, Bath and North East Somerset, United Kingdom (51.36,-2.38)

Generated: 27/12/25 01:41:45. Forecast: 27/12/25 to 02/01/26. Timezone: UTC+0.00