Clear Outside v1.0 - International Weather Forecasts For Astronomers

Saturday 27

First Quarter 50%

11:50

00:42

15 OK
16 Bad
17 Bad
18 Bad
19 Bad
20 Bad
21 Bad
22 Bad
23 Bad
00 Bad
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

Sun - Rise: 08:14, Set: 16:07, Transit: 12:11. Moon - Rise: 11:50, Set: 00:42. Civil Dark: 16:47 - 07:34. Nautical Dark: 17:30 - 06:51. Astro Dark: 18:11 - 06:11

Total Clouds (% Sky Obscured)

30
45
56
81
56
69
77
83
92
95
93
93
89
95
94
91
94
92
90
96
87
74
69
55

Low Clouds (% Sky Obscured)

30
45
56
81
56
69
75
83
90
94
90
92
89
95
93
90
78
67
69
69
81
68
57
44

Medium Clouds (% Sky Obscured)

0
4
2
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
4
0
0
7
4
11
39
35
12
21
39
38
34
40
55
82
46
76
92
54
39
59
55

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
1
1
1
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)

18
17
17
20
18
17
15
14
14
13
13
13
12
11
11
11
11
11
11
11
12
13
12
12

Chance of Frost

Temperature (°C)

7
6
6
6
6
6
5
5
5
5
5
5
5
5
5
5
5
4
4
4
5
6
6
6

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

88
88
85
82
83
85
85
85
82
80
80
79
80
83
96
96
94
93
91
89
88
85
83
81

Pressure (mb)

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

Ozone (du)

319
320
321
322
323
322
322
320
321
321
318
316
316
317
317
317
315
314
314
317
320
324
325
326

Sunday 28

Waxing Gibbous 61%

12:05

02:06

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

Sun - Rise: 08:14, Set: 16:08, Transit: 12:11. Moon - Rise: 12:05, Set: 02:06. Civil Dark: 16:48 - 07:34. Nautical Dark: 17:31 - 06:51. Astro Dark: 18:11 - 06:11

Total Clouds (% Sky Obscured)

80
72
88
93
93
92
93
86
82
83
83
66
68
70
81
83
72
81
71
65
48
36
42
54

Low Clouds (% Sky Obscured)

71
46
76
85
83
81
85
80
73
82
75
66
65
70
81
83
72
81
71
65
48
36
42
39

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)

47
32
47
56
62
56
53
55
40
30
33
36
25
16
17
21
3
1
1
1
1
0
0
24

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)

11
10
10
9
9
9
10
10
11
10
10
10
10
11
10
10
9
9
9
9
10
12
12
13

Chance of Frost

Temperature (°C)

6
5
4
4
4
4
4
4
3
3
3
3
2
2
1
1
1
1
1
2
3
4
5
5

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

79
79
79
80
83
82
79
77
77
74
73
72
73
73
73
71
71
71
71
73
73
71
71
72

Pressure (mb)

1031
1030
1030
1030
1030
1030
1030
1029
1029
1029
1028
1028
1028
1028
1027
1027
1027
1028
1028
1028
1028
1027
1027
1027

Ozone (du)

327
324
323
322
321
315
312
310
307
307
307
307
306
306
304
304
305
304
303
301
300
300
296
295

Monday 29

Waxing Gibbous 72%

12:25

03:35

15 Bad
16 Bad
17 OK
18 Bad
19 Bad
20 Bad
21 Bad
22 Bad
23 Bad
00 Bad
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 OK
14 OK

Sun - Rise: 08:14, Set: 16:09, Transit: 12:12. Moon - Rise: 12:25, Set: 03:35. Civil Dark: 16:49 - 07:34. Nautical Dark: 17:32 - 06:51. Astro Dark: 18:12 - 06:11

Total Clouds (% Sky Obscured)

48
59
32
69
66
82
89
90
85
91
88
93
88
99
95
88
85
75
63
64
62
52
43
20

Low Clouds (% Sky Obscured)

14
39
16
60
66
82
89
90
81
87
84
93
85
98
94
80
83
75
57
62
58
49
35
12

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)

30
27
16
18
22
6
7
19
12
17
24
20
17
12
30
36
27
18
11
3
3
5
6
7

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
1
0
1
1
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)

12
11
9
9
10
11
10
9
10
9
10
10
10
12
12
13
12
11
10
10
11
11
10
10

Chance of Frost

Temperature (°C)

5
4
3
3
3
3
3
4
4
4
4
4
4
4
4
4
4
3
3
4
4
5
5
5

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

71
66
72
76
72
72
72
71
72
68
73
77
68
63
61
60
59
58
60
61
60
61
62
70

Pressure (mb)

1027
1027
1027
1028
1029
1029
1029
1029
1030
1030
1030
1031
1031
1031
1031
1032
1032
1033
1034
1034
1034
1034
1034
1033

Ozone (du)

295
293
292
289
288
286
283
281
282
279
281
282
284
284
285
284
285
283
285
287
288
292
294
296

Tuesday 30

Waxing Gibbous 82%

12:53

05:07

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

Sun - Rise: 08:14, Set: 16:10, Transit: 12:12. Moon - Rise: 12:53, Set: 05:07. Civil Dark: 16:50 - 07:34. Nautical Dark: 17:32 - 06:51. Astro Dark: 18:13 - 06:11

Total Clouds (% Sky Obscured)

19
22
29
16
12
10
3
4
3
4
4
5
5
5
4
7
11
15
14
10
5
9
9
14

Low Clouds (% Sky Obscured)

12
13
14
10
5
1
0
0
0
0
1
1
1
1
1
7
11
15
14
8
4
9
8
12

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
9
14
7
7
7
3
2
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
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
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
8
7
6
6
5
4
4
4
3
3
3
3
3
3
3
3
3
4
4
4
6
6
6

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

73
82
88
89
91
91
92
91
92
92
92
92
92
92
92
92
89
91
86
80
73
69
68
69

Pressure (mb)

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

Ozone (du)

297
297
300
303
306
309
309
312
313
315
317
318
320
322
323
324
322
318
316
315
316
317
317
318

Wednesday 31

Waxing Gibbous 91%

13:35

06:37

15 Good
16 Good
17 Good
18 OK
19 OK
20 OK
21 OK
22 Bad
23 Bad
00 Bad
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 OK

Sun - Rise: 08:14, Set: 16:11, Transit: 12:13. Moon - Rise: 13:35, Set: 06:37. Civil Dark: 16:51 - 07:34. Nautical Dark: 17:33 - 06:51. Astro Dark: 18:14 - 06:11

Total Clouds (% Sky Obscured)

14
15
15
23
30
34
38
49
60
56
57
49
55
62
70
97
94
92
82
71
61
54
47
40

Low Clouds (% Sky Obscured)

13
14
14
21
27
34
38
48
58
54
52
46
52
58
62
76
77
77
73
71
61
54
44
31

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)

0
0
0
0
0
0
0
2
2
2
2
13
14
12
22
68
72
63
41
21
1
1
2
2

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
2
0
0
1
2
2

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
4
3
4
4
4
5
5
5
6
7
7
8
8
8
6
6
6
8
10
12
12
13

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

76
80
84
88
89
91
92
94
93
81
80
85
93
83
80
80
81
83
85
82
80
78
80
82

Pressure (mb)

1030
1029
1029
1029
1029
1028
1028
1027
1027
1026
1025
1025
1024
1023
1023
1022
1022
1022
1022
1021
1020
1020
1019
1018

Ozone (du)

320
322
321
321
323
324
324
324
320
318
317
320
319
319
317
318
316
314
312
314
316
318
320
322

Thursday 1

Waxing Gibbous 97%

14:37

07:54

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

Sun - Rise: 08:14, Set: 16:12, Transit: 12:13. Moon - Rise: 14:37, Set: 07:54. Civil Dark: 16:52 - 07:34. Nautical Dark: 17:34 - 06:51. Astro Dark: 18:15 - 06:11

Total Clouds (% Sky Obscured)

60
77
96
95
92
90
76
62
47
41
33
25
30
35
38
41
44
41
20
7
0
15
28
44

Low Clouds (% Sky Obscured)

41
51
62
60
61
54
48
42
39
32
21
10
10
12
13
11
7
2
1
0
0
15
28
41

Medium Clouds (% Sky Obscured)

15
30
25
14
14
9
7
6
4
3
1
0
0
0
0
0
0
0
0
0
0
0
0
0

High Clouds (% Sky Obscured)

27
47
76
74
60
44
29
15
0
0
0
0
0
1
5
9
13
16
9
4
0
0
0
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 (%)

10
14
17
17
16
13
28
33
34
27
19
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
14
13
12
12
12
12
10
9
8
8
8
8
8
8
8
8
8
8
9
10
11
11
11

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

85
86
89
91
91
91
89
91
93
91
93
91
91
91
89
89
88
83
81
77
73
69
69
69

Pressure (mb)

1017
1017
1017
1016
1016
1016
1016
1016
1016
1016
1016
1016
1017
1017
1017
1017
1018
1019
1019
1019
1020
1020
1020
1020

Ozone (du)

324
324
325
325
327
328
330
332
333
335
334
332
331
323
314
306
302
298
294
293
291
290
289
288

Friday 2

Waxing Gibbous 100%

No Rise

08:50

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

Sun - Rise: 08:13, Set: 16:13, Transit: 12:14. Moon - Rise: No Rise, Set: 08:50. Civil Dark: 16:53 - 07:34. Nautical Dark: 17:35 - 06:51. Astro Dark: 18:16 - 06:11

Total Clouds (% Sky Obscured)

37
27
17
10
10
11
12
19
31
37
49
56
50
43
13
7
6
5
5
7
9

Low Clouds (% Sky Obscured)

29
14
0
9
10
11
12
19
31
36
40
41
40
35
13
7
6
5
5
7
9

Medium Clouds (% Sky Obscured)

2
5
7
5
2
0
6
14
21
18
18
15
10
6
2
5
6
5
5
4
0

High Clouds (% Sky Obscured)

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

Fog (%)

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

Precipitation Probability (%)

0
0
0
3
5
6
6
4
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

Wind Speed/Direction (mph)

11
10
8
7
7
7
7
6
5
4
4
4
4
4
4
4
4
3
3
4
4

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

2
2
1
1
-2
-1
-1
-2
-2
-2
-2
-2
-2
-2
-2
-2
-2
-2
-1
-1
-1

Dew Point (°C)

-2
-2
-2
-2
-3
-3
-3
-3
-3
-4
-4
-4
-4
-3
-3
-3
-3
-3
-3
-2
-2

Relative Humidity (%)

69
73
77
81
80
80
80
81
81
81
81
83
83
84
84
84
83
83
81
77
73

Pressure (mb)

1021
1021
1021
1022
1022
1022
1022
1023
1023
1023
1023
1023
1023
1023
1024
1024
1024
1024
1024
1024
1024

Ozone (du)

286
287
289
290
290
291
292
289
285
282
284
287
289
295
301
307
311
315
319
320
320

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

Generated: 27/12/25 15:03:12. Forecast: 27/12/25 to 02/01/26. Timezone: UTC+0.00