Clear Outside v1.0 - International Weather Forecasts For Astronomers

Wednesday 31

Waxing Gibbous 90%

No Rise

No Set

02 OK
03 OK
04 OK
05 OK
06 OK
07 OK
08 OK
09 OK
10 OK
11 OK
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
01 Bad

Sun - Rise: 11:28, Set: 13:05, Transit: 12:16. Moon - Rise: No Rise, Set: No Set. Civil Dark: 15:11 - 09:22. Nautical Dark: 16:34 - 07:59. Astro Dark: 17:42 - 06:50

Total Clouds (% Sky Obscured)

3
4
4
9
3
1
2
4
6
3
4
4
4
5
5
5
54
57
63
65
68
69
74
76

Low Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
54
57
62
62
62
62
62
63

Medium Clouds (% Sky Obscured)

0
0
0
0
0
0
0
1
1
0
0
0
0
0
0
0
0
0
0
0
1
12
20
20

High 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

ISS Passover

Visibility (miles)

9
7
7
9
9
9
9
9
9
9
9
9
9
9
7
7
6
6
3
3
3
3
3
3

Fog (%)

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

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)

7
6
5
5
5
5
5
5
5
5
5
5
4
4
4
4
4
3
3
3
3
3
3
3

Chance of Frost

Temperature (°C)

-22
-22
-21
-20
-18
-19
-19
-19
-19
-20
-20
-20
-21
-21
-21
-21
-22
-22
-23
-23
-23
-24
-24
-25

Feels Like (°C)

-25
-25
-24
-23
-22
-22
-22
-22
-22
-23
-23
-23
-24
-24
-24
-24
-25
-25
-26
-27
-27
-28
-29
-29

Dew Point (°C)

-25
-24
-23
-22
-21
-21
-21
-22
-22
-22
-23
-23
-23
-23
-24
-24
-24
-25
-25
-26
-26
-27
-27
-28

Relative Humidity (%)

79
80
80
82
81
80
80
79
80
80
79
77
78
77
77
78
77
77
75
76
75
74
73
74

Pressure (mb)

1009
1009
1009
1009
1009
1009
1009
1009
1009
1009
1008
1008
1008
1008
1008
1007
1007
1007
1006
1006
1006
1006
1005
1005

Ozone (du)

347
350
352
353
358
358
357
353
350
349
346
344
344
351
360
363
362
361
360
353
349
351
354
354

Thursday 1

Waxing Gibbous 96%

No Rise

No Set

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
01 Bad

Sun - Rise: 11:24, Set: 13:10, Transit: 12:17. Moon - Rise: No Rise, Set: No Set. Civil Dark: 15:12 - 09:21. Nautical Dark: 16:35 - 07:58. Astro Dark: 17:44 - 06:50

Total Clouds (% Sky Obscured)

76
74
76
76
100
100
100
100
98
87
82
80
82
81
90
93
93
92
92
93
95
92
92
94

Low Clouds (% Sky Obscured)

63
63
63
64
100
100
100
100
97
81
74
70
73
73
79
82
84
86
86
87
88
85
85
85

Medium Clouds (% Sky Obscured)

20
20
25
35
35
25
19
10
15
8
2
1
22
33
47
57
49
52
59
62
61
67
74
71

High Clouds (% Sky Obscured)

0
0
3
3
5
5
4
4
3
2
21
17
10
33
41
41
34
12
12
42
27
22
29
12

ISS Passover

Visibility (miles)

3
3
4
9
2
0
0
0
0
0
0
0
0
0
0
0
0
2
2
1
1
1
1
0

Fog (%)

1
2
2
2
2
2
1
1
1
1
3
10
9
8
7
5
6
7
5
1
1
2
2
2

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
1
8
14
18
20
18
7
9
13
13
18
20
20
18
13
11
13
14
10
17
18
22

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
4
4
4
3
4
4
4
4
4
4
4
4
4
4
3
3
3
3
3
3
3
3
2

Chance of Frost

Temperature (°C)

-25
-25
-25
-25
-25
-24
-23
-23
-23
-23
-23
-22
-21
-21
-21
-20
-20
-21
-21
-22
-22
-22
-22
-21

Feels Like (°C)

-30
-30
-29
-29
-29
-29
-28
-28
-27
-27
-27
-26
-25
-25
-25
-24
-24
-24
-25
-25
-26
-26
-26
-24

Dew Point (°C)

-28
-28
-27
-27
-27
-26
-25
-25
-25
-24
-24
-23
-23
-22
-22
-21
-22
-22
-23
-24
-24
-24
-24
-22

Relative Humidity (%)

75
75
78
77
78
80
84
85
86
85
86
87
86
88
88
88
87
88
83
81
80
80
80
87

Pressure (mb)

1004
1004
1003
1003
1003
1002
1002
1002
1001
1001
1001
1001
1001
1001
1000
1000
1000
1000
1001
1001
1001
1001
1002
1002

Ozone (du)

352
349
346
344
345
347
349
348
348
349
349
351
351
351
351
353
353
356
357
356
355
353
351
350

Friday 2

Waxing Gibbous 100%

No Rise

No Set

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
01 Bad

Sun - Rise: 11:20, Set: 13:14, Transit: 12:17. Moon - Rise: No Rise, Set: No Set. Civil Dark: 15:14 - 09:20. Nautical Dark: 16:37 - 07:58. Astro Dark: 17:45 - 06:49

Total Clouds (% Sky Obscured)

97
96
96
94
91
95
94
98
97
96
97
98
99
99
97
96
95
95
94
93
90
86
78
77

Low Clouds (% Sky Obscured)

90
88
88
86
85
88
85
85
87
85
89
91
91
96
92
88
87
86
84
81
78
75
73
71

Medium Clouds (% Sky Obscured)

42
43
21
24
14
19
19
50
31
30
35
24
30
40
50
55
50
45
40
40
35
15
10
10

High Clouds (% Sky Obscured)

2
2
13
12
14
11
25
35
45
45
40
44
45
45
45
45
50
65
70
75
80
80
75
77

ISS Passover

Visibility (miles)

0
0
0
0
0
0
3
7
8
9
9
7
3
2
2
2
2
2
2
1
2
2
2
3

Fog (%)

3
3
3
2
1
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2

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 (%)

21
20
21
17
19
16
14
12
11
9
13
12
9
10
8
7
7
9
6
7
9
10
8
7

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)

2
2
2
2
3
2
2
2
1
2
2
1
2
2
2
2
2
2
2
2
2
2
2
2

Chance of Frost

Temperature (°C)

-20
-20
-21
-21
-21
-21
-21
-21
-21
-22
-22
-21
-22
-22
-22
-22
-22
-22
-22
-22
-21
-21
-22
-21

Feels Like (°C)

-24
-24
-25
-25
-25
-25
-25
-25
-25
-26
-26
-25
-25
-26
-26
-26
-26
-26
-26
-26
-25
-25
-26
-26

Dew Point (°C)

-22
-22
-22
-22
-22
-23
-22
-23
-23
-24
-24
-24
-24
-24
-24
-24
-25
-25
-24
-24
-24
-24
-24
-24

Relative Humidity (%)

87
86
87
85
87
85
85
83
81
80
80
79
79
79
79
79
79
79
80
79
81
81
80
80

Pressure (mb)

1001
1001
1001
1001
1002
1002
1002
1003
1003
1003
1003
1004
1004
1004
1005
1005
1005
1005
1006
1006
1006
1006
1007
1007

Ozone (du)

351
352
353
355
357
358
359
359
359
358
358
356
354
351
349
347
346
345
345
345
347
346
348
351

Saturday 3

Full Moon 100%

No Rise

No Set

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
01 Bad

Sun - Rise: 11:16, Set: 13:19, Transit: 12:18. Moon - Rise: No Rise, Set: No Set. Civil Dark: 15:16 - 09:19. Nautical Dark: 16:38 - 07:57. Astro Dark: 17:47 - 06:49

Total Clouds (% Sky Obscured)

77
75
74
73
72
72
75
78
82
85
88
90
94
95
96
96
96
95
95
95
95
92
88
86

Low Clouds (% Sky Obscured)

72
72
72
72
71
70
74
76
79
78
76
79
76
69
76
59
44
62
67
72
75
72
70
63

Medium Clouds (% Sky Obscured)

5
5
5
5
10
10
5
10
0
0
0
0
0
0
0
0
5
10
14
15
16
18
18
19

High Clouds (% Sky Obscured)

70
55
50
35
30
24
15
17
19
20
20
20
25
18
13
17
41
34
37
46
49
65
64
55

ISS Passover

Visibility (miles)

2
2
3
3
3
5
4
4
7
7
8
8
8
6
4
7
7
7
4
3
3
3
4
7

Fog (%)

2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2

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 (%)

7
7
7
7
8
8
8
8
8
8
8
7
7
7
7
7
6
5
5
6
5
5
6
6

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)

2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2

Chance of Frost

Temperature (°C)

-22
-22
-22
-23
-23
-23
-24
-24
-24
-24
-25
-25
-25
-25
-25
-24
-24
-25
-25
-25
-26
-26
-26
-26

Feels Like (°C)

-26
-26
-26
-27
-27
-27
-28
-28
-28
-28
-29
-29
-29
-29
-29
-28
-28
-29
-29
-29
-30
-30
-31
-30

Dew Point (°C)

-24
-24
-24
-25
-25
-25
-26
-26
-26
-27
-27
-27
-27
-27
-27
-27
-27
-27
-27
-28
-29
-29
-29
-29

Relative Humidity (%)

80
80
81
80
80
79
78
78
79
79
79
79
79
79
80
79
79
78
77
76
75
74
75
74

Pressure (mb)

1007
1007
1007
1007
1007
1007
1008
1008
1008
1008
1008
1008
1008
1008
1008
1008
1008
1008
1008
1008
1008
1008
1008
1008

Ozone (du)

352
353
354
354
355
357
358
360
362
362
361
361
361
362
363
364
367
368
368
366
365
364
363
362

Sunday 4

Waning Gibbous 97%

No Rise

No Set

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
01 Bad

Sun - Rise: 11:12, Set: 13:24, Transit: 12:18. Moon - Rise: No Rise, Set: No Set. Civil Dark: 15:18 - 09:18. Nautical Dark: 16:40 - 07:56. Astro Dark: 17:48 - 06:48

Total Clouds (% Sky Obscured)

86
84
83
85
89
94
94
94
93
93
94
95
94
94
92
85
78
70
72
72
76
87
95
98

Low Clouds (% Sky Obscured)

64
62
63
66
68
68
75
81
87
87
87
88
86
85
83
77
71
65
67
69
72
72
79
78

Medium Clouds (% Sky Obscured)

20
20
20
39
55
59
70
74
73
73
78
82
70
64
58
54
60
61
63
60
57
66
72
78

High Clouds (% Sky Obscured)

55
45
40
30
40
29
28
31
28
35
47
30
24
18
9
8
6
8
29
44
54
52
51
49

ISS Passover

Visibility (miles)

7
9
9
7
3
3
2
1
1
1
1
0
0
1
1
1
1
1
0
1
1
1
1
1

Fog (%)

2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2

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 (%)

5
5
4
5
5
6
5
6
7
15
10
15
17
14
11
11
11
11
11
10
10
10
10
7

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)

2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
3
3
3
3
3
3
3

Chance of Frost

Temperature (°C)

-26
-26
-26
-26
-26
-27
-27
-27
-27
-27
-27
-27
-27
-26
-26
-26
-27
-27
-27
-27
-27
-27
-27
-28

Feels Like (°C)

-30
-30
-30
-31
-31
-31
-31
-31
-31
-31
-31
-31
-31
-31
-31
-31
-31
-31
-31
-31
-31
-31
-31
-31

Dew Point (°C)

-29
-29
-29
-29
-29
-29
-30
-30
-29
-29
-29
-29
-29
-29
-29
-29
-29
-29
-29
-29
-29
-30
-30
-30

Relative Humidity (%)

74
75
75
74
75
74
73
74
76
77
78
78
79
79
79
80
80
81
80
80
81
80
79
79

Pressure (mb)

1008
1008
1008
1007
1007
1008
1008
1008
1008
1008
1008
1008
1008
1008
1008
1009
1009
1009
1009
1009
1009
1010
1010
1010

Ozone (du)

360
359
359
360
359
357
355
355
356
355
354
353
351
350
349
348
348
348
347
347
347
346
346
346

Monday 5

Waning Gibbous 95%

16:55

12:03

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
01 Bad

Sun - Rise: 11:08, Set: 13:29, Transit: 12:19. Moon - Rise: 16:55, Set: 12:03. Civil Dark: 15:20 - 09:17. Nautical Dark: 16:42 - 07:55. Astro Dark: 17:50 - 06:47

Total Clouds (% Sky Obscured)

98
97
97
97
97
97
97
98
99
98
98
98
97
97
97
98
98
99
99
99
98
99
99
100

Low Clouds (% Sky Obscured)

77
76
76
76
76
77
80
81
83
79
76
72
73
74
74
81
88
94
89
84
82
85
89
93

Medium Clouds (% Sky Obscured)

69
56
44
37
25
19
41
68
94
88
80
69
65
57
53
51
46
51
48
46
53
59
65
72

High Clouds (% Sky Obscured)

48
47
46
46
46
48
48
48
46
50
53
57
58
59
60
57
54
55
50
54
56
45
30
17

ISS Passover

Visibility (miles)

2
1
1
1
1
1
1
1
1
1
1
1
1
1
2
2
2
1
1
1
2
2
1
1

Fog (%)

2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2

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 (%)

8
8
9
8
7
5
8
9
10
9
7
1
4
3
0
8
11
13
11
9
3
11
15
18

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
3
3
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
3
3
3
3

Chance of Frost

Temperature (°C)

-28
-28
-28
-28
-28
-28
-27
-27
-27
-28
-28
-27
-28
-27
-28
-28
-27
-26
-25
-26
-26
-27
-26
-24

Feels Like (°C)

-31
-31
-32
-31
-31
-31
-30
-31
-32
-32
-31
-29
-28
-30
-30
-29
-30
-31
-32
-28
-28
-28
-29
-30

Dew Point (°C)

-30
-30
-30
-31
-30
-30
-30
-30
-30
-30
-30
-30
-30
-30
-30
-31
-29
-28
-27
-28
-29
-30
-28
-27

Relative Humidity (%)

79
79
79
78
78
78
79
78
79
79
78
78
77
76
76
74
76
76
77
77
75
75
76
77

Pressure (mb)

1010
1010
1010
1010
1011
1011
1011
1011
1012
1012
1012
1012
1013
1013
1013
1013
1013
1013
1013
1013
1014
1014
1014
1014

Ozone (du)

346
347
347
347
348
349
349
347
345
342
343
344
345
346
348
350
353
356
360
360
361
362
361
360

Tuesday 6

Waning Gibbous 91%

19:14

11:30

Sun - Rise: 11:04, Set: 13:34, Transit: 12:19. Moon - Rise: 19:14, Set: 11:30. Civil Dark: 15:23 - 09:15. Nautical Dark: 16:43 - 07:55. Astro Dark: 17:51 - 06:47

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 Tähtelä, Pohjois-Lappi, Finland (67.37,26.63)

Generated: 31/12/25 02:12:59. Forecast: 31/12/25 to 06/01/26. Timezone: UTC+2.00