Village Creek State Park
Clear Sky Chart
History

This sumarizes the distribution of each different forecast outcome for the Village Creek State Park clear sky chart from 2005-11-06 to 2024-11-11.

This page is a summary of past forecasts. Even though it's based only on forecasts, some people use these pages as clue to a site's climate. But climate data based on actual observation should be preferred (if you can find it!).

Cloud, Transparency and Seeing forecasts are summarized individually. But because good observing conditions require a combination of minimum cloud cover, transparency and seeing, the individual forecast summaries can be difficult to interpret. The observing conditions section counts the combinations of conditions needed for common types of astronomical observation.

Observing Conditions

The following tables count the occurrence of the combinations of forecast and darkness conditions needed for different observations. Conditions are rated by by what percentage of the hours the observation would likely be attempted are usable.
Observation TypeMinimum conditions for hour to be usableOut of hours
Clear of CloudsTransparencySeeingSky Brightness
Planetary:50%(no limit)Average(no limit)Nighttime Hours
Deep Sky:70%Average(no limit)5.9Nighttime Hours
CCD Imaging:70%Below AveragePoor(no limit)Nighttime Hours

Percentages are of nighttime hours per month, or per year, when a particular observing conditions was met. Deep Sky percentages never exceed 50% because the moon is up half the time. Deep sky percentages are much lower for charts at high latitudes because of fewer dark hours in the summer.

Overall

PlanetaryData
Pts
Deep Sky
Max 60%
Data
Pts
Both Planetary and Deep Sky
Max 60%
Data
Pts
Either Planetary or Deep SkyData
Pts
CCD ImagingData
Pts
Night
50%
24565
20%
96050
17%
24294
56%
24294
23%
57433

By Month

MonthDays of MonthPlanetaryData
Pts
Deep Sky
Max 60%
Data
Pts
Both Planetary and Deep Sky
Max 60%
Data
Pts
Either Planetary or Deep SkyData
Pts
CCD ImagingData
Pts
January1st to 10thNight
31%
946
26%
3979
10%
926
41%
926
18%
2390
January11th to 20thNight
32%
947
26%
3950
10%
930
40%
930
20%
2281
January21st to endNight
31%
1039
16%
4461
9%
1023
39%
1023
16%
2959
February1st to 10thNight
29%
950
21%
2470
8%
950
36%
950
24%
1710
February11th to 20thNight
28%
683
20%
2159
10%
680
37%
680
22%
1407
February21st to endNight
23%
471
20%
1727
10%
471
34%
471
17%
1140
March1st to 10thNight
31%
568
18%
3408
13%
555
41%
555
10%
2375
March11th to 20thNight
30%
565
16%
3465
13%
550
41%
550
10%
2310
March21st to endNight
34%
625
14%
3685
15%
605
45%
605
15%
2083
April1st to 10thNight
31%
570
23%
2043
14%
570
44%
570
21%
1287
April11th to 20thNight
36%
563
25%
1875
16%
563
49%
563
25%
1125
April21st to endNight
38%
570
23%
1900
18%
570
48%
570
26%
1152
May1st to 10thNight
39%
565
13%
3130
16%
559
47%
559
12%
2224
May11th to 20thNight
50%
551
17%
2896
23%
541
56%
541
19%
1700
May21st to endNight
60%
615
15%
3084
23%
593
67%
593
21%
1788
June1st to 10thNight
75%
570
22%
1710
24%
570
77%
570
42%
929
June11th to 20thNight
73%
570
20%
1710
21%
570
76%
570
42%
923
June21st to endNight
71%
570
16%
1710
18%
570
72%
570
31%
1039
July1st to 10thNight
74%
539
11%
2741
17%
535
74%
535
22%
1433
July11th to 20thNight
80%
535
13%
2664
21%
533
82%
533
24%
1494
July21st to endNight
79%
610
12%
2950
19%
569
81%
569
19%
1891
August1st to 10thNight
87%
549
36%
2444
26%
544
88%
544
44%
974
August11th to 20thNight
83%
543
16%
2780
24%
543
84%
543
34%
1032
August21st to endNight
74%
608
11%
3208
19%
605
75%
605
18%
1931
September1st to 10thNight
75%
570
19%
1944
20%
570
77%
570
31%
1106
September11th to 20thNight
68%
570
18%
2090
21%
570
69%
570
25%
1252
September21st to endNight
73%
570
30%
2090
32%
570
75%
570
35%
1089
October1st to 10thNight
72%
746
27%
2372
26%
726
73%
726
38%
1334
October11th to 20thNight
61%
760
33%
2200
23%
740
67%
740
39%
1242
October21st to endNight
56%
836
30%
2663
25%
814
61%
814
34%
1570
November1st to 10thNight
55%
780
27%
2340
22%
780
59%
780
35%
1347
November11th to 20thNight
50%
763
30%
2287
21%
763
57%
763
34%
1312
November21st to endNight
39%
760
27%
2280
18%
760
47%
760
28%
1439
December1st to 10thNight
39%
902
25%
2422
14%
902
45%
902
28%
1600
December11th to 20thNight
32%
948
24%
2873
10%
948
39%
948
22%
1905
December21st to endNight
32%
1038
14%
4340
10%
1026
38%
1026
16%
2660

Individual Forecasts

The length of each colored bar in the "occurrence of each Forecast" column is proportional to the number of times the chart forecast that color. The percentages are of the total number of hours per month, or per year, with a particular forecast. The colors as the same as those used in clear sky charts.

Note: Transparency probabilities are only counted for those hours that have 30% or less cloud cover. Seeing probabilities are only counted for those hours that have 80% or less cloud cover. If that's too tricky, try Observing Conditions instead.

Overall

Occurrence of each ForecastData
Points
Cloud CoverDay
14%7%27%5%5%5%46%8%37%
101011
Night
14%6%25%44435%7%44%
98230
TransparencyDay
43%411%19%16%6%
104657
Night
38%412%20%18%8%
102724
SeeingDay
14%8%20%25%22%10%
14915
Night
16%6%22%31%22%3
24718

By Month

Percentage Cloud Cover SE (2006-)
Color Meanings:
Overcast 90% covered 80% covered 70% covered 60% covered 50% covered 40% covered 30% covered 20% covered 10% covered Clear
MonthDays in MonthOccurrence of each ForecastData
Points
January1st to 10thDay
22%9%26%333345%40%
2847
11th to 20thDay
19%6%25%332235%50%
2850
21st to endDay
25%7%36%5%3325%6%35%
3135
February1st to 10thDay
23%8%35%6%4435%5%35%
1710
11th to 20thDay
24%9%26%43334438%
1923
21st to endDay
24%8%36%5%33245%37%
1727
March1st to 10thDay
22%10%38%5%5%446%6%27%
3436
11th to 20thDay
20%8%38%5%5%5%36%8%28%
3480
21st to endDay
19%7%37%5%44345%39%
3814
April1st to 10thDay
16%7%37%5%5%5%45%6%38%
2135
11th to 20thDay
19%7%26%5%45%45%7%37%
2254
21st to endDay
12%6%37%5%4446%7%42%
2280
May1st to 10thDay
18%8%49%6%5%6%5%5%7%28%
3765
11th to 20thDay
15%6%26%44446%7%43%
3943
21st to endDay
9%6%27%6%6%6%5%8%9%35%
4477
June1st to 10thDay
8%6%37%7%6%7%6%8%8%34%
2470
11th to 20thDay
5%6%26%6%7%8%6%8%10%35%
2470
21st to endDay
8%6%38%6%8%9%7%9%10%27%
2470
July1st to 10thDay
8%6%38%7%7%7%6%9%12%25%
4120
11th to 20thDay
8%7%411%9%7%7%6%9%10%22%
4120
21st to endDay
16%9%38%6%6%7%6%6%9%23%
4465
August1st to 10thDay
2215%445%47%10%56%
4104
11th to 20thDay
33145%5%7%6%9%12%45%
3734
21st to endDay
10%6%28%6%7%7%5%6%8%35%
4180
September1st to 10thDay
10%6%28%5%6%6%6%6%9%36%
2230
11th to 20thDay
15%6%27%6%5%6%5%7%9%33%
2090
21st to endDay
11%5%26%5%4446%7%45%
2085
October1st to 10thDay
7%425%44445%6%54%
1900
11th to 20thDay
10%5%25%44445%7%52%
1900
21st to endDay
13%5%25%333346%52%
2090
November1st to 10thDay
12%6%26%46%5%45%6%44%
1958
11th to 20thDay
14%6%26%5%34346%48%
1900
21st to endDay
17%8%26%5%44245%43%
1900
December1st to 10thDay
17%8%26%444446%41%
1753
11th to 20thDay
17%8%47%5%44345%39%
2161
21st to endDay
18%7%26%33335%6%42%
3135
January1st to 10thNight
18%9%35%343247%44%
4108
11th to 20thNight
20%7%25%33213450%
4120
21st to endNight
25%9%25%43325%7%35%
4532
February1st to 10thNight
19%9%45%433346%39%
2470
11th to 20thNight
23%9%25%322245%43%
2159
21st to endNight
25%8%26%33435%5%36%
1727
March1st to 10thNight
25%13%37%433345%29%
3419
11th to 20thNight
24%8%38%5%4435%5%32%
3480
21st to endNight
16%7%26%44445%6%43%
3817
April1st to 10thNight
16%8%27%44445%7%40%
2043
11th to 20thNight
19%5%15%43336%8%43%
1875
21st to endNight
15%7%25%44435%6%45%
1900
May1st to 10thNight
27%9%37%44446%7%27%
3130
11th to 20thNight
15%6%27%44435%6%43%
2953
21st to endNight
14%6%26%45%5%48%10%36%
3090
June1st to 10thNight
6%415%34347%10%54%
1710
11th to 20thNight
5%324335%47%13%52%
1710
21st to endNight
7%5%2445%5%5%8%11%42%
1710
July1st to 10thNight
5%6%25%5%5%45%7%14%42%
2850
11th to 20thNight
35%37%6%5%5%5%8%11%43%
2850
21st to endNight
9%7%37%5%6%5%46%10%37%
3098
August1st to 10thNight
221323336%11%64%
2836
11th to 20thNight
221223436%13%61%
3092
21st to endNight
7%426%446%5%8%11%43%
3476
September1st to 10thNight
8%5%25%445%47%11%46%
1944
11th to 20thNight
11%5%36%45%5%46%8%43%
2090
21st to endNight
9%425%334346%57%
2090
October1st to 10thNight
6%41443435%6%61%
2266
11th to 20thNight
10%323233347%59%
2280
21st to endNight
12%5%24222235%60%
2508
November1st to 10thNight
11%6%25%43435%6%52%
2340
11th to 20thNight
12%6%1433435%6%53%
2287
21st to endNight
16%7%27%43335%5%45%
2280
December1st to 10thNight
19%9%25%43435%6%42%
2422
11th to 20thNight
17%9%36%43335%5%42%
3036
21st to endNight
19%7%25%44435%5%42%
4532

Transparency (when cloud cover <= 30%)
Color Meanings:
Too cloudy to forecast Poor Below Average Average Above average Transparent
MonthDays in MonthOccurrence of each ForecastData
Points
January1st to 10thDay
47%4317%20%9%
2848
11th to 20thDay
39%25%18%27%9%
2850
21st to endDay
52%2317%17%10%
3135
February1st to 10thDay
52%35%14%16%10%
1710
11th to 20thDay
51%35%14%17%10%
1933
21st to endDay
51%37%14%16%9%
1727
March1st to 10thDay
57%39%12%14%4
3436
11th to 20thDay
55%39%14%13%6%
3480
21st to endDay
47%37%17%22%4
3814
April1st to 10thDay
47%49%16%16%9%
2135
11th to 20thDay
47%48%16%15%10%
2254
21st to endDay
41%49%17%23%5%
2280
May1st to 10thDay
56%310%17%10%4
3800
11th to 20thDay
40%48%21%25%3
3947
21st to endDay
43%5%13%28%10%1
4489
June1st to 10thDay
43%6%15%20%14%1
2470
11th to 20thDay
40%8%12%24%14%2
2470
21st to endDay
46%9%17%19%9%
2470
July1st to 10thDay
49%6%25%18%3
4056
11th to 20thDay
55%6%19%15%5%
4051
21st to endDay
55%7%17%17%31
4325
August1st to 10thDay
23%5%13%37%21%
4090
11th to 20thDay
29%5%32%29%41
3770
21st to endDay
46%7%14%18%14%1
4179
September1st to 10thDay
43%9%14%17%14%4
2230
11th to 20thDay
45%7%13%16%15%5%
2090
21st to endDay
37%5%11%21%16%10%
2085
October1st to 10thDay
24%36%13%17%37%
3160
11th to 20thDay
21%2419%35%19%
3140
21st to endDay
29%1312%42%13%
3428
November1st to 10thDay
40%48%19%20%10%
1958
11th to 20thDay
39%37%17%22%12%
1900
21st to endDay
45%35%19%20%9%
1900
December1st to 10thDay
45%39%19%17%7%
1753
11th to 20thDay
47%36%15%20%10%
2159
21st to endDay
43%26%16%24%9%
3135
January1st to 10thNight
44%35%18%21%10%
4108
11th to 20thNight
41%2418%26%9%
4120
21st to endNight
52%2417%17%9%
4532
February1st to 10thNight
47%37%12%18%12%
2470
11th to 20thNight
46%36%15%19%10%
2159
21st to endNight
50%37%13%14%12%
1727
March1st to 10thNight
59%37%13%12%6%
3419
11th to 20thNight
55%310%13%14%5%
3480
21st to endNight
43%311%15%23%6%
3817
April1st to 10thNight
44%49%18%16%10%
2043
11th to 20thNight
39%411%19%16%12%
1875
21st to endNight
40%48%21%21%6%
1900
May1st to 10thNight
57%410%14%10%4
3160
11th to 20thNight
43%49%18%23%3
2954
21st to endNight
40%5%20%25%8%1
3099
June1st to 10thNight
25%6%20%32%16%1
1710
11th to 20thNight
24%7%19%32%16%3
1710
21st to endNight
33%9%22%27%9%
1710
July1st to 10thNight
34%6%36%21%3
2805
11th to 20thNight
34%6%32%24%5%
2796
21st to endNight
42%9%25%20%4
2999
August1st to 10thNight
15%420%41%20%
2826
11th to 20thNight
16%5%36%35%7%
3122
21st to endNight
34%11%20%21%13%1
3476
September1st to 10thNight
30%9%21%23%13%4
1944
11th to 20thNight
38%7%17%18%15%5%
2090
21st to endNight
29%5%12%25%18%13%
2090
October1st to 10thNight
20%26%16%18%38%
3786
11th to 20thNight
17%3424%31%22%
3779
21st to endNight
23%15%13%41%17%
4120
November1st to 10thNight
33%311%19%22%11%
2340
11th to 20thNight
33%39%19%24%11%
2287
21st to endNight
41%38%18%19%11%
2280
December1st to 10thNight
44%39%20%15%10%
2422
11th to 20thNight
45%35%13%20%14%
3037
21st to endNight
45%37%13%25%7%
4532

Seeing (when cloud cover <= 80%)
Color Meanings:
Too cloudy to forecast Bad 1/5 Poor 2/5 Average 3/5 Good 4/5 Excellent 5/5
MonthDays in MonthOccurrence of each ForecastData
Points
January1st to 10thDay
26%14%38%13%8%1
270
11th to 20thDay
20%17%34%21%6%1
270
21st to endDay
23%22%32%20%4
297
February1st to 10thDay
30%18%31%17%4
270
11th to 20thDay
36%15%28%19%3
270
21st to endDay
31%28%28%12%2
225
March1st to 10thDay
25%21%33%16%4
270
11th to 20thDay
17%27%37%14%4
270
21st to endDay
24%19%36%17%4
297
April1st to 10thDay
18%20%34%23%5%
315
11th to 20thDay
25%17%24%20%12%1
452
21st to endDay
17%11%33%26%12%1
460
May1st to 10thDay
20%11%30%25%14%1
463
11th to 20thDay
13%8%26%33%18%4
588
21st to endDay
10%7%26%34%18%5%
734
June1st to 10thDay
7%316%34%28%12%
680
11th to 20thDay
8%315%36%28%10%
680
21st to endDay
10%313%26%30%18%
680
July1st to 10thDay
8%28%27%36%20%
671
11th to 20thDay
7%16%26%38%23%
668
21st to endDay
9%35%25%35%23%
739
August1st to 10thDay
3426%43%23%
676
11th to 20thDay
6%314%46%31%
484
21st to endDay
13%27%20%32%27%
539
September1st to 10thDay
11%36%22%37%20%
440
11th to 20thDay
12%39%30%33%14%
300
21st to endDay
13%213%28%33%10%
300
October1st to 10thDay
7%322%39%21%7%
300
11th to 20thDay
10%7%18%38%18%9%
300
21st to endDay
18%9%23%31%14%5%
330
November1st to 10thDay
16%8%26%30%19%2
300
11th to 20thDay
18%10%31%31%8%2
270
21st to endDay
21%20%28%20%9%2
270
December1st to 10thDay
22%8%33%23%11%4
270
11th to 20thDay
18%13%42%21%41
270
21st to endDay
24%18%33%18%5%2
297
January1st to 10thNight
23%10%31%28%8%
950
11th to 20thNight
23%9%31%29%7%
950
21st to endNight
23%11%30%31%6%
1045
February1st to 10thNight
23%12%31%29%4
950
11th to 20thNight
30%9%30%25%6%
683
21st to endNight
26%13%35%24%3
471
March1st to 10thNight
27%8%30%31%4
570
11th to 20thNight
21%10%34%29%6%
570
21st to endNight
21%8%33%30%9%
627
April1st to 10thNight
18%10%37%28%7%
570
11th to 20thNight
20%10%28%30%12%
563
21st to endNight
18%8%33%31%11%1
570
May1st to 10thNight
15%10%29%35%11%
570
11th to 20thNight
12%6%25%39%17%1
561
21st to endNight
8%5%21%38%25%3
617
June1st to 10thNight
6%29%40%39%5%
570
11th to 20thNight
5%112%42%36%4
570
21st to endNight
8%28%31%42%9%
570
July1st to 10thNight
6%16%32%44%12%
555
11th to 20thNight
45%30%47%13%
552
21st to endNight
6%1429%48%12%
624
August1st to 10thNight
2428%56%10%
567
11th to 20thNight
5%1224%53%15%
564
21st to endNight
8%15%23%49%14%
627
September1st to 10thNight
8%26%25%49%10%
570
11th to 20thNight
11%27%26%47%8%
570
21st to endNight
11%18%32%39%9%
570
October1st to 10thNight
7%311%34%39%6%
746
11th to 20thNight
11%320%38%25%3
760
21st to endNight
13%7%21%35%22%3
836
November1st to 10thNight
14%420%37%23%2
780
11th to 20thNight
13%8%24%38%16%
763
21st to endNight
19%6%31%29%13%1
760
December1st to 10thNight
23%7%26%31%12%
902
11th to 20thNight
24%9%28%31%7%
950
21st to endNight
24%10%29%30%7%
1045
Page generated at 2024-11-08 05:44:49. Version ac07

Copyright © 2024 Attilla Danko.


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