Wildcat Mountain State Park
Clear Sky Chart
History

This sumarizes the distribution of each different forecast outcome for the Wildcat Mountain State Park clear sky chart from 2005-11-06 to 2024-01-12.

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
34%
24747
17%
74631
9%
24689
41%
24689
22%
50138

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
22%
950
15%
2648
6%
946
30%
946
18%
1909
January11th to 20thNight
19%
906
11%
2535
3%
906
26%
906
15%
1931
January21st to endNight
19%
990
11%
2654
2%
990
26%
990
15%
2040
February1st to 10thNight
21%
900
13%
2340
3%
900
27%
900
18%
1726
February11th to 20thNight
21%
831
18%
2227
5%
828
30%
828
20%
1562
February21st to endNight
20%
592
18%
1776
5%
592
32%
592
17%
1242
March1st to 10thNight
24%
720
14%
2160
6%
720
31%
720
19%
1498
March11th to 20thNight
27%
559
20%
1999
11%
559
39%
559
20%
1275
March21st to endNight
32%
594
18%
2056
13%
594
40%
594
17%
1423
April1st to 10thNight
22%
540
16%
1800
8%
540
34%
540
18%
1228
April11th to 20thNight
31%
533
20%
1775
15%
533
42%
533
20%
1180
April21st to endNight
31%
540
16%
1782
9%
540
40%
540
20%
1189
May1st to 10thNight
31%
540
16%
1445
8%
540
37%
540
23%
1026
May11th to 20thNight
37%
531
18%
1417
9%
531
44%
531
28%
967
May21st to endNight
45%
584
16%
1551
8%
582
50%
582
31%
997
June1st to 10thNight
49%
540
16%
1440
7%
540
54%
540
34%
902
June11th to 20thNight
44%
540
18%
1440
9%
540
48%
540
34%
912
June21st to endNight
53%
540
20%
1440
10%
540
57%
540
38%
874
July1st to 10thNight
65%
525
18%
1400
10%
525
68%
525
46%
787
July11th to 20thNight
61%
522
21%
1392
12%
522
64%
522
42%
809
July21st to endNight
69%
591
22%
1487
15%
558
73%
558
47%
844
August1st to 10thNight
68%
537
23%
1504
19%
534
71%
534
40%
863
August11th to 20thNight
62%
534
22%
1654
22%
534
67%
534
36%
937
August21st to endNight
59%
594
24%
1980
24%
594
64%
594
35%
1088
September1st to 10thNight
54%
540
23%
1800
21%
540
60%
540
31%
1020
September11th to 20thNight
52%
540
29%
1800
24%
540
60%
540
34%
993
September21st to endNight
42%
711
23%
2007
12%
711
52%
711
33%
1200
October1st to 10thNight
43%
720
22%
2160
14%
720
49%
720
31%
1311
October11th to 20thNight
30%
720
19%
2160
10%
720
39%
720
24%
1405
October21st to endNight
30%
792
16%
2500
10%
792
37%
792
19%
1678
November1st to 10thNight
30%
740
23%
2406
14%
740
42%
740
23%
1506
November11th to 20thNight
20%
864
15%
2574
6%
864
29%
864
16%
1836
November21st to endNight
24%
950
18%
2660
8%
950
33%
950
20%
1847
December1st to 10thNight
19%
950
12%
2660
3%
950
27%
950
17%
1951
December11th to 20thNight
18%
949
12%
3205
3%
948
25%
948
11%
2416
December21st to endNight
15%
1038
7%
4797
3%
1026
23%
1026
6%
3766

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
13%9%47%6%35%5%5%7%36%
74754
Night
13%9%47%6%3445%7%38%
74975
TransparencyDay
47%5%13%23%12%1
74454
Night
46%412%24%13%2
74795
SeeingDay
17%12%30%24%12%4
14760
Night
17%11%32%29%11%1
24756

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
10%12%5%10%8%46%46%6%28%
1517
11th to 20thDay
11%16%8%12%7%35%5%6%7%22%
1448
21st to endDay
12%13%6%12%9%35%46%7%22%
1701
February1st to 10thDay
10%12%6%9%6%46%5%6%7%30%
1620
11th to 20thDay
12%11%5%8%6%35%6%5%6%34%
1620
21st to endDay
13%11%6%10%7%45%437%32%
1480
March1st to 10thDay
14%11%6%8%445%446%33%
1800
11th to 20thDay
13%9%46%6%3445%7%39%
1975
21st to endDay
18%12%46%6%245%5%7%32%
2299
April1st to 10thDay
17%12%47%6%445%46%31%
2160
11th to 20thDay
18%12%46%5%45%446%32%
2134
21st to endDay
20%10%46%5%35%5%6%5%31%
2178
May1st to 10thDay
16%8%46%7%46%5%7%8%30%
2512
11th to 20thDay
17%7%37%6%345%6%8%33%
2479
21st to endDay
16%6%36%6%35%6%6%7%36%
2725
June1st to 10thDay
12%5%345%3447%9%45%
2520
11th to 20thDay
12%6%346%45%5%5%8%42%
2520
21st to endDay
12%6%26%6%35%5%6%8%40%
2520
July1st to 10thDay
8%325%436%7%7%9%47%
2520
11th to 20thDay
7%425%6%45%5%7%9%45%
2520
21st to endDay
8%3245%35%5%7%10%46%
2743
August1st to 10thDay
6%5%36%6%45%6%8%11%40%
2422
11th to 20thDay
14%6%35%5%35%6%6%8%41%
2247
21st to endDay
11%6%25%5%3446%7%46%
2376
September1st to 10thDay
14%6%25%5%345%5%8%43%
2160
11th to 20thDay
12%6%25%5%3445%7%45%
2150
21st to endDay
14%6%35%5%345%6%8%41%
1940
October1st to 10thDay
14%8%25%43445%7%44%
1800
11th to 20thDay
18%10%345%345%5%7%36%
1800
21st to endDay
17%11%46%6%34335%38%
1854
November1st to 10thDay
12%9%37%5%2445%8%41%
1672
11th to 20thDay
14%12%5%9%7%34447%31%
1601
21st to endDay
13%9%5%7%6%35%346%39%
1520
December1st to 10thDay
13%12%5%9%7%35%5%5%7%30%
1520
11th to 20thDay
12%13%7%7%7%45%45%8%28%
1918
21st to endDay
18%20%9%11%6%3433418%
2783
January1st to 10thNight
10%10%6%9%8%5%6%45%5%32%
2648
11th to 20thNight
13%12%6%10%9%45%45%7%26%
2535
21st to endNight
12%13%7%12%7%36%45%7%25%
2654
February1st to 10thNight
8%12%6%10%7%45%5%46%31%
2340
11th to 20thNight
11%8%47%7%46%45%6%38%
2226
21st to endNight
15%11%48%6%33445%35%
1776
March1st to 10thNight
15%9%5%7%6%345%5%6%36%
2160
11th to 20thNight
13%8%35%5%45%5%6%6%38%
1999
21st to endNight
19%9%37%5%3445%7%33%
2056
April1st to 10thNight
17%9%47%5%44446%35%
1800
11th to 20thNight
20%8%35%5%3435%8%37%
1775
21st to endNight
18%8%25%5%35%47%6%35%
1782
May1st to 10thNight
18%8%26%5%35%5%5%9%34%
1445
11th to 20thNight
14%8%46%5%3445%8%40%
1416
21st to endNight
12%7%25%5%3447%9%43%
1551
June1st to 10thNight
10%436%5%245%7%9%46%
1440
11th to 20thNight
10%5%26%5%3445%8%47%
1440
21st to endNight
9%5%344245%5%9%50%
1440
July1st to 10thNight
6%4143245%5%8%57%
1440
11th to 20thNight
7%4235%345%6%8%54%
1440
21st to endNight
6%323335%5%7%9%54%
1575
August1st to 10thNight
5%414436%47%10%51%
1513
11th to 20thNight
10%5%25%43345%7%52%
1654
21st to endNight
10%42342445%7%53%
1980
September1st to 10thNight
10%6%244335%47%51%
1800
11th to 20thNight
13%42433335%6%54%
1800
21st to endNight
12%6%24434446%51%
2007
October1st to 10thNight
13%6%25%42445%6%49%
2160
11th to 20thNight
16%7%36%4245%5%7%40%
2160
21st to endNight
17%10%45%5%245%5%6%36%
2500
November1st to 10thNight
14%8%46%42445%5%44%
2406
11th to 20thNight
13%10%49%8%44446%33%
2574
21st to endNight
15%9%48%6%24445%38%
2660
December1st to 10thNight
12%11%48%8%45%5%6%7%29%
2660
11th to 20thNight
12%13%6%11%7%45%445%27%
3279
21st to endNight
19%16%6%11%7%34445%19%
4884

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
55%413%18%9%
1518
11th to 20thDay
61%411%14%9%
1448
21st to endDay
61%412%14%8%1
1701
February1st to 10thDay
52%414%18%10%1
1620
11th to 20thDay
51%313%21%10%2
1629
21st to endDay
55%49%19%11%2
1480
March1st to 10thDay
53%412%21%8%2
1800
11th to 20thDay
46%5%13%22%13%2
1975
21st to endDay
53%5%11%22%8%1
2299
April1st to 10thDay
54%5%11%19%11%1
2160
11th to 20thDay
53%48%22%10%2
2134
21st to endDay
54%5%11%18%11%1
2178
May1st to 10thDay
51%6%14%22%7%1
2512
11th to 20thDay
49%5%12%21%11%1
2483
21st to endDay
45%6%10%22%14%2
2725
June1st to 10thDay
36%5%15%28%14%2
2520
11th to 20thDay
40%6%13%24%17%1
2520
21st to endDay
41%6%14%25%12%1
2520
July1st to 10thDay
32%7%15%31%13%2
2451
11th to 20thDay
34%7%14%26%18%2
2445
21st to endDay
32%5%16%30%14%3
2591
August1st to 10thDay
35%7%16%29%11%2
2407
11th to 20thDay
40%6%12%28%13%1
2247
21st to endDay
36%6%12%26%18%2
2376
September1st to 10thDay
39%6%12%26%17%1
2160
11th to 20thDay
37%5%14%32%12%1
2150
21st to endDay
40%412%30%13%
1940
October1st to 10thDay
41%412%31%12%
1800
11th to 20thDay
48%312%24%12%1
1800
21st to endDay
50%411%21%12%1
1854
November1st to 10thDay
42%413%23%16%2
1672
11th to 20thDay
55%312%20%9%1
1601
21st to endDay
47%416%24%9%1
1520
December1st to 10thDay
55%5%13%19%8%1
1520
11th to 20thDay
56%416%15%8%2
1915
21st to endDay
72%37%13%5%
2783
January1st to 10thNight
52%5%10%22%10%1
2648
11th to 20thNight
58%5%13%15%9%
2535
21st to endNight
60%411%16%9%1
2654
February1st to 10thNight
54%311%21%10%2
2340
11th to 20thNight
48%5%11%23%12%2
2227
21st to endNight
51%310%21%12%2
1776
March1st to 10thNight
49%5%12%22%9%2
2160
11th to 20thNight
44%5%12%24%13%2
1999
21st to endNight
51%5%9%21%12%2
2056
April1st to 10thNight
51%48%22%14%2
1800
11th to 20thNight
48%38%21%16%3
1775
21st to endNight
46%6%11%20%15%2
1782
May1st to 10thNight
48%5%12%20%14%
1445
11th to 20thNight
44%5%12%25%14%1
1417
21st to endNight
38%5%12%27%15%2
1552
June1st to 10thNight
33%6%12%30%16%1
1440
11th to 20thNight
36%5%11%28%19%2
1440
21st to endNight
31%6%15%29%15%4
1440
July1st to 10thNight
24%6%14%35%18%3
1400
11th to 20thNight
28%5%15%29%20%3
1392
21st to endNight
25%5%18%31%16%4
1487
August1st to 10thNight
28%6%16%32%16%3
1504
11th to 20thNight
31%5%15%30%17%2
1654
21st to endNight
30%5%12%29%19%4
1980
September1st to 10thNight
33%6%11%29%21%1
1800
11th to 20thNight
32%412%34%16%1
1800
21st to endNight
35%411%31%19%1
2007
October1st to 10thNight
36%410%30%18%2
2160
11th to 20thNight
43%413%22%17%1
2160
21st to endNight
48%5%11%23%12%1
2500
November1st to 10thNight
43%410%25%16%2
2406
11th to 20thNight
53%413%18%11%1
2574
21st to endNight
49%413%25%8%1
2660
December1st to 10thNight
54%5%13%21%7%1
2660
11th to 20thNight
60%411%18%7%1
3281
21st to endNight
67%38%15%6%
4884

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
17%18%34%21%8%3
270
11th to 20thDay
21%20%38%15%6%1
243
21st to endDay
21%15%39%20%5%
264
February1st to 10thDay
17%22%43%14%31
240
11th to 20thDay
19%28%33%14%5%
240
21st to endDay
21%23%42%13%2
198
March1st to 10thDay
21%21%40%13%5%
240
11th to 20thDay
20%20%32%19%7%2
240
21st to endDay
29%15%30%17%9%1
385
April1st to 10thDay
26%16%35%18%5%
420
11th to 20thDay
29%15%29%16%9%2
412
21st to endDay
24%16%31%19%8%2
420
May1st to 10thDay
20%16%32%25%5%2
595
11th to 20thDay
20%15%30%23%10%3
625
21st to endDay
19%12%25%25%14%4
679
June1st to 10thDay
12%7%29%34%16%3
630
11th to 20thDay
15%8%33%28%13%2
630
21st to endDay
15%8%29%29%13%4
630
July1st to 10thDay
9%422%30%25%10%
621
11th to 20thDay
9%7%28%31%19%6%
618
21st to endDay
6%5%28%36%17%7%
684
August1st to 10thDay
7%425%32%24%8%
626
11th to 20thDay
15%5%20%27%23%9%
561
21st to endDay
12%8%25%28%19%7%
495
September1st to 10thDay
18%8%23%29%17%5%
450
11th to 20thDay
14%8%24%30%19%5%
450
21st to endDay
20%13%28%24%14%2
410
October1st to 10thDay
16%15%31%25%12%1
270
11th to 20thDay
24%20%34%15%6%
270
21st to endDay
26%21%31%16%41
297
November1st to 10thDay
18%16%39%20%6%1
270
11th to 20thDay
23%18%39%17%4
270
21st to endDay
21%18%40%16%4
270
December1st to 10thDay
15%20%41%18%6%1
270
11th to 20thDay
21%17%36%21%5%
270
21st to endDay
30%17%38%12%2
297
January1st to 10thNight
15%17%36%24%7%1
950
11th to 20thNight
19%14%37%25%5%1
906
21st to endNight
19%13%37%26%6%1
990
February1st to 10thNight
16%16%37%25%5%1
900
11th to 20thNight
15%18%38%22%6%
832
21st to endNight
22%18%34%22%4
592
March1st to 10thNight
19%15%35%24%7%1
720
11th to 20thNight
18%13%35%25%8%1
559
21st to endNight
23%9%30%28%8%2
594
April1st to 10thNight
20%15%38%21%6%
540
11th to 20thNight
25%11%29%29%6%
533
21st to endNight
21%11%32%26%8%1
540
May1st to 10thNight
21%8%34%31%5%
540
11th to 20thNight
18%8%30%34%10%
531
21st to endNight
15%7%29%33%15%1
584
June1st to 10thNight
12%7%27%42%12%
540
11th to 20thNight
14%5%30%38%13%
540
21st to endNight
10%5%26%42%17%1
540
July1st to 10thNight
7%218%38%31%3
525
11th to 20thNight
8%5%21%43%21%3
522
21st to endNight
6%218%49%22%3
591
August1st to 10thNight
7%116%47%26%2
537
11th to 20thNight
10%317%37%27%5%
534
21st to endNight
12%419%40%23%3
594
September1st to 10thNight
12%5%25%36%16%6%
540
11th to 20thNight
14%426%31%21%4
540
21st to endNight
14%10%29%32%14%2
711
October1st to 10thNight
15%9%29%27%18%2
720
11th to 20thNight
20%12%32%27%8%
720
21st to endNight
21%12%32%27%7%1
792
November1st to 10thNight
18%10%37%26%9%1
740
11th to 20thNight
17%17%40%20%6%
864
21st to endNight
20%16%34%23%7%
950
December1st to 10thNight
20%13%40%22%5%1
950
11th to 20thNight
21%15%36%22%6%
950
21st to endNight
26%16%33%21%5%
1045
Page generated at 2024-01-08 21:31:25. Version ac07

Copyright 2024 Attilla Danko


Wildcat Mountain State Park Clear Sky Chart |Charts Home