Baker Creek State Park
Clear Sky Chart
History

This sumarizes the distribution of each different forecast outcome for the Baker Creek State Park clear sky chart from 2005-11-06 to 2024-01-13.

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
46%
24132
22%
74389
14%
24074
55%
24074
26%
46286

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
27%
760
23%
2459
9%
757
43%
757
20%
1526
January11th to 20thNight
31%
732
25%
2378
13%
732
48%
732
20%
1488
January21st to endNight
24%
792
27%
2574
11%
792
43%
792
22%
1568
February1st to 10thNight
32%
720
23%
2223
11%
720
45%
720
23%
1399
February11th to 20thNight
22%
703
23%
2098
7%
699
38%
699
22%
1341
February21st to endNight
26%
592
24%
1776
9%
592
42%
592
23%
1139
March1st to 10thNight
33%
720
26%
1998
13%
720
44%
720
29%
1234
March11th to 20thNight
31%
720
22%
1980
9%
720
42%
720
27%
1283
March21st to endNight
33%
792
22%
2178
9%
792
44%
792
25%
1426
April1st to 10thNight
37%
720
26%
1980
13%
720
47%
720
32%
1183
April11th to 20thNight
40%
682
26%
1847
12%
682
51%
682
34%
1107
April21st to endNight
50%
540
31%
1620
20%
540
59%
540
35%
918
May1st to 10thNight
49%
540
22%
1620
11%
540
56%
540
32%
952
May11th to 20thNight
49%
531
15%
1593
9%
531
54%
531
27%
1038
May21st to endNight
64%
582
20%
1744
15%
582
66%
582
28%
1121
June1st to 10thNight
62%
540
14%
1620
13%
540
63%
540
25%
1085
June11th to 20thNight
66%
540
16%
1620
12%
540
68%
540
31%
1000
June21st to endNight
65%
540
13%
1620
9%
540
67%
540
26%
1076
July1st to 10thNight
67%
525
11%
1575
9%
525
67%
525
23%
1086
July11th to 20thNight
68%
522
12%
1566
11%
522
68%
522
25%
1040
July21st to endNight
69%
591
13%
1672
10%
558
70%
558
25%
1144
August1st to 10thNight
68%
537
13%
1600
11%
534
69%
534
20%
1114
August11th to 20thNight
64%
534
18%
1598
15%
534
65%
534
24%
1073
August21st to endNight
58%
675
14%
2007
12%
675
60%
675
22%
1406
September1st to 10thNight
67%
720
18%
1980
15%
720
68%
720
30%
1298
September11th to 20thNight
57%
720
20%
1980
17%
720
60%
720
28%
1312
September21st to endNight
56%
720
24%
1980
18%
720
62%
720
32%
1258
October1st to 10thNight
55%
720
27%
2006
22%
720
61%
720
36%
1197
October11th to 20thNight
54%
720
31%
2160
26%
720
63%
720
36%
1234
October21st to endNight
49%
792
32%
2376
24%
792
62%
792
35%
1324
November1st to 10thNight
51%
740
30%
2230
23%
740
60%
740
36%
1255
November11th to 20thNight
40%
760
28%
2470
19%
760
53%
760
30%
1396
November21st to endNight
41%
760
27%
2470
17%
760
54%
760
28%
1443
December1st to 10thNight
35%
760
26%
2470
14%
760
49%
760
22%
1543
December11th to 20thNight
37%
759
28%
2912
18%
758
49%
758
23%
1628
December21st to endNight
29%
831
15%
4409
12%
817
41%
817
11%
2651

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%5%25%5%35%5%6%8%44%
74898
Night
13%5%25%5%345%5%7%45%
74850
TransparencyDay
39%6%11%20%19%5%
74621
Night
38%6%11%19%20%7%
74646
SeeingDay
16%9%23%25%19%8%
14018
Night
16%9%22%30%20%3
24140

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
16%6%25%5%24346%46%
1706
11th to 20thDay
18%6%25%5%34446%43%
1638
21st to endDay
18%7%24324345%48%
1782
February1st to 10thDay
16%6%25%445%5%6%6%42%
1733
11th to 20thDay
22%5%2342345%6%43%
1748
21st to endDay
19%6%36%43435%6%42%
1480
March1st to 10thDay
15%5%24424345%52%
1961
11th to 20thDay
18%4245%345%46%43%
1980
21st to endDay
16%5%26%5%3445%7%43%
2178
April1st to 10thDay
11%4244445%5%6%51%
1980
11th to 20thDay
11%5%35%5%35%35%6%48%
2074
21st to endDay
9%5%2343446%9%51%
2340
May1st to 10thDay
9%424435%5%6%8%51%
2340
11th to 20thDay
13%5%26%6%35%5%6%9%41%
2301
21st to endDay
12%5%245%36%6%6%9%42%
2531
June1st to 10thDay
9%6%26%7%47%7%6%11%36%
2340
11th to 20thDay
7%325%6%45%6%7%10%44%
2340
21st to endDay
6%4246%46%6%7%11%41%
2340
July1st to 10thDay
8%5%37%7%6%7%7%8%9%33%
2340
11th to 20thDay
8%5%26%5%5%7%7%8%13%34%
2340
21st to endDay
7%5%25%7%47%8%10%11%33%
2547
August1st to 10thDay
10%5%37%6%47%6%9%10%33%
2327
11th to 20thDay
12%426%6%5%6%7%7%10%34%
2303
21st to endDay
11%7%46%7%46%6%7%9%32%
2325
September1st to 10thDay
9%336%6%46%7%6%9%41%
1980
11th to 20thDay
13%6%25%6%345%5%8%43%
1980
21st to endDay
15%7%25%43445%7%44%
1980
October1st to 10thDay
14%5%24423346%53%
1954
11th to 20thDay
13%423323346%57%
1800
21st to endDay
12%42442434457%
1980
November1st to 10thDay
13%6%25%323446%53%
1843
11th to 20thDay
15%5%23323447%53%
1710
21st to endDay
15%5%24435%45%6%48%
1710
December1st to 10thDay
17%7%35%6%3445%6%39%
1710
11th to 20thDay
17%5%1442345%5%49%
2153
21st to endDay
21%7%24424446%41%
3124
January1st to 10thNight
17%5%35%5%34445%46%
2459
11th to 20thNight
16%7%3443445%5%45%
2378
21st to endNight
17%6%35%42334448%
2574
February1st to 10thNight
17%5%245%245%46%45%
2223
11th to 20thNight
20%5%25%423445%45%
2098
21st to endNight
17%6%25%425%445%45%
1776
March1st to 10thNight
14%6%34424346%49%
1998
11th to 20thNight
15%5%25%4345%47%45%
1980
21st to endNight
14%5%36%5%35%5%5%7%44%
2178
April1st to 10thNight
12%42442435%8%51%
1980
11th to 20thNight
11%5%25%5%33447%53%
1847
21st to endNight
9%3245%2436%7%54%
1620
May1st to 10thNight
9%5%24435%5%6%8%50%
1620
11th to 20thNight
9%436%7%45%6%7%9%39%
1592
21st to endNight
10%5%25%5%36%6%6%9%43%
1744
June1st to 10thNight
10%6%36%6%47%6%8%11%34%
1620
11th to 20thNight
7%425%5%45%7%7%11%41%
1620
21st to endNight
9%4245%38%7%9%11%37%
1620
July1st to 10thNight
9%6%37%6%46%8%9%11%31%
1620
11th to 20thNight
8%5%27%6%46%8%8%12%34%
1620
21st to endNight
6%6%26%6%47%7%8%14%33%
1771
August1st to 10thNight
9%5%25%7%48%8%10%13%30%
1611
11th to 20thNight
10%5%35%6%46%6%7%11%37%
1598
21st to endNight
11%6%26%7%46%6%8%10%32%
2007
September1st to 10thNight
10%425%5%36%6%7%10%41%
1980
11th to 20thNight
13%7%35%6%3445%8%42%
1980
21st to endNight
13%7%245%3445%6%47%
1980
October1st to 10thNight
12%5%24423446%53%
2006
11th to 20thNight
11%5%24432345%56%
2160
21st to endNight
11%414423345%56%
2376
November1st to 10thNight
11%5%34323445%56%
2230
11th to 20thNight
14%5%24323446%53%
2470
21st to endNight
15%414425%5%46%49%
2470
December1st to 10thNight
17%7%25%42345%6%44%
2470
11th to 20thNight
17%5%24423335%53%
3042
21st to endNight
20%7%36%5%2445%6%38%
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
40%5%7%19%23%5%
1707
11th to 20thDay
43%47%18%22%5%
1638
21st to endDay
40%35%20%26%7%
1782
February1st to 10thDay
42%48%21%18%6%
1733
11th to 20thDay
42%4420%23%7%
1758
21st to endDay
44%5%8%15%20%9%
1480
March1st to 10thDay
37%37%20%23%11%
1961
11th to 20thDay
41%5%10%19%17%8%
1980
21st to endDay
43%5%10%20%18%5%
2178
April1st to 10thDay
33%411%19%25%6%
1980
11th to 20thDay
37%49%19%21%10%
2074
21st to endDay
31%5%11%27%22%4
2340
May1st to 10thDay
31%6%13%24%21%5%
2340
11th to 20thDay
40%7%15%20%16%1
2305
21st to endDay
38%8%12%25%17%2
2531
June1st to 10thDay
41%8%16%22%11%2
2340
11th to 20thDay
33%9%17%25%14%1
2340
21st to endDay
35%11%17%21%13%4
2340
July1st to 10thDay
43%9%18%17%10%3
2275
11th to 20thDay
40%12%20%19%7%3
2271
21st to endDay
38%13%20%20%9%1
2405
August1st to 10thDay
44%11%16%20%7%1
2314
11th to 20thDay
45%11%15%17%10%2
2303
21st to endDay
46%10%16%17%9%2
2325
September1st to 10thDay
38%9%14%18%17%4
1980
11th to 20thDay
41%6%10%18%22%3
1980
21st to endDay
41%5%9%20%18%7%
1980
October1st to 10thDay
34%47%21%26%7%
1954
11th to 20thDay
31%37%25%26%8%
1800
21st to endDay
32%35%17%31%11%
1980
November1st to 10thDay
34%47%16%27%11%
1843
11th to 20thDay
32%47%21%25%10%
1710
21st to endDay
36%48%20%24%8%
1710
December1st to 10thDay
46%48%18%17%7%
1710
11th to 20thDay
37%37%19%22%11%
2150
21st to endDay
43%47%18%24%3
3124
January1st to 10thNight
41%46%18%24%6%
2459
11th to 20thNight
42%47%18%22%7%
2378
21st to endNight
40%3419%25%9%
2574
February1st to 10thNight
40%5%9%18%21%8%
2223
11th to 20thNight
42%46%19%22%8%
2099
21st to endNight
40%5%8%16%20%10%
1776
March1st to 10thNight
37%39%15%23%12%
1998
11th to 20thNight
39%5%11%15%22%8%
1980
21st to endNight
40%6%9%20%20%7%
2178
April1st to 10thNight
32%5%9%21%25%8%
1980
11th to 20thNight
32%47%22%24%10%
1847
21st to endNight
30%5%10%26%22%7%
1620
May1st to 10thNight
32%7%13%23%20%6%
1620
11th to 20thNight
39%8%16%19%16%2
1593
21st to endNight
37%9%12%23%16%3
1745
June1st to 10thNight
41%9%17%19%12%2
1620
11th to 20thNight
36%7%18%26%12%2
1620
21st to endNight
37%12%19%17%11%3
1620
July1st to 10thNight
42%11%22%12%10%3
1575
11th to 20thNight
39%10%24%18%6%2
1566
21st to endNight
40%12%22%19%7%1
1672
August1st to 10thNight
42%13%18%21%5%
1600
11th to 20thNight
40%11%18%19%11%1
1598
21st to endNight
44%11%16%18%9%2
2007
September1st to 10thNight
36%9%16%17%16%5%
1980
11th to 20thNight
41%6%13%15%20%4
1980
21st to endNight
37%6%11%20%21%7%
1980
October1st to 10thNight
33%5%10%18%29%6%
2006
11th to 20thNight
32%48%21%26%10%
2160
21st to endNight
30%36%18%30%13%
2376
November1st to 10thNight
31%47%18%27%13%
2230
11th to 20thNight
34%36%18%26%13%
2470
21st to endNight
36%47%19%26%8%
2470
December1st to 10thNight
41%5%9%20%20%6%
2470
11th to 20thNight
37%28%17%27%9%
3044
21st to endNight
47%37%20%20%3
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
24%17%39%16%3
270
11th to 20thDay
24%16%34%21%31
246
21st to endDay
25%24%36%10%31
264
February1st to 10thDay
23%20%38%15%3
240
11th to 20thDay
35%15%35%13%1
240
21st to endDay
23%22%39%15%2
198
March1st to 10thDay
23%15%32%25%5%
401
11th to 20thDay
22%15%36%20%7%1
420
21st to endDay
22%16%34%18%9%
462
April1st to 10thDay
20%13%29%26%11%1
420
11th to 20thDay
15%14%30%26%13%2
412
21st to endDay
15%11%28%26%15%5%
420
May1st to 10thDay
13%11%31%28%14%4
423
11th to 20thDay
14%6%19%31%19%10%
447
21st to endDay
16%7%15%25%25%12%
485
June1st to 10thDay
12%316%28%31%10%
450
11th to 20thDay
9%417%26%29%14%
450
21st to endDay
9%316%31%27%14%
450
July1st to 10thDay
9%39%23%34%22%
445
11th to 20thDay
9%28%26%38%17%
444
21st to endDay
8%27%29%39%16%
488
August1st to 10thDay
14%311%25%31%16%
446
11th to 20thDay
13%37%27%33%17%
439
21st to endDay
14%312%23%33%16%
495
September1st to 10thDay
10%310%27%35%15%
450
11th to 20thDay
16%212%29%29%12%
450
21st to endDay
18%417%27%24%10%
450
October1st to 10thDay
17%422%31%16%11%
450
11th to 20thDay
13%7%23%28%22%7%
450
21st to endDay
15%8%26%28%17%5%
495
November1st to 10thDay
19%9%25%27%16%5%
441
11th to 20thDay
16%13%41%22%7%1
270
21st to endDay
14%11%36%25%11%3
270
December1st to 10thDay
26%16%30%22%6%
270
11th to 20thDay
24%12%36%21%6%1
270
21st to endDay
30%16%32%14%43
297
January1st to 10thNight
22%16%28%28%6%
760
11th to 20thNight
20%16%28%28%8%
732
21st to endNight
22%16%35%24%3
792
February1st to 10thNight
21%15%29%28%7%
720
11th to 20thNight
24%14%37%22%3
703
21st to endNight
21%17%32%27%4
592
March1st to 10thNight
17%13%33%32%5%
720
11th to 20thNight
18%10%36%28%8%1
720
21st to endNight
18%12%32%29%9%
792
April1st to 10thNight
15%14%31%28%13%
720
11th to 20thNight
14%12%28%30%15%
682
21st to endNight
11%8%25%38%16%1
540
May1st to 10thNight
11%9%24%38%17%1
540
11th to 20thNight
12%324%34%22%4
531
21st to endNight
13%310%35%34%6%
584
June1st to 10thNight
11%312%39%30%5%
540
11th to 20thNight
6%413%31%34%11%
540
21st to endNight
10%213%32%34%9%
540
July1st to 10thNight
10%37%30%38%13%
525
11th to 20thNight
10%16%30%43%10%
522
21st to endNight
7%18%30%44%10%
591
August1st to 10thNight
11%17%31%40%10%
537
11th to 20thNight
12%28%31%41%7%
534
21st to endNight
13%311%28%38%8%
675
September1st to 10thNight
11%39%32%38%8%
720
11th to 20thNight
15%213%25%39%6%
720
21st to endNight
16%316%31%29%5%
720
October1st to 10thNight
15%5%18%31%25%6%
720
11th to 20thNight
15%6%20%33%22%4
720
21st to endNight
13%9%22%32%22%2
792
November1st to 10thNight
14%7%23%32%21%3
740
11th to 20thNight
17%11%29%29%13%1
760
21st to endNight
19%10%25%29%16%1
760
December1st to 10thNight
21%13%24%30%10%1
760
11th to 20thNight
19%11%26%31%12%1
760
21st to endNight
27%14%23%28%7%
836
Page generated at 2024-01-10 10:16:13. Version ac07

Copyright 2024 Attilla Danko


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