Kinnikinic Creek
Clear Sky Chart
History

This sumarizes the distribution of each different forecast outcome for the Kinnikinic Creek clear sky chart from 2005-11-05 to 2018-01-20.

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
59%
15660
19%
48530
17%
15633
62%
15633
33%
28027

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 15thNight
50%
776
14%
2716
14%
776
53%
776
22%
1732
January16th to endNight
53%
788
19%
2755
19%
788
57%
788
27%
1619
February1st to 15thNight
49%
698
10%
2267
11%
696
50%
696
23%
1495
February16th to endNight
46%
632
14%
1895
12%
632
50%
632
28%
1219
March1st to 15thNight
51%
720
12%
2106
10%
720
54%
720
30%
1307
March16th to endNight
48%
768
14%
2112
10%
768
50%
768
31%
1325
April1st to 15thNight
52%
692
14%
1772
8%
692
54%
692
30%
1182
April16th to endNight
57%
540
17%
1620
14%
540
58%
540
33%
956
May1st to 15thNight
60%
539
17%
1619
14%
539
63%
539
37%
916
May16th to endNight
59%
439
12%
1563
14%
439
61%
439
24%
945
June1st to 15thNight
65%
360
15%
1278
17%
360
69%
360
31%
715
June16th to endNight
75%
360
26%
1290
35%
360
79%
360
47%
578
July1st to 15thNight
86%
340
21%
1360
32%
340
89%
340
54%
512
July16th to endNight
88%
376
32%
1416
45%
354
90%
354
58%
510
August1st to 15thNight
79%
539
29%
1611
27%
536
80%
536
56%
742
August16th to endNight
77%
607
36%
1753
27%
607
79%
607
58%
802
September1st to 15thNight
76%
720
31%
1895
23%
720
79%
720
57%
982
September16th to endNight
71%
716
32%
1980
26%
716
75%
716
47%
1077
October1st to 15thNight
64%
720
26%
2044
21%
720
69%
720
42%
1145
October16th to endNight
63%
768
25%
2463
22%
768
69%
768
38%
1326
November1st to 15thNight
52%
760
20%
2470
20%
760
55%
760
28%
1472
November16th to endNight
50%
859
16%
2614
12%
859
54%
859
29%
1594
December1st to 15thNight
52%
975
12%
2883
9%
975
54%
975
27%
1845
December16th to endNight
43%
968
14%
3048
10%
968
46%
968
22%
2031

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
3426%6%36%6%6%8%44%
49002
Night
2425%5%35%6%7%9%48%
48703
TransparencyDay
33%7%15%21%15%6%
48675
Night
28%9%18%24%14%4
48531
SeeingDay
8%11%28%32%14%4
5927
Night
4422%42%21%3
15672

By Month

Percentage Cloud Cover SW (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 15thDay
327%7%48%7%9%14%36%
1552
16th to endDay
436%7%37%7%9%11%38%
1572
February1st to 15thDay
338%7%5%7%8%7%11%36%
1593
16th to endDay
438%8%5%9%10%8%10%30%
1579
March1st to 15thDay
1426%6%49%8%9%12%34%
1854
16th to endDay
25%38%7%6%8%8%9%11%28%
2112
April1st to 15thDay
25%38%8%5%7%7%9%11%29%
2173
16th to endDay
45%37%7%46%5%6%10%39%
2340
May1st to 15thDay
47%36%6%35%6%5%9%41%
2331
16th to endDay
7%11%49%7%47%6%5%7%28%
2548
June1st to 15thDay
7%6%36%6%36%6%7%8%36%
2679
16th to endDay
3313424347%60%
2666
July1st to 15thDay
33134245%5%7%57%
2520
16th to endDay
331442443463%
2657
August1st to 15thDay
3215%5%45%5%7%6%52%
2340
16th to endDay
2313324445%63%
2447
September1st to 15thDay
4313323336%61%
2064
16th to endDay
5%5%23424447%53%
1980
October1st to 15thDay
6%6%36%5%3345%6%47%
1915
16th to endDay
2426%6%346%6%9%47%
1758
November1st to 15thDay
15%37%6%36%6%7%10%40%
1719
16th to endDay
1336%6%37%7%8%9%41%
1661
December1st to 15thDay
13310%9%47%7%8%9%34%
1405
16th to endDay
437%9%6%8%8%8%10%31%
1537
January1st to 15thNight
427%7%5%7%7%7%12%38%
2716
16th to endNight
5%36%5%35%6%8%10%42%
2755
February1st to 15thNight
5%38%6%5%6%8%9%10%34%
2256
16th to endNight
338%6%47%7%9%11%37%
1895
March1st to 15thNight
325%5%36%7%10%13%40%
2106
16th to endNight
15%26%5%35%6%9%12%41%
2112
April1st to 15thNight
29%45%5%36%5%8%10%38%
1772
16th to endNight
36%25%6%345%7%9%46%
1620
May1st to 15thNight
35%25%4346%5%10%49%
1619
16th to endNight
6%7%35%5%35%5%8%10%38%
1562
June1st to 15thNight
5%325%5%36%46%8%47%
1278
16th to endNight
2213324347%64%
1290
July1st to 15thNight
1122337%8%67%
1440
16th to endNight
112112345%74%
1512
August1st to 15thNight
12222346%8%65%
1620
16th to endNight
2112222347%68%
1753
September1st to 15thNight
3213312345%68%
1895
16th to endNight
5%4232335%6%61%
1980
October1st to 15thNight
5%5%233145%6%7%54%
2044
16th to endNight
34245%3446%9%52%
2463
November1st to 15thNight
5%37%6%35%6%8%9%42%
2470
16th to endNight
1225%5%36%7%8%10%44%
2614
December1st to 15thNight
336%7%47%8%9%12%38%
2883
16th to endNight
6%38%7%5%8%7%8%10%33%
3048

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 15thDay
30%14%23%20%9%1
1552
16th to endDay
32%11%19%23%9%3
1572
February1st to 15thDay
33%15%24%17%7%1
1593
16th to endDay
40%10%23%20%4
1579
March1st to 15thDay
33%13%28%18%5%
1854
16th to endDay
41%11%24%17%4
2112
April1st to 15thDay
41%10%21%21%4
2173
16th to endDay
38%6%23%22%8%
2340
May1st to 15thDay
37%5%20%27%8%
2331
16th to endDay
51%5%17%18%5%1
2552
June1st to 15thDay
41%7%12%23%11%2
2679
16th to endDay
24%27%23%33%8%
2666
July1st to 15thDay
23%45%20%26%18%
2371
16th to endDay
22%3311%27%31%
2490
August1st to 15thDay
27%48%17%24%17%
2325
16th to endDay
20%36%21%29%16%
2447
September1st to 15thDay
23%46%22%30%13%
2064
16th to endDay
28%311%28%22%5%
1980
October1st to 15thDay
35%5%15%26%14%3
1915
16th to endDay
30%7%17%26%16%1
1758
November1st to 15thDay
35%9%18%21%11%2
1719
16th to endDay
31%11%20%24%8%3
1661
December1st to 15thDay
40%12%21%17%7%
1405
16th to endDay
41%12%21%17%5%1
1537
January1st to 15thNight
33%15%20%19%9%1
2716
16th to endNight
30%11%18%24%11%3
2755
February1st to 15thNight
37%12%23%18%7%
2267
16th to endNight
33%12%26%21%41
1895
March1st to 15thNight
28%14%26%21%8%
2106
16th to endNight
29%12%27%23%6%
2112
April1st to 15thNight
36%9%23%23%7%
1772
16th to endNight
31%7%23%27%10%
1620
May1st to 15thNight
28%7%18%35%10%
1620
16th to endNight
36%9%20%26%8%
1563
June1st to 15thNight
30%7%15%31%12%2
1278
16th to endNight
18%47%27%31%10%
1290
July1st to 15thNight
12%49%24%29%18%
1360
16th to endNight
12%2414%35%31%
1416
August1st to 15thNight
15%49%21%27%20%
1611
16th to endNight
15%27%22%32%19%
1753
September1st to 15thNight
17%48%24%31%13%
1895
16th to endNight
23%411%30%24%5%
1980
October1st to 15thNight
25%6%16%32%17%2
2044
16th to endNight
25%6%18%29%18%1
2463
November1st to 15thNight
32%9%19%24%12%1
2470
16th to endNight
27%14%21%23%10%1
2614
December1st to 15thNight
33%12%26%19%7%
2883
16th to endNight
39%11%20%20%6%1
3048

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 15thDay
112%50%22%14%
90
16th to endDay
26%15%45%21%8%
73
February1st to 15thDay
10%32%32%17%7%
108
16th to endDay
210%34%38%12%1
238
March1st to 15thDay
49%34%42%8%
270
16th to endDay
6%11%34%39%7%
288
April1st to 15thDay
5%10%28%33%14%6%
269
16th to endDay
11%8%28%35%13%2
270
May1st to 15thDay
12%11%27%32%13%3
288
16th to endDay
17%10%23%28%15%4
330
June1st to 15thDay
14%12%23%28%14%5%
474
16th to endDay
8%16%22%29%21%3
461
July1st to 15thDay
6%12%30%30%17%2
305
16th to endDay
6%15%35%29%10%2
327
August1st to 15thDay
6%10%35%33%11%3
315
16th to endDay
8%12%30%26%15%6%
332
September1st to 15thDay
10%18%23%26%14%6%
315
16th to endDay
11%15%24%26%17%4
315
October1st to 15thDay
14%10%26%28%16%4
250
16th to endDay
9%9%18%42%16%2
144
November1st to 15thDay
9%10%20%36%20%2
135
16th to endDay
38%37%41%6%2
135
December1st to 15thDay
49%34%30%14%8%
99
16th to endDay
211%25%45%12%3
96
January1st to 15thNight
27%27%42%16%3
780
16th to endNight
3426%41%18%4
788
February1st to 15thNight
25%28%42%17%2
704
16th to endNight
2334%39%15%3
632
March1st to 15thNight
2334%42%14%2
720
16th to endNight
47%31%41%14%1
768
April1st to 15thNight
5%5%24%40%19%5%
692
16th to endNight
6%422%47%16%2
540
May1st to 15thNight
5%5%20%38%25%3
540
16th to endNight
10%5%15%33%31%4
440
June1st to 15thNight
8%315%44%25%2
360
16th to endNight
2411%46%31%3
360
July1st to 15thNight
15%48%39%4
340
16th to endNight
215%49%36%4
376
August1st to 15thNight
2110%45%37%2
539
16th to endNight
3210%44%35%3
607
September1st to 15thNight
5%111%35%36%9%
720
16th to endNight
8%211%35%32%8%
716
October1st to 15thNight
9%317%40%24%4
720
16th to endNight
5%5%19%46%17%4
768
November1st to 15thNight
5%6%25%45%14%1
760
16th to endNight
46%32%39%12%3
859
December1st to 15thNight
26%29%45%14%1
975
16th to endNight
35%33%41%13%2
968
Page generated at 2018-01-21 10:19:28. Version ac04

Copyright 2018 A. Danko


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