Kinsley
Clear Sky Chart
History

This sumarizes the distribution of each different forecast outcome for the Kinsley clear sky chart from 2005-11-05 to 2017-10-06.

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
42%
15913
27%
46986
15%
15868
53%
15868
39%
25940

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
36%
900
30%
2327
12%
895
47%
895
41%
1347
January16th to endNight
36%
960
34%
2496
13%
960
50%
960
45%
1388
February1st to 15thNight
32%
745
22%
2154
10%
742
41%
742
31%
1302
February16th to endNight
30%
632
31%
1894
11%
632
47%
632
35%
1064
March1st to 15thNight
34%
645
27%
2085
12%
645
48%
645
34%
1117
March16th to endNight
30%
576
22%
2112
13%
576
43%
576
26%
1168
April1st to 15thNight
28%
539
23%
1844
12%
539
45%
539
29%
1021
April16th to endNight
31%
540
21%
1659
12%
540
45%
540
27%
1018
May1st to 15thNight
34%
540
21%
1620
15%
540
46%
540
32%
945
May16th to endNight
41%
562
19%
1684
13%
561
51%
561
32%
993
June1st to 15thNight
43%
540
20%
1620
9%
540
53%
540
44%
837
June16th to endNight
52%
540
26%
1519
14%
540
61%
540
54%
754
July1st to 15thNight
64%
510
21%
1473
15%
510
69%
510
47%
786
July16th to endNight
64%
564
25%
1594
22%
531
69%
531
43%
859
August1st to 15thNight
66%
539
21%
1610
21%
536
70%
536
38%
903
August16th to endNight
63%
573
26%
1860
25%
573
71%
573
41%
986
September1st to 15thNight
54%
540
24%
1932
20%
540
64%
540
34%
1024
September16th to endNight
51%
537
32%
1980
26%
537
62%
537
37%
980
October1st to 15thNight
42%
532
34%
1900
25%
532
54%
532
36%
959
October16th to endNight
45%
764
33%
2172
16%
764
56%
764
51%
1101
November1st to 15thNight
46%
875
33%
2275
12%
875
57%
875
52%
1187
November16th to endNight
42%
900
33%
2340
14%
900
53%
900
47%
1283
December1st to 15thNight
35%
900
26%
2340
10%
900
46%
900
38%
1405
December16th to endNight
37%
960
31%
2496
15%
960
48%
960
36%
1513

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
7%423323447%55%
48192
Night
7%42332335%7%56%
47182
Cloud CoverDay
7%423323447%55%
48190
Night
7%42332335%7%56%
47182
TransparencyDay
28%5%12%26%20%5%
47890
Night
26%5%12%25%22%7%
46987
SeeingDay
9%7%30%33%15%2
5899
Night
8%8%36%35%10%
15915

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
45%23212346%61%
1611
16th to endDay
6%5%23423345%57%
1728
February1st to 15thDay
5%5%36%433345%52%
1717
16th to endDay
5%413423346%59%
1580
March1st to 15thDay
6%6%24324447%53%
1875
16th to endDay
12%6%24313237%51%
2112
April1st to 15thDay
11%5%24323347%51%
2102
16th to endDay
13%5%25%324346%46%
2301
May1st to 15thDay
9%42331345%7%53%
2331
16th to endDay
9%3235%3446%8%48%
2430
June1st to 15thDay
5%41332445%7%57%
2340
16th to endDay
321231345%8%62%
2430
July1st to 15thDay
5%3135%35%5%6%8%50%
2388
16th to endDay
5%213335%45%9%53%
2466
August1st to 15thDay
5%314445%7%6%9%48%
2340
16th to endDay
6%41342445%8%55%
2339
September1st to 15thDay
7%3245%2346%6%52%
2028
16th to endDay
5%413324446%59%
1980
October1st to 15thDay
12%5%23212335%58%
1846
16th to endDay
7%422212236%64%
1697
November1st to 15thDay
5%213222346%65%
1583
16th to endDay
7%413212335%65%
1620
December1st to 15thDay
8%7%33312346%53%
1620
16th to endDay
8%6%43423336%53%
1728
January1st to 15thNight
5%5%23423335%59%
2327
16th to endNight
5%423313235%64%
2496
February1st to 15thNight
7%7%36%423336%50%
2144
16th to endNight
7%425%324445%57%
1894
March1st to 15thNight
7%423324446%56%
2085
16th to endNight
11%5%24423345%52%
2112
April1st to 15thNight
9%41322446%7%51%
1844
16th to endNight
12%5%25%32336%6%46%
1659
May1st to 15thNight
9%42342345%8%50%
1619
16th to endNight
7%414225%5%8%10%47%
1683
June1st to 15thNight
5%21232448%10%56%
1620
16th to endNight
221221347%9%62%
1519
July1st to 15thNight
4212425%5%7%9%55%
1563
16th to endNight
5%3134245%411%54%
1702
August1st to 15thNight
43244345%7%10%49%
1620
16th to endNight
5%31432346%7%57%
1860
September1st to 15thNight
7%314423449%53%
1932
16th to endNight
431432445%6%59%
1980
October1st to 15thNight
11%412313235%61%
1900
16th to endNight
6%31221223468%
2172
November1st to 15thNight
4212212346%67%
2275
16th to endNight
6%312323345%62%
2340
December1st to 15thNight
7%5%2432335%7%53%
2340
16th to endNight
9%6%3422235%7%52%
2496

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 15thDay
45%24212446%61%
1611
16th to endDay
6%5%24313345%57%
1728
February1st to 15thDay
5%5%36%433345%52%
1717
16th to endDay
5%413423346%59%
1580
March1st to 15thDay
6%5%24334447%53%
1875
16th to endDay
12%6%24322336%51%
2110
April1st to 15thDay
11%5%34323346%51%
2102
16th to endDay
13%5%25%424346%46%
2301
May1st to 15thDay
9%42431345%7%53%
2331
16th to endDay
9%3234345%6%8%48%
2430
June1st to 15thDay
441332445%7%57%
2340
16th to endDay
321231345%7%62%
2430
July1st to 15thDay
5%3235%35%5%6%8%49%
2388
16th to endDay
5%21343445%9%53%
2466
August1st to 15thDay
5%314436%6%6%10%48%
2340
16th to endDay
6%41342435%8%54%
2339
September1st to 15thDay
7%42442345%6%53%
2028
16th to endDay
5%413324346%59%
1980
October1st to 15thDay
12%5%13212335%58%
1846
16th to endDay
7%412222335%64%
1697
November1st to 15thDay
5%312222346%64%
1583
16th to endDay
7%313212335%65%
1620
December1st to 15thDay
8%7%34312446%53%
1620
16th to endDay
8%7%345%13336%52%
1728
January1st to 15thNight
5%5%24423335%59%
2327
16th to endNight
5%423323335%64%
2496
February1st to 15thNight
7%6%36%433346%51%
2144
16th to endNight
7%424323345%57%
1894
March1st to 15thNight
7%423324446%56%
2085
16th to endNight
11%5%24423345%52%
2112
April1st to 15thNight
9%41431446%7%51%
1844
16th to endNight
13%5%25%32336%6%46%
1659
May1st to 15thNight
9%5%2332336%8%50%
1619
16th to endNight
8%3142245%7%10%47%
1683
June1st to 15thNight
5%3231447%10%55%
1620
16th to endNight
221221347%10%61%
1519
July1st to 15thNight
42124245%7%9%55%
1563
16th to endNight
5%31332345%10%54%
1702
August1st to 15thNight
43243345%7%10%49%
1620
16th to endNight
5%31341446%7%57%
1860
September1st to 15thNight
7%32342345%9%53%
1932
16th to endNight
4314334445%59%
1980
October1st to 15thNight
11%412312236%60%
1900
16th to endNight
6%31221323468%
2172
November1st to 15thNight
4213212346%67%
2275
16th to endNight
6%312223346%62%
2340
December1st to 15thNight
7%5%2432335%7%53%
2340
16th to endNight
9%6%3422235%7%52%
2496

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
24%314%30%22%4
1612
16th to endDay
28%313%31%19%4
1728
February1st to 15thDay
33%5%14%27%12%6%
1718
16th to endDay
25%414%27%20%7%
1580
March1st to 15thDay
31%410%24%22%6%
1875
16th to endDay
34%5%12%24%19%4
2112
April1st to 15thDay
33%5%10%26%17%6%
2102
16th to endDay
37%5%9%28%16%2
2301
May1st to 15thDay
29%5%13%25%22%3
2331
16th to endDay
31%8%14%27%13%3
2434
June1st to 15thDay
25%5%17%26%18%6%
2340
16th to endDay
19%5%12%27%27%8%
2430
July1st to 15thDay
27%8%11%25%23%3
2249
16th to endDay
25%6%13%26%22%4
2311
August1st to 15thDay
28%8%17%24%14%6%
2326
16th to endDay
26%5%10%28%21%7%
2339
September1st to 15thDay
30%5%12%25%16%9%
2028
16th to endDay
25%6%9%28%24%5%
1980
October1st to 15thDay
29%312%22%24%7%
1846
16th to endDay
23%210%27%27%8%
1697
November1st to 15thDay
20%47%26%29%11%
1583
16th to endDay
23%28%26%29%9%
1620
December1st to 15thDay
32%412%29%17%2
1620
16th to endDay
34%311%26%21%3
1728
January1st to 15thNight
27%310%29%23%5%
2327
16th to endNight
24%39%28%27%6%
2496
February1st to 15thNight
35%413%22%16%6%
2154
16th to endNight
29%48%26%21%9%
1894
March1st to 15thNight
29%49%23%23%9%
2085
16th to endNight
34%412%23%19%4
2112
April1st to 15thNight
29%6%12%24%21%5%
1844
16th to endNight
36%6%14%21%18%3
1659
May1st to 15thNight
30%6%14%23%20%5%
1620
16th to endNight
28%9%18%24%13%4
1685
June1st to 15thNight
20%6%20%28%17%6%
1620
16th to endNight
17%414%29%26%7%
1519
July1st to 15thNight
21%6%12%29%23%5%
1473
16th to endNight
22%8%12%28%23%4
1594
August1st to 15thNight
27%7%16%28%15%5%
1610
16th to endNight
24%6%12%25%22%8%
1860
September1st to 15thNight
28%6%12%26%17%9%
1932
16th to endNight
24%5%10%22%28%8%
1980
October1st to 15thNight
26%310%22%28%8%
1900
16th to endNight
20%37%25%31%12%
2172
November1st to 15thNight
18%311%21%29%15%
2275
16th to endNight
23%27%26%26%12%
2340
December1st to 15thNight
29%5%12%28%20%3
2340
16th to endNight
31%412%25%19%6%
2496

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
11%10%38%32%7%
90
16th to endDay
15%10%47%18%7%
96
February1st to 15thDay
5%10%46%30%6%1
90
16th to endDay
219%43%23%9%1
81
March1st to 15thDay
410%58%21%5%
90
16th to endDay
19%12%36%21%9%
96
April1st to 15thDay
13%22%34%23%6%
221
16th to endDay
18%15%40%19%6%
411
May1st to 15thDay
10%12%35%27%12%1
468
16th to endDay
13%10%32%29%11%2
517
June1st to 15thDay
5%6%35%35%13%4
495
16th to endDay
3431%40%17%3
495
July1st to 15thDay
7%120%42%22%5%
475
16th to endDay
6%214%42%28%6%
515
August1st to 15thDay
7%118%44%24%2
493
16th to endDay
7%320%42%22%2
379
September1st to 15thDay
2230%39%21%3
183
16th to endDay
9%6%28%31%17%6%
135
October1st to 15thDay
12%439%33%10%
107
16th to endDay
7%140%32%15%3
96
November1st to 15thDay
15%432%28%14%4
90
16th to endDay
18%11%41%16%12%
90
December1st to 15thDay
12%13%46%17%7%2
90
16th to endDay
16%18%43%17%3
96
January1st to 15thNight
7%11%40%33%6%1
900
16th to endNight
7%9%41%32%8%
960
February1st to 15thNight
10%10%41%31%5%
746
16th to endNight
8%11%45%29%4
632
March1st to 15thNight
9%12%41%29%7%
645
16th to endNight
14%14%38%26%5%
576
April1st to 15thNight
12%14%41%26%5%
539
16th to endNight
15%13%37%29%4
540
May1st to 15thNight
10%12%40%28%7%
540
16th to endNight
9%9%35%31%12%
563
June1st to 15thNight
6%6%41%33%10%1
540
16th to endNight
26%35%42%12%
540
July1st to 15thNight
4224%50%18%
510
16th to endNight
6%21%49%21%
564
August1st to 15thNight
6%118%55%17%
539
16th to endNight
6%124%46%19%1
573
September1st to 15thNight
9%327%40%16%2
540
16th to endNight
6%5%33%37%16%
537
October1st to 15thNight
12%8%33%33%11%1
532
16th to endNight
7%7%38%33%13%
764
November1st to 15thNight
6%8%36%36%11%
875
16th to endNight
7%11%37%34%8%
900
December1st to 15thNight
10%12%38%33%4
900
16th to endNight
11%10%36%33%7%
960
Page generated at 2017-10-07 13:07:44. Version ac04

Copyright 2017 A. Danko


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