Wichita
Clear Sky Chart
History

This sumarizes the distribution of each different forecast outcome for the Wichita clear sky chart from 2005-11-05 to 2018-02-22.

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%
16552
26%
48895
16%
16506
55%
16506
38%
27366

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%
975
29%
2522
12%
970
47%
970
40%
1484
January16th to endNight
39%
1040
35%
2704
15%
1040
51%
1040
46%
1505
February1st to 15thNight
32%
900
22%
2428
9%
896
41%
896
32%
1522
February16th to endNight
32%
660
28%
1978
11%
660
45%
660
33%
1125
March1st to 15thNight
36%
576
25%
2016
15%
576
47%
576
30%
1104
March16th to endNight
33%
576
19%
2112
12%
576
43%
576
25%
1227
April1st to 15thNight
31%
539
22%
1926
14%
539
46%
539
29%
1063
April16th to endNight
33%
540
21%
1620
15%
540
44%
540
29%
986
May1st to 15thNight
39%
539
22%
1620
16%
539
49%
539
31%
967
May16th to endNight
49%
562
19%
1684
17%
561
55%
561
36%
983
June1st to 15thNight
55%
540
18%
1620
11%
540
61%
540
41%
868
June16th to endNight
64%
540
24%
1620
16%
540
70%
540
52%
797
July1st to 15thNight
72%
510
20%
1530
18%
510
74%
510
43%
815
July16th to endNight
77%
564
26%
1594
26%
531
79%
531
47%
819
August1st to 15thNight
77%
539
23%
1610
28%
536
78%
536
43%
867
August16th to endNight
71%
573
26%
1769
27%
573
74%
573
41%
944
September1st to 15thNight
58%
540
24%
1980
24%
540
65%
540
33%
1038
September16th to endNight
57%
537
32%
1980
28%
537
66%
537
37%
989
October1st to 15thNight
47%
627
30%
2067
23%
627
53%
627
34%
1128
October16th to endNight
45%
768
37%
2304
18%
768
59%
768
51%
1101
November1st to 15thNight
43%
917
29%
2437
12%
917
54%
917
45%
1348
November16th to endNight
40%
975
32%
2535
13%
975
52%
975
42%
1463
December1st to 15thNight
37%
975
27%
2535
11%
975
48%
975
39%
1514
December16th to endNight
37%
1040
28%
2704
13%
1040
47%
1040
34%
1709

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
9%42442445%7%51%
49356
Night
8%423323447%54%
49091
Cloud CoverDay
9%5%2442445%7%50%
49354
Night
8%423323347%54%
49091
TransparencyDay
32%413%27%18%4
49054
Night
29%312%27%21%5%
48896
SeeingDay
11%5%26%32%20%4
6316
Night
11%6%31%36%13%
16554

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
7%5%14423345%56%
1746
16th to endDay
8%5%13324447%54%
1872
February1st to 15thDay
7%7%26%423436%49%
1773
16th to endDay
8%6%1432345%6%52%
1642
March1st to 15thDay
11%6%25%424446%47%
1944
16th to endDay
16%8%25%423335%44%
2112
April1st to 15thDay
12%42443345%7%47%
2019
16th to endDay
15%6%25%5%33445%43%
2340
May1st to 15thDay
12%6%25%423447%45%
2331
16th to endDay
11%6%25%5%245%5%7%41%
2430
June1st to 15thDay
6%413425%45%8%53%
2340
16th to endDay
5%11232446%8%57%
2340
July1st to 15thDay
7%3135%25%5%6%10%47%
2340
16th to endDay
4214336%5%7%8%51%
2466
August1st to 15thDay
5%4245%35%5%6%9%47%
2340
16th to endDay
5%31442446%8%53%
2432
September1st to 15thDay
8%5%245%2445%6%50%
1980
16th to endDay
8%41332445%7%55%
1980
October1st to 15thDay
13%313322345%54%
1879
16th to endDay
7%423323345%59%
1920
November1st to 15thDay
6%314323437%59%
1748
16th to endDay
10%313312335%62%
1755
December1st to 15thDay
12%5%23313346%51%
1755
16th to endDay
10%8%45%424345%46%
1872
January1st to 15thNight
7%5%24324345%56%
2522
16th to endNight
7%32332322463%
2704
February1st to 15thNight
9%6%35%423336%49%
2418
16th to endNight
10%424323436%53%
1978
March1st to 15thNight
9%6%1442445%6%50%
2016
16th to endNight
16%6%23322346%47%
2112
April1st to 15thNight
13%413423348%49%
1926
16th to endNight
14%5%2342335%7%47%
1620
May1st to 15thNight
12%424422448%48%
1619
16th to endNight
8%4243345%7%9%47%
1683
June1st to 15thNight
431333345%11%53%
1620
16th to endNight
4122245%6%9%60%
1620
July1st to 15thNight
5%3133345%6%10%52%
1620
16th to endNight
331333447%12%52%
1702
August1st to 15thNight
32133346%6%10%52%
1620
16th to endNight
44144245%5%8%55%
1769
September1st to 15thNight
7%4245%23346%54%
1980
16th to endNight
7%31431347%7%55%
1980
October1st to 15thNight
13%42332233456%
2067
16th to endNight
6%312211235%68%
2304
November1st to 15thNight
7%313313347%60%
2437
16th to endNight
10%42222233460%
2535
December1st to 15thNight
9%6%23323347%53%
2535
16th to endNight
10%6%2442335%6%48%
2704

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
7%6%24423345%55%
1746
16th to endDay
7%6%1332335%7%53%
1872
February1st to 15thDay
8%7%25%433446%48%
1773
16th to endDay
9%6%1342245%7%51%
1642
March1st to 15thDay
11%6%25%423446%47%
1944
16th to endDay
16%7%35%423336%43%
2110
April1st to 15thDay
12%425%43345%7%46%
2019
16th to endDay
15%6%25%5%23446%43%
2340
May1st to 15thDay
12%6%25%423447%45%
2331
16th to endDay
11%6%35%5%345%5%8%41%
2430
June1st to 15thDay
6%414325%45%8%52%
2340
16th to endDay
5%21332446%8%56%
2340
July1st to 15thDay
7%3145%245%6%10%47%
2340
16th to endDay
4213436%5%7%9%50%
2466
August1st to 15thDay
5%4245%35%5%6%9%47%
2340
16th to endDay
5%31442445%9%52%
2432
September1st to 15thDay
8%5%35%42435%7%50%
1980
16th to endDay
8%313324446%55%
1980
October1st to 15thDay
13%41332335%5%54%
1879
16th to endDay
7%323324345%59%
1920
November1st to 15thDay
6%314323437%59%
1748
16th to endDay
10%322312335%62%
1755
December1st to 15thDay
12%6%2331335%6%51%
1755
16th to endDay
11%7%36%424346%45%
1872
January1st to 15thNight
7%5%24324346%55%
2522
16th to endNight
7%423313225%63%
2704
February1st to 15thNight
9%7%35%424346%49%
2418
16th to endNight
9%5%24324346%53%
1978
March1st to 15thNight
9%6%2441445%7%49%
2016
16th to endNight
16%6%23422336%47%
2112
April1st to 15thNight
12%424323348%49%
1926
16th to endNight
13%6%14324347%46%
1620
May1st to 15thNight
12%414423447%48%
1619
16th to endNight
8%4243335%7%8%47%
1683
June1st to 15thNight
43234245%5%10%53%
1620
16th to endNight
41122245%5%9%60%
1620
July1st to 15thNight
5%213335%5%6%10%53%
1620
16th to endNight
321242447%13%52%
1702
August1st to 15thNight
4213435%6%6%10%52%
1620
16th to endNight
441442345%8%55%
1769
September1st to 15thNight
7%425%423346%54%
1980
16th to endNight
6%31332346%8%55%
1980
October1st to 15thNight
12%423322335%55%
2067
16th to endNight
6%312212235%68%
2304
November1st to 15thNight
6%313213246%60%
2437
16th to endNight
10%422323335%59%
2535
December1st to 15thNight
9%6%23323347%52%
2535
16th to endNight
10%6%25%424346%47%
2704

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
31%213%31%19%2
1747
16th to endDay
29%214%31%18%3
1872
February1st to 15thDay
36%415%26%12%4
1774
16th to endDay
31%313%28%18%4
1642
March1st to 15thDay
37%310%24%19%4
1944
16th to endDay
43%311%24%14%2
2112
April1st to 15thDay
36%413%26%16%2
2019
16th to endDay
41%311%27%12%2
2340
May1st to 15thDay
37%412%22%20%1
2331
16th to endDay
40%5%14%25%12%1
2434
June1st to 15thDay
28%5%16%26%18%3
2340
16th to endDay
23%5%14%29%22%5%
2340
July1st to 15thDay
30%5%15%28%17%2
2201
16th to endDay
24%6%14%30%19%3
2311
August1st to 15thDay
30%6%15%26%15%5%
2326
16th to endDay
28%5%12%29%17%7%
2432
September1st to 15thDay
33%412%25%16%7%
1980
16th to endDay
28%312%30%20%4
1980
October1st to 15thDay
31%310%24%25%5%
1879
16th to endDay
26%210%28%26%6%
1920
November1st to 15thDay
25%311%26%24%8%
1748
16th to endDay
26%29%31%25%4
1755
December1st to 15thDay
34%213%31%16%1
1755
16th to endDay
40%311%25%15%3
1872
January1st to 15thNight
30%29%31%22%3
2522
16th to endNight
25%211%30%25%4
2704
February1st to 15thNight
36%314%25%15%4
2428
16th to endNight
32%212%27%18%6%
1978
March1st to 15thNight
33%310%25%20%7%
2016
16th to endNight
38%312%25%16%2
2112
April1st to 15thNight
34%311%24%22%3
1926
16th to endNight
38%313%21%18%4
1620
May1st to 15thNight
35%413%24%18%3
1620
16th to endNight
31%5%21%24%14%2
1685
June1st to 15thNight
25%418%29%18%2
1620
16th to endNight
18%5%14%32%23%6%
1620
July1st to 15thNight
24%5%13%29%23%3
1530
16th to endNight
23%314%32%23%2
1594
August1st to 15thNight
24%5%16%29%17%5%
1610
16th to endNight
25%5%13%26%23%6%
1769
September1st to 15thNight
30%312%25%17%9%
1980
16th to endNight
26%410%25%26%5%
1980
October1st to 15thNight
31%39%21%24%9%
2067
16th to endNight
20%18%29%32%7%
2304
November1st to 15thNight
24%310%25%26%9%
2437
16th to endNight
28%27%29%25%6%
2535
December1st to 15thNight
31%313%30%19%2
2535
16th to endNight
36%213%26%14%5%
2704

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
14%11%31%33%8%1
135
16th to endDay
11%8%45%29%31
144
February1st to 15thDay
8%14%51%21%4
135
16th to endDay
7%19%43%27%31
100
March1st to 15thDay
14%11%48%22%3
90
16th to endDay
17%12%37%25%6%1
96
April1st to 15thDay
16%12%34%26%9%
138
16th to endDay
21%9%39%21%6%1
450
May1st to 15thDay
14%9%32%30%10%3
468
16th to endDay
18%7%29%28%11%3
517
June1st to 15thDay
7%325%36%24%1
495
16th to endDay
6%221%41%23%4
495
July1st to 15thDay
9%213%37%32%4
475
16th to endDay
6%7%37%37%9%
515
August1st to 15thDay
6%10%41%35%5%
493
16th to endDay
7%113%34%36%6%
472
September1st to 15thDay
314%40%35%5%
135
16th to endDay
14%27%26%20%11%
135
October1st to 15thDay
10%5%32%31%11%7%
135
16th to endDay
5%9%38%28%15%3
144
November1st to 15thDay
10%429%34%14%6%
135
16th to endDay
15%19%31%25%7%1
135
December1st to 15thDay
11%10%45%24%6%2
135
16th to endDay
13%12%44%22%6%
144
January1st to 15thNight
10%9%38%33%7%
975
16th to endNight
9%7%39%36%6%
1040
February1st to 15thNight
13%10%37%33%5%
900
16th to endNight
13%13%37%31%4
660
March1st to 15thNight
13%8%36%35%6%
576
16th to endNight
19%9%35%29%5%
576
April1st to 15thNight
17%9%39%26%7%
539
16th to endNight
17%9%36%29%7%
540
May1st to 15thNight
14%6%35%33%10%
540
16th to endNight
9%5%30%36%15%2
563
June1st to 15thNight
6%428%39%19%
540
16th to endNight
4225%47%18%
540
July1st to 15thNight
6%13%54%22%1
510
16th to endNight
5%18%47%34%2
564
August1st to 15thNight
5%8%52%31%1
539
16th to endNight
6%111%42%34%2
573
September1st to 15thNight
10%221%39%23%3
540
16th to endNight
10%423%38%21%2
537
October1st to 15thNight
16%428%29%18%2
627
16th to endNight
8%6%37%35%11%
768
November1st to 15thNight
9%7%35%34%12%
917
16th to endNight
13%9%34%34%8%
975
December1st to 15thNight
14%8%36%34%6%
975
16th to endNight
14%7%35%37%4
1040
Page generated at 2018-02-23 10:21:33. Version ac04

Copyright 2018 A. Danko


Wichita Clear Sky Chart |Charts Home