Raymore-Peculiar High School
Clear Sky Chart
History

This sumarizes the distribution of each different forecast outcome for the Raymore-Peculiar High School 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
43%
16432
23%
48573
15%
16385
51%
16385
32%
29081

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
30%
975
22%
2522
8%
970
40%
970
33%
1578
January16th to endNight
29%
985
26%
2561
10%
985
39%
985
33%
1619
February1st to 15thNight
25%
879
17%
2288
6%
875
31%
875
25%
1569
February16th to endNight
27%
666
25%
1928
10%
666
37%
666
30%
1189
March1st to 15thNight
32%
540
22%
1980
14%
540
44%
540
25%
1163
March16th to endNight
26%
576
16%
2112
10%
576
35%
576
18%
1374
April1st to 15thNight
35%
539
22%
1845
16%
539
46%
539
28%
1064
April16th to endNight
34%
540
21%
1729
15%
540
45%
540
24%
1101
May1st to 15thNight
41%
539
20%
1620
15%
539
49%
539
26%
1045
May16th to endNight
49%
563
20%
1637
15%
561
55%
561
32%
1005
June1st to 15thNight
64%
540
20%
1440
13%
540
68%
540
42%
839
June16th to endNight
66%
540
25%
1440
15%
540
70%
540
52%
780
July1st to 15thNight
69%
510
17%
1524
16%
510
70%
510
40%
859
July16th to endNight
75%
564
25%
1594
26%
531
77%
531
47%
821
August1st to 15thNight
80%
539
26%
1610
30%
536
81%
536
45%
845
August16th to endNight
73%
573
27%
1827
33%
573
75%
573
40%
977
September1st to 15thNight
63%
540
27%
1836
30%
540
66%
540
33%
1026
September16th to endNight
60%
540
30%
1983
27%
540
69%
540
34%
1023
October1st to 15thNight
50%
720
27%
2160
20%
720
54%
720
36%
1236
October16th to endNight
39%
768
30%
2304
15%
768
51%
768
36%
1289
November1st to 15thNight
39%
806
28%
2326
14%
806
51%
806
35%
1327
November16th to endNight
32%
975
26%
2720
11%
975
44%
975
32%
1635
December1st to 15thNight
31%
975
20%
2730
8%
975
40%
975
28%
1750
December16th to endNight
28%
1040
22%
2857
8%
1040
39%
1040
24%
1967

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
12%6%25%42445%7%43%
48944
Night
11%5%24424446%49%
48768
TransparencyDay
39%413%25%14%2
48644
Night
35%412%27%17%3
48573
SeeingDay
14%6%24%29%20%5%
6274
Night
14%7%29%32%14%1
16434

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 15thDay
11%6%25%5%35%34446%
1746
16th to endDay
12%8%45%424346%42%
1767
February1st to 15thDay
12%8%6%5%425%446%39%
1575
16th to endDay
12%9%47%413347%40%
1556
March1st to 15thDay
12%9%47%5%25%45%7%35%
1980
16th to endDay
22%9%45%5%2333434%
2110
April1st to 15thDay
15%8%3443345%6%41%
2103
16th to endDay
19%9%26%5%25%346%33%
2229
May1st to 15thDay
18%7%36%5%24447%35%
2331
16th to endDay
14%5%26%5%35%5%5%8%36%
2475
June1st to 15thDay
8%5%25%5%35%5%6%9%43%
2520
16th to endDay
5%313336%5%7%9%50%
2520
July1st to 15thDay
8%31442446%10%46%
2341
16th to endDay
5%414436%6%7%9%45%
2466
August1st to 15thDay
7%3244345%6%10%46%
2340
16th to endDay
7%425%5%245%6%8%47%
2375
September1st to 15thDay
11%5%2442335%7%48%
2121
16th to endDay
8%41443445%7%50%
1965
October1st to 15thDay
14%6%2322235%6%49%
1800
16th to endDay
11%424422346%52%
1920
November1st to 15thDay
10%6%24313445%52%
1859
16th to endDay
15%6%24223335%50%
1569
December1st to 15thDay
14%7%35%5%23347%41%
1560
16th to endDay
14%7%47%5%24346%38%
1716
January1st to 15thNight
9%6%24424445%50%
2522
16th to endNight
8%6%35%5%24435%49%
2561
February1st to 15thNight
12%8%46%5%34445%40%
2278
16th to endNight
11%6%26%423347%47%
1928
March1st to 15thNight
11%7%35%423346%46%
1980
16th to endNight
19%7%35%423447%37%
2112
April1st to 15thNight
12%6%2442335%5%50%
1845
16th to endNight
17%6%35%423345%43%
1729
May1st to 15thNight
13%6%24425%5%47%43%
1619
16th to endNight
12%5%2441446%7%47%
1635
June1st to 15thNight
5%314336%47%9%52%
1440
16th to endNight
411232346%11%58%
1440
July1st to 15thNight
6%323325%5%5%10%50%
1614
16th to endNight
42133246%6%9%54%
1702
August1st to 15thNight
4212325%5%6%9%56%
1620
16th to endNight
5%32432435%6%57%
1827
September1st to 15thNight
9%5%1442345%6%50%
1836
16th to endNight
6%3135%335%5%7%53%
1983
October1st to 15thNight
14%413323335%54%
2160
16th to endNight
10%414323335%57%
2304
November1st to 15thNight
10%424312336%55%
2326
16th to endNight
13%5%33323345%51%
2720
December1st to 15thNight
15%7%25%324346%44%
2730
16th to endNight
14%10%36%5%23436%39%
2857

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
40%311%24%17%1
1747
16th to endDay
41%316%24%12%1
1767
February1st to 15thDay
46%314%23%9%1
1576
16th to endDay
43%314%23%12%2
1556
March1st to 15thDay
47%411%22%11%1
1980
16th to endDay
53%312%18%9%1
2112
April1st to 15thDay
44%312%24%14%
2103
16th to endDay
51%411%19%11%
2229
May1st to 15thDay
49%5%10%22%11%
2331
16th to endDay
43%6%15%22%10%
2479
June1st to 15thDay
35%6%15%28%13%1
2520
16th to endDay
26%6%17%30%16%2
2520
July1st to 15thDay
32%6%17%28%12%2
2202
16th to endDay
29%7%14%34%13%1
2311
August1st to 15thDay
31%6%16%27%16%1
2326
16th to endDay
32%6%13%25%16%5%
2375
September1st to 15thDay
34%412%25%18%4
2121
16th to endDay
32%412%29%18%1
1965
October1st to 15thDay
35%39%25%20%5%
1800
16th to endDay
33%211%26%20%4
1920
November1st to 15thDay
33%311%26%19%5%
1859
16th to endDay
37%39%28%20%
1569
December1st to 15thDay
43%314%26%11%
1560
16th to endDay
46%414%20%11%2
1716
January1st to 15thNight
36%314%27%17%1
2522
16th to endNight
37%313%27%16%2
2561
February1st to 15thNight
45%312%24%12%1
2288
16th to endNight
37%312%25%18%2
1928
March1st to 15thNight
39%311%25%16%4
1980
16th to endNight
46%412%23%10%1
2112
April1st to 15thNight
36%39%26%20%3
1845
16th to endNight
43%310%24%16%1
1729
May1st to 15thNight
40%6%11%24%15%
1620
16th to endNight
34%6%16%27%12%2
1637
June1st to 15thNight
27%5%16%31%16%2
1440
16th to endNight
19%6%15%31%23%3
1440
July1st to 15thNight
28%5%13%33%16%3
1524
16th to endNight
22%5%14%35%20%2
1594
August1st to 15thNight
23%5%14%34%19%2
1610
16th to endNight
27%49%26%25%6%
1827
September1st to 15thNight
32%49%25%20%7%
1836
16th to endNight
28%49%31%21%3
1983
October1st to 15thNight
32%38%26%21%7%
2160
16th to endNight
30%38%28%23%5%
2304
November1st to 15thNight
31%311%23%21%7%
2326
16th to endNight
35%28%30%20%2
2720
December1st to 15thNight
40%314%26%13%
2730
16th to endNight
46%412%21%11%3
2857

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
27%9%33%23%5%
135
16th to endDay
17%11%41%22%5%
109
February1st to 15thDay
6%23%41%23%5%
90
16th to endDay
17%18%39%14%8%1
81
March1st to 15thDay
23%16%48%8%2
90
16th to endDay
32%12%32%18%4
96
April1st to 15thDay
19%10%31%26%10%
222
16th to endDay
25%12%30%20%10%1
339
May1st to 15thDay
19%7%34%24%12%1
468
16th to endDay
19%5%27%31%11%5%
517
June1st to 15thDay
10%422%33%22%7%
495
16th to endDay
5%331%33%22%4
495
July1st to 15thDay
13%214%34%29%6%
475
16th to endDay
5%10%33%40%9%
515
August1st to 15thDay
8%18%36%38%6%
493
16th to endDay
9%113%29%35%10%
415
September1st to 15thDay
9%211%36%31%7%
276
16th to endDay
11%222%40%13%10%
135
October1st to 15thDay
14%6%32%28%11%5%
135
16th to endDay
9%9%40%30%9%
144
November1st to 15thDay
16%8%25%28%13%7%
135
16th to endDay
28%12%29%18%9%
135
December1st to 15thDay
15%16%41%19%42
135
16th to endDay
20%18%38%20%2
144
January1st to 15thNight
14%10%40%27%6%
975
16th to endNight
11%12%41%28%5%
985
February1st to 15thNight
15%11%39%29%3
880
16th to endNight
15%13%40%25%4
666
March1st to 15thNight
16%9%36%29%6%
540
16th to endNight
23%8%37%24%5%
576
April1st to 15thNight
16%11%33%30%7%
539
16th to endNight
21%7%32%29%8%
540
May1st to 15thNight
15%5%30%33%13%1
540
16th to endNight
15%425%36%15%2
563
June1st to 15thNight
7%319%46%21%2
540
16th to endNight
4124%46%21%1
540
July1st to 15thNight
8%112%46%28%3
510
16th to endNight
5%9%39%42%3
564
August1st to 15thNight
416%44%40%2
539
16th to endNight
6%38%37%38%5%
573
September1st to 15thNight
12%312%40%26%4
540
16th to endNight
8%220%37%25%5%
540
October1st to 15thNight
16%424%33%17%2
720
16th to endNight
13%8%36%28%13%
768
November1st to 15thNight
14%8%33%28%13%
806
16th to endNight
18%9%37%27%6%
975
December1st to 15thNight
19%10%33%29%5%
975
16th to endNight
20%9%35%29%5%
1040
Page generated at 2018-01-21 11:19:27. Version ac04

Copyright 2018 A. Danko


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