Stroudsburg
Clear Sky Chart
History

This sumarizes the distribution of each different forecast outcome for the Stroudsburg clear sky chart from 2005-11-05 to 2018-04-23.

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
37%
15874
19%
49533
11%
15843
46%
15843
23%
31958

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
25%
780
18%
2716
8%
776
38%
776
18%
1759
January16th to endNight
23%
832
20%
2767
7%
832
39%
832
21%
1748
February1st to 15thNight
19%
764
16%
2462
5%
761
34%
761
18%
1654
February16th to endNight
22%
683
24%
2049
9%
683
39%
683
20%
1344
March1st to 15thNight
23%
780
18%
2281
7%
780
36%
780
21%
1517
March16th to endNight
26%
832
22%
2194
8%
832
37%
832
26%
1461
April1st to 15thNight
25%
778
16%
1946
5%
778
31%
778
24%
1375
April16th to endNight
34%
743
18%
1857
6%
743
39%
743
29%
1259
May1st to 15thNight
37%
468
18%
1548
11%
468
45%
468
19%
1039
May16th to endNight
47%
374
15%
1497
13%
374
54%
374
20%
937
June1st to 15thNight
47%
360
15%
1440
15%
360
54%
360
19%
911
June16th to endNight
61%
360
15%
1440
20%
360
66%
360
26%
815
July1st to 15thNight
60%
340
12%
1360
17%
340
62%
340
20%
832
July16th to endNight
65%
376
15%
1418
18%
354
69%
354
27%
792
August1st to 15thNight
64%
563
17%
1634
13%
561
66%
561
31%
1036
August16th to endNight
60%
764
20%
1910
12%
764
62%
764
33%
1272
September1st to 15thNight
50%
720
22%
1800
12%
720
54%
720
34%
1175
September16th to endNight
56%
717
27%
1939
21%
717
61%
717
35%
1196
October1st to 15thNight
44%
720
19%
2158
16%
720
49%
720
26%
1381
October16th to endNight
36%
768
23%
2361
15%
768
49%
768
28%
1449
November1st to 15thNight
37%
760
20%
2472
12%
760
48%
760
24%
1537
November16th to endNight
33%
780
21%
2642
13%
780
45%
780
22%
1654
December1st to 15thNight
27%
780
13%
2730
6%
780
37%
780
16%
1883
December16th to endNight
22%
832
17%
2912
5%
832
38%
832
17%
1932

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
15%6%25%5%3445%7%38%
49988
Night
16%5%2442445%6%42%
49703
Cloud CoverDay
16%6%25%5%3445%7%38%
49997
Night
16%5%2442445%6%42%
49709
TransparencyDay
44%6%12%20%14%1
49675
Night
41%6%13%22%15%1
49533
SeeingDay
20%10%25%24%14%5%
6396
Night
19%8%29%30%11%
15875

By Month

Percentage Cloud Cover NE (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
13%7%36%5%35%5%45%39%
1552
16th to endDay
13%6%35%5%345%5%6%37%
1807
February1st to 15thDay
14%8%37%5%345%6%6%34%
1728
16th to endDay
16%7%36%6%35%435%37%
1710
March1st to 15thDay
16%7%35%6%3445%6%35%
1998
16th to endDay
16%7%36%5%34336%39%
2382
April1st to 15thDay
18%7%35%42345%5%37%
2332
16th to endDay
14%6%245%3345%5%43%
2218
May1st to 15thDay
21%6%245%3445%6%34%
2410
16th to endDay
17%6%35%426%448%35%
2618
June1st to 15thDay
16%425%6%35%46%9%33%
2520
16th to endDay
13%6%25%5%35%46%7%37%
2520
July1st to 15thDay
11%5%25%6%36%6%6%9%35%
2520
16th to endDay
11%5%25%6%45%5%6%9%37%
2654
August1st to 15thDay
14%5%25%6%36%6%7%7%34%
2300
16th to endDay
13%4245%34448%43%
2292
September1st to 15thDay
15%425%434447%43%
2160
16th to endDay
14%4245%3445%6%45%
2020
October1st to 15thDay
18%6%25%324347%41%
1800
16th to endDay
20%423434446%41%
1863
November1st to 15thDay
17%8%24422235%45%
1716
16th to endDay
18%42441245%6%44%
1644
December1st to 15thDay
16%8%35%5%2445%6%35%
1560
16th to endDay
18%8%35%43446%6%33%
1664
January1st to 15thNight
16%6%244345%5%6%39%
2716
16th to endNight
14%7%2442435%6%42%
2767
February1st to 15thNight
14%7%36%6%24447%38%
2461
16th to endNight
16%6%45%42445%5%42%
2049
March1st to 15thNight
17%6%35%32335%6%42%
2268
16th to endNight
16%6%25%324446%42%
2194
April1st to 15thNight
17%5%25%5%2445%6%38%
1946
16th to endNight
18%42431345%6%43%
1857
May1st to 15thNight
19%6%245%235%5%5%39%
1548
16th to endNight
16%5%244335%5%6%42%
1495
June1st to 15thNight
18%4134245%5%7%41%
1440
16th to endNight
10%4134246%7%9%45%
1440
July1st to 15thNight
11%425%435%46%9%41%
1440
16th to endNight
8%3244345%7%10%44%
1514
August1st to 15thNight
11%42443347%8%45%
1644
16th to endNight
13%4135%245%5%8%44%
1910
September1st to 15thNight
14%5%2442335%6%47%
1800
16th to endNight
12%5%14422346%50%
1939
October1st to 15thNight
19%424423436%44%
2158
16th to endNight
19%5%23312346%46%
2361
November1st to 15thNight
15%6%24324346%45%
2472
16th to endNight
16%5%2432435%7%42%
2642
December1st to 15thNight
19%7%35%445%5%5%6%34%
2730
16th to endNight
18%7%24435%446%38%
2912

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
13%7%35%5%35%445%39%
1552
16th to endDay
13%7%35%5%35%5%5%6%37%
1807
February1st to 15thDay
15%7%37%5%35%45%7%34%
1728
16th to endDay
17%6%46%7%25%335%36%
1710
March1st to 15thDay
16%7%35%6%3445%6%35%
2008
16th to endDay
16%7%26%5%24336%39%
2381
April1st to 15thDay
19%7%35%423445%38%
2332
16th to endDay
14%5%25%5%3345%5%43%
2218
May1st to 15thDay
21%6%15%5%345%46%34%
2410
16th to endDay
17%6%26%436%45%8%35%
2618
June1st to 15thDay
16%425%6%45%5%6%9%33%
2520
16th to endDay
13%5%25%7%35%45%7%38%
2520
July1st to 15thDay
11%6%25%6%45%6%6%9%35%
2520
16th to endDay
11%425%6%36%5%7%9%37%
2654
August1st to 15thDay
13%6%25%6%36%6%7%6%34%
2300
16th to endDay
13%5%25%5%25%35%7%43%
2292
September1st to 15thDay
15%5%25%434347%43%
2160
16th to endDay
14%425%424447%44%
2020
October1st to 15thDay
18%6%15%423447%41%
1800
16th to endDay
19%5%23434446%41%
1863
November1st to 15thDay
17%8%24323235%45%
1716
16th to endDay
18%42442335%6%44%
1644
December1st to 15thDay
17%8%34435%36%6%35%
1560
16th to endDay
18%9%45%4345%46%33%
1664
January1st to 15thNight
17%6%24434447%39%
2716
16th to endNight
15%8%34424346%42%
2767
February1st to 15thNight
13%8%37%5%34446%38%
2454
16th to endNight
16%5%35%42445%5%42%
2049
March1st to 15thNight
17%6%35%324345%42%
2281
16th to endNight
16%6%24423446%42%
2194
April1st to 15thNight
17%5%345%2446%6%38%
1946
16th to endNight
18%42432445%5%43%
1857
May1st to 15thNight
20%5%344245%5%5%38%
1548
16th to endNight
16%5%245%3445%7%41%
1495
June1st to 15thNight
18%42343445%7%41%
1440
16th to endNight
10%4134236%6%9%45%
1440
July1st to 15thNight
11%4245%45%5%6%9%40%
1440
16th to endNight
9%4144345%7%10%44%
1514
August1st to 15thNight
11%425%3335%7%7%45%
1644
16th to endNight
13%4135%245%5%8%43%
1910
September1st to 15thNight
14%5%2442335%6%47%
1800
16th to endNight
12%5%14422447%50%
1939
October1st to 15thNight
19%424424336%44%
2158
16th to endNight
19%5%23213346%46%
2361
November1st to 15thNight
15%6%34414445%46%
2472
16th to endNight
16%5%2442445%7%41%
2642
December1st to 15thNight
19%7%25%5%35%5%5%5%34%
2730
16th to endNight
18%7%25%434446%38%
2912

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
45%6%11%22%10%3
1553
16th to endDay
45%5%14%21%11%1
1807
February1st to 15thDay
49%5%12%19%11%1
1730
16th to endDay
49%5%10%23%9%1
1710
March1st to 15thDay
47%5%14%18%11%1
2008
16th to endDay
47%410%19%16%2
2382
April1st to 15thDay
47%5%9%21%11%4
2332
16th to endDay
40%5%10%20%19%3
2218
May1st to 15thDay
48%6%10%18%14%2
2410
16th to endDay
47%7%12%18%13%1
2622
June1st to 15thDay
46%8%14%20%9%
2520
16th to endDay
44%7%13%23%10%1
2520
July1st to 15thDay
43%7%12%20%14%1
2371
16th to endDay
40%8%13%22%12%1
2487
August1st to 15thDay
45%7%13%18%14%
2286
16th to endDay
39%5%9%24%18%2
2292
September1st to 15thDay
41%5%11%20%20%1
2160
16th to endDay
39%5%8%21%22%3
2020
October1st to 15thDay
42%6%13%20%15%1
1800
16th to endDay
43%5%11%24%14%1
1863
November1st to 15thDay
43%314%19%15%3
1716
16th to endDay
40%412%25%14%1
1644
December1st to 15thDay
48%5%16%18%10%
1560
16th to endDay
50%5%15%16%11%
1664
January1st to 15thNight
43%6%13%20%12%2
2716
16th to endNight
42%413%24%13%1
2767
February1st to 15thNight
46%5%13%19%11%2
2462
16th to endNight
42%5%9%24%15%2
2049
March1st to 15thNight
43%5%13%21%12%2
2281
16th to endNight
41%5%11%21%17%2
2194
April1st to 15thNight
44%6%11%20%14%2
1946
16th to endNight
39%6%9%20%21%2
1857
May1st to 15thNight
45%7%9%19%16%1
1548
16th to endNight
41%7%15%17%14%3
1497
June1st to 15thNight
42%7%11%22%14%
1440
16th to endNight
32%9%15%29%12%
1440
July1st to 15thNight
38%9%13%23%13%1
1360
16th to endNight
31%8%19%23%13%2
1418
August1st to 15thNight
34%9%15%22%16%1
1634
16th to endNight
36%7%11%21%20%2
1910
September1st to 15thNight
37%5%12%22%20%1
1800
16th to endNight
34%49%21%27%2
1939
October1st to 15thNight
41%412%23%15%1
2158
16th to endNight
38%414%27%14%
2361
November1st to 15thNight
40%5%13%21%15%3
2472
16th to endNight
41%5%13%25%13%1
2642
December1st to 15thNight
49%6%14%18%10%
2730
16th to endNight
46%5%14%21%11%
2912

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
20%25%33%17%3
90
16th to endDay
20%14%34%24%4
129
February1st to 15thDay
20%24%42%12%
154
16th to endDay
23%14%36%22%3
291
March1st to 15thDay
21%21%28%24%4
330
16th to endDay
19%15%32%23%7%1
352
April1st to 15thDay
21%16%30%20%9%1
330
16th to endDay
19%9%30%22%12%4
289
May1st to 15thDay
34%15%17%15%12%4
288
16th to endDay
20%7%22%26%17%4
331
June1st to 15thDay
19%9%25%24%16%4
315
16th to endDay
20%7%25%27%15%2
315
July1st to 15thDay
17%222%28%23%4
305
16th to endDay
14%220%29%24%7%
326
August1st to 15thDay
18%315%28%22%11%
313
16th to endDay
12%215%30%25%14%
332
September1st to 15thDay
16%6%20%26%17%13%
315
16th to endDay
16%316%25%20%17%
314
October1st to 15thDay
22%6%17%26%20%7%
315
16th to endDay
18%12%30%27%10%1
322
November1st to 15thDay
25%7%23%28%12%2
280
16th to endDay
17%19%29%24%8%1
174
December1st to 15thDay
22%24%25%16%8%2
90
16th to endDay
29%21%30%17%1
96
January1st to 15thNight
19%13%37%25%3
780
16th to endNight
18%12%40%27%1
832
February1st to 15thNight
18%13%43%23%
764
16th to endNight
19%16%37%24%2
683
March1st to 15thNight
21%14%36%24%2
780
16th to endNight
19%11%37%24%7%
832
April1st to 15thNight
20%12%38%24%4
778
16th to endNight
20%8%30%28%10%
743
May1st to 15thNight
22%6%28%32%8%
468
16th to endNight
18%324%39%14%
375
June1st to 15thNight
20%223%32%20%
360
16th to endNight
11%119%51%16%
360
July1st to 15thNight
14%215%45%21%
340
16th to endNight
10%216%44%23%2
376
August1st to 15thNight
14%111%42%26%2
563
16th to endNight
16%113%36%29%2
764
September1st to 15thNight
16%320%35%20%1
720
16th to endNight
15%219%29%27%5%
717
October1st to 15thNight
20%5%23%30%18%2
720
16th to endNight
22%7%30%29%8%
768
November1st to 15thNight
18%8%29%29%11%1
760
16th to endNight
19%11%30%29%9%
780
December1st to 15thNight
24%10%31%27%6%
780
16th to endNight
22%12%39%24%2
832
Page generated at 2018-04-24 10:03:07. Version ac04

Copyright 2018 A. Danko


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