Lemoore
Clear Sky Chart
History

This sumarizes the distribution of each different forecast outcome for the Lemoore clear sky chart from 2005-11-06 to 2024-01-13.

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
71%
23851
33%
74679
29%
23811
76%
23811
49%
36552

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 10thNight
57%
756
17%
2646
18%
756
60%
756
24%
1635
January11th to 20thNight
69%
732
26%
2396
27%
732
72%
732
34%
1355
January21st to endNight
66%
792
27%
2574
30%
792
68%
792
34%
1446
February1st to 10thNight
66%
720
31%
2238
31%
720
70%
720
41%
1192
February11th to 20thNight
66%
700
32%
2099
32%
700
71%
700
47%
1075
February21st to endNight
63%
592
28%
1776
27%
592
67%
592
41%
967
March1st to 10thNight
61%
720
23%
2160
21%
720
67%
720
38%
1215
March11th to 20thNight
63%
720
25%
2001
22%
720
68%
720
42%
1137
March21st to endNight
56%
792
26%
2036
16%
792
64%
792
45%
1176
April1st to 10thNight
54%
720
31%
1800
15%
720
63%
720
51%
1006
April11th to 20thNight
58%
711
37%
1779
15%
711
67%
711
57%
913
April21st to endNight
59%
720
35%
1800
13%
720
67%
720
64%
893
May1st to 10thNight
62%
707
32%
1787
15%
707
69%
707
65%
872
May11th to 20thNight
63%
531
38%
1595
24%
531
71%
531
65%
681
May21st to endNight
57%
404
36%
1568
27%
404
73%
404
54%
587
June1st to 10thNight
60%
360
38%
1440
34%
360
76%
360
60%
500
June11th to 20thNight
73%
360
43%
1440
42%
360
87%
360
79%
420
June21st to endNight
75%
360
43%
1440
43%
360
87%
360
85%
403
July1st to 10thNight
84%
350
41%
1400
44%
350
93%
350
81%
403
July11th to 20thNight
86%
353
43%
1397
48%
353
90%
353
73%
438
July21st to endNight
88%
591
41%
1674
33%
558
91%
558
70%
695
August1st to 10thNight
81%
665
40%
1730
25%
662
85%
662
79%
758
August11th to 20thNight
90%
712
42%
1780
24%
712
92%
712
84%
783
August21st to endNight
92%
792
47%
1980
30%
792
93%
792
87%
857
September1st to 10thNight
90%
720
47%
1800
33%
720
92%
720
84%
789
September11th to 20thNight
83%
720
50%
1840
38%
720
89%
720
82%
802
September21st to endNight
84%
720
47%
1980
41%
720
90%
720
79%
826
October1st to 10thNight
76%
720
38%
2088
34%
720
85%
720
65%
922
October11th to 20thNight
81%
720
41%
2160
42%
720
85%
720
65%
926
October21st to endNight
81%
792
45%
2376
46%
792
86%
792
66%
1008
November1st to 10thNight
78%
740
35%
2385
38%
740
81%
740
52%
1085
November11th to 20thNight
78%
760
33%
2470
35%
760
82%
760
50%
1143
November21st to endNight
71%
760
31%
2470
32%
760
75%
760
43%
1239
December1st to 10thNight
65%
760
25%
2546
24%
760
69%
760
34%
1423
December11th to 20thNight
63%
758
21%
3219
25%
758
67%
758
20%
2042
December21st to endNight
57%
821
13%
4809
22%
817
62%
817
15%
2940

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
5%313323345%68%
74773
Night
6%313323345%66%
74983
TransparencyDay
20%27%20%26%23%
74488
Night
22%28%21%26%21%
74789
SeeingDay
5%312%24%33%22%
14227
Night
6%315%40%32%4
23877

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 10thDay
13%9%5%9%8%45%5%5%7%30%
1519
11th to 20thDay
9%7%37%7%345%5%7%43%
1623
21st to endDay
13%8%47%5%35%5%5%7%36%
1782
February1st to 10thDay
12%6%25%43445%7%49%
1719
11th to 20thDay
8%5%25%43445%7%53%
1750
21st to endDay
12%5%25%42345%6%51%
1480
March1st to 10thDay
9%5%36%4346%7%7%47%
1800
11th to 20thDay
9%4245%35%5%6%8%50%
1956
21st to endDay
8%313424446%59%
2318
April1st to 10thDay
7%42342345%6%62%
2160
11th to 20thDay
5%314324446%66%
2129
21st to endDay
4212223346%72%
2160
May1st to 10thDay
2112212235%77%
2168
11th to 20thDay
2111223346%76%
2301
21st to endDay
321221233477%
2704
June1st to 10thDay
2112212335%77%
2520
11th to 20thDay
1111112390%
2520
21st to endDay
111111121289%
2520
July1st to 10thDay
1111112388%
2520
11th to 20thDay
11211222385%
2511
21st to endDay
1111212345%79%
2546
August1st to 10thDay
21111122386%
2199
11th to 20thDay
111111111289%
2122
21st to endDay
1111112289%
2376
September1st to 10thDay
11111112388%
2160
11th to 20thDay
11111222387%
2118
21st to endDay
111121223483%
1980
October1st to 10thDay
2212211446%75%
1868
11th to 20thDay
221221233478%
1800
21st to endDay
2212223246%74%
1980
November1st to 10thDay
432433445%7%62%
1692
11th to 20thDay
8%5%2433345%7%57%
1710
21st to endDay
7%425%435%45%7%54%
1710
December1st to 10thDay
8%9%37%5%45%5%5%7%42%
1630
11th to 20thDay
14%8%5%6%7%45%5%6%7%32%
1928
21st to endDay
12%11%49%7%47%5%6%7%28%
2794
January1st to 10thNight
15%9%26%5%3445%7%40%
2646
11th to 20thNight
7%5%25%6%35%45%6%52%
2396
21st to endNight
11%5%3443345%6%51%
2574
February1st to 10thNight
10%5%24323446%59%
2238
11th to 20thNight
9%32332335%8%60%
2098
21st to endNight
10%424433345%59%
1776
March1st to 10thNight
8%5%2443445%8%53%
2160
11th to 20thNight
7%4244345%5%9%54%
2001
21st to endNight
9%423423436%60%
2036
April1st to 10thNight
6%32342335%7%63%
1800
11th to 20thNight
4313223335%72%
1779
21st to endNight
3212212337%74%
1800
May1st to 10thNight
3212223236%75%
1787
11th to 20thNight
3212212235%77%
1594
21st to endNight
321321223378%
1568
June1st to 10thNight
3211212235%79%
1440
11th to 20thNight
1111122389%
1440
21st to endNight
11111391%
1440
July1st to 10thNight
111122389%
1440
11th to 20thNight
11221112385%
1445
21st to endNight
1111212445%78%
1773
August1st to 10thNight
111211111287%
1739
11th to 20thNight
11111123387%
1780
21st to endNight
111111290%
1980
September1st to 10thNight
11111112190%
1800
11th to 20thNight
1111112388%
1840
21st to endNight
11111223484%
1980
October1st to 10thNight
2112222246%76%
2088
11th to 20thNight
2111213335%76%
2160
21st to endNight
321221233380%
2376
November1st to 10thNight
4212423346%68%
2385
11th to 20thNight
5%313323347%66%
2470
21st to endNight
5%42442345%6%60%
2470
December1st to 10thNight
9%6%25%43445%7%52%
2546
11th to 20thNight
15%7%36%6%345%6%8%37%
3276
21st to endNight
12%7%37%7%46%5%5%7%37%
4862

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 10thDay
53%415%18%9%2
1519
11th to 20thDay
41%412%21%17%5%
1623
21st to endDay
47%5%13%17%15%3
1782
February1st to 10thDay
35%310%26%19%7%
1719
11th to 20thDay
30%310%29%21%6%
1760
21st to endDay
35%313%28%18%4
1480
March1st to 10thDay
34%413%25%19%4
1800
11th to 20thDay
32%413%26%20%5%
1956
21st to endDay
26%315%30%19%5%
2318
April1st to 10thDay
25%311%30%22%9%
2160
11th to 20thDay
21%212%28%27%10%
2132
21st to endDay
16%310%31%30%9%
2160
May1st to 10thDay
11%210%24%39%14%
2168
11th to 20thDay
12%26%27%36%17%
2304
21st to endDay
13%26%32%34%13%
2704
June1st to 10thDay
12%27%21%34%25%
2520
11th to 20thDay
5%1313%37%41%
2520
21st to endDay
6%118%28%56%
2520
July1st to 10thDay
5%115%23%65%
2451
11th to 20thDay
7%128%25%57%
2436
21st to endDay
11%219%26%51%
2405
August1st to 10thDay
8%118%29%53%
2183
11th to 20thDay
5%19%30%55%
2122
21st to endDay
5%17%36%50%
2376
September1st to 10thDay
6%127%29%55%
2160
11th to 20thDay
6%2118%42%31%
2118
21st to endDay
8%1118%43%29%
1980
October1st to 10thDay
12%25%22%30%28%
1868
11th to 20thDay
12%25%26%31%24%
1800
21st to endDay
14%27%25%31%21%
1980
November1st to 10thDay
22%39%29%28%9%
1692
11th to 20thDay
28%314%28%23%4
1710
21st to endDay
31%48%27%22%8%
1710
December1st to 10thDay
43%410%19%17%7%
1630
11th to 20thDay
50%411%21%11%3
1928
21st to endDay
55%314%19%8%1
2794
January1st to 10thNight
43%413%24%14%2
2646
11th to 20thNight
33%413%24%17%9%
2396
21st to endNight
34%314%24%21%5%
2574
February1st to 10thNight
28%310%29%22%8%
2238
11th to 20thNight
25%211%28%27%8%
2099
21st to endNight
29%212%29%22%5%
1776
March1st to 10thNight
31%313%27%20%6%
2160
11th to 20thNight
28%413%25%24%6%
2001
21st to endNight
29%213%29%21%6%
2036
April1st to 10thNight
23%311%32%21%11%
1800
11th to 20thNight
18%29%29%32%10%
1779
21st to endNight
14%29%31%34%8%
1800
May1st to 10thNight
14%29%25%33%18%
1787
11th to 20thNight
13%1424%39%18%
1595
21st to endNight
14%26%26%36%16%
1568
June1st to 10thNight
12%16%20%33%28%
1440
11th to 20thNight
41313%36%42%
1440
21st to endNight
317%29%60%
1440
July1st to 10thNight
415%22%68%
1400
11th to 20thNight
7%127%22%62%
1397
21st to endNight
10%217%26%53%
1674
August1st to 10thNight
9%118%26%56%
1730
11th to 20thNight
5%217%29%56%
1780
21st to endNight
5%17%32%56%
1980
September1st to 10thNight
6%117%27%59%
1800
11th to 20thNight
6%1115%40%36%
1840
21st to endNight
7%1116%39%35%
1980
October1st to 10thNight
13%2420%27%34%
2088
11th to 20thNight
12%27%21%30%28%
2160
21st to endNight
12%2423%35%24%
2376
November1st to 10thNight
19%28%28%30%14%
2385
11th to 20thNight
20%311%28%30%8%
2470
21st to endNight
26%29%25%28%9%
2470
December1st to 10thNight
33%411%24%18%11%
2546
11th to 20thNight
45%413%20%15%3
3276
21st to endNight
48%317%21%10%2
4862

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 10thDay
21%7%12%30%24%6%
180
11th to 20thDay
12%414%26%29%16%
329
21st to endDay
14%313%22%32%15%
374
February1st to 10thDay
11%5%13%25%25%21%
384
11th to 20thDay
11%6%16%30%23%13%
415
21st to endDay
9%8%20%29%26%8%
346
March1st to 10thDay
10%6%18%30%26%9%
420
11th to 20thDay
10%5%23%25%24%13%
420
21st to endDay
11%8%24%27%21%10%
462
April1st to 10thDay
10%5%21%26%24%14%
420
11th to 20thDay
8%9%20%30%22%11%
412
21st to endDay
27%20%29%22%19%
420
May1st to 10thDay
25%18%31%30%13%
423
11th to 20thDay
2414%33%30%17%
448
21st to endDay
35%16%23%32%21%
485
June1st to 10thDay
1313%29%30%25%
450
11th to 20thDay
1212%22%40%22%
450
21st to endDay
7%26%37%30%
450
July1st to 10thDay
1217%48%32%
446
11th to 20thDay
1212%33%52%
444
21st to endDay
1111%47%40%
487
August1st to 10thDay
36%20%42%30%
447
11th to 20thDay
1121%42%34%
437
21st to endDay
1419%41%35%
495
September1st to 10thDay
11321%47%27%
450
11th to 20thDay
128%30%42%18%
450
21st to endDay
1210%20%44%24%
450
October1st to 10thDay
2314%28%32%21%
450
11th to 20thDay
2412%22%36%24%
450
21st to endDay
2213%23%34%25%
495
November1st to 10thDay
5%313%23%33%24%
288
11th to 20thDay
5%210%20%41%21%
270
21st to endDay
7%212%28%33%19%
270
December1st to 10thDay
12%314%30%27%14%
232
11th to 20thDay
8%413%26%28%21%
180
21st to endDay
15%6%16%25%31%8%
198
January1st to 10thNight
18%310%34%30%5%
760
11th to 20thNight
9%19%40%34%6%
732
21st to endNight
14%212%39%29%5%
792
February1st to 10thNight
12%213%35%31%8%
720
11th to 20thNight
9%415%37%31%4
704
21st to endNight
10%317%45%22%3
592
March1st to 10thNight
9%5%18%38%27%2
720
11th to 20thNight
8%418%36%30%5%
720
21st to endNight
8%426%40%21%1
792
April1st to 10thNight
7%5%28%38%21%2
720
11th to 20thNight
5%8%25%39%22%1
711
21st to endNight
36%28%36%23%3
720
May1st to 10thNight
3427%42%23%1
707
11th to 20thNight
4329%42%22%
531
21st to endNight
36%29%41%20%
405
June1st to 10thNight
36%28%48%13%1
360
11th to 20thNight
323%54%19%1
360
21st to endNight
1222%53%21%1
360
July1st to 10thNight
14%56%30%
350
11th to 20thNight
19%52%37%1
353
21st to endNight
117%42%46%4
591
August1st to 10thNight
213%43%37%4
665
11th to 20thNight
7%45%44%4
712
21st to endNight
15%35%54%5%
792
September1st to 10thNight
117%40%47%4
720
11th to 20thNight
1113%43%37%5%
720
21st to endNight
2111%37%45%5%
720
October1st to 10thNight
3215%39%37%5%
720
11th to 20thNight
3210%37%40%8%
720
21st to endNight
3210%32%37%15%
792
November1st to 10thNight
5%210%34%40%9%
740
11th to 20thNight
5%19%40%36%8%
760
21st to endNight
7%211%38%36%5%
760
December1st to 10thNight
11%212%39%30%5%
760
11th to 20thNight
14%210%43%25%5%
760
21st to endNight
12%316%42%25%3
836
Page generated at 2024-01-10 16:35:26. Version ac07

Copyright 2024 Attilla Danko


Lemoore Clear Sky Chart |Charts Home