Innisfail
Clear Sky Chart
History

This sumarizes the distribution of each different forecast outcome for the Innisfail clear sky chart from 2005-11-06 to 2024-01-14.

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%
23422
13%
74630
9%
23394
47%
23394
20%
50611

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
35%
946
14%
2836
9%
946
40%
946
17%
2064
January11th to 20thNight
37%
920
16%
2758
11%
920
42%
920
19%
1959
January21st to endNight
36%
824
18%
2804
11%
824
45%
824
15%
1964
February1st to 10thNight
37%
720
14%
2520
13%
720
42%
720
16%
1782
February11th to 20thNight
37%
702
12%
2305
9%
700
43%
700
16%
1673
February21st to endNight
47%
592
17%
1832
16%
592
51%
592
22%
1236
March1st to 10thNight
42%
720
15%
2160
12%
720
47%
720
19%
1576
March11th to 20thNight
42%
720
16%
2008
10%
720
47%
720
23%
1423
March21st to endNight
39%
792
12%
2139
5%
792
43%
792
19%
1611
April1st to 10thNight
36%
659
13%
1739
5%
659
41%
659
20%
1285
April11th to 20thNight
35%
533
14%
1601
8%
533
39%
533
18%
1164
April21st to endNight
40%
540
11%
1620
9%
540
44%
540
19%
1147
May1st to 10thNight
37%
420
7%
1424
6%
420
40%
420
17%
992
May11th to 20thNight
46%
354
11%
1239
9%
354
50%
354
23%
786
May21st to endNight
45%
388
3%
1358
1%
388
46%
388
17%
925
June1st to 10thNight
40%
360
0%
1260
0%
360
40%
360
15%
908
June11th to 20thNight
41%
360
0%
1260
0%
360
41%
360
12%
945
June21st to endNight
54%
360
0%
1260
0%
360
54%
360
23%
808
July1st to 10thNight
58%
350
0%
1225
0%
350
58%
350
22%
771
July11th to 20thNight
56%
348
3%
1218
0%
348
56%
348
21%
789
July21st to endNight
66%
394
9%
1316
9%
372
67%
372
29%
739
August1st to 10thNight
58%
358
9%
1424
14%
356
60%
356
21%
883
August11th to 20thNight
59%
482
13%
1550
14%
482
60%
482
28%
942
August21st to endNight
59%
594
17%
1782
14%
594
62%
594
30%
1118
September1st to 10thNight
55%
616
18%
1703
12%
616
57%
616
31%
1066
September11th to 20thNight
51%
720
17%
1980
11%
720
54%
720
28%
1314
September21st to endNight
50%
720
20%
1980
14%
720
55%
720
33%
1264
October1st to 10thNight
48%
720
18%
2063
12%
720
53%
720
27%
1373
October11th to 20thNight
43%
720
15%
2307
10%
720
50%
720
23%
1511
October21st to endNight
37%
792
16%
2574
10%
792
44%
792
20%
1753
November1st to 10thNight
34%
871
17%
2536
11%
871
41%
871
20%
1831
November11th to 20thNight
33%
950
16%
2769
9%
950
39%
950
21%
1948
November21st to endNight
36%
950
12%
2850
6%
950
41%
950
21%
1944
December1st to 10thNight
39%
950
16%
2850
11%
950
43%
950
19%
2019
December11th to 20thNight
37%
949
14%
3473
9%
949
42%
949
15%
2448
December21st to endNight
36%
1028
12%
4907
9%
1026
43%
1026
15%
2650

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
10%9%47%6%46%5%6%8%35%
74627
Night
8%10%48%7%46%6%6%8%34%
75135
TransparencyDay
45%8%16%22%8%1
74310
Night
46%7%14%21%10%2
74971
SeeingDay
13%6%23%32%20%7%
14232
Night
12%5%26%38%16%2
23447

By Month

Percentage Cloud Cover NW (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
5%12%6%10%6%5%6%6%6%10%29%
1329
11th to 20thDay
7%11%6%7%8%5%7%5%6%6%32%
1281
21st to endDay
6%12%5%10%8%46%7%6%8%27%
1566
February1st to 10thDay
6%13%7%8%7%47%7%6%9%28%
1440
11th to 20thDay
6%13%6%11%7%5%7%7%6%8%24%
1543
21st to endDay
410%8%10%10%5%7%7%6%9%26%
1422
March1st to 10thDay
5%12%7%10%10%5%6%7%6%7%26%
1800
11th to 20thDay
6%10%5%8%7%46%6%8%8%33%
1951
21st to endDay
9%14%6%9%7%46%6%5%8%27%
2214
April1st to 10thDay
8%12%5%7%8%46%6%6%8%30%
2220
11th to 20thDay
12%13%5%9%6%45%5%5%7%28%
2310
21st to endDay
12%11%47%7%36%5%6%8%31%
2340
May1st to 10thDay
13%11%47%6%47%6%7%8%28%
2531
11th to 20thDay
8%7%37%7%45%5%7%9%38%
2654
21st to endDay
19%7%35%5%45%5%7%8%32%
2917
June1st to 10thDay
16%7%26%7%46%6%7%9%30%
2700
11th to 20thDay
20%9%37%6%46%5%6%8%25%
2700
21st to endDay
10%6%26%6%45%7%7%10%37%
2700
July1st to 10thDay
10%6%26%5%45%5%7%10%40%
2700
11th to 20thDay
12%6%35%436%5%7%10%41%
2700
21st to endDay
8%425%5%35%5%7%10%47%
2920
August1st to 10thDay
10%5%245%45%5%7%11%41%
2507
11th to 20thDay
9%4145%35%5%7%9%47%
2350
21st to endDay
11%5%245%36%5%7%8%44%
2574
September1st to 10thDay
12%6%25%5%345%6%8%44%
2253
11th to 20thDay
15%7%25%43445%7%44%
1980
21st to endDay
9%8%35%5%45%5%6%9%42%
1980
October1st to 10thDay
12%10%45%5%345%5%7%39%
1896
11th to 20thDay
11%9%37%6%45%5%7%7%38%
1652
21st to endDay
7%11%5%8%7%46%5%6%7%33%
1782
November1st to 10thDay
8%15%6%9%8%45%5%6%7%28%
1523
11th to 20thDay
7%12%6%8%6%36%5%5%7%35%
1408
21st to endDay
6%10%5%9%8%5%6%46%9%32%
1330
December1st to 10thDay
5%14%6%11%9%5%5%5%5%7%29%
1330
11th to 20thDay
410%5%11%10%5%6%7%7%8%29%
1682
21st to endDay
48%5%8%6%36%6%5%8%42%
2442
January1st to 10thNight
410%6%11%11%47%6%6%8%27%
2836
11th to 20thNight
6%13%5%9%7%46%6%7%8%30%
2758
21st to endNight
6%13%5%10%7%47%7%7%9%26%
2804
February1st to 10thNight
6%12%6%11%9%46%5%6%8%28%
2520
11th to 20thNight
5%13%5%10%8%6%7%7%6%7%26%
2304
21st to endNight
410%5%9%9%46%7%6%8%32%
1832
March1st to 10thNight
5%10%5%9%8%6%8%6%7%8%27%
2160
11th to 20thNight
6%9%5%9%8%46%7%8%10%29%
2008
21st to endNight
7%13%6%9%8%45%6%6%8%27%
2139
April1st to 10thNight
8%11%5%9%8%45%6%6%9%29%
1739
11th to 20thNight
9%13%5%8%9%46%45%8%28%
1601
21st to endNight
11%8%47%7%5%6%6%7%8%32%
1620
May1st to 10thNight
14%12%49%6%45%6%6%8%28%
1424
11th to 20thNight
11%7%35%7%45%6%6%7%40%
1239
21st to endNight
19%7%35%7%435%8%8%31%
1358
June1st to 10thNight
16%8%47%7%35%6%7%9%27%
1260
11th to 20thNight
19%8%48%8%5%8%5%6%7%23%
1260
21st to endNight
9%7%26%7%46%7%7%8%38%
1260
July1st to 10thNight
10%5%26%7%35%6%6%10%39%
1260
11th to 20thNight
9%5%27%6%36%7%8%9%38%
1260
21st to endNight
7%424435%6%7%10%48%
1393
August1st to 10thNight
9%5%36%6%45%5%6%10%41%
1432
11th to 20thNight
10%6%25%6%35%46%11%42%
1550
21st to endNight
9%5%25%5%35%6%7%8%44%
1782
September1st to 10thNight
10%6%26%435%47%9%44%
1703
11th to 20thNight
15%7%345%35%46%7%41%
1980
21st to endNight
8%7%26%5%345%6%8%45%
1980
October1st to 10thNight
11%8%36%6%35%5%6%7%40%
2063
11th to 20thNight
8%9%48%7%35%5%7%8%38%
2307
21st to endNight
7%11%5%7%8%36%5%7%9%33%
2574
November1st to 10thNight
9%15%5%8%6%35%5%6%7%31%
2536
11th to 20thNight
5%11%5%9%8%46%6%6%8%31%
2769
21st to endNight
410%5%10%7%46%6%7%10%32%
2850
December1st to 10thNight
6%11%5%10%8%5%6%45%7%33%
2850
11th to 20thNight
310%5%10%9%5%7%7%6%8%29%
3510
21st to endNight
39%48%7%35%5%5%8%44%
5214

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
49%5%13%22%9%2
1329
11th to 20thDay
50%5%13%21%8%3
1281
21st to endDay
52%7%14%16%10%1
1566
February1st to 10thDay
50%8%12%18%10%2
1440
11th to 20thDay
55%7%14%15%7%1
1552
21st to endDay
53%8%11%17%11%1
1422
March1st to 10thDay
55%7%15%16%7%1
1800
11th to 20thDay
46%7%13%21%11%2
1952
21st to endDay
56%7%15%16%7%1
2214
April1st to 10thDay
50%9%15%18%8%
2220
11th to 20thDay
54%7%9%21%9%
2310
21st to endDay
49%7%13%23%7%1
2340
May1st to 10thDay
50%8%13%21%7%
2531
11th to 20thDay
41%7%14%25%12%1
2658
21st to endDay
48%8%15%22%7%1
2918
June1st to 10thDay
49%9%16%21%6%
2700
11th to 20thDay
55%9%13%17%5%1
2700
21st to endDay
39%11%19%25%6%1
2700
July1st to 10thDay
37%10%21%24%6%1
2626
11th to 20thDay
38%9%23%24%6%
2619
21st to endDay
30%10%23%30%7%
2758
August1st to 10thDay
35%10%22%26%6%
2490
11th to 20thDay
31%9%25%25%8%1
2350
21st to endDay
34%9%20%26%10%1
2574
September1st to 10thDay
37%8%19%24%9%3
2253
11th to 20thDay
40%6%14%29%11%1
1980
21st to endDay
38%7%18%24%11%2
1980
October1st to 10thDay
44%5%16%24%9%1
1896
11th to 20thDay
44%8%15%22%10%1
1652
21st to endDay
48%8%11%21%11%1
1782
November1st to 10thDay
54%8%11%18%8%2
1523
11th to 20thDay
49%7%12%21%10%1
1408
21st to endDay
48%6%16%19%9%2
1330
December1st to 10thDay
54%6%11%16%10%2
1330
11th to 20thDay
50%8%16%20%5%1
1684
21st to endDay
39%5%10%22%19%5%
2442
January1st to 10thNight
53%7%11%17%9%3
2836
11th to 20thNight
51%6%14%20%7%4
2758
21st to endNight
52%6%12%17%11%1
2804
February1st to 10thNight
54%5%10%19%10%1
2520
11th to 20thNight
55%6%13%17%9%1
2305
21st to endNight
47%5%12%21%13%2
1832
March1st to 10thNight
51%8%13%21%7%1
2160
11th to 20thNight
47%7%14%19%12%1
2008
21st to endNight
53%8%12%19%7%1
2139
April1st to 10thNight
50%8%12%19%11%
1739
11th to 20thNight
53%6%12%20%8%1
1601
21st to endNight
48%8%13%22%7%2
1620
May1st to 10thNight
51%6%15%19%9%
1424
11th to 20thNight
41%7%12%25%15%
1239
21st to endNight
47%8%16%19%7%1
1358
June1st to 10thNight
51%9%14%18%8%
1260
11th to 20thNight
57%9%12%16%42
1260
21st to endNight
40%10%19%23%7%1
1260
July1st to 10thNight
38%11%20%25%5%1
1225
11th to 20thNight
38%13%22%20%7%1
1218
21st to endNight
28%11%21%29%10%1
1316
August1st to 10thNight
37%11%21%24%6%
1424
11th to 20thNight
36%8%21%28%7%1
1550
21st to endNight
34%10%17%26%12%2
1782
September1st to 10thNight
35%8%15%27%12%3
1703
11th to 20thNight
39%8%14%25%10%4
1980
21st to endNight
36%6%16%25%14%3
1980
October1st to 10thNight
42%6%16%23%12%1
2063
11th to 20thNight
43%7%16%23%10%2
2307
21st to endNight
46%7%16%21%9%1
2574
November1st to 10thNight
51%6%11%21%10%2
2536
11th to 20thNight
48%7%15%18%12%1
2769
21st to endNight
46%7%17%20%8%3
2850
December1st to 10thNight
50%6%11%19%11%3
2850
11th to 20thNight
50%8%14%20%6%1
3507
21st to endNight
38%5%11%26%14%6%
5214

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
6%325%33%22%11%
180
11th to 20thDay
8%231%35%16%8%
166
21st to endDay
9%7%26%30%20%9%
176
February1st to 10thDay
9%13%18%39%15%6%
160
11th to 20thDay
10%6%25%42%15%3
226
21st to endDay
6%323%41%19%8%
288
March1st to 10thDay
9%8%27%34%16%6%
420
11th to 20thDay
6%428%37%18%8%
420
21st to endDay
14%6%24%31%17%8%
462
April1st to 10thDay
10%10%28%32%15%5%
420
11th to 20thDay
18%8%23%28%19%6%
412
21st to endDay
17%6%23%31%18%5%
420
May1st to 10thDay
15%8%23%30%18%6%
497
11th to 20thDay
12%7%22%33%20%6%
625
21st to endDay
19%415%32%22%8%
679
June1st to 10thDay
16%7%22%34%17%4
630
11th to 20thDay
21%9%19%31%15%4
630
21st to endDay
12%5%20%30%22%11%
630
July1st to 10thDay
14%416%32%23%11%
621
11th to 20thDay
14%319%33%24%6%
618
21st to endDay
8%5%18%32%28%10%
666
August1st to 10thDay
12%422%30%22%9%
447
11th to 20thDay
9%5%18%34%28%6%
437
21st to endDay
12%6%18%30%24%10%
495
September1st to 10thDay
14%430%29%19%4
450
11th to 20thDay
20%6%22%28%20%5%
450
21st to endDay
14%8%30%24%18%6%
450
October1st to 10thDay
17%7%23%27%16%10%
366
11th to 20thDay
11%9%30%28%17%6%
270
21st to endDay
13%9%31%31%14%2
297
November1st to 10thDay
18%421%39%13%5%
270
11th to 20thDay
13%6%26%37%14%2
216
21st to endDay
6%7%28%34%16%10%
180
December1st to 10thDay
13%224%34%21%5%
180
11th to 20thDay
8%6%38%27%18%3
180
21st to endDay
6%6%22%33%27%6%
198
January1st to 10thNight
10%6%31%36%15%2
950
11th to 20thNight
12%7%29%36%14%1
920
21st to endNight
11%9%28%39%12%2
824
February1st to 10thNight
11%7%28%36%16%2
720
11th to 20thNight
11%6%31%38%14%1
704
21st to endNight
9%323%39%22%5%
592
March1st to 10thNight
10%429%39%16%2
720
11th to 20thNight
9%328%42%15%3
720
21st to endNight
13%5%24%41%14%3
792
April1st to 10thNight
13%6%29%34%17%2
659
11th to 20thNight
14%6%27%40%11%1
533
21st to endNight
15%8%26%37%13%1
540
May1st to 10thNight
18%8%24%34%14%2
420
11th to 20thNight
13%5%27%37%16%1
354
21st to endNight
23%419%37%16%2
389
June1st to 10thNight
21%6%23%34%14%3
360
11th to 20thNight
21%5%23%33%18%1
360
21st to endNight
14%320%40%22%2
360
July1st to 10thNight
14%312%47%23%1
350
11th to 20thNight
13%220%41%23%1
348
21st to endNight
9%415%42%28%3
394
August1st to 10thNight
11%215%37%33%2
358
11th to 20thNight
11%5%14%44%24%2
482
21st to endNight
12%419%43%22%1
594
September1st to 10thNight
13%320%45%17%2
616
11th to 20thNight
17%5%18%38%21%1
720
21st to endNight
12%327%39%17%1
720
October1st to 10thNight
15%424%39%16%2
720
11th to 20thNight
12%6%28%38%15%1
720
21st to endNight
11%8%31%37%12%1
792
November1st to 10thNight
16%6%31%34%12%2
871
11th to 20thNight
11%7%37%33%10%2
950
21st to endNight
8%5%36%37%12%2
950
December1st to 10thNight
13%7%27%36%15%3
950
11th to 20thNight
9%6%32%38%14%1
950
21st to endNight
11%5%29%37%15%3
1045
Page generated at 2024-01-11 11:31:59. Version ac07

Copyright 2024 Attilla Danko


Innisfail Clear Sky Chart |Charts Home