Lino Lakes
Clear Sky Chart
History

This sumarizes the distribution of each different forecast outcome for the Lino Lakes clear sky chart from 2005-11-06 to 2024-01-15.

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
36%
24874
16%
74728
9%
24815
43%
24815
23%
50423

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
29%
950
12%
2648
5%
946
36%
946
20%
1937
January11th to 20thNight
25%
925
11%
2589
5%
925
29%
925
17%
1945
January21st to endNight
22%
990
11%
2575
3%
990
28%
990
15%
2018
February1st to 10thNight
26%
900
14%
2340
3%
900
32%
900
21%
1701
February11th to 20thNight
27%
879
17%
2273
5%
874
35%
874
25%
1572
February21st to endNight
27%
681
16%
1865
4%
681
36%
681
20%
1349
March1st to 10thNight
31%
612
14%
2052
10%
612
36%
612
18%
1405
March11th to 20thNight
31%
540
18%
1980
12%
540
41%
540
21%
1269
March21st to endNight
32%
594
17%
2148
13%
594
41%
594
18%
1428
April1st to 10thNight
29%
540
16%
1800
11%
540
39%
540
20%
1202
April11th to 20thNight
30%
533
16%
1768
11%
533
39%
533
18%
1228
April21st to endNight
32%
540
16%
1620
10%
540
40%
540
18%
1135
May1st to 10thNight
30%
540
16%
1508
8%
540
36%
540
23%
1044
May11th to 20thNight
38%
531
18%
1417
8%
531
44%
531
28%
951
May21st to endNight
47%
583
14%
1552
6%
582
51%
582
28%
1036
June1st to 10thNight
51%
540
15%
1440
6%
540
55%
540
35%
895
June11th to 20thNight
50%
540
15%
1440
6%
540
54%
540
34%
925
June21st to endNight
57%
540
16%
1440
8%
540
60%
540
41%
844
July1st to 10thNight
67%
525
17%
1400
8%
525
69%
525
48%
781
July11th to 20thNight
60%
522
19%
1392
10%
522
63%
522
45%
795
July21st to endNight
65%
591
22%
1491
11%
558
69%
558
50%
821
August1st to 10thNight
65%
537
21%
1601
17%
534
68%
534
36%
921
August11th to 20thNight
59%
534
22%
1600
19%
534
65%
534
36%
927
August21st to endNight
58%
594
23%
1894
22%
594
65%
594
36%
1049
September1st to 10thNight
55%
540
22%
1800
21%
540
62%
540
33%
991
September11th to 20thNight
51%
540
25%
1812
20%
540
62%
540
34%
997
September21st to endNight
41%
616
21%
2056
15%
616
50%
616
28%
1223
October1st to 10thNight
42%
720
21%
2160
14%
720
47%
720
29%
1326
October11th to 20thNight
33%
720
19%
2160
10%
720
40%
720
23%
1442
October21st to endNight
33%
792
16%
2412
9%
792
40%
792
19%
1684
November1st to 10thNight
33%
848
20%
2514
10%
848
42%
848
23%
1663
November11th to 20thNight
26%
950
15%
2660
6%
950
33%
950
18%
1955
November21st to endNight
26%
950
16%
2660
7%
950
35%
950
21%
1873
December1st to 10thNight
26%
950
10%
2660
4%
950
31%
950
17%
1970
December11th to 20thNight
21%
949
12%
3201
3%
948
28%
948
12%
2419
December21st to endNight
18%
1038
6%
4800
3%
1026
25%
1026
7%
3702

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
13%9%47%6%35%5%5%7%37%
74742
Night
12%9%47%6%35%45%7%39%
75074
TransparencyDay
46%6%14%23%10%1
74443
Night
45%6%13%23%11%1
74893
SeeingDay
16%9%30%27%14%4
14856
Night
16%9%31%32%11%1
24883

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 10thDay
8%10%8%9%8%5%6%5%5%8%28%
1517
11th to 20thDay
11%14%7%11%9%45%5%46%23%
1477
21st to endDay
9%13%7%13%8%45%6%6%7%23%
1778
February1st to 10thDay
8%11%5%8%8%46%6%6%6%31%
1620
11th to 20thDay
9%11%5%9%7%46%5%5%6%34%
1574
21st to endDay
11%11%7%10%6%26%447%30%
1390
March1st to 10thDay
13%12%5%8%6%45%45%8%31%
1921
11th to 20thDay
14%9%46%6%4445%7%36%
1980
21st to endDay
19%10%5%6%6%345%47%30%
2207
April1st to 10thDay
17%10%46%6%35%45%8%33%
2160
11th to 20thDay
20%11%47%5%35%446%32%
2138
21st to endDay
21%11%36%5%45%346%31%
2340
May1st to 10thDay
17%8%37%7%45%45%7%34%
2452
11th to 20thDay
17%8%35%5%3445%8%38%
2479
21st to endDay
12%8%36%7%36%5%5%8%38%
2725
June1st to 10thDay
12%5%245%346%7%9%45%
2520
11th to 20thDay
12%6%36%6%35%6%7%9%38%
2520
21st to endDay
9%5%26%6%35%6%7%10%40%
2520
July1st to 10thDay
6%4245%35%5%8%10%49%
2520
11th to 20thDay
8%4244345%5%10%50%
2520
21st to endDay
6%4245%35%6%7%10%48%
2735
August1st to 10thDay
9%426%7%5%5%5%7%9%42%
2328
11th to 20thDay
12%5%35%5%346%6%8%45%
2301
21st to endDay
9%5%245%245%5%7%52%
2461
September1st to 10thDay
11%6%25%5%345%5%8%45%
2160
11th to 20thDay
13%5%245%35%6%7%8%44%
2146
21st to endDay
15%6%25%5%4446%7%43%
1886
October1st to 10thDay
17%6%26%4345%5%6%42%
1800
11th to 20thDay
15%10%36%5%35%45%7%37%
1800
21st to endDay
17%11%48%5%24445%36%
1944
November1st to 10thDay
10%12%5%7%7%345%5%5%37%
1562
11th to 20thDay
12%14%7%11%8%3345%5%27%
1520
21st to endDay
13%11%47%5%35%45%8%33%
1520
December1st to 10thDay
12%13%6%10%10%45%5%46%25%
1520
11th to 20thDay
10%13%9%10%7%35%45%5%28%
1918
21st to endDay
20%17%7%15%7%3433419%
2783
January1st to 10thNight
8%11%6%9%8%46%6%6%6%31%
2648
11th to 20thNight
11%12%7%10%7%45%5%6%6%28%
2589
21st to endNight
12%14%6%12%8%45%45%6%25%
2575
February1st to 10thNight
6%11%6%9%9%36%45%6%35%
2340
11th to 20thNight
7%10%47%7%46%45%8%39%
2273
21st to endNight
13%9%48%7%45%5%5%5%35%
1865
March1st to 10thNight
12%10%48%6%45%45%6%37%
2052
11th to 20thNight
13%11%47%5%3345%6%40%
1980
21st to endNight
18%8%47%5%3445%6%36%
2148
April1st to 10thNight
17%9%36%5%345%47%36%
1800
11th to 20thNight
21%9%5%6%5%24345%35%
1768
21st to endNight
19%9%46%5%35%5%5%6%34%
1620
May1st to 10thNight
17%8%36%6%345%45%39%
1508
11th to 20thNight
14%6%25%6%2446%8%42%
1416
21st to endNight
10%6%36%6%35%5%7%9%41%
1551
June1st to 10thNight
10%5%245%25%6%6%9%47%
1440
11th to 20thNight
8%5%346%36%47%7%48%
1440
21st to endNight
6%4244345%7%8%52%
1440
July1st to 10thNight
5%3233335%7%10%56%
1440
11th to 20thNight
5%3244345%7%9%55%
1440
21st to endNight
32234246%6%8%59%
1579
August1st to 10thNight
6%426%5%35%46%9%51%
1611
11th to 20thNight
12%41443345%8%52%
1600
21st to endNight
7%5%25%425%45%6%55%
1894
September1st to 10thNight
8%4245%35%46%7%52%
1800
11th to 20thNight
9%425%43446%7%53%
1812
21st to endNight
14%5%25%5%3445%6%49%
2056
October1st to 10thNight
15%6%25%42435%6%47%
2160
11th to 20thNight
17%9%35%5%34447%40%
2160
21st to endNight
17%11%47%434446%37%
2412
November1st to 10thNight
13%9%45%5%345%5%6%41%
2514
11th to 20thNight
13%11%5%10%7%35%445%33%
2660
21st to endNight
14%9%46%7%4445%8%36%
2660
December1st to 10thNight
10%12%6%10%8%35%45%6%31%
2660
11th to 20thNight
11%14%5%10%8%45%5%5%6%27%
3279
21st to endNight
21%15%6%11%6%24445%22%
4884

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
55%6%13%21%6%
1518
11th to 20thDay
62%6%11%12%8%
1477
21st to endDay
60%5%14%14%7%
1778
February1st to 10thDay
51%6%16%19%7%1
1620
11th to 20thDay
51%6%12%22%8%1
1583
21st to endDay
54%6%10%19%10%1
1390
March1st to 10thDay
52%5%15%19%7%1
1921
11th to 20thDay
48%5%15%23%7%1
1980
21st to endDay
55%5%11%21%7%1
2207
April1st to 10thDay
49%5%13%21%11%1
2160
11th to 20thDay
53%6%10%19%12%2
2138
21st to endDay
54%5%13%19%9%
2340
May1st to 10thDay
49%6%13%20%10%2
2452
11th to 20thDay
44%6%14%24%11%1
2483
21st to endDay
45%7%11%23%13%1
2725
June1st to 10thDay
34%7%15%31%11%1
2520
11th to 20thDay
41%7%15%22%14%1
2520
21st to endDay
36%8%18%27%9%2
2520
July1st to 10thDay
28%7%18%32%14%1
2451
11th to 20thDay
29%7%16%27%18%3
2445
21st to endDay
29%8%18%27%16%2
2583
August1st to 10thDay
36%8%16%27%9%3
2314
11th to 20thDay
36%7%15%31%10%
2301
21st to endDay
31%6%15%30%16%2
2461
September1st to 10thDay
37%6%14%32%12%
2160
11th to 20thDay
35%7%17%32%8%
2146
21st to endDay
41%5%12%32%9%
1886
October1st to 10thDay
43%6%12%28%11%
1800
11th to 20thDay
46%6%13%23%11%1
1800
21st to endDay
50%6%13%22%9%
1944
November1st to 10thDay
49%6%12%18%13%2
1562
11th to 20thDay
59%5%13%15%8%
1520
21st to endDay
49%7%17%20%6%2
1520
December1st to 10thDay
59%6%16%14%5%
1520
11th to 20thDay
59%418%15%4
1915
21st to endDay
70%5%9%11%5%
2783
January1st to 10thNight
52%6%14%19%9%1
2648
11th to 20thNight
56%5%16%16%7%1
2589
21st to endNight
60%5%11%15%8%1
2575
February1st to 10thNight
50%6%13%22%9%1
2340
11th to 20thNight
44%5%15%25%9%1
2274
21st to endNight
51%5%10%21%11%1
1865
March1st to 10thNight
48%7%14%22%8%
2052
11th to 20thNight
46%414%21%13%1
1980
21st to endNight
49%412%23%10%1
2148
April1st to 10thNight
47%5%9%23%15%1
1800
11th to 20thNight
51%49%20%13%3
1768
21st to endNight
49%7%9%20%13%2
1620
May1st to 10thNight
45%6%13%20%14%1
1508
11th to 20thNight
40%7%13%23%14%3
1417
21st to endNight
39%7%13%22%17%2
1552
June1st to 10thNight
31%8%14%28%17%1
1440
11th to 20thNight
34%7%14%25%17%3
1440
21st to endNight
27%7%18%31%14%3
1440
July1st to 10thNight
22%7%16%35%19%2
1400
11th to 20thNight
24%7%18%31%17%4
1392
21st to endNight
20%7%17%33%19%5%
1491
August1st to 10thNight
30%6%15%30%15%4
1601
11th to 20thNight
31%6%17%29%16%2
1600
21st to endNight
29%6%14%30%17%4
1894
September1st to 10thNight
30%6%14%32%17%1
1800
11th to 20thNight
30%6%17%31%17%
1812
21st to endNight
37%5%13%32%13%1
2056
October1st to 10thNight
38%5%11%30%14%2
2160
11th to 20thNight
44%6%13%23%13%1
2160
21st to endNight
49%5%13%21%11%1
2412
November1st to 10thNight
43%6%12%23%14%1
2514
11th to 20thNight
54%5%13%18%10%1
2660
21st to endNight
48%6%17%22%6%1
2660
December1st to 10thNight
55%5%15%19%6%
2660
11th to 20thNight
58%6%13%17%5%2
3281
21st to endNight
65%412%15%4
4884

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
14%9%35%27%11%3
270
11th to 20thDay
19%11%35%29%5%1
254
21st to endDay
19%9%40%23%8%1
264
February1st to 10thDay
17%15%42%22%5%
240
11th to 20thDay
18%15%40%21%41
240
21st to endDay
16%14%40%28%2
198
March1st to 10thDay
18%15%41%19%8%
240
11th to 20thDay
18%10%38%23%10%2
240
21st to endDay
26%14%29%20%9%3
293
April1st to 10thDay
23%14%35%22%5%1
420
11th to 20thDay
30%11%24%24%10%1
416
21st to endDay
29%11%28%21%9%2
600
May1st to 10thDay
21%15%27%26%9%1
603
11th to 20thDay
20%11%29%23%14%4
625
21st to endDay
16%10%24%28%18%4
679
June1st to 10thDay
10%7%25%33%19%5%
630
11th to 20thDay
13%7%33%33%10%3
630
21st to endDay
12%7%29%29%16%7%
630
July1st to 10thDay
8%421%34%22%11%
621
11th to 20thDay
10%5%27%31%19%7%
618
21st to endDay
6%5%26%34%22%7%
684
August1st to 10thDay
9%422%34%25%6%
626
11th to 20thDay
13%5%20%31%23%7%
615
21st to endDay
12%6%25%30%21%6%
580
September1st to 10thDay
17%6%26%29%19%4
450
11th to 20thDay
14%5%27%30%21%3
436
21st to endDay
19%11%31%23%12%5%
270
October1st to 10thDay
18%10%29%21%16%6%
270
11th to 20thDay
16%17%36%21%9%1
270
21st to endDay
24%15%39%15%6%1
297
November1st to 10thDay
19%12%34%24%9%2
270
11th to 20thDay
19%17%37%21%5%
270
21st to endDay
21%13%41%20%5%
270
December1st to 10thDay
14%11%43%22%10%
270
11th to 20thDay
20%16%33%27%4
270
21st to endDay
27%15%34%22%2
297
January1st to 10thNight
12%12%34%32%9%1
950
11th to 20thNight
18%10%35%30%6%1
925
21st to endNight
19%10%35%29%6%1
990
February1st to 10thNight
12%11%40%28%7%1
900
11th to 20thNight
13%12%39%28%7%1
879
21st to endNight
18%12%34%27%9%
681
March1st to 10thNight
16%11%34%29%9%
612
11th to 20thNight
18%9%38%27%8%
540
21st to endNight
21%11%29%25%12%1
594
April1st to 10thNight
20%11%35%28%7%
540
11th to 20thNight
23%9%31%29%8%
533
21st to endNight
22%10%31%28%9%1
540
May1st to 10thNight
20%10%34%29%6%1
540
11th to 20thNight
16%8%32%31%11%1
531
21st to endNight
12%7%27%37%16%1
584
June1st to 10thNight
11%426%43%16%
540
11th to 20thNight
9%429%46%10%
540
21st to endNight
8%423%47%16%2
540
July1st to 10thNight
6%218%42%29%2
525
11th to 20thNight
7%424%45%19%2
522
21st to endNight
5%125%47%20%2
591
August1st to 10thNight
7%415%51%22%1
537
11th to 20thNight
14%319%34%29%2
534
21st to endNight
8%324%39%23%2
594
September1st to 10thNight
11%5%23%39%20%2
540
11th to 20thNight
10%5%29%36%17%3
540
21st to endNight
15%9%31%31%13%1
616
October1st to 10thNight
19%8%28%31%14%1
720
11th to 20thNight
22%9%31%28%8%1
720
21st to endNight
25%10%26%32%7%
792
November1st to 10thNight
19%11%31%31%8%1
848
11th to 20thNight
18%13%35%26%7%1
950
21st to endNight
18%13%36%25%7%
950
December1st to 10thNight
16%11%35%30%7%1
950
11th to 20thNight
20%9%37%26%7%
950
21st to endNight
23%12%33%25%6%
1045
Page generated at 2024-01-12 15:17:47. Version ac07

Copyright 2024 Attilla Danko


Lino Lakes Clear Sky Chart |Charts Home