Minocqua
Clear Sky Chart
History

This sumarizes the distribution of each different forecast outcome for the Minocqua clear sky chart from 2005-11-06 to 2024-07-03.

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 Type	Minimum conditions for hour to be usable				Out of hours
	Clear of Clouds	Transparency	Seeing	Sky Brightness
Planetary:	50%	(no limit)	Average	(no limit)	Nighttime Hours
Deep Sky:	70%	Average	(no limit)	5.9	Nighttime Hours
CCD Imaging:	70%	Below Average	Poor	(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

By Month

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 Forecast	Data Points
Cloud Cover	Day	14% 11% 4 10% 5% 5% 5% 4 5% 6% 31%	89584
	Night	14% 12% 5% 10% 5% 5% 4 4 5% 6% 31%	89670
Transparency	Day	53% 5% 11% 20% 10% 1	89338
	Night	54% 5% 11% 20% 9% 1	89521
Seeing	Day	20% 13% 32% 22% 10% 3	15556
	Night	19% 11% 32% 27% 10% 1	25504

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
Month	Days in Month		Occurrence of each Forecast	Data Points
January	1st to 10th	Day	12% 17% 8% 21% 6% 5% 3 2 4 5% 16%	2527
	11th to 20th	Day	8% 17% 5% 16% 10% 9% 9% 4 5% 5% 13%	2530
	21st to end	Day	11% 17% 10% 19% 6% 4 4 3 4 6% 15%	2783
February	1st to 10th	Day	8% 14% 4 11% 6% 6% 6% 6% 7% 6% 26%	1709
	11th to 20th	Day	9% 12% 5% 15% 7% 5% 5% 5% 5% 7% 26%	1711
	21st to end	Day	13% 13% 7% 12% 8% 6% 5% 3 4 6% 24%	1570
March	1st to 10th	Day	12% 12% 3 10% 5% 4 3 3 4 5% 38%	3120
	11th to 20th	Day	8% 13% 4 12% 8% 5% 5% 4 6% 7% 28%	3374
	21st to end	Day	19% 14% 5% 13% 5% 4 4 3 4 4 25%	4099
April	1st to 10th	Day	15% 14% 4 10% 5% 5% 5% 3 6% 5% 28%	2280
	11th to 20th	Day	19% 13% 5% 9% 5% 4 4 3 4 4 30%	2254
	21st to end	Day	17% 12% 4 8% 5% 5% 3 3 5% 6% 31%	2410
May	1st to 10th	Day	18% 9% 3 6% 4 4 4 3 5% 6% 38%	4399
	11th to 20th	Day	15% 8% 2 7% 5% 4 5% 4 6% 6% 38%	4399
	21st to end	Day	16% 9% 3 8% 5% 5% 4 3 5% 7% 35%	4824
June	1st to 10th	Day	15% 6% 2 6% 4 4 4 4 6% 9% 39%	2660
	11th to 20th	Day	16% 6% 2 6% 5% 5% 5% 4 5% 7% 38%	2660
	21st to end	Day	13% 6% 2 7% 5% 5% 5% 5% 7% 8% 37%	2660
July	1st to 10th	Day	8% 4 2 5% 3 4 5% 5% 8% 11% 45%	2549
	11th to 20th	Day	11% 6% 2 7% 5% 4 4 4 6% 7% 44%	2520
	21st to end	Day	8% 5% 2 5% 5% 5% 5% 5% 6% 8% 46%	2743
August	1st to 10th	Day	11% 6% 2 6% 4 5% 5% 5% 7% 9% 40%	2507
	11th to 20th	Day	14% 7% 2 5% 5% 4 4 4 6% 7% 42%	2301
	21st to end	Day	15% 7% 2 5% 4 4 4 3 4 7% 42%	2376
September	1st to 10th	Day	16% 7% 3 6% 4 3 5% 4 6% 8% 41%	2160
	11th to 20th	Day	15% 7% 2 6% 4 5% 5% 4 6% 7% 38%	2120
	21st to end	Day	20% 10% 3 7% 4 4 4 4 5% 7% 33%	1980
October	1st to 10th	Day	19% 10% 3 6% 4 4 4 4 5% 7% 34%	1800
	11th to 20th	Day	21% 16% 3 9% 4 5% 5% 3 5% 6% 23%	1796
	21st to end	Day	22% 17% 5% 7% 4 3 3 3 5% 5% 25%	1782
November	1st to 10th	Day	16% 16% 4 8% 5% 3 5% 4 5% 6% 30%	1672
	11th to 20th	Day	16% 19% 6% 13% 7% 5% 3 3 4 4 19%	1568
	21st to end	Day	15% 14% 7% 16% 8% 6% 4 4 5% 5% 18%	1520
December	1st to 10th	Day	11% 18% 7% 15% 8% 7% 4 4 5% 5% 16%	1520
	11th to 20th	Day	13% 17% 6% 16% 9% 7% 6% 4 4 4 15%	1918
	21st to end	Day	20% 24% 6% 15% 5% 5% 4 3 3 2 13%	2783
January	1st to 10th	Night	12% 15% 7% 21% 7% 6% 4 3 4 4 18%	4428
	11th to 20th	Night	8% 15% 6% 17% 9% 8% 7% 5% 6% 5% 13%	4440
	21st to end	Night	10% 18% 9% 18% 6% 4 4 3 4 5% 18%	4884
February	1st to 10th	Night	8% 13% 6% 13% 7% 6% 5% 4 6% 6% 27%	2470
	11th to 20th	Night	9% 11% 5% 11% 7% 7% 5% 4 6% 7% 28%	2356
	21st to end	Night	11% 16% 5% 10% 6% 5% 5% 4 5% 6% 26%	1884
March	1st to 10th	Night	9% 8% 3 7% 4 5% 4 4 6% 10% 39%	3733
	11th to 20th	Night	9% 10% 4 14% 6% 4 5% 3 4 6% 34%	3615
	21st to end	Night	17% 14% 5% 10% 5% 4 5% 3 5% 4 28%	3531
April	1st to 10th	Night	21% 11% 4 8% 5% 3 4 4 4 6% 30%	1900
	11th to 20th	Night	22% 10% 4 6% 4 2 3 3 5% 5% 35%	1875
	21st to end	Night	18% 10% 4 6% 5% 3 4 4 5% 6% 34%	1764
May	1st to 10th	Night	18% 8% 3 8% 4 4 3 3 5% 7% 37%	2506
	11th to 20th	Night	13% 8% 2 7% 5% 4 4 3 4 5% 45%	2506
	21st to end	Night	15% 8% 3 8% 5% 5% 4 3 5% 7% 37%	2743
June	1st to 10th	Night	13% 7% 2 5% 4 4 5% 3 6% 8% 44%	1520
	11th to 20th	Night	14% 7% 3 6% 6% 5% 5% 4 5% 8% 39%	1520
	21st to end	Night	12% 6% 2 6% 5% 4 5% 4 6% 9% 41%	1520
July	1st to 10th	Night	8% 5% 1 3 3 3 4 4 6% 9% 54%	1456
	11th to 20th	Night	11% 5% 2 5% 4 4 4 3 7% 7% 48%	1440
	21st to end	Night	8% 3 2 5% 4 3 4 3 6% 8% 54%	1575
August	1st to 10th	Night	9% 5% 2 5% 5% 5% 4 5% 5% 7% 47%	1432
	11th to 20th	Night	14% 5% 2 6% 3 5% 4 3 5% 6% 48%	1596
	21st to end	Night	13% 7% 2 5% 4 3 4 4 4 6% 48%	1980
September	1st to 10th	Night	14% 6% 2 4 3 4 4 4 5% 7% 48%	1800
	11th to 20th	Night	12% 6% 1 5% 4 4 4 3 6% 7% 47%	1821
	21st to end	Night	16% 9% 2 6% 4 4 4 3 6% 7% 38%	1980
October	1st to 10th	Night	17% 8% 2 6% 5% 3 3 4 5% 7% 40%	2157
	11th to 20th	Night	18% 13% 4 7% 4 5% 5% 3 5% 6% 30%	2164
	21st to end	Night	19% 14% 4 8% 5% 4 5% 4 5% 7% 25%	2574
November	1st to 10th	Night	16% 13% 5% 8% 4 3 3 4 4 7% 33%	2406
	11th to 20th	Night	14% 16% 7% 13% 6% 4 4 3 4 6% 23%	2611
	21st to end	Night	14% 15% 6% 14% 6% 5% 4 4 5% 5% 21%	2660
December	1st to 10th	Night	11% 16% 6% 15% 8% 7% 5% 3 5% 5% 20%	2660
	11th to 20th	Night	11% 16% 8% 15% 8% 5% 6% 4 5% 4 18%	3279
	21st to end	Night	23% 22% 6% 11% 5% 4 3 3 4 4 15%	4884

Transparency (when cloud cover <= 30%)
Color Meanings: Too cloudy to forecast Poor Below Average Average Above average Transparent
Month	Days in Month		Occurrence of each Forecast	Data Points
January	1st to 10th	Day	71% 4 5% 16% 3	2528
	11th to 20th	Day	73% 4 9% 8% 5%	2530
	21st to end	Day	71% 3 10% 11% 4	2783
February	1st to 10th	Day	56% 5% 9% 18% 11%	1709
	11th to 20th	Day	56% 6% 9% 22% 6%	1720
	21st to end	Day	62% 4 8% 16% 9% 1	1570
March	1st to 10th	Day	49% 4 13% 18% 16% 1	3120
	11th to 20th	Day	55% 4 13% 18% 9% 1	3374
	21st to end	Day	63% 4 9% 17% 6% 1	4099
April	1st to 10th	Day	58% 4 9% 18% 10% 1	2280
	11th to 20th	Day	57% 3 9% 20% 9% 1	2254
	21st to end	Day	54% 4 9% 19% 12% 1	2410
May	1st to 10th	Day	47% 5% 9% 25% 14% 1	4440
	11th to 20th	Day	44% 6% 12% 26% 11% 1	4403
	21st to end	Day	50% 5% 10% 20% 15% 1	4837
June	1st to 10th	Day	41% 5% 14% 27% 12% 1	2660
	11th to 20th	Day	45% 6% 13% 22% 14% 1	2660
	21st to end	Day	43% 7% 16% 24% 9% 1	2660
July	1st to 10th	Day	30% 6% 16% 33% 14% 1	2480
	11th to 20th	Day	37% 6% 12% 27% 15% 2	2445
	21st to end	Day	34% 6% 16% 26% 17% 1	2591
August	1st to 10th	Day	40% 7% 15% 27% 9% 2	2492
	11th to 20th	Day	42% 6% 15% 25% 13%	2301
	21st to end	Day	41% 5% 13% 24% 15% 1	2376
September	1st to 10th	Day	41% 5% 13% 29% 12%	2160
	11th to 20th	Day	43% 6% 18% 25% 8%	2120
	21st to end	Day	51% 6% 12% 25% 7%	1980
October	1st to 10th	Day	50% 4 13% 25% 7%	1800
	11th to 20th	Day	62% 5% 10% 16% 7%	1796
	21st to end	Day	61% 5% 10% 18% 6%	1782
November	1st to 10th	Day	54% 5% 11% 21% 8% 1	1672
	11th to 20th	Day	68% 4 9% 13% 6%	1568
	21st to end	Day	68% 5% 12% 12% 3 1	1520
December	1st to 10th	Day	70% 5% 8% 14% 3	1520
	11th to 20th	Day	72% 4 10% 10% 4	1915
	21st to end	Day	78% 4 4 10% 4	2783
January	1st to 10th	Night	69% 5% 8% 16% 2 1	4428
	11th to 20th	Night	70% 5% 11% 11% 3	4440
	21st to end	Night	69% 4 7% 15% 4	4884
February	1st to 10th	Night	57% 3 8% 19% 11% 1	2470
	11th to 20th	Night	55% 5% 10% 21% 8% 1	2357
	21st to end	Night	59% 4 11% 18% 8% 1	1884
March	1st to 10th	Night	39% 6% 17% 24% 12% 1	3733
	11th to 20th	Night	51% 4 10% 25% 9% 1	3615
	21st to end	Night	59% 4 8% 18% 9% 1	3531
April	1st to 10th	Night	55% 4 8% 18% 14% 1	1900
	11th to 20th	Night	51% 4 8% 23% 12% 2	1875
	21st to end	Night	50% 4 10% 20% 14% 1	1764
May	1st to 10th	Night	47% 4 14% 21% 13% 1	2530
	11th to 20th	Night	41% 5% 10% 26% 15% 3	2507
	21st to end	Night	46% 6% 15% 18% 14% 1	2751
June	1st to 10th	Night	38% 6% 14% 29% 13%	1520
	11th to 20th	Night	43% 5% 13% 22% 15% 1	1520
	21st to end	Night	38% 7% 16% 29% 10% 1	1520
July	1st to 10th	Night	27% 5% 15% 33% 18% 1	1416
	11th to 20th	Night	34% 6% 15% 28% 14% 2	1392
	21st to end	Night	26% 5% 18% 32% 15% 3	1487
August	1st to 10th	Night	34% 8% 13% 30% 13% 2	1423
	11th to 20th	Night	37% 6% 13% 27% 15% 2	1596
	21st to end	Night	37% 5% 13% 26% 16% 3	1980
September	1st to 10th	Night	35% 6% 13% 32% 14% 1	1800
	11th to 20th	Night	35% 5% 16% 34% 9%	1821
	21st to end	Night	45% 5% 13% 27% 8%	1980
October	1st to 10th	Night	43% 7% 13% 27% 10% 1	2157
	11th to 20th	Night	54% 5% 13% 21% 7% 1	2164
	21st to end	Night	59% 5% 13% 17% 6%	2574
November	1st to 10th	Night	52% 4 12% 22% 10%	2406
	11th to 20th	Night	63% 5% 12% 13% 7% 1	2611
	21st to end	Night	64% 4 12% 15% 4 1	2660
December	1st to 10th	Night	67% 4 11% 15% 3	2660
	11th to 20th	Night	69% 5% 9% 13% 4	3281
	21st to end	Night	74% 4 5% 13% 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
Month	Days in Month		Occurrence of each Forecast	Data Points
January	1st to 10th	Day	17% 14% 35% 24% 7% 2	270
	11th to 20th	Day	23% 13% 37% 21% 6%	270
	21st to end	Day	20% 11% 42% 23% 4	297
February	1st to 10th	Day	19% 17% 41% 17% 4 2	270
	11th to 20th	Day	17% 23% 41% 13% 6%	270
	21st to end	Day	20% 20% 48% 12% 1	225
March	1st to 10th	Day	18% 20% 41% 16% 6%	270
	11th to 20th	Day	19% 17% 39% 16% 8%	270
	21st to end	Day	24% 15% 34% 19% 7% 2	466
April	1st to 10th	Day	25% 13% 35% 22% 5% 1	460
	11th to 20th	Day	30% 16% 28% 19% 7% 1	452
	21st to end	Day	25% 14% 29% 21% 9% 1	474
May	1st to 10th	Day	23% 17% 30% 22% 6% 2	653
	11th to 20th	Day	21% 13% 31% 21% 11% 3	675
	21st to end	Day	22% 11% 31% 22% 11% 3	734
June	1st to 10th	Day	15% 14% 32% 24% 12% 3	680
	11th to 20th	Day	20% 12% 33% 24% 9% 3	680
	21st to end	Day	16% 11% 32% 23% 13% 4	680
July	1st to 10th	Day	8% 6% 30% 30% 17% 8%	632
	11th to 20th	Day	13% 9% 29% 27% 16% 6%	618
	21st to end	Day	9% 7% 32% 29% 15% 8%	684
August	1st to 10th	Day	12% 7% 29% 29% 18% 5%	626
	11th to 20th	Day	17% 7% 19% 29% 23% 5%	571
	21st to end	Day	21% 9% 21% 26% 17% 6%	495
September	1st to 10th	Day	21% 8% 24% 25% 17% 5%	450
	11th to 20th	Day	15% 9% 30% 28% 15% 3	450
	21st to end	Day	25% 13% 26% 22% 10% 3	450
October	1st to 10th	Day	21% 18% 23% 23% 11% 2	270
	11th to 20th	Day	26% 23% 33% 13% 5%	270
	21st to end	Day	32% 20% 35% 10% 3	297
November	1st to 10th	Day	25% 14% 37% 18% 5% 1	270
	11th to 20th	Day	27% 22% 36% 12% 2 2	270
	21st to end	Day	23% 21% 39% 13% 4	270
December	1st to 10th	Day	20% 14% 42% 18% 5% 1	270
	11th to 20th	Day	24% 17% 41% 14% 3	270
	21st to end	Day	26% 22% 35% 14% 2 1	297
January	1st to 10th	Night	17% 13% 41% 23% 6%	950
	11th to 20th	Night	20% 10% 41% 22% 7% 1	950
	21st to end	Night	20% 9% 39% 25% 6%	1045
February	1st to 10th	Night	14% 14% 38% 26% 7% 1	950
	11th to 20th	Night	15% 16% 39% 23% 6%	882
	21st to end	Night	21% 13% 39% 24% 4	628
March	1st to 10th	Night	16% 13% 35% 27% 8% 1	760
	11th to 20th	Night	18% 11% 39% 24% 7%	653
	21st to end	Night	20% 11% 29% 28% 10% 1	627
April	1st to 10th	Night	25% 9% 35% 25% 5% 1	570
	11th to 20th	Night	28% 9% 28% 28% 7%	563
	21st to end	Night	23% 8% 33% 26% 9% 1	570
May	1st to 10th	Night	22% 11% 30% 29% 7% 1	570
	11th to 20th	Night	19% 9% 31% 30% 9% 1	561
	21st to end	Night	17% 7% 28% 34% 14%	617
June	1st to 10th	Night	16% 6% 29% 36% 12% 1	570
	11th to 20th	Night	16% 8% 31% 34% 11% 1	570
	21st to end	Night	15% 6% 23% 39% 15% 2	570
July	1st to 10th	Night	10% 3 23% 39% 24% 1	531
	11th to 20th	Night	14% 6% 29% 30% 21% 1	522
	21st to end	Night	9% 3 25% 41% 20% 3	591
August	1st to 10th	Night	11% 2 22% 41% 22% 1	537
	11th to 20th	Night	16% 3 19% 33% 26% 3	534
	21st to end	Night	16% 5% 24% 32% 21% 2	594
September	1st to 10th	Night	18% 5% 24% 33% 16% 4	540
	11th to 20th	Night	16% 6% 27% 35% 15% 2	561
	21st to end	Night	21% 10% 29% 28% 12% 1	720
October	1st to 10th	Night	22% 9% 29% 25% 14% 1	720
	11th to 20th	Night	24% 15% 30% 23% 8%	720
	21st to end	Night	26% 10% 32% 25% 7%	792
November	1st to 10th	Night	23% 11% 37% 23% 6% 1	740
	11th to 20th	Night	22% 17% 35% 20% 5%	901
	21st to end	Night	24% 20% 32% 20% 4	950
December	1st to 10th	Night	19% 18% 36% 21% 5% 1	950
	11th to 20th	Night	21% 15% 36% 19% 7% 1	950
	21st to end	Night	30% 14% 34% 19% 4	1045

Page generated at 2024-06-29 21:08:49. Version ac07

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