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 2026-03-03.

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	13% 11% 4 9% 5% 5% 5% 4 5% 7% 33%	131277
	Night	13% 11% 4 11% 6% 5% 4 4 5% 6% 31%	130226
Transparency	Day	51% 4 11% 22% 11% 1	134715
	Night	53% 4 11% 20% 10% 1	134862
Seeing	Day	20% 14% 32% 22% 10% 3	17817
	Night	19% 11% 32% 27% 10% 1	27864

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	8% 14% 6% 20% 11% 7% 4 3 4 5% 16%	4691
	11th to 20th	Day	6% 17% 7% 15% 9% 9% 10% 6% 5% 5% 11%	4710
	21st to end	Day	7% 11% 8% 15% 5% 6% 8% 4 6% 8% 22%	5156
February	1st to 10th	Day	8% 14% 5% 12% 7% 6% 5% 6% 7% 6% 25%	1889
	11th to 20th	Day	9% 11% 5% 15% 7% 5% 5% 5% 5% 7% 27%	1897
	21st to end	Day	12% 14% 7% 13% 7% 6% 5% 3 4 6% 24%	1730
March	1st to 10th	Day	14% 10% 3 8% 5% 5% 4 3 4 6% 40%	4500
	11th to 20th	Day	11% 11% 4 12% 7% 5% 5% 4 5% 8% 28%	4832
	21st to end	Day	22% 13% 5% 11% 4 3 4 3 3 4 27%	5873
April	1st to 10th	Day	16% 15% 4 10% 5% 5% 5% 3 6% 5% 27%	2400
	11th to 20th	Day	19% 14% 5% 9% 5% 4 4 3 4 4 30%	2374
	21st to end	Day	17% 13% 4 8% 5% 5% 3 3 5% 6% 30%	2537
May	1st to 10th	Day	16% 8% 2 6% 3 3 3 3 4 5% 46%	6319
	11th to 20th	Day	13% 8% 3 7% 5% 4 5% 4 6% 6% 38%	6319
	21st to end	Day	15% 9% 3 7% 5% 5% 4 3 5% 7% 36%	6935
June	1st to 10th	Day	15% 7% 2 6% 4 4 4 4 6% 9% 39%	2800
	11th to 20th	Day	16% 6% 2 6% 5% 5% 5% 4 6% 7% 36%	2800
	21st to end	Day	14% 6% 2 7% 5% 5% 5% 5% 7% 8% 36%	2800
July	1st to 10th	Day	12% 5% 2 5% 4 5% 5% 5% 7% 10% 42%	6360
	11th to 20th	Day	10% 5% 2 5% 4 3 4 4 6% 9% 48%	6360
	21st to end	Day	9% 6% 2 6% 4 4 5% 4 6% 8% 44%	6924
August	1st to 10th	Day	13% 7% 3 6% 5% 5% 5% 4 6% 8% 37%	4563
	11th to 20th	Day	15% 6% 2 5% 4 3 4 3 5% 7% 47%	4154
	21st to end	Day	15% 9% 3 6% 4 4 5% 4 5% 7% 38%	4312
September	1st to 10th	Day	15% 7% 3 6% 4 3 5% 4 6% 8% 41%	2400
	11th to 20th	Day	14% 7% 2 6% 4 5% 5% 4 6% 7% 39%	2355
	21st to end	Day	18% 9% 3 6% 4 4 4 4 5% 6% 36%	2200
October	1st to 10th	Day	18% 9% 3 6% 3 4 4 4 5% 7% 36%	2000
	11th to 20th	Day	20% 16% 3 8% 5% 5% 4 3 5% 6% 25%	1995
	21st to end	Day	21% 16% 4 7% 4 3 4 3 5% 6% 26%	1980
November	1st to 10th	Day	16% 16% 4 8% 5% 3 5% 3 5% 6% 29%	1852
	11th to 20th	Day	15% 19% 6% 13% 7% 5% 3 3 4 4 21%	1732
	21st to end	Day	15% 15% 7% 17% 8% 5% 4 4 4 5% 17%	1680
December	1st to 10th	Day	8% 17% 9% 28% 9% 6% 4 3 3 3 11%	2690
	11th to 20th	Day	10% 21% 7% 18% 9% 5% 4 3 3 3 17%	3088
	21st to end	Day	19% 23% 6% 13% 6% 4 4 3 4 3 15%	4070
January	1st to 10th	Night	9% 14% 6% 20% 12% 8% 4 3 4 4 16%	8232
	11th to 20th	Night	6% 16% 6% 18% 10% 7% 7% 6% 6% 5% 11%	8280
	21st to end	Night	6% 12% 7% 16% 8% 6% 6% 4 5% 6% 23%	9058
February	1st to 10th	Night	8% 14% 6% 13% 7% 6% 5% 4 6% 5% 26%	2730
	11th to 20th	Night	9% 11% 5% 12% 7% 7% 5% 4 6% 7% 28%	2610
	21st to end	Night	10% 16% 5% 10% 7% 6% 5% 4 5% 6% 26%	2076
March	1st to 10th	Night	11% 7% 3 8% 4 4 4 3 6% 9% 41%	5398
	11th to 20th	Night	10% 12% 5% 14% 6% 5% 5% 4 6% 7% 28%	5171
	21st to end	Night	20% 13% 5% 9% 5% 4 5% 3 4 5% 28%	5055
April	1st to 10th	Night	20% 11% 4 8% 5% 3 4 3 4 6% 30%	2000
	11th to 20th	Night	22% 11% 4 6% 4 2 3 3 5% 5% 35%	1975
	21st to end	Night	18% 10% 4 6% 5% 3 4 4 5% 6% 35%	1857
May	1st to 10th	Night	14% 7% 3 7% 3 4 3 2 5% 7% 45%	3596
	11th to 20th	Night	11% 7% 3 7% 5% 4 4 3 5% 5% 45%	3596
	21st to end	Night	14% 8% 3 8% 4 5% 4 3 5% 7% 41%	3942
June	1st to 10th	Night	12% 8% 2 5% 4 4 5% 3 6% 8% 43%	1600
	11th to 20th	Night	15% 7% 3 6% 6% 5% 5% 4 5% 8% 38%	1600
	21st to end	Night	13% 6% 2 6% 5% 4 5% 4 6% 9% 41%	1600
July	1st to 10th	Night	12% 5% 2 5% 4 3 4 4 6% 9% 47%	3618
	11th to 20th	Night	12% 4 2 5% 3 3 3 3 6% 7% 53%	3617
	21st to end	Night	10% 5% 2 6% 4 3 4 3 5% 8% 50%	3947
August	1st to 10th	Night	11% 7% 2 6% 4 4 5% 5% 6% 8% 42%	2597
	11th to 20th	Night	13% 5% 2 5% 3 4 3 3 5% 6% 51%	2897
	21st to end	Night	16% 9% 3 6% 4 3 3 3 3 6% 44%	3586
September	1st to 10th	Night	14% 6% 2 4 3 4 4 4 5% 7% 48%	2000
	11th to 20th	Night	12% 7% 1 5% 4 4 4 3 6% 7% 46%	2024
	21st to end	Night	15% 9% 2 6% 4 4 4 3 6% 6% 40%	2200
October	1st to 10th	Night	16% 7% 2 6% 5% 3 3 4 5% 7% 42%	2397
	11th to 20th	Night	18% 12% 4 7% 4 4 5% 3 5% 7% 31%	2405
	21st to end	Night	19% 15% 4 8% 5% 4 4 4 5% 7% 26%	2860
November	1st to 10th	Night	17% 13% 5% 8% 4 3 3 4 4 6% 33%	2666
	11th to 20th	Night	14% 17% 6% 12% 6% 4 4 3 4 5% 25%	2887
	21st to end	Night	15% 15% 6% 15% 7% 5% 4 4 5% 5% 20%	2940
December	1st to 10th	Night	10% 14% 7% 22% 10% 6% 4 3 5% 4 15%	4720
	11th to 20th	Night	10% 19% 9% 16% 7% 5% 5% 4 4 4 17%	5339
	21st to end	Night	22% 19% 5% 12% 6% 5% 3 3 4 5% 15%	7150

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 6% 14% 4	4692
	11th to 20th	Day	73% 4 7% 10% 6%	4710
	21st to end	Day	61% 3 8% 18% 10%	5156
February	1st to 10th	Day	56% 4 10% 18% 11%	1889
	11th to 20th	Day	55% 6% 8% 23% 7%	1906
	21st to end	Day	62% 4 8% 16% 9% 1	1730
March	1st to 10th	Day	47% 3 14% 19% 15% 2	4500
	11th to 20th	Day	54% 4 13% 17% 10% 1	4832
	21st to end	Day	62% 3 8% 14% 12%	5875
April	1st to 10th	Day	58% 4 9% 18% 10% 1	2400
	11th to 20th	Day	57% 3 9% 20% 9% 1	2374
	21st to end	Day	55% 4 9% 19% 13% 1	2537
May	1st to 10th	Day	40% 4 9% 28% 17% 2	6357
	11th to 20th	Day	44% 6% 11% 25% 11% 3	6323
	21st to end	Day	47% 4 9% 22% 17% 1	6949
June	1st to 10th	Day	41% 5% 14% 27% 12% 1	2800
	11th to 20th	Day	46% 6% 13% 21% 13% 1	2800
	21st to end	Day	43% 7% 16% 24% 9% 1	2800
July	1st to 10th	Day	37% 6% 15% 33% 8% 1	6291
	11th to 20th	Day	32% 5% 17% 33% 12% 1	6285
	21st to end	Day	36% 5% 13% 29% 15%	6728
August	1st to 10th	Day	44% 6% 15% 22% 12% 1	4548
	11th to 20th	Day	37% 5% 15% 32% 12%	4195
	21st to end	Day	45% 5% 15% 24% 10% 1	4311
September	1st to 10th	Day	41% 5% 14% 29% 11%	2400
	11th to 20th	Day	42% 6% 19% 26% 7%	2355
	21st to end	Day	47% 6% 11% 26% 10%	2200
October	1st to 10th	Day	36% 3 14% 29% 17%	3260
	11th to 20th	Day	54% 4 9% 19% 14%	3223
	21st to end	Day	53% 5% 16% 21% 5%	3180
November	1st to 10th	Day	55% 5% 11% 20% 8% 1	1852
	11th to 20th	Day	66% 4 9% 14% 7%	1732
	21st to end	Day	70% 5% 11% 11% 2 1	1680
December	1st to 10th	Day	79% 4 5% 10% 2	2690
	11th to 20th	Day	73% 3 7% 10% 7%	3085
	21st to end	Day	75% 3 4 12% 6%	4070
January	1st to 10th	Night	73% 3 7% 13% 4	8233
	11th to 20th	Night	72% 4 8% 10% 6%	8280
	21st to end	Night	61% 4 7% 18% 11%	9058
February	1st to 10th	Night	58% 3 8% 19% 11% 1	2730
	11th to 20th	Night	55% 5% 10% 21% 9% 1	2611
	21st to end	Night	59% 3 11% 18% 8% 1	2076
March	1st to 10th	Night	40% 4 17% 21% 15% 2	5398
	11th to 20th	Night	55% 4 13% 20% 8% 1	5171
	21st to end	Night	59% 4 9% 16% 12% 1	5055
April	1st to 10th	Night	55% 4 7% 18% 14% 1	2000
	11th to 20th	Night	52% 4 8% 22% 12% 2	1975
	21st to end	Night	50% 4 11% 20% 15% 1	1857
May	1st to 10th	Night	39% 4 14% 26% 15% 3	3620
	11th to 20th	Night	41% 6% 12% 21% 18% 2	3597
	21st to end	Night	44% 4 12% 22% 16% 1	3950
June	1st to 10th	Night	38% 6% 14% 28% 13%	1600
	11th to 20th	Night	45% 5% 13% 22% 15% 1	1600
	21st to end	Night	38% 6% 15% 28% 10% 1	1600
July	1st to 10th	Night	34% 5% 19% 30% 9% 2	3580
	11th to 20th	Night	31% 4 18% 34% 12% 1	3572
	21st to end	Night	33% 5% 16% 28% 17% 2	3832
August	1st to 10th	Night	38% 7% 14% 24% 15% 1	2588
	11th to 20th	Night	34% 5% 16% 30% 13% 2	2922
	21st to end	Night	43% 5% 13% 26% 13% 2	3586
September	1st to 10th	Night	35% 6% 13% 33% 13% 1	2000
	11th to 20th	Night	36% 5% 16% 34% 8%	2024
	21st to end	Night	43% 5% 13% 28% 10% 1	2200
October	1st to 10th	Night	33% 4 9% 33% 19% 2	3917
	11th to 20th	Night	43% 4 11% 29% 12%	3916
	21st to end	Night	57% 4 11% 20% 8%	4610
November	1st to 10th	Night	52% 4 12% 21% 10%	2666
	11th to 20th	Night	62% 4 12% 14% 7% 1	2887
	21st to end	Night	66% 4 11% 14% 4 1	2940
December	1st to 10th	Night	73% 4 9% 12% 2	4720
	11th to 20th	Night	71% 4 7% 12% 7%	5341
	21st to end	Night	73% 3 5% 12% 7%	7150

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	16% 16% 36% 24% 6% 2	330
	11th to 20th	Day	22% 15% 36% 21% 5%	330
	21st to end	Day	18% 15% 42% 20% 4	363
February	1st to 10th	Day	19% 18% 42% 16% 3 2	330
	11th to 20th	Day	17% 22% 42% 15% 5%	330
	21st to end	Day	21% 21% 47% 11% 1	273
March	1st to 10th	Day	19% 20% 40% 16% 5%	306
	11th to 20th	Day	20% 18% 39% 14% 8%	300
	21st to end	Day	25% 15% 33% 18% 7% 2	508
April	1st to 10th	Day	27% 13% 34% 20% 5% 1	500
	11th to 20th	Day	30% 17% 27% 18% 7% 1	492
	21st to end	Day	26% 14% 30% 20% 8% 1	515
May	1st to 10th	Day	23% 16% 30% 23% 7% 2	703
	11th to 20th	Day	21% 13% 31% 21% 10% 3	725
	21st to end	Day	22% 12% 31% 21% 11% 3	789
June	1st to 10th	Day	16% 13% 33% 23% 12% 3	730
	11th to 20th	Day	21% 11% 33% 23% 9% 3	730
	21st to end	Day	17% 11% 33% 22% 12% 4	730
July	1st to 10th	Day	8% 7% 29% 31% 17% 8%	721
	11th to 20th	Day	13% 9% 29% 26% 16% 5%	718
	21st to end	Day	9% 7% 32% 29% 15% 8%	794
August	1st to 10th	Day	13% 7% 28% 28% 18% 6%	726
	11th to 20th	Day	17% 7% 20% 28% 23% 5%	665
	21st to end	Day	19% 9% 23% 26% 17% 6%	583
September	1st to 10th	Day	20% 11% 23% 24% 16% 6%	530
	11th to 20th	Day	15% 8% 29% 30% 15% 3	530
	21st to end	Day	22% 12% 25% 23% 14% 4	530
October	1st to 10th	Day	20% 19% 27% 22% 10% 3	330
	11th to 20th	Day	25% 24% 32% 13% 5%	330
	21st to end	Day	29% 18% 36% 12% 3 1	363
November	1st to 10th	Day	27% 15% 36% 16% 5% 1	330
	11th to 20th	Day	28% 22% 33% 12% 3 2	330
	21st to end	Day	24% 21% 40% 12% 3	330
December	1st to 10th	Day	18% 15% 46% 17% 4 1	330
	11th to 20th	Day	22% 21% 39% 15% 3	330
	21st to end	Day	27% 21% 35% 14% 2 1	363
January	1st to 10th	Night	17% 14% 40% 23% 6%	1050
	11th to 20th	Night	19% 11% 42% 21% 6% 1	1050
	21st to end	Night	19% 11% 40% 24% 6%	1155
February	1st to 10th	Night	15% 15% 39% 24% 7%	1050
	11th to 20th	Night	15% 17% 38% 24% 6%	976
	21st to end	Night	20% 13% 40% 23% 4	692
March	1st to 10th	Night	16% 13% 36% 26% 8% 1	809
	11th to 20th	Night	18% 13% 38% 24% 7%	687
	21st to end	Night	20% 11% 30% 27% 10% 1	660
April	1st to 10th	Night	25% 10% 35% 25% 5% 1	600
	11th to 20th	Night	28% 9% 27% 28% 7%	593
	21st to end	Night	24% 8% 33% 26% 8% 1	600
May	1st to 10th	Night	21% 11% 31% 30% 7% 1	600
	11th to 20th	Night	18% 9% 31% 31% 9% 1	591
	21st to end	Night	16% 8% 28% 34% 13%	650
June	1st to 10th	Night	16% 6% 29% 36% 12% 1	600
	11th to 20th	Night	18% 8% 30% 34% 10% 1	600
	21st to end	Night	16% 7% 23% 38% 15% 2	600
July	1st to 10th	Night	10% 3 23% 40% 23% 1	585
	11th to 20th	Night	13% 6% 29% 30% 21% 1	582
	21st to end	Night	8% 3 25% 41% 19% 3	657
August	1st to 10th	Night	12% 3 22% 40% 22% 2	597
	11th to 20th	Night	15% 3 20% 34% 25% 3	594
	21st to end	Night	16% 5% 23% 32% 22% 2	660
September	1st to 10th	Night	18% 5% 24% 32% 16% 4	600
	11th to 20th	Night	16% 5% 25% 36% 16% 2	624
	21st to end	Night	19% 9% 27% 30% 13% 1	800
October	1st to 10th	Night	21% 10% 30% 26% 14% 1	800
	11th to 20th	Night	24% 15% 31% 23% 7%	800
	21st to end	Night	26% 10% 31% 25% 7%	880
November	1st to 10th	Night	24% 11% 37% 22% 5% 1	820
	11th to 20th	Night	23% 17% 34% 20% 5%	997
	21st to end	Night	24% 20% 32% 20% 4	1050
December	1st to 10th	Night	19% 18% 37% 21% 5% 1	1050
	11th to 20th	Night	21% 17% 36% 19% 6% 1	1050
	21st to end	Night	30% 14% 34% 19% 4	1155

Page generated at 2026-02-28 00:40:23. Version ac07

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