Eisenhower State Park(KS)
Clear Sky Chart
History

This sumarizes the distribution of each different forecast outcome for the Eisenhower State Park(KS) clear sky chart from 2005-11-06 to 2025-11-03.

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	10% 6% 3 6% 4 4 4 3 5% 7% 47%	126311
	Night	10% 6% 2 6% 4 4 4 3 5% 7% 50%	123985
Transparency	Day	36% 4 11% 26% 19% 4	129949
	Night	34% 4 11% 26% 21% 4	128410
Seeing	Day	13% 9% 29% 29% 16% 4	17003
	Night	13% 9% 33% 33% 11% 1	26797

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	15% 7% 3 9% 5% 4 4 3 4 6% 39%	4077
	11th to 20th	Day	7% 8% 4 9% 6% 6% 5% 3 4 6% 41%	4080
	21st to end	Day	10% 10% 5% 8% 4 3 4 3 4 6% 43%	4488
February	1st to 10th	Day	12% 12% 3 7% 6% 4 4 3 3 6% 40%	1800
	11th to 20th	Day	10% 9% 3 9% 5% 6% 3 3 4 7% 42%	1822
	21st to end	Day	10% 7% 3 6% 5% 3 4 4 5% 7% 46%	1670
March	1st to 10th	Day	10% 7% 2 6% 4 3 3 3 5% 6% 53%	4936
	11th to 20th	Day	9% 5% 2 4 3 3 3 3 5% 6% 58%	4980
	21st to end	Day	11% 10% 5% 8% 5% 4 4 3 6% 7% 38%	5462
April	1st to 10th	Day	12% 7% 3 5% 4 3 3 3 5% 7% 48%	2250
	11th to 20th	Day	13% 9% 2 5% 4 4 4 3 5% 7% 43%	2388
	21st to end	Day	17% 7% 3 8% 6% 4 4 3 4 7% 38%	2600
May	1st to 10th	Day	15% 8% 3 6% 4 3 3 3 4 6% 44%	5862
	11th to 20th	Day	11% 6% 2 6% 4 4 4 3 5% 7% 49%	5862
	21st to end	Day	18% 6% 2 6% 4 4 4 3 6% 7% 40%	6434
June	1st to 10th	Day	6% 3 2 5% 5% 4 5% 4 7% 10% 50%	2600
	11th to 20th	Day	7% 4 2 6% 4 4 4 4 6% 8% 50%	2600
	21st to end	Day	6% 3 1 4 4 4 5% 4 5% 9% 54%	2600
July	1st to 10th	Day	8% 6% 2 6% 4 4 5% 4 7% 9% 45%	5900
	11th to 20th	Day	9% 4 2 5% 4 4 4 4 7% 10% 48%	5900
	21st to end	Day	7% 5% 2 6% 4 5% 6% 5% 7% 10% 43%	6422
August	1st to 10th	Day	6% 4 2 5% 4 4 4 4 6% 8% 54%	4234
	11th to 20th	Day	10% 5% 2 6% 5% 4 4 4 5% 7% 48%	4171
	21st to end	Day	5% 4 2 4 3 4 4 3 6% 7% 57%	4487
September	1st to 10th	Day	13% 5% 1 4 3 3 3 3 5% 7% 53%	2315
	11th to 20th	Day	9% 5% 2 5% 4 4 4 3 6% 7% 50%	2200
	21st to end	Day	9% 5% 2 5% 3 4 4 4 5% 7% 53%	2200
October	1st to 10th	Day	9% 4 2 6% 3 4 4 3 5% 6% 54%	2043
	11th to 20th	Day	10% 6% 1 4 3 3 3 2 5% 5% 59%	2000
	21st to end	Day	16% 6% 2 5% 3 3 3 1 4 6% 51%	2200
November	1st to 10th	Day	8% 5% 3 5% 3 3 3 3 4 6% 57%	1918
	11th to 20th	Day	11% 6% 1 4 3 3 3 2 4 6% 56%	1800
	21st to end	Day	14% 8% 2 5% 3 3 2 2 4 5% 53%	1725
December	1st to 10th	Day	6% 5% 2 5% 3 3 3 3 4 7% 58%	2610
	11th to 20th	Day	9% 6% 3 6% 5% 4 3 2 4 5% 53%	3187
	21st to end	Day	17% 14% 8% 11% 4 3 4 2 4 5% 28%	4488
January	1st to 10th	Night	12% 9% 3 11% 6% 4 4 3 4 6% 38%	5888
	11th to 20th	Night	7% 6% 3 8% 5% 6% 5% 3 4 6% 47%	5900
	21st to end	Night	12% 9% 3 8% 4 3 3 2 4 6% 46%	6490
February	1st to 10th	Night	10% 11% 3 6% 5% 4 5% 3 5% 5% 42%	2600
	11th to 20th	Night	12% 8% 3 6% 4 4 4 3 6% 5% 45%	2483
	21st to end	Night	11% 6% 2 5% 4 4 4 4 5% 5% 50%	1959
March	1st to 10th	Night	12% 7% 3 4 3 2 3 2 4 5% 56%	4919
	11th to 20th	Night	7% 4 1 3 3 3 3 4 6% 7% 59%	4980
	21st to end	Night	13% 7% 3 6% 4 5% 4 4 6% 7% 43%	5467
April	1st to 10th	Night	10% 5% 2 6% 4 3 4 3 4 6% 51%	2150
	11th to 20th	Night	13% 7% 4 5% 4 3 3 3 4 6% 49%	1956
	21st to end	Night	15% 7% 2 5% 4 4 4 3 6% 8% 42%	1800
May	1st to 10th	Night	15% 8% 2 5% 3 3 4 4 5% 7% 44%	4053
	11th to 20th	Night	14% 6% 2 5% 3 2 3 3 4 6% 52%	4053
	21st to end	Night	18% 4 2 4 3 3 3 3 4 6% 50%	4443
June	1st to 10th	Night	5% 3 1 4 3 4 4 4 6% 11% 53%	1800
	11th to 20th	Night	5% 3 1 5% 4 4 5% 4 7% 10% 52%	1800
	21st to end	Night	5% 3 1 3 3 3 4 4 6% 9% 59%	1800
July	1st to 10th	Night	7% 5% 2 5% 3 3 4 3 6% 8% 52%	4078
	11th to 20th	Night	4 4 2 5% 4 4 4 4 6% 10% 54%	4077
	21st to end	Night	7% 5% 2 7% 4 5% 5% 4 7% 10% 45%	4449
August	1st to 10th	Night	3 2 1 4 3 4 4 4 7% 9% 58%	2926
	11th to 20th	Night	8% 4 2 5% 4 4 4 4 6% 8% 51%	2888
	21st to end	Night	4 3 1 5% 3 3 4 3 4 7% 63%	3416
September	1st to 10th	Night	11% 5% 2 4 3 3 3 3 4 6% 57%	2080
	11th to 20th	Night	9% 5% 2 5% 4 3 4 3 5% 8% 53%	2200
	21st to end	Night	5% 5% 2 5% 3 4 4 3 5% 6% 58%	2200
October	1st to 10th	Night	9% 4 2 5% 4 4 3 3 5% 6% 56%	2336
	11th to 20th	Night	11% 4 2 5% 2 3 2 3 4 6% 59%	2400
	21st to end	Night	15% 6% 2 4 3 3 3 3 4 5% 52%	2640
November	1st to 10th	Night	9% 5% 2 4 2 2 2 2 4 5% 62%	2420
	11th to 20th	Night	9% 6% 2 4 3 3 3 3 5% 6% 56%	2600
	21st to end	Night	12% 7% 2 4 3 2 2 3 4 5% 55%	2667
December	1st to 10th	Night	5% 5% 2 4 3 3 4 3 5% 6% 60%	4580
	11th to 20th	Night	10% 7% 3 5% 3 4 4 3 6% 7% 49%	4997
	21st to end	Night	18% 12% 5% 9% 5% 4 3 3 4 4 34%	6490

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	46% 4 10% 25% 13% 2	4078
	11th to 20th	Day	45% 3 11% 21% 17% 3	4080
	21st to end	Day	44% 4 10% 21% 17% 5%	4488
February	1st to 10th	Day	47% 4 10% 26% 10% 3	1800
	11th to 20th	Day	44% 3 11% 24% 14% 3	1831
	21st to end	Day	37% 4 10% 25% 18% 6%	1670
March	1st to 10th	Day	34% 3 8% 21% 24% 11%	4936
	11th to 20th	Day	28% 3 9% 22% 27% 11%	4980
	21st to end	Day	45% 4 13% 30% 7% 1	5464
April	1st to 10th	Day	37% 4 11% 25% 19% 4	2250
	11th to 20th	Day	41% 5% 11% 24% 18% 2	2388
	21st to end	Day	47% 5% 11% 25% 11% 1	2600
May	1st to 10th	Day	42% 5% 9% 22% 19% 1	5900
	11th to 20th	Day	34% 5% 10% 23% 23% 4	5866
	21st to end	Day	43% 6% 11% 25% 14% 1	6447
June	1st to 10th	Day	27% 8% 18% 29% 18% 2	2600
	11th to 20th	Day	32% 7% 12% 28% 19% 3	2600
	21st to end	Day	26% 5% 16% 30% 18% 4	2600
July	1st to 10th	Day	34% 5% 11% 26% 21% 3	5836
	11th to 20th	Day	32% 5% 12% 31% 18% 2	5831
	21st to end	Day	33% 6% 15% 32% 13% 1	6240
August	1st to 10th	Day	28% 5% 12% 27% 22% 6%	4220
	11th to 20th	Day	36% 5% 15% 27% 16% 2	4210
	21st to end	Day	26% 5% 14% 33% 18% 5%	4486
September	1st to 10th	Day	31% 4 13% 26% 19% 7%	2315
	11th to 20th	Day	32% 6% 9% 29% 22% 3	2200
	21st to end	Day	31% 5% 8% 26% 26% 4	2200
October	1st to 10th	Day	21% 4 7% 20% 40% 9%	3329
	11th to 20th	Day	18% 3 5% 31% 33% 11%	3240
	21st to end	Day	30% 2 9% 26% 27% 5%	3538
November	1st to 10th	Day	29% 4 11% 30% 20% 6%	1918
	11th to 20th	Day	31% 3 10% 27% 24% 5%	1800
	21st to end	Day	35% 2 10% 29% 22% 2	1725
December	1st to 10th	Day	27% 3 10% 41% 18% 1	2610
	11th to 20th	Day	36% 3 8% 35% 16% 1	3185
	21st to end	Day	59% 4 8% 20% 7% 1	4488
January	1st to 10th	Night	47% 4 11% 24% 13% 1	5888
	11th to 20th	Night	39% 3 10% 24% 20% 4	5900
	21st to end	Night	42% 3 10% 21% 18% 7%	6490
February	1st to 10th	Night	44% 4 11% 23% 14% 4	2600
	11th to 20th	Night	41% 4 11% 24% 16% 3	2484
	21st to end	Night	36% 4 7% 24% 21% 8%	1959
March	1st to 10th	Night	33% 2 6% 25% 27% 6%	4919
	11th to 20th	Night	24% 4 7% 20% 34% 10%	4980
	21st to end	Night	39% 5% 15% 27% 11% 2	5467
April	1st to 10th	Night	34% 4 11% 22% 23% 5%	2150
	11th to 20th	Night	37% 3 10% 25% 20% 4	1956
	21st to end	Night	40% 6% 13% 24% 15% 3	1800
May	1st to 10th	Night	39% 6% 11% 24% 17% 2	4080
	11th to 20th	Night	34% 4 11% 25% 19% 7%	4054
	21st to end	Night	36% 5% 12% 27% 19% 2	4452
June	1st to 10th	Night	23% 9% 19% 30% 16% 3	1800
	11th to 20th	Night	26% 6% 16% 31% 18% 3	1800
	21st to end	Night	21% 7% 13% 33% 22% 4	1800
July	1st to 10th	Night	30% 5% 14% 25% 22% 4	4035
	11th to 20th	Night	26% 5% 13% 33% 21% 2	4026
	21st to end	Night	33% 4 15% 35% 12% 1	4320
August	1st to 10th	Night	22% 5% 17% 27% 20% 8%	2916
	11th to 20th	Night	31% 5% 15% 27% 19% 2	2915
	21st to end	Night	22% 4 14% 38% 18% 4	3416
September	1st to 10th	Night	29% 4 11% 27% 21% 8%	2080
	11th to 20th	Night	30% 5% 11% 27% 23% 4	2200
	21st to end	Night	27% 4 9% 24% 31% 5%	2200
October	1st to 10th	Night	20% 4 6% 17% 46% 8%	3817
	11th to 20th	Night	21% 2 5% 27% 32% 13%	3899
	21st to end	Night	30% 3 7% 27% 29% 4	4252
November	1st to 10th	Night	26% 3 10% 29% 25% 6%	2420
	11th to 20th	Night	29% 4 9% 28% 25% 5%	2600
	21st to end	Night	33% 3 10% 30% 20% 4	2667
December	1st to 10th	Night	26% 4 14% 35% 21% 1	4580
	11th to 20th	Night	35% 3 11% 29% 19% 3	4998
	21st to end	Night	54% 3 8% 24% 9% 2	6490

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	21% 13% 33% 23% 9%	300
	11th to 20th	Day	20% 13% 44% 19% 3	300
	21st to end	Day	11% 11% 49% 25% 4	330
February	1st to 10th	Day	21% 19% 35% 22% 1 1	300
	11th to 20th	Day	19% 14% 44% 17% 6%	300
	21st to end	Day	13% 22% 43% 18% 4	249
March	1st to 10th	Day	15% 17% 41% 23% 3	300
	11th to 20th	Day	22% 16% 34% 21% 6%	300
	21st to end	Day	24% 19% 39% 15% 2 1	330
April	1st to 10th	Day	21% 19% 34% 19% 7%	350
	11th to 20th	Day	19% 16% 39% 21% 5% 1	506
	21st to end	Day	21% 15% 36% 20% 8% 1	700
May	1st to 10th	Day	16% 15% 34% 25% 8% 1	703
	11th to 20th	Day	18% 11% 27% 27% 13% 3	725
	21st to end	Day	16% 11% 29% 24% 16% 4	789
June	1st to 10th	Day	5% 4 22% 36% 26% 7%	730
	11th to 20th	Day	8% 3 29% 37% 18% 4	730
	21st to end	Day	5% 5% 33% 40% 16% 1	730
July	1st to 10th	Day	8% 3 16% 34% 28% 11%	721
	11th to 20th	Day	6% 2 17% 40% 28% 8%	718
	21st to end	Day	7% 3 15% 38% 28% 9%	794
August	1st to 10th	Day	8% 3 17% 38% 29% 5%	726
	11th to 20th	Day	7% 3 15% 39% 31% 6%	715
	21st to end	Day	9% 2 13% 32% 34% 10%	693
September	1st to 10th	Day	12% 2 13% 39% 29% 5%	445
	11th to 20th	Day	7% 2 18% 39% 28% 6%	330
	21st to end	Day	14% 5% 22% 37% 18% 5%	330
October	1st to 10th	Day	10% 5% 32% 30% 13% 9%	330
	11th to 20th	Day	8% 15% 40% 26% 10% 1	330
	21st to end	Day	23% 14% 36% 20% 5% 2	363
November	1st to 10th	Day	15% 12% 34% 29% 8% 2	306
	11th to 20th	Day	18% 17% 33% 22% 9% 1	300
	21st to end	Day	20% 12% 38% 20% 9%	300
December	1st to 10th	Day	8% 12% 44% 26% 7% 3	300
	11th to 20th	Day	14% 15% 39% 25% 6% 1	300
	21st to end	Day	18% 20% 40% 19% 2	330
January	1st to 10th	Night	12% 13% 39% 31% 6% 1	1000
	11th to 20th	Night	14% 13% 40% 28% 5% 1	1000
	21st to end	Night	13% 12% 42% 28% 5%	1100
February	1st to 10th	Night	18% 13% 41% 26% 2	1000
	11th to 20th	Night	17% 15% 39% 26% 3	929
	21st to end	Night	15% 13% 42% 25% 4	639
March	1st to 10th	Night	14% 12% 43% 26% 5%	600
	11th to 20th	Night	16% 12% 39% 27% 6%	600
	21st to end	Night	22% 13% 38% 23% 4	660
April	1st to 10th	Night	13% 15% 43% 23% 6%	600
	11th to 20th	Night	17% 16% 37% 25% 5%	593
	21st to end	Night	19% 12% 39% 24% 7% 1	600
May	1st to 10th	Night	18% 10% 33% 32% 7% 1	600
	11th to 20th	Night	14% 8% 32% 32% 13%	591
	21st to end	Night	11% 6% 31% 34% 15% 2	650
June	1st to 10th	Night	6% 3 23% 42% 25% 1	600
	11th to 20th	Night	7% 2 29% 43% 18% 1	600
	21st to end	Night	5% 3 34% 45% 13%	600
July	1st to 10th	Night	9% 1 14% 45% 28% 3	585
	11th to 20th	Night	2 2 19% 49% 26% 3	582
	21st to end	Night	8% 2 14% 44% 30% 2	657
August	1st to 10th	Night	4 2 18% 47% 27% 1	597
	11th to 20th	Night	5% 3 15% 46% 30% 2	594
	21st to end	Night	6% 1 14% 43% 33% 2	660
September	1st to 10th	Night	13% 2 19% 44% 20% 3	600
	11th to 20th	Night	10% 3 22% 39% 24% 3	600
	21st to end	Night	9% 4 25% 41% 19% 2	600
October	1st to 10th	Night	11% 4 31% 32% 20% 1	736
	11th to 20th	Night	13% 9% 40% 31% 7%	800
	21st to end	Night	19% 12% 33% 27% 8% 1	880
November	1st to 10th	Night	12% 11% 34% 31% 12%	844
	11th to 20th	Night	12% 15% 37% 30% 6% 1	1000
	21st to end	Night	17% 11% 36% 30% 6%	1000
December	1st to 10th	Night	12% 12% 40% 30% 6% 1	1000
	11th to 20th	Night	17% 11% 39% 28% 4	1000
	21st to end	Night	17% 16% 35% 28% 3	1100

Page generated at 2025-10-31 01:02:40. Version ac07

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