Whispering Pines Camping Estates
Clear Sky Chart
History

This sumarizes the distribution of each different forecast outcome for the Whispering Pines Camping Estates clear sky chart from 2005-11-06 to 2026-02-01.

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	17% 8% 3 7% 5% 5% 5% 4 6% 7% 34%	127769
	Night	18% 8% 3 7% 4 4 4 3 5% 6% 36%	124243
Transparency	Day	47% 6% 12% 21% 12% 2	131327
	Night	46% 6% 12% 21% 13% 2	128772
Seeing	Day	24% 15% 27% 20% 10% 3	16317
	Night	21% 12% 28% 27% 10% 1	25728

By Month

Percentage Cloud Cover NE (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	13% 13% 4 11% 5% 5% 4 4 5% 5% 30%	3677
	11th to 20th	Day	13% 14% 6% 14% 7% 5% 5% 3 4 5% 22%	3810
	21st to end	Day	17% 15% 4 9% 5% 4 4 3 4 5% 31%	4565
February	1st to 10th	Day	16% 11% 4 10% 6% 5% 5% 4 6% 5% 28%	1800
	11th to 20th	Day	14% 11% 4 9% 5% 5% 4 4 5% 7% 32%	1814
	21st to end	Day	19% 10% 3 8% 6% 5% 4 4 4 5% 32%	1650
March	1st to 10th	Day	21% 8% 3 6% 4 4 5% 4 4 5% 36%	4649
	11th to 20th	Day	14% 8% 3 7% 4 4 4 3 5% 6% 41%	4980
	21st to end	Day	16% 9% 2 6% 4 4 5% 4 5% 6% 38%	5684
April	1st to 10th	Day	19% 11% 3 7% 6% 4 4 3 5% 6% 33%	2400
	11th to 20th	Day	18% 10% 2 6% 5% 5% 4 4 4 7% 37%	2374
	21st to end	Day	17% 7% 2 6% 4 5% 3 4 6% 7% 38%	2400
May	1st to 10th	Day	29% 7% 2 6% 4 5% 4 3 5% 7% 27%	6052
	11th to 20th	Day	24% 8% 3 6% 5% 4 4 4 5% 7% 28%	6318
	21st to end	Day	22% 5% 2 5% 4 5% 5% 4 7% 8% 32%	6949
June	1st to 10th	Day	14% 7% 2 6% 6% 5% 5% 4 6% 8% 36%	2800
	11th to 20th	Day	17% 6% 3 6% 5% 5% 5% 5% 6% 8% 35%	2800
	21st to end	Day	14% 5% 2 6% 4 5% 5% 4 7% 9% 39%	2800
July	1st to 10th	Day	9% 6% 3 8% 6% 5% 6% 4 6% 9% 38%	6360
	11th to 20th	Day	11% 7% 3 7% 5% 5% 6% 5% 8% 11% 33%	6360
	21st to end	Day	12% 6% 2 7% 5% 5% 5% 5% 6% 8% 38%	6731
August	1st to 10th	Day	21% 6% 3 7% 5% 5% 5% 4 6% 7% 32%	4234
	11th to 20th	Day	17% 6% 2 7% 4 5% 6% 5% 6% 9% 33%	3996
	21st to end	Day	18% 5% 1 4 4 3 4 3 6% 8% 43%	4312
September	1st to 10th	Day	17% 5% 3 5% 4 4 4 3 5% 7% 43%	2400
	11th to 20th	Day	12% 6% 2 6% 4 4 4 4 4 6% 50%	2400
	21st to end	Day	21% 8% 3 6% 4 4 4 4 6% 5% 36%	2130
October	1st to 10th	Day	19% 6% 2 4 5% 3 4 3 5% 8% 41%	2000
	11th to 20th	Day	18% 7% 3 6% 4 4 5% 4 5% 6% 38%	2000
	21st to end	Day	21% 7% 2 7% 4 4 4 4 5% 7% 36%	2167
November	1st to 10th	Day	14% 8% 3 5% 4 3 4 3 5% 6% 46%	1851
	11th to 20th	Day	15% 11% 3 7% 4 4 4 4 5% 6% 35%	1832
	21st to end	Day	19% 9% 3 6% 5% 4 4 4 6% 6% 33%	1680
December	1st to 10th	Day	18% 11% 3 8% 6% 5% 5% 4 5% 6% 30%	2680
	11th to 20th	Day	23% 12% 3 7% 3 3 3 3 5% 6% 32%	3066
	21st to end	Day	20% 10% 4 11% 5% 6% 5% 4 5% 6% 24%	4048
January	1st to 10th	Night	13% 9% 4 11% 6% 5% 5% 4 6% 7% 32%	6489
	11th to 20th	Night	13% 11% 6% 12% 5% 5% 5% 4 5% 6% 28%	6291
	21st to end	Night	16% 10% 4 10% 6% 4 5% 4 5% 6% 31%	6633
February	1st to 10th	Night	16% 11% 3 7% 5% 5% 5% 4 5% 6% 33%	2601
	11th to 20th	Night	16% 11% 3 8% 6% 5% 6% 4 5% 5% 32%	2470
	21st to end	Night	18% 10% 3 9% 5% 5% 4 4 5% 6% 31%	1980
March	1st to 10th	Night	21% 11% 4 7% 4 3 3 3 4 5% 36%	5190
	11th to 20th	Night	13% 9% 3 5% 3 4 3 3 5% 6% 45%	4979
	21st to end	Night	17% 9% 2 7% 4 4 4 3 4 5% 40%	5246
April	1st to 10th	Night	20% 9% 3 7% 6% 4 5% 4 5% 5% 32%	2000
	11th to 20th	Night	17% 8% 2 6% 5% 4 5% 3 5% 7% 38%	1975
	21st to end	Night	19% 6% 3 6% 4 3 4 3 5% 7% 42%	2000
May	1st to 10th	Night	33% 7% 2 5% 3 3 4 3 5% 7% 28%	3930
	11th to 20th	Night	26% 7% 3 5% 4 4 4 3 5% 6% 33%	3575
	21st to end	Night	24% 5% 2 6% 4 4 4 3 5% 7% 36%	3926
June	1st to 10th	Night	15% 6% 2 6% 5% 4 4 4 5% 8% 42%	1600
	11th to 20th	Night	15% 5% 2 6% 5% 5% 4 4 8% 9% 38%	1600
	21st to end	Night	13% 5% 2 4 4 4 5% 4 7% 9% 43%	1600
July	1st to 10th	Night	12% 7% 3 7% 5% 4 4 4 6% 8% 39%	3600
	11th to 20th	Night	16% 7% 2 7% 5% 4 5% 5% 7% 9% 33%	3600
	21st to end	Night	14% 5% 2 5% 4 4 4 4 6% 7% 44%	4104
August	1st to 10th	Night	21% 7% 2 7% 3 4 5% 4 6% 9% 33%	2915
	11th to 20th	Night	19% 7% 3 6% 3 4 4 3 5% 6% 42%	3006
	21st to end	Night	16% 4 2 4 3 4 4 3 5% 7% 47%	3586
September	1st to 10th	Night	16% 6% 2 5% 4 4 4 3 5% 7% 45%	2000
	11th to 20th	Night	13% 6% 2 4 3 3 4 3 4 7% 51%	2000
	21st to end	Night	20% 6% 2 6% 5% 4 3 3 4 6% 41%	2266
October	1st to 10th	Night	22% 6% 2 5% 3 3 3 3 3 6% 45%	2400
	11th to 20th	Night	17% 8% 2 6% 4 3 5% 3 4 6% 44%	2400
	21st to end	Night	21% 7% 2 6% 4 4 4 3 5% 7% 38%	2671
November	1st to 10th	Night	12% 7% 3 7% 4 3 3 3 6% 7% 46%	2667
	11th to 20th	Night	18% 8% 3 7% 4 4 4 4 5% 6% 36%	2785
	21st to end	Night	16% 10% 3 7% 5% 4 5% 4 6% 7% 34%	2940
December	1st to 10th	Night	17% 11% 4 7% 4 4 4 4 5% 7% 33%	4720
	11th to 20th	Night	24% 9% 3 7% 4 4 4 3 5% 5% 32%	5348
	21st to end	Night	21% 13% 4 7% 5% 4 4 3 4 5% 29%	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	52% 6% 12% 19% 10% 2	3678
	11th to 20th	Day	63% 5% 8% 14% 8% 2	3841
	21st to end	Day	55% 5% 10% 20% 10%	4565
February	1st to 10th	Day	56% 6% 11% 16% 10% 1	1800
	11th to 20th	Day	53% 5% 9% 23% 9% 1	1823
	21st to end	Day	55% 4 10% 22% 8% 2	1650
March	1st to 10th	Day	50% 5% 10% 20% 10% 5%	4652
	11th to 20th	Day	43% 5% 15% 24% 9% 4	4980
	21st to end	Day	46% 5% 11% 16% 19% 3	5684
April	1st to 10th	Day	52% 5% 8% 19% 12% 3	2400
	11th to 20th	Day	47% 5% 12% 20% 14% 2	2374
	21st to end	Day	44% 5% 11% 22% 15% 4	2400
May	1st to 10th	Day	56% 6% 11% 16% 9% 1	6061
	11th to 20th	Day	53% 7% 9% 20% 10% 1	6322
	21st to end	Day	46% 7% 12% 22% 12% 2	6949
June	1st to 10th	Day	44% 8% 12% 21% 13% 2	2800
	11th to 20th	Day	44% 8% 13% 21% 12% 1	2800
	21st to end	Day	39% 8% 13% 26% 13%	2800
July	1st to 10th	Day	42% 8% 12% 24% 13% 1	6290
	11th to 20th	Day	43% 7% 17% 23% 11%	6285
	21st to end	Day	42% 6% 12% 21% 19% 1	6537
August	1st to 10th	Day	51% 7% 13% 19% 10%	4221
	11th to 20th	Day	45% 7% 14% 26% 8%	4035
	21st to end	Day	38% 5% 12% 33% 11% 1	4312
September	1st to 10th	Day	41% 6% 11% 23% 17% 2	2400
	11th to 20th	Day	35% 5% 10% 26% 22% 2	2400
	21st to end	Day	49% 5% 10% 17% 17% 1	2130
October	1st to 10th	Day	40% 5% 9% 23% 19% 5%	3260
	11th to 20th	Day	39% 4 8% 28% 19% 3	3240
	21st to end	Day	33% 4 16% 29% 17% 1	3481
November	1st to 10th	Day	39% 5% 13% 23% 17% 2	1851
	11th to 20th	Day	48% 6% 12% 21% 12% 2	1832
	21st to end	Day	50% 6% 13% 23% 8% 1	1680
December	1st to 10th	Day	55% 5% 12% 22% 6% 1	2680
	11th to 20th	Day	54% 4 15% 18% 9%	3066
	21st to end	Day	60% 6% 12% 13% 8%	4048
January	1st to 10th	Night	49% 8% 12% 18% 12% 2	6489
	11th to 20th	Night	53% 7% 12% 15% 10% 3	6335
	21st to end	Night	53% 5% 9% 16% 14% 2	6633
February	1st to 10th	Night	51% 6% 12% 22% 8% 1	2601
	11th to 20th	Night	52% 5% 11% 18% 11% 2	2472
	21st to end	Night	52% 6% 10% 19% 12% 2	1980
March	1st to 10th	Night	51% 4 11% 19% 11% 4	5200
	11th to 20th	Night	38% 5% 18% 24% 10% 4	4980
	21st to end	Night	47% 4 8% 17% 20% 4	5246
April	1st to 10th	Night	53% 5% 9% 18% 12% 3	2000
	11th to 20th	Night	44% 7% 11% 20% 17% 1	1975
	21st to end	Night	43% 4 11% 21% 17% 3	2000
May	1st to 10th	Night	57% 5% 10% 18% 8% 2	3937
	11th to 20th	Night	51% 9% 12% 15% 12% 1	3576
	21st to end	Night	46% 7% 12% 21% 12% 2	3927
June	1st to 10th	Night	39% 7% 12% 25% 17% 1	1600
	11th to 20th	Night	41% 8% 15% 24% 12% 1	1600
	21st to end	Night	36% 8% 13% 29% 13% 1	1600
July	1st to 10th	Night	43% 7% 12% 22% 15% 1	3560
	11th to 20th	Night	45% 7% 14% 22% 11% 1	3552
	21st to end	Night	36% 6% 13% 22% 21% 1	3984
August	1st to 10th	Night	47% 7% 15% 21% 9% 1	2904
	11th to 20th	Night	42% 6% 12% 26% 13%	3033
	21st to end	Night	36% 5% 10% 33% 14% 1	3586
September	1st to 10th	Night	39% 6% 11% 25% 16% 3	2000
	11th to 20th	Night	33% 6% 11% 28% 21% 2	2000
	21st to end	Night	44% 5% 10% 22% 18% 1	2266
October	1st to 10th	Night	43% 4 10% 22% 21% 1	3920
	11th to 20th	Night	33% 5% 11% 27% 21% 4	3899
	21st to end	Night	33% 4 15% 28% 18% 1	4307
November	1st to 10th	Night	37% 5% 14% 23% 18% 3	2667
	11th to 20th	Night	47% 5% 12% 20% 13% 3	2785
	21st to end	Night	48% 7% 13% 21% 9% 1	2940
December	1st to 10th	Night	49% 5% 14% 26% 5%	4720
	11th to 20th	Night	55% 4 13% 18% 10%	5348
	21st to end	Night	56% 5% 11% 17% 10% 1	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	35% 20% 32% 11% 1 1	220
	11th to 20th	Day	38% 23% 29% 9% 1	258
	21st to end	Day	26% 31% 27% 11% 4	363
February	1st to 10th	Day	32% 26% 30% 10% 2	300
	11th to 20th	Day	35% 24% 33% 7%	361
	21st to end	Day	30% 22% 31% 15% 2	414
March	1st to 10th	Day	32% 21% 28% 16% 3	500
	11th to 20th	Day	27% 25% 28% 16% 3 1	500
	21st to end	Day	30% 24% 26% 13% 4 2	550
April	1st to 10th	Day	33% 20% 28% 13% 5% 1	500
	11th to 20th	Day	32% 23% 24% 13% 8% 2	492
	21st to end	Day	26% 19% 33% 13% 7% 2	500
May	1st to 10th	Day	34% 14% 30% 13% 7% 3	503
	11th to 20th	Day	25% 15% 30% 18% 9% 3	527
	21st to end	Day	24% 10% 26% 21% 14% 5%	573
June	1st to 10th	Day	18% 13% 31% 22% 12% 3	530
	11th to 20th	Day	22% 12% 26% 23% 15% 2	530
	21st to end	Day	16% 10% 32% 28% 13% 2	530
July	1st to 10th	Day	13% 7% 26% 31% 18% 5%	525
	11th to 20th	Day	12% 5% 29% 29% 19% 6%	524
	21st to end	Day	14% 8% 29% 28% 16% 5%	576
August	1st to 10th	Day	16% 7% 21% 26% 21% 8%	526
	11th to 20th	Day	17% 4 23% 29% 18% 8%	519
	21st to end	Day	16% 8% 25% 27% 15% 10%	583
September	1st to 10th	Day	19% 10% 22% 21% 19% 9%	530
	11th to 20th	Day	14% 5% 24% 24% 22% 11%	530
	21st to end	Day	27% 10% 21% 25% 12% 5%	530
October	1st to 10th	Day	23% 11% 21% 23% 17% 5%	530
	11th to 20th	Day	23% 16% 29% 20% 10% 2	530
	21st to end	Day	26% 14% 30% 20% 8% 1	564
November	1st to 10th	Day	23% 16% 29% 22% 10% 1	425
	11th to 20th	Day	27% 20% 29% 18% 6% 1	372
	21st to end	Day	29% 24% 33% 11% 3	220
December	1st to 10th	Day	32% 27% 27% 8% 6%	220
	11th to 20th	Day	36% 19% 29% 13% 3	220
	21st to end	Day	31% 22% 28% 16% 3	242
January	1st to 10th	Night	21% 21% 36% 19% 3	840
	11th to 20th	Night	23% 18% 33% 22% 3	840
	21st to end	Night	19% 20% 38% 21% 2	924
February	1st to 10th	Night	23% 19% 35% 22% 2	801
	11th to 20th	Night	26% 20% 38% 15% 1	783
	21st to end	Night	25% 18% 36% 17% 3	660
March	1st to 10th	Night	25% 19% 33% 20% 3	800
	11th to 20th	Night	25% 18% 31% 21% 5%	800
	21st to end	Night	22% 18% 36% 19% 5%	880
April	1st to 10th	Night	26% 18% 33% 19% 4	800
	11th to 20th	Night	22% 16% 33% 21% 7%	791
	21st to end	Night	22% 13% 31% 28% 6%	800
May	1st to 10th	Night	29% 11% 24% 25% 11%	555
	11th to 20th	Night	21% 8% 29% 35% 7% 1	394
	21st to end	Night	20% 6% 22% 36% 16% 1	433
June	1st to 10th	Night	17% 4 24% 37% 18%	400
	11th to 20th	Night	17% 5% 26% 37% 16%	400
	21st to end	Night	13% 2 25% 46% 13% 1	400
July	1st to 10th	Night	14% 4 19% 40% 22% 2	390
	11th to 20th	Night	10% 3 21% 41% 23% 1	388
	21st to end	Night	13% 3 19% 40% 23% 2	515
August	1st to 10th	Night	16% 1 14% 42% 26% 2	597
	11th to 20th	Night	15% 2 12% 38% 30% 2	673
	21st to end	Night	16% 4 17% 34% 28% 1	880
September	1st to 10th	Night	19% 5% 20% 34% 21% 2	800
	11th to 20th	Night	16% 4 19% 31% 27% 4	800
	21st to end	Night	23% 7% 19% 33% 17% 2	800
October	1st to 10th	Night	25% 7% 19% 27% 20% 2	800
	11th to 20th	Night	22% 10% 27% 32% 9% 1	800
	21st to end	Night	24% 12% 28% 30% 6%	880
November	1st to 10th	Night	16% 12% 32% 30% 9% 1	820
	11th to 20th	Night	23% 17% 27% 26% 6% 1	840
	21st to end	Night	24% 16% 30% 25% 5% 1	840
December	1st to 10th	Night	26% 17% 33% 19% 5%	840
	11th to 20th	Night	25% 17% 31% 24% 4	840
	21st to end	Night	26% 14% 33% 23% 4	924

Page generated at 2026-01-29 01:21:45. Version ac07

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