Deer Creek RV Golf Resort
Clear Sky Chart
History

This sumarizes the distribution of each different forecast outcome for the Deer Creek RV Golf Resort 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	7% 5% 2 7% 6% 6% 6% 5% 7% 10% 39%	127267
	Night	8% 6% 2 7% 5% 5% 5% 4 7% 9% 43%	124745
Transparency	Day	39% 7% 15% 20% 14% 5%	130989
	Night	38% 6% 16% 21% 14% 5%	129092
Seeing	Day	9% 5% 18% 25% 24% 19%	17246
	Night	9% 4 18% 33% 27% 8%	27358

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	7% 5% 2 6% 4 4 4 3 6% 7% 52%	4146
	11th to 20th	Day	19% 9% 3 8% 5% 4 5% 3 5% 7% 31%	4150
	21st to end	Day	14% 6% 2 5% 3 3 3 3 7% 8% 45%	4735
February	1st to 10th	Day	11% 6% 3 6% 4 4 4 4 6% 8% 44%	2000
	11th to 20th	Day	7% 4 2 5% 4 5% 5% 3 6% 7% 52%	1948
	21st to end	Day	9% 5% 2 5% 5% 5% 4 4 5% 7% 48%	1765
March	1st to 10th	Day	7% 6% 3 7% 5% 4 5% 4 5% 8% 46%	4935
	11th to 20th	Day	4 3 2 4 3 3 3 3 5% 9% 60%	4980
	21st to end	Day	8% 5% 2 6% 4 4 5% 4 6% 8% 48%	5465
April	1st to 10th	Day	5% 4 2 5% 5% 5% 6% 5% 6% 8% 49%	2200
	11th to 20th	Day	7% 6% 2 7% 5% 5% 5% 4 6% 8% 45%	2206
	21st to end	Day	5% 3 1 5% 5% 5% 6% 5% 8% 8% 49%	2400
May	1st to 10th	Day	3 3 2 6% 5% 6% 6% 6% 7% 10% 47%	5721
	11th to 20th	Day	8% 5% 2 6% 4 5% 5% 5% 6% 8% 45%	5861
	21st to end	Day	5% 4 2 5% 5% 6% 6% 5% 8% 11% 43%	6433
June	1st to 10th	Day	12% 9% 4 10% 7% 7% 7% 5% 7% 9% 23%	2600
	11th to 20th	Day	6% 7% 3 10% 8% 8% 8% 6% 8% 11% 25%	2600
	21st to end	Day	8% 7% 3 10% 8% 9% 8% 7% 8% 9% 25%	2600
July	1st to 10th	Day	7% 6% 3 10% 8% 9% 9% 7% 9% 13% 19%	5900
	11th to 20th	Day	4 5% 3 8% 8% 7% 8% 6% 10% 13% 28%	5900
	21st to end	Day	5% 5% 2 8% 7% 7% 8% 6% 9% 13% 30%	6424
August	1st to 10th	Day	6% 7% 3 9% 8% 8% 8% 7% 9% 12% 24%	4234
	11th to 20th	Day	4 5% 2 8% 6% 7% 7% 7% 9% 13% 32%	3930
	21st to end	Day	7% 6% 3 11% 8% 8% 8% 6% 8% 12% 23%	3949
September	1st to 10th	Day	7% 7% 4 12% 9% 8% 8% 6% 9% 10% 21%	2200
	11th to 20th	Day	9% 8% 4 10% 9% 7% 8% 6% 8% 8% 22%	2200
	21st to end	Day	9% 7% 3 10% 8% 7% 7% 6% 8% 9% 27%	2200
October	1st to 10th	Day	11% 7% 3 8% 7% 6% 7% 5% 7% 9% 31%	2180
	11th to 20th	Day	6% 5% 2 5% 4 6% 5% 4 6% 9% 48%	2000
	21st to end	Day	7% 4 2 5% 4 5% 6% 4 6% 9% 48%	2200
November	1st to 10th	Day	7% 5% 1 6% 4 5% 6% 4 6% 9% 46%	2057
	11th to 20th	Day	8% 6% 2 6% 5% 4 5% 4 6% 7% 47%	2100
	21st to end	Day	8% 7% 2 7% 5% 4 5% 4 6% 8% 44%	2000
December	1st to 10th	Day	5% 4 2 5% 4 3 4 4 5% 8% 56%	3020
	11th to 20th	Day	9% 6% 2 7% 5% 5% 5% 5% 6% 8% 42%	3463
	21st to end	Day	10% 6% 2 8% 5% 6% 5% 4 7% 7% 38%	4565
January	1st to 10th	Night	7% 6% 2 6% 4 4 4 3 5% 7% 52%	6019
	11th to 20th	Night	19% 9% 3 8% 5% 4 5% 3 6% 7% 31%	6030
	21st to end	Night	15% 6% 2 6% 4 4 4 3 6% 8% 42%	6445
February	1st to 10th	Night	10% 7% 2 6% 4 4 3 4 6% 8% 46%	2401
	11th to 20th	Night	10% 6% 2 4 4 4 4 3 5% 6% 51%	2338
	21st to end	Night	7% 5% 2 6% 5% 4 3 4 6% 7% 52%	1863
March	1st to 10th	Night	12% 7% 3 7% 5% 4 4 3 5% 7% 45%	4918
	11th to 20th	Night	5% 3 1 4 3 3 3 3 7% 10% 57%	4980
	21st to end	Night	8% 6% 2 6% 4 4 4 3 6% 7% 51%	5467
April	1st to 10th	Night	5% 4 1 5% 4 4 4 4 6% 9% 53%	2200
	11th to 20th	Night	6% 4 2 6% 5% 4 4 4 6% 9% 51%	2141
	21st to end	Night	5% 4 1 4 4 4 4 4 6% 9% 56%	2000
May	1st to 10th	Night	4 4 2 6% 5% 5% 6% 4 7% 9% 49%	4201
	11th to 20th	Night	8% 5% 2 5% 4 4 4 4 6% 9% 50%	4032
	21st to end	Night	4 3 2 5% 3 4 5% 5% 8% 10% 51%	4421
June	1st to 10th	Night	10% 8% 3 9% 5% 5% 6% 5% 7% 9% 35%	1800
	11th to 20th	Night	6% 8% 2 7% 7% 7% 7% 4 8% 12% 33%	1800
	21st to end	Night	7% 6% 4 9% 6% 7% 7% 7% 9% 10% 30%	1800
July	1st to 10th	Night	9% 9% 4 10% 7% 7% 8% 6% 9% 10% 21%	4058
	11th to 20th	Night	5% 6% 3 9% 7% 7% 8% 7% 9% 13% 26%	4057
	21st to end	Night	5% 6% 3 11% 8% 7% 7% 6% 9% 11% 27%	4427
August	1st to 10th	Night	4 5% 3 10% 6% 7% 6% 5% 8% 12% 34%	2915
	11th to 20th	Night	4 5% 3 7% 5% 6% 6% 5% 9% 12% 37%	3064
	21st to end	Night	8% 6% 3 8% 6% 6% 7% 6% 9% 13% 29%	3949
September	1st to 10th	Night	9% 7% 4 9% 6% 7% 7% 5% 8% 11% 27%	2200
	11th to 20th	Night	11% 8% 3 9% 6% 6% 7% 5% 7% 9% 28%	2200
	21st to end	Night	10% 8% 3 9% 6% 6% 5% 4 7% 9% 35%	2200
October	1st to 10th	Night	10% 6% 2 8% 5% 6% 5% 4 7% 9% 38%	2218
	11th to 20th	Night	6% 5% 2 6% 4 5% 6% 4 6% 8% 50%	2400
	21st to end	Night	8% 5% 2 5% 5% 4 4 4 6% 8% 51%	2640
November	1st to 10th	Night	9% 5% 2 5% 4 5% 4 3 6% 6% 51%	2461
	11th to 20th	Night	8% 6% 2 6% 5% 4 4 3 5% 7% 49%	2520
	21st to end	Night	9% 5% 2 7% 5% 4 4 4 6% 9% 47%	2615
December	1st to 10th	Night	5% 3 1 4 4 3 4 4 5% 8% 60%	4380
	11th to 20th	Night	10% 8% 3 6% 4 4 4 4 5% 7% 47%	4952
	21st to end	Night	12% 8% 3 8% 5% 5% 5% 4 6% 7% 38%	6633

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	31% 2 7% 19% 28% 12%	4147
	11th to 20th	Day	53% 3 5% 17% 16% 7%	4150
	21st to end	Day	37% 2 7% 28% 19% 6%	4735
February	1st to 10th	Day	37% 4 9% 18% 21% 11%	2000
	11th to 20th	Day	31% 4 7% 22% 25% 11%	1958
	21st to end	Day	36% 2 10% 18% 24% 10%	1765
March	1st to 10th	Day	38% 2 12% 18% 22% 8%	4935
	11th to 20th	Day	23% 2 9% 25% 22% 19%	4980
	21st to end	Day	34% 3 7% 29% 18% 8%	5465
April	1st to 10th	Day	33% 4 12% 24% 20% 8%	2200
	11th to 20th	Day	36% 4 10% 19% 22% 9%	2206
	21st to end	Day	31% 3 10% 22% 25% 8%	2400
May	1st to 10th	Day	30% 6% 17% 28% 15% 4	5754
	11th to 20th	Day	36% 3 16% 30% 14% 1	5865
	21st to end	Day	32% 6% 16% 30% 14% 2	6447
June	1st to 10th	Day	56% 5% 16% 17% 5%	2600
	11th to 20th	Day	50% 8% 20% 18% 3	2600
	21st to end	Day	53% 7% 23% 14% 3 1	2600
July	1st to 10th	Day	49% 16% 27% 8% 1	5835
	11th to 20th	Day	41% 15% 32% 11%	5831
	21st to end	Day	40% 14% 25% 21% 1	6240
August	1st to 10th	Day	47% 11% 29% 10% 2	4221
	11th to 20th	Day	39% 13% 26% 16% 6%	3969
	21st to end	Day	50% 14% 23% 12% 1	3949
September	1st to 10th	Day	54% 11% 20% 12% 4	2200
	11th to 20th	Day	54% 8% 20% 13% 5%	2200
	21st to end	Day	50% 8% 16% 15% 9% 2	2200
October	1st to 10th	Day	58% 9% 13% 10% 7% 4	3557
	11th to 20th	Day	26% 4 8% 24% 32% 5%	3240
	21st to end	Day	28% 4 7% 23% 30% 7%	3538
November	1st to 10th	Day	34% 5% 10% 21% 21% 10%	2057
	11th to 20th	Day	36% 3 7% 23% 22% 9%	2100
	21st to end	Day	37% 4 8% 23% 19% 9%	2000
December	1st to 10th	Day	26% 4 13% 30% 18% 9%	3020
	11th to 20th	Day	38% 5% 11% 18% 20% 8%	3460
	21st to end	Day	43% 4 10% 22% 16% 4	4565
January	1st to 10th	Night	33% 1 7% 22% 25% 11%	6019
	11th to 20th	Night	53% 4 8% 17% 13% 5%	6030
	21st to end	Night	41% 2 9% 24% 16% 8%	6445
February	1st to 10th	Night	36% 3 10% 18% 21% 10%	2401
	11th to 20th	Night	34% 3 10% 21% 22% 9%	2339
	21st to end	Night	31% 3 12% 20% 25% 8%	1863
March	1st to 10th	Night	40% 2 10% 20% 19% 8%	4918
	11th to 20th	Night	24% 2 16% 24% 17% 17%	4980
	21st to end	Night	33% 3 10% 27% 22% 5%	5467
April	1st to 10th	Night	27% 4 18% 27% 17% 8%	2200
	11th to 20th	Night	30% 4 13% 24% 22% 7%	2141
	21st to end	Night	26% 2 15% 26% 24% 7%	2000
May	1st to 10th	Night	31% 6% 18% 28% 13% 4	4230
	11th to 20th	Night	32% 4 19% 32% 13% 1	4033
	21st to end	Night	27% 7% 19% 33% 13% 1	4429
June	1st to 10th	Night	46% 6% 21% 22% 5%	1800
	11th to 20th	Night	44% 9% 24% 22% 3	1800
	21st to end	Night	46% 12% 22% 16% 4	1800
July	1st to 10th	Night	52% 15% 25% 7% 1	4015
	11th to 20th	Night	44% 18% 31% 8%	4006
	21st to end	Night	45% 14% 23% 18%	4297
August	1st to 10th	Night	41% 12% 34% 12% 2	2904
	11th to 20th	Night	36% 12% 29% 17% 5%	3091
	21st to end	Night	42% 15% 29% 12% 2	3949
September	1st to 10th	Night	48% 15% 22% 13% 3	2200
	11th to 20th	Night	51% 10% 20% 17% 2	2200
	21st to end	Night	46% 6% 19% 18% 9% 2	2200
October	1st to 10th	Night	58% 8% 11% 13% 7% 4	3621
	11th to 20th	Night	29% 5% 9% 28% 23% 5%	3899
	21st to end	Night	29% 4 8% 23% 29% 6%	4252
November	1st to 10th	Night	34% 4 11% 21% 21% 10%	2461
	11th to 20th	Night	35% 4 8% 22% 22% 9%	2520
	21st to end	Night	35% 3 9% 24% 20% 8%	2615
December	1st to 10th	Night	23% 4 17% 31% 13% 12%	4380
	11th to 20th	Night	35% 6% 12% 22% 15% 10%	4954
	21st to end	Night	45% 5% 12% 20% 14% 5%	6633

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	10% 12% 43% 26% 8% 2	330
	11th to 20th	Day	8% 13% 38% 28% 10% 2	330
	21st to end	Day	17% 13% 40% 21% 7%	363
February	1st to 10th	Day	8% 14% 30% 28% 17% 3	300
	11th to 20th	Day	10% 8% 36% 29% 12% 5%	300
	21st to end	Day	9% 7% 30% 32% 21%	364
March	1st to 10th	Day	8% 10% 34% 33% 15% 1	500
	11th to 20th	Day	10% 9% 27% 31% 20% 3	500
	21st to end	Day	8% 7% 28% 31% 23% 3	550
April	1st to 10th	Day	7% 9% 29% 34% 17% 4	500
	11th to 20th	Day	9% 8% 25% 33% 18% 8%	492
	21st to end	Day	7% 4 21% 31% 28% 10%	500
May	1st to 10th	Day	5% 4 20% 31% 26% 14%	503
	11th to 20th	Day	9% 3 16% 28% 28% 16%	527
	21st to end	Day	7% 3 8% 21% 36% 25%	573
June	1st to 10th	Day	15% 3 9% 22% 27% 23%	530
	11th to 20th	Day	7% 4 10% 18% 30% 31%	530
	21st to end	Day	7% 2 4 15% 29% 43%	530
July	1st to 10th	Day	6% 2 4 10% 26% 52%	525
	11th to 20th	Day	5% 2 3 11% 29% 50%	524
	21st to end	Day	8% 2 3 14% 28% 46%	576
August	1st to 10th	Day	6% 2 6% 15% 29% 43%	526
	11th to 20th	Day	5% 2 2 13% 28% 50%	519
	21st to end	Day	10% 3 5% 17% 28% 37%	583
September	1st to 10th	Day	8% 4 8% 16% 26% 39%	530
	11th to 20th	Day	10% 5% 8% 21% 27% 29%	530
	21st to end	Day	10% 2 8% 22% 32% 26%	530
October	1st to 10th	Day	15% 4 16% 30% 27% 9%	530
	11th to 20th	Day	7% 5% 17% 31% 32% 9%	530
	21st to end	Day	7% 4 22% 35% 25% 6%	583
November	1st to 10th	Day	8% 7% 19% 33% 26% 7%	535
	11th to 20th	Day	12% 5% 22% 35% 21% 5%	540
	21st to end	Day	10% 5% 27% 33% 21% 3	440
December	1st to 10th	Day	8% 10% 34% 30% 15% 4	330
	11th to 20th	Day	12% 8% 30% 35% 13% 2	330
	21st to end	Day	8% 9% 30% 33% 17% 3	363
January	1st to 10th	Night	11% 8% 30% 37% 13%	840
	11th to 20th	Night	11% 8% 27% 41% 12% 1	840
	21st to end	Night	13% 8% 36% 32% 10%	924
February	1st to 10th	Night	14% 5% 26% 38% 15%	801
	11th to 20th	Night	11% 7% 29% 41% 11% 2	783
	21st to end	Night	10% 4 35% 41% 9%	660
March	1st to 10th	Night	8% 8% 34% 40% 10% 1	800
	11th to 20th	Night	9% 7% 30% 39% 15% 1	800
	21st to end	Night	8% 7% 26% 43% 16% 1	880
April	1st to 10th	Night	6% 5% 29% 45% 14%	800
	11th to 20th	Night	7% 6% 28% 42% 16% 1	791
	21st to end	Night	6% 5% 25% 43% 21% 1	800
May	1st to 10th	Night	4 3 18% 47% 25% 2	679
	11th to 20th	Night	9% 1 13% 40% 32% 4	591
	21st to end	Night	7% 2 7% 36% 42% 6%	650
June	1st to 10th	Night	10% 2 6% 30% 41% 10%	600
	11th to 20th	Night	7% 3 4 20% 44% 23%	600
	21st to end	Night	8% 1 4 16% 48% 23%	600
July	1st to 10th	Night	9% 2 2 12% 44% 30%	585
	11th to 20th	Night	8% 2 1 8% 45% 36%	582
	21st to end	Night	5% 2 1 12% 50% 30%	657
August	1st to 10th	Night	5% 2 2 11% 51% 29%	597
	11th to 20th	Night	5% 1 2 10% 46% 36%	634
	21st to end	Night	12% 3 4 20% 39% 22%	880
September	1st to 10th	Night	11% 4 6% 19% 39% 21%	800
	11th to 20th	Night	13% 4 6% 24% 41% 11%	800
	21st to end	Night	13% 4 6% 29% 39% 10%	800
October	1st to 10th	Night	13% 3 14% 36% 29% 5%	800
	11th to 20th	Night	7% 3 16% 36% 36% 4	800
	21st to end	Night	10% 3 21% 38% 26% 3	880
November	1st to 10th	Night	11% 3 22% 38% 24% 3	820
	11th to 20th	Night	10% 4 20% 42% 21% 2	840
	21st to end	Night	10% 4 25% 41% 19% 1	840
December	1st to 10th	Night	8% 5% 25% 40% 21% 1	840
	11th to 20th	Night	11% 7% 24% 38% 18% 1	840
	21st to end	Night	11% 5% 26% 40% 17% 2	924

Page generated at 2026-01-29 01:21:46. Version ac07

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