Indian Lakes RV Campground
Clear Sky Chart
History

This sumarizes the distribution of each different forecast outcome for the Indian Lakes RV Campground clear sky chart from 2005-11-06 to 2026-05-02.

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% 9% 3 8% 5% 5% 5% 4 6% 7% 36%	131508
	Night	14% 10% 4 8% 5% 4 4 3 5% 7% 37%	131113
Transparency	Day	45% 6% 11% 22% 14% 2	135137
	Night	45% 6% 11% 22% 15% 2	135544
Seeing	Day	18% 14% 28% 22% 13% 5%	17379
	Night	18% 11% 28% 27% 14% 2	27229

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% 13% 6% 11% 6% 5% 4 3 5% 7% 24%	4691
	11th to 20th	Day	11% 12% 5% 16% 7% 6% 5% 3 4 4 27%	4782
	21st to end	Day	18% 13% 6% 11% 6% 6% 5% 4 5% 4 22%	5780
February	1st to 10th	Day	17% 14% 6% 8% 5% 3 3 4 4 5% 30%	2048
	11th to 20th	Day	15% 13% 4 10% 5% 4 5% 3 5% 6% 32%	2048
	21st to end	Day	17% 13% 4 10% 4 3 3 3 5% 5% 33%	1730
March	1st to 10th	Day	18% 14% 6% 9% 4 3 4 2 4 4 32%	4580
	11th to 20th	Day	12% 10% 3 6% 4 5% 4 4 5% 7% 40%	5040
	21st to end	Day	16% 10% 3 7% 5% 5% 5% 4 5% 7% 33%	5625
April	1st to 10th	Day	15% 10% 3 9% 4 5% 4 4 6% 7% 34%	2520
	11th to 20th	Day	15% 9% 3 8% 5% 4 4 3 5% 6% 39%	2513
	21st to end	Day	17% 8% 3 7% 4 5% 5% 4 6% 7% 35%	2730
May	1st to 10th	Day	19% 10% 3 8% 5% 5% 5% 4 6% 8% 28%	5875
	11th to 20th	Day	20% 9% 3 7% 4 4 4 3 5% 7% 35%	5861
	21st to end	Day	13% 6% 3 8% 5% 5% 6% 5% 7% 10% 32%	6433
June	1st to 10th	Day	12% 6% 2 6% 5% 5% 5% 4 6% 7% 42%	2695
	11th to 20th	Day	9% 6% 2 7% 4 5% 5% 4 6% 8% 44%	2800
	21st to end	Day	9% 7% 2 7% 5% 4 5% 4 7% 10% 41%	2800
July	1st to 10th	Day	10% 6% 2 6% 4 5% 5% 4 6% 10% 41%	6360
	11th to 20th	Day	8% 6% 2 7% 6% 5% 6% 5% 8% 10% 37%	6342
	21st to end	Day	10% 8% 3 8% 7% 6% 7% 6% 8% 8% 31%	6424
August	1st to 10th	Day	7% 5% 2 6% 4 4 4 4 7% 11% 45%	4234
	11th to 20th	Day	8% 6% 2 6% 4 5% 6% 4 7% 11% 40%	4110
	21st to end	Day	5% 4 2 5% 4 4 4 3 5% 9% 54%	4312
September	1st to 10th	Day	12% 5% 2 5% 5% 4 5% 4 5% 6% 47%	2310
	11th to 20th	Day	9% 5% 2 5% 4 5% 5% 4 6% 8% 48%	2200
	21st to end	Day	14% 6% 2 6% 4 4 4 3 4 6% 48%	2200
October	1st to 10th	Day	10% 5% 2 7% 4 4 4 3 4 6% 50%	2200
	11th to 20th	Day	11% 7% 2 6% 3 3 4 4 5% 6% 47%	2068
	21st to end	Day	18% 10% 3 6% 4 3 3 3 5% 6% 38%	1995
November	1st to 10th	Day	9% 7% 2 6% 4 4 3 2 4 6% 52%	1852
	11th to 20th	Day	14% 11% 4 8% 4 4 4 4 6% 6% 37%	1890
	21st to end	Day	18% 10% 3 8% 6% 4 3 2 4 6% 35%	1890
December	1st to 10th	Day	16% 11% 3 7% 5% 4 3 2 3 5% 40%	3020
	11th to 20th	Day	16% 13% 6% 11% 6% 5% 4 3 5% 4 27%	3463
	21st to end	Day	21% 20% 6% 10% 4 5% 4 3 4 5% 18%	4087
January	1st to 10th	Night	13% 14% 6% 13% 7% 5% 5% 4 5% 6% 22%	8232
	11th to 20th	Night	10% 15% 6% 15% 7% 6% 5% 3 4 5% 24%	8186
	21st to end	Night	17% 12% 5% 9% 4 4 4 3 4 6% 32%	8401
February	1st to 10th	Night	19% 12% 4 9% 5% 5% 4 3 5% 5% 28%	2568
	11th to 20th	Night	15% 12% 3 8% 6% 4 4 3 5% 6% 33%	2458
	21st to end	Night	18% 14% 4 8% 4 3 3 4 5% 5% 32%	2076
March	1st to 10th	Night	19% 13% 3 6% 4 4 3 3 4 6% 37%	5493
	11th to 20th	Night	10% 7% 3 7% 5% 4 4 3 5% 7% 44%	5138
	21st to end	Night	16% 9% 3 8% 5% 4 4 4 5% 6% 34%	5588
April	1st to 10th	Night	13% 10% 3 7% 5% 4 4 4 6% 7% 37%	2100
	11th to 20th	Night	15% 7% 3 6% 5% 4 5% 5% 6% 6% 39%	2054
	21st to end	Night	16% 6% 3 8% 4 4 4 4 7% 7% 37%	1890
May	1st to 10th	Night	19% 11% 3 9% 5% 4 5% 3 6% 7% 29%	4042
	11th to 20th	Night	15% 8% 3 8% 5% 4 5% 4 7% 8% 34%	4032
	21st to end	Night	12% 8% 3 7% 5% 4 5% 4 6% 9% 37%	4421
June	1st to 10th	Night	10% 5% 2 6% 5% 4 4 4 5% 7% 48%	1699
	11th to 20th	Night	8% 5% 2 6% 4 4 4 4 7% 12% 45%	1600
	21st to end	Night	6% 4 2 5% 4 5% 4 5% 7% 10% 48%	1600
July	1st to 10th	Night	8% 6% 2 6% 4 4 4 4 7% 9% 48%	3618
	11th to 20th	Night	7% 6% 2 6% 5% 5% 4 4 8% 10% 44%	3631
	21st to end	Night	8% 7% 2 6% 5% 5% 5% 4 8% 11% 39%	4427
August	1st to 10th	Night	8% 6% 2 6% 4 5% 5% 3 6% 9% 45%	2915
	11th to 20th	Night	6% 7% 2 6% 4 4 5% 4 6% 7% 48%	2935
	21st to end	Night	3 3 2 4 3 4 4 4 6% 9% 58%	3586
September	1st to 10th	Night	11% 5% 1 6% 3 3 3 3 5% 6% 53%	2068
	11th to 20th	Night	8% 4 2 4 3 3 4 4 5% 8% 55%	2200
	21st to end	Night	15% 6% 2 5% 4 3 3 3 4 6% 49%	2200
October	1st to 10th	Night	10% 5% 2 4 3 4 3 2 5% 6% 56%	2200
	11th to 20th	Night	13% 6% 2 6% 5% 4 4 3 5% 6% 46%	2330
	21st to end	Night	16% 8% 3 6% 5% 4 4 4 4 6% 40%	2840
November	1st to 10th	Night	12% 7% 2 5% 3 4 4 3 4 6% 49%	2666
	11th to 20th	Night	15% 8% 3 7% 4 4 4 3 5% 7% 41%	2730
	21st to end	Night	17% 12% 4 8% 5% 4 3 3 5% 6% 32%	2730
December	1st to 10th	Night	17% 11% 4 8% 4 3 4 3 4 5% 38%	4380
	11th to 20th	Night	18% 13% 6% 11% 5% 5% 4 3 4 5% 26%	4952
	21st to end	Night	23% 17% 7% 11% 5% 4 4 3 4 4 18%	7127

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	59% 4 11% 19% 6%	4692
	11th to 20th	Day	58% 5% 10% 15% 11% 1	4782
	21st to end	Day	64% 4 8% 15% 6% 3	5780
February	1st to 10th	Day	56% 4 11% 18% 10% 1	2048
	11th to 20th	Day	54% 5% 10% 20% 11% 1	2058
	21st to end	Day	54% 3 10% 22% 9% 2	1730
March	1st to 10th	Day	55% 5% 6% 19% 12% 3	4580
	11th to 20th	Day	41% 6% 9% 28% 15% 1	5040
	21st to end	Day	49% 6% 13% 19% 11% 2	5627
April	1st to 10th	Day	47% 7% 11% 22% 12% 1	2520
	11th to 20th	Day	46% 6% 10% 22% 13% 3	2513
	21st to end	Day	46% 6% 11% 23% 12% 2	2730
May	1st to 10th	Day	52% 8% 12% 17% 11% 1	5910
	11th to 20th	Day	49% 6% 11% 24% 10%	5865
	21st to end	Day	43% 9% 15% 21% 12% 1	6447
June	1st to 10th	Day	40% 7% 11% 24% 16% 3	2695
	11th to 20th	Day	37% 8% 13% 22% 18% 2	2800
	21st to end	Day	37% 9% 15% 20% 16% 4	2800
July	1st to 10th	Day	37% 7% 11% 24% 19% 1	6291
	11th to 20th	Day	38% 10% 14% 23% 14% 1	6267
	21st to end	Day	44% 10% 13% 18% 13% 2	6240
August	1st to 10th	Day	30% 9% 16% 31% 13% 1	4221
	11th to 20th	Day	35% 8% 12% 30% 14% 1	4149
	21st to end	Day	27% 7% 14% 30% 19% 4	4311
September	1st to 10th	Day	35% 6% 10% 23% 19% 5%	2310
	11th to 20th	Day	32% 6% 12% 25% 21% 3	2200
	21st to end	Day	37% 5% 10% 23% 23% 2	2200
October	1st to 10th	Day	24% 4 8% 30% 33% 2	3590
	11th to 20th	Day	29% 5% 9% 29% 26% 2	3347
	21st to end	Day	38% 3 9% 23% 24% 2	3195
November	1st to 10th	Day	35% 4 10% 29% 19% 3	1852
	11th to 20th	Day	47% 5% 8% 21% 15% 3	1890
	21st to end	Day	51% 4 8% 22% 13% 1	1890
December	1st to 10th	Day	48% 3 10% 26% 12%	3020
	11th to 20th	Day	59% 6% 8% 18% 8%	3460
	21st to end	Day	67% 5% 10% 11% 6%	4087
January	1st to 10th	Night	61% 5% 10% 15% 8%	8233
	11th to 20th	Night	63% 4 8% 12% 11% 3	8186
	21st to end	Night	54% 4 9% 22% 10% 1	8401
February	1st to 10th	Night	57% 4 11% 19% 8% 1	2568
	11th to 20th	Night	51% 5% 11% 20% 11% 1	2459
	21st to end	Night	54% 5% 10% 19% 10% 2	2076
March	1st to 10th	Night	50% 3 7% 26% 11% 3	5493
	11th to 20th	Night	38% 6% 11% 26% 18% 1	5138
	21st to end	Night	49% 5% 9% 26% 10% 1	5588
April	1st to 10th	Night	44% 6% 11% 24% 12% 2	2100
	11th to 20th	Night	42% 7% 10% 19% 16% 5%	2054
	21st to end	Night	43% 7% 10% 23% 13% 3	1890
May	1st to 10th	Night	53% 8% 10% 19% 8% 2	4069
	11th to 20th	Night	45% 7% 13% 25% 9% 1	4033
	21st to end	Night	40% 9% 16% 21% 11% 3	4429
June	1st to 10th	Night	33% 8% 10% 24% 22% 2	1699
	11th to 20th	Night	32% 7% 13% 22% 22% 4	1600
	21st to end	Night	28% 10% 17% 22% 18% 5%	1600
July	1st to 10th	Night	32% 8% 12% 24% 20% 5%	3580
	11th to 20th	Night	33% 8% 16% 27% 15% 1	3586
	21st to end	Night	37% 8% 15% 26% 13% 3	4297
August	1st to 10th	Night	33% 8% 13% 32% 12% 1	2904
	11th to 20th	Night	32% 7% 12% 31% 18% 1	2962
	21st to end	Night	22% 7% 15% 31% 22% 3	3586
September	1st to 10th	Night	31% 6% 13% 23% 19% 7%	2068
	11th to 20th	Night	27% 6% 11% 26% 27% 4	2200
	21st to end	Night	36% 6% 9% 21% 25% 3	2200
October	1st to 10th	Night	21% 4 7% 24% 41% 3	3590
	11th to 20th	Night	27% 4 9% 24% 34% 2	3790
	21st to end	Night	35% 4 8% 23% 25% 6%	4578
November	1st to 10th	Night	37% 5% 10% 22% 23% 3	2666
	11th to 20th	Night	43% 4 9% 22% 18% 4	2730
	21st to end	Night	53% 4 9% 20% 12% 1	2730
December	1st to 10th	Night	49% 4 11% 24% 11%	4380
	11th to 20th	Night	59% 4 10% 16% 9% 1	4954
	21st to end	Night	70% 4 9% 12% 4	7127

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	24% 23% 35% 15% 3	330
	11th to 20th	Day	30% 26% 32% 10% 1	330
	21st to end	Day	28% 27% 31% 12% 2	363
February	1st to 10th	Day	23% 29% 33% 12% 2	330
	11th to 20th	Day	29% 28% 32% 10% 1	330
	21st to end	Day	29% 23% 39% 8% 1	273
March	1st to 10th	Day	26% 29% 33% 10% 2	330
	11th to 20th	Day	26% 24% 33% 13% 3 1	516
	21st to end	Day	30% 20% 29% 15% 4 1	594
April	1st to 10th	Day	22% 22% 31% 16% 6% 2	540
	11th to 20th	Day	21% 23% 27% 20% 7% 2	532
	21st to end	Day	21% 21% 31% 17% 8% 2	540
May	1st to 10th	Day	25% 14% 35% 15% 6% 4	507
	11th to 20th	Day	22% 14% 27% 22% 10% 5%	527
	21st to end	Day	14% 12% 28% 22% 15% 9%	573
June	1st to 10th	Day	13% 9% 28% 27% 17% 5%	625
	11th to 20th	Day	11% 8% 24% 32% 20% 5%	730
	21st to end	Day	11% 8% 28% 30% 16% 7%	730
July	1st to 10th	Day	12% 4 18% 29% 24% 14%	721
	11th to 20th	Day	7% 5% 26% 31% 22% 10%	713
	21st to end	Day	11% 4 20% 31% 25% 10%	576
August	1st to 10th	Day	8% 4 21% 28% 24% 16%	526
	11th to 20th	Day	11% 5% 20% 31% 21% 12%	519
	21st to end	Day	7% 6% 19% 27% 29% 12%	583
September	1st to 10th	Day	11% 5% 19% 30% 28% 8%	530
	11th to 20th	Day	9% 2 18% 26% 30% 15%	530
	21st to end	Day	19% 9% 20% 24% 21% 7%	530
October	1st to 10th	Day	9% 7% 26% 30% 20% 7%	530
	11th to 20th	Day	14% 15% 32% 22% 13% 4	530
	21st to end	Day	24% 17% 39% 17% 3	378
November	1st to 10th	Day	13% 23% 34% 20% 8% 2	330
	11th to 20th	Day	23% 23% 27% 20% 5% 2	330
	21st to end	Day	27% 17% 38% 16% 2	330
December	1st to 10th	Day	23% 25% 35% 13% 4	330
	11th to 20th	Day	22% 23% 40% 11% 4	330
	21st to end	Day	30% 23% 32% 12% 2	363
January	1st to 10th	Night	23% 20% 32% 21% 4	1050
	11th to 20th	Night	25% 21% 35% 16% 2	1021
	21st to end	Night	23% 19% 35% 20% 3	924
February	1st to 10th	Night	25% 15% 36% 22% 2	840
	11th to 20th	Night	24% 19% 36% 19% 2	823
	21st to end	Night	27% 16% 36% 20% 1	692
March	1st to 10th	Night	24% 17% 32% 23% 3	840
	11th to 20th	Night	22% 16% 37% 20% 5% 1	840
	21st to end	Night	24% 13% 32% 26% 5%	924
April	1st to 10th	Night	18% 11% 38% 26% 6%	630
	11th to 20th	Night	20% 13% 31% 26% 9% 1	623
	21st to end	Night	20% 10% 37% 23% 9% 1	630
May	1st to 10th	Night	20% 11% 33% 25% 10% 1	603
	11th to 20th	Night	17% 5% 28% 29% 18% 2	591
	21st to end	Night	10% 4 26% 32% 24% 3	650
June	1st to 10th	Night	11% 4 23% 41% 21% 1	600
	11th to 20th	Night	10% 5% 20% 42% 22% 2	600
	21st to end	Night	6% 3 26% 38% 25% 3	600
July	1st to 10th	Night	10% 3 16% 31% 31% 8%	585
	11th to 20th	Night	7% 4 16% 36% 31% 5%	582
	21st to end	Night	11% 3 14% 38% 30% 3	657
August	1st to 10th	Night	7% 2 14% 39% 34% 4	597
	11th to 20th	Night	8% 2 14% 38% 33% 5%	594
	21st to end	Night	5% 2 16% 35% 36% 7%	660
September	1st to 10th	Night	13% 4 14% 37% 29% 4	668
	11th to 20th	Night	9% 4 15% 33% 34% 6%	800
	21st to end	Night	16% 7% 23% 30% 23% 2	800
October	1st to 10th	Night	12% 6% 23% 31% 24% 5%	800
	11th to 20th	Night	15% 10% 28% 30% 14% 2	800
	21st to end	Night	20% 12% 34% 24% 10%	880
November	1st to 10th	Night	16% 10% 33% 26% 14% 1	820
	11th to 20th	Night	20% 18% 29% 24% 9%	840
	21st to end	Night	23% 17% 25% 29% 5%	840
December	1st to 10th	Night	25% 17% 32% 21% 5%	840
	11th to 20th	Night	23% 16% 34% 20% 5% 1	840
	21st to end	Night	29% 18% 32% 17% 3	1145

Page generated at 2026-04-29 02:21:44. Version ac07

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