Kincardine
Clear Sky Chart
History

This sumarizes the distribution of each different forecast outcome for the Kincardine clear sky chart from 2005-11-06 to 2026-10-29.

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	14% 12% 4 10% 5% 4 4 3 5% 7% 32%	149669
	Night	15% 14% 6% 13% 6% 4 4 3 4 5% 26%	142474
Transparency	Day	53% 4 11% 20% 10% 1	153217
	Night	60% 4 10% 17% 9% 1	147014
Seeing	Day	20% 11% 29% 25% 12% 4	17835
	Night	22% 11% 28% 27% 11% 1	27031

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	14% 23% 12% 26% 8% 5% 2 2 2 2 5%	4334
	11th to 20th	Day	9% 24% 12% 29% 14% 5% 2 1 1 1 2	4774
	21st to end	Day	11% 16% 10% 24% 13% 9% 5% 3 3 2 5%	5780
February	1st to 10th	Day	13% 20% 7% 17% 11% 5% 3 2 4 4 13%	1890
	11th to 20th	Day	13% 16% 10% 20% 11% 5% 4 3 3 3 12%	1843
	21st to end	Day	14% 17% 6% 14% 8% 5% 4 3 4 5% 19%	1725
March	1st to 10th	Day	15% 13% 6% 14% 8% 3 4 3 4 5% 26%	4852
	11th to 20th	Day	12% 15% 6% 11% 4 4 4 4 6% 7% 25%	5090
	21st to end	Day	18% 14% 6% 12% 5% 4 4 3 4 6% 25%	5586
April	1st to 10th	Day	17% 13% 5% 9% 4 4 4 3 5% 6% 29%	2414
	11th to 20th	Day	18% 10% 3 7% 4 3 4 3 5% 7% 36%	2702
	21st to end	Day	17% 9% 4 7% 4 4 4 4 5% 7% 36%	2730
May	1st to 10th	Day	14% 8% 3 7% 4 5% 4 4 6% 7% 38%	7642
	11th to 20th	Day	14% 8% 3 7% 4 4 4 4 5% 9% 38%	7745
	21st to end	Day	17% 8% 2 5% 3 3 3 3 5% 6% 45%	9060
June	1st to 10th	Day	12% 6% 2 7% 5% 5% 4 4 6% 8% 41%	3096
	11th to 20th	Day	10% 6% 2 6% 5% 5% 5% 4 6% 9% 43%	3150
	21st to end	Day	14% 7% 2 5% 5% 4 3 4 5% 8% 43%	3150
July	1st to 10th	Day	12% 7% 2 6% 4 4 4 4 7% 9% 42%	8879
	11th to 20th	Day	9% 5% 2 4 3 4 4 3 5% 9% 51%	8468
	21st to end	Day	8% 6% 2 5% 4 4 4 3 6% 9% 49%	8340
August	1st to 10th	Day	15% 6% 2 6% 4 4 4 4 6% 8% 40%	6014
	11th to 20th	Day	11% 6% 2 6% 4 4 5% 4 6% 9% 42%	5951
	21st to end	Day	14% 7% 3 7% 4 4 5% 4 6% 9% 38%	6594
September	1st to 10th	Day	13% 7% 2 6% 4 4 5% 4 6% 8% 40%	2450
	11th to 20th	Day	13% 6% 2 5% 3 3 5% 4 5% 8% 45%	2310
	21st to end	Day	16% 8% 3 7% 5% 4 4 4 6% 7% 36%	2310
October	1st to 10th	Day	20% 8% 2 7% 5% 4 4 4 5% 8% 35%	2154
	11th to 20th	Day	23% 14% 4 8% 5% 5% 5% 4 5% 6% 23%	2100
	21st to end	Day	28% 17% 4 9% 4 4 4 3 3 5% 19%	2183
November	1st to 10th	Day	19% 22% 4 8% 6% 4 4 3 4 4 23%	1852
	11th to 20th	Day	17% 23% 6% 12% 5% 5% 3 3 4 5% 17%	1694
	21st to end	Day	20% 31% 8% 11% 5% 3 3 2 2 4 10%	1680
December	1st to 10th	Day	17% 37% 11% 15% 5% 3 3 2 2 2 3	2680
	11th to 20th	Day	20% 24% 9% 21% 5% 3 3 2 3 2 6%	2894
	21st to end	Day	27% 23% 9% 13% 6% 3 3 3 3 3 7%	3553
January	1st to 10th	Night	14% 22% 13% 31% 6% 4 2 1 2 2 4	8576
	11th to 20th	Night	11% 24% 11% 29% 12% 3 2 1 2 2 3	8119
	21st to end	Night	11% 16% 8% 22% 13% 9% 6% 2 3 3 6%	8401
February	1st to 10th	Night	13% 21% 7% 19% 10% 5% 3 3 4 4 11%	2730
	11th to 20th	Night	14% 17% 9% 17% 9% 5% 4 3 3 4 15%	2663
	21st to end	Night	16% 16% 7% 14% 7% 5% 4 4 5% 5% 20%	2076
March	1st to 10th	Night	14% 13% 5% 12% 7% 4 4 4 4 6% 27%	5206
	11th to 20th	Night	10% 15% 6% 9% 5% 5% 5% 4 6% 7% 29%	5089
	21st to end	Night	20% 12% 6% 13% 6% 3 4 3 4 4 26%	5588
April	1st to 10th	Night	20% 12% 5% 9% 5% 3 4 2 5% 6% 29%	2221
	11th to 20th	Night	18% 9% 3 8% 5% 5% 4 3 4 7% 35%	1867
	21st to end	Night	18% 10% 4 7% 5% 4 5% 4 5% 6% 32%	1890
May	1st to 10th	Night	16% 8% 3 8% 5% 4 4 3 5% 7% 37%	5257
	11th to 20th	Night	16% 8% 3 7% 4 3 4 3 4 6% 40%	5099
	21st to end	Night	18% 6% 2 5% 4 3 3 3 4 7% 45%	5114
June	1st to 10th	Night	15% 7% 2 5% 5% 4 4 4 6% 8% 40%	1519
	11th to 20th	Night	11% 6% 2 6% 5% 4 6% 4 7% 10% 38%	1470
	21st to end	Night	13% 6% 3 6% 4 5% 5% 3 6% 8% 40%	1470
July	1st to 10th	Night	9% 8% 3 8% 4 4 4 3 5% 9% 44%	4110
	11th to 20th	Night	9% 5% 2 5% 4 4 4 4 6% 9% 49%	4505
	21st to end	Night	11% 6% 2 5% 4 3 4 3 5% 7% 48%	5733
August	1st to 10th	Night	13% 7% 3 7% 4 4 4 3 5% 7% 41%	4135
	11th to 20th	Night	12% 7% 3 7% 4 4 4 3 5% 8% 45%	4095
	21st to end	Night	15% 8% 3 7% 4 4 4 3 4 7% 40%	4532
September	1st to 10th	Night	12% 6% 3 6% 4 4 4 4 6% 7% 45%	2146
	11th to 20th	Night	11% 5% 2 6% 3 4 4 3 5% 8% 50%	2310
	21st to end	Night	16% 8% 4 8% 4 4 5% 4 4 6% 37%	2310
October	1st to 10th	Night	17% 8% 2 7% 5% 4 4 3 5% 7% 38%	2465
	11th to 20th	Night	26% 12% 4 9% 5% 4 3 2 5% 7% 22%	2520
	21st to end	Night	26% 15% 4 9% 4 4 4 3 4 5% 21%	2828
November	1st to 10th	Night	19% 18% 5% 9% 4 5% 3 3 4 6% 24%	2666
	11th to 20th	Night	19% 22% 6% 11% 5% 4 4 3 4 5% 16%	2924
	21st to end	Night	23% 26% 8% 11% 5% 4 3 2 3 4 11%	2940
December	1st to 10th	Night	17% 31% 12% 17% 5% 4 3 2 3 2 5%	4720
	11th to 20th	Night	13% 28% 11% 18% 7% 4 3 2 3 2 8%	5513
	21st to end	Night	22% 23% 10% 15% 7% 4 3 3 4 3 7%	7667

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	86% 3 7% 4 1	4335
	11th to 20th	Day	93% 2 2 2 1	4805
	21st to end	Day	84% 4 7% 4 1	5780
February	1st to 10th	Day	77% 4 8% 10% 1	1890
	11th to 20th	Day	78% 4 6% 9% 3	1852
	21st to end	Day	68% 4 10% 13% 5%	1725
March	1st to 10th	Day	63% 4 13% 14% 6%	4855
	11th to 20th	Day	57% 5% 12% 19% 6% 1	5090
	21st to end	Day	62% 5% 10% 15% 8% 1	5586
April	1st to 10th	Day	57% 5% 9% 19% 10%	2414
	11th to 20th	Day	49% 5% 9% 23% 14% 1	2702
	21st to end	Day	48% 6% 12% 21% 11% 2	2730
May	1st to 10th	Day	43% 6% 12% 22% 13% 4	7651
	11th to 20th	Day	44% 5% 13% 23% 15% 1	7749
	21st to end	Day	42% 3 9% 26% 17% 4	9061
June	1st to 10th	Day	40% 6% 11% 25% 16% 1	3096
	11th to 20th	Day	38% 6% 11% 27% 16% 1	3150
	21st to end	Day	40% 6% 14% 25% 14% 1	3150
July	1st to 10th	Day	39% 5% 16% 23% 16% 1	8806
	11th to 20th	Day	31% 3 12% 38% 15% 1	8389
	21st to end	Day	32% 4 14% 32% 17% 1	8156
August	1st to 10th	Day	43% 5% 13% 22% 15% 2	6001
	11th to 20th	Day	38% 5% 19% 30% 8%	5990
	21st to end	Day	43% 4 16% 27% 9%	6593
September	1st to 10th	Day	41% 7% 14% 26% 11% 2	2450
	11th to 20th	Day	37% 6% 15% 29% 13%	2310
	21st to end	Day	47% 6% 12% 22% 11% 1	2310
October	1st to 10th	Day	45% 5% 12% 28% 9% 1	3440
	11th to 20th	Day	52% 5% 11% 22% 10%	3340
	21st to end	Day	62% 4 12% 17% 5%	3459
November	1st to 10th	Day	65% 4 9% 16% 6%	1852
	11th to 20th	Day	69% 5% 11% 8% 6% 1	1694
	21st to end	Day	80% 4 8% 7% 1	1680
December	1st to 10th	Day	90% 3 4 2 1	2680
	11th to 20th	Day	85% 3 6% 6% 1	2893
	21st to end	Day	82% 4 7% 6% 1	3553
January	1st to 10th	Night	89% 3 5% 3	8576
	11th to 20th	Night	91% 2 4 2 1	8163
	21st to end	Night	81% 6% 7% 4 2	8401
February	1st to 10th	Night	78% 4 7% 10% 1	2730
	11th to 20th	Night	73% 5% 10% 11% 2	2665
	21st to end	Night	65% 4 12% 12% 6%	2076
March	1st to 10th	Night	58% 5% 13% 17% 7% 1	5216
	11th to 20th	Night	53% 4 15% 19% 8% 1	5090
	21st to end	Night	62% 4 8% 16% 9% 1	5588
April	1st to 10th	Night	56% 5% 8% 19% 11% 1	2221
	11th to 20th	Night	49% 5% 7% 20% 17% 1	1867
	21st to end	Night	53% 5% 9% 18% 14% 2	1890
May	1st to 10th	Night	46% 4 8% 21% 14% 6%	5264
	11th to 20th	Night	45% 6% 9% 23% 17% 1	5100
	21st to end	Night	40% 3 8% 27% 19% 3	5115
June	1st to 10th	Night	40% 5% 10% 24% 18% 3	1519
	11th to 20th	Night	39% 6% 12% 24% 16% 2	1470
	21st to end	Night	40% 6% 11% 25% 16% 2	1470
July	1st to 10th	Night	39% 4 15% 24% 16% 3	4075
	11th to 20th	Night	32% 4 11% 32% 19% 2	4461
	21st to end	Night	35% 4 10% 29% 20% 2	5603
August	1st to 10th	Night	43% 4 10% 25% 15% 3	4124
	11th to 20th	Night	39% 4 16% 29% 11% 1	4122
	21st to end	Night	46% 4 11% 29% 10% 1	4532
September	1st to 10th	Night	37% 6% 12% 30% 13% 2	2146
	11th to 20th	Night	34% 4 15% 30% 16% 1	2310
	21st to end	Night	47% 5% 12% 23% 12% 2	2310
October	1st to 10th	Night	39% 6% 10% 29% 16% 1	3959
	11th to 20th	Night	53% 4 14% 19% 11%	4019
	21st to end	Night	55% 4 15% 19% 7%	4502
November	1st to 10th	Night	61% 5% 11% 18% 5%	2666
	11th to 20th	Night	70% 4 10% 10% 4 1	2924
	21st to end	Night	78% 4 10% 7% 1	2940
December	1st to 10th	Night	87% 3 6% 3 1	4720
	11th to 20th	Night	81% 5% 7% 6% 1	5513
	21st to end	Night	81% 5% 7% 6% 1	7667

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	23% 20% 39% 11% 6% 1	264
	11th to 20th	Day	21% 23% 37% 14% 5%	330
	21st to end	Day	26% 17% 31% 21% 4	363
February	1st to 10th	Day	22% 23% 37% 14% 4 1	330
	11th to 20th	Day	22% 21% 40% 15% 2	330
	21st to end	Day	23% 29% 32% 14% 2	273
March	1st to 10th	Day	22% 20% 39% 13% 6%	449
	11th to 20th	Day	25% 18% 30% 22% 5% 1	540
	21st to end	Day	28% 14% 33% 20% 5% 1	594
April	1st to 10th	Day	26% 14% 34% 19% 7%	540
	11th to 20th	Day	29% 13% 28% 16% 9% 4	532
	21st to end	Day	24% 10% 31% 24% 9% 1	540
May	1st to 10th	Day	20% 9% 34% 24% 10% 2	543
	11th to 20th	Day	19% 8% 27% 26% 15% 4	567
	21st to end	Day	19% 7% 27% 26% 17% 4	617
June	1st to 10th	Day	12% 9% 31% 33% 13% 1	726
	11th to 20th	Day	12% 8% 31% 33% 13% 3	780
	21st to end	Day	18% 6% 28% 34% 12% 2	780
July	1st to 10th	Day	11% 4 26% 34% 21% 5%	771
	11th to 20th	Day	13% 5% 27% 32% 19% 5%	768
	21st to end	Day	11% 4 23% 36% 19% 7%	620
August	1st to 10th	Day	11% 4 22% 34% 21% 8%	566
	11th to 20th	Day	13% 4 20% 33% 19% 11%	559
	21st to end	Day	16% 5% 21% 30% 21% 7%	627
September	1st to 10th	Day	13% 8% 24% 29% 18% 8%	570
	11th to 20th	Day	11% 5% 20% 28% 24% 12%	570
	21st to end	Day	16% 9% 24% 27% 16% 8%	570
October	1st to 10th	Day	21% 11% 25% 23% 15% 5%	570
	11th to 20th	Day	26% 15% 33% 19% 6% 1	570
	21st to end	Day	33% 13% 29% 19% 7%	518
November	1st to 10th	Day	29% 18% 28% 18% 7%	330
	11th to 20th	Day	27% 23% 32% 12% 4 2	226
	21st to end	Day	34% 20% 31% 15%	220
December	1st to 10th	Day	33% 19% 31% 14% 1 1	220
	11th to 20th	Day	34% 22% 28% 14% 3	220
	21st to end	Day	37% 19% 30% 10% 3	242
January	1st to 10th	Night	23% 20% 34% 17% 5%	1050
	11th to 20th	Night	28% 17% 32% 18% 4	1011
	21st to end	Night	20% 15% 36% 23% 5% 1	924
February	1st to 10th	Night	22% 18% 33% 23% 4	840
	11th to 20th	Night	23% 16% 35% 21% 4	823
	21st to end	Night	22% 17% 35% 23% 3	692
March	1st to 10th	Night	19% 16% 35% 23% 6%	840
	11th to 20th	Night	19% 16% 35% 24% 5% 1	840
	21st to end	Night	23% 13% 29% 26% 9% 1	924
April	1st to 10th	Night	24% 13% 31% 26% 5%	824
	11th to 20th	Night	22% 12% 27% 28% 10% 1	623
	21st to end	Night	23% 9% 25% 32% 10% 1	630
May	1st to 10th	Night	17% 6% 31% 33% 12% 1	630
	11th to 20th	Night	19% 6% 23% 38% 14% 1	577
	21st to end	Night	15% 3 25% 40% 16% 1	455
June	1st to 10th	Night	17% 4 25% 39% 15% 1	420
	11th to 20th	Night	13% 6% 30% 35% 16%	420
	21st to end	Night	15% 5% 22% 39% 17% 1	420
July	1st to 10th	Night	9% 2 18% 48% 21% 2	410
	11th to 20th	Night	10% 1 22% 38% 25% 3	541
	21st to end	Night	12% 3 16% 44% 24% 1	690
August	1st to 10th	Night	12% 2 15% 40% 29% 1	627
	11th to 20th	Night	11% 2 16% 38% 28% 4	624
	21st to end	Night	15% 3 19% 34% 26% 3	693
September	1st to 10th	Night	13% 5% 21% 35% 19% 7%	819
	11th to 20th	Night	13% 3 18% 37% 25% 4	840
	21st to end	Night	16% 7% 22% 33% 17% 5%	840
October	1st to 10th	Night	21% 7% 27% 30% 14% 1	840
	11th to 20th	Night	32% 10% 25% 25% 8% 1	840
	21st to end	Night	33% 11% 28% 24% 4	913
November	1st to 10th	Night	31% 13% 25% 23% 7% 1	820
	11th to 20th	Night	28% 19% 29% 18% 6%	840
	21st to end	Night	34% 15% 29% 18% 3	840
December	1st to 10th	Night	34% 19% 29% 14% 4	840
	11th to 20th	Night	24% 21% 37% 15% 3	916
	21st to end	Night	34% 14% 34% 16% 2	1155

Page generated at 2026-10-26 04:37:48. Version ac07

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