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 2024-03-18.

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	16% 12% 5% 9% 6% 3 4 4 5% 6% 30%	78487
	Night	17% 15% 7% 11% 7% 3 4 4 4 5% 24%	81283
Transparency	Day	38% 35% 8% 12% 6% 1	78195
	Night	44% 34% 7% 10% 5% 1	81110
Seeing	Day	20% 11% 28% 25% 13% 4	14247
	Night	22% 11% 28% 27% 11% 1	23753

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	17% 26% 11% 20% 8% 3 2 2 1 2 7%	2336
	11th to 20th	Day	11% 22% 11% 24% 17% 3 3 2 1 2 4	2573
	21st to end	Day	19% 19% 11% 16% 11% 4 4 3 2 3 7%	3124
February	1st to 10th	Day	14% 19% 8% 16% 12% 4 3 3 4 4 12%	1710
	11th to 20th	Day	13% 14% 11% 17% 14% 3 5% 4 4 3 13%	1663
	21st to end	Day	15% 16% 7% 10% 10% 4 4 4 4 5% 20%	1565
March	1st to 10th	Day	14% 13% 6% 13% 8% 3 4 4 4 5% 27%	2004
	11th to 20th	Day	12% 13% 6% 10% 6% 3 5% 6% 5% 5% 29%	2058
	21st to end	Day	17% 11% 4 7% 7% 3 5% 4 4 6% 32%	2178
April	1st to 10th	Day	18% 12% 6% 7% 5% 3 4 4 5% 7% 29%	2067
	11th to 20th	Day	17% 10% 3 6% 5% 3 4 4 4 8% 36%	2312
	21st to end	Day	18% 8% 4 6% 5% 3 4 5% 4 7% 35%	2340
May	1st to 10th	Day	16% 8% 3 6% 5% 3 5% 4 6% 7% 38%	2340
	11th to 20th	Day	15% 8% 3 5% 5% 3 4 4 4 7% 43%	2336
	21st to end	Day	12% 6% 2 5% 5% 3 3 4 6% 8% 45%	2725
June	1st to 10th	Day	12% 6% 2 6% 5% 4 4 5% 6% 8% 41%	2653
	11th to 20th	Day	10% 6% 2 4 5% 3 6% 5% 6% 9% 44%	2700
	21st to end	Day	14% 6% 2 4 5% 3 4 4 5% 9% 45%	2700
July	1st to 10th	Day	8% 3 1 4 4 2 4 6% 7% 9% 52%	2700
	11th to 20th	Day	11% 5% 2 4 4 3 5% 5% 6% 9% 46%	2582
	21st to end	Day	9% 5% 2 5% 5% 3 5% 5% 7% 9% 45%	2547
August	1st to 10th	Day	10% 6% 2 5% 5% 3 4 5% 6% 9% 45%	2327
	11th to 20th	Day	11% 5% 2 5% 5% 3 6% 4 5% 9% 45%	2303
	21st to end	Day	12% 6% 2 5% 4 3 5% 5% 5% 8% 43%	2574
September	1st to 10th	Day	13% 7% 2 5% 5% 4 5% 5% 6% 8% 39%	2101
	11th to 20th	Day	15% 5% 2 5% 4 2 4 5% 5% 9% 43%	1980
	21st to end	Day	18% 8% 3 6% 5% 3 4 5% 6% 7% 35%	1980
October	1st to 10th	Day	22% 8% 3 6% 6% 3 4 4 5% 7% 32%	1847
	11th to 20th	Day	26% 13% 4 8% 6% 3 5% 4 4 6% 20%	1800
	21st to end	Day	32% 16% 5% 7% 5% 3 3 3 3 5% 17%	1895
November	1st to 10th	Day	18% 21% 4 7% 6% 3 4 4 4 4 23%	1672
	11th to 20th	Day	18% 22% 7% 10% 6% 3 4 4 4 5% 17%	1534
	21st to end	Day	22% 27% 9% 10% 6% 2 4 3 2 4 11%	1520
December	1st to 10th	Day	19% 30% 15% 14% 5% 2 3 3 2 3 5%	1520
	11th to 20th	Day	19% 22% 11% 17% 7% 3 3 3 3 4 7%	1790
	21st to end	Day	28% 23% 11% 10% 6% 2 3 3 3 3 8%	2431
January	1st to 10th	Night	17% 25% 12% 20% 8% 3 3 2 2 2 5%	4619
	11th to 20th	Night	15% 21% 11% 22% 16% 3 3 2 2 2 4	4379
	21st to end	Night	18% 20% 10% 19% 9% 4 4 3 3 3 7%	4532
February	1st to 10th	Night	13% 20% 8% 16% 12% 4 4 4 4 4 11%	2470
	11th to 20th	Night	14% 16% 9% 15% 11% 4 4 4 3 4 14%	2403
	21st to end	Night	16% 13% 8% 13% 7% 3 5% 4 5% 5% 21%	1884
March	1st to 10th	Night	13% 13% 7% 12% 7% 4 4 4 4 5% 27%	2161
	11th to 20th	Night	13% 14% 6% 9% 7% 3 5% 4 5% 5% 30%	2067
	21st to end	Night	19% 11% 4 8% 6% 2 5% 4 4 5% 31%	2178
April	1st to 10th	Night	21% 11% 5% 7% 6% 2 4 4 4 6% 31%	1905
	11th to 20th	Night	18% 8% 3 6% 5% 4 3 5% 4 7% 37%	1597
	21st to end	Night	19% 10% 4 6% 6% 3 4 5% 5% 5% 32%	1620
May	1st to 10th	Night	16% 8% 4 7% 5% 4 4 5% 4 7% 37%	1620
	11th to 20th	Night	15% 8% 3 5% 5% 3 4 5% 5% 7% 40%	1555
	21st to end	Night	10% 4 2 5% 6% 3 5% 5% 5% 8% 46%	1550
June	1st to 10th	Night	15% 6% 2 5% 6% 3 4 5% 6% 8% 40%	1303
	11th to 20th	Night	12% 6% 2 6% 5% 2 5% 5% 6% 10% 41%	1260
	21st to end	Night	13% 6% 3 5% 4 3 5% 4 5% 8% 42%	1260
July	1st to 10th	Night	8% 3 2 4 5% 2 4 3 5% 10% 54%	1260
	11th to 20th	Night	10% 4 2 4 5% 4 6% 5% 6% 8% 46%	1375
	21st to end	Night	10% 6% 2 4 4 2 5% 5% 6% 7% 48%	1767
August	1st to 10th	Night	10% 5% 3 6% 5% 4 4 5% 6% 8% 46%	1611
	11th to 20th	Night	9% 5% 2 5% 4 3 4 5% 6% 9% 48%	1598
	21st to end	Night	11% 7% 2 7% 6% 4 5% 5% 4 7% 43%	1782
September	1st to 10th	Night	12% 5% 3 5% 5% 4 4 5% 6% 7% 45%	1839
	11th to 20th	Night	13% 5% 2 5% 4 3 4 4 5% 8% 47%	1980
	21st to end	Night	18% 7% 4 7% 5% 3 4 5% 4 6% 36%	1980
October	1st to 10th	Night	19% 9% 3 7% 6% 3 4 4 5% 6% 35%	2112
	11th to 20th	Night	27% 12% 5% 8% 6% 3 4 3 5% 7% 19%	2160
	21st to end	Night	29% 16% 5% 8% 6% 3 5% 4 4 4 17%	2456
November	1st to 10th	Night	20% 16% 5% 7% 5% 3 4 4 4 7% 24%	2406
	11th to 20th	Night	20% 21% 6% 10% 6% 3 4 4 4 5% 16%	2645
	21st to end	Night	24% 24% 9% 11% 5% 3 3 3 2 4 12%	2660
December	1st to 10th	Night	22% 28% 14% 12% 5% 2 3 2 3 2 7%	2660
	11th to 20th	Night	15% 24% 12% 15% 7% 3 4 3 3 3 9%	3393
	21st to end	Night	26% 24% 12% 12% 7% 3 3 3 3 3 6%	5236

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	68% 24% 6% 2	2337
	11th to 20th	Day	72% 24% 2 2 1	2573
	21st to end	Day	70% 22% 5% 3	3124
February	1st to 10th	Day	51% 34% 7% 7% 1	1710
	11th to 20th	Day	55% 35% 4 5% 2	1672
	21st to end	Day	48% 34% 8% 8% 3	1565
March	1st to 10th	Day	41% 35% 8% 12% 4	2007
	11th to 20th	Day	39% 36% 7% 12% 5% 2	2058
	21st to end	Day	35% 36% 10% 13% 5%	2178
April	1st to 10th	Day	35% 37% 7% 13% 8%	2067
	11th to 20th	Day	31% 36% 8% 13% 10% 1	2312
	21st to end	Day	33% 37% 8% 13% 8% 1	2340
May	1st to 10th	Day	31% 37% 6% 15% 11% 1	2340
	11th to 20th	Day	29% 37% 6% 16% 11% 2	2340
	21st to end	Day	25% 36% 10% 15% 11% 3	2725
June	1st to 10th	Day	28% 37% 9% 17% 9% 1	2653
	11th to 20th	Day	22% 37% 8% 19% 12% 1	2700
	21st to end	Day	26% 38% 11% 16% 8%	2700
July	1st to 10th	Day	20% 39% 11% 18% 11% 1	2626
	11th to 20th	Day	23% 38% 10% 19% 8% 2	2503
	21st to end	Day	25% 39% 9% 17% 9% 1	2405
August	1st to 10th	Day	27% 37% 10% 18% 6% 1	2314
	11th to 20th	Day	22% 38% 11% 19% 10% 1	2303
	21st to end	Day	24% 38% 9% 19% 9% 1	2574
September	1st to 10th	Day	28% 37% 9% 18% 8% 1	2101
	11th to 20th	Day	27% 37% 11% 17% 7%	1980
	21st to end	Day	34% 38% 9% 14% 5% 1	1980
October	1st to 10th	Day	34% 36% 8% 14% 7% 1	1847
	11th to 20th	Day	45% 37% 6% 8% 3 1	1800
	21st to end	Day	48% 36% 6% 7% 3	1895
November	1st to 10th	Day	37% 40% 5% 13% 4	1672
	11th to 20th	Day	42% 40% 7% 5% 5% 1	1534
	21st to end	Day	51% 38% 5% 5% 1	1520
December	1st to 10th	Day	56% 38% 3 2	1520
	11th to 20th	Day	58% 32% 6% 4 1	1789
	21st to end	Day	65% 24% 9% 2	2431
January	1st to 10th	Night	69% 24% 5% 3	4619
	11th to 20th	Night	70% 24% 3 1 1	4379
	21st to end	Night	69% 22% 6% 2 1	4532
February	1st to 10th	Night	51% 34% 6% 8% 1	2470
	11th to 20th	Night	52% 35% 7% 5% 1	2405
	21st to end	Night	47% 34% 9% 8% 3	1884
March	1st to 10th	Night	40% 35% 9% 12% 4	2171
	11th to 20th	Night	37% 35% 7% 13% 7% 1	2068
	21st to end	Night	38% 36% 7% 13% 5% 1	2178
April	1st to 10th	Night	35% 35% 6% 14% 9% 1	1905
	11th to 20th	Night	32% 36% 5% 14% 12% 1	1597
	21st to end	Night	36% 36% 5% 11% 10% 2	1620
May	1st to 10th	Night	31% 36% 6% 15% 10% 2	1620
	11th to 20th	Night	28% 37% 5% 15% 12% 3	1556
	21st to end	Night	21% 38% 10% 17% 11% 3	1551
June	1st to 10th	Night	29% 37% 9% 16% 9% 1	1303
	11th to 20th	Night	26% 37% 8% 16% 13% 1	1260
	21st to end	Night	29% 36% 8% 16% 10% 1	1260
July	1st to 10th	Night	19% 38% 8% 19% 16% 1	1225
	11th to 20th	Night	22% 38% 10% 19% 10% 1	1331
	21st to end	Night	23% 39% 11% 17% 9% 1	1669
August	1st to 10th	Night	28% 37% 9% 19% 7% 1	1600
	11th to 20th	Night	20% 36% 12% 18% 13% 2	1598
	21st to end	Night	26% 37% 8% 20% 8% 2	1782
September	1st to 10th	Night	26% 37% 7% 18% 11% 1	1839
	11th to 20th	Night	26% 36% 11% 20% 7%	1980
	21st to end	Night	33% 37% 8% 15% 6%	1980
October	1st to 10th	Night	31% 37% 8% 15% 8% 1	2112
	11th to 20th	Night	44% 36% 7% 8% 4	2160
	21st to end	Night	47% 36% 7% 6% 3	2456
November	1st to 10th	Night	33% 41% 8% 13% 5%	2406
	11th to 20th	Night	44% 39% 7% 6% 3 1	2645
	21st to end	Night	49% 39% 7% 5%	2660
December	1st to 10th	Night	55% 39% 4 2	2660
	11th to 20th	Night	55% 33% 8% 4 1	3393
	21st to end	Night	68% 24% 6% 2	5236

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% 19% 37% 13% 7% 1	216
	11th to 20th	Day	20% 19% 40% 16% 6%	270
	21st to end	Day	28% 15% 30% 24% 3	297
February	1st to 10th	Day	21% 22% 39% 14% 4	270
	11th to 20th	Day	20% 21% 42% 14% 2	270
	21st to end	Day	22% 32% 32% 13% 1	225
March	1st to 10th	Day	21% 19% 39% 14% 7%	377
	11th to 20th	Day	22% 16% 32% 24% 6% 1	449
	21st to end	Day	27% 11% 34% 22% 6% 1	462
April	1st to 10th	Day	24% 13% 34% 21% 9%	420
	11th to 20th	Day	26% 13% 30% 16% 10% 5%	412
	21st to end	Day	25% 9% 31% 23% 10% 2	420
May	1st to 10th	Day	23% 8% 30% 24% 12% 3	423
	11th to 20th	Day	20% 6% 27% 27% 16% 4	447
	21st to end	Day	16% 7% 24% 29% 20% 5%	485
June	1st to 10th	Day	13% 7% 30% 34% 15% 2	583
	11th to 20th	Day	13% 7% 28% 34% 15% 4	630
	21st to end	Day	16% 5% 27% 34% 14% 3	630
July	1st to 10th	Day	9% 4 24% 34% 24% 6%	621
	11th to 20th	Day	14% 5% 25% 32% 19% 6%	618
	21st to end	Day	11% 4 22% 36% 20% 7%	488
August	1st to 10th	Day	12% 4 21% 32% 22% 10%	446
	11th to 20th	Day	13% 3 17% 32% 21% 13%	439
	21st to end	Day	15% 4 20% 32% 22% 7%	495
September	1st to 10th	Day	12% 8% 23% 31% 17% 8%	450
	11th to 20th	Day	13% 6% 21% 27% 24% 10%	450
	21st to end	Day	16% 11% 24% 24% 16% 8%	450
October	1st to 10th	Day	23% 10% 24% 24% 15% 5%	450
	11th to 20th	Day	29% 16% 31% 18% 5% 1	450
	21st to end	Day	36% 14% 30% 16% 4	410
November	1st to 10th	Day	26% 19% 29% 19% 8%	270
	11th to 20th	Day	27% 21% 32% 13% 4 3	186
	21st to end	Day	29% 21% 33% 16% 1	180
December	1st to 10th	Day	32% 18% 33% 14% 1 1	180
	11th to 20th	Day	31% 23% 29% 14% 3	180
	21st to end	Day	36% 21% 31% 10% 3 1	198
January	1st to 10th	Night	24% 19% 34% 17% 6% 1	950
	11th to 20th	Night	28% 16% 32% 18% 5%	915
	21st to end	Night	20% 12% 36% 24% 6% 1	836
February	1st to 10th	Night	23% 18% 33% 23% 4	760
	11th to 20th	Night	23% 15% 35% 22% 5% 1	743
	21st to end	Night	22% 17% 35% 23% 3	628
March	1st to 10th	Night	19% 15% 36% 23% 6%	760
	11th to 20th	Night	18% 14% 36% 25% 6% 1	752
	21st to end	Night	23% 11% 28% 28% 10% 1	792
April	1st to 10th	Night	24% 13% 29% 28% 6%	707
	11th to 20th	Night	22% 11% 27% 29% 11% 2	533
	21st to end	Night	24% 8% 25% 31% 11% 1	540
May	1st to 10th	Night	18% 5% 29% 33% 13% 1	540
	11th to 20th	Night	19% 5% 21% 39% 15% 1	494
	21st to end	Night	13% 2 25% 40% 19% 1	389
June	1st to 10th	Night	17% 3 24% 40% 15% 1	360
	11th to 20th	Night	14% 6% 27% 35% 18% 1	360
	21st to end	Night	15% 4 22% 39% 19% 2	360
July	1st to 10th	Night	9% 3 18% 45% 24% 2	350
	11th to 20th	Night	10% 1 21% 37% 27% 4	461
	21st to end	Night	12% 3 16% 44% 24% 2	591
August	1st to 10th	Night	12% 2 15% 39% 31% 1	537
	11th to 20th	Night	10% 2 16% 36% 30% 5%	534
	21st to end	Night	14% 3 21% 33% 26% 3	594
September	1st to 10th	Night	12% 5% 21% 36% 19% 8%	702
	11th to 20th	Night	14% 4 19% 37% 21% 5%	720
	21st to end	Night	17% 8% 22% 31% 17% 5%	720
October	1st to 10th	Night	23% 7% 25% 29% 15% 2	720
	11th to 20th	Night	33% 10% 24% 24% 8% 1	720
	21st to end	Night	36% 11% 28% 21% 3	792
November	1st to 10th	Night	30% 12% 25% 24% 7% 1	740
	11th to 20th	Night	28% 19% 30% 17% 6%	760
	21st to end	Night	34% 15% 29% 19% 3	760
December	1st to 10th	Night	35% 18% 28% 15% 4	760
	11th to 20th	Night	24% 20% 37% 15% 3	828
	21st to end	Night	34% 14% 33% 16% 2	1045

Page generated at 2024-03-15 14:01:45. Version ac07

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