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 2024-11-03.

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	15% 12% 4 9% 5% 4 4 3 5% 7% 32%	101434
	Night	16% 15% 6% 11% 6% 4 4 3 4 5% 27%	97567
Transparency	Day	53% 5% 12% 19% 10% 1	101192
	Night	59% 4 10% 16% 9% 1	97428
Seeing	Day	19% 11% 28% 25% 13% 4	15207
	Night	22% 11% 28% 27% 11% 1	24468

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% 27% 10% 21% 6% 4 2 2 1 2 7%	2336
	11th to 20th	Day	11% 23% 11% 27% 14% 3 3 1 2 2 4	2573
	21st to end	Day	18% 21% 10% 19% 9% 5% 3 2 2 3 7%	3124
February	1st to 10th	Day	13% 21% 7% 17% 11% 5% 3 2 4 4 12%	1710
	11th to 20th	Day	13% 16% 10% 20% 11% 4 4 3 4 3 13%	1663
	21st to end	Day	15% 17% 6% 12% 9% 5% 4 3 4 5% 20%	1565
March	1st to 10th	Day	16% 15% 5% 11% 6% 4 4 3 3 5% 28%	3302
	11th to 20th	Day	11% 16% 8% 12% 4 4 4 4 5% 5% 25%	3480
	21st to end	Day	15% 12% 5% 11% 6% 5% 5% 3 5% 6% 27%	3815
April	1st to 10th	Day	17% 14% 5% 8% 4 4 4 3 5% 6% 29%	2183
	11th to 20th	Day	17% 10% 3 7% 4 3 4 3 5% 7% 36%	2442
	21st to end	Day	18% 9% 4 7% 4 4 4 3 5% 7% 36%	2470
May	1st to 10th	Day	15% 9% 3 7% 4 4 4 4 6% 7% 38%	4108
	11th to 20th	Day	15% 8% 2 7% 4 4 4 3 6% 9% 38%	4144
	21st to end	Day	13% 6% 2 5% 4 4 3 3 5% 7% 48%	4837
June	1st to 10th	Day	12% 6% 2 7% 5% 5% 4 4 6% 8% 40%	2801
	11th to 20th	Day	10% 6% 2 5% 4 5% 5% 4 6% 8% 44%	2850
	21st to end	Day	14% 7% 2 5% 5% 4 3 4 5% 8% 43%	2850
July	1st to 10th	Day	12% 6% 2 6% 4 4 5% 5% 8% 8% 41%	4760
	11th to 20th	Day	10% 5% 2 5% 3 4 4 4 6% 8% 49%	4544
	21st to end	Day	8% 5% 2 6% 4 4 4 4 7% 9% 47%	4466
August	1st to 10th	Day	12% 6% 2 6% 4 5% 5% 4 6% 9% 40%	4104
	11th to 20th	Day	13% 7% 2 6% 4 4 5% 4 6% 9% 40%	4044
	21st to end	Day	9% 5% 2 6% 4 4 5% 4 6% 9% 45%	4532
September	1st to 10th	Day	13% 7% 2 6% 4 4 5% 4 6% 8% 40%	2217
	11th to 20th	Day	14% 6% 2 5% 3 3 4 4 5% 8% 45%	2090
	21st to end	Day	17% 8% 3 7% 5% 4 4 4 6% 7% 35%	2090
October	1st to 10th	Day	21% 8% 2 7% 5% 4 4 3 5% 7% 33%	1949
	11th to 20th	Day	24% 14% 4 9% 5% 5% 5% 4 5% 6% 21%	1900
	21st to end	Day	30% 17% 4 8% 4 4 4 3 3 5% 17%	2000
November	1st to 10th	Day	18% 22% 3 8% 6% 4 4 3 4 4 23%	1690
	11th to 20th	Day	17% 24% 6% 11% 5% 5% 3 4 4 5% 17%	1534
	21st to end	Day	21% 29% 7% 11% 6% 4 4 2 2 4 11%	1520
December	1st to 10th	Day	18% 34% 11% 15% 5% 3 3 2 2 3 5%	1520
	11th to 20th	Day	19% 23% 10% 18% 6% 4 3 2 3 3 7%	1790
	21st to end	Day	28% 24% 11% 11% 5% 3 3 2 3 3 8%	2431
January	1st to 10th	Night	16% 26% 12% 22% 6% 4 2 2 2 2 5%	4619
	11th to 20th	Night	15% 22% 10% 25% 13% 3 2 2 2 2 4	4379
	21st to end	Night	18% 21% 10% 21% 7% 5% 4 2 3 3 7%	4532
February	1st to 10th	Night	13% 23% 7% 18% 10% 5% 3 3 4 4 11%	2470
	11th to 20th	Night	14% 18% 9% 17% 9% 5% 4 3 3 4 14%	2403
	21st to end	Night	16% 15% 7% 14% 7% 5% 4 4 5% 5% 21%	1884
March	1st to 10th	Night	12% 13% 5% 10% 5% 4 4 3 4 6% 33%	3536
	11th to 20th	Night	10% 16% 6% 10% 5% 4 4 3 5% 6% 32%	3479
	21st to end	Night	15% 11% 7% 12% 6% 4 5% 3 4 5% 28%	3817
April	1st to 10th	Night	21% 12% 5% 8% 5% 3 4 2 4 6% 31%	2010
	11th to 20th	Night	19% 9% 3 7% 4 5% 4 3 4 7% 36%	1687
	21st to end	Night	19% 11% 4 7% 5% 4 5% 4 5% 5% 32%	1710
May	1st to 10th	Night	15% 8% 3 7% 5% 4 4 3 5% 7% 39%	2833
	11th to 20th	Night	13% 10% 3 8% 5% 4 4 4 4 6% 39%	2733
	21st to end	Night	12% 4 2 6% 5% 4 4 3 5% 8% 47%	2738
June	1st to 10th	Night	15% 7% 2 5% 5% 4 4 4 6% 8% 39%	1375
	11th to 20th	Night	11% 7% 2 6% 5% 4 6% 4 6% 10% 39%	1330
	21st to end	Night	14% 6% 3 6% 4 5% 5% 3 5% 8% 41%	1330
July	1st to 10th	Night	8% 7% 3 8% 4 4 4 2 5% 8% 47%	2210
	11th to 20th	Night	11% 4 2 4 4 4 4 4 6% 7% 50%	2423
	21st to end	Night	7% 7% 2 5% 4 3 5% 4 7% 7% 48%	3083
August	1st to 10th	Night	11% 6% 3 8% 4 5% 4 4 6% 7% 43%	2825
	11th to 20th	Night	12% 7% 3 7% 4 4 4 4 5% 8% 42%	2785
	21st to end	Night	10% 6% 2 6% 4 4 5% 3 4 8% 47%	3124
September	1st to 10th	Night	12% 6% 3 6% 4 4 4 4 6% 7% 45%	1942
	11th to 20th	Night	12% 5% 2 6% 3 4 4 3 5% 8% 49%	2090
	21st to end	Night	17% 8% 4 8% 4 4 5% 4 4 6% 36%	2090
October	1st to 10th	Night	18% 8% 3 8% 5% 4 4 3 5% 6% 36%	2230
	11th to 20th	Night	26% 13% 4 9% 5% 4 3 2 5% 7% 21%	2280
	21st to end	Night	27% 16% 4 9% 4 5% 4 3 4 5% 18%	2593
November	1st to 10th	Night	20% 18% 4 8% 4 4 3 3 4 6% 24%	2433
	11th to 20th	Night	20% 22% 6% 11% 5% 4 4 3 4 5% 16%	2645
	21st to end	Night	23% 26% 8% 12% 5% 3 3 2 3 4 12%	2660
December	1st to 10th	Night	22% 33% 10% 13% 4 3 2 1 3 2 7%	2660
	11th to 20th	Night	14% 26% 11% 16% 6% 4 4 3 3 3 9%	3393
	21st to end	Night	25% 24% 11% 13% 5% 4 3 2 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	85% 3 8% 4	2337
	11th to 20th	Day	91% 2 3 3 1	2573
	21st to end	Day	86% 3 7% 4 1	3124
February	1st to 10th	Day	77% 4 8% 10% 1	1710
	11th to 20th	Day	77% 4 7% 9% 3	1672
	21st to end	Day	67% 4 11% 13% 5%	1565
March	1st to 10th	Day	60% 4 11% 17% 7% 1	3305
	11th to 20th	Day	59% 6% 11% 18% 5% 1	3480
	21st to end	Day	56% 6% 11% 16% 9% 1	3815
April	1st to 10th	Day	56% 5% 10% 19% 10%	2183
	11th to 20th	Day	48% 5% 9% 23% 14% 1	2442
	21st to end	Day	48% 6% 12% 20% 12% 2	2470
May	1st to 10th	Day	44% 7% 11% 19% 17% 2	4120
	11th to 20th	Day	43% 6% 18% 23% 9% 1	4148
	21st to end	Day	37% 5% 12% 22% 20% 5%	4837
June	1st to 10th	Day	41% 6% 12% 25% 15% 1	2801
	11th to 20th	Day	37% 6% 12% 27% 18% 1	2850
	21st to end	Day	39% 7% 14% 25% 14% 1	2850
July	1st to 10th	Day	39% 6% 17% 20% 16% 2	4686
	11th to 20th	Day	32% 5% 13% 37% 12% 1	4465
	21st to end	Day	32% 5% 15% 28% 18% 2	4324
August	1st to 10th	Day	40% 6% 13% 25% 14% 1	4091
	11th to 20th	Day	41% 6% 17% 27% 10%	4083
	21st to end	Day	35% 5% 15% 32% 12% 1	4531
September	1st to 10th	Day	41% 7% 14% 25% 11% 2	2217
	11th to 20th	Day	38% 6% 14% 28% 14% 1	2090
	21st to end	Day	48% 7% 13% 23% 8% 1	2090
October	1st to 10th	Day	51% 5% 12% 21% 10% 2	1949
	11th to 20th	Day	63% 6% 11% 14% 5% 1	1900
	21st to end	Day	71% 4 9% 12% 4	2000
November	1st to 10th	Day	64% 4 9% 16% 6%	1690
	11th to 20th	Day	69% 5% 12% 8% 5% 1	1534
	21st to end	Day	79% 4 9% 7% 1	1520
December	1st to 10th	Day	88% 3 5% 3 1	1520
	11th to 20th	Day	83% 4 8% 5% 1	1789
	21st to end	Day	84% 3 9% 3	2431
January	1st to 10th	Night	87% 3 6% 4	4619
	11th to 20th	Night	88% 3 6% 3 1	4379
	21st to end	Night	84% 4 8% 3 1	4532
February	1st to 10th	Night	78% 4 8% 9% 1	2470
	11th to 20th	Night	73% 5% 10% 10% 2	2405
	21st to end	Night	65% 5% 12% 12% 7%	1884
March	1st to 10th	Night	52% 5% 15% 21% 6%	3546
	11th to 20th	Night	54% 4 13% 19% 9% 1	3480
	21st to end	Night	57% 5% 9% 20% 8% 1	3817
April	1st to 10th	Night	56% 5% 8% 20% 11% 1	2010
	11th to 20th	Night	48% 5% 8% 20% 17% 1	1687
	21st to end	Night	53% 5% 8% 17% 15% 2	1710
May	1st to 10th	Night	44% 5% 11% 21% 15% 4	2840
	11th to 20th	Night	44% 6% 10% 23% 15% 2	2734
	21st to end	Night	36% 4 12% 23% 20% 4	2739
June	1st to 10th	Night	41% 5% 11% 24% 16% 3	1375
	11th to 20th	Night	38% 6% 13% 24% 17% 2	1330
	21st to end	Night	40% 6% 11% 25% 17% 2	1330
July	1st to 10th	Night	37% 4 11% 25% 17% 6%	2175
	11th to 20th	Night	32% 5% 12% 34% 16% 1	2379
	21st to end	Night	33% 6% 14% 25% 21% 2	2985
August	1st to 10th	Night	40% 5% 11% 29% 15% 1	2814
	11th to 20th	Night	41% 5% 15% 23% 15% 1	2812
	21st to end	Night	37% 5% 11% 33% 13% 1	3124
September	1st to 10th	Night	37% 6% 11% 29% 14% 2	1942
	11th to 20th	Night	35% 4 15% 29% 16% 1	2090
	21st to end	Night	48% 5% 12% 24% 10% 1	2090
October	1st to 10th	Night	48% 6% 11% 21% 13% 1	2230
	11th to 20th	Night	63% 5% 12% 15% 6%	2280
	21st to end	Night	69% 4 11% 12% 5%	2593
November	1st to 10th	Night	60% 5% 11% 18% 6%	2433
	11th to 20th	Night	70% 5% 11% 10% 4 1	2645
	21st to end	Night	77% 4 11% 7% 1	2660
December	1st to 10th	Night	85% 3 6% 4 1	2660
	11th to 20th	Night	80% 4 10% 5% 1	3393
	21st to end	Night	86% 3 8% 3	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	460
	21st to end	Day	25% 13% 34% 22% 6% 1	506
April	1st to 10th	Day	23% 14% 34% 20% 8%	460
	11th to 20th	Day	27% 14% 30% 16% 9% 4	452
	21st to end	Day	24% 10% 30% 24% 10% 2	460
May	1st to 10th	Day	22% 8% 31% 24% 12% 3	463
	11th to 20th	Day	19% 7% 26% 28% 16% 4	487
	21st to end	Day	16% 8% 25% 29% 19% 5%	529
June	1st to 10th	Day	12% 8% 30% 34% 14% 1	631
	11th to 20th	Day	12% 7% 29% 34% 14% 3	680
	21st to end	Day	18% 6% 28% 33% 13% 3	680
July	1st to 10th	Day	10% 4 25% 34% 22% 5%	671
	11th to 20th	Day	13% 5% 26% 31% 19% 6%	668
	21st to end	Day	11% 4 21% 36% 20% 7%	532
August	1st to 10th	Day	12% 5% 22% 32% 21% 9%	486
	11th to 20th	Day	13% 4 19% 32% 20% 12%	479
	21st to end	Day	14% 5% 20% 32% 23% 7%	539
September	1st to 10th	Day	13% 8% 23% 30% 17% 8%	490
	11th to 20th	Day	12% 5% 19% 27% 24% 12%	490
	21st to end	Day	16% 10% 25% 26% 16% 8%	490
October	1st to 10th	Day	22% 10% 24% 23% 14% 6%	490
	11th to 20th	Day	27% 16% 31% 19% 6% 1	490
	21st to end	Day	35% 15% 29% 16% 4	449
November	1st to 10th	Day	26% 18% 29% 19% 8%	276
	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% 15% 36% 24% 6% 1	760
	21st to end	Night	22% 11% 29% 27% 9% 1	836
April	1st to 10th	Night	24% 13% 29% 27% 6%	746
	11th to 20th	Night	22% 11% 27% 28% 10% 2	563
	21st to end	Night	24% 8% 26% 31% 11% 1	570
May	1st to 10th	Night	17% 5% 30% 33% 13% 1	570
	11th to 20th	Night	18% 6% 21% 39% 15% 1	521
	21st to end	Night	13% 2 24% 41% 18% 1	411
June	1st to 10th	Night	17% 3 24% 39% 15% 1	380
	11th to 20th	Night	13% 6% 28% 35% 17% 1	380
	21st to end	Night	16% 5% 22% 39% 18% 2	380
July	1st to 10th	Night	9% 2 19% 45% 23% 2	370
	11th to 20th	Night	10% 1 22% 37% 26% 4	488
	21st to end	Night	12% 3 15% 44% 25% 2	624
August	1st to 10th	Night	12% 2 14% 40% 30% 2	567
	11th to 20th	Night	10% 2 16% 36% 30% 5%	564
	21st to end	Night	14% 3 20% 34% 26% 3	627
September	1st to 10th	Night	12% 5% 21% 35% 19% 7%	741
	11th to 20th	Night	13% 3 18% 36% 24% 5%	760
	21st to end	Night	17% 8% 23% 32% 16% 5%	760
October	1st to 10th	Night	22% 7% 26% 29% 15% 1	760
	11th to 20th	Night	32% 10% 24% 25% 9% 1	760
	21st to end	Night	34% 11% 29% 22% 3	836
November	1st to 10th	Night	31% 12% 25% 24% 7% 1	749
	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 2024-10-31 03:39:22. Version ac07

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