Kitscoty
Clear Sky Chart
History

This sumarizes the distribution of each different forecast outcome for the Kitscoty clear sky chart from 2005-11-06 to 2024-01-12.

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	11% 9% 4 8% 7% 4 6% 5% 6% 8% 33%	74537
	Night	8% 9% 4 8% 8% 4 6% 5% 6% 8% 33%	75175
Transparency	Day	47% 8% 17% 21% 7% 1	74217
	Night	47% 8% 15% 20% 9% 1	75013
Seeing	Day	14% 7% 26% 31% 17% 5%	14433
	Night	13% 6% 29% 35% 15% 2	23697

By Month

Percentage Cloud Cover NW (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	9% 10% 6% 12% 10% 5% 6% 5% 7% 7% 22%	1329
	11th to 20th	Day	10% 11% 5% 9% 9% 5% 6% 7% 6% 7% 25%	1270
	21st to end	Day	7% 13% 8% 12% 10% 4 5% 5% 5% 6% 23%	1386
February	1st to 10th	Day	7% 11% 5% 13% 9% 5% 7% 7% 6% 7% 22%	1499
	11th to 20th	Day	7% 13% 7% 11% 10% 5% 7% 4 7% 7% 23%	1575
	21st to end	Day	6% 11% 5% 10% 9% 6% 7% 8% 7% 9% 21%	1332
March	1st to 10th	Day	9% 13% 5% 9% 11% 6% 10% 6% 6% 7% 19%	1808
	11th to 20th	Day	8% 10% 6% 10% 6% 3 5% 5% 6% 9% 32%	1979
	21st to end	Day	9% 12% 5% 12% 8% 5% 5% 5% 5% 6% 28%	2182
April	1st to 10th	Day	8% 11% 4 8% 8% 4 6% 5% 5% 7% 33%	2240
	11th to 20th	Day	13% 9% 5% 8% 7% 4 5% 6% 5% 7% 30%	2310
	21st to end	Day	15% 10% 3 7% 5% 3 5% 6% 7% 7% 33%	2408
May	1st to 10th	Day	10% 9% 3 8% 8% 4 6% 6% 6% 8% 33%	2533
	11th to 20th	Day	9% 7% 3 6% 6% 4 6% 5% 6% 8% 40%	2654
	21st to end	Day	16% 7% 3 6% 5% 4 6% 6% 5% 8% 33%	2917
June	1st to 10th	Day	15% 7% 3 7% 7% 4 7% 5% 7% 8% 30%	2740
	11th to 20th	Day	21% 10% 4 6% 6% 4 6% 5% 7% 9% 22%	2880
	21st to end	Day	12% 6% 3 6% 6% 4 5% 6% 8% 9% 34%	2793
July	1st to 10th	Day	10% 5% 2 5% 6% 3 7% 6% 8% 9% 40%	2700
	11th to 20th	Day	10% 7% 3 6% 6% 4 6% 6% 7% 10% 35%	2700
	21st to end	Day	8% 6% 2 4 5% 3 5% 5% 7% 9% 45%	2938
August	1st to 10th	Day	11% 5% 3 5% 6% 4 6% 6% 6% 9% 40%	2647
	11th to 20th	Day	10% 6% 2 5% 4 3 5% 5% 7% 9% 43%	2316
	21st to end	Day	11% 6% 3 5% 5% 3 4 5% 6% 10% 43%	2574
September	1st to 10th	Day	12% 6% 2 6% 6% 4 5% 5% 7% 8% 40%	2233
	11th to 20th	Day	16% 7% 3 5% 5% 3 4 4 5% 8% 40%	2070
	21st to end	Day	10% 7% 3 6% 5% 3 4 5% 6% 9% 44%	1959
October	1st to 10th	Day	12% 12% 4 7% 5% 3 4 4 5% 6% 38%	1800
	11th to 20th	Day	11% 8% 5% 7% 7% 3 4 4 5% 8% 39%	1774
	21st to end	Day	8% 12% 5% 9% 8% 4 5% 4 6% 8% 31%	1652
November	1st to 10th	Day	12% 15% 6% 8% 8% 4 5% 4 5% 9% 24%	1488
	11th to 20th	Day	7% 13% 6% 15% 9% 4 5% 5% 5% 7% 24%	1505
	21st to end	Day	6% 11% 6% 13% 8% 4 6% 5% 6% 8% 26%	1330
December	1st to 10th	Day	7% 13% 5% 10% 8% 5% 7% 6% 6% 8% 25%	1198
	11th to 20th	Day	7% 10% 4 13% 9% 5% 6% 7% 7% 9% 24%	1439
	21st to end	Day	4 8% 4 9% 6% 3 6% 5% 5% 8% 42%	2379
January	1st to 10th	Night	7% 10% 5% 10% 10% 6% 8% 7% 7% 7% 23%	2836
	11th to 20th	Night	6% 10% 6% 11% 9% 5% 7% 6% 5% 8% 28%	2730
	21st to end	Night	7% 14% 7% 11% 9% 5% 7% 6% 6% 7% 22%	2970
February	1st to 10th	Night	6% 11% 5% 10% 10% 5% 7% 6% 7% 9% 24%	2475
	11th to 20th	Night	6% 11% 5% 9% 10% 5% 8% 6% 8% 8% 27%	2272
	21st to end	Night	4 8% 5% 12% 9% 5% 6% 6% 7% 10% 30%	1924
March	1st to 10th	Night	8% 11% 5% 10% 9% 4 7% 6% 7% 8% 26%	2151
	11th to 20th	Night	8% 10% 5% 7% 7% 3 5% 6% 7% 8% 34%	1980
	21st to end	Night	8% 13% 5% 10% 7% 5% 5% 5% 6% 9% 28%	2174
April	1st to 10th	Night	7% 8% 3 6% 6% 4 6% 6% 7% 7% 39%	1717
	11th to 20th	Night	9% 9% 4 9% 9% 4 6% 5% 7% 9% 30%	1601
	21st to end	Night	12% 11% 4 7% 6% 3 4 4 6% 8% 35%	1551
May	1st to 10th	Night	10% 8% 4 9% 6% 3 5% 7% 6% 8% 34%	1425
	11th to 20th	Night	10% 6% 3 6% 5% 3 6% 7% 6% 8% 40%	1239
	21st to end	Night	14% 9% 3 6% 7% 3 5% 6% 7% 8% 31%	1358
June	1st to 10th	Night	12% 7% 4 8% 7% 4 6% 5% 7% 8% 31%	1216
	11th to 20th	Night	19% 9% 6% 6% 5% 4 5% 5% 7% 7% 27%	1080
	21st to end	Night	11% 4 2 6% 6% 3 6% 6% 7% 9% 40%	1160
July	1st to 10th	Night	10% 4 2 3 5% 3 6% 5% 7% 10% 46%	1260
	11th to 20th	Night	9% 5% 2 5% 6% 3 5% 6% 8% 9% 42%	1260
	21st to end	Night	7% 4 1 4 5% 2 6% 4 8% 9% 50%	1379
August	1st to 10th	Night	8% 4 1 5% 5% 4 5% 6% 8% 10% 44%	1292
	11th to 20th	Night	10% 5% 3 5% 5% 3 4 5% 8% 10% 42%	1583
	21st to end	Night	9% 6% 2 5% 5% 3 3 5% 6% 7% 48%	1782
September	1st to 10th	Night	13% 6% 2 4 5% 3 4 5% 5% 6% 47%	1726
	11th to 20th	Night	11% 6% 3 4 5% 4 4 4 4 7% 48%	1889
	21st to end	Night	6% 6% 2 5% 5% 3 5% 4 6% 9% 48%	2001
October	1st to 10th	Night	10% 8% 4 6% 6% 3 5% 5% 6% 9% 39%	2160
	11th to 20th	Night	8% 9% 5% 7% 6% 3 4 5% 6% 8% 40%	2184
	21st to end	Night	9% 11% 4 9% 7% 4 5% 5% 6% 7% 33%	2685
November	1st to 10th	Night	14% 13% 5% 8% 7% 4 5% 5% 5% 5% 27%	2590
	11th to 20th	Night	8% 10% 6% 13% 11% 4 5% 5% 5% 7% 25%	2674
	21st to end	Night	5% 10% 7% 13% 9% 4 6% 4 5% 7% 29%	2850
December	1st to 10th	Night	7% 11% 6% 11% 9% 5% 7% 6% 6% 8% 25%	2978
	11th to 20th	Night	7% 12% 6% 13% 11% 6% 7% 5% 6% 7% 21%	3753
	21st to end	Night	3 7% 3 6% 8% 5% 6% 5% 6% 6% 44%	5270

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% 6% 13% 14% 7% 1	1329
	11th to 20th	Day	57% 7% 14% 14% 7% 1	1270
	21st to end	Day	61% 6% 9% 15% 8%	1386
February	1st to 10th	Day	57% 8% 12% 18% 6%	1499
	11th to 20th	Day	59% 7% 12% 14% 6% 1	1584
	21st to end	Day	56% 9% 11% 17% 7%	1332
March	1st to 10th	Day	61% 9% 15% 13% 2	1808
	11th to 20th	Day	48% 7% 16% 20% 7%	1980
	21st to end	Day	56% 7% 16% 17% 5%	2182
April	1st to 10th	Day	49% 8% 14% 21% 9%	2240
	11th to 20th	Day	51% 7% 14% 19% 8% 2	2310
	21st to end	Day	48% 7% 15% 20% 8% 2	2408
May	1st to 10th	Day	47% 8% 13% 21% 11%	2533
	11th to 20th	Day	39% 7% 14% 26% 12% 1	2658
	21st to end	Day	45% 8% 15% 21% 10%	2918
June	1st to 10th	Day	48% 9% 15% 20% 7%	2740
	11th to 20th	Day	57% 10% 13% 16% 4 1	2880
	21st to end	Day	43% 10% 21% 21% 4 1	2793
July	1st to 10th	Day	36% 11% 22% 25% 5% 1	2626
	11th to 20th	Day	41% 12% 25% 20% 2	2619
	21st to end	Day	33% 11% 26% 26% 4	2775
August	1st to 10th	Day	38% 12% 22% 24% 4	2629
	11th to 20th	Day	36% 9% 26% 22% 6%	2316
	21st to end	Day	35% 9% 20% 29% 5% 1	2574
September	1st to 10th	Day	39% 9% 19% 23% 8% 2	2233
	11th to 20th	Day	43% 6% 18% 27% 6%	2070
	21st to end	Day	37% 8% 17% 27% 9% 2	1959
October	1st to 10th	Day	46% 7% 16% 24% 7%	1800
	11th to 20th	Day	44% 6% 16% 26% 8%	1774
	21st to end	Day	50% 8% 17% 17% 8%	1652
November	1st to 10th	Day	58% 8% 11% 17% 6%	1488
	11th to 20th	Day	59% 10% 15% 13% 3	1505
	21st to end	Day	54% 10% 15% 16% 4	1330
December	1st to 10th	Day	56% 9% 11% 18% 6% 1	1198
	11th to 20th	Day	55% 8% 16% 17% 5%	1440
	21st to end	Day	40% 5% 12% 25% 15% 2	2379
January	1st to 10th	Night	57% 7% 14% 15% 6% 1	2836
	11th to 20th	Night	54% 7% 16% 17% 6% 1	2730
	21st to end	Night	61% 8% 11% 13% 7%	2970
February	1st to 10th	Night	54% 7% 14% 17% 8% 1	2475
	11th to 20th	Night	53% 7% 14% 17% 9%	2273
	21st to end	Night	49% 7% 12% 21% 10% 1	1924
March	1st to 10th	Night	53% 8% 16% 17% 6%	2151
	11th to 20th	Night	45% 7% 13% 23% 11% 1	1980
	21st to end	Night	53% 7% 14% 17% 8%	2174
April	1st to 10th	Night	40% 8% 15% 20% 16% 1	1717
	11th to 20th	Night	47% 8% 14% 18% 11% 2	1601
	21st to end	Night	46% 6% 14% 21% 11% 2	1551
May	1st to 10th	Night	44% 7% 11% 24% 13% 1	1425
	11th to 20th	Night	38% 9% 10% 27% 14% 2	1239
	21st to end	Night	46% 9% 14% 21% 9% 1	1358
June	1st to 10th	Night	47% 8% 15% 20% 9%	1216
	11th to 20th	Night	51% 11% 13% 17% 8%	1080
	21st to end	Night	37% 11% 24% 22% 5% 1	1160
July	1st to 10th	Night	31% 10% 25% 25% 7% 1	1225
	11th to 20th	Night	35% 10% 24% 25% 6%	1218
	21st to end	Night	28% 9% 27% 29% 7%	1302
August	1st to 10th	Night	31% 11% 26% 26% 5%	1285
	11th to 20th	Night	34% 9% 22% 27% 7%	1583
	21st to end	Night	33% 7% 16% 33% 10% 1	1782
September	1st to 10th	Night	36% 6% 19% 25% 10% 4	1726
	11th to 20th	Night	36% 6% 17% 30% 9% 1	1889
	21st to end	Night	33% 7% 15% 32% 11% 3	2001
October	1st to 10th	Night	41% 8% 16% 25% 9% 1	2160
	11th to 20th	Night	41% 6% 15% 28% 10%	2184
	21st to end	Night	49% 8% 13% 23% 7% 1	2685
November	1st to 10th	Night	58% 7% 12% 16% 7% 1	2590
	11th to 20th	Night	59% 8% 14% 15% 5%	2674
	21st to end	Night	54% 8% 17% 17% 4	2850
December	1st to 10th	Night	55% 8% 13% 16% 6% 2	2978
	11th to 20th	Night	61% 8% 14% 11% 6%	3751
	21st to end	Night	39% 6% 14% 22% 17% 2	5270

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	13% 4 26% 36% 19% 2	180
	11th to 20th	Day	17% 9% 21% 30% 20% 4	163
	21st to end	Day	13% 11% 34% 32% 7% 3	176
February	1st to 10th	Day	6% 11% 36% 30% 14% 3	190
	11th to 20th	Day	12% 7% 37% 25% 15% 4	240
	21st to end	Day	10% 5% 24% 36% 18% 7%	198
March	1st to 10th	Day	13% 8% 32% 32% 13% 3	352
	11th to 20th	Day	11% 4 34% 31% 15% 5%	420
	21st to end	Day	13% 4 28% 34% 17% 4	462
April	1st to 10th	Day	10% 10% 32% 32% 12% 4	420
	11th to 20th	Day	16% 8% 26% 31% 14% 4	412
	21st to end	Day	20% 7% 28% 32% 10% 2	488
May	1st to 10th	Day	12% 10% 25% 31% 16% 5%	603
	11th to 20th	Day	11% 7% 26% 32% 16% 8%	625
	21st to end	Day	16% 8% 21% 31% 18% 7%	679
June	1st to 10th	Day	18% 7% 24% 34% 13% 4	630
	11th to 20th	Day	22% 8% 24% 25% 15% 6%	630
	21st to end	Day	14% 6% 19% 29% 23% 9%	630
July	1st to 10th	Day	11% 5% 19% 33% 26% 5%	621
	11th to 20th	Day	12% 6% 23% 33% 19% 6%	618
	21st to end	Day	11% 3 22% 31% 26% 8%	684
August	1st to 10th	Day	13% 5% 15% 33% 26% 8%	626
	11th to 20th	Day	10% 7% 21% 35% 20% 7%	454
	21st to end	Day	14% 5% 19% 32% 20% 9%	495
September	1st to 10th	Day	16% 7% 32% 28% 14% 5%	450
	11th to 20th	Day	24% 8% 20% 30% 16% 3	450
	21st to end	Day	13% 13% 25% 33% 13% 3	429
October	1st to 10th	Day	16% 6% 29% 30% 15% 4	270
	11th to 20th	Day	18% 7% 31% 27% 12% 4	270
	21st to end	Day	16% 10% 33% 27% 12% 2	297
November	1st to 10th	Day	21% 7% 27% 31% 12% 2	270
	11th to 20th	Day	13% 10% 38% 28% 8% 2	263
	21st to end	Day	6% 12% 40% 29% 9% 4	180
December	1st to 10th	Day	9% 6% 29% 36% 15% 4	180
	11th to 20th	Day	11% 14% 34% 28% 14%	180
	21st to end	Day	10% 5% 27% 36% 17% 6%	198
January	1st to 10th	Night	11% 7% 33% 36% 13% 1	950
	11th to 20th	Night	11% 6% 33% 36% 12% 2	910
	21st to end	Night	15% 9% 34% 31% 8% 2	990
February	1st to 10th	Night	10% 7% 29% 36% 15% 3	743
	11th to 20th	Night	11% 5% 34% 34% 14% 2	704
	21st to end	Night	6% 2 28% 38% 19% 6%	592
March	1st to 10th	Night	11% 5% 31% 37% 14% 2	720
	11th to 20th	Night	11% 6% 31% 35% 14% 3	720
	21st to end	Night	12% 7% 26% 35% 16% 3	788
April	1st to 10th	Night	10% 6% 29% 37% 16% 2	540
	11th to 20th	Night	13% 7% 32% 35% 12% 2	533
	21st to end	Night	19% 6% 25% 37% 13% 1	540
May	1st to 10th	Night	13% 6% 29% 34% 18% 2	525
	11th to 20th	Night	12% 4 26% 34% 21% 2	354
	21st to end	Night	19% 4 21% 34% 20% 3	389
June	1st to 10th	Night	16% 6% 24% 35% 18% 2	360
	11th to 20th	Night	24% 7% 20% 27% 20% 3	360
	21st to end	Night	12% 3 19% 39% 25% 3	360
July	1st to 10th	Night	11% 2 18% 42% 25% 1	350
	11th to 20th	Night	14% 2 21% 41% 21% 1	348
	21st to end	Night	9% 4 17% 43% 24% 4	394
August	1st to 10th	Night	10% 2 16% 38% 28% 5%	397
	11th to 20th	Night	11% 4 21% 37% 25% 2	534
	21st to end	Night	10% 3 25% 36% 25% 1	594
September	1st to 10th	Night	16% 4 19% 42% 17% 2	540
	11th to 20th	Night	14% 3 23% 43% 17%	629
	21st to end	Night	9% 5% 31% 38% 16% 2	720
October	1st to 10th	Night	15% 5% 29% 35% 13% 3	720
	11th to 20th	Night	13% 4 33% 34% 14% 2	720
	21st to end	Night	16% 8% 33% 31% 11%	903
November	1st to 10th	Night	20% 5% 34% 30% 10% 1	925
	11th to 20th	Night	13% 7% 32% 33% 12% 3	950
	21st to end	Night	9% 7% 39% 34% 10% 1	950
December	1st to 10th	Night	12% 7% 32% 30% 15% 3	950
	11th to 20th	Night	13% 9% 35% 31% 11% 2	950
	21st to end	Night	9% 5% 32% 35% 15% 4	1045

Page generated at 2024-01-09 14:24:26. Version ac07

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