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 2025-09-19.

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	9% 9% 3 9% 6% 5% 5% 4 6% 8% 35%	130224
	Night	7% 9% 4 10% 6% 6% 6% 4 6% 8% 34%	127484
Transparency	Day	45% 8% 17% 23% 7% 1	129920
	Night	46% 7% 16% 21% 9% 1	127368
Seeing	Day	13% 7% 26% 31% 17% 5%	16796
	Night	12% 6% 30% 35% 15% 2	25760

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	5% 9% 4 17% 12% 8% 6% 4 7% 6% 22%	3179
	11th to 20th	Day	4 8% 3 9% 7% 9% 8% 8% 9% 6% 28%	3159
	21st to end	Day	8% 13% 5% 12% 7% 5% 5% 4 6% 7% 28%	3498
February	1st to 10th	Day	7% 13% 5% 15% 9% 6% 6% 5% 6% 7% 22%	1665
	11th to 20th	Day	6% 12% 5% 14% 8% 7% 6% 3 7% 6% 25%	1755
	21st to end	Day	5% 11% 5% 12% 8% 7% 7% 6% 7% 8% 23%	1485
March	1st to 10th	Day	4 10% 4 10% 7% 6% 7% 6% 8% 10% 28%	4550
	11th to 20th	Day	6% 9% 4 14% 8% 6% 5% 3 6% 10% 29%	4999
	21st to end	Day	9% 14% 5% 17% 6% 5% 4 3 4 6% 27%	5502
April	1st to 10th	Day	8% 12% 4 8% 7% 5% 5% 4 5% 7% 34%	2490
	11th to 20th	Day	12% 11% 4 10% 5% 5% 5% 5% 5% 8% 30%	2570
	21st to end	Day	14% 10% 3 7% 5% 4 5% 5% 7% 7% 33%	2676
May	1st to 10th	Day	12% 9% 3 8% 5% 4 5% 4 5% 6% 38%	6379
	11th to 20th	Day	16% 11% 4 8% 6% 6% 5% 5% 6% 7% 27%	6734
	21st to end	Day	10% 8% 3 7% 5% 5% 5% 4 6% 7% 39%	7405
June	1st to 10th	Day	14% 8% 3 8% 6% 5% 6% 4 7% 9% 31%	3045
	11th to 20th	Day	20% 10% 3 8% 5% 6% 6% 5% 7% 8% 22%	3200
	21st to end	Day	13% 7% 3 7% 5% 5% 5% 5% 8% 9% 34%	3103
July	1st to 10th	Day	8% 4 2 6% 5% 5% 5% 5% 7% 9% 44%	6780
	11th to 20th	Day	11% 6% 2 6% 5% 5% 6% 5% 7% 8% 40%	6780
	21st to end	Day	8% 6% 2 6% 5% 4 5% 4 7% 9% 44%	7376
August	1st to 10th	Day	14% 4 2 6% 4 4 5% 4 6% 7% 45%	4790
	11th to 20th	Day	8% 5% 2 6% 4 4 6% 5% 8% 11% 43%	4189
	21st to end	Day	8% 5% 2 6% 5% 4 5% 4 6% 9% 46%	4664
September	1st to 10th	Day	10% 6% 2 6% 4 5% 5% 4 6% 8% 43%	2481
	11th to 20th	Day	15% 8% 3 5% 4 4 4 3 5% 8% 41%	2278
	21st to end	Day	10% 8% 2 6% 5% 3 5% 4 5% 9% 44%	2067
October	1st to 10th	Day	8% 11% 3 7% 4 4 4 4 5% 7% 41%	3170
	11th to 20th	Day	10% 7% 3 8% 5% 4 4 3 7% 10% 38%	3100
	21st to end	Day	7% 9% 4 9% 5% 5% 5% 4 7% 8% 37%	2863
November	1st to 10th	Day	11% 18% 5% 9% 7% 5% 4 3 5% 8% 25%	1568
	11th to 20th	Day	7% 14% 6% 16% 8% 6% 4 4 5% 7% 23%	1584
	21st to end	Day	6% 14% 5% 13% 8% 6% 5% 4 6% 8% 26%	1400
December	1st to 10th	Day	8% 13% 5% 11% 7% 6% 7% 5% 8% 7% 23%	2060
	11th to 20th	Day	7% 15% 5% 15% 7% 6% 6% 5% 7% 8% 18%	2259
	21st to end	Day	3 8% 4 13% 9% 6% 6% 4 5% 7% 36%	3421
January	1st to 10th	Night	4 8% 4 13% 10% 10% 9% 6% 8% 7% 20%	6766
	11th to 20th	Night	3 9% 4 10% 8% 8% 9% 6% 7% 9% 27%	6739
	21st to end	Night	7% 12% 4 11% 7% 6% 6% 4 5% 7% 32%	7458
February	1st to 10th	Night	6% 13% 4 12% 8% 7% 7% 5% 8% 8% 24%	2750
	11th to 20th	Night	5% 10% 4 11% 8% 7% 6% 5% 8% 7% 29%	2532
	21st to end	Night	3 9% 5% 13% 7% 7% 6% 4 7% 9% 30%	2145
March	1st to 10th	Night	5% 11% 4 11% 7% 6% 6% 5% 7% 9% 30%	5323
	11th to 20th	Night	4 10% 5% 12% 7% 6% 6% 5% 7% 9% 29%	5000
	21st to end	Night	9% 16% 5% 12% 6% 5% 4 3 5% 7% 28%	5472
April	1st to 10th	Night	7% 9% 3 8% 5% 6% 6% 4 7% 7% 38%	1907
	11th to 20th	Night	8% 10% 4 10% 7% 6% 6% 4 7% 8% 30%	1781
	21st to end	Night	12% 12% 3 7% 5% 4 4 3 6% 8% 35%	1723
May	1st to 10th	Night	13% 9% 4 8% 5% 5% 4 4 5% 6% 38%	3597
	11th to 20th	Night	14% 9% 3 9% 5% 5% 6% 4 7% 8% 29%	3159
	21st to end	Night	10% 9% 3 8% 6% 5% 5% 5% 6% 7% 36%	3470
June	1st to 10th	Night	12% 7% 3 8% 6% 5% 6% 4 8% 8% 32%	1350
	11th to 20th	Night	18% 11% 4 7% 5% 5% 5% 4 7% 7% 27%	1200
	21st to end	Night	11% 5% 2 7% 5% 4 5% 4 7% 9% 40%	1290
July	1st to 10th	Night	6% 4 2 4 3 4 5% 4 8% 11% 49%	3180
	11th to 20th	Night	9% 4 2 6% 5% 4 5% 4 6% 7% 48%	3180
	21st to end	Night	8% 4 2 5% 4 4 5% 4 6% 7% 50%	3467
August	1st to 10th	Night	11% 5% 2 6% 4 4 4 5% 6% 8% 45%	2363
	11th to 20th	Night	8% 5% 2 6% 4 4 5% 4 7% 10% 45%	2868
	21st to end	Night	8% 6% 3 6% 4 4 4 3 6% 9% 47%	3245
September	1st to 10th	Night	11% 5% 2 6% 4 3 4 3 6% 6% 49%	1918
	11th to 20th	Night	11% 6% 3 5% 4 5% 4 3 4 8% 47%	2077
	21st to end	Night	7% 6% 3 6% 4 4 4 4 6% 9% 47%	2113
October	1st to 10th	Night	8% 8% 3 7% 4 4 5% 4 5% 8% 43%	3800
	11th to 20th	Night	6% 8% 4 7% 4 4 4 4 6% 9% 46%	3826
	21st to end	Night	7% 10% 4 10% 5% 5% 5% 4 6% 9% 35%	4663
November	1st to 10th	Night	14% 13% 5% 9% 6% 5% 5% 5% 5% 5% 28%	2730
	11th to 20th	Night	7% 12% 5% 15% 9% 6% 5% 4 5% 7% 24%	2815
	21st to end	Night	5% 12% 6% 15% 8% 5% 5% 3 6% 7% 28%	3000
December	1st to 10th	Night	8% 14% 5% 15% 8% 7% 7% 5% 5% 7% 19%	5116
	11th to 20th	Night	6% 15% 6% 15% 8% 7% 5% 4 7% 7% 19%	5933
	21st to end	Night	2 7% 3 11% 9% 7% 5% 4 5% 6% 40%	7528

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	60% 6% 9% 19% 5%	3179
	11th to 20th	Day	50% 7% 16% 16% 11%	3180
	21st to end	Day	54% 6% 18% 16% 5%	3498
February	1st to 10th	Day	58% 7% 11% 16% 7%	1665
	11th to 20th	Day	57% 7% 12% 16% 7% 1	1764
	21st to end	Day	55% 8% 12% 17% 7%	1485
March	1st to 10th	Day	46% 7% 22% 19% 6%	4550
	11th to 20th	Day	50% 6% 20% 18% 6%	5000
	21st to end	Day	56% 5% 10% 20% 8%	5502
April	1st to 10th	Day	48% 8% 14% 21% 10%	2490
	11th to 20th	Day	50% 6% 14% 20% 8% 2	2570
	21st to end	Day	48% 7% 14% 21% 8% 1	2676
May	1st to 10th	Day	45% 6% 10% 23% 14% 3	6379
	11th to 20th	Day	51% 8% 12% 20% 9%	6738
	21st to end	Day	39% 10% 16% 22% 11% 2	7406
June	1st to 10th	Day	47% 9% 14% 21% 9% 1	3045
	11th to 20th	Day	56% 10% 13% 16% 4 1	3200
	21st to end	Day	43% 10% 20% 21% 6%	3103
July	1st to 10th	Day	32% 10% 24% 27% 7%	6706
	11th to 20th	Day	38% 8% 15% 30% 9%	6699
	21st to end	Day	34% 9% 23% 29% 6%	7169
August	1st to 10th	Day	36% 9% 19% 32% 4	4772
	11th to 20th	Day	32% 10% 24% 28% 6%	4229
	21st to end	Day	33% 8% 23% 30% 5% 1	4663
September	1st to 10th	Day	37% 8% 18% 26% 9% 2	2481
	11th to 20th	Day	42% 6% 18% 28% 6%	2278
	21st to end	Day	37% 8% 17% 27% 9% 2	2067
October	1st to 10th	Day	41% 6% 22% 26% 5%	3170
	11th to 20th	Day	41% 5% 15% 32% 7%	3100
	21st to end	Day	43% 7% 21% 24% 4	2863
November	1st to 10th	Day	57% 7% 12% 18% 6%	1568
	11th to 20th	Day	59% 10% 15% 13% 4	1584
	21st to end	Day	55% 10% 15% 17% 4	1400
December	1st to 10th	Day	56% 10% 14% 14% 5% 1	2060
	11th to 20th	Day	62% 7% 14% 15% 3	2260
	21st to end	Day	47% 5% 10% 25% 12% 1	3421
January	1st to 10th	Night	58% 7% 14% 14% 7%	6766
	11th to 20th	Night	51% 6% 13% 17% 12% 1	6780
	21st to end	Night	51% 7% 18% 20% 4	7458
February	1st to 10th	Night	55% 6% 14% 16% 9%	2750
	11th to 20th	Night	50% 7% 14% 18% 11%	2533
	21st to end	Night	48% 8% 13% 21% 10% 1	2145
March	1st to 10th	Night	48% 7% 20% 18% 8%	5323
	11th to 20th	Night	47% 9% 17% 21% 6%	5000
	21st to end	Night	54% 7% 10% 18% 11%	5472
April	1st to 10th	Night	41% 9% 14% 20% 15% 1	1907
	11th to 20th	Night	47% 8% 14% 18% 12% 2	1781
	21st to end	Night	45% 7% 13% 22% 11% 2	1723
May	1st to 10th	Night	45% 6% 8% 24% 16% 2	3597
	11th to 20th	Night	48% 9% 12% 20% 10% 1	3159
	21st to end	Night	41% 11% 17% 21% 10%	3470
June	1st to 10th	Night	45% 9% 15% 20% 11% 1	1350
	11th to 20th	Night	51% 11% 14% 17% 8%	1200
	21st to end	Night	37% 11% 23% 22% 6% 1	1290
July	1st to 10th	Night	26% 9% 28% 27% 10%	3145
	11th to 20th	Night	33% 6% 15% 33% 12%	3138
	21st to end	Night	31% 8% 22% 30% 9%	3369
August	1st to 10th	Night	35% 8% 20% 34% 3	2356
	11th to 20th	Night	32% 8% 24% 28% 8%	2894
	21st to end	Night	32% 6% 22% 32% 8%	3245
September	1st to 10th	Night	34% 6% 18% 27% 12% 4	1918
	11th to 20th	Night	37% 6% 17% 30% 9% 1	2077
	21st to end	Night	33% 7% 15% 31% 12% 3	2113
October	1st to 10th	Night	37% 7% 22% 29% 6%	3800
	11th to 20th	Night	35% 5% 15% 36% 9%	3826
	21st to end	Night	45% 6% 21% 23% 4	4663
November	1st to 10th	Night	57% 7% 13% 17% 6% 1	2730
	11th to 20th	Night	59% 8% 13% 15% 5%	2815
	21st to end	Night	55% 7% 16% 17% 4	3000
December	1st to 10th	Night	63% 8% 14% 10% 4 1	5116
	11th to 20th	Night	63% 7% 15% 12% 4	5931
	21st to end	Night	44% 6% 13% 22% 14% 2	7528

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	12% 5% 28% 35% 20% 2	200
	11th to 20th	Day	15% 8% 24% 33% 18% 3	200
	21st to end	Day	14% 11% 34% 30% 7% 4	220
February	1st to 10th	Day	7% 10% 35% 30% 15% 4	237
	11th to 20th	Day	9% 6% 34% 29% 18% 4	300
	21st to end	Day	8% 7% 30% 35% 15% 6%	249
March	1st to 10th	Day	12% 8% 33% 31% 14% 2	425
	11th to 20th	Day	10% 5% 35% 31% 14% 5%	500
	21st to end	Day	13% 6% 29% 33% 17% 3	550
April	1st to 10th	Day	10% 10% 33% 32% 12% 4	500
	11th to 20th	Day	16% 10% 29% 29% 13% 3	492
	21st to end	Day	18% 7% 28% 33% 11% 3	576
May	1st to 10th	Day	12% 11% 26% 30% 15% 5%	703
	11th to 20th	Day	13% 7% 27% 30% 16% 7%	725
	21st to end	Day	15% 8% 22% 30% 18% 7%	789
June	1st to 10th	Day	18% 9% 27% 31% 12% 4	730
	11th to 20th	Day	22% 8% 25% 25% 15% 6%	730
	21st to end	Day	14% 6% 21% 28% 22% 9%	730
July	1st to 10th	Day	11% 5% 19% 33% 26% 6%	721
	11th to 20th	Day	12% 6% 23% 32% 20% 8%	718
	21st to end	Day	11% 4 21% 32% 25% 8%	794
August	1st to 10th	Day	13% 5% 16% 33% 25% 9%	726
	11th to 20th	Day	9% 8% 22% 35% 20% 6%	536
	21st to end	Day	12% 7% 21% 32% 20% 9%	583
September	1st to 10th	Day	14% 8% 29% 28% 16% 6%	530
	11th to 20th	Day	22% 7% 21% 29% 17% 4	523
	21st to end	Day	12% 13% 27% 32% 13% 3	467
October	1st to 10th	Day	15% 7% 30% 30% 15% 4	300
	11th to 20th	Day	18% 8% 33% 27% 11% 4	300
	21st to end	Day	16% 10% 35% 26% 12% 2	330
November	1st to 10th	Day	19% 7% 29% 32% 11% 2	300
	11th to 20th	Day	13% 9% 39% 28% 9% 2	292
	21st to end	Day	7% 12% 39% 29% 10% 4	200
December	1st to 10th	Day	10% 7% 31% 36% 14% 4	200
	11th to 20th	Day	12% 13% 36% 28% 13%	200
	21st to end	Day	9% 4 27% 37% 17% 6%	220
January	1st to 10th	Night	11% 7% 33% 36% 13% 1	1000
	11th to 20th	Night	11% 7% 34% 35% 12% 2	1000
	21st to end	Night	15% 10% 35% 30% 9% 2	1100
February	1st to 10th	Night	10% 7% 29% 37% 15% 2	826
	11th to 20th	Night	10% 5% 33% 35% 15% 2	784
	21st to end	Night	6% 4 30% 37% 18% 5%	660
March	1st to 10th	Night	11% 5% 32% 37% 14% 2	800
	11th to 20th	Night	10% 6% 32% 36% 14% 3	800
	21st to end	Night	12% 7% 27% 35% 15% 3	875
April	1st to 10th	Night	10% 6% 30% 37% 15% 2	600
	11th to 20th	Night	12% 8% 33% 34% 11% 2	593
	21st to end	Night	18% 6% 25% 38% 14% 1	600
May	1st to 10th	Night	13% 7% 28% 34% 16% 2	583
	11th to 20th	Night	13% 6% 26% 33% 21% 2	394
	21st to end	Night	18% 4 21% 34% 20% 3	433
June	1st to 10th	Night	15% 8% 25% 34% 16% 2	400
	11th to 20th	Night	23% 6% 21% 28% 20% 3	400
	21st to end	Night	13% 4 19% 37% 25% 3	400
July	1st to 10th	Night	11% 2 19% 44% 24% 1	390
	11th to 20th	Night	13% 2 20% 41% 22% 1	388
	21st to end	Night	9% 4 16% 44% 23% 4	438
August	1st to 10th	Night	10% 2 16% 38% 29% 5%	442
	11th to 20th	Night	11% 5% 21% 38% 24% 2	594
	21st to end	Night	9% 4 25% 36% 24% 2	660
September	1st to 10th	Night	15% 5% 18% 44% 17% 2	600
	11th to 20th	Night	15% 4 22% 43% 17%	691
	21st to end	Night	10% 5% 32% 36% 15% 2	760
October	1st to 10th	Night	15% 5% 30% 35% 13% 2	760
	11th to 20th	Night	13% 4 33% 35% 13% 2	760
	21st to end	Night	16% 8% 34% 30% 11%	954
November	1st to 10th	Night	19% 5% 35% 29% 10% 1	975
	11th to 20th	Night	12% 8% 34% 32% 12% 3	1000
	21st to end	Night	9% 7% 38% 34% 11% 1	1000
December	1st to 10th	Night	12% 7% 33% 30% 14% 3	1000
	11th to 20th	Night	13% 8% 36% 31% 10% 2	1000
	21st to end	Night	9% 4 32% 36% 14% 4	1100

Page generated at 2025-09-15 23:49:11. Version ac07

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