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 2024-11-05.

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	10% 9% 3 9% 6% 5% 5% 4 6% 8% 34%	105513
	Night	8% 9% 4 9% 6% 6% 5% 4 6% 8% 34%	102076
Transparency	Day	45% 8% 17% 22% 7%	105254
	Night	45% 8% 16% 22% 8% 1	101981
Seeing	Day	14% 7% 26% 31% 17% 5%	15615
	Night	13% 6% 29% 35% 15% 2	24663

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	6% 10% 4 19% 12% 7% 5% 3 5% 6% 21%	2219
	11th to 20th	Day	5% 8% 3 9% 8% 10% 9% 9% 10% 7% 22%	2199
	21st to end	Day	7% 14% 5% 12% 7% 5% 5% 4 5% 6% 30%	2442
February	1st to 10th	Day	7% 13% 4 14% 9% 7% 6% 5% 6% 7% 21%	1581
	11th to 20th	Day	6% 13% 5% 14% 8% 7% 6% 3 7% 6% 25%	1665
	21st to end	Day	5% 12% 5% 12% 9% 8% 7% 6% 7% 8% 22%	1413
March	1st to 10th	Day	5% 11% 4 9% 7% 7% 8% 7% 8% 9% 25%	3174
	11th to 20th	Day	4 10% 4 12% 5% 4 4 3 6% 11% 34%	3489
	21st to end	Day	7% 11% 5% 16% 7% 6% 4 3 4 5% 30%	3841
April	1st to 10th	Day	8% 13% 4 8% 7% 5% 5% 4 5% 7% 33%	2365
	11th to 20th	Day	13% 11% 4 10% 5% 5% 5% 5% 5% 7% 30%	2440
	21st to end	Day	14% 11% 3 7% 5% 4 5% 5% 7% 7% 32%	2542
May	1st to 10th	Day	16% 12% 4 10% 6% 5% 5% 3 5% 6% 28%	4456
	11th to 20th	Day	13% 12% 4 8% 6% 6% 6% 5% 6% 7% 28%	4694
	21st to end	Day	12% 9% 3 9% 6% 7% 6% 5% 7% 8% 28%	5161
June	1st to 10th	Day	15% 8% 3 8% 6% 5% 6% 4 7% 8% 30%	2893
	11th to 20th	Day	20% 10% 3 8% 5% 6% 5% 5% 7% 8% 22%	3040
	21st to end	Day	12% 7% 3 7% 5% 5% 5% 5% 8% 9% 34%	2948
July	1st to 10th	Day	8% 4 2 6% 4 5% 5% 5% 7% 9% 46%	4740
	11th to 20th	Day	8% 6% 2 6% 5% 5% 6% 5% 7% 9% 42%	4740
	21st to end	Day	8% 6% 2 5% 4 4 5% 4 7% 9% 47%	5138
August	1st to 10th	Day	14% 4 2 6% 4 4 5% 4 6% 7% 45%	4642
	11th to 20th	Day	8% 5% 2 6% 4 4 5% 4 8% 11% 44%	4058
	21st to end	Day	8% 6% 2 6% 5% 4 5% 4 6% 9% 45%	4521
September	1st to 10th	Day	11% 6% 2 6% 4 5% 5% 4 7% 8% 42%	2357
	11th to 20th	Day	16% 8% 3 6% 4 4 4 3 5% 8% 40%	2184
	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% 24%	1520
	11th to 20th	Day	7% 13% 6% 17% 7% 6% 4 4 6% 7% 23%	1505
	21st to end	Day	6% 13% 5% 14% 8% 6% 5% 4 6% 8% 26%	1330
December	1st to 10th	Day	7% 14% 4 10% 8% 7% 7% 4 7% 7% 25%	1198
	11th to 20th	Day	7% 11% 3 15% 7% 7% 6% 5% 7% 8% 24%	1439
	21st to end	Day	4 9% 4 10% 5% 4 6% 4 5% 8% 42%	2379
January	1st to 10th	Night	5% 11% 6% 15% 10% 8% 7% 6% 7% 7% 20%	4726
	11th to 20th	Night	3 8% 3 10% 8% 9% 11% 8% 8% 10% 22%	4699
	21st to end	Night	6% 13% 5% 10% 7% 6% 6% 4 6% 6% 31%	5214
February	1st to 10th	Night	6% 13% 4 12% 8% 7% 7% 4 7% 8% 24%	2613
	11th to 20th	Night	5% 11% 4 11% 8% 7% 6% 5% 7% 7% 28%	2402
	21st to end	Night	3 9% 5% 13% 7% 7% 5% 4 7% 9% 30%	2041
March	1st to 10th	Night	6% 12% 4 12% 7% 6% 6% 4 7% 8% 27%	3696
	11th to 20th	Night	4 10% 4 10% 5% 4 6% 5% 8% 10% 35%	3490
	21st to end	Night	6% 12% 4 12% 7% 7% 5% 4 6% 8% 28%	3811
April	1st to 10th	Night	7% 9% 3 8% 5% 6% 6% 5% 7% 7% 37%	1812
	11th to 20th	Night	8% 10% 4 11% 7% 6% 6% 4 7% 9% 29%	1691
	21st to end	Night	12% 12% 3 8% 5% 4 4 3 6% 8% 34%	1637
May	1st to 10th	Night	18% 12% 5% 9% 5% 5% 4 4 5% 6% 27%	2511
	11th to 20th	Night	14% 8% 3 8% 4 5% 6% 4 7% 7% 33%	2199
	21st to end	Night	11% 10% 4 10% 6% 5% 6% 5% 7% 8% 28%	2414
June	1st to 10th	Night	12% 7% 4 8% 6% 5% 6% 4 8% 8% 31%	1283
	11th to 20th	Night	19% 11% 4 7% 5% 5% 4 4 7% 7% 27%	1140
	21st to end	Night	11% 4 2 7% 5% 5% 6% 5% 7% 9% 40%	1225
July	1st to 10th	Night	8% 5% 2 5% 4 4 6% 4 7% 10% 47%	2220
	11th to 20th	Night	6% 4 1 5% 4 4 4 4 7% 8% 53%	2220
	21st to end	Night	8% 4 1 5% 4 3 4 3 7% 7% 53%	2414
August	1st to 10th	Night	12% 5% 1 6% 4 4 4 5% 6% 8% 45%	2291
	11th to 20th	Night	8% 5% 2 6% 4 4 5% 4 7% 10% 46%	2779
	21st to end	Night	8% 6% 3 6% 4 3 4 3 6% 9% 47%	3146
September	1st to 10th	Night	12% 6% 2 6% 4 3 4 4 6% 6% 47%	1822
	11th to 20th	Night	12% 6% 3 5% 4 5% 4 3 4 7% 46%	1994
	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% 7% 5% 5% 5% 5% 5% 27%	2659
	11th to 20th	Night	8% 12% 5% 16% 9% 6% 5% 4 5% 7% 25%	2674
	21st to end	Night	5% 11% 6% 15% 8% 5% 5% 3 6% 7% 29%	2850
December	1st to 10th	Night	7% 12% 5% 12% 8% 7% 7% 5% 6% 8% 25%	2978
	11th to 20th	Night	6% 13% 5% 15% 9% 8% 6% 4 6% 7% 20%	3753
	21st to end	Night	3 8% 3 7% 7% 6% 6% 4 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	63% 6% 11% 15% 5%	2219
	11th to 20th	Day	54% 8% 14% 18% 5% 1	2220
	21st to end	Day	54% 6% 13% 19% 6%	2442
February	1st to 10th	Day	58% 8% 12% 17% 6%	1581
	11th to 20th	Day	58% 7% 12% 16% 7% 1	1674
	21st to end	Day	56% 8% 11% 17% 7%	1413
March	1st to 10th	Day	49% 9% 21% 15% 6%	3174
	11th to 20th	Day	43% 8% 26% 17% 6%	3490
	21st to end	Day	53% 6% 13% 19% 8%	3841
April	1st to 10th	Day	49% 8% 14% 20% 9%	2365
	11th to 20th	Day	51% 6% 14% 19% 8% 1	2440
	21st to end	Day	48% 7% 15% 21% 8% 2	2542
May	1st to 10th	Day	55% 6% 10% 21% 7%	4456
	11th to 20th	Day	49% 9% 12% 20% 9% 1	4698
	21st to end	Day	46% 12% 17% 17% 8%	5162
June	1st to 10th	Day	48% 9% 15% 20% 8% 1	2893
	11th to 20th	Day	56% 10% 13% 16% 5% 1	3040
	21st to end	Day	42% 10% 21% 21% 6% 1	2948
July	1st to 10th	Day	32% 9% 23% 27% 8%	4666
	11th to 20th	Day	36% 9% 18% 27% 10%	4659
	21st to end	Day	32% 9% 23% 29% 7%	4976
August	1st to 10th	Day	36% 9% 19% 33% 3	4624
	11th to 20th	Day	31% 10% 24% 29% 6%	4098
	21st to end	Day	34% 8% 23% 30% 4	4520
September	1st to 10th	Day	37% 8% 19% 24% 9% 2	2357
	11th to 20th	Day	43% 6% 18% 28% 5%	2184
	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	58% 7% 12% 18% 6%	1520
	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	59% 8% 13% 14% 6%	4726
	11th to 20th	Night	53% 7% 14% 18% 6% 1	4740
	21st to end	Night	52% 7% 14% 20% 6%	5214
February	1st to 10th	Night	55% 7% 14% 16% 8%	2613
	11th to 20th	Night	51% 7% 14% 17% 11%	2403
	21st to end	Night	49% 8% 12% 21% 10% 1	2041
March	1st to 10th	Night	51% 7% 16% 18% 6%	3696
	11th to 20th	Night	40% 10% 21% 21% 7%	3490
	21st to end	Night	49% 9% 12% 21% 9%	3811
April	1st to 10th	Night	41% 9% 15% 19% 15% 1	1812
	11th to 20th	Night	48% 8% 14% 18% 11% 2	1691
	21st to end	Night	46% 7% 13% 21% 11% 2	1637
May	1st to 10th	Night	54% 7% 9% 22% 8% 1	2511
	11th to 20th	Night	43% 10% 11% 23% 12% 1	2199
	21st to end	Night	46% 13% 18% 18% 5% 1	2414
June	1st to 10th	Night	46% 9% 15% 20% 10% 1	1283
	11th to 20th	Night	51% 11% 13% 17% 9%	1140
	21st to end	Night	37% 11% 23% 22% 6% 1	1225
July	1st to 10th	Night	30% 9% 25% 21% 13% 1	2185
	11th to 20th	Night	26% 8% 18% 35% 13%	2178
	21st to end	Night	28% 8% 23% 30% 11%	2337
August	1st to 10th	Night	35% 8% 20% 35% 3	2284
	11th to 20th	Night	31% 8% 24% 29% 8%	2805
	21st to end	Night	32% 6% 23% 32% 7%	3146
September	1st to 10th	Night	35% 6% 18% 25% 12% 4	1822
	11th to 20th	Night	37% 7% 17% 29% 9% 1	1994
	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	58% 7% 12% 16% 7% 1	2659
	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	12% 4 26% 36% 19% 2	180
	11th to 20th	Day	16% 8% 21% 32% 20% 3	180
	21st to end	Day	13% 11% 31% 33% 8% 4	198
February	1st to 10th	Day	7% 10% 36% 30% 14% 3	213
	11th to 20th	Day	10% 7% 36% 25% 19% 4	270
	21st to end	Day	9% 5% 27% 36% 16% 6%	225
March	1st to 10th	Day	12% 9% 32% 31% 14% 3	389
	11th to 20th	Day	10% 5% 35% 31% 14% 5%	460
	21st to end	Day	12% 5% 28% 34% 17% 3	506
April	1st to 10th	Day	11% 11% 33% 30% 12% 4	460
	11th to 20th	Day	16% 9% 27% 30% 14% 4	452
	21st to end	Day	19% 7% 29% 32% 11% 2	532
May	1st to 10th	Day	13% 10% 26% 30% 15% 5%	653
	11th to 20th	Day	12% 8% 26% 31% 16% 8%	675
	21st to end	Day	15% 8% 21% 30% 18% 7%	734
June	1st to 10th	Day	19% 8% 25% 32% 12% 4	680
	11th to 20th	Day	22% 8% 24% 25% 15% 6%	680
	21st to end	Day	14% 6% 20% 30% 22% 9%	680
July	1st to 10th	Day	11% 5% 18% 34% 27% 6%	671
	11th to 20th	Day	12% 6% 23% 33% 20% 7%	668
	21st to end	Day	11% 3 21% 32% 25% 8%	739
August	1st to 10th	Day	13% 5% 15% 33% 25% 8%	676
	11th to 20th	Day	9% 7% 21% 35% 21% 7%	495
	21st to end	Day	13% 6% 21% 32% 19% 8%	539
September	1st to 10th	Day	14% 7% 31% 28% 14% 5%	490
	11th to 20th	Day	23% 8% 22% 29% 16% 2	490
	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	20% 6% 27% 32% 12% 2	282
	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% 32% 36% 13% 1	950
	11th to 20th	Night	11% 6% 33% 36% 12% 1	950
	21st to end	Night	15% 9% 34% 31% 9% 2	1045
February	1st to 10th	Night	10% 7% 29% 36% 15% 2	785
	11th to 20th	Night	10% 5% 34% 34% 15% 2	744
	21st to end	Night	6% 3 28% 38% 19% 6%	628
March	1st to 10th	Night	11% 5% 32% 36% 14% 2	760
	11th to 20th	Night	11% 6% 32% 35% 14% 3	760
	21st to end	Night	12% 7% 27% 36% 16% 3	831
April	1st to 10th	Night	10% 6% 30% 36% 16% 2	570
	11th to 20th	Night	13% 7% 31% 34% 12% 2	563
	21st to end	Night	19% 6% 25% 37% 13% 1	570
May	1st to 10th	Night	13% 7% 28% 34% 17% 2	554
	11th to 20th	Night	12% 5% 26% 34% 21% 2	374
	21st to end	Night	18% 5% 21% 33% 20% 3	411
June	1st to 10th	Night	15% 6% 25% 35% 17% 2	380
	11th to 20th	Night	24% 7% 21% 27% 19% 3	380
	21st to end	Night	12% 3 19% 38% 25% 3	380
July	1st to 10th	Night	11% 2 18% 43% 25% 1	370
	11th to 20th	Night	13% 2 21% 42% 21% 1	368
	21st to end	Night	9% 4 16% 43% 24% 4	416
August	1st to 10th	Night	10% 2 16% 38% 28% 5%	420
	11th to 20th	Night	10% 4 20% 38% 25% 2	564
	21st to end	Night	10% 4 26% 35% 24% 1	627
September	1st to 10th	Night	16% 4 19% 42% 17% 2	570
	11th to 20th	Night	15% 4 22% 43% 16%	664
	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	20% 5% 34% 30% 10% 1	950
	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 2024-11-03 00:11:14. Version ac07

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