Miramichi City (Newcastle)
Clear Sky Chart
History

This sumarizes the distribution of each different forecast outcome for the Miramichi City (Newcastle) clear sky chart from 2005-11-06 to 2026-06-16.

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	18% 10% 3 8% 5% 4 4 4 5% 6% 32%	137764
	Night	18% 10% 3 7% 5% 4 4 3 5% 6% 34%	134445
Transparency	Day	51% 6% 12% 19% 11% 1	141255
	Night	50% 6% 12% 20% 11% 1	139044
Seeing	Day	27% 18% 31% 18% 6% 1	18642
	Night	25% 16% 33% 21% 6%	26348

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	14% 16% 5% 11% 6% 5% 4 4 4 5% 27%	4093
	11th to 20th	Day	14% 15% 6% 12% 6% 5% 5% 3 4 5% 25%	4233
	21st to end	Day	5% 10% 3 7% 5% 5% 5% 4 6% 8% 40%	5573
February	1st to 10th	Day	12% 12% 4 9% 6% 4 5% 4 6% 5% 34%	1890
	11th to 20th	Day	15% 12% 4 9% 7% 5% 4 3 5% 6% 30%	1843
	21st to end	Day	11% 13% 4 9% 6% 5% 6% 4 3 6% 34%	1606
March	1st to 10th	Day	21% 13% 3 9% 4 4 4 3 4 6% 29%	4896
	11th to 20th	Day	18% 16% 4 10% 5% 5% 4 3 4 5% 25%	5090
	21st to end	Day	26% 13% 3 8% 4 4 4 3 5% 6% 25%	5587
April	1st to 10th	Day	22% 12% 4 8% 5% 5% 3 3 5% 6% 28%	2474
	11th to 20th	Day	22% 10% 3 7% 4 4 3 2 5% 5% 34%	2702
	21st to end	Day	26% 10% 3 6% 4 4 4 3 5% 5% 30%	2730
May	1st to 10th	Day	27% 12% 3 8% 6% 4 4 3 4 5% 25%	7793
	11th to 20th	Day	21% 10% 3 7% 4 4 4 3 5% 6% 32%	8220
	21st to end	Day	23% 9% 3 8% 4 4 4 4 5% 6% 29%	9359
June	1st to 10th	Day	25% 8% 3 7% 5% 4 4 4 6% 7% 28%	3150
	11th to 20th	Day	20% 7% 2 7% 5% 5% 5% 4 5% 7% 33%	3075
	21st to end	Day	28% 8% 3 7% 5% 4 4 3 6% 6% 26%	3000
July	1st to 10th	Day	15% 7% 3 9% 6% 6% 6% 5% 7% 9% 28%	6820
	11th to 20th	Day	13% 6% 2 6% 5% 5% 5% 4 6% 8% 38%	6820
	21st to end	Day	12% 6% 3 7% 5% 5% 5% 4 7% 8% 39%	6911
August	1st to 10th	Day	16% 7% 2 6% 5% 5% 6% 5% 6% 7% 33%	4235
	11th to 20th	Day	13% 6% 3 7% 6% 5% 5% 5% 7% 8% 35%	4175
	21st to end	Day	16% 5% 2 5% 3 4 4 3 6% 8% 44%	4652
September	1st to 10th	Day	15% 5% 3 8% 4 4 4 3 5% 8% 40%	2400
	11th to 20th	Day	17% 7% 3 6% 4 3 4 3 4 4 45%	2238
	21st to end	Day	19% 6% 2 5% 4 4 4 3 5% 6% 42%	2193
October	1st to 10th	Day	15% 7% 2 6% 4 4 4 3 4 7% 43%	2000
	11th to 20th	Day	20% 8% 3 7% 4 3 4 4 5% 6% 36%	2000
	21st to end	Day	24% 9% 2 7% 5% 4 4 4 4 6% 32%	2093
November	1st to 10th	Day	20% 10% 2 6% 5% 4 5% 4 5% 6% 32%	1685
	11th to 20th	Day	20% 11% 4 6% 5% 4 4 3 5% 6% 32%	1680
	21st to end	Day	21% 11% 3 7% 5% 4 4 3 4 6% 31%	1680
December	1st to 10th	Day	17% 12% 3 6% 5% 5% 4 4 5% 6% 34%	2627
	11th to 20th	Day	20% 11% 3 8% 4 4 4 3 4 6% 33%	2688
	21st to end	Day	16% 12% 5% 8% 4 5% 4 3 3 4 36%	3553
January	1st to 10th	Night	13% 15% 4 9% 5% 5% 4 4 5% 6% 30%	8831
	11th to 20th	Night	18% 14% 6% 9% 6% 5% 5% 3 4 5% 26%	8669
	21st to end	Night	6% 10% 4 9% 4 4 4 3 6% 7% 44%	8605
February	1st to 10th	Night	13% 12% 4 8% 5% 4 5% 4 6% 5% 34%	2730
	11th to 20th	Night	16% 13% 5% 7% 5% 6% 4 3 5% 5% 30%	2663
	21st to end	Night	14% 14% 3 6% 6% 5% 4 4 5% 5% 35%	2197
March	1st to 10th	Night	22% 13% 4 9% 6% 5% 4 4 4 3 27%	5163
	11th to 20th	Night	23% 13% 4 9% 5% 4 4 3 5% 5% 24%	5089
	21st to end	Night	29% 11% 3 7% 4 4 4 2 4 5% 26%	5587
April	1st to 10th	Night	25% 11% 3 7% 5% 4 4 4 4 5% 28%	2140
	11th to 20th	Night	23% 10% 3 7% 4 4 4 3 5% 5% 33%	1868
	21st to end	Night	23% 11% 4 6% 4 4 4 4 3 6% 32%	1890
May	1st to 10th	Night	25% 12% 3 7% 5% 4 4 3 5% 6% 26%	5099
	11th to 20th	Night	23% 8% 3 7% 5% 4 3 3 5% 5% 33%	4670
	21st to end	Night	20% 10% 3 8% 4 4 4 3 5% 5% 34%	4889
June	1st to 10th	Night	26% 8% 3 7% 5% 5% 3 3 4 6% 33%	1470
	11th to 20th	Night	19% 6% 2 6% 5% 4 4 5% 6% 6% 36%	1435
	21st to end	Night	28% 8% 3 7% 5% 3 4 4 4 6% 28%	1400
July	1st to 10th	Night	17% 7% 3 7% 5% 5% 5% 5% 6% 7% 33%	3160
	11th to 20th	Night	15% 7% 2 5% 5% 4 5% 4 6% 7% 39%	3160
	21st to end	Night	9% 5% 3 7% 5% 4 5% 5% 6% 8% 43%	3890
August	1st to 10th	Night	16% 6% 3 8% 6% 5% 6% 5% 6% 7% 32%	2915
	11th to 20th	Night	12% 8% 3 8% 5% 4 5% 5% 6% 7% 37%	2872
	21st to end	Night	14% 5% 2 6% 4 4 4 4 5% 7% 46%	3245
September	1st to 10th	Night	17% 5% 2 6% 3 3 3 3 4 7% 47%	2000
	11th to 20th	Night	14% 6% 2 5% 4 3 3 3 5% 6% 49%	2159
	21st to end	Night	19% 5% 2 6% 4 4 3 3 4 6% 45%	2206
October	1st to 10th	Night	18% 6% 2 5% 4 3 5% 3 5% 5% 44%	2400
	11th to 20th	Night	19% 8% 3 6% 4 4 4 3 4 7% 39%	2400
	21st to end	Night	22% 9% 3 6% 5% 4 4 3 4 6% 35%	2745
November	1st to 10th	Night	20% 10% 3 6% 4 4 4 3 5% 5% 35%	2832
	11th to 20th	Night	22% 10% 4 6% 5% 5% 4 3 6% 6% 30%	2940
	21st to end	Night	22% 9% 3 8% 4 4 4 4 5% 5% 31%	2940
December	1st to 10th	Night	15% 10% 3 7% 5% 3 4 4 5% 6% 38%	4778
	11th to 20th	Night	22% 10% 3 6% 4 3 4 3 5% 6% 35%	5741
	21st to end	Night	19% 12% 4 10% 5% 4 4 3 4 5% 31%	7667

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% 5% 10% 12% 12%	4094
	11th to 20th	Day	61% 6% 11% 12% 10%	4259
	21st to end	Day	41% 6% 11% 21% 19% 1	5573
February	1st to 10th	Day	51% 7% 10% 19% 12% 2	1890
	11th to 20th	Day	55% 4 10% 19% 10% 1	1851
	21st to end	Day	52% 4 8% 21% 12% 2	1606
March	1st to 10th	Day	57% 6% 9% 14% 11% 2	4900
	11th to 20th	Day	60% 6% 12% 14% 5% 2	5090
	21st to end	Day	60% 4 5% 18% 11% 2	5587
April	1st to 10th	Day	58% 4 8% 16% 12% 3	2474
	11th to 20th	Day	52% 5% 9% 21% 12% 2	2702
	21st to end	Day	55% 5% 8% 15% 12% 4	2730
May	1st to 10th	Day	61% 5% 9% 14% 11%	7805
	11th to 20th	Day	51% 6% 13% 20% 8% 1	8224
	21st to end	Day	53% 7% 9% 16% 12% 2	9360
June	1st to 10th	Day	56% 6% 11% 18% 8% 1	3150
	11th to 20th	Day	49% 7% 12% 20% 11% 2	3075
	21st to end	Day	58% 6% 11% 16% 9% 1	3000
July	1st to 10th	Day	49% 8% 16% 18% 8%	6745
	11th to 20th	Day	41% 7% 16% 28% 8%	6739
	21st to end	Day	41% 8% 16% 28% 7%	6713
August	1st to 10th	Day	47% 8% 14% 21% 9%	4222
	11th to 20th	Day	44% 9% 15% 24% 8%	4214
	21st to end	Day	38% 7% 14% 24% 17%	4652
September	1st to 10th	Day	40% 7% 13% 25% 13%	2400
	11th to 20th	Day	42% 5% 12% 25% 15% 1	2238
	21st to end	Day	42% 6% 11% 26% 14% 1	2193
October	1st to 10th	Day	41% 6% 17% 26% 10% 1	3260
	11th to 20th	Day	46% 7% 12% 26% 9%	3240
	21st to end	Day	42% 6% 17% 20% 15%	3356
November	1st to 10th	Day	51% 5% 12% 22% 8% 1	1685
	11th to 20th	Day	53% 5% 14% 15% 12% 2	1680
	21st to end	Day	55% 5% 14% 18% 8%	1680
December	1st to 10th	Day	51% 5% 15% 21% 8%	2627
	11th to 20th	Day	54% 4 11% 18% 11% 2	2688
	21st to end	Day	54% 6% 10% 16% 12% 3	3553
January	1st to 10th	Night	54% 5% 13% 20% 7%	8831
	11th to 20th	Night	59% 7% 10% 16% 8%	8718
	21st to end	Night	39% 5% 11% 23% 18% 3	8605
February	1st to 10th	Night	50% 6% 12% 17% 13% 2	2730
	11th to 20th	Night	56% 5% 10% 16% 11% 1	2666
	21st to end	Night	51% 4 8% 20% 14% 2	2197
March	1st to 10th	Night	61% 6% 6% 12% 12% 2	5172
	11th to 20th	Night	60% 6% 12% 12% 9% 1	5090
	21st to end	Night	60% 4 5% 16% 13% 2	5587
April	1st to 10th	Night	58% 5% 8% 16% 11% 3	2140
	11th to 20th	Night	52% 5% 9% 19% 13% 2	1868
	21st to end	Night	55% 5% 9% 15% 14% 3	1890
May	1st to 10th	Night	58% 5% 11% 15% 10% 1	5105
	11th to 20th	Night	52% 6% 11% 21% 9% 1	4671
	21st to end	Night	50% 8% 12% 15% 14% 1	4890
June	1st to 10th	Night	54% 4 11% 21% 9% 1	1470
	11th to 20th	Night	47% 7% 11% 24% 8% 2	1435
	21st to end	Night	57% 8% 10% 17% 8% 1	1400
July	1st to 10th	Night	49% 7% 16% 18% 10%	3125
	11th to 20th	Night	43% 7% 18% 28% 4	3118
	21st to end	Night	37% 9% 18% 25% 10%	3775
August	1st to 10th	Night	50% 9% 13% 21% 7%	2903
	11th to 20th	Night	41% 9% 19% 24% 7%	2899
	21st to end	Night	36% 8% 17% 24% 14% 1	3244
September	1st to 10th	Night	38% 6% 12% 31% 12% 1	2000
	11th to 20th	Night	36% 6% 15% 29% 13% 1	2159
	21st to end	Night	41% 6% 11% 27% 14% 1	2206
October	1st to 10th	Night	45% 6% 14% 25% 10% 1	3920
	11th to 20th	Night	44% 5% 11% 30% 10%	3899
	21st to end	Night	43% 5% 17% 23% 13%	4432
November	1st to 10th	Night	51% 5% 12% 21% 9% 1	2832
	11th to 20th	Night	54% 6% 12% 18% 9% 1	2940
	21st to end	Night	55% 6% 14% 17% 8%	2940
December	1st to 10th	Night	46% 5% 13% 26% 10%	4778
	11th to 20th	Night	49% 5% 10% 22% 13% 1	5742
	21st to end	Night	55% 6% 10% 18% 10% 1	7667

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	30% 22% 32% 14% 2	220
	11th to 20th	Day	38% 20% 24% 12% 6% 1	220
	21st to end	Day	19% 21% 35% 19% 5% 1	395
February	1st to 10th	Day	26% 20% 28% 17% 6% 3	430
	11th to 20th	Day	23% 23% 33% 14% 5%	426
	21st to end	Day	23% 22% 34% 18% 3	382
March	1st to 10th	Day	32% 22% 30% 12% 3 1	540
	11th to 20th	Day	31% 21% 29% 13% 5% 1	540
	21st to end	Day	34% 21% 27% 14% 3 1	594
April	1st to 10th	Day	37% 22% 29% 10% 2 1	540
	11th to 20th	Day	35% 23% 24% 14% 3 1	532
	21st to end	Day	34% 18% 26% 15% 5% 2	540
May	1st to 10th	Day	37% 20% 25% 13% 5% 1	595
	11th to 20th	Day	29% 18% 28% 16% 7% 1	774
	21st to end	Day	29% 18% 33% 16% 5%	845
June	1st to 10th	Day	31% 17% 29% 15% 7% 1	780
	11th to 20th	Day	24% 18% 31% 20% 6% 1	755
	21st to end	Day	30% 15% 29% 21% 5%	730
July	1st to 10th	Day	20% 15% 37% 19% 9% 1	720
	11th to 20th	Day	15% 12% 41% 24% 7% 1	718
	21st to end	Day	16% 13% 38% 24% 8% 1	711
August	1st to 10th	Day	14% 12% 40% 24% 8% 2	526
	11th to 20th	Day	18% 12% 29% 30% 10% 1	519
	21st to end	Day	18% 14% 31% 26% 10% 2	583
September	1st to 10th	Day	18% 14% 36% 22% 8% 2	530
	11th to 20th	Day	21% 14% 34% 21% 7% 3	530
	21st to end	Day	21% 15% 35% 18% 7% 3	525
October	1st to 10th	Day	20% 15% 28% 24% 11% 2	420
	11th to 20th	Day	30% 15% 27% 17% 9% 2	420
	21st to end	Day	30% 21% 29% 13% 6% 1	462
November	1st to 10th	Day	31% 18% 31% 15% 4 1	425
	11th to 20th	Day	30% 21% 27% 14% 6% 1	430
	21st to end	Day	33% 20% 29% 13% 3	430
December	1st to 10th	Day	29% 18% 31% 17% 4 1	393
	11th to 20th	Day	36% 22% 30% 9% 2	220
	21st to end	Day	30% 19% 32% 15% 4	242
January	1st to 10th	Night	23% 19% 35% 18% 4	950
	11th to 20th	Night	26% 18% 31% 19% 5%	920
	21st to end	Night	18% 20% 36% 21% 4	924
February	1st to 10th	Night	21% 19% 35% 18% 6%	840
	11th to 20th	Night	27% 19% 35% 15% 3	823
	21st to end	Night	23% 16% 37% 20% 4	692
March	1st to 10th	Night	28% 17% 35% 18% 2	840
	11th to 20th	Night	26% 18% 32% 18% 5% 1	840
	21st to end	Night	24% 18% 35% 17% 5%	924
April	1st to 10th	Night	33% 17% 31% 18% 2	691
	11th to 20th	Night	30% 13% 36% 15% 6%	624
	21st to end	Night	32% 15% 27% 21% 4	630
May	1st to 10th	Night	30% 17% 28% 21% 4	630
	11th to 20th	Night	27% 13% 32% 20% 7%	622
	21st to end	Night	19% 19% 36% 21% 4	593
June	1st to 10th	Night	29% 9% 30% 26% 6%	420
	11th to 20th	Night	22% 13% 30% 27% 9%	410
	21st to end	Night	31% 7% 29% 26% 7%	400
July	1st to 10th	Night	18% 10% 42% 22% 7%	390
	11th to 20th	Night	17% 5% 35% 33% 9%	388
	21st to end	Night	16% 11% 32% 32% 8%	555
August	1st to 10th	Night	16% 7% 36% 31% 10%	598
	11th to 20th	Night	16% 7% 31% 36% 9% 1	592
	21st to end	Night	16% 11% 29% 31% 12% 1	660
September	1st to 10th	Night	20% 9% 38% 26% 7%	600
	11th to 20th	Night	18% 11% 32% 28% 10% 1	759
	21st to end	Night	21% 13% 33% 22% 10%	800
October	1st to 10th	Night	22% 12% 33% 23% 9% 1	800
	11th to 20th	Night	22% 14% 35% 21% 8%	800
	21st to end	Night	26% 21% 32% 18% 4	880
November	1st to 10th	Night	29% 16% 32% 18% 4	908
	11th to 20th	Night	30% 17% 30% 16% 6% 1	950
	21st to end	Night	30% 18% 28% 19% 5% 1	950
December	1st to 10th	Night	29% 16% 36% 16% 3	950
	11th to 20th	Night	28% 21% 33% 14% 3	950
	21st to end	Night	28% 20% 29% 18% 4 1	1045

Page generated at 2026-06-13 03:31:42. Version ac07

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