Hodges and North Wildlife Area
Clear Sky Chart
History

This sumarizes the distribution of each different forecast outcome for the Hodges and North Wildlife Area clear sky chart from 2005-11-06 to 2026-05-02.

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	13% 8% 3 8% 5% 4 4 4 6% 7% 38%	132200
	Night	12% 9% 3 8% 5% 4 4 3 5% 6% 40%	130606
Transparency	Day	44% 6% 13% 24% 13% 1	135766
	Night	43% 5% 12% 24% 14% 2	135117
Seeing	Day	16% 10% 30% 27% 14% 4	17849
	Night	16% 9% 32% 31% 11% 1	27833

By Month

Percentage Cloud Cover SE (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	7% 13% 7% 21% 8% 7% 5% 3 4 5% 21%	4691
	11th to 20th	Day	6% 9% 5% 12% 9% 8% 7% 6% 7% 5% 25%	4888
	21st to end	Day	8% 12% 5% 12% 7% 6% 6% 4 6% 6% 29%	5812
February	1st to 10th	Day	10% 12% 5% 11% 7% 6% 4 5% 5% 7% 28%	1890
	11th to 20th	Day	12% 11% 5% 8% 4 6% 5% 4 6% 6% 34%	1844
	21st to end	Day	14% 10% 3 8% 6% 4 5% 4 5% 7% 34%	1725
March	1st to 10th	Day	16% 8% 3 7% 3 3 3 2 4 5% 45%	4833
	11th to 20th	Day	11% 6% 2 6% 4 4 4 3 5% 9% 45%	5090
	21st to end	Day	21% 13% 4 10% 4 4 4 3 5% 6% 26%	5740
April	1st to 10th	Day	19% 12% 3 8% 4 4 4 4 5% 6% 31%	2520
	11th to 20th	Day	17% 10% 3 8% 5% 5% 4 4 5% 7% 31%	2494
	21st to end	Day	21% 8% 3 7% 4 4 4 4 5% 6% 33%	2576
May	1st to 10th	Day	15% 7% 2 6% 5% 4 5% 4 6% 7% 37%	6096
	11th to 20th	Day	15% 6% 2 5% 3 3 3 3 5% 7% 47%	6319
	21st to end	Day	16% 6% 2 7% 4 5% 4 4 6% 8% 37%	6935
June	1st to 10th	Day	11% 5% 2 5% 5% 5% 5% 4 6% 8% 44%	2800
	11th to 20th	Day	12% 6% 2 6% 5% 4 5% 4 6% 8% 44%	2800
	21st to end	Day	12% 6% 3 6% 5% 4 5% 4 7% 9% 39%	2800
July	1st to 10th	Day	9% 6% 2 7% 5% 5% 6% 5% 7% 9% 39%	6360
	11th to 20th	Day	9% 6% 2 6% 4 4 4 3 6% 8% 48%	6360
	21st to end	Day	9% 6% 3 7% 5% 5% 5% 4 7% 9% 40%	6749
August	1st to 10th	Day	9% 5% 2 6% 4 5% 4 5% 7% 9% 44%	4234
	11th to 20th	Day	11% 6% 2 6% 5% 4 5% 5% 6% 10% 40%	4147
	21st to end	Day	8% 4 2 6% 4 4 4 4 6% 8% 48%	4312
September	1st to 10th	Day	13% 4 2 5% 3 4 4 3 4 7% 51%	2400
	11th to 20th	Day	11% 4 2 5% 4 4 5% 5% 5% 7% 49%	2400
	21st to end	Day	12% 5% 2 6% 5% 4 3 4 5% 7% 47%	2104
October	1st to 10th	Day	14% 7% 2 5% 4 3 3 3 5% 6% 48%	2000
	11th to 20th	Day	17% 8% 2 6% 4 4 4 3 5% 7% 40%	2000
	21st to end	Day	16% 9% 4 6% 4 3 4 3 5% 6% 41%	2176
November	1st to 10th	Day	13% 7% 2 6% 4 4 3 4 5% 7% 45%	1852
	11th to 20th	Day	14% 12% 4 8% 5% 4 4 3 5% 6% 34%	1725
	21st to end	Day	14% 11% 4 8% 4 4 4 4 5% 6% 36%	1680
December	1st to 10th	Day	7% 9% 3 10% 4 4 5% 3 7% 8% 40%	2690
	11th to 20th	Day	14% 13% 5% 13% 8% 5% 5% 3 5% 5% 24%	3088
	21st to end	Day	21% 22% 8% 14% 4 3 3 3 2 4 15%	4070
January	1st to 10th	Night	8% 12% 7% 17% 6% 5% 4 3 4 6% 28%	8232
	11th to 20th	Night	8% 11% 4 12% 8% 6% 6% 5% 7% 6% 26%	8100
	21st to end	Night	9% 11% 5% 11% 5% 5% 4 3 5% 6% 35%	8402
February	1st to 10th	Night	11% 11% 5% 11% 7% 4 5% 3 4 6% 33%	2730
	11th to 20th	Night	10% 10% 4 8% 5% 5% 4 3 4 6% 40%	2663
	21st to end	Night	13% 9% 3 8% 6% 5% 4 3 4 6% 39%	2079
March	1st to 10th	Night	16% 8% 3 6% 3 3 2 2 4 5% 49%	5269
	11th to 20th	Night	10% 7% 2 6% 3 3 3 3 5% 8% 49%	5090
	21st to end	Night	22% 11% 4 10% 5% 4 4 3 4 5% 28%	5430
April	1st to 10th	Night	17% 9% 3 7% 4 4 3 3 4 6% 39%	2100
	11th to 20th	Night	16% 9% 2 6% 5% 4 4 4 5% 6% 40%	2075
	21st to end	Night	18% 8% 2 6% 5% 4 3 3 5% 6% 39%	2041
May	1st to 10th	Night	15% 6% 2 6% 3 3 4 3 5% 7% 44%	3842
	11th to 20th	Night	10% 6% 2 6% 4 4 4 3 5% 6% 49%	3596
	21st to end	Night	15% 8% 2 6% 4 4 4 4 4 6% 42%	3942
June	1st to 10th	Night	8% 5% 2 6% 4 4 5% 4 7% 8% 48%	1600
	11th to 20th	Night	9% 6% 2 5% 5% 5% 5% 4 8% 9% 43%	1600
	21st to end	Night	11% 6% 2 5% 4 3 5% 4 6% 7% 48%	1600
July	1st to 10th	Night	9% 6% 2 5% 3 4 5% 4 7% 9% 46%	3618
	11th to 20th	Night	6% 4 2 6% 3 4 4 4 5% 8% 54%	3617
	21st to end	Night	8% 5% 2 6% 5% 4 5% 4 6% 7% 48%	4118
August	1st to 10th	Night	5% 4 2 5% 4 4 4 5% 7% 8% 52%	2926
	11th to 20th	Night	10% 5% 2 5% 3 4 3 3 5% 7% 53%	2910
	21st to end	Night	9% 5% 2 5% 4 4 4 3 5% 7% 53%	3586
September	1st to 10th	Night	9% 4 2 6% 4 3 4 3 5% 5% 54%	2000
	11th to 20th	Night	11% 4 2 5% 4 4 5% 2 4 7% 53%	2000
	21st to end	Night	9% 5% 2 4 3 4 3 3 4 6% 57%	2270
October	1st to 10th	Night	12% 5% 2 5% 4 3 4 2 3 6% 52%	2400
	11th to 20th	Night	16% 8% 2 6% 4 3 3 3 4 5% 47%	2400
	21st to end	Night	17% 9% 3 6% 4 4 4 3 5% 5% 40%	2662
November	1st to 10th	Night	12% 7% 2 5% 3 4 3 4 4 6% 50%	2666
	11th to 20th	Night	13% 11% 4 8% 5% 4 4 4 4 6% 39%	2893
	21st to end	Night	15% 10% 3 8% 5% 4 4 3 4 6% 39%	2940
December	1st to 10th	Night	7% 8% 3 8% 4 5% 4 4 5% 8% 44%	4720
	11th to 20th	Night	15% 13% 4 10% 5% 4 4 3 4 6% 32%	5339
	21st to end	Night	22% 18% 7% 14% 5% 4 4 3 4 4 15%	7150

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	66% 5% 10% 14% 4	4692
	11th to 20th	Day	57% 4 10% 16% 13% 1	4888
	21st to end	Day	54% 5% 13% 20% 7%	5812
February	1st to 10th	Day	54% 5% 14% 18% 8% 1	1890
	11th to 20th	Day	49% 6% 12% 24% 8% 2	1853
	21st to end	Day	50% 6% 13% 20% 9% 2	1725
March	1st to 10th	Day	43% 3 11% 27% 12% 3	4833
	11th to 20th	Day	35% 5% 12% 34% 13% 1	5090
	21st to end	Day	59% 7% 13% 15% 6% 1	5742
April	1st to 10th	Day	54% 5% 11% 22% 8%	2520
	11th to 20th	Day	50% 6% 12% 19% 11% 1	2494
	21st to end	Day	50% 5% 12% 21% 11% 2	2576
May	1st to 10th	Day	43% 6% 11% 21% 19%	6134
	11th to 20th	Day	37% 5% 12% 30% 15% 2	6323
	21st to end	Day	42% 7% 12% 26% 12% 1	6949
June	1st to 10th	Day	35% 8% 15% 26% 15% 2	2800
	11th to 20th	Day	37% 7% 13% 22% 19% 2	2800
	21st to end	Day	39% 8% 15% 23% 13% 2	2800
July	1st to 10th	Day	39% 7% 14% 30% 10% 1	6291
	11th to 20th	Day	33% 6% 14% 31% 15% 1	6285
	21st to end	Day	37% 9% 17% 22% 14% 1	6556
August	1st to 10th	Day	36% 7% 15% 27% 13% 2	4220
	11th to 20th	Day	38% 7% 16% 25% 13% 1	4186
	21st to end	Day	32% 6% 15% 30% 17% 1	4311
September	1st to 10th	Day	34% 6% 13% 27% 18% 3	2400
	11th to 20th	Day	34% 6% 14% 30% 15% 1	2400
	21st to end	Day	36% 6% 11% 29% 18% 1	2104
October	1st to 10th	Day	24% 3 6% 36% 30% 1	3260
	11th to 20th	Day	31% 4 10% 29% 22% 4	3240
	21st to end	Day	40% 3 11% 29% 15% 2	3490
November	1st to 10th	Day	39% 6% 12% 27% 14% 3	1852
	11th to 20th	Day	50% 5% 12% 21% 11% 1	1725
	21st to end	Day	49% 6% 15% 22% 8% 1	1680
December	1st to 10th	Day	42% 5% 12% 34% 6% 1	2690
	11th to 20th	Day	61% 4 13% 12% 8% 1	3085
	21st to end	Day	75% 4 8% 10% 3	4070
January	1st to 10th	Night	58% 5% 14% 16% 6% 1	8233
	11th to 20th	Night	56% 4 11% 15% 13%	8100
	21st to end	Night	49% 4 14% 22% 10% 1	8402
February	1st to 10th	Night	53% 5% 11% 20% 11% 1	2730
	11th to 20th	Night	45% 5% 12% 25% 12% 2	2664
	21st to end	Night	47% 5% 12% 20% 14% 2	2079
March	1st to 10th	Night	40% 3 8% 28% 18% 2	5269
	11th to 20th	Night	33% 4 10% 32% 18% 2	5090
	21st to end	Night	59% 5% 12% 15% 8% 1	5430
April	1st to 10th	Night	46% 5% 10% 24% 13% 2	2100
	11th to 20th	Night	44% 6% 10% 22% 15% 3	2075
	21st to end	Night	44% 5% 11% 24% 14% 2	2041
May	1st to 10th	Night	39% 6% 9% 24% 21% 1	3869
	11th to 20th	Night	35% 5% 12% 26% 17% 5%	3597
	21st to end	Night	41% 7% 10% 29% 12% 1	3950
June	1st to 10th	Night	32% 8% 15% 27% 15% 3	1600
	11th to 20th	Night	35% 7% 12% 22% 20% 4	1600
	21st to end	Night	33% 6% 14% 26% 17% 4	1600
July	1st to 10th	Night	32% 7% 16% 28% 15% 2	3580
	11th to 20th	Night	28% 6% 15% 34% 15% 2	3572
	21st to end	Night	33% 8% 19% 23% 16% 1	4000
August	1st to 10th	Night	27% 8% 16% 31% 17% 1	2916
	11th to 20th	Night	31% 6% 16% 34% 13% 1	2937
	21st to end	Night	31% 6% 13% 28% 18% 4	3586
September	1st to 10th	Night	31% 5% 11% 28% 24% 2	2000
	11th to 20th	Night	32% 5% 10% 33% 18% 1	2000
	21st to end	Night	28% 5% 11% 30% 24% 2	2270
October	1st to 10th	Night	24% 2 7% 31% 34% 2	3920
	11th to 20th	Night	29% 3 10% 24% 29% 6%	3899
	21st to end	Night	46% 4 9% 23% 16% 3	4298
November	1st to 10th	Night	36% 5% 14% 25% 17% 3	2666
	11th to 20th	Night	46% 5% 13% 23% 12% 2	2893
	21st to end	Night	48% 4 12% 26% 10% 1	2940
December	1st to 10th	Night	39% 4 16% 31% 9% 1	4720
	11th to 20th	Night	54% 5% 13% 23% 5% 1	5341
	21st to end	Night	73% 4 8% 10% 4	7150

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	17% 13% 36% 25% 8% 2	330
	11th to 20th	Day	20% 11% 43% 21% 5%	330
	21st to end	Day	16% 18% 35% 26% 5% 1	363
February	1st to 10th	Day	15% 21% 34% 25% 5% 1	330
	11th to 20th	Day	18% 17% 37% 21% 6% 1	330
	21st to end	Day	18% 17% 40% 20% 4	273
March	1st to 10th	Day	15% 16% 43% 19% 5% 1	330
	11th to 20th	Day	23% 14% 32% 22% 8% 1	330
	21st to end	Day	31% 15% 31% 16% 6% 1	430
April	1st to 10th	Day	25% 16% 36% 18% 5% 1	540
	11th to 20th	Day	25% 17% 29% 19% 8% 1	532
	21st to end	Day	24% 14% 35% 17% 8% 2	596
May	1st to 10th	Day	22% 13% 30% 24% 9% 2	709
	11th to 20th	Day	22% 12% 26% 25% 13% 3	725
	21st to end	Day	16% 8% 29% 27% 15% 4	789
June	1st to 10th	Day	10% 6% 27% 32% 20% 5%	730
	11th to 20th	Day	13% 7% 28% 35% 15% 2	730
	21st to end	Day	12% 7% 32% 31% 13% 4	730
July	1st to 10th	Day	9% 3 19% 33% 24% 12%	721
	11th to 20th	Day	8% 3 26% 33% 23% 7%	718
	21st to end	Day	7% 3 23% 36% 25% 5%	794
August	1st to 10th	Day	8% 3 23% 32% 27% 7%	726
	11th to 20th	Day	12% 5% 18% 32% 24% 9%	704
	21st to end	Day	8% 4 23% 34% 25% 6%	583
September	1st to 10th	Day	13% 7% 22% 30% 22% 6%	530
	11th to 20th	Day	9% 3 25% 37% 20% 6%	530
	21st to end	Day	14% 9% 28% 28% 16% 4	380
October	1st to 10th	Day	16% 8% 32% 24% 14% 5%	330
	11th to 20th	Day	22% 18% 35% 16% 8%	330
	21st to end	Day	22% 15% 35% 22% 5% 2	363
November	1st to 10th	Day	17% 12% 38% 26% 5% 2	330
	11th to 20th	Day	19% 21% 32% 21% 6% 1	330
	21st to end	Day	23% 12% 37% 23% 5%	330
December	1st to 10th	Day	12% 15% 43% 21% 7% 2	330
	11th to 20th	Day	19% 16% 35% 21% 8% 1	330
	21st to end	Day	30% 12% 38% 16% 3	363
January	1st to 10th	Night	14% 13% 38% 27% 7%	1050
	11th to 20th	Night	16% 14% 36% 28% 6%	1050
	21st to end	Night	18% 12% 36% 29% 5%	1155
February	1st to 10th	Night	17% 13% 36% 28% 5% 1	1050
	11th to 20th	Night	15% 12% 39% 28% 5%	1029
	21st to end	Night	18% 13% 39% 26% 4 1	695
March	1st to 10th	Night	20% 12% 37% 25% 5% 1	746
	11th to 20th	Night	19% 10% 36% 27% 7%	630
	21st to end	Night	24% 12% 35% 23% 5% 1	693
April	1st to 10th	Night	21% 14% 40% 22% 3	630
	11th to 20th	Night	18% 14% 35% 25% 7%	623
	21st to end	Night	21% 10% 34% 27% 7% 1	630
May	1st to 10th	Night	18% 8% 33% 32% 8% 1	603
	11th to 20th	Night	17% 8% 32% 33% 10% 1	591
	21st to end	Night	15% 6% 31% 34% 14% 1	650
June	1st to 10th	Night	10% 5% 27% 42% 16% 1	600
	11th to 20th	Night	11% 4 32% 42% 12% 1	600
	21st to end	Night	13% 4 26% 40% 16% 1	600
July	1st to 10th	Night	6% 2 13% 45% 31% 2	585
	11th to 20th	Night	7% 3 19% 41% 27% 4	582
	21st to end	Night	6% 3 18% 48% 23% 2	657
August	1st to 10th	Night	5% 2 16% 47% 28% 2	597
	11th to 20th	Night	10% 3 15% 41% 26% 5%	594
	21st to end	Night	9% 2 19% 42% 25% 2	660
September	1st to 10th	Night	11% 4 20% 40% 21% 4	600
	11th to 20th	Night	12% 3 20% 40% 24% 2	600
	21st to end	Night	10% 7% 26% 38% 18% 2	725
October	1st to 10th	Night	15% 6% 30% 35% 14% 1	800
	11th to 20th	Night	19% 11% 33% 28% 9%	800
	21st to end	Night	23% 11% 32% 28% 7%	880
November	1st to 10th	Night	16% 10% 37% 29% 8% 1	820
	11th to 20th	Night	17% 12% 40% 24% 7%	1003
	21st to end	Night	19% 12% 36% 25% 8%	1050
December	1st to 10th	Night	18% 11% 39% 26% 5% 1	1050
	11th to 20th	Night	22% 10% 34% 27% 6%	1050
	21st to end	Night	26% 11% 35% 22% 6%	1155

Page generated at 2026-04-29 01:21:44. Version ac07

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