Weather History for Islip, NY

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Month of December, 2011

  Max Avg Min Sum
Temperature  
Max Temperature 59 °F 49 °F 30 °F
Mean Temperature 55 °F 41 °F 24 °F
Min Temperature 52 °F 32 °F 17 °F
Degree Days  
Heating Degree Days (base 65) 41 24 10 752
Cooling Degree Days (base 65) 0 0 0 0
Growing Degree Days (base 50) 8 1 0 20
Dew Point  
Dew Point 56 °F 31 °F 3 °F
Precipitation  
Precipitation 0.99 in 0.10 in 0.00 in 2.94 in
Snowdepth 0.0 in 0.0 in 0.0 in -
Wind  
Wind 45 mph 8 mph 0 mph
Gust Wind 59 mph 25 mph 16 mph
Sea Level Pressure  
Sea Level Pressure 30.66 in 30.13 in 29.21 in

Monthly Weather History Graph

Monthly Weather History Graph

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Date:

Astronomy

Dec. 16, 2011 Rise Set
Actual Time 7:10 AM EST 4:25 PM EST
Civil Twilight 6:39 AM EST 4:56 PM EST
Nautical Twilight 6:04 AM EST 5:31 PM EST
Astronomical Twilight 5:31 AM EST 6:04 PM EST
Moon 10:58 PM EST (12/16) 10:52 AM EST (12/16)
Length of Visible Light 10h 17m
Length of Day
9h 15m
Waning Gibbous, 65% of the Moon is Illuminated
Dec 16
Waning Gibbous
Dec 17
Last Quarter
Dec 24
New
Jan 1
First Quarter
Jan 9
Full

Weather History Calendar

Precipitation Actual month total 2.94 Normal Month Total: 4.06
Sunday Monday Tuesday Wednesday Thursday Friday Saturday
 
Clear
Actual:
49 | 33 0.00
Average:
48 | 33 0.14
Partly Cloudy
Actual:
52 | 28 0.00
Average:
48 | 32 0.14
Partly Cloudy
Actual:
48 | 32 0.00
Average:
47 | 32 0.14
Fog
Actual:
54 | 30 0.00
Average:
47 | 32 0.14
Fog
Actual:
54 | 42 0.01
Average:
46 | 31 0.14
Rain
Actual:
58 | 52 0.21
Average:
46 | 31 0.14
Rain
Actual:
58 | 51 0.99
Average:
46 | 31 0.14
Rain
Actual:
51 | 30 0.22
Average:
45 | 31 0.14
Rain
Actual:
52 | 27 0.01
Average:
45 | 30 0.14
Rain
Actual:
48 | 30 0.06
Average:
45 | 30 0.14
Clear
Actual:
41 | 22 0.00
Average:
44 | 30 0.14
Partly Cloudy
Actual:
45 | 24 0.00
Average:
44 | 29 0.14
Scattered Clouds
Actual:
47 | 24 0.00
Average:
44 | 29 0.13
Partly Cloudy
Actual:
50 | 31 0.00
Average:
43 | 29 0.13
Overcast
Actual:
55 | 46 T
Average:
43 | 28 0.13
Partly Cloudy
Actual:
56 | 38 0.00
Average:
43 | 28 0.13
Partly Cloudy
Actual:
43 | 30 0.00
Average:
42 | 28 0.13
Scattered Clouds
Actual:
30 | 18 0.00
Average:
42 | 27 0.13
Partly Cloudy
Actual:
47 | 17 0.00
Average:
42 | 27 0.12
Overcast
Actual:
47 | 39 T
Average:
42 | 27 0.13
Rain
Actual:
56 | 38 0.10
Average:
41 | 27 0.13
Rain
Actual:
59 | 42 0.04
Average:
41 | 26 0.12
Rain
Actual:
49 | 38 0.86
Average:
41 | 26 0.13
Scattered Clouds
Actual:
38 | 22 0.00
Average:
41 | 26 0.13
Partly Cloudy
Actual:
47 | 20 0.00
Average:
40 | 26 0.13
Rain
Actual:
46 | 28 T
Average:
40 | 25 0.12
Rain
Actual:
58 | 26 0.38
Average:
40 | 25 0.12
Partly Cloudy
Actual:
51 | 30 0.00
Average:
40 | 25 0.12
Partly Cloudy
Actual:
34 | 23 0.00
Average:
40 | 25 0.12
Partly Cloudy
Actual:
52 | 30 0.00
Average:
39 | 25 0.11
Rain
Actual:
56 | 40 0.06
Average:
39 | 24 0.12
 

Calendar Legend

Sunny
Clear
Mostly Cloudy
Partly Sunny
Partly Cloudy
Mostly Sunny
Cloudy Rain Snow
Hail
Flurries
Thunderstorms Hazy
Fog
Sleet '?' denotes
'chance of'
Unknown

Daily Weather History & Observations

2011 Temp. (°F) Dew Point (°F) Humidity (%) Sea Level Press. (in) Visibility (mi) Wind (mph) Precip. (in) Events
Dec high avg low high avg low high avg low high avg low high avg low high avg high sum  
1 49 41 33 30 23 14 70 48 26 30.29 30.13 29.92 10 10 10 23 13 29 0.00  
2 52 40 28 35 30 25 89 67 45 30.47 30.33 30.26 10 10 10 16 6 22 0.00  
3 48 40 32 30 28 25 82 62 42 30.66 30.60 30.49 10 10 8 15 5 22 0.00  
4 54 42 30 47 39 28 96 80 63 30.59 30.50 30.41 10 8 4 12 2 17 0.00 Fog
5 54 48 42 52 48 41 100 95 89 30.38 30.32 30.21 10 2 0 9 3 12 0.01 Fog
6 58 55 52 56 54 51 100 93 86 30.18 30.04 29.91 10 5 2 17 10 23 0.21 Rain
7 58 55 51 56 54 49 100 97 93 29.89 29.65 29.28 5 2 1 22 7 29 0.99 Rain
8 51 41 30 43 30 23 92 69 45 30.32 29.85 29.21 10 8 2 40 14 56 0.22 Rain
9 52 40 27 44 34 24 85 73 61 30.35 30.29 30.19 10 10 6 17 6 23 0.01 Rain
10 48 39 30 45 26 10 93 66 38 30.47 30.27 30.15 10 10 6 18 8 22 0.06 Rain
11 41 32 22 28 17 10 81 56 30 30.63 30.59 30.48 10 10 10 12 2 14 0.00  
12 45 35 24 30 24 19 81 63 45 30.60 30.52 30.42 10 10 7 10 2 13 0.00  
13 47 36 24 29 23 19 81 58 34 30.41 30.33 30.27 10 10 9 17 7 22 0.00  
14 50 41 31 37 32 28 89 70 50 30.40 30.36 30.31 10 10 8 10 5 16 0.00  
15 55 51 46 50 44 37 83 65 47 30.30 30.07 29.77 10 10 10 23 14 32 T  
16 56 47 38 48 30 21 83 60 37 30.12 29.99 29.75 10 10 10 31 13 39 0.00  
17 43 37 30 28 23 11 78 61 43 30.13 30.08 30.04 10 10 10 17 7 23 0.00  
18 30 24 18 12 8 3 62 47 31 30.31 30.22 30.12 10 10 10 18 8 24 0.00  
19 47 32 17 35 24 10 74 64 53 30.29 30.11 29.95 10 10 10 25 11 32 0.00  
20 47 43 39 36 27 19 65 52 39 30.20 30.11 29.95 10 10 10 17 6 21 T  
21 56 47 38 54 47 22 100 73 46 30.17 29.92 29.71 10 5 1 24 11 33 0.10 Rain
22 59 51 42 49 41 37 86 65 44 30.08 29.99 29.77 10 10 5 21 8 30 0.04 Rain
23 49 44 38 46 40 27 100 79 58 30.18 29.93 29.76 10 7 2 18 10 25 0.86 Rain
24 38 30 22 27 17 9 68 52 36 30.46 30.36 30.19 10 10 10 20 8 23 0.00  
25 47 34 20 36 27 15 77 65 53 30.42 30.18 29.87 10 10 10 21 6 28 0.00  
26 46 37 28 34 26 21 78 58 37 30.29 30.10 29.87 10 10 10 26 10 35 T Rain
27 58 42 26 54 40 22 93 79 65 30.21 29.80 29.34 10 8 4 45 12 59 0.38 Rain
28 51 41 30 43 27 15 89 66 43 29.80 29.54 29.36 10 10 10 30 16 40 0.00  
29 34 29 23 21 11 6 69 51 32 30.04 29.96 29.80 10 10 10 22 9 30 0.00  
30 52 41 30 42 33 21 96 75 54 30.06 30.01 29.97 10 9 6 14 4 17 0.00  
31 56 48 40 47 43 37 93 80 66 29.99 29.88 29.78 10 10 6 13 4 15 0.06 Rain