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WunderPhotos
1,613,770
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History for Islip, NY
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Actual: |
Average : |
Record : |
| Temperature: |
| Mean Temperature |
82 °F
|
73 °F
|
|
| Max Temperature |
91 °F
|
81 °F
|
102 °F
(1999) |
| Min Temperature |
72 °F
|
65 °F
|
58 °F
(2009) |
| Degree Days: |
| Heating Degree Days |
0 |
0 |
|
| Month to date heating degree days |
0 |
0 |
|
| Since 1 June heating degree days |
25 |
38 |
|
| Since 1 July heating degree days |
0 |
0 |
|
| Cooling Degree Days |
17 |
8 |
|
| Month to date cooling degree days |
65 |
40 |
|
| Year to date cooling degree days |
281 |
204 |
|
| Since 1 June cooling degree days |
219 |
180 |
|
| Growing Degree Days |
32 (Base 50) |
|
|
| Moisture: |
| Dew Point |
67 °F
|
|
|
| Average Humidity |
63 |
|
|
| Maximum Humidity |
87 |
|
|
| Minimum Humidity |
38 |
|
|
| Precipitation: |
| Precipitation |
0.00 in
|
0.09 in
|
1.87 in
(1989) |
| Month to date precipitation |
0.16 |
0.48 |
|
| Year to date precipitation |
21.48 |
24.21 |
|
| Snow: |
| Snow |
0.00 in
|
0.00 in
|
-
() |
| Month to date snowfall |
0.0 |
0.0 |
|
| Since 1 July snowfall |
0.0 |
0.0 |
|
| Snow Depth |
0.00 in
|
|
|
| Sea Level Pressure: |
| Sea Level Pressure |
29.74 in
|
|
|
| Wind: |
| Wind Speed |
7 mph
(NNW) |
|
|
| Max Wind Speed |
16 mph
|
|
|
| Max Gust Speed |
21 mph
|
|
|
| Visibility |
8 miles
|
|
|
| Events |
|
|
|
| T = Trace of Precipitation, MM = Missing Value |
Source: NWS Daily Summary |
|

Search our historical database for the weather conditions in past years. The results will help you decide how hot, cold, wet, or windy it will be!
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Our dog Rudy, crossed over the Rainbow Bridge today. He is at peace. He gave me one beautiful sunset tonight. Thanks Rudy for 11 wonderful years.
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there was a continuous lightening show after the evening fireworks.
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Our dog Rudy, crossed over the Rainbow Bridge today. He is at peace. He gave me one beautiful sunset tonight. Thanks Rudy for 11 wonderful years.
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Rise: |
Set: |
| Actual Time: |
5:27 AM EDT |
8:26 PM EDT |
| Civil Twilight: |
4:54 AM EDT |
8:59 PM EDT |
| Nautical Twilight: |
4:12 AM EDT |
9:41 PM EDT |
| Astronomical Twilight: |
3:22 AM EDT |
10:30 PM EDT |
| Moon: |
9:40 PM EDT (7/5) |
7:36 AM EDT (7/5) |
| Length Of Visible Light: |
16h 05m |
| Length of Day: |
14h 59m
|
| Waning Gibbous, 95% Moon Illumination |
 |
 |
 |
 |
 |
|
Jul 5
|
Jul 10
Last Quarter
|
Jul 19
New
|
Jul 26
First Quarter
|
Aug 1
Full
|
Definitions of Astronomy Terms

|
| Time (EDT): |
Temp.: |
Dew Point: |
Humidity: |
Sea Level Pressure: |
Visibility: |
Wind Dir: |
Wind Speed: |
Gust Speed: |
Precip: |
Events: |
Conditions: |
| 12:56 AM |
75.0 °F
|
71.1 °F
|
87% |
29.71 in
|
3.0 miles
|
SW |
6.9 mph
|
-
|
N/A |
|
Scattered Clouds |
| 1:14 AM |
75.2 °F
|
71.6 °F
|
89% |
29.71 in
|
2.5 miles
|
WSW |
5.8 mph
|
-
|
N/A |
|
Scattered Clouds |
| 1:43 AM |
75.2 °F
|
71.6 °F
|
89% |
29.70 in
|
3.0 miles
|
West |
3.5 mph
|
-
|
N/A |
|
Scattered Clouds |
| 1:56 AM |
75.0 °F
|
71.1 °F
|
87% |
29.70 in
|
2.5 miles
|
Calm |
Calm |
-
|
N/A |
|
Scattered Clouds |
| 2:30 AM |
75.2 °F
|
71.6 °F
|
89% |
29.69 in
|
3.0 miles
|
West |
5.8 mph
|
-
|
N/A |
|
Scattered Clouds |
| 2:56 AM |
75.0 °F
|
71.1 °F
|
87% |
29.68 in
|
3.0 miles
|
WNW |
5.8 mph
|
-
|
N/A |
|
Scattered Clouds |
| 3:56 AM |
75.9 °F
|
70.0 °F
|
82% |
29.68 in
|
7.0 miles
|
WNW |
6.9 mph
|
-
|
N/A |
|
Partly Cloudy |
| 4:56 AM |
75.9 °F
|
70.0 °F
|
82% |
29.68 in
|
8.0 miles
|
NW |
6.9 mph
|
-
|
N/A |
|
Scattered Clouds |
| 5:56 AM |
77.0 °F
|
70.0 °F
|
79% |
29.71 in
|
9.0 miles
|
NW |
9.2 mph
|
-
|
N/A |
|
Scattered Clouds |
| 6:56 AM |
78.1 °F
|
70.0 °F
|
76% |
29.72 in
|
10.0 miles
|
NW |
8.1 mph
|
-
|
N/A |
|
Scattered Clouds |
| 7:56 AM |
80.6 °F
|
69.8 °F
|
70% |
29.73 in
|
10.0 miles
|
NNW |
10.4 mph
|
-
|
N/A |
|
Scattered Clouds |
| 8:56 AM |
82.9 °F
|
70.0 °F
|
65% |
29.74 in
|
10.0 miles
|
North |
9.2 mph
|
-
|
N/A |
|
Scattered Clouds |
| 9:56 AM |
82.9 °F
|
70.0 °F
|
65% |
29.74 in
|
10.0 miles
|
NNW |
9.2 mph
|
-
|
N/A |
|
Mostly Cloudy |
| 10:56 AM |
84.9 °F
|
70.0 °F
|
61% |
29.74 in
|
10.0 miles
|
NNW |
11.5 mph
|
-
|
N/A |
|
Mostly Cloudy |
| 11:56 AM |
88.0 °F
|
66.9 °F
|
49% |
29.74 in
|
10.0 miles
|
North |
12.7 mph
|
-
|
N/A |
|
Mostly Cloudy |
| 12:56 PM |
88.0 °F
|
68.0 °F
|
51% |
29.75 in
|
10.0 miles
|
NNW |
5.8 mph
|
-
|
N/A |
|
Mostly Cloudy |
| 1:56 PM |
88.0 °F
|
64.9 °F
|
46% |
29.74 in
|
10.0 miles
|
NW |
9.2 mph
|
17.3 mph
|
N/A |
|
Mostly Cloudy |
| 2:56 PM |
89.1 °F
|
61.0 °F
|
39% |
29.75 in
|
10.0 miles
|
NNW |
9.2 mph
|
18.4 mph
|
N/A |
|
Mostly Cloudy |
| 3:56 PM |
89.1 °F
|
62.1 °F
|
40% |
29.75 in
|
10.0 miles
|
NNW |
10.4 mph
|
-
|
N/A |
|
Mostly Cloudy |
| 4:56 PM |
87.1 °F
|
61.0 °F
|
41% |
29.75 in
|
10.0 miles
|
NE |
6.9 mph
|
-
|
N/A |
|
Mostly Cloudy |
| 5:56 PM |
86.0 °F
|
60.1 °F
|
41% |
29.75 in
|
10.0 miles
|
NNE |
9.2 mph
|
-
|
N/A |
|
Mostly Cloudy |
| 6:56 PM |
82.9 °F
|
61.0 °F
|
47% |
29.77 in
|
10.0 miles
|
North |
4.6 mph
|
-
|
N/A |
|
Mostly Cloudy |
| 7:56 PM |
81.0 °F
|
61.0 °F
|
50% |
29.78 in
|
10.0 miles
|
North |
4.6 mph
|
-
|
N/A |
|
Mostly Cloudy |
| 8:56 PM |
79.0 °F
|
61.0 °F
|
54% |
29.79 in
|
10.0 miles
|
NNW |
5.8 mph
|
-
|
N/A |
|
Mostly Cloudy |
| 9:56 PM |
77.0 °F
|
62.1 °F
|
60% |
29.82 in
|
10.0 miles
|
North |
4.6 mph
|
-
|
N/A |
|
Mostly Cloudy |
| 10:56 PM |
75.0 °F
|
64.0 °F
|
69% |
29.83 in
|
10.0 miles
|
NNE |
4.6 mph
|
-
|
N/A |
|
Mostly Cloudy |
| 11:56 PM |
73.0 °F
|
64.9 °F
|
76% |
29.85 in
|
10.0 miles
|
Calm |
Calm |
-
|
N/A |
|
Mostly Cloudy |

Copyright © 2013 Weather Underground, Inc.
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Copyright © 2013 Weather Underground, Inc.
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