New
Islip - Macarthur (United States of America) weather
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Nearest forecast to your detected location
Forecast days
-
4° Maximum daytime temperature: 4° Celsius; 2° Minimum nighttime temperature: 2° Celsius;
Sunrise:
Sunset:
Sunny changing to partly cloudy by early evening.L UVNo pollution data.No pollen data.4° Maximum daytime temperature: 4° Celsius; 2° Minimum nighttime temperature: 2° Celsius; -
6° Maximum daytime temperature: 6° Celsius; -3° Minimum nighttime temperature: -3° Celsius;
Sunrise:
Sunset:
Sunny intervals changing to partly cloudy by early evening.L UVNo pollution data.No pollen data.6° Maximum daytime temperature: 6° Celsius; -3° Minimum nighttime temperature: -3° Celsius; -
4° Maximum daytime temperature: 4° Celsius; -11° Minimum nighttime temperature: -11° Celsius;
Sunrise:
Sunset:
Sunny.L UVNo pollution data.No pollen data.4° Maximum daytime temperature: 4° Celsius; -11° Minimum nighttime temperature: -11° Celsius; -
-7° Maximum daytime temperature: -7° Celsius; -9° Minimum nighttime temperature: -9° Celsius;
Sunrise:
Sunset:
Sunny changing to cloudy by early evening.L UVNo pollution data.No pollen data.-7° Maximum daytime temperature: -7° Celsius; -9° Minimum nighttime temperature: -9° Celsius; -
-3° Maximum daytime temperature: -3° Celsius; -6° Minimum nighttime temperature: -6° Celsius;
Sunrise:
Sunset:
Heavy snow.L UVNo pollution data.No pollen data.-3° Maximum daytime temperature: -3° Celsius; -6° Minimum nighttime temperature: -6° Celsius; -
-3° Maximum daytime temperature: -3° Celsius; -13° Minimum nighttime temperature: -13° Celsius;
Sunrise:
Sunset:
Overcast changing to clear by nighttime.L UVNo pollution data.No pollen data.-3° Maximum daytime temperature: -3° Celsius; -13° Minimum nighttime temperature: -13° Celsius; -
-6° Maximum daytime temperature: -6° Celsius; -14° Minimum nighttime temperature: -14° Celsius;
Sunrise:
Sunset:
Sunny.M UVNo pollution data.No pollen data.-6° Maximum daytime temperature: -6° Celsius; -14° Minimum nighttime temperature: -14° Celsius;
Sunny changing to partly cloudy by early evening.
L UV
No pollution data.
No pollen data.
Sunny intervals changing to partly cloudy by early evening.
L UV
No pollution data.
No pollen data.
Sunny.
L UV
No pollution data.
No pollen data.
Sunny changing to cloudy by early evening.
L UV
No pollution data.
No pollen data.
Heavy snow.
L UV
No pollution data.
No pollen data.
Overcast changing to clear by nighttime.
L UV
No pollution data.
No pollen data.
Sunny.
M UV
No pollution data.
No pollen data.
7 day forecast for Islip - Macarthur
Today (21 January 2026)
| Time |
05:00
|
06:00
|
07:00
|
08:00
|
09:00
|
10:00
|
11:00
|
12:00
|
13:00
|
14:00
|
15:00
|
16:00
|
17:00
|
18:00
|
19:00
|
20:00
|
21:00
|
22:00
|
23:00
|
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Weather symbols | |||||||||||||||||||
| Chance of precipitation |
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
| Temperature (°C) |
-9°
|
-10°
|
-10°
|
-10°
|
-8°
|
-6°
|
-4°
|
-2°
|
-1°
|
0°
|
1°
|
2°
|
3°
|
3°
|
3°
|
4°
|
4°
|
4°
|
4°
|
| Feels like temperature (°C) |
-12°
|
-13°
|
-13°
|
-13°
|
-11°
|
-9°
|
-8°
|
-6°
|
-5°
|
-4°
|
-4°
|
-3°
|
-2°
|
-2°
|
-1°
|
-1°
|
0°
|
0°
|
0°
|
| Wind direction and speed (mph) |
WNW
3
|
W
3
|
WSW
3
|
WSW
3
|
WSW
3
|
SW
3
|
SSW
5
|
SSW
7
|
SSW
8
|
SSW
10
|
S
13
|
S
14
|
S
15
|
S
15
|
SSW
14
|
SSW
13
|
SSW
13
|
SSW
12
|
SSW
12
|
| Wind gust (mph) |
8
|
8
|
8
|
8
|
9
|
11
|
16
|
19
|
22
|
26
|
29
|
29
|
29
|
29
|
28
|
27
|
26
|
25
|
24
|
| Visibility (description) |
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
| Humidity |
42%
|
41%
|
42%
|
43%
|
42%
|
40%
|
39%
|
38%
|
36%
|
37%
|
41%
|
51%
|
58%
|
64%
|
66%
|
68%
|
72%
|
71%
|
70%
|
| UV | - | - | 1 | 1 | 1 | 2 | 2 | 2 | 2 | 1 | 1 | 1 | - | - | - | - | - | - | - |
Thursday (22 January 2026)
| Time |
00:00
|
01:00
|
02:00
|
03:00
|
04:00
|
05:00
|
06:00
|
07:00
|
08:00
|
09:00
|
10:00
|
11:00
|
12:00
|
13:00
|
14:00
|
15:00
|
16:00
|
17:00
|
18:00
|
19:00
|
20:00
|
21:00
|
22:00
|
23:00
|
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Weather symbols | ||||||||||||||||||||||||
| Chance of precipitation |
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
| Temperature (°C) |
4°
|
4°
|
4°
|
4°
|
3°
|
3°
|
3°
|
3°
|
2°
|
2°
|
3°
|
4°
|
5°
|
5°
|
5°
|
5°
|
5°
|
5°
|
5°
|
4°
|
4°
|
4°
|
3°
|
2°
|
| Feels like temperature (°C) |
0°
|
0°
|
0°
|
0°
|
0°
|
0°
|
-1°
|
-1°
|
-1°
|
-1°
|
0°
|
0°
|
1°
|
1°
|
2°
|
2°
|
2°
|
1°
|
1°
|
1°
|
1°
|
0°
|
-1°
|
-2°
|
| Wind direction and speed (mph) |
SSW
12
|
SSW
11
|
SW
10
|
SW
10
|
SW
9
|
SW
8
|
WSW
8
|
WSW
7
|
WSW
8
|
WSW
8
|
WSW
8
|
WSW
10
|
WSW
10
|
WSW
11
|
WSW
12
|
W
12
|
W
12
|
W
11
|
W
10
|
W
10
|
W
9
|
W
9
|
WNW
9
|
WNW
9
|
| Wind gust (mph) |
24
|
23
|
22
|
20
|
19
|
18
|
17
|
17
|
18
|
20
|
23
|
25
|
28
|
29
|
30
|
30
|
29
|
26
|
24
|
22
|
23
|
22
|
22
|
21
|
| Visibility (description) |
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
| Humidity |
65%
|
62%
|
58%
|
56%
|
55%
|
55%
|
55%
|
55%
|
56%
|
55%
|
53%
|
52%
|
51%
|
48%
|
44%
|
44%
|
44%
|
42%
|
41%
|
40%
|
40%
|
40%
|
40%
|
39%
|
| UV | - | - | - | - | - | - | - | 1 | 1 | 1 | 2 | 2 | 2 | 2 | 1 | 1 | 1 | - | - | - | - | - | - | - |
Friday (23 January 2026)
| Time |
00:00
|
01:00
|
02:00
|
03:00
|
04:00
|
05:00
|
06:00
|
07:00
|
08:00
|
09:00
|
10:00
|
11:00
|
12:00
|
13:00
|
14:00
|
15:00
|
16:00
|
17:00
|
18:00
|
19:00
|
20:00
|
21:00
|
22:00
|
23:00
|
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Weather symbols | ||||||||||||||||||||||||
| Chance of precipitation |
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
| Temperature (°C) |
2°
|
1°
|
0°
|
-1°
|
-1°
|
-2°
|
-2°
|
-2°
|
-2°
|
-1°
|
0°
|
1°
|
2°
|
3°
|
3°
|
4°
|
4°
|
3°
|
3°
|
2°
|
0°
|
-3°
|
-5°
|
-6°
|
| Feels like temperature (°C) |
-2°
|
-3°
|
-4°
|
-4°
|
-5°
|
-5°
|
-5°
|
-5°
|
-5°
|
-5°
|
-4°
|
-4°
|
-3°
|
-2°
|
-1°
|
-1°
|
-1°
|
-1°
|
-2°
|
-3°
|
-6°
|
-10°
|
-12°
|
-14°
|
| Wind direction and speed (mph) |
NW
9
|
NW
8
|
NW
7
|
NW
6
|
NW
6
|
NW
4
|
W
4
|
SW
5
|
SW
5
|
SW
6
|
SW
8
|
SW
10
|
SW
12
|
WSW
13
|
WSW
14
|
WSW
15
|
W
14
|
W
13
|
WNW
13
|
NW
14
|
NW
15
|
NW
15
|
NNW
15
|
NNW
15
|
| Wind gust (mph) |
20
|
19
|
16
|
14
|
11
|
10
|
10
|
11
|
13
|
18
|
24
|
29
|
32
|
34
|
35
|
35
|
34
|
33
|
32
|
33
|
34
|
34
|
34
|
33
|
| Visibility (description) |
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
| Humidity |
38%
|
35%
|
36%
|
35%
|
37%
|
36%
|
36%
|
36%
|
37%
|
38%
|
38%
|
38%
|
37%
|
33%
|
33%
|
29%
|
31%
|
32%
|
29%
|
24%
|
23%
|
23%
|
26%
|
26%
|
| UV | - | - | - | - | - | - | - | 1 | 1 | 1 | 2 | 2 | 2 | 2 | 1 | 1 | 1 | - | - | - | - | - | - | - |
Saturday (24 January 2026)
| Time |
00:00
|
01:00
|
02:00
|
03:00
|
04:00
|
05:00
|
06:00
|
07:00
|
08:00
|
09:00
|
10:00
|
11:00
|
12:00
|
13:00
|
14:00
|
15:00
|
16:00
|
17:00
|
18:00
|
19:00
|
20:00
|
21:00
|
22:00
|
23:00
|
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Weather symbols | ||||||||||||||||||||||||
| Chance of precipitation |
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
10%
|
20%
|
| Temperature (°C) |
-7°
|
-8°
|
-8°
|
-9°
|
-9°
|
-10°
|
-10°
|
-11°
|
-10°
|
-10°
|
-10°
|
-9°
|
-8°
|
-8°
|
-7°
|
-7°
|
-7°
|
-7°
|
-7°
|
-7°
|
-7°
|
-7°
|
-7°
|
-8°
|
| Feels like temperature (°C) |
-15°
|
-16°
|
-16°
|
-17°
|
-18°
|
-18°
|
-19°
|
-19°
|
-19°
|
-18°
|
-18°
|
-16°
|
-16°
|
-15°
|
-14°
|
-13°
|
-13°
|
-13°
|
-13°
|
-13°
|
-13°
|
-13°
|
-13°
|
-13°
|
| Wind direction and speed (mph) |
NNW
15
|
NNW
15
|
NNW
14
|
NNW
14
|
NNW
14
|
NNW
14
|
NNW
14
|
NNW
14
|
NNW
13
|
NNW
12
|
NNW
12
|
NNW
11
|
NNW
11
|
NNW
11
|
NNW
10
|
NNW
10
|
N
9
|
N
9
|
N
9
|
N
9
|
N
8
|
NNE
8
|
NNE
8
|
NNE
8
|
| Wind gust (mph) |
32
|
31
|
30
|
30
|
30
|
29
|
29
|
28
|
28
|
27
|
27
|
26
|
25
|
25
|
23
|
22
|
21
|
20
|
19
|
18
|
18
|
17
|
17
|
17
|
| Visibility (description) |
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
| Humidity |
27%
|
34%
|
34%
|
37%
|
38%
|
38%
|
38%
|
36%
|
32%
|
29%
|
26%
|
23%
|
21%
|
20%
|
20%
|
19%
|
18%
|
18%
|
18%
|
18%
|
19%
|
18%
|
19%
|
20%
|
| UV | - | - | - | - | - | - | - | 1 | 1 | 1 | 2 | 2 | 2 | 2 | 1 | 1 | 1 | - | - | - | - | - | - | - |
Sunday (25 January 2026)
| Time |
00:00
|
01:00
|
02:00
|
03:00
|
04:00
|
05:00
|
06:00
|
07:00
|
08:00
|
09:00
|
10:00
|
11:00
|
12:00
|
13:00
|
14:00
|
15:00
|
16:00
|
17:00
|
18:00
|
19:00
|
22:00
|
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Weather symbols | |||||||||||||||||||||
| Chance of precipitation |
20%
|
30%
|
40%
|
50%
|
60%
|
70%
|
80%
|
80%
|
90%
|
90%
|
90%
|
90%
|
90%
|
90%
|
90%
|
90%
|
80%
|
80%
|
80%
|
70%
|
60%
|
| Temperature (°C) |
-8°
|
-8°
|
-8°
|
-8°
|
-8°
|
-8°
|
-8°
|
-8°
|
-8°
|
-7°
|
-7°
|
-7°
|
-6°
|
-6°
|
-5°
|
-5°
|
-5°
|
-4°
|
-4°
|
-4°
|
-3°
|
| Feels like temperature (°C) |
-13°
|
-14°
|
-14°
|
-14°
|
-14°
|
-14°
|
-14°
|
-14°
|
-14°
|
-14°
|
-14°
|
-14°
|
-13°
|
-13°
|
-12°
|
-12°
|
-11°
|
-10°
|
-10°
|
-10°
|
-9°
|
| Wind direction and speed (mph) |
NNE
8
|
NNE
8
|
NNE
8
|
NE
8
|
NE
8
|
NE
8
|
NE
9
|
NE
10
|
NE
10
|
NE
10
|
NE
10
|
NE
11
|
NE
12
|
NE
13
|
NE
13
|
NE
14
|
NE
13
|
NE
13
|
NE
13
|
NE
13
|
NE
11
|
| Wind gust (mph) |
17
|
18
|
19
|
19
|
20
|
21
|
22
|
23
|
24
|
25
|
26
|
28
|
30
|
31
|
31
|
31
|
30
|
29
|
30
|
29
|
24
|
| Visibility (description) |
VG
|
VG
|
VG
|
VG
|
VP
|
VP
|
VP
|
VP
|
VP
|
VP
|
VP
|
VP
|
VP
|
VP
|
VP
|
VP
|
VP
|
P
|
VP
|
P
|
P
|
| Humidity |
21%
|
23%
|
29%
|
60%
|
105%
|
106%
|
106%
|
106%
|
107%
|
107%
|
107%
|
106%
|
104%
|
104%
|
103%
|
101%
|
100%
|
100%
|
101%
|
99%
|
96%
|
| UV | - | - | - | - | - | - | - | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | - | - | - |
Monday (26 January 2026)
| Time |
01:00
|
04:00
|
07:00
|
10:00
|
13:00
|
16:00
|
19:00
|
22:00
|
|---|---|---|---|---|---|---|---|---|
| Weather symbols | ||||||||
| Chance of precipitation |
50%
|
40%
|
40%
|
30%
|
30%
|
20%
|
10%
|
10%
|
| Temperature (°C) |
-3°
|
-4°
|
-4°
|
-5°
|
-4°
|
-5°
|
-7°
|
-8°
|
| Feels like temperature (°C) |
-9°
|
-9°
|
-9°
|
-10°
|
-10°
|
-10°
|
-13°
|
-14°
|
| Wind direction and speed (mph) |
NNE
10
|
NNE
9
|
N
8
|
N
9
|
NNW
10
|
NW
9
|
NW
10
|
NW
9
|
| Wind gust (mph) |
22
|
20
|
20
|
22
|
22
|
25
|
24
|
21
|
| Visibility (description) |
P
|
M
|
M
|
M
|
G
|
VG
|
VG
|
VG
|
| Humidity |
95%
|
95%
|
95%
|
91%
|
81%
|
74%
|
67%
|
67%
|
| UV | - | - | 1 | 2 | 2 | 1 | - | - |
Tuesday (27 January 2026)
| Time |
01:00
|
04:00
|
07:00
|
10:00
|
13:00
|
16:00
|
19:00
|
22:00
|
|---|---|---|---|---|---|---|---|---|
| Weather symbols | ||||||||
| Chance of precipitation |
10%
|
10%
|
10%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
| Temperature (°C) |
-10°
|
-11°
|
-12°
|
-9°
|
-6°
|
-7°
|
-9°
|
-10°
|
| Feels like temperature (°C) |
-17°
|
-18°
|
-19°
|
-15°
|
-12°
|
-11°
|
-14°
|
-15°
|
| Wind direction and speed (mph) |
NW
9
|
NW
8
|
WNW
8
|
WNW
8
|
WNW
10
|
WNW
7
|
WNW
7
|
WNW
7
|
| Wind gust (mph) |
20
|
17
|
19
|
22
|
22
|
18
|
18
|
16
|
| Visibility (description) |
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
| Humidity |
67%
|
66%
|
66%
|
60%
|
58%
|
57%
|
58%
|
60%
|
| UV | - | - | 1 | 3 | 3 | 1 | - | - |
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