Average data for 10 years
1 September
Monday
+25°
+20°
2 September
Tuesday
+25°
+18°
3 September
Wednesday
+25°
+19°
4 September
Thursday
+26°
+19°
5 September
Friday
+25°
+19°
6 September
Saturday
+25°
+18°
7 September
Sunday
+25°
+19°
8 September
Monday
+25°
+19°
9 September
Tuesday
+24°
+18°
10 September
Wednesday
+24°
+18°
11 September
Thursday
+24°
+18°
12 September
Friday
+24°
+17°
13 September
Saturday
+24°
+18°
14 September
Sunday
+24°
+18°
15 September
Monday
+23°
+18°
16 September
Tuesday
+23°
+16°
17 September
Wednesday
+22°
+16°
18 September
Thursday
+22°
+16°
19 September
Friday
+22°
+16°
20 September
Saturday
+23°
+16°
21 September
Sunday
+23°
+16°
22 September
Monday
+23°
+17°
23 September
Tuesday
+22°
+16°
24 September
Wednesday
+22°
+15°
25 September
Thursday
+21°
+15°
26 September
Friday
+21°
+15°
27 September
Saturday
+22°
+16°
28 September
Sunday
+21°
+16°
29 September
Monday
+20°
+15°
30 September
Tuesday
+19°
+14°
In September, the weather in Roslyn is typically warm. Average daily high temperature in September is about 23 degrees above zero. On average, Roslyn has 9 rainy, 9 sunny, 8 partly cloudy, and 4 cloudy days in September. The rains are usually heavy.