Weather World
Roslyn Harbor Monthly Climate Averages
January |
February |
March |
April |
May |
June |
July |
August |
September |
October |
November |
December |
| Hi 37°F Lo 27°F | Hi 39°F Lo 28°F | Hi 47°F Lo 35°F | Hi 57°F Lo 44°F | Hi 67°F Lo 54°F | Hi 77°F Lo 64°F | Hi 83°F Lo 71°F | Hi 81°F Lo 70°F | Hi 75°F Lo 64°F | Hi 64°F Lo 54°F | Hi 52°F Lo 42°F | Hi 43°F Lo 34°F |
| 11 mph | 10 mph | 11 mph | 10 mph | 8 mph | 8 mph | 7 mph | 7 mph | 8 mph | 10 mph | 10 mph | 10 mph |
| 4 in | 4.6 in | 5.4 in | 4.6 in | 4.8 in | 4.7 in | 5.8 in | 4.8 in | 4.4 in | 5.3 in | 3.9 in | 6.1 in |
| 71% | 74% | 71% | 70% | 73% | 72% | 71% | 69% | 71% | 71% | 68% | 73% |
| 44% | 47% | 47% | 46% | 44% | 37% | 34% | 34% | 36% | 40% | 36% | 47% |
| 30.0 in | 30.0 in | 30.0 in | 30.0 in | 30.0 in | 29.9 in | 30.0 in | 30.0 in | 30.1 in | 30.0 in | 30.1 in | 30.1 in |
| 21 | 18 | 23 | 23 | 23 | 22 | 22 | 23 | 24 | 25 | 25 | 22 |
| 7 | 7 | 7 | 7 | 8 | 8 | 9 | 8 | 6 | 6 | 5 | 7 |
| 3 | 3 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 |
| 1 | 1 | 1 | 0 | 1 | 0 | 0 | 0 | 0 | 1 | 0 | 1 |
| 2 | 2 | 2 | 3 | 5 | 6 | 6 | 6 | 4 | 3 | 2 | 1 |
| 180 | 153 | 168 | 164 | 182 | 198 | 218 | 235 | 209 | 185 | 207 | 170 |
January |
February |
March |
April |
May |
June |
July |
August |
September |
October |
November |
December |
| Hi 3°C Lo -3°C | Hi 4°C Lo -2°C | Hi 8°C Lo 2°C | Hi 14°C Lo 7°C | Hi 19°C Lo 12°C | Hi 25°C Lo 18°C | Hi 29°C Lo 22°C | Hi 27°C Lo 21°C | Hi 24°C Lo 18°C | Hi 18°C Lo 12°C | Hi 11°C Lo 6°C | Hi 6°C Lo 1°C |
| 17 km/h | 17 km/h | 17 km/h | 16 km/h | 14 km/h | 13 km/h | 12 km/h | 12 km/h | 13 km/h | 16 km/h | 17 km/h | 17 km/h |
| 102 mm | 117 mm | 136 mm | 117 mm | 122 mm | 118 mm | 148 mm | 122 mm | 111 mm | 135 mm | 99 mm | 155 mm |
| 71% | 74% | 71% | 70% | 73% | 72% | 71% | 69% | 71% | 71% | 68% | 73% |
| 44% | 47% | 47% | 46% | 44% | 37% | 34% | 34% | 36% | 40% | 36% | 47% |
| 1017 mb | 1017 mb | 1017 mb | 1016 mb | 1016 mb | 1014 mb | 1014 mb | 1016 mb | 1018 mb | 1017 mb | 1019 mb | 1018 mb |
| 21 | 18 | 23 | 23 | 23 | 22 | 22 | 23 | 24 | 25 | 25 | 22 |
| 7 | 7 | 7 | 7 | 8 | 8 | 9 | 8 | 6 | 6 | 5 | 7 |
| 3 | 3 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 |
| 1 | 1 | 1 | 0 | 1 | 0 | 0 | 0 | 0 | 1 | 0 | 1 |
| 2 | 2 | 2 | 3 | 5 | 6 | 6 | 6 | 4 | 3 | 2 | 1 |
| 180 | 153 | 168 | 164 | 182 | 198 | 218 | 235 | 209 | 185 | 207 | 170 |
| Month |
| Avg. Temperatures |
| Avg. Wind Speed |
| Avg. Precipitation |
| Average Humidity |
| Avg. Cloud Cover |
| Pressure Average |
| Average Dry Days |
| Avg. Precip. Days |
| Avg. Snow Days |
| Average Fog Days |
| Average UV Index |
| Avg. Hours of Sun |
Averages are based on historical weather data from the past 10 years.