WeatherWX.com
Yaphank Monthly Climate Averages
January |
February |
March |
April |
May |
June |
July |
August |
September |
October |
November |
December |
| Hi 38°F Lo 31°F | Hi 39°F Lo 32°F | Hi 43°F Lo 37°F | Hi 51°F Lo 45°F | Hi 61°F Lo 54°F | Hi 70°F Lo 64°F | Hi 77°F Lo 71°F | Hi 78°F Lo 72°F | Hi 72°F Lo 66°F | Hi 63°F Lo 57°F | Hi 53°F Lo 46°F | Hi 45°F Lo 38°F |
| 14 mph | 14 mph | 14 mph | 13 mph | 11 mph | 10 mph | 10 mph | 10 mph | 11 mph | 13 mph | 14 mph | 15 mph |
| 4.2 in | 4.5 in | 5.5 in | 4.6 in | 5 in | 4.6 in | 6 in | 5.9 in | 4.3 in | 6 in | 3.5 in | 5.6 in |
| 72% | 74% | 72% | 74% | 79% | 79% | 78% | 75% | 73% | 72% | 70% | 73% |
| 44% | 48% | 45% | 43% | 41% | 32% | 27% | 26% | 30% | 39% | 36% | 48% |
| 30.0 in | 30.0 in | 30.0 in | 30.0 in | 30.0 in | 29.9 in | 30.0 in | 30.0 in | 30.0 in | 30.0 in | 30.1 in | 30.1 in |
| 17 | 15 | 20 | 22 | 25 | 24 | 24 | 25 | 24 | 25 | 24 | 19 |
| 6 | 6 | 7 | 7 | 6 | 6 | 7 | 6 | 6 | 6 | 5 | 8 |
| 8 | 7 | 4 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 5 |
| 0 | 0 | 1 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| 2 | 2 | 2 | 3 | 5 | 6 | 6 | 6 | 4 | 4 | 2 | 2 |
| 178 | 151 | 177 | 179 | 209 | 236 | 272 | 272 | 239 | 203 | 203 | 164 |
January |
February |
March |
April |
May |
June |
July |
August |
September |
October |
November |
December |
| Hi 3°C Lo -0°C | Hi 4°C Lo -0°C | Hi 6°C Lo 3°C | Hi 11°C Lo 7°C | Hi 16°C Lo 12°C | Hi 21°C Lo 18°C | Hi 25°C Lo 22°C | Hi 25°C Lo 22°C | Hi 22°C Lo 19°C | Hi 17°C Lo 14°C | Hi 12°C Lo 8°C | Hi 7°C Lo 4°C |
| 23 km/h | 22 km/h | 22 km/h | 20 km/h | 18 km/h | 16 km/h | 15 km/h | 15 km/h | 18 km/h | 21 km/h | 23 km/h | 23 km/h |
| 108 mm | 114 mm | 140 mm | 117 mm | 127 mm | 118 mm | 153 mm | 149 mm | 108 mm | 153 mm | 90 mm | 141 mm |
| 72% | 74% | 72% | 74% | 79% | 79% | 78% | 75% | 73% | 72% | 70% | 73% |
| 44% | 48% | 45% | 43% | 41% | 32% | 27% | 26% | 30% | 39% | 36% | 48% |
| 1017 mb | 1017 mb | 1018 mb | 1015 mb | 1017 mb | 1014 mb | 1014 mb | 1015 mb | 1017 mb | 1017 mb | 1019 mb | 1018 mb |
| 17 | 15 | 20 | 22 | 25 | 24 | 24 | 25 | 24 | 25 | 24 | 19 |
| 6 | 6 | 7 | 7 | 6 | 6 | 7 | 6 | 6 | 6 | 5 | 8 |
| 8 | 7 | 4 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 5 |
| 0 | 0 | 1 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| 2 | 2 | 2 | 3 | 5 | 6 | 6 | 6 | 4 | 4 | 2 | 2 |
| 178 | 151 | 177 | 179 | 209 | 236 | 272 | 272 | 239 | 203 | 203 | 164 |
| 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.