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Weather Element | Average | High | Low |
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Temperature | -0.9 °C | 1.1 °C (2:52 pm) | -2.2 °C (6:52 am) |
Dewpoint | -5.1 °C | -3 °C (6:04 am) | -9 °C (3:40 am) |
Humidity | 75 % | 93 % (6:04 am) | 51 % (3:40 am) |
Barometer | 1014.6 hPa | 1021 hPa (11:52 pm) | 1011.9 hPa (3:40 am) |
Wind Speed | 8.7 km/h | 18.5 km/h (9:03 am) |
Weather Element | Average |
---|---|
Visibility | 9.7 km |
Wind Direction | ENE (78.8 °) |
Weather Element | Total |
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Precipitation | 3.56 mm |
Heating Degree Days | 18.9 (Base 18.3) |
Averaged from 34 records on 26 February, 2015 |
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Local Time | Temperature | Dewpoint | Humidity | Barometer | Visibility | Wind Direction | Wind Speed | Gust Speed | Precipitation | Events | Conditions |
---|---|---|---|---|---|---|---|---|---|---|---|
12:52 AM | 0.6 °C | -8.3 °C | 52 % | 1013.9 hPa | 16.1 km | South (170°) | 7.4 km/h | Overcast | |||
1:52 AM | 0.6 °C | -7.8 °C | 54 % | 1013.2 hPa | 16.1 km | SE (140°) | 7.4 km/h | Overcast | |||
2:52 AM | 0 °C | -8.3 °C | 54 % | 1012.2 hPa | 16.1 km | Calm | Overcast | ||||
3:40 AM | 0 °C | -9 °C | 51 % | 1011.9 hPa | 14.5 km | Calm | 0 mm | Snow | Light Snow | ||
3:52 AM | -0.6 °C | -6.1 °C | 67 % | 1012.2 hPa | 4 km | ESE (120°) | 7.4 km/h | 0 mm | Snow | Light Snow | |
4:05 AM | -1 °C | -5 °C | 75 % | 1011.9 hPa | 2.4 km | NE (50°) | 9.3 km/h | 0 mm | Snow | Light Snow | |
4:30 AM | -1 °C | -4 °C | 80 % | 1011.9 hPa | 4 km | NNE (20°) | 9.3 km/h | 0 mm | Snow | Light Snow | |
4:52 AM | -1.7 °C | -3.3 °C | 89 % | 1012.5 hPa | 1.9 km | North (10°) | 7.4 km/h | 0.25 mm | Snow | Light Snow | |
5:52 AM | -1.7 °C | -3.3 °C | 89 % | 1012.5 hPa | 1.9 km | NNE (20°) | 11.1 km/h | 0.51 mm | Snow | Light Snow | |
6:04 AM | -2 °C | -3 °C | 93 % | 1012.2 hPa | 1.6 km | NNE (20°) | 11.1 km/h | 0 mm | Snow | Light Snow | |
6:52 AM | -2.2 °C | -3.3 °C | 92 % | 1012.9 hPa | 1.6 km | North (10°) | 9.3 km/h | Snow | Light Snow | ||
7:47 AM | -2 °C | -3 °C | 93 % | 1012.9 hPa | 1.3 km | North (10°) | 11.1 km/h | 0.51 mm | Snow | Light Snow | |
7:52 AM | -1.7 °C | -3.3 °C | 89 % | 1013.2 hPa | 0.8 km | North (10°) | 11.1 km/h | 0.51 mm | Fog-Snow | Snow | |
8:37 AM | -2 °C | -3 °C | 93 % | 1013.5 hPa | 0.8 km | North (10°) | 11.1 km/h | 0.76 mm | Fog-Snow | Snow | |
8:52 AM | -1.7 °C | -3.3 °C | 89 % | 1013.5 hPa | 1.3 km | NNE (20°) | 14.8 km/h | 1.02 mm | Snow | Light Snow | |
9:03 AM | -1 °C | -3 °C | 86 % | 1013.2 hPa | 1.9 km | North (10°) | 18.5 km/h | 0 mm | Snow | Light Snow | |
9:06 AM | -2 °C | -3 °C | 93 % | 1013.2 hPa | 2.4 km | North (10°) | 18.5 km/h | 0 mm | Snow | Light Snow | |
9:39 AM | -1 °C | -4 °C | 80 % | 1013.5 hPa | 3.2 km | NNE (20°) | 14.8 km/h | 0 mm | Snow | Light Snow | |
9:52 AM | -1.1 °C | -3.9 °C | 82 % | 1013.9 hPa | 4.8 km | NNE (20°) | 16.7 km/h | 0 mm | Snow | Light Snow | |
10:52 AM | -1.1 °C | -5 °C | 75 % | 1013.2 hPa | 12.9 km | North (10°) | 16.7 km/h | 0 mm | Overcast | ||
11:52 AM | -1 °C | -5 °C | 75 % | 1012.9 hPa | 16.1 km | North (360°) | 13 km/h | Overcast | |||
12:52 PM | -1 °C | -5 °C | 75 % | 1012.5 hPa | 14.5 km | NNW (340°) | 14.8 km/h | Overcast | |||
1:52 PM | 0 °C | -5.6 °C | 66 % | 1013.9 hPa | 16.1 km | NNW (330°) | 14.8 km/h | Mostly Cloudy | |||
2:12 PM | 0 °C | -6 °C | 64 % | 1013.5 hPa | 16.1 km | WNW (300°) | 14.8 km/h | Mostly Cloudy | |||
2:52 PM | 1.1 °C | -6.1 °C | 59 % | 1014.6 hPa | 16.1 km | NW (320°) | 13 km/h | Scattered Clouds | |||
3:52 PM | 1.1 °C | -6.7 °C | 56 % | 1015.2 hPa | 16.1 km | North (350°) | 9.3 km/h | Overcast | |||
4:52 PM | 1.1 °C | -6.7 °C | 56 % | 1015.9 hPa | 16.1 km | Calm | Overcast | ||||
5:52 PM | 0.6 °C | -5.6 °C | 64 % | 1016.6 hPa | 16.1 km | Calm | Mostly Cloudy | ||||
6:52 PM | -1.1 °C | -6.1 °C | 69 % | 1017.9 hPa | 16.1 km | Calm | Mostly Cloudy | ||||
7:52 PM | -2.2 °C | -5.6 °C | 78 % | 1019 hPa | 16.1 km | Calm | Overcast | ||||
8:52 PM | -2.2 °C | -5.6 °C | 78 % | 1019.3 hPa | 16.1 km | Calm | Overcast | ||||
9:52 PM | -2 °C | -5 °C | 80 % | 1019.6 hPa | 16.1 km | Calm | Overcast | ||||
10:52 PM | -1.1 °C | -5 °C | 75 % | 1020.7 hPa | 14.5 km | Calm | Overcast | ||||
11:52 PM | -1.1 °C | -4.4 °C | 79 % | 1021 hPa | 12.9 km | Calm | Overcast |
Hourly data recorded from KIAD, located 0 kilometers away from Herndon, Virginia |