History for Langley AFB, VA on Monday, May 20, 2013
| Daily Summary | |||
| Actual | Average (KORF) | Record (KORF) | |
| Temperature | |||
| Mean Temperature | 72 °F | 68 °F | |
| Max Temperature | 77 °F | 76 °F | 98 °F (1996) |
| Min Temperature | 68 °F | 59 °F | 45 °F (1882) |
| Degree Days | |||
| Heating Degree Days | 0 | 2 | |
| Month to date heating degree days | 59 | ||
| Since 1 July heating degree days | 3359 | ||
| Cooling Degree Days | 6 | 4 | |
| Month to date cooling degree days | 60 | ||
| Year to date cooling degree days | 104 | ||
| Growing Degree Days | 22 (Base 50) | ||
| Moisture | |||
| Dew Point | 70 °F | ||
| Average Humidity | 96 | ||
| Maximum Humidity | 100 | ||
| Minimum Humidity | 83 | ||
| Precipitation | |||
| Precipitation | 0.00 in | 0.11 in | 1.98 in (1929) |
| Month to date precipitation | 2.09 | ||
| Year to date precipitation | 15.70 | ||
| Snow | |||
| Snow | - | 0.00 in | 0.00 in (2002) |
| Month to date snowfall | 0.0 | ||
| Since 1 July snowfall | 5.8 | ||
| Snow Depth | - | ||
| Sea Level Pressure | |||
| Sea Level Pressure | 30.14 in | ||
| Wind | |||
| Wind Speed | 7 mph () | ||
| Max Wind Speed | 13 mph | ||
| Max Gust Speed | 20 mph | ||
| Visibility | 10.0 miles | ||
| Events | |||
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Click here for data from the nearest station with official NWS data (KORF). |
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| Key: T is trace of precipitation, MM is missing value | |||
| Source: Averaged Metar Reports | |||
| Time (EDT) | Temp. | Dew Point | Humidity | Sea Level Pressure | Visibility | Wind Direction | Wind Speed | Gust Speed | Precip. | Events | Conditions |
| 12:58 AM | 68.2 °F | 68.2 °F | 100% | 30.15 in | 10.0 miles | South | 5.8 mph | - | N/A | Mostly Cloudy | |
| 1:58 AM | 69.1 °F | 69.1 °F | 100% | 30.14 in | 10.0 miles | South | 5.8 mph | - | N/A | Mostly Cloudy | |
| 2:58 AM | 69.3 °F | 69.3 °F | 100% | 30.13 in | 10.0 miles | SSW | 5.8 mph | - | N/A | Overcast | |
| 3:58 AM | 69.3 °F | 69.3 °F | 100% | 30.12 in | 10.0 miles | South | 5.8 mph | - | N/A | Mostly Cloudy | |
| 4:58 AM | 68.7 °F | 68.7 °F | 100% | 30.12 in | 10.0 miles | SSW | 8.1 mph | - | N/A | Mostly Cloudy | |
| 5:58 AM | 68.4 °F | 68.4 °F | 100% | 30.13 in | 10.0 miles | SSW | 5.8 mph | - | N/A | Mostly Cloudy | |
| 6:58 AM | 69.3 °F | 69.3 °F | 100% | 30.14 in | 10.0 miles | Variable | 5.8 mph | - | N/A | Overcast | |
| 7:58 AM | 70.2 °F | 70.2 °F | 100% | 30.15 in | 10.0 miles | SSW | 10.4 mph | - | N/A | Overcast | |
| 8:58 AM | 71.6 °F | 71.2 °F | 99% | 30.16 in | 10.0 miles | SSW | 11.5 mph | - | N/A | Overcast | |
| 9:58 AM | 72.7 °F | 70.9 °F | 94% | 30.16 in | 10.0 miles | SSW | 11.5 mph | - | N/A | Mostly Cloudy | |
| 10:53 AM | 75.2 °F | 71.6 °F | 89% | 30.13 in | 10.0 miles | SSW | 10.4 mph | - | N/A | Overcast | |
| 10:58 AM | 75.2 °F | 71.6 °F | 89% | 30.15 in | 10.0 miles | SW | 12.7 mph | - | N/A | Overcast | |
| 11:13 AM | 75.2 °F | 71.6 °F | 89% | 30.12 in | 10.0 miles | SW | 12.7 mph | 18.4 mph | N/A | Mostly Cloudy | |
| 11:43 AM | 77.0 °F | 71.6 °F | 83% | 30.12 in | 10.0 miles | SW | 11.5 mph | 19.6 mph | N/A | Mostly Cloudy |
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