Weather observations for the past three days for
Gaithersburg - Montgomery County Airport
| Date | Time (est) | Wind (kph) | Vis. (km) | Weather | Sky Cond. | Temperature (ºC) | Relative Humidity | Wind Chill (°C) | Heat Index (°C) | Pressure | Precipitation (cm) | ||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Air | Dwpt | 6 hour | altimeter (cm) | sea level (mb) | 1 hr | 3 hr | 6 hr | ||||||||||
| Max. | Min. | ||||||||||||||||
| 21 | 10:56 | SE 15 | 16.09 | Fair | CLR | 0 | -11.1 | 43% | -4 | 77.34 | 1033.4 | ||||||
| 21 | 09:56 | S 17 | 16.09 | Fair | CLR | -1.7 | -11.1 | 49% | -6 | 77.47 | 1035.0 | ||||||
| 21 | 08:56 | SE 11 | 16.09 | Fair | CLR | -5.6 | -13.3 | 55% | -10 | 77.47 | 1035.1 | ||||||
| 21 | 07:56 | Calm | 16.09 | Fair | CLR | -11.1 | -14.4 | 77% | 77.5 | 1035.6 | |||||||
| 21 | 06:56 | Calm | 16.09 | Fair | CLR | -11.1 | -15 | -10 | -12.2 | 73% | 77.47 | 1035.4 | |||||
| 21 | 05:56 | Calm | 16.09 | Fair | CLR | -11.1 | -15.6 | 70% | 77.52 | 1035.8 | |||||||
| 21 | 04:56 | Calm | 16.09 | Fair | CLR | -10.6 | -15.6 | 67% | 77.47 | 1035.3 | |||||||
| 21 | 03:56 | Calm | 16.09 | Fair | CLR | -11.1 | -14.4 | 77% | 77.5 | 1035.7 | |||||||
| 21 | 02:56 | SE 6 | 16.09 | Fair | CLR | -11.1 | -15 | 73% | 77.5 | 1035.6 | |||||||
| 21 | 01:56 | Calm | 16.09 | Fair | CLR | -11.7 | -15 | 77% | 77.5 | 1035.4 | |||||||
| 21 | 00:56 | Calm | 16.09 | Fair | CLR | -11.1 | -16.1 | -5.6 | -11.1 | 67% | 77.47 | 1035.4 | |||||
| 20 | 23:56 | Calm | 16.09 | Fair | CLR | -10 | -17.2 | 56% | 77.47 | 1035.4 | |||||||
| 20 | 22:56 | Calm | 16.09 | Fair | CLR | -10.6 | -16.1 | 64% | 77.47 | 1035.2 | |||||||
| 20 | 21:56 | SE 9 | 16.09 | Fair | CLR | -7.8 | -17.2 | 47% | -12 | 77.44 | 1035.1 | ||||||
| 20 | 20:56 | W 11 | 16.09 | Fair | CLR | -9.4 | -17.2 | 53% | -14 | 77.39 | 1034.4 | ||||||
| 20 | 19:56 | Calm | 16.09 | Fair | CLR | -6.1 | -18.3 | 38% | 77.39 | 1034.3 | |||||||
| 20 | 18:56 | Vrbl 6 | 16.09 | Fair | CLR | -5.6 | -18.3 | -2.2 | -6.1 | 36% | 77.34 | 1033.4 | |||||
| 20 | 17:56 | NW 7 | 16.09 | Fair | CLR | -5 | -19.4 | 32% | -8 | 77.29 | 1032.8 | ||||||
| 20 | 16:56 | W 22 | 16.09 | Fair | CLR | -3.9 | -19.4 | 29% | -10 | 77.22 | 1032.0 | ||||||
| 20 | 15:56 | NW 19 | 16.09 | Fair | CLR | -2.8 | -20 | 25% | -8 | 77.19 | 1031.3 | ||||||
| 20 | 14:56 | W 17 G 30 | 16.09 | Fair | CLR | -2.2 | -20 | 24% | -7 | 77.14 | 1030.7 | ||||||
| 20 | 13:56 | SW 13 | 16.09 | Fair | CLR | -2.8 | -19.4 | 27% | -7 | 77.11 | 1030.5 | ||||||
| 20 | 12:56 | W 22 G 30 | 16.09 | Fair | CLR | -3.3 | -18.3 | -3.3 | -9.4 | 31% | -9 | 77.14 | 1030.6 | ||||
| 20 | 11:56 | NW 13 G 31 | 16.09 | Fair | CLR | -4.4 | -18.9 | 32% | -9 | 77.19 | 1031.3 | ||||||
| 20 | 10:56 | W 22 G 33 | 16.09 | Fair | CLR | -5 | -18.3 | 35% | -11 | 77.24 | 1031.9 | ||||||
| 20 | 09:56 | NW 22 G 33 | 16.09 | Fair | CLR | -6.7 | -17.8 | 41% | -14 | 77.19 | 1031.5 | ||||||
| 20 | 08:56 | NW 19 | 16.09 | Fair | CLR | -7.8 | -18.3 | 43% | -14 | 77.17 | 1031.0 | ||||||
| 20 | 07:56 | NW 11 | 16.09 | Fair | CLR | -9.4 | -18.3 | 49% | -14 | 77.11 | 1030.4 | ||||||
| 20 | 06:56 | NW 17 G 28 | 16.09 | Fair | CLR | -8.9 | -18.9 | -4.4 | -9.4 | 45% | -15 | 77.06 | 1029.6 | ||||
| 20 | 05:56 | NW 17 | 16.09 | Fair | CLR | -8.9 | -18.9 | 45% | -15 | 76.96 | 1028.4 | ||||||
| 20 | 04:56 | NW 15 G 26 | 16.09 | Fair | CLR | -8.3 | -18.9 | 43% | -14 | 76.89 | 1027.3 | ||||||
| 20 | 03:56 | NW 24 G 33 | 16.09 | Fair | CLR | -7.8 | -17.8 | 45% | -15 | 76.86 | 1026.8 | ||||||
| 20 | 02:56 | NW 20 G 28 | 16.09 | Fair | CLR | -6.7 | -16.7 | 45% | -13 | 76.86 | 1026.9 | ||||||
| 20 | 01:56 | NW 15 | 16.09 | Fair | CLR | -5.6 | -16.1 | 44% | -11 | 76.78 | 1025.9 | ||||||
| 20 | 00:56 | NW 11 | 16.09 | Fair | CLR | -4.4 | -13.9 | -0.6 | -4.4 | 48% | -8 | 76.71 | 1024.7 | ||||
| 19 | 23:56 | NW 11 | 16.09 | Fair | CLR | -3.9 | -13.3 | 48% | -8 | 76.63 | 1023.9 | ||||||
| 19 | 22:56 | NW 20 G 28 | 16.09 | Fair | CLR | -2.2 | -10.6 | 53% | -8 | 76.56 | 1022.8 | ||||||
| 19 | 21:56 | NW 19 | 16.09 | Fair | CLR | -1.7 | -11.7 | 47% | -7 | 76.48 | 1021.6 | ||||||
| 19 | 20:56 | NW 15 | 16.09 | Fair | CLR | -1.1 | -11.7 | 45% | -5 | 76.4 | 1020.8 | ||||||
| 19 | 19:56 | NW 9 | 16.09 | Fair | CLR | -1.1 | -11.7 | 45% | -4 | 76.38 | 1020.5 | ||||||
| 19 | 17:56 | NW 9 | 16.09 | Fair | CLR | 0.6 | -12.2 | 38% | -2 | 76.25 | 1018.5 | ||||||
| 19 | 16:56 | NW 17 | 16.09 | Fair | CLR | 2.2 | -11.7 | 35% | -2 | 76.2 | 1017.8 | ||||||
| 19 | 14:56 | W 13 | 16.09 | Partly Cloudy | SCT060 | 3.9 | -9.4 | 38% | 1 | 76.1 | 1016.5 | ||||||
| 19 | 13:56 | S 13 | 16.09 | A Few Clouds | FEW055 | 3.3 | -9.4 | 39% | 0 | 76.05 | 1016.0 | ||||||
| 19 | 12:56 | SW 17 | 16.09 | A Few Clouds | FEW048 | 2.8 | -8.9 | 2.8 | -9.4 | 42% | -1 | 76.07 | 1016.1 | ||||
| 19 | 11:56 | W 22 G 35 | 16.09 | Partly Cloudy | SCT048 | 1.7 | -9.4 | 44% | -3 | 76.1 | 1016.7 | ||||||
| 19 | 10:56 | W 11 | 16.09 | Mostly Cloudy | BKN050 | 0.6 | -7.2 | 56% | -2 | 76.2 | 1017.8 | ||||||
| 19 | 09:56 | Vrbl 11 | 16.09 | Overcast | OVC055 | 0.6 | -5.6 | 64% | -2 | 76.17 | 1017.7 | ||||||
| 19 | 08:56 | SW 11 | 16.09 | Fair | CLR | -1.7 | -3.9 | 85% | -5 | 76.15 | 1017.3 | ||||||
| 19 | 07:56 | S 7 | 16.09 | Fair | CLR | -7.8 | -8.9 | 92% | -11 | 76.15 | 1017.4 | ||||||
| 19 | 06:56 | SE 6 | 16.09 | Fair | CLR | -9.4 | -10.6 | -6.1 | -9.4 | 91% | 76.12 | 1017.3 | |||||
| 19 | 05:56 | Calm | 16.09 | Fair | CLR | -7.8 | -9.4 | 88% | 76.1 | 1016.7 | |||||||
| 19 | 04:56 | SE 6 | 16.09 | A Few Clouds | FEW100 | -7.2 | -8.3 | 92% | 76.07 | 1016.3 | |||||||
| 19 | 03:56 | Calm | 16.09 | Overcast | OVC110 | -6.7 | -8.3 | 89% | 76.1 | 1016.6 | |||||||
| 19 | 02:56 | Calm | 16.09 | A Few Clouds | FEW120 | -9.4 | -11.1 | 88% | 76.12 | 1017.1 | |||||||
| 19 | 01:56 | Calm | 16.09 | Fair | CLR | -8.3 | -10.6 | 84% | 76.1 | 1016.6 | |||||||
| 19 | 00:56 | Calm | 16.09 | Fair | CLR | -7.2 | -8.9 | -2.2 | -7.2 | 88% | 76 | 1015.1 | |||||
| 18 | 23:56 | W 6 | 16.09 | Fair | CLR | -6.7 | -8.3 | 89% | 76.07 | 1016.3 | |||||||
| 18 | 22:56 | Calm | 16.09 | Fair | CLR | -6.7 | -8.3 | 89% | 76.07 | 1016.1 | |||||||
| 18 | 21:56 | NW 6 | 16.09 | Fair | CLR | -6.1 | -7.2 | 92% | 76.07 | 1016.4 | |||||||
| 18 | 20:56 | NW 7 | 16.09 | Fair | CLR | -5.6 | -7.2 | 89% | -9 | 76.05 | 1016.0 | ||||||
| 18 | 19:56 | N 6 | 16.09 | Fair | CLR | -3.9 | -6.7 | 81% | 76.02 | 1015.6 | |||||||
| 18 | 18:56 | N 6 | 16.09 | Overcast | OVC075 | -2.2 | -4.4 | 1.7 | -2.2 | 85% | 76.05 | 1016.0 | |||||
| 18 | 17:56 | Vrbl 7 | 16.09 | Overcast | OVC050 | -1.7 | -3.9 | 85% | -4 | 76.07 | 1016.1 | ||||||
| 18 | 16:56 | Vrbl 9 | 12.87 | Light Snow | BKN037 OVC048 | -1.1 | -3.9 | 82% | -4 | 76 | 1015.2 | ||||||
| 18 | 15:56 | NW 19 G 28 | 16.09 | Unknown Precip | OVC027 | 0 | -1.7 | 88% | -5 | 75.95 | 1014.4 | ||||||
| 18 | 14:56 | Vrbl 7 | 16.09 | Overcast | SCT027 OVC034 | 0 | -1.1 | 92% | -2 | 75.92 | 1014.0 | ||||||
| 18 | 13:56 | Vrbl 7 | 16.09 | Overcast | OVC026 | 0.6 | -0.6 | 92% | -1 | 76 | 1015.0 | ||||||
| 18 | 12:56 | N 6 | 16.09 | Overcast | OVC017 | 1.7 | 1.7 | 2.2 | 0.6 | 100% | 76.05 | 1015.9 | 0.05 | ||||
| Date | Time (est) | Wind (kph) | Vis. (km) | Weather | Sky Cond. | Air | Dwpt | Max. | Min. | Relative Humidity | Wind Chill (°C) | Heat Index (°C) | altimeter (cm) | sea level (mb) | 1 hr | 3 hr | 6 hr |
| 6 hour | |||||||||||||||||
| Temperature (ºC) | Pressure | Precipitation (cm) | |||||||||||||||