Weather observations for the past three days for
Gaithersburg - Montgomery County Airport
| Date | Time (edt) | Wind (mph) | Vis. (mi.) | Weather | Sky Cond. | Temperature (ºF) | Relative Humidity | Wind Chill (°F) | Heat Index (°F) | Pressure | Precipitation (in) | ||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Air | Dwpt | 6 hour | altimeter (in) | sea level (mb) | 1 hr | 3 hr | 6 hr | ||||||||||
| Max. | Min. | ||||||||||||||||
| 11 | 17:56 | S 9 G 20 | 10.00 | Fair | CLR | 82 | 59 | 46% | 82 | 29.72 | 1007.3 | ||||||
| 11 | 16:56 | S 12 G 20 | 10.00 | Partly Cloudy | SCT120 | 82.9 | 59 | 44% | 83 | 29.72 | 1007.5 | ||||||
| 11 | 15:56 | S 8 | 10.00 | Fair | CLR | 84 | 59 | 43% | 84 | 29.76 | 1008.7 | ||||||
| 11 | 14:56 | S 12 | 10.00 | Fair | CLR | 82 | 59 | 46% | 82 | 29.8 | 1010.0 | ||||||
| 11 | 13:56 | SW 8 | 10.00 | Partly Cloudy | SCT110 | 77 | 57.9 | 77 | 57.9 | 52% | 79 | 29.85 | 1011.9 | ||||
| 11 | 12:56 | S 8 | 10.00 | Mostly Cloudy | FEW044 BKN110 | 75 | 57.9 | 55% | 78 | 29.89 | 1013.0 | ||||||
| 11 | 11:56 | S 9 | 10.00 | Mostly Cloudy | BKN100 | 73 | 57 | 57% | 29.91 | 1013.8 | |||||||
| 11 | 10:56 | Calm | 10.00 | Overcast | BKN070 BKN090 OVC110 | 69.1 | 57 | 66% | 29.93 | 1014.5 | |||||||
| 11 | 09:56 | S 5 | 10.00 | Overcast | BKN075 OVC120 | 68 | 55 | 63% | 29.94 | 1014.7 | |||||||
| 11 | 08:56 | S 7 | 10.00 | Fair | CLR | 66.9 | 54 | 63% | 29.93 | 1014.5 | |||||||
| 11 | 07:56 | SE 3 | 10.00 | Fair | CLR | 57.9 | 52 | 64 | 57 | 81% | 29.92 | 1014.3 | |||||
| 11 | 06:56 | SE 3 | 10.00 | Fair | CLR | 57.9 | 52 | 81% | 29.93 | 1014.6 | |||||||
| 11 | 05:56 | SE 3 | 10.00 | Fair | CLR | 59 | 51.1 | 75% | 29.93 | 1014.7 | |||||||
| 11 | 04:56 | S 5 | 10.00 | Fair | CLR | 61 | 51.1 | 70% | 29.93 | 1014.6 | |||||||
| 11 | 03:56 | SE 5 | 10.00 | Fair | CLR | 61 | 50 | 67% | 29.95 | 1015.0 | |||||||
| 11 | 02:56 | Calm | 10.00 | Partly Cloudy | SCT110 | 61 | 48.9 | 65% | 29.96 | 1015.6 | |||||||
| 11 | 01:56 | SE 3 | 10.00 | A Few Clouds | FEW120 | 64 | 48 | 73 | 63 | 56% | 29.97 | 1015.8 | |||||
| 11 | 00:56 | S 3 | 10.00 | Fair | CLR | 66.9 | 46.9 | 49% | 29.98 | 1016.1 | |||||||
| 10 | 23:56 | SE 8 | 10.00 | Fair | CLR | 66.9 | 46 | 47% | 30 | 1016.7 | |||||||
| 10 | 22:56 | SE 7 | 10.00 | Fair | CLR | 66 | 46 | 49% | 30 | 1016.8 | |||||||
| 10 | 21:56 | SE 6 | 10.00 | Fair | CLR | 69.1 | 46 | 44% | 29.99 | 1016.8 | |||||||
| 10 | 20:56 | SE 7 | 10.00 | Fair | CLR | 70 | 45 | 41% | 30 | 1017.0 | |||||||
| 10 | 19:56 | SE 5 | 10.00 | Fair | CLR | 73 | 45 | 84.9 | 73 | 37% | 29.99 | 1016.7 | |||||
| 10 | 18:56 | S 5 | 10.00 | Fair | CLR | 78.1 | 44.1 | 30% | 78 | 29.98 | 1016.4 | ||||||
| 10 | 17:56 | S 8 | 10.00 | Fair | CLR | 82.9 | 42.1 | 24% | 81 | 29.97 | 1016.1 | ||||||
| 10 | 16:56 | S 8 | 10.00 | Fair | CLR | 84 | 45 | 25% | 82 | 29.98 | 1016.3 | ||||||
| 10 | 15:56 | SW 8 | 10.00 | Fair | CLR | 84 | 48 | 29% | 82 | 29.98 | 1016.3 | ||||||
| 10 | 14:56 | S 6 | 10.00 | Fair | CLR | 82.9 | 48.9 | 31% | 81 | 30.01 | 1017.1 | ||||||
| 10 | 13:56 | SW 8 | 10.00 | Fair | CLR | 82.9 | 48 | 82.9 | 44.1 | 30% | 81 | 30.03 | 1017.8 | ||||
| 10 | 12:56 | SE 8 | 10.00 | Fair | CLR | 82.9 | 46 | 27% | 81 | 30.04 | 1018.4 | ||||||
| 10 | 11:56 | S 5 | 10.00 | Fair | CLR | 81 | 43 | 26% | 80 | 30.06 | 1019.0 | ||||||
| 10 | 10:56 | SW 5 | 10.00 | Fair | CLR | 72 | 41 | 33% | 30.08 | 1019.7 | |||||||
| 10 | 09:56 | SW 3 | 10.00 | Fair | CLR | 64 | 45 | 50% | 30.08 | 1020.0 | |||||||
| 10 | 08:56 | Calm | 10.00 | Fair | CLR | 51.1 | 50 | 96% | 30.07 | 1019.7 | |||||||
| 10 | 07:56 | Calm | 10.00 | Fair | CLR | 45 | 45 | 50 | 43 | 100% | 30.05 | 1019.2 | |||||
| 10 | 06:56 | Calm | 10.00 | Fair | CLR | 45 | 45 | 100% | 30.05 | 1018.9 | |||||||
| 10 | 05:56 | Calm | 10.00 | Fair | CLR | 45 | 45 | 100% | 30.04 | 1018.7 | |||||||
| 10 | 04:56 | Calm | 10.00 | Fair | CLR | 44.1 | 44.1 | 100% | 30.03 | 1018.2 | |||||||
| 10 | 03:56 | Calm | 10.00 | Fair | CLR | 46 | 46 | 100% | 30.03 | 1018.2 | |||||||
| 10 | 02:56 | Calm | 10.00 | Fair | CLR | 48 | 46 | 93% | 30.03 | 1018.2 | |||||||
| 10 | 01:56 | Calm | 10.00 | Fair | CLR | 48.9 | 45 | 64.9 | 48 | 86% | 30.03 | 1018.2 | |||||
| 10 | 00:56 | Calm | 10.00 | Fair | CLR | 51.1 | 44.1 | 77% | 30.03 | 1018.1 | |||||||
| 09 | 23:56 | Calm | 10.00 | Fair | CLR | 52 | 42.1 | 69% | 30.03 | 1018.2 | |||||||
| 09 | 22:56 | Calm | 10.00 | Fair | CLR | 54 | 41 | 62% | 30.02 | 1017.9 | |||||||
| 09 | 21:56 | SE 6 | 10.00 | Fair | CLR | 57.9 | 41 | 53% | 30.01 | 1017.4 | |||||||
| 09 | 20:56 | SE 3 | 10.00 | Fair | CLR | 63 | 41 | 45% | 30 | 1017.1 | |||||||
| 09 | 19:56 | S 3 | 10.00 | Fair | CLR | 64.9 | 41 | 77 | 64.9 | 42% | 29.99 | 1016.9 | |||||
| 09 | 18:56 | SW 3 | 10.00 | Fair | CLR | 72 | 39.9 | 31% | 29.99 | 1016.7 | |||||||
| 09 | 17:56 | W 7 | 10.00 | Fair | CLR | 75 | 39.9 | 28% | 77 | 29.98 | 1016.4 | ||||||
| 09 | 16:56 | SW 7 | 10.00 | Fair | CLR | 75 | 41 | 29% | 77 | 29.98 | 1016.5 | ||||||
| 09 | 15:56 | SW 10 G 16 | 10.00 | Fair | CLR | 75 | 41 | 29% | 77 | 29.99 | 1017.0 | ||||||
| 09 | 14:56 | SW 9 | 10.00 | Fair | CLR | 75 | 42.1 | 31% | 77 | 30 | 1017.1 | ||||||
| 09 | 13:56 | S 9 G 17 | 10.00 | Fair | CLR | 73.9 | 39 | 73.9 | 39.9 | 28% | 30.02 | 1017.7 | |||||
| 09 | 12:56 | S 12 | 10.00 | Fair | CLR | 73 | 39 | 29% | 30.06 | 1019.2 | |||||||
| 09 | 11:56 | Vrbl 5 | 10.00 | Fair | CLR | 70 | 39 | 32% | 30.09 | 1020.0 | |||||||
| 09 | 10:56 | Vrbl 3 | 10.00 | Fair | CLR | 66 | 39 | 37% | 30.1 | 1020.5 | |||||||
| 09 | 09:56 | W 3 | 10.00 | Fair | CLR | 57.9 | 39 | 50% | 30.12 | 1021.3 | |||||||
| 09 | 07:56 | Calm | 10.00 | Fair | CLR | 39.9 | 37.9 | 51.1 | 39.9 | 93% | 30.07 | 1019.7 | |||||
| 09 | 06:56 | Calm | 10.00 | Fair | CLR | 41 | 37 | 86% | 30.04 | 1018.7 | |||||||
| 09 | 05:56 | SE 3 | 10.00 | Fair | CLR | 43 | 36 | 76% | 30.02 | 1017.8 | |||||||
| 09 | 04:56 | Calm | 10.00 | Fair | CLR | 43 | 35.1 | 74% | 30 | 1017.2 | |||||||
| 09 | 03:56 | Calm | 10.00 | Fair | CLR | 46 | 35.1 | 66% | 29.99 | 1016.8 | |||||||
| 09 | 02:56 | Calm | 10.00 | Fair | CLR | 46 | 36 | 68% | 30 | 1017.1 | |||||||
| 09 | 01:56 | Calm | 10.00 | Fair | CLR | 48 | 34 | 63 | 45 | 58% | 30.01 | 1017.4 | |||||
| 09 | 00:56 | Calm | 10.00 | Fair | CLR | 48.9 | 34 | 56% | 30 | 1017.2 | |||||||
| 08 | 23:56 | Calm | 10.00 | Fair | CLR | 48 | 37.9 | 68% | 30 | 1017.1 | |||||||
| 08 | 22:56 | Calm | 10.00 | Fair | CLR | 50 | 37.9 | 63% | 29.99 | 1016.8 | |||||||
| 08 | 21:56 | SE 6 | 10.00 | Fair | CLR | 52 | 39.9 | 64% | 29.97 | 1016.1 | |||||||
| 08 | 20:56 | Calm | 10.00 | Fair | CLR | 54 | 44.1 | 69% | 29.94 | 1015.2 | |||||||
| 08 | 19:56 | NW 6 | 10.00 | Fair | CLR | 62.1 | 41 | 72 | 62.1 | 46% | 29.93 | 1014.7 | |||||
| 08 | 18:56 | NW 7 | 10.00 | Fair | CLR | 66.9 | 45 | 45% | 29.91 | 1014.0 | |||||||
| Date | Time (edt) | Wind (mph) | Vis. (mi.) | Weather | Sky Cond. | Air | Dwpt | Max. | Min. | Relative Humidity | Wind Chill (°F) | Heat Index (°F) | altimeter (in) | sea level (mb) | 1 hr | 3 hr | 6 hr |
| 6 hour | |||||||||||||||||
| Temperature (ºF) | Pressure | Precipitation (in) | |||||||||||||||