Weather observations for the past three days for
Gaithersburg - Montgomery County Airport
Imperial (Metric)
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 18:56 Calm 10.00 Fair CLR 61 30 31% 30.12 1021.1
11 17:56 Calm 10.00 Fair CLR 62.1 32 32% 30.11 1020.9
11 16:56 Vrbl 3 10.00 Fair CLR 62.1 32 32% 30.11 1020.6
11 15:56 Vrbl 5 10.00 Fair CLR 62.1 37 40% 30.12 1021.1
11 14:56 Calm 10.00 Fair CLR 55.9 37 49% 30.14 1022.1
11 13:56 Calm 10.00 Fair CLR 55.9 37.9 55.9 51.1 51% 30.16 1022.8
11 12:56 W 3 10.00 Overcast OVC110 54 37 53% 30.18 1023.4
11 11:56 Calm 10.00 Mostly Cloudy BKN120 54 36 51% 30.19 1023.6
11 10:56 NW 3 10.00 Overcast OVC110 53.1 37 55% 30.2 1024.0
11 09:56 Calm 10.00 Overcast FEW050 BKN070 OVC085 52 39.9 64% 30.17 1022.9
11 08:56 Calm 10.00 Light Rain BKN070 OVC080 51.1 41 69% 30.17 1022.9
11 07:56 Vrbl 3 10.00 Overcast FEW070 OVC090 52 37.9 57 52 59% 30.16 1022.6
11 06:56 Calm 10.00 Mostly Cloudy BKN095 BKN120 52 37 57% 30.14 1021.8
11 05:56 Calm 10.00 Overcast OVC090 52 37 57% 30.11 1021.0
11 04:56 Vrbl 3 10.00 Overcast OVC075 53.1 39 59% 30.1 1020.6
11 03:56 Vrbl 5 10.00 Overcast OVC070 54 41 62% 30.1 1020.3
11 02:56 Vrbl 5 10.00 Overcast OVC080 54 44.1 69% 30.08 1019.7
11 01:56 Vrbl 3 10.00 Overcast OVC090 57 57 62.1 57 100% 30.08 1019.7
11 00:56 Calm 10.00 Mostly Cloudy SCT080 BKN100 57.2 0 0% 30.07 1019.4
10 23:56 Calm 9.00 Mostly Cloudy BKN060 59 0 0% 30.06 1018.8
10 22:56 Calm 6.00 Overcast with Haze SCT019 OVC055 60.8 0 0% 30.06 1019.1
10 21:56 Calm 10.00 Light Rain BKN060 OVC090 60.8 0 0% 30.05 1018.7
10 20:56 Calm 10.00 Overcast SCT080 OVC100 60.8 0 0% 30.02 1017.7
10 19:56 Calm 10.00 Overcast BKN085 OVC100 62.6 0 82 62.1 0% 30 1017.1 0.01 0.06
10 18:56 Calm 10.00 Overcast OVC085 62.6 0 0% 29.97 1016.3 0.01
10 17:56 Calm 10.00 Overcast BKN090 OVC110 64.4 0 0% 29.95 1015.4 0.02
10 16:56 Vrbl 5 6.00 Rain Fog/Mist BKN075 OVC090 64.9 64 97% 29.95 1015.6 0.02 0.02
10 15:56 W 8 10.00 Overcast BKN075 OVC100 75 48.9 40% 77 29.92 1014.2
10 14:56 NW 8 10.00 Mostly Cloudy SCT075 BKN090 78.1 50 37% 79 29.93 1014.5
10 13:56 Vrbl 3 10.00 Fair CLR 80.1 52 80.1 61 38% 80 29.94 1014.7
10 12:56 SW 13 G 18 10.00 Fair CLR 80.1 53.1 39% 80 29.95 1015.1
10 11:56 NW 9 10.00 Fair CLR 75.9 55 48% 78 29.95 1015.4
10 10:56 W 9 10.00 Fair CLR 73.9 52 46% 29.95 1015.4
10 09:56 W 5 10.00 Fair CLR 72 53.1 52% 29.94 1015.0
10 08:56 Calm 10.00 Fair CLR 66 55 68% 29.94 1015.0
10 07:56 Calm 10.00 Fair CLR 60.1 59 60.1 48 96% 29.94 1014.9
10 06:56 Calm 3.00 Fog/Mist CLR 50 0 0% 29.92 1014.4
10 05:56 SE 3 4.00 Fair with Haze CLR 50 0 0% 29.88 1013.2
10 04:56 Calm 4.00 Fair with Haze CLR 48.2 0 0% 29.88 1013.3
10 03:56 Calm 5.00 Fair with Haze CLR 50 0 0% 29.88 1013.0
10 02:56 Calm 10.00 Fair CLR 51.8 0 0% 29.85 1012.2
10 01:56 Calm 10.00 Fair CLR 53.6 0 69.1 54 0% 29.85 1011.9
10 00:56 Calm 10.00 Fair CLR 55.9 55.9 100% 29.85 1012.2
09 23:56 Calm 10.00 Fair CLR 57 57 100% 29.85 1012.2
09 22:56 Calm 10.00 Fair CLR 59 57 93% 29.85 1012.0
09 21:56 Calm 10.00 Fair CLR 61 57 87% 29.84 1011.6
09 20:56 Vrbl 3 10.00 A Few Clouds FEW080 64 55 73% 29.81 1010.8
09 19:56 Calm 10.00 Overcast OVC080 69.1 52 73.9 66 55% 29.8 1010.3
09 18:56 Calm 10.00 Mostly Cloudy BKN090 73.9 50 43% 29.8 1010.0
09 17:56 W 8 10.00 Overcast BKN095 OVC110 71.1 51.1 49% 29.79 1009.9
09 16:56 Calm 10.00 Mostly Cloudy BKN050 BKN060 BKN110 71.1 52 51% 29.8 1010.0
09 15:56 S 8 10.00 Mostly Cloudy BKN120 73 52 48% 29.8 1010.1
09 14:56 Calm 10.00 Mostly Cloudy BKN044 72 51.1 48% 29.82 1010.7
09 13:56 Calm 10.00 Mostly Cloudy BKN100 BKN120 68 48.9 68 60.1 51% 29.86 1012.1
09 12:56 Vrbl 6 10.00 Overcast BKN045 OVC070 66 48 52% 29.86 1012.4
09 11:56 Vrbl 5 10.00 Overcast BKN050 OVC075 66.9 46.9 49% 29.87 1012.6
09 10:56 S 5 10.00 A Few Clouds FEW090 64.9 46 51% 29.88 1013.0
09 09:56 S 5 10.00 Mostly Cloudy BKN110 61 44.1 54% 29.88 1013.2
09 08:56 S 8 10.00 Mostly Cloudy BKN090 61 43 52% 29.89 1013.2
09 07:56 S 6 10.00 Overcast FEW070 OVC100 60.1 42.1 60.1 57 52% 29.88 1013.0
09 06:56 Calm 10.00 Mostly Cloudy BKN110 57 41 55% 29.87 1012.5
09 05:56 Vrbl 5 10.00 Overcast OVC110 57.9 39 50% 29.86 1012.3
09 04:56 SW 7 10.00 Overcast OVC110 57.9 39 50% 29.87 1012.6
09 03:56 S 9 10.00 Overcast OVC110 57.9 39 50% 29.88 1013.1
09 02:56 S 7 10.00 Partly Cloudy SCT120 59 37.9 46% 29.88 1013.0
09 01:56 S 5 10.00 Fair CLR 57 39 66.9 57 51% 29.89 1013.5
09 00:56 S 8 10.00 Fair CLR 60.1 37 42% 29.9 1013.5
08 23:56 S 6 10.00 Fair CLR 60.1 37.9 44% 29.9 1013.7
08 22:56 S 5 10.00 Fair CLR 60.1 39.9 48% 29.91 1014.1
08 21:56 S 5 10.00 Fair CLR 61 39 44% 29.91 1014.1
08 20:56 SE 5 10.00 Overcast OVC100 64.9 39 39% 29.9 1013.8
08 19:56 SW 6 10.00 Overcast OVC110 66.9 36 72 64.9 32% 29.89 1013.3
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)