Weather observations for the past three days for
Gaithersburg - Montgomery County Airport
Metric (Imperial)
Date Time (edt) 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.
10 09:56 Calm 16.09 Fair CLR 12.2 6.7 69% 77.11 1029.7
10 08:56 S 9 16.09 A Few Clouds FEW010 9.4 8.3 93% 8 77.14 1030.0
10 07:56 S 6 11.27 Partly Cloudy SCT004 7 0 7.2 3.9 0% 77.19 1030.7
10 06:56 Calm 11.27 A Few Clouds FEW006 4 0 0% 77.17 1030.4
10 05:56 SE 7 16.09 Fair CLR 5 0 0% 4 77.11 1029.7
10 04:56 SE 9 16.09 Overcast OVC008 5.6 5.6 100% 4 77.11 1029.7
10 03:56 Calm 16.09 Fair CLR 5.6 5.6 100% 77.14 1030.0
10 02:56 Calm 16.09 Fair CLR 6.1 6.1 100% 77.17 1030.3
10 01:56 SE 9 16.09 Fair CLR 7.2 6.1 12.8 6.7 93% 6 77.19 1030.7
10 00:56 SE 6 16.09 Fair CLR 7.8 3.9 77% 77.22 1031.2
09 23:56 Calm 16.09 Fair CLR 7.8 1.7 66% 77.24 1031.6
09 22:56 Calm 16.09 Fair CLR 8.3 1.1 61% 77.27 1031.7
09 21:56 SE 9 16.09 Fair CLR 10 1.1 54% 9 77.27 1031.8
09 20:56 SE 11 16.09 Fair CLR 11.1 1.7 53% 77.24 1031.6
09 19:56 SE 13 16.09 Fair CLR 12.8 2.2 17.8 12.8 49% 77.22 1031.3
09 18:56 SE 17 16.09 Fair CLR 15.6 1.7 39% 77.24 1031.4
09 17:56 S 13 16.09 Fair CLR 17.2 -1.7 28% 77.24 1031.5
09 16:56 SE 11 16.09 Fair CLR 17.2 -2.2 27% 77.27 1031.7
09 15:56 S 13 16.09 Fair CLR 16.7 -2.8 26% 77.32 1032.4
09 14:56 SE 13 G 26 16.09 Fair CLR 15.6 -1.1 32% 77.39 1033.3
09 13:56 Vrbl 6 16.09 Fair CLR 15 -1.7 15 1.1 32% 77.44 1034.1
09 12:56 Vrbl 11 16.09 Fair CLR 12.8 -1.7 37% 77.52 1035.2
09 11:56 S 9 16.09 Fair CLR 12.2 -0.6 42% 77.6 1036.2
09 10:56 Calm 16.09 Fair CLR 9.4 0 52% 77.65 1036.8
09 09:56 Vrbl 7 16.09 A Few Clouds FEW017 7.2 1.7 68% 6 77.67 1037.3
09 08:56 SE 6 16.09 Partly Cloudy SCT014 4.4 2.2 86% 77.67 1037.5
09 07:56 SE 7 16.09 Fair CLR 1.1 0.6 2.8 -1.7 97% -1 77.67 1037.4
09 06:56 Calm 16.09 Fair CLR -1.1 -2.2 92% 77.62 1037.0
09 05:56 Calm 16.09 A Few Clouds FEW013 -1.7 -3.9 85% 77.62 1036.8
09 04:56 Calm 16.09 Fair CLR 0 -1.1 92% 77.6 1036.4
09 03:56 Calm 16.09 Fair CLR 1.1 -0.6 89% 77.6 1036.3
09 02:56 SE 6 16.09 Fair CLR 1.7 0 89% 77.6 1036.4
09 01:56 SE 6 16.09 Fair CLR 2.8 -1.1 7.8 2.8 76% 77.62 1036.6
09 00:56 SE 9 16.09 Fair CLR 3.9 -1.7 67% 2 77.65 1036.9
08 23:56 SE 13 16.09 Fair CLR 5 -2.8 57% 2 77.62 1036.7
08 22:56 SE 11 16.09 Fair CLR 4.4 -3.9 55% 2 77.62 1036.7
08 21:56 SE 9 16.09 Fair CLR 5 -5 49% 3 77.62 1036.9
08 20:56 SE 11 16.09 Fair CLR 6.7 -7.8 35% 5 77.6 1036.4
08 19:56 SE 13 16.09 Fair CLR 7.8 -9.4 12.8 7.8 29% 6 77.55 1035.7
08 18:56 SE 19 16.09 Fair CLR 10 -10 24% 8 77.55 1035.6
08 17:56 SE 7 16.09 Fair CLR 11.7 -8.9 23% 77.52 1035.4
08 16:56 Vrbl 7 16.09 Fair CLR 12.2 -10 20% 77.55 1035.6
08 15:56 Vrbl 6 16.09 Fair CLR 11.7 -9.4 22% 77.57 1036.1
08 14:56 Vrbl 9 16.09 Fair CLR 11.7 -6.7 27% 77.62 1036.5
08 13:56 Vrbl 11 16.09 Fair CLR 10 -7.8 10.6 -0.6 28% 9 77.65 1037.1
08 12:56 Calm 16.09 Fair CLR 9.4 -10.6 23% 77.7 1037.8
08 11:56 Calm 16.09 Fair CLR 8.3 -11.1 24% 77.77 1038.6
08 10:56 Vrbl 7 16.09 Fair CLR 6.7 -10.6 28% 6 77.77 1038.8
08 09:56 NE 9 16.09 Fair CLR 4.4 -10 35% 2 77.77 1038.7
08 08:56 Vrbl 6 16.09 Fair CLR 2.2 -8.9 44% 77.75 1038.3
08 07:56 Calm 16.09 Fair CLR -0.6 -7.8 1.7 -2.2 59% 77.72 1038.0
08 06:56 Calm 16.09 Fair CLR -1.7 -7.8 63% 77.65 1037.0
08 05:56 Calm 16.09 Fair CLR -1.1 -8.3 58% 77.57 1036.1
08 04:56 NE 6 16.09 Fair CLR -0.6 -7.8 59% 77.5 1035.1
08 03:56 Vrbl 6 16.09 Fair CLR 0 -7.8 56% 77.47 1034.5
08 02:56 NE 6 16.09 Fair CLR 1.1 -8.3 50% 77.44 1034.4
08 01:56 N 6 16.09 Fair CLR 1.7 -8.3 6.7 1.7 48% 77.42 1033.9
08 00:56 N 7 16.09 Fair CLR 2.2 -8.3 46% 0 77.42 1034.0
07 23:56 Calm 16.09 Fair CLR 2.8 -8.3 44% 77.42 1034.0
07 22:56 Calm 16.09 Fair CLR 2.8 -7.8 46% 77.37 1033.3
07 21:56 Calm 16.09 Fair CLR 3.3 -6.7 48% 77.34 1032.7
07 20:56 Calm 16.09 Fair CLR 5.6 -8.9 35% 77.29 1032.0
07 19:56 N 6 16.09 Fair CLR 6.7 -9.4 12.2 6.7 31% 77.22 1031.0
07 18:56 Calm 16.09 Fair CLR 9.4 -8.9 27% 77.17 1030.3
07 17:56 Vrbl 11 16.09 Fair CLR 11.1 -8.3 25% 77.09 1029.4
07 16:56 NW 15 G 28 16.09 Fair CLR 11.7 -8.3 24% 77.04 1028.5
07 15:56 W 24 G 33 16.09 Fair CLR 11.1 -8.9 24% 77.01 1028.3
07 14:56 NW 30 G 39 16.09 Fair CLR 11.1 -11.1 20% 77.01 1028.3
07 13:56 NW 20 G 35 16.09 Fair CLR 11.1 -9.4 12.8 7.2 23% 76.99 1028.2
07 12:56 N 13 G 30 16.09 Fair CLR 11.7 -8.9 23% 76.99 1027.9
07 11:56 Vrbl 11 G 39 16.09 Fair CLR 10.6 -5 33% 76.96 1027.8
07 10:56 W 24 G 41 16.09 Mostly Cloudy BKN060 10 -3.3 39% 7 76.94 1027.4
Date Time (edt) 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)