Weather observations for the past three days for
Gaithersburg - Montgomery County Airport
Imperial (Metric)
Date Time (est) 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.
30 14:56 NW 10 G 17 10.00 Fair CLR 19 -0.9 41% 8 30.23 1026.2
30 13:56 NW 8 10.00 Fair CLR 19.9 -0 41% 11 30.25 1026.9
30 12:56 NW 14 10.00 Fair CLR 21 -0 21.9 1.9 39% 9 30.26 1027.4
30 11:56 NW 10 G 23 10.00 Fair CLR 21.9 1 40% 12 30.28 1028.0
30 10:56 NW 9 10.00 Fair CLR 19.9 -0 41% 10 30.31 1028.8
30 09:56 NW 8 10.00 Fair CLR 16 -0 49% 6 30.31 1028.9
30 08:56 NW 12 10.00 Fair CLR 10.9 1.9 67% -2 30.3 1028.6
30 07:56 NW 5 10.00 Fair CLR 6.1 -2 69% -2 30.28 1028.1
30 06:56 NW 6 10.00 Fair CLR 1.9 -6 9 -0 69% -8 30.26 1027.6
30 05:56 NW 3 10.00 Fair CLR 3 -4 72% 30.26 1027.3
30 04:56 NW 3 10.00 Fair CLR 1.9 -7.1 65% 30.26 1027.3
30 03:56 NW 3 10.00 Fair CLR 5 -5.1 63% 30.25 1027.1
30 02:56 NW 5 10.00 Fair CLR 8.1 -0.9 66% 0 30.24 1026.8
30 01:56 W 8 10.00 Fair CLR 9 -0 66% -2 30.24 1026.5
30 00:56 NW 5 10.00 Fair CLR 7 -2.9 16 6.1 63% -1 30.23 1026.4
29 23:56 Calm 10.00 Fair CLR 8.1 -2 63% 30.24 1026.7
29 22:56 NW 6 10.00 Fair CLR 10.9 -0.9 58% 2 30.24 1026.6
29 21:56 NW 6 10.00 Fair CLR 12.9 -0 56% 5 30.24 1026.6
29 20:56 NW 9 10.00 Fair CLR 14 1 56% 3 30.25 1026.8
29 19:56 NW 7 10.00 Fair CLR 15.1 1.9 56% 6 30.24 1026.6
29 18:56 W 5 10.00 Fair CLR 16 1.9 24.1 16 54% 10 30.23 1026.2
29 17:56 W 8 10.00 Fair CLR 18 1.9 49% 9 30.21 1025.6
29 16:56 W 9 10.00 Partly Cloudy SCT050 19.9 3 48% 10 30.2 1025.3
29 15:56 NW 13 G 21 10.00 Mostly Cloudy BKN048 21 3.9 47% 10 30.19 1024.9
29 14:56 W 9 10.00 Overcast OVC046 21 3 45% 11 30.2 1025.1
29 13:56 NW 10 10.00 Mostly Cloudy BKN046 23 5 46% 13 30.2 1025.0
29 12:56 W 21 G 26 10.00 Partly Cloudy and Breezy SCT044 21.9 3 23 6.1 44% 7 30.2 1025.1
29 11:56 NW 10 G 18 10.00 Partly Cloudy SCT044 21.9 3 44% 12 30.22 1025.9
29 10:56 W 12 10.00 Fair CLR 21 1.9 43% 10 30.23 1026.2
29 09:56 Vrbl 7 10.00 Fair CLR 19.9 1.9 45% 12 30.24 1026.5
29 08:56 W 6 10.00 Fair CLR 16 1.9 54% 8 30.24 1026.4
29 06:56 Calm 10.00 Fair CLR 8.1 -2.9 10.9 6.1 60% 30.2 1025.4
29 05:56 NW 7 10.00 Fair CLR 9 -2 61% -1 30.18 1024.7
29 04:56 NW 12 G 17 10.00 Fair CLR 10.9 -0.9 58% -2 30.16 1023.8
29 03:56 NW 7 10.00 Fair CLR 10 -0 63% 0 30.15 1023.4
29 02:56 NW 5 10.00 Fair CLR 10 -0 63% 3 30.14 1023.1
29 01:56 W 6 10.00 Fair CLR 7 -4 60% -2 30.12 1022.4
29 00:56 Calm 10.00 Fair CLR 7 -0.9 16 7 70% 30.1 1021.8
28 23:56 Calm 10.00 Fair CLR 9 -2 61% 30.1 1021.7
28 22:56 NW 5 10.00 A Few Clouds FEW047 10.9 -0.9 58% 4 30.1 1021.8
28 21:56 Calm 10.00 Fair CLR 14 1.9 58% 30.1 1021.7
28 20:56 NW 6 10.00 Fair CLR 16 3.9 59% 8 30.09 1021.2
28 19:56 Calm 10.00 Mostly Cloudy BKN050 10.9 -0 61% 30.08 1021.5
28 18:56 Calm 10.00 Fair CLR 12 -0.9 24.1 12 56% 30.08 1021.3
28 17:56 Calm 10.00 Fair CLR 16 -0 49% 30.07 1020.7
28 16:56 Calm 10.00 Fair CLR 21 3.9 47% 30.05 1020.1
28 15:56 W 7 10.00 Fair CLR 21.9 6.1 50% 14 30.05 1020.0
28 14:56 Calm 10.00 Fair CLR 23 5 46% 30.07 1020.6
28 13:56 W 8 10.00 A Few Clouds FEW043 23 6.1 48% 15 30.09 1021.2
28 12:56 W 10 10.00 Fair CLR 21.9 5 27 8.1 48% 12 30.13 1022.6
28 10:56 NW 10 10.00 Fair CLR 23 3.9 44% 13 30.2 1025.2
28 09:56 NW 6 10.00 Fair CLR 21 3 45% 14 30.22 1025.9
28 08:56 Vrbl 3 10.00 Fair CLR 19 5 54% 30.24 1026.6
28 07:56 Calm 10.00 Fair CLR 9 -2 61% 30.24 1026.7
28 06:56 Calm 10.00 Fair CLR 10 -2 17.1 10 58% 30.23 1026.2
28 05:56 NW 3 10.00 Fair CLR 10.9 -2 56% 30.23 1026.1
28 04:56 W 8 10.00 Fair CLR 12 -2 53% 1 30.23 1026.1
28 03:56 NW 7 10.00 Fair CLR 14 -0.9 51% 5 30.23 1026.0
28 02:56 NW 18 G 24 10.00 Fair CLR 15.1 -0 51% -1 30.2 1025.0
28 01:56 NW 10 10.00 Fair CLR 15.1 1 53% 3 30.19 1024.9
28 00:56 NW 15 10.00 Fair CLR 17.1 3 23 17.1 54% 3 30.16 1023.5
27 23:56 NW 15 G 20 10.00 Mostly Cloudy BKN060 18 3 52% 5 30.15 1023.4
27 22:56 Vrbl 5 10.00 Partly Cloudy FEW050 SCT060 19 5 54% 13 30.14 1023.1
27 21:56 NW 8 G 24 10.00 Overcast BKN047 OVC060 21 7 54% 12 30.13 1022.6
27 20:56 NW 8 10.00 Overcast SCT048 OVC060 21.9 8.1 55% 13 30.11 1022.1
27 19:56 NW 12 G 23 10.00 Fair CLR 21.9 7 52% 11 30.07 1020.8
27 18:56 NW 5 10.00 Fair CLR 23 5 28.9 21.9 46% 18 30.04 1019.8
27 17:56 NW 5 10.00 Overcast OVC060 24.1 5 44% 19 30 1018.2
27 16:56 W 6 10.00 Overcast OVC070 26.1 5 40% 20 29.99 1017.7
27 15:56 W 7 10.00 Overcast BKN065 OVC110 27 3.9 37% 20 29.98 1017.6
Date Time (est) 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)