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.
30 10:56 SW 10 10.00 Overcast OVC017 78.1 72 82% 80 30.2 1023.7
30 09:56 SW 7 10.00 Overcast OVC013 75.9 72 88% 76 30.21 1023.9
30 08:56 SW 6 10.00 Overcast OVC009 73.9 73 97% 30.22 1024.5
30 07:56 SW 5 10.00 Overcast OVC007 72 72 72 66 100% 30.22 1024.5
30 06:56 S 6 9.00 Overcast OVC005 71.6 0 0% 30.22 1024.3
30 05:56 S 8 10.00 Overcast OVC007 72 72 100% 30.22 1024.1
30 04:56 Calm 10.00 Overcast OVC009 70 66.9 90% 30.22 1024.1
30 03:56 Calm 10.00 Overcast BKN020 BKN027 OVC090 66 64.9 96% 30.22 1024.5
30 02:56 SE 3 10.00 Overcast FEW022 BKN027 OVC031 68 63 84% 30.23 1024.5
30 01:56 SE 5 10.00 Overcast BKN031 OVC046 66.9 64 72 64.9 91% 30.24 1025.0
30 00:56 Calm 10.00 Partly Cloudy FEW035 SCT075 64.9 63 93% 30.24 1025.1
29 23:56 Calm 10.00 Partly Cloudy SCT075 66 62.1 87% 30.23 1024.7
29 22:56 Calm 10.00 Mostly Cloudy BKN080 68 62.1 81% 30.23 1024.9
29 21:56 Calm 10.00 Partly Cloudy SCT080 68 63 84% 30.23 1024.7
29 20:56 Calm 10.00 Fair CLR 70 63 79% 30.21 1024.1
29 19:56 Calm 10.00 Fair CLR 72 62.1 84 72 71% 30.21 1023.8
29 18:56 Calm 10.00 A Few Clouds FEW060 78.1 62.1 58% 80 30.21 1024.1
29 17:56 Calm 10.00 Partly Cloudy SCT060 79 62.1 56% 80 30.21 1024.2
29 16:56 Calm 10.00 Fair CLR 82 61 49% 83 30.21 1024.1
29 15:56 Calm 10.00 Fair CLR 82 60.1 47% 82 30.24 1025.1
29 14:56 Calm 10.00 Fair CLR 81 59 47% 81 30.26 1025.5
29 13:56 Calm 10.00 Fair CLR 80.1 57.9 82 64 47% 81 30.27 1025.9
29 12:56 Calm 10.00 Fair CLR 78.1 55.9 47% 79 30.29 1026.6
29 11:56 Calm 10.00 Fair CLR 75.9 57 52% 78 30.29 1026.9
29 10:56 Vrbl 3 10.00 Mostly Cloudy BKN047 73.9 55.9 54% 30.29 1026.7
29 09:56 Vrbl 3 10.00 A Few Clouds FEW047 70 55.9 61% 30.28 1026.3
29 08:56 Vrbl 3 10.00 A Few Clouds FEW044 66.9 55.9 68% 30.26 1025.9
29 07:56 Calm 10.00 Mostly Cloudy BKN043 64 61 66.9 61 90% 30.26 1025.7
29 06:56 Calm 10.00 Fair CLR 62.1 62.1 100% 30.25 1025.3
29 05:56 Calm 10.00 Fair CLR 63 63 100% 30.22 1024.3
29 04:56 Calm 10.00 Fair CLR 64 64 100% 30.2 1023.7
29 03:56 Vrbl 3 10.00 Fair CLR 66 64 93% 30.18 1022.9
29 02:56 Calm 10.00 Fair CLR 66.9 66 97% 30.16 1022.1
29 01:56 Calm 10.00 Fair CLR 66 66 77 66 100% 30.15 1021.8
29 00:56 Calm 10.00 Fair CLR 66.2 0 0% 30.15 1021.8
28 23:56 Calm 10.00 Fair CLR 66.2 0 0% 30.13 1021.3
28 22:56 Calm 10.00 Fair CLR 68 0 0% 30.13 1021.1
28 21:56 Calm 10.00 Fair CLR 69.1 69.1 100% 30.12 1020.8
28 20:56 Calm 10.00 Fair CLR 72 71.1 97% 30.1 1020.2
28 19:56 Calm 10.00 Partly Cloudy SCT085 77 68 86 77 74% 79 30.07 1019.3
28 18:56 Calm 10.00 Fair CLR 80.1 68 67% 83 30.06 1018.9
28 17:56 Vrbl 3 10.00 Fair CLR 82.9 68 61% 86 30.06 1018.8
28 16:56 Calm 10.00 A Few Clouds FEW065 81 69.1 67% 84 30.05 1018.5
28 15:56 Vrbl 5 10.00 Mostly Cloudy SCT047 BKN055 BKN100 82 69.1 65% 85 30.05 1018.3
28 14:56 Vrbl 6 10.00 Partly Cloudy FEW043 SCT050 86 69.1 57% 90 30.04 1018.2
28 13:56 Vrbl 3 8.00 Partly Cloudy SCT034 84.9 71.1 84.9 70 63% 90 30.06 1018.6
28 12:56 Vrbl 3 10.00 A Few Clouds FEW120 82 71.1 69% 86 30.06 1018.8
28 11:56 Vrbl 5 10.00 A Few Clouds FEW120 82.9 71.1 67% 88 30.07 1019.1
28 10:56 NW 3 10.00 Fair CLR 79 72 79% 82 30.07 1019.3
28 09:56 NW 6 10.00 Partly Cloudy SCT100 75.9 73 91% 76 30.06 1018.7
28 08:56 NW 6 10.00 Mostly Cloudy BKN009 71.1 71.1 100% 30.04 1018.2
28 07:56 W 3 10.00 Overcast SCT009 BKN013 OVC090 69.8 0 70 68 0% 30.02 1017.6
28 06:56 Calm 9.00 Mostly Cloudy FEW007 BKN090 68 0 0% 30 1016.6
28 05:56 Calm 9.00 Fair CLR 68 0 0% 29.98 1016.1
28 04:56 NW 3 9.00 Partly Cloudy SCT016 69.8 0 0% 29.98 1016.1
28 03:56 Calm 10.00 Overcast OVC016 69.8 0 0% 29.98 1015.9
28 02:56 Calm 10.00 Overcast OVC018 68 0 0% 29.98 1016.1
28 01:56 Calm 10.00 Fair CLR 68 0 75.9 66.9 0% 29.98 1016.1 0.53
28 00:56 Calm 10.00 A Few Clouds FEW016 68 0 0% 29.99 1016.5
27 23:56 Calm 7.00 Fair CLR 68 0 0% 29.98 1016.1
27 22:56 Calm 9.00 Fair CLR 69.8 0 0% 29.97 1015.9 0.53
27 21:56 SE 9 10.00 Thunderstorm in Vicinity CLR 71.1 71.1 100% 29.98 1016.1
27 20:56 Vrbl 3 10.00 Thunderstorm in Vicinity Light Rain FEW110 69.1 68 96% 29.96 1015.7 0.53
27 19:56 NW 12 10.00 Thunderstorm Light Rain FEW027 BKN035 BKN048 75.9 69.1 89.1 75.9 79% 77 29.99 1016.3 0.01 0.01
27 18:56 S 10 G 16 9.00 Fair CLR 82 70 67% 86 29.95 1014.9
27 17:56 S 9 10.00 A Few Clouds FEW044 82.9 69.1 63% 87 29.94 1014.6
27 16:56 S 12 G 17 10.00 A Few Clouds FEW039 84.9 70 61% 89 29.93 1014.3
27 15:56 S 12 10.00 Mostly Cloudy BKN037 BKN046 BKN055 86 72 63% 92 29.95 1015.0
27 14:56 S 9 10.00 Partly Cloudy SCT037 SCT050 88 71.1 57% 94 29.97 1015.6
27 13:56 Vrbl 7 10.00 Partly Cloudy SCT033 87.1 72 87.1 73.9 61% 94 29.98 1016.1
27 12:56 S 7 10.00 A Few Clouds FEW065 84.9 72 65% 91 30 1016.7
27 11:56 S 7 10.00 Fair CLR 82.9 72 70% 88 30.01 1017.0
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)