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.
29 08:56 NW 8 10.00 Fair CLR 72 70 94% 29.71 1007.1
29 07:56 NW 6 10.00 Fair CLR 69.8 0 69.1 64.9 0% 29.69 1006.5 0.01
29 06:56 Vrbl 3 9.00 Fair CLR 66.2 0 0% 29.68 1005.8 0.01
29 05:56 NW 5 9.00 Fair CLR 66.2 0 0% 29.66 1005.2
29 04:56 NW 3 10.00 Fair CLR 66.2 0 0% 29.65 1005.0
29 03:56 NW 3 7.00 Fair CLR 66.2 0 0% 29.65 1004.7
29 02:56 Calm 7.00 Fair CLR 66.2 0 0% 29.65 1004.8
29 01:56 Calm 9.00 Fair CLR 66.2 0 71.1 66.9 0% 29.64 1004.6
29 00:56 Calm 10.00 Fair CLR 68 0 0% 29.64 1004.4
28 23:56 Calm 8.00 A Few Clouds FEW003 68 0 0% 29.64 1004.5
28 22:56 Calm 2.50 Fog/Mist FEW002 66.2 0 0% 29.64 1004.6
28 21:56 Calm 10.00 A Few Clouds FEW006 69.8 0 0% 29.64 1004.6
28 20:56 Calm 10.00 Overcast SCT034 BKN043 OVC049 69.8 0 0% 29.63 1004.3
28 19:56 Calm 10.00 Mostly Cloudy BKN041 BKN049 71.6 0 88 68 0% 29.62 1003.8 0.84
28 18:56 S 3 10.00 Partly Cloudy SCT070 SCT080 69.8 0 0% 29.59 1003.0
28 17:56 Vrbl 6 10.00 Thunderstorm Heavy Rain SCT008 BKN021 OVC100 69.8 0 0% 29.64 1004.7 0.74
28 16:56 S 3 10.00 Thunderstorm in Vicinity Light Rain FEW044 BKN070 BKN100 79 78.1 97% 83 29.57 1002.0 0.1 0.1
28 15:56 S 12 10.00 Mostly Cloudy SCT037 SCT044 BKN055 84.9 71.1 63% 90 29.57 1002.2
28 14:56 S 8 10.00 Mostly Cloudy BKN035 BKN050 BKN110 86 71.1 61% 92 29.62 1003.7
28 13:56 Vrbl 7 10.00 Mostly Cloudy BKN029 82.9 72 84.9 75 70% 88 29.64 1004.4
28 12:56 S 10 10.00 Partly Cloudy FEW023 SCT120 82.9 72 70% 88 29.66 1005.2
28 11:56 S 8 10.00 Partly Cloudy FEW050 SCT110 79 71.1 77% 82 29.7 1006.4
28 10:56 Vrbl 6 10.00 Light Rain FEW031 SCT070 SCT090 78.1 72 82% 80 29.71 1006.7
28 09:56 Vrbl 7 10.00 Fair CLR 78.1 70 76% 80 29.73 1007.5
28 08:56 SW 8 10.00 Fair CLR 78.1 70 76% 80 29.72 1007.2
28 07:56 S 5 10.00 Mostly Cloudy FEW050 BKN120 75 73 75 70 94% 73 29.73 1007.7
28 06:56 S 6 10.00 Fair CLR 72 72 100% 29.72 1007.1
28 05:56 SE 3 10.00 Fair CLR 71.1 71.1 100% 29.73 1007.3
28 04:56 Calm 10.00 Fair CLR 71.1 71.1 100% 29.75 1008.2
28 03:56 S 3 10.00 Fair CLR 73.9 70 88% 29.77 1008.8
28 02:56 SE 3 10.00 Fair CLR 73 71.1 94% 29.79 1009.6
28 01:56 SE 3 10.00 Fair CLR 75 70 79 73 84% 75 29.81 1010.2
28 00:56 SE 3 10.00 Fair CLR 75 69.1 82% 75 29.81 1010.0
27 23:56 SE 3 10.00 Fair CLR 75 70 84% 75 29.82 1010.4
27 22:56 Calm 10.00 Fair CLR 73.9 71.1 91% 29.81 1010.1
27 21:56 SE 5 10.00 Fair CLR 75.9 69.1 79% 77 29.81 1010.3
27 20:56 SE 5 10.00 Fair CLR 75.9 68 77% 77 29.82 1010.5
27 19:56 Calm 10.00 Fair CLR 79 64.9 86 79 62% 81 29.82 1010.4
27 18:56 NW 3 10.00 Fair CLR 84 66.9 57% 87 29.82 1010.7
27 17:56 NW 6 10.00 A Few Clouds FEW047 84 66.9 57% 87 29.82 1010.6
27 16:56 W 3 10.00 Partly Cloudy SCT047 84 68 59% 87 29.82 1010.5
27 15:56 W 7 10.00 Fair CLR 84.9 68 57% 88 29.82 1010.5
27 14:56 Vrbl 5 10.00 Fair CLR 84 66 55% 86 29.85 1011.6
27 13:56 Vrbl 3 10.00 Fair CLR 84.9 68 84.9 71.1 57% 88 29.86 1012.1
27 12:56 NW 5 10.00 Mostly Cloudy BKN037 82 68 63% 85 29.88 1012.6
27 11:56 Vrbl 3 10.00 A Few Clouds FEW095 82 68 63% 85 29.89 1013.0
27 10:56 Vrbl 3 10.00 Fair CLR 81 69.1 67% 84 29.89 1013.1
27 08:56 Calm 10.00 Fair CLR 75.9 66.9 74% 77 29.89 1012.9
27 07:56 NW 3 10.00 Fair CLR 71.1 70 75 68 96% 29.89 1013.0
27 06:56 Calm 8.00 Fair CLR 68 0 0% 29.88 1012.8
27 05:56 Calm 9.00 A Few Clouds FEW060 68 0 0% 29.86 1012.1
27 04:56 Calm 10.00 A Few Clouds FEW065 69.8 0 0% 29.86 1011.9
27 03:56 Calm 10.00 Overcast BKN060 OVC080 71.1 71.1 100% 29.86 1012.0
27 02:56 W 5 8.00 Overcast BKN065 OVC085 73 71.1 94% 29.86 1012.0
27 01:56 SW 3 10.00 Overcast OVC060 75 70 78.1 73 84% 75 29.88 1012.4
27 00:56 S 3 10.00 Overcast SCT050 OVC060 75.9 69.1 79% 77 29.89 1012.8
26 23:56 S 3 10.00 Overcast BKN060 OVC080 75 69.1 82% 75 29.89 1012.9
26 22:56 S 3 10.00 Partly Cloudy SCT070 73 69.1 87% 29.89 1012.9
26 21:56 SE 3 10.00 Partly Cloudy FEW060 SCT090 73 69.1 87% 29.89 1013.2
26 20:56 Vrbl 3 10.00 Overcast OVC085 77 66.9 71% 79 29.88 1012.6
26 19:56 Calm 10.00 Overcast OVC080 78.1 64 86 78.1 62% 80 29.86 1012.2
26 18:56 Calm 10.00 Overcast BKN085 OVC100 79 66 65% 81 29.87 1012.4
26 17:56 Vrbl 5 10.00 Mostly Cloudy FEW065 SCT085 BKN110 82 64 55% 84 29.88 1012.6
26 16:56 NW 6 10.00 Overcast OVC080 81 64.9 58% 83 29.88 1012.9
26 15:56 Vrbl 3 10.00 Partly Cloudy FEW044 SCT055 SCT075 84 68 59% 87 29.88 1012.7
26 14:56 Calm 8.00 Mostly Cloudy BKN040 BKN080 82.9 68 61% 86 29.9 1013.3
26 13:56 W 5 10.00 Overcast BKN034 BKN043 OVC060 80.1 66.9 82.9 68 64% 82 29.92 1014.2
26 12:56 Calm 10.00 Overcast SCT034 SCT047 OVC060 81 68 65% 84 29.93 1014.6
26 11:56 W 6 10.00 Overcast BKN029 OVC060 78.1 66.9 69% 80 29.95 1015.1
26 09:56 SE 5 10.00 Overcast OVC048 73 66 79% 29.98 1016.1
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)