National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce
Weather observations for the past three days for
Brooks Field 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.
25 07:35 NW 5 10.00 Overcast OVC009 52.7 50 91% 29.87 0.0
25 07:15 NW 3 10.00 Overcast OVC009 53.2 50.4 90% 29.85 0.0
25 06:55 Calm 10.00 Overcast OVC009 53.2 50.4 90% 29.84 0.0
25 06:35 Calm 10.00 Mostly Cloudy BKN011 53.2 51.4 94% 29.84 0.0
25 06:15 Calm 10.00 Mostly Cloudy BKN009 53.4 51.3 92% 29.83 0.0
25 05:55 Calm 10.00 Overcast OVC009 54.1 52.2 93% 29.82 0.0
25 05:35 W 6 10.00 Overcast OVC007 54.9 52.7 92% 29.82 0.0
25 05:15 NW 5 10.00 Overcast OVC007 55.4 53.6 94% 29.81 0.0
25 04:55 W 5 10.00 Overcast OVC007 55.4 53.6 94% 29.81 0.0
25 04:35 NW 7 10.00 Overcast OVC007 55 53.6 95% 29.8 0.0
25 04:15 NW 6 10.00 Mostly Cloudy BKN007 54.7 53.2 95% 29.79 0.0
25 03:55 W 5 10.00 Fair CLR 54.5 53.1 95% 29.78 0.0
25 03:35 W 6 10.00 Fair CLR 53.6 52 94% 29.78 0.0
25 03:15 W 3 10.00 Fair CLR 54.3 52.3 93% 29.78 0.0
25 02:55 W 3 10.00 Fair CLR 55.8 53.8 93% 29.78 0.0
25 02:35 W 5 10.00 Fair CLR 55.8 53.4 92% 29.78 0.0
25 02:15 W 3 10.00 Fair CLR 57 54 90% 29.79 0.0
25 01:55 W 3 10.00 Fair CLR 56.8 53.8 64.2 56.3 90% 29.78 0.0
25 01:35 W 5 10.00 Fair CLR 57.2 53.8 88% 29.79 0.0
25 01:15 W 5 10.00 Partly Cloudy SCT046 57.4 54 88% 29.79 0.0
25 00:55 W 3 10.00 Partly Cloudy SCT046 56.5 53.6 90% 29.79 0.0
25 00:35 NW 3 10.00 Partly Cloudy SCT049 57 54.3 91% 29.78 0.0
25 00:15 W 5 10.00 Mostly Cloudy BKN049 57.7 54.1 88% 29.78 0.0
24 23:55 W 3 10.00 Overcast OVC049 58.6 55 88% 29.78 0.0
24 23:35 W 3 10.00 Mostly Cloudy BKN047 57.6 54.1 88% 29.78 0.0
24 23:15 W 5 10.00 Overcast OVC043 58.1 54.5 88% 29.78 0.0
24 22:55 W 3 10.00 Mostly Cloudy BKN041 58.1 54.7 88% 29.78 0.0
24 22:35 W 6 10.00 Partly Cloudy SCT039 56.5 52.9 88% 29.78 0.0
24 22:15 W 3 10.00 Fair CLR 57.7 53.6 86% 29.77 0.0
24 21:55 W 3 10.00 Fair CLR 59.9 54.1 81% 29.76 0.0
24 21:35 W 3 10.00 Fair CLR 60.3 54.3 81% 29.76 0.0
24 21:15 NW 3 10.00 Partly Cloudy SCT070 62.6 54.9 76% 29.76 0.0
24 20:55 NW 3 10.00 Mostly Cloudy BKN070 63.1 55.2 76% 29.75 0.0
24 20:35 W 6 10.00 Overcast SCT055 OVC070 63.7 55.2 74% 29.75 0.0
24 20:15 NW 7 10.00 Overcast SCT028 BKN045 OVC049 64 55.9 75% 29.74 0.0
24 19:55 SW 5 10.00 Overcast SCT028 BKN034 OVC046 63.7 58.6 78.3 63.7 84% 29.74 0.0 0.02
24 19:35 SW 6 10.00 Overcast BKN028 BKN046 OVC100 64.2 59 83% 29.74 0.0
24 19:15 W 8 10.00 Light Rain SCT035 OVC100 63.7 58.5 83% 29.73 0.0
24 18:55 W 7 10.00 Light Rain SCT037 SCT070 OVC090 64.4 59.2 83% 29.72 0.0
24 18:35 W 8 10.00 Light Rain SCT070 OVC090 64.8 58.1 79% 29.72 0.0
24 18:15 SW 10 10.00 Light Rain SCT060 OVC090 66.2 58.3 76% 29.71 0.0
24 17:55 W 12 G 16 10.00 Light Rain OVC060 67.6 58.5 73% 29.71 0.0
24 17:35 SW 12 10.00 Light Rain SCT040 BKN070 OVC100 68.9 57.6 67% 29.71 0.0
24 17:15 W 13 10.00 Overcast SCT039 BKN075 OVC100 69.6 56.8 64% 29.7 0.0
24 16:55 SW 8 G 16 10.00 Overcast SCT039 BKN075 OVC100 69.8 55.8 61% 29.7 0.0 0.02
24 16:35 SW 15 10.00 Overcast SCT055 SCT080 OVC085 71.1 56.7 61% 29.7 0.0
24 16:15 W 15 G 24 10.00 Overcast BKN055 BKN070 OVC080 71.8 56.3 58% 29.69 0.0
24 15:55 SW 13 G 22 10.00 Overcast SCT048 BKN070 OVC090 72.7 57.9 60% 29.69 0.0
24 15:35 SW 7 10.00 Mostly Cloudy SCT050 SCT070 BKN090 71.4 62.4 73% 29.68 0.0
24 15:15 S 8 10.00 Overcast SCT047 SCT065 OVC090 70.5 63.3 78% 29.68 0.0
24 14:55 SW 13 G 23 10.00 Light Rain SCT050 OVC065 70.2 61.2 73% 29.69 0.0 0.01
24 14:15 SW 12 G 20 10.00 Mostly Cloudy BKN050 77.2 58.6 53% 79 29.67 0.0
24 13:55 SW 14 G 20 10.00 Overcast BKN050 BKN070 OVC085 77 57 78.1 63.9 50% 79 29.68 0.0
24 13:35 SW 12 G 23 10.00 Mostly Cloudy SCT048 SCT075 BKN090 77.2 56.7 49% 79 29.69 0.0
24 13:15 SW 12 G 16 10.00 Partly Cloudy SCT046 SCT120 77.4 58.1 52% 79 29.69 0.0
24 12:55 SW 12 G 20 10.00 Mostly Cloudy SCT046 BKN120 77.5 58.1 51% 79 29.7 0.0
24 12:35 S 13 G 20 10.00 Partly Cloudy SCT046 SCT120 76.3 57.7 53% 78 29.7 0.0
24 12:15 S 15 G 20 10.00 Partly Cloudy SCT044 SCT120 76.3 57 51% 78 29.71 0.0
24 11:55 S 10 G 21 10.00 Partly Cloudy SCT043 SCT120 76.1 57.4 52% 78 29.7 0.0
24 11:35 SW 12 G 16 10.00 Fair CLR 75.2 57.4 54% 78 29.71 0.0
24 11:15 S 10 10.00 Fair CLR 73.6 56.5 55% 29.71 0.0
24 10:55 S 13 G 16 10.00 Partly Cloudy SCT060 73.8 56.3 55% 29.71 0.0
24 10:35 SW 7 10.00 Mostly Cloudy SCT044 BKN060 72.1 55.8 56% 29.72 0.0
24 10:15 S 9 10.00 Mostly Cloudy BKN044 BKN050 70.3 54.5 57% 29.73 0.0
24 09:55 S 6 10.00 Partly Cloudy SCT046 SCT050 SCT075 70.2 54.9 58% 29.72 0.0
24 09:35 S 8 10.00 Mostly Cloudy SCT044 SCT055 BKN080 69.3 54.5 60% 29.72 0.0
24 09:15 S 9 10.00 Fair CLR 68.2 54 61% 29.73 0.0
24 08:55 S 5 10.00 Partly Cloudy SCT090 66.7 53.4 62% 29.74 0.0
24 08:35 S 7 10.00 Mostly Cloudy BKN090 65.5 52.5 63% 29.74 0.0
24 08:15 S 6 10.00 Mostly Cloudy BKN090 64.8 52.2 64% 29.74 0.0
24 07:55 S 6 10.00 Overcast OVC090 64 51.8 64.9 59.4 65% 29.74 0.0
24 07:35 S 7 10.00 Overcast BKN090 OVC120 63 51.3 66% 29.74 0.0
24 07:15 SE 6 10.00 Mostly Cloudy SCT065 SCT090 BKN120 62.2 50.4 65% 29.75 0.0
24 06:55 SE 3 10.00 Mostly Cloudy SCT047 BKN065 BKN075 62.2 50.4 65% 29.75 0.0
24 06:35 Calm 10.00 Mostly Cloudy SCT047 SCT055 BKN065 62.2 49.5 63% 29.76 0.0
24 06:15 Calm 10.00 Partly Cloudy SCT049 SCT070 SCT085 62.8 49.3 62% 29.77 0.0
24 05:55 S 3 10.00 Partly Cloudy SCT070 SCT085 62.8 49.1 61% 29.77 0.0
24 05:35 S 3 10.00 Partly Cloudy SCT050 63.1 48.7 60% 29.77 0.0
24 05:15 S 5 10.00 Mostly Cloudy SCT050 BKN065 63.5 48.6 58% 29.77 0.0
24 04:55 S 6 10.00 Mostly Cloudy SCT065 BKN070 63.1 48.4 59% 29.77 0.0
24 04:35 S 5 10.00 Partly Cloudy SCT060 62.4 48.2 60% 29.77 0.0
24 04:15 S 3 10.00 Partly Cloudy SCT065 61.3 48.4 63% 29.77 0.0
24 03:55 SE 3 10.00 Partly Cloudy SCT065 61.2 48.4 63% 29.78 0.0
24 03:35 Calm 10.00 Mostly Cloudy BKN065 59.9 48.6 66% 29.78 0.0
24 03:15 SE 3 10.00 Partly Cloudy SCT065 62.4 48.4 60% 29.79 0.0
24 02:55 Calm 10.00 Fair CLR 63.3 48.2 58% 29.79 0.0
24 02:35 S 3 10.00 Fair CLR 64 48.6 57% 29.8 0.0
24 02:15 S 3 10.00 Fair CLR 64.6 49.1 57% 29.8 0.0
24 01:55 S 3 10.00 Fair CLR 64.8 49.1 75.2 64 57% 29.8 0.0
24 01:35 S 3 10.00 Fair CLR 65.3 49.5 57% 29.8 0.0
24 01:15 S 3 10.00 Fair CLR 64.9 50.2 59% 29.81 0.0
24 00:55 S 3 10.00 Fair CLR 64 50.5 62% 29.81 0.0
24 00:35 Calm 10.00 Fair CLR 64.8 50.9 61% 29.81 0.0
24 00:15 SE 5 10.00 Fair CLR 65.3 51.1 60% 29.8 0.0
23 23:55 S 3 10.00 Fair CLR 64.8 51.3 62% 29.8 0.0
23 23:35 Calm 10.00 Fair CLR 65.5 51.4 61% 29.8 0.0
23 23:15 SE 3 10.00 Fair CLR 66.7 51.4 58% 29.8 0.0
23 22:55 SE 3 10.00 Fair CLR 67.3 51.8 58% 29.8 0.0
23 22:35 SE 3 10.00 Fair CLR 66.4 52 60% 29.81 0.0
23 22:15 SE 3 10.00 Fair CLR 65.1 52 63% 29.81 0.0
23 21:55 Calm 10.00 Fair CLR 68 51.6 56% 29.82 0.0
23 21:35 Calm 10.00 Fair CLR 68.7 51.8 55% 29.81 0.0
23 21:15 Calm 10.00 Fair CLR 70 51.8 53% 29.8 0.0
23 20:55 Calm 10.00 Fair CLR 71.6 51.8 50% 29.8 0.0
23 20:35 S 3 10.00 Fair CLR 73.2 51.3 46% 29.81 0.0
23 20:15 Calm 10.00 Fair CLR 74.3 51.4 45% 29.81 0.0
23 19:55 S 5 10.00 Fair CLR 75.4 52 79.7 75.4 44% 78 29.81 0.0
23 19:35 S 7 10.00 Fair CLR 75.7 53.1 45% 78 29.82 0.0
23 19:15 SW 9 10.00 Fair CLR 76.1 52.7 44% 78 29.82 0.0
23 18:55 SW 8 10.00 Fair CLR 76.1 52.2 43% 78 29.82 0.0
23 18:35 SW 14 G 18 10.00 Fair CLR 77.2 51.6 41% 78 29.82 0.0
23 18:15 SW 9 10.00 Partly Cloudy SCT060 77 53.4 44% 78 29.82 0.0
23 17:55 SW 8 G 16 10.00 Partly Cloudy SCT060 77.5 53.8 44% 79 29.82 0.0
23 17:35 S 9 G 18 10.00 Partly Cloudy SCT060 79 54 42% 79 29.84 0.0
23 17:15 S 7 G 20 10.00 Mostly Cloudy BKN060 BKN070 79 54 42% 79 29.84 0.0
23 16:55 SW 10 10.00 Partly Cloudy SCT060 SCT070 79 55.2 44% 80 29.85 0.0
23 16:35 SW 9 10.00 Partly Cloudy SCT050 78.8 55 44% 79 29.86 0.0
23 16:15 SW 10 10.00 Partly Cloudy SCT050 78.3 55.2 45% 79 29.86 0.0
23 15:55 SW 12 G 17 10.00 Partly Cloudy SCT050 79.7 55.8 44% 80 29.87 0.0
23 15:35 S 9 10.00 Partly Cloudy SCT050 SCT070 78.1 55.6 46% 79 29.88 0.0
23 15:15 SW 13 G 18 10.00 Partly Cloudy SCT050 78.3 56.7 48% 79 29.89 0.0
23 14:55 W 10 10.00 Fair CLR 78.4 57 48% 79 29.89 0.0
23 14:35 SW 10 G 16 10.00 Partly Cloudy SCT050 78.3 56.3 47% 79 29.9 0.0
23 14:15 SW 12 G 16 10.00 Partly Cloudy SCT050 77 56.1 49% 79 29.9 0.0
23 13:55 SW 5 G 16 10.00 Partly Cloudy SCT044 77.4 55.9 77.9 53.6 48% 79 29.9 0.0
23 13:35 SW 7 G 17 10.00 Partly Cloudy SCT044 77.2 56.5 49% 79 29.91 0.0
23 13:15 SW 6 10.00 Fair CLR 77.4 58.6 53% 79 29.92 0.0
23 12:55 SW 9 10.00 Fair CLR 75.4 57.4 54% 78 29.93 0.0
23 12:35 SW 6 10.00 Fair CLR 75.2 57.7 55% 78 29.93 0.0
23 12:15 SW 6 10.00 Fair CLR 74.3 57.6 56% 29.94 0.0
23 11:55 Calm 10.00 Fair CLR 73.2 57.7 58% 29.94 0.0
23 11:35 Calm 10.00 Fair CLR 70.9 58.1 64% 29.94 0.0
23 11:15 SW 3 10.00 Fair CLR 70.5 59 67% 29.95 0.0
23 10:55 Calm 10.00 Fair CLR 68.9 58.6 70% 29.95 0.0
23 10:35 W 3 10.00 Fair CLR 66.9 58.3 74% 29.95 0.0
23 10:15 S 3 10.00 Fair CLR 65.5 57.9 77% 29.96 0.0
23 09:55 S 6 10.00 Fair CLR 62.6 58.1 85% 29.97 0.0
23 09:35 Calm 10.00 Fair CLR 60.6 57.4 89% 29.96 0.0
23 09:15 SE 3 10.00 Fair CLR 59 57 93% 29.97 0.0
23 08:55 S 3 10.00 Fair CLR 57.2 56.5 97% 29.97 0.0
23 08:35 Calm 10.00 Fair CLR 55.9 55.6 99% 29.97 0.0
23 08:15 SE 3 7.00 Fair CLR 54.7 54.5 99% 29.98 0.0
23 07:55 E 3 2.50 Fog/Mist BKN002 53.1 52.9 54.9 51.8 99% 29.97 0.0
23 07:35 E 3 0.75 Fog/Mist OVC002 52.3 52 99% 29.97 0.0
23 07:15 E 3 0.25 Fog OVC002 52 51.8 99% 29.97 0.0
23 06:55 Calm 0.25 Fog OVC002 52 51.8 99% 29.97 0.0
23 06:35 E 3 0.50 Fog OVC002 52.2 51.8 99% 29.96 0.0
23 06:15 Calm 0.25 Fog OVC002 52.2 51.8 99% 29.96 0.0
23 05:55 Calm 0.25 Fog OVC002 52.5 52.2 99% 29.96 0.0
23 05:35 Calm 0.50 Fog BKN002 BKN009 52.9 52.5 99% 29.96 0.0
23 05:15 Calm 2.00 Fog/Mist CLR 53.2 52.9 99% 29.96 0.0
23 04:55 Calm 2.00 Fog/Mist CLR 53.1 52.7 99% 29.96 0.0
23 04:35 Calm 5.00 Fog/Mist CLR 53.8 53.4 99% 29.96 0.0
23 04:15 Calm 4.00 Fog/Mist CLR 53.2 52.9 99% 29.96 0.0
23 03:55 E 3 1.25 Fog/Mist VV007 53.4 53.1 99% 29.96 0.0
23 03:35 Calm 4.00 Fog/Mist CLR 54.3 53.8 98% 29.96 0.0
23 03:15 Calm 5.00 Fog/Mist CLR 54.7 54.3 99% 29.96 0.0
23 02:55 E 3 2.50 Fog/Mist CLR 53.8 53.4 99% 29.97 0.0
23 02:35 E 3 1.50 Fog/Mist VV007 54.1 53.8 99% 29.97 0.0
23 02:15 E 3 0.75 Fog/Mist BKN008 53.4 53.1 99% 29.97 0.0
23 01:55 Calm 0.25 Fog OVC008 52.7 52.2 70 51.6 98% 29.97 0.0
23 01:35 Calm 0.50 Fog VV005 54.7 54.1 98% 29.97 0.0
23 01:15 Calm 2.00 Fog/Mist CLR 53.1 52.3 97% 29.98 0.0
23 00:55 Calm 0.50 Fog VV005 54.1 53.4 97% 29.97 0.0
23 00:35 Calm 4.00 Fog/Mist CLR 53.4 52.3 96% 29.98 0.0
23 00:15 Calm 7.00 Fair CLR 56.3 55.4 97% 29.98 0.0
22 23:55 Calm 10.00 Fair CLR 55.6 54.3 96% 29.97 0.0
22 23:35 Calm 10.00 Fair CLR 55.9 54.7 96% 29.97 0.0
22 23:15 Calm 10.00 Fair CLR 57.2 54.9 92% 29.97 0.0
22 22:55 Calm 10.00 Fair CLR 57.4 54.5 90% 29.97 0.0
22 22:35 Calm 10.00 Fair CLR 61 57.4 88% 29.97 0.0
22 22:15 Calm 10.00 Fair CLR 62.2 57.2 84% 29.97 0.0
22 21:55 Calm 10.00 Partly Cloudy SCT034 SCT041 SCT047 63.5 57.6 81% 29.96 0.0
22 21:35 Calm 10.00 Mostly Cloudy SCT036 BKN042 BKN047 63.5 57.4 81% 29.96 0.0
22 21:15 SW 3 10.00 Partly Cloudy SCT038 63.3 57.4 81% 29.96 0.0
22 20:55 W 3 10.00 Partly Cloudy SCT036 SCT047 65.7 57.6 75% 29.95 0.0
22 20:35 W 8 10.00 Mostly Cloudy BKN036 BKN047 68.2 58.1 70% 29.94 0.0
22 20:15 W 6 10.00 Overcast BKN038 OVC045 69.8 58.1 67% 29.94 0.0
22 19:55 W 6 10.00 Mostly Cloudy BKN038 BKN045 BKN120 70.7 58.5 77.7 70.7 65% 29.93 0.0
22 19:35 W 8 10.00 Overcast OVC040 71.8 58.6 63% 29.93 0.0
22 19:15 SW 6 10.00 Overcast BKN040 OVC048 72.1 58.8 63% 29.92 0.0
22 18:55 W 5 10.00 Mostly Cloudy BKN040 BKN048 71.2 58.8 65% 29.92 0.0
22 18:35 W 8 10.00 Fair CLR 71.6 59 65% 29.91 0.0
22 18:15 W 10 10.00 Partly Cloudy SCT060 73.6 59 60% 29.91 0.0
22 17:55 SW 12 10.00 Partly Cloudy SCT060 73.4 59.2 61% 29.91 0.0
22 17:35 W 12 10.00 Fair CLR 74.5 59.5 60% 29.91 0.0
22 17:15 W 9 10.00 Fair CLR 74.5 59.4 59% 29.91 0.0
22 16:55 W 14 G 18 10.00 Fair CLR 74.5 59.5 60% 29.91 0.0
22 16:35 W 13 G 16 10.00 Partly Cloudy SCT075 73.9 60.1 62% 29.91 0.0
22 16:15 SW 12 10.00 Partly Cloudy SCT043 SCT050 SCT060 75.9 60.6 59% 78 29.91 0.0
22 15:55 SW 9 10.00 Mostly Cloudy SCT045 SCT050 BKN060 76.1 59 56% 78 29.91 0.0
22 15:35 SW 8 10.00 Partly Cloudy SCT070 76.3 58.3 54% 78 29.92 0.0
22 15:15 SW 8 10.00 Fair CLR 76.1 53.8 46% 78 29.92 0.0
22 14:55 W 8 10.00 Partly Cloudy SCT045 SCT075 77.2 57.6 51% 79 29.93 0.0
22 14:35 SW 5 10.00 Partly Cloudy SCT045 SCT075 75 56.3 52% 78 29.93 0.0
22 14:15 S 9 10.00 Partly Cloudy SCT044 SCT080 75.9 56.5 51% 78 29.94 0.0
22 13:55 W 8 10.00 Mostly Cloudy SCT044 SCT080 BKN090 75.2 57.2 75.4 47.8 54% 78 29.94 0.0
22 13:35 S 7 10.00 Mostly Cloudy BKN080 BKN090 74.3 54.5 50% 29.94 0.0
22 13:15 SW 3 10.00 Partly Cloudy SCT080 74.1 56.8 55% 29.94 0.0
22 12:55 S 6 10.00 Partly Cloudy SCT090 73 56.7 57% 29.94 0.0
22 12:35 S 7 10.00 Fair CLR 71.8 56.7 59% 29.95 0.0
22 12:15 S 3 10.00 Fair CLR 71.6 56.5 59% 29.95 0.0
22 11:55 SE 7 10.00 Fair CLR 70.5 56.5 61% 29.95 0.0
22 11:35 SE 6 10.00 Fair CLR 69.6 55.6 61% 29.95 0.0
22 11:15 SE 5 10.00 Partly Cloudy SCT080 67.8 57.2 69% 29.95 0.0
22 10:55 SE 3 10.00 Mostly Cloudy BKN080 66.2 56.3 71% 29.96 0.0
22 10:35 E 5 10.00 Partly Cloudy SCT080 65.8 56.5 72% 29.95 0.0
22 10:15 Calm 10.00 Partly Cloudy SCT080 64.2 56.3 76% 29.95 0.0
22 09:55 Calm 10.00 Partly Cloudy SCT080 61.7 55.4 80% 29.95 0.0
22 09:35 Calm 10.00 Fair CLR 59.5 55 85% 29.95 0.0
22 09:15 Calm 10.00 Fair CLR 57.6 55 91% 29.95 0.0
22 08:55 Calm 10.00 Fair CLR 55.6 54.5 96% 29.95 0.0
22 08:35 Calm 10.00 Fair CLR 53.2 52.9 99% 29.95 0.0
22 08:15 Calm 10.00 Fair CLR 49.8 49.6 99% 29.95 0.0
22 07:55 Calm 10.00 Fair CLR 47.1 46.8 48.7 42.1 99% 29.94 0.0
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)