National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce
Weather observations for the past three days for
Portland Municipal 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.
12 00:15 NE 5 10.00 Fair CLR 72.7 63.5 73% 30.1 0.0
11 23:55 N 5 10.00 Fair CLR 72.9 63.5 73% 30.1 0.0
11 23:35 NE 3 10.00 Fair CLR 73 63.5 72% 30.1 0.0
11 23:15 N 3 10.00 Fair CLR 73.4 63.3 71% 30.1 0.0
11 22:55 NE 3 7.00 Fair CLR 73.4 63.1 70% 30.09 0.0
11 22:35 NE 3 7.00 Fair CLR 73.4 63 70% 30.09 0.0
11 22:15 Calm 7.00 Fair CLR 73.4 63 70% 30.07 0.0
11 21:55 NE 3 10.00 Fair CLR 73.4 63 70% 30.06 0.0
11 21:35 N 3 10.00 Fair CLR 73.4 63.3 71% 30.06 0.0
11 21:15 N 3 7.00 Fair CLR 73.6 63.5 71% 30.06 0.0
11 20:55 N 5 7.00 Fair CLR 74.3 63.3 69% 30.05 0.0
11 20:35 N 3 10.00 Fair CLR 74.8 62.6 66% 30.05 0.0
11 20:15 Calm 10.00 Partly Cloudy SCT029 SCT036 74.7 63 67% 30.05 0.0
11 19:55 NE 6 7.00 Mostly Cloudy SCT012 SCT018 BKN027 74.7 63.9 76.6 72.9 69% 30.05 0.0 0.02
11 19:35 NE 7 7.00 Mostly Cloudy SCT012 BKN020 75.7 63.9 67% 78 30.05 0.0
11 19:15 N 6 7.00 Fair CLR 76.3 65.1 68% 78 30.04 0.0
11 18:55 N 3 10.00 Fair CLR 76.6 65.1 68% 78 30.03 0.0
11 18:35 Calm 7.00 Fair CLR 76.5 64.9 68% 78 30.04 0.0
11 18:15 Calm 10.00 Fair CLR 76.5 65.1 68% 78 30.04 0.0
11 17:55 Calm 7.00 Fair CLR 75.9 63.7 66% 78 30.03 0.0
11 17:35 Calm 10.00 Partly Cloudy SCT100 75.4 64 68% 77 30.03 0.0
11 17:15 Calm 10.00 Partly Cloudy SCT100 74.7 64.4 71% 30.03 0.0
11 16:55 SW 3 7.00 Mostly Cloudy SCT031 SCT042 BKN085 74.5 64.8 72% 30.03 0.0 0.01 0.02
11 16:35 Calm 5.00 Overcast with Haze SCT023 BKN033 OVC050 73.4 63.9 72% 30.03 0.0 0.01
11 16:15 Calm 7.00 Mostly Cloudy SCT023 SCT039 BKN060 73.6 63.5 71% 30.04 0.0
11 15:55 Calm 7.00 Overcast SCT033 BKN065 OVC110 73.4 64 73% 30.04 0.0 0.01
11 15:35 W 3 5.00 Light Rain SCT026 BKN050 OVC070 72.9 63.7 73% 30.04 0.0
11 15:15 W 3 10.00 Mostly Cloudy BKN060 BKN075 73.6 63.3 70% 30.04 0.0
11 14:55 SW 6 10.00 Partly Cloudy SCT060 74.3 62.6 67% 30.04 0.0
11 14:35 SW 5 10.00 Mostly Cloudy SCT032 SCT038 BKN060 74.1 61.9 66% 30.03 0.0
11 14:15 Calm 7.00 Overcast SCT017 BKN023 OVC032 73.4 62.1 68% 30.05 0.0
11 13:55 SW 7 7.00 Overcast BKN015 BKN023 OVC045 73.4 61.9 78.6 73.2 67% 30.05 0.0
11 13:35 SW 8 7.00 Overcast SCT015 BKN045 OVC110 77.2 64.8 66% 79 30.05 0.0
11 13:15 Calm 7.00 Mostly Cloudy BKN013 BKN110 77.2 64.8 66% 79 30.05 0.0
11 12:55 Calm 7.00 Mostly Cloudy BKN013 BKN060 BKN110 77.2 64.6 65% 79 30.04 0.0
11 12:35 E 5 7.00 Overcast SCT013 BKN018 OVC060 77.4 65.1 66% 79 30.03 0.0
11 12:15 NE 6 7.00 Overcast SCT013 OVC018 77.7 65.3 66% 80 30.02 0.0
11 11:55 E 6 7.00 Overcast OVC013 78.1 66.2 67% 80 30.01 0.0
11 11:35 NE 5 7.00 Overcast BKN012 OVC038 77 65.5 68% 79 30.01 0.0
11 11:15 NE 3 7.00 Overcast BKN010 BKN017 OVC050 77.9 65.8 67% 80 30.01 0.0
11 10:55 NE 6 5.00 Mostly Cloudy with Haze BKN010 BKN015 BKN020 76.5 65.5 69% 78 30.02 0.0
11 10:35 NE 5 10.00 Mostly Cloudy BKN045 BKN050 76.1 64.4 67% 78 30.02 0.0
11 10:15 N 5 7.00 Mostly Cloudy BKN045 BKN050 75.7 64.6 68% 77 30.02 0.0
11 09:55 Calm 7.00 Fair CLR 74.8 64.4 70% 30.01 0.0
11 09:35 N 5 7.00 Partly Cloudy SCT120 74.3 64.9 73% 30.01 0.0
11 09:15 N 3 7.00 Mostly Cloudy SCT060 BKN120 73.8 64.9 74% 30.01 0.0
11 08:55 Calm 5.00 Mostly Cloudy with Haze SCT060 BKN120 73.4 64.6 74% 30.02 0.0
11 08:35 N 3 3.00 Overcast with Haze SCT004 BKN060 OVC090 73.4 65.7 77% 30.02 0.0
11 08:15 Calm 4.00 Overcast with Haze SCT004 SCT060 OVC100 73.4 65.8 77% 30.01 0.0
11 07:55 Calm 5.00 Overcast with Haze OVC100 73.4 65.1 74.3 71.6 75% 30 0.0
11 07:15 Calm 5.00 Mostly Cloudy with Haze SCT038 BKN100 72.9 64.9 76% 29.99 0.0
11 06:55 S 3 3.00 Overcast with Haze SCT038 OVC100 72.1 65.5 80% 29.99 0.0
11 06:35 Calm 1.50 Overcast with Haze OVC100 72.1 65.5 80% 29.98 0.0
11 06:15 Calm 3.00 Partly Cloudy with Haze SCT100 71.8 65.1 80% 29.97 0.0
11 05:55 Calm 3.00 Fair with Haze CLR 72 65.3 80% 29.97 0.0
11 05:35 Calm 3.00 Fair with Haze CLR 72.1 65.5 80% 29.96 0.0
11 05:15 Calm 4.00 Fair with Haze CLR 72.5 65.5 79% 29.96 0.0
11 04:55 Calm 5.00 Fair with Haze CLR 72.7 65.5 78% 29.96 0.0
11 04:35 Calm 7.00 Fair CLR 73.4 65.8 77% 29.96 0.0
11 04:15 Calm 5.00 Fair with Haze CLR 73.4 66.4 79% 29.95 0.0
11 03:55 Calm 5.00 Fair with Haze CLR 73.4 66.4 79% 29.95 0.0
11 03:35 Calm 5.00 Fair with Haze CLR 73.4 66.2 78% 29.95 0.0
11 03:15 W 3 7.00 Fair CLR 73.8 66.2 77% 29.96 0.0
11 02:55 W 5 7.00 Fair CLR 73.4 66.2 78% 29.96 0.0
11 02:35 Calm 10.00 Partly Cloudy SCT100 74.1 65.7 75% 29.96 0.0
11 02:15 Calm 10.00 Partly Cloudy SCT030 SCT055 SCT095 74.3 65.8 75% 29.96 0.0
11 01:55 E 5 10.00 Mostly Cloudy SCT032 SCT046 BKN095 74.3 66.2 80.1 74.3 76% 29.97 0.0 0.01 0.01
11 01:35 Calm 7.00 Light Rain SCT034 BKN046 OVC085 74.7 65.3 73% 29.97 0.0
11 01:15 Calm 10.00 Overcast BKN029 OVC038 74.8 66.2 75% 29.98 0.0
11 00:55 W 5 10.00 Overcast BKN029 OVC035 75.4 65.7 72% 77 29.98 0.0
11 00:35 Calm 7.00 Mostly Cloudy SCT029 BKN090 BKN100 75.6 66.2 73% 77 29.98 0.0
11 00:15 SW 3 7.00 Partly Cloudy SCT017 SCT090 75.6 66.6 74% 77 29.98 0.0
10 23:55 Calm 7.00 Partly Cloudy SCT017 SCT050 75.6 66.9 75% 77 29.98 0.0
10 23:35 SW 3 10.00 Partly Cloudy SCT050 76.1 67.1 74% 78 29.98 0.0
10 23:15 SW 3 10.00 Partly Cloudy SCT060 SCT090 76.5 66.6 72% 78 29.98 0.0
10 22:55 SW 5 10.00 Mostly Cloudy BKN070 BKN100 77 66.2 69% 79 29.98 0.0
10 22:35 SW 5 10.00 Overcast OVC070 76.8 66.2 70% 79 29.98 0.0
10 22:15 W 5 10.00 Partly Cloudy SCT070 SCT120 77 66.2 69% 79 29.97 0.0
10 21:55 SW 5 10.00 Partly Cloudy SCT120 77 66 69% 79 29.96 0.0
10 21:35 SW 3 7.00 Partly Cloudy SCT120 77 65.8 69% 79 29.94 0.0
10 21:15 Calm 7.00 Fair CLR 77.4 66.4 69% 79 29.93 0.0
10 20:55 SW 3 10.00 Fair CLR 77.9 66 67% 80 29.94 0.0
10 20:35 SW 3 10.00 Fair CLR 78.3 65.8 66% 80 29.94 0.0
10 20:15 Calm 7.00 Fair CLR 78.8 65.1 63% 81 29.94 0.0
10 19:55 SW 5 7.00 Partly Cloudy SCT120 80.1 63.5 88.7 75.2 57% 82 29.93 0.0 0.4
10 19:35 Calm 10.00 Partly Cloudy SCT120 80.4 63.5 56% 82 29.93 0.0
10 19:15 Calm 10.00 Partly Cloudy SCT120 80.8 62.1 53% 82 29.92 0.0
10 18:55 SW 5 10.00 Partly Cloudy SCT120 80.8 63.9 56% 82 29.93 0.0
10 18:35 SW 7 7.00 Partly Cloudy SCT120 81.3 63.9 55% 83 29.92 0.0
10 18:15 SW 8 10.00 Fair CLR 82.6 64.6 55% 84 29.91 0.0
10 17:55 W 5 7.00 Fair CLR 82.6 64.8 55% 84 29.9 0.0
10 17:35 W 6 7.00 Fair CLR 82.8 63.3 52% 84 29.91 0.0
10 17:15 W 6 10.00 Fair CLR 83.5 63.3 51% 85 29.9 0.0
10 16:55 NW 6 7.00 Fair CLR 81.7 65.5 58% 84 29.9 0.0 0.4
10 16:35 NW 6 7.00 Fair CLR 81.9 65.7 58% 84 29.91 0.0
10 16:15 W 6 10.00 Fair CLR 82.4 66 58% 85 29.91 0.0
10 15:55 Calm 5.00 Light Rain SCT033 BKN044 BKN050 77 63.1 62% 79 29.91 0.0 0.4
10 15:35 SW 30 G 36 1.50 Heavy Rain and Windy OVC042 78.3 63.9 61% 80 29.92 0.0 0.17
10 15:15 W 3 10.00 Partly Cloudy SCT038 SCT060 SCT065 86.9 61.7 43% 87 29.9 0.0
10 14:55 W 8 10.00 Mostly Cloudy SCT038 SCT060 BKN075 87.6 60.4 40% 87 29.9 0.0
10 14:35 W 7 10.00 Mostly Cloudy BKN038 BKN048 BKN065 86.4 61.3 43% 87 29.91 0.0
10 14:15 W 8 10.00 Partly Cloudy SCT038 SCT046 SCT060 87.4 61.7 42% 88 29.92 0.0
10 13:55 W 6 10.00 Partly Cloudy SCT035 87.1 62.1 87.1 74.1 43% 88 29.92 0.0
10 13:35 W 7 7.00 Partly Cloudy SCT033 SCT039 SCT070 86.2 63.3 46% 87 29.93 0.0
10 13:15 W 6 7.00 Partly Cloudy SCT030 SCT037 86 62.6 46% 87 29.93 0.0
10 12:55 W 6 10.00 Partly Cloudy SCT029 84.9 64.2 50% 86 29.93 0.0
10 12:15 W 6 7.00 Fair CLR 83.5 64.9 54% 85 29.93 0.0
10 11:55 W 5 7.00 Fair CLR 82.6 65.5 56% 85 29.93 0.0
10 11:15 SW 8 10.00 Fair CLR 81 64.8 58% 83 29.92 0.0
10 10:55 SW 7 7.00 Fair CLR 80.4 64.4 58% 82 29.92 0.0
10 10:35 W 9 7.00 Fair CLR 79.7 63.7 58% 81 29.92 0.0
10 10:15 W 8 7.00 Fair CLR 78.8 63.5 60% 80 29.93 0.0
10 09:55 W 8 7.00 Fair CLR 77.9 63 60% 80 29.92 0.0
10 09:35 W 10 10.00 Fair CLR 77.2 62.8 61% 79 29.92 0.0
10 09:15 W 10 10.00 Fair CLR 77 62.8 62% 79 29.93 0.0
10 08:55 W 10 10.00 Fair CLR 76.5 63 63% 78 29.91 0.0
10 08:35 W 9 7.00 Partly Cloudy SCT039 75.2 62.8 65% 77 29.93 0.0
10 08:15 SW 7 7.00 Partly Cloudy SCT019 74.5 63.1 68% 29.93 0.0
10 07:55 SW 8 7.00 Partly Cloudy SCT017 73.9 63.5 76.1 71.8 70% 29.94 0.0
10 07:35 SW 7 7.00 Partly Cloudy SCT015 73.4 63.5 71% 29.92 0.0
10 07:15 S 6 7.00 Overcast OVC015 72.7 63.5 73% 29.91 0.0
10 06:55 SW 6 10.00 Mostly Cloudy BKN015 72.3 63.5 74% 29.91 0.0
10 06:35 SW 5 5.00 Fair with Haze CLR 72.1 63.1 73% 29.9 0.0
10 06:15 SW 3 7.00 Fair CLR 71.8 63.1 74% 29.9 0.0
10 05:55 Calm 7.00 Fair CLR 72 63.1 74% 29.9 0.0
10 05:35 Calm 7.00 Fair CLR 72.7 63 72% 29.89 0.0
10 05:15 Calm 7.00 Fair CLR 72.3 63.1 73% 29.89 0.0
10 04:55 Calm 7.00 Fair CLR 72.5 63.1 73% 29.88 0.0
10 04:35 Calm 7.00 Fair CLR 72.7 63.1 72% 29.89 0.0
10 04:15 Calm 10.00 Fair CLR 73.2 63 70% 29.89 0.0
10 03:55 Calm 10.00 Fair CLR 74.3 63.5 69% 29.88 0.0
10 03:35 Calm 7.00 Fair CLR 74.3 63.5 69% 29.87 0.0
10 03:15 Calm 7.00 Fair CLR 73.8 63.5 70% 29.87 0.0
10 02:55 Calm 10.00 Fair CLR 74.7 63.9 69% 29.87 0.0
10 02:35 SW 3 10.00 Fair CLR 75.2 63.9 68% 77 29.87 0.0
10 02:15 S 3 10.00 Fair CLR 75.6 63.9 67% 77 29.88 0.0
10 01:55 S 3 10.00 Fair CLR 75.4 63.5 83.7 74.5 67% 77 29.9 0.0
10 01:35 Calm 10.00 Fair CLR 75.7 63.5 66% 78 29.9 0.0
10 01:15 S 3 10.00 Fair CLR 76.3 63.5 65% 78 29.9 0.0
10 00:55 Calm 7.00 Fair CLR 76.3 63.5 65% 78 29.9 0.0
10 00:35 Calm 10.00 Fair CLR 75.9 63.5 66% 78 29.91 0.0
10 00:15 Calm 10.00 Fair CLR 76.1 63.1 64% 78 29.9 0.0
09 23:55 E 5 7.00 Fair CLR 76.3 63.5 65% 78 29.9 0.0
09 23:35 Calm 10.00 Fair CLR 77.2 62.6 61% 79 29.9 0.0
09 23:15 S 3 10.00 Fair CLR 77 63.1 62% 79 29.9 0.0
09 22:55 SE 5 7.00 Fair CLR 76.8 63.9 64% 79 29.9 0.0
09 22:35 Calm 10.00 Fair CLR 75.4 64.2 68% 77 29.9 0.0
09 22:15 Calm 10.00 Fair CLR 76.6 63.9 65% 78 29.9 0.0
09 21:55 Calm 10.00 Partly Cloudy SCT038 SCT055 SCT065 78.3 63.9 61% 80 29.89 0.0
09 21:35 Calm 10.00 Overcast BKN037 BKN044 OVC100 79.7 64.2 59% 81 29.9 0.0
09 21:15 S 7 7.00 Mostly Cloudy SCT041 BKN050 BKN080 82.2 62.8 52% 83 29.89 0.0
09 20:55 SW 5 7.00 Fair CLR 82.2 62.4 51% 83 29.89 0.0
09 20:35 SW 3 7.00 Fair CLR 82.6 62.1 50% 83 29.89 0.0
09 20:15 S 5 7.00 Fair CLR 83.1 61.5 48% 84 29.88 0.0
09 19:55 SW 3 7.00 Fair CLR 83.7 59.9 88 83.7 45% 84 29.88 0.0
09 19:35 SW 6 10.00 Fair CLR 85.5 59.4 41% 85 29.88 0.0
09 19:15 SW 9 10.00 Fair CLR 86 58.6 40% 85 29.88 0.0
09 18:55 SW 10 10.00 Fair CLR 86.4 57.7 38% 85 29.88 0.0
09 18:35 W 8 7.00 Fair CLR 87.1 57.9 37% 86 29.89 0.0
09 18:15 SW 9 10.00 Fair CLR 87.1 59.2 39% 86 29.89 0.0
09 17:55 W 10 7.00 Fair CLR 87.6 58.3 37% 87 29.89 0.0
09 17:35 W 12 G 17 10.00 Fair CLR 87.8 57.2 35% 87 29.9 0.0
09 17:15 W 10 G 16 10.00 Partly Cloudy SCT046 88 58.5 37% 87 29.9 0.0
09 16:55 SW 9 G 16 7.00 Partly Cloudy SCT044 88 59 38% 87 29.9 0.0
09 16:35 SW 9 10.00 Partly Cloudy SCT044 87.6 58.5 37% 87 29.9 0.0
09 16:15 SW 9 7.00 Partly Cloudy SCT042 SCT049 87.8 59.5 39% 87 29.91 0.0
09 15:55 SW 9 G 17 7.00 Mostly Cloudy BKN040 86.4 58.6 39% 86 29.92 0.0
09 15:35 SW 9 10.00 Fair CLR 87.3 59.4 39% 87 29.92 0.0
09 15:15 SW 10 G 16 10.00 Partly Cloudy SCT043 86.5 59.7 40% 86 29.93 0.0
09 14:55 W 13 G 16 10.00 Partly Cloudy SCT042 87.1 58.3 38% 86 29.93 0.0
09 14:35 W 10 7.00 Partly Cloudy SCT042 86.2 58.5 39% 85 29.94 0.0
09 14:15 SW 12 7.00 Partly Cloudy SCT042 85.6 58.8 40% 85 29.94 0.0
09 13:55 SW 12 G 17 7.00 Partly Cloudy SCT042 85.8 59.5 85.8 71.8 41% 85 29.95 0.0
09 13:35 W 10 G 16 7.00 Partly Cloudy SCT038 85.1 58.1 40% 84 29.96 0.0
09 13:15 W 10 10.00 Mostly Cloudy SCT038 BKN048 85.1 59.2 42% 85 29.97 0.0
09 12:55 SW 13 G 17 7.00 Mostly Cloudy SCT036 BKN046 BKN050 84.2 59 43% 84 29.97 0.0
09 12:35 W 10 7.00 Partly Cloudy SCT034 SCT042 SCT050 83.8 60.4 45% 84 29.97 0.0
09 12:15 SW 8 7.00 Partly Cloudy SCT034 SCT040 83.3 60.1 46% 83 29.97 0.0
09 11:55 W 8 7.00 Partly Cloudy SCT036 SCT043 SCT049 83.7 58.8 43% 83 29.98 0.0
09 11:35 SW 9 7.00 Fair CLR 82.8 59.5 45% 83 29.98 0.0
09 11:15 W 10 7.00 Partly Cloudy SCT028 82.4 59.4 46% 83 29.98 0.0
09 10:55 SW 10 10.00 Fair CLR 81.7 61 50% 82 29.98 0.0
09 10:35 SW 6 10.00 Fair CLR 80.8 61.9 53% 82 29.98 0.0
09 10:15 W 5 10.00 Fair CLR 80.2 62.6 55% 82 29.98 0.0
09 09:55 W 7 10.00 Fair CLR 79 61.5 55% 80 29.98 0.0
09 09:35 W 5 7.00 Fair CLR 78.3 61.7 57% 80 29.98 0.0
09 09:15 SW 7 7.00 Fair CLR 77.4 61.7 59% 79 29.98 0.0
09 08:55 W 7 10.00 Fair CLR 76.1 61.5 61% 78 29.98 0.0
09 08:35 SW 6 10.00 Fair CLR 74.3 61 63% 29.97 0.0
09 08:15 SW 3 7.00 Fair CLR 73.2 61 66% 29.96 0.0
09 07:55 SW 3 7.00 Fair CLR 71.6 60.1 71.6 67.1 67% 29.96 0.0
09 07:35 Calm 7.00 Fair CLR 70.2 59.4 69% 29.95 0.0
09 07:15 Calm 7.00 Fair CLR 69.3 58.8 70% 29.94 0.0
09 06:55 Calm 7.00 Fair CLR 68.9 58.3 69% 29.94 0.0
09 06:35 Calm 10.00 Fair CLR 68.9 58.1 69% 29.95 0.0
09 06:15 Calm 10.00 Fair CLR 68.2 58.1 70% 29.95 0.0
09 05:55 Calm 10.00 Fair CLR 69.4 58.1 67% 29.96 0.0
09 05:35 Calm 10.00 Fair CLR 69.8 58.3 67% 29.95 0.0
09 05:15 Calm 10.00 Fair CLR 69.3 59 70% 29.96 0.0
09 04:55 Calm 10.00 Fair CLR 69.1 58.6 70% 29.96 0.0
09 04:35 Calm 10.00 Fair CLR 68.9 59.2 71% 29.97 0.0
09 04:15 Calm 7.00 Fair CLR 67.6 59.7 76% 29.96 0.0
09 03:55 Calm 7.00 Fair CLR 67.3 59 75% 29.96 0.0
09 03:35 Calm 7.00 Fair CLR 68 59.5 74% 29.96 0.0
09 03:15 Calm 10.00 Fair CLR 67.1 59 75% 29.97 0.0
09 02:55 Calm 7.00 Fair CLR 68.7 59.4 72% 29.97 0.0
09 02:35 Calm 7.00 Fair CLR 69.3 59.9 72% 29.98 0.0
09 02:15 Calm 10.00 Fair CLR 70 59.5 70% 29.98 0.0
09 01:55 Calm 10.00 Fair CLR 68.9 59.7 81.1 68.7 73% 29.98 0.0
09 01:35 Calm 10.00 Fair CLR 71.8 59.5 65% 29.98 0.0
09 01:15 Calm 7.00 Fair CLR 71.8 59.2 65% 29.98 0.0
09 00:55 Calm 10.00 Fair CLR 71.4 59.5 66% 29.99 0.0
09 00:35 Calm 10.00 Fair CLR 72.5 59.9 65% 29.99 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)