Weather observations for the past three days for
East Troy Municipal Airport
Metric (Imperial)
Date Time (cdt) Wind (kph) Vis. (km) Weather Sky Cond. Temperature (ºC) Relative Humidity Wind Chill (°C) Heat Index (°C) Pressure Precipitation (cm)
Air Dwpt 6 hour altimeter (cm) sea level (mb) 1 hr 3 hr 6 hr
Max. Min.
30 14:35 E 13 16.09 Light Rain BKN036 OVC047 5.6 1.9 77% 3 76.17 0.0
30 14:15 E 9 16.09 Drizzle BKN045 OVC060 8.1 2.5 68% 7 76.17 0.0
30 13:55 Calm 16.09 Overcast BKN043 OVC060 8.2 2.6 68% 76.17 0.0
30 13:35 N 6 16.09 Light Drizzle SCT034 BKN041 OVC060 8.3 1.9 64% 76.17 0.0
30 13:15 W 6 16.09 Light Drizzle BKN043 OVC049 9 -0.2 53% 76.2 0.0
30 12:55 Calm 16.09 Light Drizzle BKN043 OVC049 9.6 1 10.1 1 55% 76.2 0.0
30 12:30 W 6 16.09 Overcast SCT047 OVC055 9.7 0.8 54% 76.2 0.0
30 12:15 Calm 16.09 Overcast SCT046 BKN065 OVC080 9.5 0.9 55% 76.2 0.0
30 11:55 Calm 16.09 Overcast SCT048 OVC080 9.8 0.4 52% 76.2 0.0
30 11:35 Calm 16.09 Overcast OVC080 9 0.4 55% 76.23 0.0
30 11:15 Calm 16.09 Overcast SCT031 OVC090 8.6 0.6 58% 76.25 0.0
30 10:55 Calm 16.09 Overcast OVC090 8.4 1.8 63% 76.23 0.0
30 10:30 Calm 16.09 Mostly Cloudy BKN090 7.9 0.9 62% 76.25 0.0
30 10:15 Calm 16.09 Partly Cloudy SCT090 SCT110 7.8 1.3 64% 76.25 0.0
30 09:55 Calm 16.09 Partly Cloudy SCT060 SCT120 7.8 1.6 65% 76.25 0.0
30 09:35 Calm 16.09 Partly Cloudy SCT100 6 2.9 81% 76.28 0.0
30 09:15 NE 6 16.09 Partly Cloudy SCT100 5.6 2.9 83% 76.28 0.0
30 08:55 Calm 16.09 Partly Cloudy SCT110 4.8 2.4 85% 76.28 0.0
30 08:35 NE 6 16.09 Partly Cloudy SCT110 4.3 3 91% 76.25 0.0
30 08:15 NE 6 16.09 Partly Cloudy SCT003 4.5 4.5 100% 76.25 0.0
30 07:55 Calm 8.05 Fog/Mist SCT001 3.8 3.8 100% 76.28 0.0
30 07:35 Calm 16.09 Partly Cloudy SCT065 3.4 3.4 100% 76.28 0.0
30 07:15 Calm 16.09 Fair CLR 1.5 1.5 100% 76.25 0.0
30 06:55 Calm 16.09 Fair CLR 0.8 0.8 2.5 -0.2 100% 76.25 0.0
30 06:35 Calm 8.05 Fog/Mist SCT002 0.2 0.2 100% 76.25 0.0
30 06:15 Calm 4.02 Fog/Mist BKN002 0 0 100% 76.25 0.0
30 05:55 Calm 0.80 Freezing Fog OVC002 -0.2 -0.2 100% 76.25 0.0
30 05:35 Calm 0.24 Fog OVC002 0 0 100% 76.25 0.0
30 05:15 Calm 0.24 Fog OVC002 0.1 0.1 100% 76.25 0.0
30 04:55 Calm 1.21 Fog/Mist OVC002 1 1 100% 76.23 0.0
30 04:35 Calm 0.80 Fog BKN002 0 0 100% 76.23 0.0
30 04:15 Calm 2.82 Fog/Mist SCT001 0.9 0.9 100% 76.23 0.0
30 03:55 Calm 1.61 Fog/Mist OVC001 0.3 0.3 100% 76.23 0.0
30 03:35 Calm 0.80 Fog OVC001 0 0 100% 76.23 0.0
30 03:15 Calm 0.40 Fog OVC001 0.6 0.6 100% 76.23 0.0
30 02:55 Calm 0.40 Fog OVC001 1.1 1.1 100% 76.23 0.0
30 02:35 N 6 16.09 Fair CLR 2.2 2.2 100% 76.23 0.0
30 02:15 Calm 11.27 Fair CLR 2 2 100% 76.23 0.0
30 01:55 Calm 16.09 Fair CLR 1.7 1.7 100% 76.23 0.0
30 01:35 Calm 11.27 Fair CLR 1.9 1.9 100% 76.23 0.0
30 01:15 Calm 16.09 Fair CLR 2.1 2.1 100% 76.23 0.0
30 00:55 Calm 16.09 Fair CLR 2.4 2.4 6.5 2.1 100% 76.25 0.0
30 00:35 Calm 16.09 Fair CLR 2.2 2.1 99% 76.25 0.0
30 00:15 W 6 16.09 Fair CLR 2.5 2.4 99% 76.25 0.0
29 23:55 W 6 16.09 Fair CLR 2.5 2.5 100% 76.25 0.0
29 23:35 Calm 16.09 Fair CLR 2.6 2.3 98% 76.23 0.0
29 23:15 Calm 16.09 Fair CLR 3.4 3 97% 76.23 0.0
29 22:55 Calm 16.09 Fair CLR 3.2 2.5 95% 76.23 0.0
29 22:35 Calm 16.09 Fair CLR 4 2.5 90% 76.23 0.0
29 22:15 Calm 16.09 Partly Cloudy SCT090 4 2.5 90% 76.25 0.0
29 21:55 Calm 16.09 Mostly Cloudy BKN090 5.2 2.7 84% 76.28 0.0
29 21:35 NW 6 16.09 Mostly Cloudy BKN090 5.6 3.1 84% 76.28 0.0
29 21:15 Calm 16.09 Overcast OVC090 5 4 93% 76.25 0.0
29 20:55 Calm 16.09 Overcast SCT014 OVC080 5.2 4.1 93% 76.23 0.0
29 20:35 Calm 16.09 Overcast SCT016 BKN070 OVC080 5.3 4.4 94% 76.2 0.0
29 20:15 Calm 16.09 Overcast SCT025 SCT030 OVC070 5.8 4.2 90% 76.2 0.0
29 19:55 Calm 16.09 Overcast BKN028 BKN039 OVC070 6.1 4.3 88% 76.2 0.0
29 19:35 W 7 16.09 Light Drizzle OVC032 6.2 4.2 87% 5 76.2 0.0
29 19:15 Calm 16.09 Overcast SCT029 BKN036 OVC049 6.4 3.7 83% 76.2 0.0
29 18:55 Calm 16.09 Overcast SCT029 BKN038 OVC049 6.5 4 6.7 5.5 84% 76.17 0.0 0.08
29 18:35 Calm 16.09 Overcast BKN029 OVC035 6.5 3.9 84% 76.17 0.0
29 18:15 N 6 16.09 Light Drizzle BKN021 BKN029 OVC035 6.5 4.4 87% 76.17 0.0
29 17:55 N 7 16.09 Overcast OVC021 6.2 4.1 87% 5 76.17 0.0
29 17:35 N 9 16.09 Overcast SCT013 OVC020 6.4 3.9 84% 5 76.15 0.0
29 16:55 N 9 16.09 Light Rain BKN010 OVC021 6.7 4.8 88% 5 76.15 0.0 0.03
29 16:35 Calm 16.09 Overcast BKN008 BKN024 OVC055 6.5 4.6 88% 76.15 0.0 0.03
29 16:15 Calm 6.44 Light Rain SCT008 BKN025 OVC033 6 4.7 91% 76.15 0.0
29 15:55 N 7 16.09 Rain SCT010 SCT015 OVC025 5.8 4.2 90% 5 76.17 0.0 0.05
29 15:35 N 9 16.09 Light Rain SCT010 BKN017 OVC029 6 4.4 90% 4 76.15 0.0
29 15:15 N 6 16.09 Light Drizzle OVC031 6.1 4 87% 76.15 0.0
29 14:55 N 7 16.09 Light Rain SCT009 SCT023 OVC033 6 4.5 90% 5 76.15 0.0 0.05
29 14:35 N 6 8.05 Rain BKN021 OVC029 5.7 4.5 92% 76.15 0.0 0.03
29 14:15 N 11 8.05 Drizzle SCT011 OVC021 5.6 4.1 90% 3 76.15 0.0 0.03
29 13:55 NE 7 6.44 Rain BKN009 BKN015 OVC021 5.9 4.5 91% 5 76.12 0.0
29 13:35 N 7 6.44 Light Rain OVC013 6 4.5 90% 5 76.12 0.0
29 13:15 NE 6 11.27 Drizzle BKN011 OVC020 5.9 4.1 88% 76.12 0.0
29 12:55 N 11 8.05 Light Rain SCT011 OVC022 6 4.2 7.5 6 88% 4 76.12 0.0 0.03 0.03
29 12:35 NE 9 8.05 Drizzle SCT013 OVC020 6.1 4.3 88% 4 76.12 0.0
29 12:15 NE 13 8.05 Light Rain SCT013 OVC020 6.3 4.4 88% 4 76.12 0.0
29 11:55 NE 6 16.09 Drizzle OVC020 6.3 3.9 85% 76.12 0.0
29 11:35 NE 9 16.09 Light Drizzle OVC016 6.3 4.1 86% 5 76.12 0.0
29 11:15 N 7 16.09 Light Rain OVC018 6.5 4.4 87% 5 76.12 0.0
29 10:55 NE 7 16.09 Light Drizzle OVC016 7.1 4.1 81% 6 76.1 0.0
29 10:35 N 6 16.09 Light Drizzle OVC012 7 4.6 85% 76.1 0.0
29 10:15 N 6 16.09 Overcast OVC012 7 4.6 85% 76.1 0.0
29 09:55 N 9 16.09 Overcast OVC010 7 4.7 85% 5 76.07 0.0
29 09:35 NE 11 16.09 Overcast OVC010 7.3 5.2 87% 5 76.05 0.0
29 09:15 N 9 16.09 Overcast OVC008 7.4 5.5 88% 6 76.07 0.0
29 08:55 NE 11 16.09 Overcast OVC008 7.3 5.5 88% 5 76.05 0.0
29 08:35 NE 7 16.09 Overcast OVC008 7.3 6 92% 6 76.02 0.0
29 08:15 NE 7 16.09 Overcast OVC006 6.9 5.6 92% 6 76.02 0.0
29 07:55 NE 11 16.09 Overcast BKN006 OVC045 6.6 5.5 93% 5 76.02 0.0
29 07:35 NE 9 16.09 Rain BKN045 OVC049 6.5 5.2 92% 5 76.02 0.0
29 07:15 NE 6 16.09 Rain OVC049 6.5 5.1 91% 76.05 0.0
29 06:55 Calm 16.09 Drizzle SCT045 BKN065 OVC075 6.6 5.5 11.5 6.5 93% 76.02 0.0 0.08
29 06:35 Calm 16.09 Drizzle SCT065 OVC075 6.5 5 90% 76.02 0.0
29 06:15 N 6 16.09 Drizzle OVC065 6.5 5 90% 76.02 0.0
29 05:55 N 6 16.09 Overcast OVC065 6.6 5 90% 76.02 0.0 0.03
29 05:35 N 6 16.09 Light Drizzle OVC065 6.7 5.5 92% 76 0.0 0.03
29 05:15 N 7 16.09 Light Rain OVC055 6.9 5.6 92% 6 76.02 0.0 0.03
29 04:55 NE 7 16.09 Rain OVC055 7.2 5.8 91% 6 76 0.0
29 04:35 NE 11 16.09 Light Rain OVC055 8 6.7 92% 6 76 0.0
29 04:15 N 9 16.09 Light Rain OVC055 8.3 7.4 94% 7 76 0.0
29 03:55 Calm 16.09 Light Rain SCT047 OVC055 8.3 7 92% 76 0.0 0.05 0.05
29 03:35 Calm 16.09 Rain BKN055 OVC065 8.6 6.1 84% 76 0.0 0.05
29 03:15 Calm 16.09 Light Rain OVC050 8.8 6.4 85% 76 0.0 0.03
29 02:55 W 7 16.09 Light Rain OVC050 9 6.6 85% 8 76 0.0
29 02:35 W 9 16.09 Drizzle SCT048 OVC065 9.8 5.4 74% 9 76 0.0
29 02:15 W 7 16.09 Overcast BKN065 OVC075 10.5 4.4 66% 75.97 0.0
29 01:55 NW 6 16.09 Overcast SCT065 OVC075 10.3 5.3 71% 75.97 0.0
29 01:35 NW 6 16.09 Light Drizzle OVC065 10.6 4.2 65% 75.97 0.0
29 01:15 N 7 16.09 Overcast OVC075 11 3.7 61% 76 0.0
29 00:55 N 13 16.09 Light Rain OVC075 11.6 3.3 15.5 11.5 57% 76 0.0
29 00:35 N 13 16.09 Overcast SCT050 SCT060 OVC075 12 2.8 54% 76.02 0.0
29 00:15 N 15 16.09 Light Rain BKN060 BKN075 OVC085 12.4 3 53% 76.02 0.0
28 23:55 N 9 16.09 Overcast OVC070 12.7 3.1 52% 76.05 0.0
28 23:35 N 9 16.09 Overcast BKN070 OVC080 13 1.9 47% 76.05 0.0
28 23:15 W 11 16.09 Rain SCT060 BKN070 OVC080 12.3 5.2 62% 76.05 0.0
28 22:55 Calm 16.09 Overcast BKN080 OVC090 13 3.8 54% 76.02 0.0
28 22:35 Calm 16.09 Overcast OVC090 12.4 4.9 60% 76 0.0
28 22:15 NW 7 16.09 Overcast OVC090 13.1 3.9 54% 76 0.0
28 21:55 NW 7 16.09 Overcast SCT075 OVC100 13.5 3.9 53% 76 0.0
28 21:35 W 7 16.09 Overcast SCT075 OVC100 13.3 4.4 55% 76 0.0
28 21:15 NW 6 16.09 Overcast OVC100 13.7 4.3 53% 75.97 0.0
28 20:55 NW 6 16.09 Overcast OVC110 14 4.2 52% 75.97 0.0
28 20:35 NW 6 16.09 Mostly Cloudy BKN120 14.5 3.8 49% 75.92 0.0
28 20:15 NW 9 16.09 Overcast OVC120 14.3 4.4 52% 75.92 0.0
28 19:55 W 9 16.09 Mostly Cloudy BKN120 14.1 4.6 53% 75.95 0.0
28 19:35 W 7 16.09 Partly Cloudy SCT120 14.7 4.2 50% 75.92 0.0
28 19:15 W 7 16.09 Fair CLR 14.8 4.9 52% 75.92 0.0
28 18:55 W 11 16.09 Fair CLR 15.5 3.9 17.5 14.4 46% 75.92 0.0
28 18:35 W 13 16.09 Fair CLR 15.1 4.5 49% 75.92 0.0
28 18:15 W 11 16.09 Fair CLR 16.4 3.7 43% 75.9 0.0
28 17:55 W 13 16.09 Fair CLR 16.9 4.4 44% 75.9 0.0
28 17:35 W 7 16.09 Fair CLR 16.4 4.4 45% 75.9 0.0
28 17:15 W 9 16.09 Fair CLR 16 4.9 48% 75.92 0.0
28 16:55 W 15 16.09 Fair CLR 16.6 5 46% 75.92 0.0
28 16:35 W 7 G 28 16.09 Fair CLR 16.4 4.7 46% 75.92 0.0
28 16:15 W 19 G 26 16.09 Fair CLR 16.5 5.3 48% 75.92 0.0
28 15:55 W 11 16.09 Fair CLR 16.5 5.1 47% 75.92 0.0
28 15:35 W 13 G 31 16.09 Fair CLR 16.8 5.5 47% 75.92 0.0
28 15:15 W 15 16.09 Fair CLR 16.5 5.8 49% 75.95 0.0
28 14:55 W 19 G 26 16.09 Partly Cloudy SCT044 16.4 6.4 52% 76 0.0
28 14:35 W 17 G 31 16.09 Partly Cloudy SCT042 16.3 6.3 52% 76 0.0
28 14:15 W 20 G 26 16.09 Partly Cloudy SCT040 16.2 6.2 52% 76.02 0.0
28 13:55 W 17 G 30 16.09 Partly Cloudy SCT038 15.5 6.5 55% 76 0.0
28 13:35 W 15 G 28 16.09 Partly Cloudy SCT038 15.3 6 54% 76.02 0.0
28 13:15 W 19 G 30 16.09 Partly Cloudy SCT038 15 6.7 58% 76.02 0.0
28 12:55 W 19 G 30 16.09 Partly Cloudy SCT036 14.8 6.2 15 10 57% 76.02 0.0
28 12:35 W 17 G 28 16.09 Partly Cloudy SCT034 14.3 5.7 57% 75.97 0.0
28 12:15 W 17 16.09 Partly Cloudy SCT034 13.8 5.7 58% 75.97 0.0
28 11:55 W 20 16.09 Partly Cloudy SCT032 13.1 5.4 60% 75.95 0.0
28 11:35 W 19 G 28 16.09 Mostly Cloudy BKN030 BKN037 12.8 5.7 62% 75.97 0.0
28 11:15 W 17 G 28 16.09 Mostly Cloudy BKN028 12.8 5.6 62% 75.95 0.0
28 10:55 W 22 G 31 16.09 Mostly Cloudy BKN028 BKN035 12.8 5.9 63% 75.92 0.0
28 10:35 W 17 16.09 Mostly Cloudy BKN028 11.8 5.8 67% 75.9 0.0
28 10:15 NW 24 G 31 16.09 Partly Cloudy SCT028 12.1 5.5 64% 75.9 0.0
28 09:55 NW 28 G 37 16.09 Overcast OVC028 10.9 4.7 66% 75.9 0.0
28 09:35 W 28 G 39 16.09 Overcast OVC028 10.4 4.6 68% 75.9 0.0
28 09:15 W 24 G 37 16.09 Overcast OVC026 10.7 5.2 69% 75.84 0.0
28 08:55 W 26 G 31 16.09 Overcast OVC026 10.8 5.6 71% 75.79 0.0
28 08:35 W 26 G 39 16.09 Overcast OVC024 10.6 5.2 70% 75.77 0.0
28 08:15 W 22 G 31 16.09 Overcast OVC024 10.5 5.1 70% 75.74 0.0
28 07:55 W 31 G 44 16.09 Overcast OVC024 10.3 4.9 69% 75.72 0.0
28 07:35 W 28 G 41 16.09 Overcast OVC024 10 5.1 72% 7 75.67 0.0
28 07:15 W 26 G 43 16.09 Overcast OVC024 10 5 71% 7 75.64 0.0
28 06:55 W 31 G 44 16.09 Overcast BKN020 OVC025 10 5.7 14.6 9.5 75% 7 75.59 0.0
28 06:35 W 26 G 41 16.09 Overcast OVC016 9.9 6.5 80% 7 75.54 0.0
28 06:15 W 24 G 39 16.09 Overcast OVC016 9.6 7 84% 7 75.51 0.0
28 05:55 W 26 G 37 16.09 Overcast BKN014 OVC019 9.6 7.4 86% 7 75.49 0.0
28 05:35 W 24 G 39 16.09 Overcast OVC014 10.1 7.3 83% 75.44 0.0
28 04:55 W 24 G 41 16.09 Overcast OVC014 9.8 7.7 87% 7 75.41 0.0
28 04:35 W 26 G 37 16.09 Overcast OVC014 10.1 7.6 85% 75.39 0.0
28 04:15 W 20 G 31 16.09 Overcast OVC016 10.5 7.6 82% 75.39 0.0
28 03:55 W 31 G 43 16.09 Overcast OVC018 10.8 7.5 80% 75.36 0.0
28 03:35 W 26 G 41 16.09 Overcast OVC018 11 7.5 79% 75.34 0.0
28 03:15 W 30 G 44 16.09 Overcast OVC016 11.4 7.7 78% 75.34 0.0
28 02:35 W 28 G 46 16.09 Overcast OVC018 12.2 8.5 78% 75.29 0.0
28 01:55 W 24 G 44 16.09 Overcast OVC024 12.8 9.5 81% 75.26 0.0
28 01:35 W 30 G 41 16.09 Overcast OVC022 13.5 9.8 79% 75.26 0.0
28 00:55 W 26 G 39 16.09 Overcast SCT016 BKN021 OVC031 14.7 11.6 18.8 14.7 82% 75.23 0.0
28 00:35 W 19 G 31 16.09 Mostly Cloudy SCT018 BKN033 15.2 12.1 82% 75.21 0.0
28 00:15 W 20 G 30 16.09 Mostly Cloudy SCT016 BKN035 15.6 12.4 81% 75.21 0.0
27 23:55 W 20 G 31 16.09 Overcast BKN016 OVC031 16.3 13.6 84% 75.18 0.0
27 23:35 SW 17 16.09 Overcast SCT014 BKN020 OVC031 16.6 14.1 85% 75.16 0.0
27 23:15 SW 13 G 26 16.09 Thunderstorm in Vicinity BKN015 BKN022 BKN029 16.3 14.3 88% 75.13 0.0
27 22:55 SW 17 G 39 16.09 Thunderstorm SCT012 SCT050 SCT060 16.5 14.5 88% 75.16 0.0
27 22:35 SW 24 G 37 16.09 Overcast BKN012 BKN100 OVC120 16.5 14.7 89% 75.13 0.0
27 22:15 SW 19 G 30 16.09 Light Drizzle SCT012 SCT100 BKN120 16.5 14.7 89% 75.11 0.0
27 21:55 S 17 G 28 16.09 Partly Cloudy SCT043 SCT075 SCT090 16.7 14.5 87% 75.06 0.0
27 21:35 S 19 G 28 16.09 Mostly Cloudy SCT041 SCT075 BKN085 17 14.6 86% 75.06 0.0
27 21:15 S 13 G 28 16.09 Partly Cloudy SCT041 BKN085 SCT120 17 14.8 87% 75.08 0.0
27 20:55 S 13 16.09 Partly Cloudy SCT085 SCT120 17.1 15 88% 75.06 0.0
27 20:35 S 11 G 26 16.09 Fair CLR 17.3 14.8 85% 75.03 0.0
27 20:15 S 20 G 33 16.09 Fair CLR 17.5 14.7 84% 75.06 0.0
27 19:55 S 17 G 35 16.09 Partly Cloudy SCT022 17.8 14.5 81% 75.06 0.0
27 19:30 S 15 G 31 16.09 Mostly Cloudy BKN022 18.1 14.3 79% 75.06 0.0
27 19:15 S 17 16.09 Fair CLR 18.3 14.2 77% 75.06 0.0
27 18:55 S 17 G 30 16.09 Partly Cloudy SCT070 18.9 14.1 19.9 11.1 74% 75.06 0.0
27 18:35 S 19 G 31 16.09 Mostly Cloudy SCT026 SCT032 BKN070 19 14 73% 75.08 0.0
27 18:15 S 22 G 41 16.09 Overcast SCT031 SCT039 OVC060 19.4 14 71% 75.13 0.0
27 17:55 S 17 G 31 16.09 Overcast SCT033 BKN039 OVC060 19.5 13.9 70% 75.13 0.0
27 17:35 S 15 G 31 16.09 Overcast OVC037 19.8 13.6 68% 75.13 0.0
27 17:15 S 13 16.09 Mostly Cloudy BKN035 BKN043 19.5 13.7 69% 75.11 0.0
27 16:55 S 17 G 28 16.09 Partly Cloudy SCT034 19.9 14 69% 75.11 0.0
27 16:35 S 13 16.09 Fair CLR 18.5 14.3 77% 75.11 0.0
27 16:15 SE 17 16.09 Partly Cloudy SCT019 18.1 14.2 78% 75.08 0.0
27 15:55 SE 17 G 26 16.09 Partly Cloudy SCT019 17.9 14 78% 75.08 0.0
27 15:35 SE 20 G 33 16.09 Partly Cloudy SCT015 SCT023 15.9 14.8 93% 75.06 0.0
27 15:15 SE 22 G 31 16.09 Overcast OVC013 15.4 14.8 96% 75.11 0.0
27 14:55 SE 19 G 35 16.09 Overcast OVC011 14.5 14.3 99% 75.11 0.0
Date Time (cdt) Wind (kph) Vis. (km) Weather Sky Cond. Air Dwpt Max. Min. Relative Humidity Wind Chill (°C) Heat Index (°C) altimeter (cm) sea level (mb) 1 hr 3 hr 6 hr
6 hour
Temperature (ºC) Pressure Precipitation (cm)