Weather observations for the past three days for
Prairie Du Chien Municipal Airport
Metric (Imperial)
Date Time (cst) 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.
06 20:15 Calm 1.21 Light Snow OVC007 -4.3 -5.3 93% 76.12 0.0
06 19:55 E 6 1.21 Light Snow OVC007 -4.2 -5.5 91% 76.1 0.0
06 19:35 E 6 2.01 Light Snow OVC009 -4.1 -5.7 89% 76.1 0.0
06 19:15 Calm 2.41 Light Snow OVC011 -3.7 -6.4 82% 76.1 0.0
06 18:55 Calm 6.44 Light Snow SCT011 BKN018 OVC023 -3 -7.9 69% 76.1 0.0
06 18:35 E 6 16.09 Overcast BKN027 BKN035 OVC043 -2.8 -8.4 66% 76.1 0.0
06 18:15 E 6 16.09 Overcast BKN040 BKN046 OVC050 -2.8 -8.3 66% 76.1 0.0
06 17:55 Calm 16.09 Overcast BKN055 OVC065 -2.7 -7.8 -1.5 -3.7 68% 76.07 0.0 0.1
06 17:15 Calm 16.09 Overcast OVC065 -2.6 -7.8 68% 76.05 0.0
06 16:55 Calm 16.09 Overcast BKN075 OVC090 -2.3 -7.6 67% 76.02 0.0
06 16:35 Calm 16.09 Overcast OVC090 -2.3 -7.9 66% 76 0.0
06 16:15 Calm 16.09 Overcast BKN090 OVC110 -2.4 -8.1 65% 76 0.0
06 15:55 Calm 16.09 Mostly Cloudy SCT070 BKN100 BKN120 -2.5 -8.1 66% 76 0.0
06 15:35 Calm 16.09 Mostly Cloudy BKN070 BKN110 -2 -8.2 63% 75.97 0.0
06 15:15 Calm 16.09 Overcast OVC070 -2 -8 64% 75.97 0.0
06 14:55 Calm 16.09 Mostly Cloudy SCT031 BKN070 -2.2 -8.2 64% 75.97 0.0 0.03 0.1
06 14:35 Calm 16.09 Mostly Cloudy BKN031 BKN070 -2 -8.6 61% 75.97 0.0 0.03
06 14:15 Calm 16.09 Overcast OVC029 -2.2 -8.7 61% 75.97 0.0
06 13:55 Calm 16.09 Partly Cloudy SCT029 -2.1 -9 60% 76 0.0 0.03
06 13:35 Calm 16.09 Fair CLR -1.6 -8.8 58% 76 0.0 0.03
06 13:15 Calm 16.09 Partly Cloudy SCT030 -2.6 -8.7 63% 76 0.0
06 12:55 Calm 16.09 Partly Cloudy SCT030 -2.6 -8.6 64% 76 0.0 0.05
06 12:35 Calm 16.09 Partly Cloudy SCT030 -3 -8.8 65% 76.05 0.0 0.03
06 12:15 Calm 16.09 Mostly Cloudy BKN030 -3.2 -8.3 68% 76.07 0.0 0.03
06 11:55 Calm 16.09 Overcast OVC030 -3.9 -8.1 -3.5 -10.7 73% 76.1 0.0 0.05 0.05
06 11:35 Calm 16.09 Mostly Cloudy BKN030 -4.2 -8.4 73% 76.12 0.0 0.05
06 11:15 Calm 16.09 Fair CLR -3.9 -8.3 72% 76.12 0.0 0.03
06 10:55 Calm 16.09 Fair CLR -5 -8.7 76% 76.15 0.0
06 10:35 Calm 16.09 Partly Cloudy SCT035 -5.5 -9 77% 76.15 0.0
06 10:15 Calm 16.09 Partly Cloudy SCT035 -6.2 -9 81% 76.15 0.0
06 09:55 Calm 16.09 Partly Cloudy SCT035 -6.6 -9 83% 76.15 0.0
06 09:35 Calm 16.09 Fair CLR -7.3 -9.4 85% 76.15 0.0
06 09:15 Calm 16.09 Fair CLR -8 -9.5 89% 76.1 0.0
06 08:55 Calm 16.09 Fair CLR -8.5 -9.8 90% 76.1 0.0
06 08:35 Calm 16.09 Fair CLR -10.1 -11.3 91% 76.05 0.0
06 08:15 Calm 16.09 Fair CLR -10.5 -11.5 92% 76.02 0.0
06 07:55 Calm 16.09 Fair CLR -10.6 -11.7 92% 76 0.0
06 07:35 Calm 16.09 Fair CLR -10.5 -11.7 91% 75.97 0.0
06 07:15 Calm 16.09 Fair CLR -9.6 -10.6 93% 75.95 0.0
06 06:55 Calm 16.09 Fair CLR -9.1 -10.5 90% 75.97 0.0
06 06:35 Calm 16.09 Fair CLR -8.3 -10.1 87% 75.95 0.0
06 06:15 Calm 16.09 Fair CLR -6.8 -9.4 82% 75.92 0.0
06 05:55 Calm 16.09 Fair CLR -6.4 -9.2 -0.2 -6.4 81% 75.92 0.0
06 05:35 NW 7 16.09 Partly Cloudy SCT018 -6.1 -9.1 80% -9 75.9 0.0
06 05:15 N 15 16.09 Overcast OVC018 -5.7 -8.7 80% -11 75.9 0.0
06 04:55 NW 9 16.09 Mostly Cloudy BKN016 -5.5 -8.2 82% -9 75.9 0.0
06 04:35 NW 17 G 28 16.09 Mostly Cloudy BKN018 -5 -8.3 78% -10 75.84 0.0
06 04:15 NW 20 16.09 Overcast OVC018 -3.7 -6.7 80% -9 75.82 0.0
06 03:55 NW 22 16.09 Overcast OVC018 -3.4 -6.5 79% -9 75.82 0.0
06 03:35 NW 20 16.09 Overcast BKN016 OVC027 -2.7 -5.5 81% -8 75.82 0.0
06 03:15 NW 19 16.09 Overcast SCT016 OVC025 -2.2 -5 81% -7 75.77 0.0
06 02:55 W 26 16.09 Overcast OVC016 -1.8 -4.5 82% -8 75.77 0.0
06 02:35 NW 24 G 31 16.09 Overcast OVC012 -1.4 -3.7 85% -7 75.74 0.0
06 02:15 W 22 16.09 Overcast OVC012 -0.8 -2.9 86% -6 75.74 0.0
06 01:55 W 9 16.09 Overcast OVC014 -0.5 -2.3 88% -3 75.72 0.0
06 01:35 W 9 16.09 Overcast OVC014 -0.5 -2.4 87% -3 75.69 0.0
06 01:15 NW 11 16.09 Overcast OVC022 -0.3 -2.5 85% -4 75.69 0.0
06 00:55 W 9 16.09 Overcast SCT017 OVC027 -0.3 -2.5 85% -3 75.69 0.0
06 00:35 NW 13 16.09 Overcast BKN019 OVC027 -0.2 -2.4 85% -4 75.69 0.0
06 00:15 NW 11 16.09 Overcast OVC019 -0.2 -2.1 87% -3 75.67 0.0
05 23:55 W 7 16.09 Overcast BKN014 OVC021 -0.3 -2 -0.3 -2.5 88% -3 75.67 0.0
05 23:35 W 6 16.09 Overcast OVC012 -0.5 -2 90% 75.67 0.0
05 23:15 W 6 11.27 Overcast OVC012 -0.5 -2.1 89% 75.67 0.0
05 22:55 W 7 11.27 Overcast OVC010 -0.6 -2.2 89% -3 75.64 0.0
05 22:35 W 9 11.27 Overcast OVC010 -0.7 -2.3 89% -4 75.64 0.0
05 22:15 W 7 16.09 Overcast OVC010 -1 -2.6 89% -3 75.64 0.0
05 21:55 W 7 16.09 Overcast OVC012 -1 -2.7 88% -3 75.62 0.0
05 21:35 W 7 16.09 Overcast OVC012 -1.1 -3 87% -3 75.62 0.0
05 21:15 W 7 16.09 Overcast OVC012 -1.4 -3.4 86% -4 75.59 0.0
05 20:55 W 7 16.09 Overcast OVC012 -1.5 -3.6 86% -4 75.59 0.0
05 20:35 W 9 16.09 Overcast OVC012 -1.5 -4 83% -4 75.57 0.0
05 20:15 W 7 16.09 Overcast OVC014 -1.5 -4.1 83% -4 75.57 0.0
05 19:55 Calm 16.09 Overcast OVC016 -1.7 -4.2 83% 75.57 0.0
05 19:35 Calm 16.09 Overcast OVC018 -2 -4.5 83% 75.57 0.0
05 19:15 Calm 16.09 Overcast SCT020 OVC025 -2 -4.5 83% 75.57 0.0
05 18:55 SW 6 16.09 Overcast OVC025 -2.1 -4.6 83% 75.57 0.0
05 18:35 SW 6 11.27 Light Snow OVC027 -2.3 -4.7 84% 75.57 0.0
05 18:15 Calm 4.02 Light Snow OVC029 -2.5 -4.8 84% 75.57 0.0
05 17:55 Calm 6.44 Light Snow SCT029 BKN033 OVC044 -2.2 -5.3 -1.6 -3.2 80% 75.57 0.0
05 17:35 SW 7 16.09 Overcast SCT035 OVC046 -2.3 -5.6 78% -5 75.54 0.0
05 17:15 SW 9 16.09 Overcast SCT033 BKN048 OVC050 -2.5 -5.6 80% -6 75.51 0.0
05 16:55 SW 11 11.27 Light Snow SCT023 SCT033 OVC050 -2.5 -5.6 80% -6 75.51 0.0
05 16:35 SW 7 11.27 Light Snow SCT022 BKN033 OVC050 -3 -5.5 83% -6 75.51 0.0
05 16:15 S 7 16.09 Overcast SCT019 BKN028 OVC050 -3.1 -5.1 86% -6 75.51 0.0
05 15:55 S 7 4.83 Light Snow SCT010 OVC017 -3.1 -5.1 86% -6 75.49 0.0
05 15:35 SW 9 4.83 Light Snow SCT007 BKN014 OVC021 -3 -5.5 83% -6 75.51 0.0
05 15:15 S 7 2.41 Light Snow SCT007 OVC014 -3 -5.7 82% -6 75.51 0.0
05 14:55 SW 15 6.44 Light Snow SCT014 BKN022 OVC036 -2.4 -6.8 72% -7 75.54 0.0
05 14:35 S 11 16.09 Overcast SCT026 BKN036 OVC042 -2.2 -7 70% -6 75.54 0.0
05 14:15 SW 11 16.09 Overcast SCT038 BKN048 OVC070 -2.1 -7.1 69% -6 75.57 0.0
05 13:55 SW 13 16.09 Overcast OVC070 -2 -7.1 68% -6 75.59 0.0
05 13:35 SW 17 16.09 Overcast SCT055 OVC075 -2 -7.4 67% -7 75.59 0.0
05 13:15 SW 17 16.09 Overcast BKN075 OVC085 -2 -7.6 66% -7 75.62 0.0
05 12:55 SW 20 G 26 16.09 Overcast SCT075 OVC085 -1.7 -7.6 64% -7 75.62 0.0
05 12:35 S 11 16.09 Overcast OVC080 -1.6 -8 62% -5 75.62 0.0
05 12:15 S 17 16.09 Overcast SCT080 OVC090 -2 -8.2 63% -7 75.62 0.0
05 11:55 S 13 16.09 Mostly Cloudy BKN090 -2.1 -8.5 -2.1 -6.9 62% -6 75.64 0.0
05 11:35 S 15 16.09 Overcast SCT075 OVC100 -2.5 -8.9 62% -7 75.67 0.0
05 11:15 S 11 16.09 Mostly Cloudy BKN110 -3 -9.3 62% -7 75.72 0.0
05 10:55 S 11 16.09 Fair CLR -3.7 -9.8 63% -8 75.74 0.0
05 10:35 S 15 16.09 Fair CLR -3.8 -10 62% -9 75.79 0.0
05 10:15 S 13 16.09 Fair CLR -4.1 -10.1 63% -9 75.79 0.0
05 09:55 S 13 16.09 Fair CLR -4.3 -10.3 63% -9 75.79 0.0
05 09:35 S 15 16.09 Fair CLR -4.9 -10.5 65% -10 75.82 0.0
05 09:15 S 13 16.09 Fair CLR -5.1 -10.6 66% -10 75.84 0.0
05 08:55 S 11 16.09 Partly Cloudy SCT060 -5.2 -10.5 67% -9 75.84 0.0
05 08:35 SW 11 16.09 Overcast OVC060 -5.1 -10.5 66% -9 75.84 0.0
05 08:15 S 7 16.09 Overcast OVC060 -5.4 -10.7 67% -8 75.82 0.0
05 07:55 Calm 16.09 Overcast OVC060 -6 -11 68% 75.84 0.0
05 07:35 S 6 16.09 Overcast OVC060 -6.1 -11.1 68% 75.87 0.0
05 07:15 S 9 16.09 Overcast OVC060 -6 -11.1 68% -10 75.87 0.0
05 06:55 S 7 16.09 Overcast OVC050 -6.1 -11.3 67% -9 75.87 0.0
05 06:35 S 6 16.09 Overcast OVC055 -6.3 -11.5 67% 75.9 0.0
05 06:15 S 7 16.09 Partly Cloudy SCT049 SCT055 -6.9 -11.9 68% -10 75.9 0.0
05 05:55 SW 9 16.09 Partly Cloudy SCT049 -6.6 -12 -6.5 -9.5 66% -10 75.92 0.0
05 05:35 S 9 16.09 Overcast OVC049 -6.5 -11.9 66% -10 75.92 0.0
05 05:15 S 9 16.09 Overcast OVC049 -6.5 -11.8 66% -10 75.97 0.0
05 04:55 S 7 16.09 Overcast OVC049 -6.6 -12 66% -10 75.97 0.0
05 04:35 S 7 16.09 Overcast OVC049 -6.7 -12.3 65% -10 76 0.0
05 04:15 S 7 16.09 Overcast SCT036 OVC047 -6.9 -12.5 65% -10 76.05 0.0
05 03:55 S 9 16.09 Overcast SCT038 OVC047 -7.1 -12.9 64% -11 76.05 0.0
05 03:35 S 9 16.09 Overcast SCT041 OVC047 -7.4 -13.4 63% -11 76.07 0.0
05 03:15 S 11 16.09 Overcast SCT041 OVC047 -7.6 -13.7 62% -12 76.1 0.0
05 02:55 S 11 16.09 Overcast OVC044 -7.7 -14.2 60% -12 76.12 0.0
05 02:35 S 13 16.09 Overcast OVC042 -8 -14.5 60% -13 76.12 0.0
05 02:15 S 7 16.09 Overcast OVC040 -8.2 -14.8 59% -12 76.15 0.0
05 01:55 S 19 16.09 Overcast OVC038 -8.4 -15 59% -15 76.17 0.0
05 01:35 S 7 16.09 Overcast OVC036 -8.5 -15.1 59% -12 76.2 0.0
05 01:15 S 9 16.09 Overcast BKN036 OVC046 -8.8 -15.1 61% -13 76.23 0.0
05 00:55 S 7 16.09 Partly Cloudy SCT046 -9.3 -15.6 61% -13 76.28 0.0
05 00:35 S 13 16.09 Mostly Cloudy BKN048 -9.5 -15.6 62% -15 76.3 0.0
05 00:15 S 15 16.09 Overcast OVC048 -9.3 -15.7 60% -15 76.33 0.0
04 23:55 S 13 16.09 Overcast SCT040 OVC050 -9.2 -15.8 -9.2 -14 59% -15 76.35 0.0
04 23:35 S 15 16.09 Overcast SCT032 OVC040 -9.2 -16 58% -15 76.35 0.0
04 23:15 S 19 16.09 Overcast BKN032 OVC040 -9.2 -16.1 58% -16 76.38 0.0
04 22:55 S 9 16.09 Overcast OVC032 -9.6 -16 60% -14 76.4 0.0
04 22:35 Calm 16.09 Overcast OVC030 -10.1 -16.1 62% 76.43 0.0
04 22:15 S 9 16.09 Overcast OVC030 -10.5 -16.4 62% -15 76.45 0.0
04 21:55 SE 9 16.09 Overcast OVC034 -11.3 -16.2 67% -16 76.45 0.0
04 21:35 SE 9 16.09 Overcast OVC036 -11.7 -16.7 67% -16 76.5 0.0
04 21:15 SE 11 16.09 Mostly Cloudy SCT036 BKN042 -12.5 -17.2 68% -18 76.5 0.0
04 20:55 SE 6 16.09 Partly Cloudy SCT043 -12.8 -17.7 67% 76.58 0.0
04 20:35 SE 7 16.09 Partly Cloudy SCT043 -13.5 -18.5 66% -18 76.61 0.0
04 20:15 E 9 16.09 Fair CLR -13.4 -18.8 64% -18 76.63 0.0
04 19:55 E 7 16.09 Fair CLR -13.6 -19.1 64% -18 76.63 0.0
04 19:35 E 11 16.09 Fair CLR -13.8 -19.5 62% -20 76.66 0.0
04 19:15 E 9 16.09 Fair CLR -13.7 -19.5 62% -19 76.68 0.0
04 18:55 E 9 16.09 Fair CLR -13.8 -19.2 64% -19 76.68 0.0
04 18:35 E 11 16.09 Fair CLR -13.5 -19.3 62% -19 76.73 0.0
04 18:15 SE 7 16.09 Fair CLR -13 -19.5 59% -17 76.73 0.0
04 17:55 SE 7 16.09 Fair CLR -11.9 -19.5 -9 -11.9 54% -16 76.76 0.0
04 17:35 Calm 16.09 Fair CLR -11.9 -19.6 53% 76.78 0.0
04 17:15 S 6 16.09 Fair CLR -11.5 -19.7 51% 76.81 0.0
04 16:55 S 6 16.09 Fair CLR -11.1 -19.7 49% 76.84 0.0
04 16:35 S 6 16.09 Fair CLR -10.7 -19.5 49% 76.84 0.0
04 16:15 Calm 16.09 Fair CLR -10.1 -19 49% 76.86 0.0
04 15:55 SW 11 16.09 Fair CLR -10.2 -19.2 48% -15 76.89 0.0
04 15:35 SW 11 16.09 Fair CLR -10 -19.5 46% -15 76.91 0.0
04 15:15 SW 13 16.09 Fair CLR -9.6 -20.1 42% -15 76.94 0.0
04 14:55 SW 13 16.09 Fair CLR -9.5 -21.1 39% -15 76.94 0.0
04 14:35 SW 11 16.09 Fair CLR -9 -19.8 42% -14 76.99 0.0
04 14:15 S 11 16.09 Fair CLR -9 -18.9 45% -14 77.01 0.0
04 13:55 SW 11 16.09 Fair CLR -9.3 -18.1 49% -14 77.06 0.0
04 13:35 SW 11 16.09 Fair CLR -9.5 -18 50% -15 77.06 0.0
04 13:15 S 7 16.09 Fair CLR -9.6 -18.3 49% -13 77.09 0.0
04 12:55 SE 6 16.09 Fair CLR -9.8 -18.3 50% 77.11 0.0
04 12:35 SE 9 16.09 Fair CLR -10.5 -19.9 46% -15 77.14 0.0
04 12:15 E 9 16.09 Fair CLR -10.5 -19.1 50% -15 77.19 0.0
04 11:55 SE 11 16.09 Fair CLR -10.5 -19 -10.5 -20.6 50% -16 77.19 0.0
04 11:35 SE 7 16.09 Fair CLR -11.1 -18.6 54% -15 77.24 0.0
04 11:15 Calm 16.09 Fair CLR -12.1 -17.3 66% 77.24 0.0
04 10:55 Calm 16.09 Fair CLR -12.7 -16.8 72% 77.27 0.0
04 10:35 Calm 16.09 Fair CLR -14 -17.3 76% 77.29 0.0
04 10:15 Calm 16.09 Fair CLR -13.7 -16.8 78% 77.32 0.0
04 09:55 Calm 16.09 Fair CLR -14.5 -17.2 80% 77.32 0.0
04 09:35 Calm 16.09 Fair CLR -16.2 -18.5 83% 77.32 0.0
04 09:15 Calm 16.09 Fair CLR -16.5 -19 81% 77.32 0.0
04 08:55 Calm 16.09 Fair CLR -17.1 -19.5 82% 77.32 0.0
04 08:35 Calm 16.09 Fair CLR -18.7 -21 82% 77.32 0.0
04 08:15 Calm 16.09 Fair CLR -19.5 -21.6 84% 77.32 0.0
04 07:55 E 7 16.09 Fair CLR -19.9 -21.9 84% -25 77.32 0.0
04 07:35 Calm 16.09 Fair CLR -20.2 -22.4 83% 77.32 0.0
04 07:15 Calm 16.09 Fair CLR -20.1 -22.2 83% 77.29 0.0
04 06:55 Calm 16.09 Fair CLR -20 -22 84% 77.32 0.0
04 06:35 Calm 16.09 Fair CLR -19.4 -21.4 84% 77.32 0.0
04 06:15 Calm 16.09 Fair CLR -18.3 -20.3 84% 77.32 0.0
04 05:55 Calm 16.09 Fair CLR -18.9 -20.8 -12.6 -19.4 85% 77.29 0.0
04 05:35 Calm 16.09 Fair CLR -18.7 -20.5 86% 77.27 0.0
04 05:15 Calm 16.09 Fair CLR -19 -21 84% 77.27 0.0
04 04:55 Calm 16.09 Fair CLR -18.4 -20.4 84% 77.27 0.0
04 04:35 Calm 16.09 Fair CLR -17.3 -19.9 80% 77.24 0.0
04 04:15 Calm 16.09 Fair CLR -17.1 -19.1 85% 77.24 0.0
04 03:55 Calm 16.09 Fair CLR -16.2 -19.1 79% 77.24 0.0
04 03:35 Calm 16.09 Fair CLR -15.7 -18.2 81% 77.24 0.0
04 03:15 Calm 16.09 Fair CLR -15.9 -19.1 77% 77.24 0.0
04 02:55 NW 9 16.09 Fair CLR -14.7 -18.8 71% -20 77.24 0.0
04 02:35 NW 11 16.09 Fair CLR -14.3 -18.5 71% -20 77.24 0.0
04 02:15 NW 9 16.09 Fair CLR -14 -18.2 71% -19 77.22 0.0
04 02:00 NW 9 16.09 Fair CLR -13.9 -18.1 71% -19 77.19 0.0
04 01:35 NW 11 16.09 Fair CLR -13.6 -17.6 72% -19 77.19 0.0
04 01:15 NW 13 16.09 Fair CLR -13.1 -17.4 70% -19 77.17 0.0
04 00:55 NW 15 16.09 Fair CLR -13 -17.1 72% -20 77.17 0.0
04 00:35 NW 15 16.09 Fair CLR -12.7 -16.8 72% -19 77.14 0.0
04 00:15 NW 11 16.09 Fair CLR -13 -16.7 74% -19 77.14 0.0
03 23:55 NW 13 16.09 Fair CLR -12.8 -16.4 -7.1 -13 75% -19 77.11 0.0
03 23:35 NW 11 16.09 Fair CLR -12.8 -16.4 75% -18 77.09 0.0
03 23:15 NW 11 16.09 Fair CLR -11.6 -15.5 73% -17 77.04 0.0
03 22:55 NW 11 16.09 Fair CLR -11.2 -15.3 72% -17 77.04 0.0
03 22:35 NW 17 16.09 Fair CLR -11 -15.2 71% -18 77.04 0.0
03 22:15 NW 13 16.09 Fair CLR -10.7 -14.8 72% -17 77.04 0.0
03 21:55 NW 11 16.09 Fair CLR -10.5 -14.6 72% -16 77.01 0.0
03 21:35 NW 11 16.09 Fair CLR -10.1 -14.5 71% -15 76.99 0.0
03 21:15 NW 15 16.09 Fair CLR -9.8 -14.1 71% -16 76.96 0.0
03 20:55 NW 9 16.09 Fair CLR -10 -13.9 73% -14 76.94 0.0
03 20:35 NW 9 16.09 Fair CLR -9.9 -13.7 74% -14 76.91 0.0
Date Time (cst) 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)