Weather observations for the past three days for
Viroqua 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.
13 13:55 W 24 G 39 16.09 Partly Cloudy SCT034 8.5 1.5 62% 5 74.9 0.0
13 13:35 W 31 G 39 16.09 Fair CLR 8.3 1.4 62% 5 74.9 0.0
13 13:15 W 22 G 35 16.09 Fair CLR 8.6 1.6 62% 6 74.93 0.0
13 12:55 W 28 G 33 16.09 Fair CLR 8.5 1.7 63% 5 74.93 0.0
13 12:35 W 19 G 35 16.09 Partly Cloudy SCT110 8.5 1.8 63% 6 74.96 0.0
13 12:15 W 24 G 37 16.09 Fair CLR 8.1 1.7 64% 5 74.98 0.0
13 11:55 W 22 G 31 16.09 Fair CLR 8 2.1 8 3.3 67% 5 74.98 0.0
13 11:35 W 30 G 35 16.09 Partly Cloudy SCT095 7.8 2.4 69% 4 74.98 0.0
13 11:15 W 24 16.09 Partly Cloudy SCT095 7 1.8 70% 4 75.03 0.0
13 11:00 W 24 G 31 16.09 Partly Cloudy SCT095 7 1.8 70% 4 75.03 0.0
13 10:35 W 28 16.09 Fair CLR 6.1 1.5 73% 2 75.06 0.0
13 10:15 W 22 16.09 Fair CLR 5.6 1.6 76% 2 75.06 0.0
13 09:55 W 24 16.09 Fair CLR 4.8 1.5 79% 1 75.06 0.0
13 09:35 W 20 16.09 Fair CLR 4.6 1.2 79% 1 75.06 0.0
13 09:15 W 17 16.09 Fair CLR 4.2 0.9 79% 1 75.06 0.0
13 08:55 W 24 16.09 Fair CLR 4.1 0.6 78% -0 75.06 0.0
13 08:35 W 19 16.09 Fair CLR 4 0.5 78% 0 75.08 0.0
13 08:15 W 19 16.09 Fair CLR 3.5 0.1 79% -0 75.08 0.0
13 07:55 W 19 16.09 Fair CLR 3.6 0 78% -0 75.06 0.0
13 07:35 W 20 G 30 16.09 Fair CLR 3.7 0 77% -0 75.08 0.0
13 07:15 W 20 16.09 Fair CLR 3.8 0 77% -0 75.08 0.0
13 06:55 W 19 G 31 16.09 Fair CLR 4 -0.2 74% 0 75.08 0.0
13 06:35 W 20 16.09 Fair CLR 4 -0.5 73% 0 75.08 0.0
13 06:15 W 19 16.09 Fair CLR 4 -0.5 73% 0 75.08 0.0
13 05:55 W 26 G 37 16.09 Partly Cloudy SCT085 4.2 -0.5 4.6 2.4 72% -0 75.08 0.0
13 05:35 W 24 16.09 Mostly Cloudy SCT080 BKN095 4.5 -0.5 70% 0 75.08 0.0
13 05:15 SW 20 16.09 Overcast OVC080 4.1 -0.6 72% 0 75.11 0.0
13 04:55 SW 20 16.09 Overcast OVC080 3.7 -0.5 74% -0 75.08 0.0
13 04:15 SW 19 16.09 Overcast SCT090 OVC110 3.1 -0.5 78% -1 75.13 0.0
13 03:55 SW 17 16.09 Overcast SCT070 SCT090 OVC110 3 -0.5 78% -1 75.18 0.0
13 03:35 SW 19 16.09 Mostly Cloudy SCT055 SCT070 BKN100 3 -0.3 79% -1 75.23 0.0
13 03:15 S 20 G 26 16.09 Overcast SCT055 OVC070 3 -0.3 79% -1 75.29 0.0
13 02:55 SW 13 16.09 Mostly Cloudy BKN070 BKN090 2.8 -0.2 81% -0 75.36 0.0
13 02:35 SW 15 16.09 Mostly Cloudy BKN110 2.6 -0.1 83% -1 75.39 0.0
13 02:15 SW 13 16.09 Mostly Cloudy BKN110 2.6 0 83% -0 75.44 0.0
13 01:55 SW 13 16.09 Partly Cloudy SCT120 2.7 0 83% -0 75.46 0.0
13 01:35 S 15 16.09 Fair CLR 2.8 0 82% -1 75.51 0.0
13 01:15 SW 15 16.09 Fair CLR 2.7 0 83% -1 75.54 0.0
13 00:55 SW 15 16.09 Fair CLR 2.7 0 83% -1 75.62 0.0
13 00:35 SW 20 16.09 Fair CLR 2.6 0.1 84% -2 75.67 0.0
13 00:15 S 17 16.09 Fair CLR 2.7 0.3 84% -1 75.69 0.0
12 23:55 S 13 16.09 Fair CLR 2.3 0.4 3 1.2 87% -1 75.72 0.0
12 23:35 S 15 16.09 Fair CLR 2.3 0.4 87% -1 75.77 0.0
12 23:15 S 17 16.09 Fair CLR 1.7 0.1 89% -2 75.79 0.0
12 22:55 S 11 16.09 Fair CLR 1.9 0.2 89% -1 75.82 0.0
12 22:35 S 11 16.09 Fair CLR 1.7 0.1 89% -1 75.82 0.0
12 22:15 S 11 16.09 Fair CLR 1.8 0.1 89% -1 75.84 0.0
12 21:55 S 7 16.09 Fair CLR 2 0.1 87% 0 75.92 0.0
12 21:35 S 13 16.09 Fair CLR 2 0.1 87% -1 75.97 0.0
12 21:15 SW 15 16.09 Fair CLR 2 0.1 87% -2 76 0.0
12 20:55 SW 15 16.09 Fair CLR 1.8 0.1 89% -2 76.02 0.0
12 20:35 SW 11 16.09 Fair CLR 1.5 -0.1 89% -1 76.02 0.0
12 20:15 S 6 16.09 Fair CLR 2 0 87% 76.02 0.0
12 19:55 S 7 16.09 Fair CLR 1.9 -0.1 87% 0 76.05 0.0
12 19:35 S 6 16.09 Fair CLR 2.1 0 86% 76.07 0.0
12 19:15 SW 9 16.09 Fair CLR 2 0 87% -0 76.07 0.0
12 18:55 SW 9 16.09 Fair CLR 2 0 87% -0 76.1 0.0
12 18:35 W 11 16.09 Fair CLR 2.3 0 85% -0 76.12 0.0
12 18:15 SW 13 16.09 Fair CLR 3 0 81% 0 76.1 0.0
12 17:55 SW 13 16.09 Fair CLR 2.9 0.1 6.5 2.3 82% -0 76.07 0.0
12 17:35 SW 17 16.09 Fair CLR 3.5 0.2 79% 0 76.1 0.0
12 17:15 SW 13 16.09 Fair CLR 3.2 0.1 80% 0 76.1 0.0
12 16:55 SW 11 16.09 Fair CLR 4 0.1 76% 2 76.1 0.0
12 16:35 SW 13 16.09 Fair CLR 4.9 0.3 72% 2 76.1 0.0
12 16:15 SW 13 16.09 Fair CLR 5.6 0.4 70% 3 76.1 0.0
12 15:55 SW 13 16.09 Fair CLR 6.1 0.3 67% 4 76.1 0.0
12 15:35 SW 15 16.09 Fair CLR 6.5 0.2 64% 4 76.15 0.0
12 15:15 SW 11 16.09 Fair CLR 6.5 0.6 66% 5 76.15 0.0
12 14:55 SW 15 16.09 Fair CLR 6.3 0.4 66% 4 76.17 0.0
12 14:35 W 15 16.09 Fair CLR 6.1 0.6 68% 3 76.2 0.0
12 14:15 W 17 16.09 Fair CLR 6 0.4 68% 3 76.23 0.0
12 14:00 W 17 16.09 Fair CLR 5.6 0.2 69% 3 76.23 0.0
12 13:35 SW 15 16.09 Fair CLR 5.1 0 70% 2 76.25 0.0
12 13:15 W 17 16.09 Fair CLR 4.7 -0.2 71% 1 76.28 0.0
12 12:55 SW 11 16.09 Fair CLR 4 -0.5 73% 2 76.3 0.0
12 12:35 W 13 16.09 Fair CLR 3.6 -0.9 73% 1 76.3 0.0
12 12:15 W 13 16.09 Fair CLR 3.1 -1 75% 0 76.33 0.0
12 11:55 SW 13 16.09 Fair CLR 2 -1.4 2.1 -4 78% -1 76.33 0.0
12 11:15 W 13 16.09 Fair CLR 1.2 -1.7 81% -2 76.38 0.0
12 10:55 W 13 16.09 Fair CLR 0.5 -2 84% -3 76.4 0.0
12 10:40 W 11 16.09 Fair CLR 0.1 -2.1 85% -3 76.38 0.0
12 10:15 SW 13 16.09 Fair CLR -0.5 -2.5 87% -4 76.38 0.0
12 09:55 W 15 16.09 Fair CLR -1 -2.6 89% -5 76.38 0.0
12 09:35 SW 11 16.09 Fair CLR -1.4 -3 89% -5 76.35 0.0
12 09:15 SW 13 16.09 Fair CLR -1.7 -3.2 90% -6 76.35 0.0
12 08:55 SW 11 16.09 Fair CLR -2.6 -3.7 92% -6 76.33 0.0
12 08:35 SW 13 16.09 Fair CLR -3.7 -4.4 95% -8 76.3 0.0
12 08:15 SW 11 16.09 Fair CLR -3.7 -4.6 94% -8 76.3 0.0
12 07:55 SW 11 16.09 Fair CLR -3.3 -4.2 94% -7 76.3 0.0
12 07:35 SW 11 16.09 Fair CLR -2.7 -4 91% -6 76.28 0.0
12 07:15 SW 15 16.09 Fair CLR -2.8 -3.9 92% -7 76.28 0.0
12 06:55 SW 15 16.09 Fair CLR -3 -4 93% -8 76.28 0.0
12 06:35 SW 15 16.09 Fair CLR -3 -4.2 92% -8 76.3 0.0
12 06:15 W 17 16.09 Fair CLR -3 -4.2 92% -8 76.3 0.0
12 05:55 W 13 16.09 Fair CLR -3.3 -4.5 -3.2 -3.8 92% -8 76.3 0.0
12 05:35 W 15 16.09 Fair CLR -3.2 -4.5 91% -8 76.3 0.0
12 05:15 W 15 16.09 Fair CLR -3.2 -4.7 90% -8 76.3 0.0
12 04:55 W 15 16.09 Fair CLR -3.3 -4.9 89% -8 76.3 0.0
12 04:35 W 13 16.09 Fair CLR -3.4 -5 89% -8 76.3 0.0
12 04:15 W 13 16.09 Fair CLR -3.2 -5 88% -7 76.3 0.0
12 03:55 SW 13 16.09 Fair CLR -3.5 -5.3 88% -8 76.3 0.0
12 03:35 SW 15 16.09 Fair CLR -3.6 -5.6 86% -8 76.33 0.0
12 03:15 SW 15 16.09 Fair CLR -3.3 -5.6 84% -8 76.33 0.0
12 02:55 SW 13 16.09 Fair CLR -3.5 -5.8 84% -8 76.35 0.0
12 02:35 SW 15 16.09 Fair CLR -3.5 -6 83% -8 76.38 0.0
12 02:15 W 11 16.09 Fair CLR -3.3 -6 82% -7 76.38 0.0
12 01:55 SW 13 16.09 Fair CLR -3.5 -6.2 82% -8 76.38 0.0
12 01:35 SW 15 16.09 Fair CLR -3.3 -6.2 81% -8 76.38 0.0
12 01:15 SW 19 16.09 Fair CLR -3.5 -6.5 80% -9 76.38 0.0
12 00:55 SW 15 16.09 Fair CLR -3.5 -6.6 79% -8 76.38 0.0
12 00:35 SW 15 16.09 Fair CLR -3.6 -6.7 79% -8 76.4 0.0
12 00:15 SW 13 16.09 Fair CLR -3.8 -6.6 81% -8 76.43 0.0
11 23:55 SW 13 16.09 Fair CLR -3.9 -6.5 -3.8 -4.6 82% -8 76.45 0.0
11 23:35 SW 13 16.09 Fair CLR -4.3 -6.5 85% -9 76.45 0.0
11 23:15 SW 17 16.09 Fair CLR -4.2 -6.2 86% -9 76.48 0.0
11 22:55 SW 19 16.09 Fair CLR -4.2 -6 87% -10 76.53 0.0
11 22:35 SW 19 16.09 Fair CLR -4.5 -5.8 91% -10 76.53 0.0
11 22:15 SW 19 16.09 Fair CLR -4.3 -5.6 91% -10 76.58 0.0
11 21:55 SW 17 16.09 Fair CLR -4.5 -5.6 92% -10 76.58 0.0
11 21:35 SW 17 16.09 Fair CLR -4.5 -5.6 92% -10 76.61 0.0
11 21:15 SW 19 16.09 Fair CLR -4.5 -5.5 93% -10 76.61 0.0
11 20:55 SW 20 G 26 16.09 Fair CLR -4.3 -5.5 91% -10 76.63 0.0
11 20:35 SW 19 16.09 Partly Cloudy SCT075 -4.3 -5.5 91% -10 76.66 0.0
11 20:15 SW 17 G 26 16.09 Partly Cloudy SCT075 SCT100 -4.1 -5.5 90% -9 76.73 0.0
11 19:55 SW 20 G 26 16.09 Partly Cloudy SCT110 -4 -5.5 89% -10 76.73 0.0
11 19:35 SW 19 16.09 Mostly Cloudy BKN110 -3.8 -5.2 90% -9 76.73 0.0
11 19:15 SW 17 16.09 Partly Cloudy SCT090 SCT110 -4 -5.5 89% -9 76.76 0.0
11 18:55 S 17 16.09 Fair CLR -4.1 -5.6 89% -9 76.76 0.0
11 18:35 SW 19 16.09 Fair CLR -4.2 -5.7 89% -10 76.78 0.0
11 18:15 S 20 16.09 Fair CLR -4.1 -6 87% -10 76.81 0.0
11 17:55 SW 13 16.09 Fair CLR -4.2 -6 -3.5 -5.5 87% -9 76.86 0.0
11 17:35 SW 15 16.09 Fair CLR -4.1 -6.1 86% -9 76.86 0.0
11 17:15 SW 13 16.09 Fair CLR -4.1 -6 87% -9 76.86 0.0
11 16:55 SW 15 16.09 Fair CLR -4.1 -6.2 86% -9 76.86 0.0
11 16:35 SW 17 16.09 Fair CLR -4.1 -6.3 85% -9 76.91 0.0
11 16:15 NW 19 16.09 Fair CLR -3.9 -6.2 84% -9 76.91 0.0
11 15:55 SW 19 16.09 Partly Cloudy SCT016 -3.6 -6.1 83% -9 76.91 0.0
11 15:35 SW 11 16.09 Fair CLR -4 -6.5 83% -8 76.91 0.0
11 15:15 SW 19 16.09 Fair CLR -3.6 -6.3 82% -9 76.91 0.0
11 14:55 SW 15 16.09 Fair CLR -3.8 -6.3 83% -9 76.94 0.0
11 14:35 SW 15 16.09 Partly Cloudy SCT015 -4 -6.3 84% -9 76.94 0.0
11 14:15 SW 13 16.09 Fair CLR -3.8 -6.2 84% -8 76.94 0.0
11 13:55 SW 13 16.09 Partly Cloudy SCT012 -4.1 -6.4 84% -9 76.96 0.0
11 13:35 SW 13 16.09 Partly Cloudy SCT010 -4.6 -6.5 87% -9 76.96 0.0
11 13:15 SW 15 16.09 Mostly Cloudy BKN010 -5 -6.8 87% -10 76.99 0.0
11 12:55 W 15 16.09 Overcast OVC010 -5 -6.8 87% -10 77.01 0.0
11 12:35 W 15 16.09 Overcast OVC010 -5.3 -6.9 89% -10 77.06 0.0
11 12:15 W 17 16.09 Overcast OVC010 -5.5 -7 89% -11 77.06 0.0
11 11:55 W 15 16.09 Overcast OVC010 -5.5 -6.9 -4.7 -5.5 90% -11 77.09 0.0
11 11:35 W 17 16.09 Overcast OVC010 -5.5 -7 89% -11 77.09 0.0
11 11:15 SW 13 16.09 Overcast OVC012 -5.4 -7 89% -10 77.06 0.0
11 10:55 W 15 16.09 Overcast OVC012 -5.1 -6.7 89% -10 77.09 0.0
11 10:35 W 11 16.09 Overcast OVC012 -5.1 -6.7 89% -9 77.14 0.0
11 10:15 NW 11 16.09 Overcast OVC012 -5 -6.7 88% -9 77.09 0.0
11 09:55 NW 17 16.09 Overcast OVC012 -5.3 -7 88% -11 77.06 0.0
11 09:35 NW 20 16.09 Overcast OVC012 -5.5 -7 89% -12 77.01 0.0
11 09:15 NW 17 16.09 Overcast OVC012 -5.3 -7 88% -11 77.01 0.0
11 08:55 NW 15 16.09 Overcast OVC012 -5.4 -6.8 90% -11 76.99 0.0
11 08:35 NW 17 16.09 Overcast OVC012 -5.4 -6.8 90% -11 77.01 0.0
11 08:15 NW 20 16.09 Overcast OVC012 -5.2 -6.7 89% -11 77.04 0.0
11 07:55 NW 20 G 28 16.09 Overcast OVC012 -5.2 -6.7 89% -11 76.99 0.0
11 07:35 NW 19 G 30 16.09 Overcast OVC012 -5.1 -6.7 89% -11 76.96 0.0
11 07:15 NW 20 16.09 Overcast OVC012 -5.1 -6.6 89% -11 76.94 0.0
11 06:55 NW 28 G 33 16.09 Overcast OVC012 -5 -6.5 89% -12 76.89 0.0
11 06:35 NW 26 G 39 16.09 Overcast OVC014 -5 -6.5 89% -12 76.86 0.0
11 06:15 NW 26 G 37 16.09 Overcast OVC014 -4.8 -6.5 88% -12 76.84 0.0
11 05:55 NW 26 G 37 16.09 Overcast OVC014 -4.7 -6.3 -4.6 -7.3 89% -12 76.84 0.0
11 05:35 NW 30 G 39 16.09 Overcast OVC014 -4.6 -6.5 87% -12 76.81 0.0
11 05:15 NW 28 G 39 16.09 Overcast OVC014 -4.7 -6.5 87% -12 76.76 0.0
11 04:55 NW 28 16.09 Overcast OVC014 -4.8 -6.5 88% -12 76.73 0.0
11 04:35 NW 30 G 35 16.09 Overcast OVC014 -5 -6.6 89% -12 76.71 0.0
11 04:15 NW 24 16.09 Overcast OVC014 -5 -6.7 88% -12 76.71 0.0
11 03:35 NW 28 16.09 Overcast OVC014 -5.2 -7 87% -12 76.63 0.0
11 03:15 NW 24 G 43 16.09 Overcast OVC014 -5.3 -7.1 87% -12 76.61 0.0
11 02:55 NW 24 G 33 16.09 Overcast OVC016 -5.6 -7.3 88% -12 76.58 0.0
11 02:35 NW 24 16.09 Overcast OVC016 -5.7 -7.5 87% -13 76.58 0.0
11 02:15 NW 24 G 37 16.09 Overcast OVC016 -5.9 -7.8 87% -13 76.53 0.0
11 01:55 NW 20 G 33 16.09 Overcast OVC016 -6.1 -8.1 86% -12 76.5 0.0
11 01:35 NW 24 G 31 16.09 Overcast OVC018 -6.2 -8.5 84% -13 76.48 0.0
11 01:15 NW 20 G 39 16.09 Overcast OVC018 -6.5 -8.7 85% -13 76.45 0.0
11 00:55 NW 26 G 41 16.09 Overcast OVC022 -6.7 -9 84% -14 76.43 0.0
11 00:35 NW 22 G 33 16.09 Overcast BKN024 OVC030 -7 -9.3 84% -14 76.43 0.0
11 00:15 NW 20 G 30 16.09 Overcast SCT023 OVC030 -7.1 -9.3 85% -14 76.4 0.0
10 23:55 NW 24 G 35 16.09 Overcast SCT017 SCT023 OVC032 -7.4 -9 -6.8 -7.8 88% -15 76.4 0.0
10 23:35 NW 22 G 31 8.05 Overcast OVC017 -7.5 -9 89% -15 76.38 0.0
10 23:15 NW 19 4.02 Overcast OVC015 -7.6 -9 90% -14 76.38 0.0
10 22:55 NW 24 2.82 Overcast OVC013 -7.8 -8.7 93% -15 76.35 0.0
10 22:35 NW 20 G 28 2.82 Overcast OVC013 -7.8 -8.7 93% -15 76.33 0.0
10 22:15 NW 17 2.82 Overcast OVC015 -7.7 -8.8 92% -14 76.33 0.0
10 21:55 NW 20 G 30 3.22 Overcast OVC015 -7.7 -9 91% -14 76.3 0.0
10 21:35 NW 19 4.83 Overcast BKN014 OVC020 -7.7 -8.7 93% -14 76.3 0.0
10 21:15 NW 19 4.83 Overcast SCT010 BKN015 OVC034 -7.7 -8.8 92% -14 76.3 0.0
10 20:55 NW 19 1.61 Overcast SCT003 OVC012 -7.6 -8.5 93% -14 76.28 0.0
10 20:35 NW 15 6.44 Overcast OVC016 -7.5 -9 89% -13 76.28 0.0
10 20:15 NW 20 G 31 3.22 Overcast OVC016 -7.5 -8.9 90% -14 76.28 0.0
10 19:55 NW 24 G 33 6.44 Overcast BKN020 OVC028 -7.3 -9.2 86% -15 76.25 0.0
10 19:35 NW 30 G 39 8.05 Overcast SCT016 BKN023 OVC034 -7.3 -9.6 84% -15 76.25 0.0
10 19:15 NW 24 G 31 4.83 Overcast BKN018 OVC027 -7.3 -9.3 86% -15 76.23 0.0
10 18:55 NW 30 G 37 8.05 Overcast BKN020 BKN024 OVC033 -7.3 -9.6 84% -15 76.23 0.0
10 18:35 NW 31 G 44 6.44 Overcast BKN019 OVC027 -7.2 -10 81% -15 76.2 0.0
10 18:15 NW 28 G 37 11.27 Overcast SCT021 BKN028 OVC033 -7 -10.1 79% -15 76.17 0.0
10 17:55 NW 24 G 39 16.09 Overcast SCT024 OVC030 -6.7 -10.4 -1.5 -6.7 75% -14 76.15 0.0
10 17:35 NW 33 G 39 16.09 Overcast and Breezy OVC026 -6.7 -10.1 77% -15 76.15 0.0
10 17:15 NW 31 G 43 16.09 Overcast OVC026 -6.3 -10.2 74% -14 76.12 0.0
10 16:55 NW 33 G 52 16.09 Overcast and Breezy SCT017 OVC024 -5.8 -9.9 73% -14 76.1 0.0
10 16:35 NW 35 G 44 16.09 Overcast and Breezy BKN019 OVC024 -4.6 -7.5 80% -13 76.07 0.0
10 16:15 W 30 G 39 6.44 Overcast SCT021 BKN029 OVC037 -3.7 -6.9 79% -11 76.02 0.0
10 15:55 W 20 G 39 16.09 Overcast SCT029 OVC036 -3 -8.3 67% -9 76 0.0
10 15:35 W 24 G 35 16.09 Overcast BKN039 OVC080 -2.6 -8.8 63% -9 75.97 0.0
10 15:15 W 31 G 46 16.09 Partly Cloudy SCT041 SCT080 -2 -9.5 57% -9 75.97 0.0
10 14:55 W 33 G 44 16.09 Fair and Breezy CLR -1.8 -9.7 55% -9 75.97 0.0
10 14:35 W 20 G 39 16.09 Fair CLR -1.8 -9.6 56% -7 75.97 0.0
10 14:15 W 22 G 39 16.09 Fair CLR -1.7 -8.6 60% -7 75.97 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)