Weather observations for the past three days for
Rantoul National Aviation Center 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.
14 09:35 E 9 6.44 Fog/Mist OVC004 22 21.8 99% 76.48 0.0
14 09:15 E 6 6.44 Fog/Mist OVC004 21.6 21.5 99% 76.45 0.0
14 08:55 E 9 4.83 Fog/Mist OVC004 21.5 21.2 98% 76.45 0.0
14 08:35 E 6 4.83 Fog/Mist OVC002 21.2 21 99% 76.45 0.0
14 08:15 NE 7 4.02 Fog/Mist OVC002 21.3 21.1 99% 76.43 0.0
14 07:55 Calm 0.40 Light Drizzle OVC002 21.1 21 99% 76.43 0.0
14 07:35 Calm 0.40 Drizzle OVC002 20.7 20.5 99% 76.4 0.0
14 07:15 Calm 0.40 Light Drizzle OVC002 20.4 20.2 99% 76.4 0.0
14 06:55 Calm 0.24 Light Drizzle OVC002 20.3 20.1 21.4 19.2 99% 76.38 0.0
14 06:35 Calm 0.24 Fog OVC002 20 19.8 99% 76.38 0.0
14 06:15 Calm 0.24 Light Rain OVC002 20.1 20 99% 76.35 0.0
14 05:55 Calm 0.40 Fog OVC002 20.1 19.9 99% 76.35 0.0
14 05:35 Calm 0.80 Fog OVC002 19.4 19.2 99% 76.35 0.0
14 05:15 Calm 4.02 Fog/Mist BKN002 19.5 19.3 99% 76.35 0.0
14 04:55 Calm 1.61 Fog/Mist OVC002 20.1 19.9 99% 76.35 0.0
14 04:35 Calm 1.21 Fog/Mist OVC002 20.1 20 99% 76.35 0.0
14 04:15 Calm 4.02 Fog/Mist BKN002 20.2 20 99% 76.33 0.0
14 03:55 Calm 0.40 Fog OVC002 20.2 20 99% 76.33 0.0
14 03:35 Calm 0.40 Fog OVC002 20.3 20.1 99% 76.33 0.0
14 03:15 NW 6 0.40 Fog OVC002 20.7 20.5 99% 76.33 0.0
14 02:55 W 6 4.83 Fog/Mist CLR 20.5 20.2 98% 76.35 0.0
14 02:35 Calm 4.83 Fog/Mist SCT065 20.8 20.6 99% 76.35 0.0
14 02:15 Calm 3.22 Fog/Mist OVC065 21 20.7 98% 76.35 0.0
14 01:55 Calm 4.83 Fog/Mist OVC065 21.1 21 99% 76.35 0.0
14 01:35 Calm 2.41 Fog/Mist SCT002 BKN033 OVC065 21.1 21 99% 76.35 0.0
14 01:15 Calm 0.80 Fog OVC002 21.2 21 99% 76.35 0.0
14 00:55 Calm 2.41 Fog/Mist BKN002 OVC024 21.5 21.2 23.6 21.4 98% 76.35 0.0
14 00:35 Calm 2.82 Fog/Mist OVC002 21.5 21.2 98% 76.35 0.0
14 00:15 S 6 0.80 Fog OVC002 21.6 21.5 99% 76.38 0.0
13 23:55 Calm 0.80 Fog OVC002 21.6 21.5 99% 76.38 0.0
13 23:35 S 9 0.80 Fog OVC002 21.7 21.5 99% 76.38 0.0
13 23:15 S 6 3.22 Fog/Mist OVC002 21.7 21.5 99% 76.38 0.0
13 22:55 S 6 6.44 Fog/Mist OVC002 21.9 21.6 98% 76.35 0.0
13 22:35 Calm 2.82 Fog/Mist OVC002 21.8 21.5 98% 76.33 0.0
13 22:15 SE 9 8.05 Fog/Mist OVC002 22 21.7 98% 76.33 0.0
13 21:55 SE 6 8.05 Fog/Mist OVC002 22 21.7 98% 76.3 0.0
13 21:35 S 6 4.83 Fog/Mist BKN002 OVC011 22 21.7 98% 76.3 0.0
13 21:15 Calm 4.83 Fog/Mist BKN002 BKN007 BKN011 22.1 21.9 99% 76.28 0.0
13 20:55 Calm 8.05 Fog/Mist SCT002 22.5 22.2 98% 76.23 0.0
13 20:35 SE 6 11.27 Partly Cloudy SCT007 22.8 22.5 98% 76.23 0.0
13 20:15 Calm 16.09 Mostly Cloudy BKN007 BKN010 23.2 22.7 97% 76.23 0.0
13 19:55 Calm 16.09 Mostly Cloudy BKN007 23.2 22.7 97% 76.23 0.0
13 19:35 Calm 16.09 Partly Cloudy SCT100 23.5 22.9 96% 76.25 0.0
13 19:15 Calm 16.09 Partly Cloudy SCT100 23.5 22.7 95% 76.25 0.0
13 18:55 Calm 16.09 Partly Cloudy SCT100 23.5 22.7 26.5 23.1 95% 76.23 0.0 0.28
13 18:35 Calm 16.09 Mostly Cloudy BKN100 23.6 22.6 94% 76.23 0.0
13 18:15 Calm 16.09 Mostly Cloudy BKN100 23.7 22.7 94% 76.23 0.0
13 17:55 Calm 16.09 Partly Cloudy SCT100 23.6 22.5 94% 76.23 0.0
13 17:35 S 6 16.09 Fair CLR 23.6 22.7 95% 76.23 0.0
13 17:15 SW 6 16.09 Mostly Cloudy SCT013 BKN021 23.4 22.5 95% 76.23 0.0
13 16:55 SW 6 16.09 Overcast BKN015 OVC019 23.2 22.5 96% 76.25 0.0
13 16:35 SW 6 16.09 Light Drizzle SCT009 BKN014 OVC040 23.1 22 94% 76.28 0.0
13 16:15 S 7 11.27 Light Rain SCT014 BKN019 BKN038 24.3 22.8 91% 24 76.28 0.0
13 15:55 SW 6 11.27 Partly Cloudy SCT019 24.1 22.5 91% 24 76.28 0.0 0.03 0.28
13 15:35 Calm 11.27 Light Rain SCT034 SCT043 SCT055 24 22.5 91% 23 76.28 0.0 0.03
13 15:15 Calm 8.05 Light Rain SCT029 BKN049 OVC060 24 23 94% 23 76.3 0.0 0.03
13 14:55 W 6 8.05 Rain BKN050 OVC065 23.9 22.8 94% 23 76.3 0.0 0.23
13 14:35 W 9 6.44 Rain SCT037 OVC050 24 23.1 95% 23 76.33 0.0 0.18
13 14:15 W 6 6.44 Rain SCT035 BKN042 OVC048 24.2 23 93% 24 76.33 0.0 0.05
13 13:55 NW 6 8.05 Rain BKN046 BKN055 OVC065 24.7 22.6 88% 25 76.33 0.0 0.03
13 13:35 Calm 16.09 Light Rain SCT048 SCT065 BKN100 25.4 21.9 81% 27 76.35 0.0
13 13:15 Calm 16.09 Mostly Cloudy BKN120 26 21.6 77% 28 76.33 0.0
13 12:55 Calm 16.09 Partly Cloudy SCT120 26.3 21.5 26.4 21.6 75% 28 76.33 0.0
13 12:35 S 6 16.09 Fair CLR 26 21.1 74% 27 76.33 0.0
13 12:15 Calm 16.09 Partly Cloudy SCT120 25.7 20.5 73% 27 76.35 0.0
13 11:35 SE 7 16.09 Fair CLR 26 20.5 72% 27 76.35 0.0
13 11:15 SE 7 16.09 Fair CLR 25.5 19.4 69% 27 76.35 0.0
13 10:55 S 6 16.09 Partly Cloudy SCT080 26 19.5 67% 27 76.35 0.0
13 10:35 Calm 16.09 Partly Cloudy SCT070 25.6 19.1 67% 27 76.35 0.0
13 10:15 SE 6 16.09 Mostly Cloudy BKN070 25.3 19 68% 26 76.35 0.0
13 09:55 E 6 16.09 Fair CLR 25.2 18.8 68% 26 76.35 0.0
13 09:35 E 7 16.09 Partly Cloudy SCT075 24.8 18.8 69% 26 76.33 0.0
13 09:15 NE 9 16.09 Partly Cloudy SCT075 24.5 18.8 71% 25 76.33 0.0
13 08:55 NE 11 16.09 Partly Cloudy SCT075 24.9 18.4 67% 26 76.35 0.0
13 08:35 NE 11 16.09 Partly Cloudy SCT065 24 19.3 75% 25 76.35 0.0
13 08:15 NE 9 16.09 Mostly Cloudy BKN065 23.3 18.8 76% 76.33 0.0
13 07:55 N 13 16.09 Partly Cloudy SCT065 23.2 18.8 76% 76.33 0.0
13 07:35 N 11 16.09 Partly Cloudy SCT050 22.6 19.5 83% 76.33 0.0
13 07:15 N 9 16.09 Partly Cloudy SCT050 22 20 88% 76.3 0.0
13 06:55 N 9 11.27 Partly Cloudy SCT050 21.6 20.3 21.9 20.2 92% 76.3 0.0
13 06:35 NW 9 11.27 Partly Cloudy SCT050 21.7 20.6 94% 76.3 0.0
13 06:15 N 6 16.09 Fair CLR 21.1 20.7 98% 76.25 0.0
13 05:55 NW 6 16.09 Fair CLR 20.3 20 98% 76.23 0.0
13 05:35 Calm 16.09 Partly Cloudy SCT070 20.3 20 98% 76.25 0.0
13 05:15 Calm 16.09 Overcast OVC070 20.6 20.2 98% 76.23 0.0
13 04:55 W 6 16.09 Mostly Cloudy BKN070 20.6 20.2 98% 76.25 0.0
13 04:35 W 9 16.09 Partly Cloudy SCT070 20.5 20 97% 76.23 0.0
13 04:15 W 7 16.09 Partly Cloudy SCT070 20.5 20.1 98% 76.23 0.0
13 03:55 W 7 16.09 Partly Cloudy SCT040 SCT050 SCT070 20.6 20.1 97% 76.23 0.0
13 03:35 W 7 16.09 Partly Cloudy SCT038 SCT070 20.6 20.1 97% 76.2 0.0
13 03:15 W 7 16.09 Mostly Cloudy SCT024 BKN036 21 20.3 96% 76.2 0.0
13 02:55 W 9 16.09 Partly Cloudy SCT028 SCT037 21 20.2 95% 76.2 0.0
13 02:35 W 9 16.09 Partly Cloudy SCT027 SCT039 SCT060 21.5 20.3 93% 76.2 0.0
13 02:15 SW 7 16.09 Overcast SCT027 SCT035 OVC060 21.5 20.5 94% 76.17 0.0
13 01:55 SW 7 16.09 Mostly Cloudy SCT027 BKN033 BKN049 20.7 20.2 97% 76.17 0.0
13 01:35 SW 6 16.09 Partly Cloudy SCT031 SCT046 20.7 20.2 97% 76.17 0.0
13 01:15 SW 6 16.09 Mostly Cloudy BKN031 BKN046 21 20.3 96% 76.17 0.0
13 00:55 SW 7 16.09 Mostly Cloudy BKN031 21 20.5 25.7 20.6 97% 76.17 0.0
13 00:35 SW 7 16.09 Partly Cloudy SCT031 20.6 20.1 97% 76.2 0.0
13 00:15 SW 6 16.09 Fair CLR 21 20.3 96% 76.17 0.0
12 23:55 SW 6 16.09 Fair CLR 21.5 20.6 95% 76.17 0.0
12 23:35 SW 7 16.09 Fair CLR 21.3 20.5 95% 76.2 0.0
12 23:15 SW 6 16.09 Partly Cloudy SCT033 21.6 20.7 95% 76.2 0.0
12 22:55 SW 7 16.09 Partly Cloudy SCT033 21.7 20.7 94% 76.2 0.0
12 22:35 SW 7 16.09 Fair CLR 21.9 21 95% 76.2 0.0
12 22:15 SW 7 16.09 Fair CLR 21.5 20.7 95% 76.2 0.0
12 21:55 SW 6 16.09 Fair CLR 21.5 20.8 96% 76.17 0.0
12 21:35 Calm 16.09 Fair CLR 21.8 21.1 96% 76.17 0.0
12 20:55 SW 6 16.09 Fair CLR 22.3 21.3 94% 76.12 0.0
12 20:35 Calm 16.09 Fair CLR 22.5 21.4 94% 76.1 0.0
12 20:15 Calm 16.09 Fair CLR 23.5 21.5 89% 76.07 0.0
12 19:55 W 7 16.09 Fair CLR 24.5 21 81% 25 76.07 0.0
12 19:35 Calm 16.09 Fair CLR 25.1 20.9 78% 26 76.07 0.0
12 19:15 W 6 16.09 Fair CLR 25.5 21 76% 27 76.07 0.0
12 18:55 NW 9 16.09 Mostly Cloudy SCT023 BKN045 25.8 20.6 27.2 24.2 73% 27 76.07 0.0
12 18:35 NW 11 16.09 Overcast SCT023 OVC045 25.8 20.6 73% 27 76.05 0.0
12 18:15 W 13 16.09 Overcast SCT021 SCT026 OVC041 25.3 21 77% 26 76.05 0.0
12 17:55 W 17 16.09 Overcast SCT023 BKN030 OVC039 25.3 21 77% 26 76.05 0.0
12 17:35 W 11 16.09 Overcast SCT023 OVC030 25.5 21 76% 27 76.05 0.0
12 17:15 W 15 16.09 Overcast BKN021 OVC030 25.9 21.3 76% 27 76.05 0.0
12 16:55 W 13 16.09 Overcast BKN021 OVC030 26.2 21.7 76% 28 76.02 0.0
12 16:35 W 15 16.09 Overcast BKN019 BKN027 OVC033 26.2 21.6 76% 28 76.02 0.0
12 16:15 W 13 16.09 Overcast SCT019 OVC031 26.2 21.6 76% 28 76.02 0.0
12 15:55 W 9 16.09 Overcast BKN019 OVC027 26.1 21.8 77% 28 76.02 0.0
12 15:35 W 11 16.09 Overcast BKN017 OVC025 26.5 21.9 76% 28 76.02 0.0
12 15:15 W 13 16.09 Mostly Cloudy BKN017 27 22.3 76% 29 76 0.0
12 14:55 W 13 16.09 Mostly Cloudy BKN015 BKN020 26.4 22.3 78% 28 76 0.0
12 14:35 W 15 16.09 Mostly Cloudy BKN013 BKN070 BKN095 25.8 21.9 79% 27 76 0.0
12 14:15 W 17 16.09 Mostly Cloudy SCT011 SCT028 BKN070 24.8 22.5 87% 25 76.02 0.0
12 13:55 W 13 11.27 Light Rain SCT028 BKN036 OVC044 24.6 22.6 89% 25 76.05 0.0
12 13:35 W 17 16.09 Light Rain BKN035 OVC041 24.3 21 82% 25 76.07 0.0
12 13:15 W 15 16.09 Light Rain SCT036 BKN043 OVC060 25.2 20.9 77% 26 76.07 0.0
12 12:55 SW 15 16.09 Overcast SCT028 BKN036 OVC080 26.7 20.8 27.2 20 70% 28 76.07 0.0
12 12:35 SW 15 16.09 Overcast SCT028 BKN036 OVC050 26.6 20.8 71% 28 76.1 0.0
12 12:15 SW 13 16.09 Mostly Cloudy SCT026 SCT036 BKN044 26.3 20.2 69% 28 76.07 0.0
12 11:55 SW 13 16.09 Mostly Cloudy SCT042 BKN050 26.1 20.4 71% 27 76.1 0.0
12 11:35 SW 15 16.09 Overcast OVC042 25.6 19.7 70% 27 76.1 0.0
12 11:15 SW 13 16.09 Overcast OVC046 25.6 19.5 69% 27 76.07 0.0
12 10:55 SW 11 16.09 Mostly Cloudy BKN046 BKN095 25.9 19.9 70% 27 76.07 0.0
12 10:35 SW 6 16.09 Fair CLR 25.9 20.1 70% 27 76.07 0.0
12 10:15 S 11 16.09 Partly Cloudy SCT110 25.1 19.7 72% 26 76.07 0.0
12 09:55 Calm 16.09 Mostly Cloudy BKN110 24.5 19.4 73% 25 76.07 0.0
12 09:35 Calm 16.09 Fair CLR 24.5 19.4 73% 25 76.07 0.0
12 09:15 Calm 16.09 Partly Cloudy SCT120 23.6 18.8 75% 76.07 0.0
12 08:55 NW 6 16.09 Partly Cloudy SCT110 23.5 19.4 78% 76.07 0.0
12 08:35 NW 6 16.09 Fair CLR 22.7 19.5 82% 76.07 0.0
12 08:15 NW 13 16.09 Partly Cloudy SCT120 22.1 19.3 84% 76.07 0.0
12 07:55 NW 20 G 28 16.09 Fair CLR 21.7 19.2 86% 76.07 0.0
12 07:35 NW 13 16.09 Fair CLR 21.1 19.5 91% 76.05 0.0
12 07:15 W 9 16.09 Fair CLR 20.5 19.3 93% 76.02 0.0
12 06:55 NW 11 16.09 Fair CLR 20 19 25.7 19.9 94% 76 0.0 0.1
12 06:35 NW 15 16.09 Partly Cloudy SCT075 20 19 94% 75.97 0.0
12 06:15 W 9 16.09 Partly Cloudy SCT075 20 19 94% 75.97 0.0
12 05:55 W 11 16.09 Fair CLR 20 19 94% 75.95 0.0
12 05:35 W 24 G 30 16.09 Partly Cloudy SCT010 20 19.1 95% 75.95 0.0
12 05:15 S 6 16.09 Fair CLR 20 19.1 95% 75.79 0.0
12 04:55 S 7 16.09 Fair CLR 20.1 19.3 95% 75.77 0.0
12 04:35 S 11 16.09 Fair CLR 20.2 19.3 95% 75.77 0.0
12 04:15 S 9 16.09 Fair CLR 20.3 19.3 94% 75.82 0.0
12 03:55 S 11 16.09 Fair CLR 20.4 19.5 95% 75.84 0.0 0.1
12 03:35 SW 9 16.09 Fair CLR 20.7 20 96% 75.84 0.0
12 03:15 SW 11 16.09 Fair CLR 21 20.1 95% 75.87 0.0
12 02:55 SW 6 16.09 Fair CLR 21.2 20.1 93% 75.9 0.0
12 02:35 W 7 16.09 Fair CLR 21.5 19.6 89% 75.9 0.0
12 02:15 W 9 16.09 Fair CLR 21.8 21.3 97% 75.92 0.0
12 01:55 SW 6 16.09 Fair CLR 22.2 21.6 96% 75.9 0.0 0.1
12 01:35 Calm 16.09 Fair CLR 22.6 21.5 94% 75.9 0.0 0.1
12 01:15 NW 7 8.05 Light Rain SCT042 SCT060 BKN085 23.1 21.6 91% 75.9 0.0 0.1
12 00:55 W 15 16.09 Mostly Cloudy SCT036 BKN046 BKN060 25.7 21.6 30 25 78% 27 75.92 0.0
12 00:35 S 7 16.09 Partly Cloudy SCT095 SCT120 25.3 22.7 86% 26 75.9 0.0
12 00:15 S 7 16.09 Partly Cloudy SCT095 SCT120 25.6 22.7 84% 27 75.9 0.0
11 23:55 S 11 16.09 Mostly Cloudy BKN110 26.1 22.7 82% 28 75.87 0.0
11 23:35 S 13 16.09 Partly Cloudy SCT090 26.5 22.7 80% 29 75.87 0.0
11 23:15 S 13 16.09 Fair CLR 26.4 22.6 80% 28 75.9 0.0
11 22:55 S 11 16.09 Fair CLR 25.4 22.7 85% 27 75.92 0.0
11 22:35 S 11 16.09 Thunderstorm in Vicinity CLR 25.1 22.7 87% 26 75.9 0.0
11 22:15 S 7 16.09 Fair CLR 25 22.6 87% 26 75.9 0.0
11 21:55 S 9 16.09 Fair CLR 25.6 22.5 83% 27 75.92 0.0
11 21:35 S 11 16.09 Fair CLR 25.8 22.5 82% 27 75.9 0.0
11 21:15 S 9 16.09 Fair CLR 26 23 84% 28 75.9 0.0
11 20:55 S 9 16.09 Fair CLR 26.2 23.1 83% 28 75.92 0.0
11 20:35 S 7 16.09 Fair CLR 26.5 23 81% 29 75.92 0.0
11 20:15 S 7 16.09 Fair CLR 27.2 23 78% 30 75.9 0.0
11 19:55 S 9 16.09 Fair CLR 28 23 74% 31 75.92 0.0
11 19:35 S 9 16.09 Fair CLR 28.4 23.1 73% 32 75.9 0.0
11 19:15 S 9 16.09 Partly Cloudy SCT060 29.2 23 69% 33 75.9 0.0
11 18:55 S 13 16.09 Partly Cloudy SCT060 30 22.5 32.1 30 64% 34 75.9 0.0
11 18:35 S 15 16.09 Fair CLR 30.5 22.3 62% 34 75.87 0.0
11 18:15 S 15 16.09 Fair CLR 31 22 59% 35 75.87 0.0
11 17:55 S 17 16.09 Fair CLR 31.1 21.7 57% 34 75.84 0.0
11 17:35 S 19 G 28 16.09 Fair CLR 31.5 21.5 55% 35 75.84 0.0
11 17:15 S 22 G 31 16.09 Fair CLR 31.7 21.5 55% 35 75.87 0.0
11 16:55 S 22 G 33 16.09 Fair CLR 31.6 20.7 52% 34 75.9 0.0
11 16:35 S 24 G 33 16.09 Fair CLR 31.6 20.7 52% 34 75.9 0.0
11 16:15 S 22 16.09 Fair CLR 31.8 20.8 52% 35 75.92 0.0
11 15:55 S 20 G 26 16.09 Fair CLR 31.8 21.2 53% 35 75.95 0.0
11 15:35 S 20 G 33 16.09 Fair CLR 31.9 20.3 50% 34 75.95 0.0
11 15:15 S 22 G 30 16.09 Partly Cloudy SCT050 31.9 20.7 52% 35 75.97 0.0
11 14:55 S 15 G 26 16.09 Partly Cloudy SCT050 31.9 20.8 52% 35 76.02 0.0
11 14:35 S 11 16.09 Partly Cloudy SCT050 31.4 20.4 52% 34 76.02 0.0
11 14:15 S 17 16.09 Partly Cloudy SCT047 SCT055 31.6 21.1 54% 35 76.05 0.0
11 13:55 S 15 16.09 Mostly Cloudy BKN045 BKN055 30.8 21.6 58% 34 76.05 0.0
11 13:35 S 13 16.09 Mostly Cloudy BKN043 BKN065 30.5 21.4 58% 33 76.07 0.0
11 13:15 S 13 16.09 Mostly Cloudy BKN041 BKN049 31 22 59% 35 76.05 0.0
11 12:55 S 17 G 26 16.09 Partly Cloudy SCT041 31.4 21.7 31.6 23.2 56% 35 76.05 0.0
11 12:35 S 19 G 26 16.09 Fair CLR 31 21.9 58% 34 76.07 0.0
11 11:55 S 13 16.09 Mostly Cloudy SCT050 BKN070 30.7 22.4 61% 35 76.1 0.0
11 11:35 SW 11 16.09 Mostly Cloudy BKN050 BKN070 30.3 21.9 61% 34 76.12 0.0
11 11:15 S 9 16.09 Mostly Cloudy BKN050 29.8 21.8 62% 33 76.12 0.0
11 10:55 S 13 16.09 Fair CLR 29.3 21.4 62% 32 76.12 0.0
11 10:35 S 9 16.09 Fair CLR 28.8 21.4 64% 31 76.1 0.0
11 10:15 S 13 16.09 Fair CLR 28.7 21.8 66% 31 76.1 0.0
11 09:55 S 15 16.09 Fair CLR 28.1 21.8 69% 31 76.1 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)