National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce
Weather observations for the past three days for
Graham, Graham 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 17:35 Calm 14.48 Overcast OVC020 16.3 13.1 81% 76 0.0
30 17:15 NE 7 16.09 Overcast OVC021 16.3 12.9 80% 76.02 0.0
30 16:55 NE 7 16.09 Overcast OVC019 16.3 12.9 80% 76 0.0
30 16:35 Calm 16.09 Overcast OVC019 16.5 13 80% 76 0.0
30 16:15 NE 13 16.09 Overcast OVC019 16.5 13.1 80% 75.97 0.0
30 15:55 NE 9 16.09 Overcast OVC019 16.5 13.2 81% 76.02 0.0
30 15:35 NE 11 16.09 Overcast OVC018 16.3 13.2 82% 76.02 0.0
30 15:15 E 11 16.09 Overcast OVC018 16.3 13.1 81% 76.05 0.0
30 14:55 E 13 16.09 Overcast BKN015 OVC023 16.9 13.4 80% 76 0.0
30 14:35 NE 15 16.09 Overcast OVC014 16.5 13.6 83% 76 0.0
30 14:15 NE 9 16.09 Overcast OVC015 16.2 13.3 83% 76.07 0.0
30 13:55 NE 9 16.09 Overcast OVC016 16.2 13.3 83% 76.07 0.0
30 13:35 Vrbl 9 16.09 Overcast OVC015 16.3 13.5 84% 76.02 0.0
30 13:15 NE 13 16.09 Overcast OVC015 16.2 13.5 84% 76.05 0.0
30 12:55 NE 13 16.09 Overcast OVC014 16 13.3 16.1 11.8 84% 76.1 0.0 0.2 0.2
30 12:35 NE 15 16.09 Overcast OVC014 15.8 13.2 85% 76.12 0.0 0.2
30 12:15 NE 11 16.09 Overcast OVC013 15.5 13.1 86% 76.12 0.0
30 11:55 Vrbl 11 16.09 Mostly Cloudy BKN013 15.5 13.2 86% 76.1 0.0
30 11:35 N 13 16.09 Partly Cloudy SCT016 15.5 13.3 87% 76.12 0.0
30 11:15 N 15 16.09 Overcast OVC014 14.9 13.2 90% 76.15 0.0
30 10:55 N 20 9.66 Light Rain Fog/Mist OVC011 14 12.7 92% 76.15 0.0
30 10:35 N 11 14.48 Overcast BKN013 OVC018 14.2 12.7 91% 76.12 0.0
30 10:15 Calm 16.09 Partly Cloudy SCT016 13.6 12.5 93% 76.12 0.0
30 09:55 E 9 11.27 Light Rain FEW049 13 11.9 93% 76.07 0.0
30 09:35 NE 13 9.66 Light Rain Fog/Mist FEW013 SCT025 SCT048 BKN065 13 11.7 92% 76.1 0.0
30 09:15 Vrbl 11 11.27 Light Rain FEW014 SCT043 SCT065 BKN090 13 11.4 90% 76.25 0.0
30 08:55 Vrbl 9 16.09 Mostly Cloudy BKN040 BKN100 13.1 11 87% 76.1 0.0
30 08:35 NE 6 16.09 Mostly Cloudy BKN039 12.9 10.8 87% 76.15 0.0
30 08:15 NE 9 14.48 Mostly Cloudy BKN038 12.6 10.6 88% 76.1 0.0
30 07:55 NE 11 14.48 Partly Cloudy SCT018 12.3 10.4 88% 76.12 0.0
30 07:35 NE 7 14.48 Partly Cloudy FEW018 SCT190 12.1 10.3 89% 76.1 0.0
30 07:15 N 9 14.48 Mostly Cloudy FEW037 BKN190 11.8 10.2 90% 76.07 0.0
30 06:55 NE 6 16.09 Partly Cloudy SCT036 11.8 10.2 13.6 11.8 90% 76.07 0.0
30 06:35 NE 7 16.09 Mostly Cloudy SCT036 BKN200 11.9 10.3 90% 76.05 0.0
30 06:15 NE 7 16.09 Partly Cloudy FEW036 SCT200 11.9 10.5 91% 76.05 0.0
30 05:55 NE 9 16.09 Fair CLR 12.1 10.4 89% 76.07 0.0
30 05:35 N 9 16.09 Partly Cloudy SCT035 12.2 10.4 89% 76.1 0.0
30 05:15 NE 7 16.09 Overcast OVC035 12.7 10.3 85% 76.07 0.0
30 04:55 NE 9 14.48 Mostly Cloudy BKN035 12.8 10.3 85% 76.07 0.0
30 04:35 NE 7 16.09 Partly Cloudy SCT035 12.9 10.3 84% 76.07 0.0
30 04:15 NE 7 16.09 Fair CLR 13.1 10.2 83% 76.05 0.0
30 03:55 Vrbl 9 16.09 A Few Clouds FEW034 13.3 10.3 82% 76.05 0.0
30 03:35 NE 11 16.09 Mostly Cloudy FEW025 BKN033 13.3 10.2 82% 76.05 0.0
30 03:15 NE 11 16.09 Overcast SCT025 OVC032 13.6 10.4 81% 76.1 0.0
30 02:55 Vrbl 7 16.09 Overcast FEW026 OVC033 13.1 11.1 88% 76.07 0.0
30 02:35 NE 6 16.09 Mostly Cloudy BKN033 12.8 11.2 90% 76.1 0.0
30 02:15 N 7 16.09 Fair CLR 12.5 11.1 91% 76.1 0.0
30 01:55 NE 6 14.48 Fair CLR 12.3 11 92% 76.1 0.0
30 01:35 NE 7 14.48 Fair CLR 12.4 11 91% 76.1 0.0
30 01:15 N 7 16.09 Fair CLR 12.7 11.2 91% 76.15 0.0
30 00:55 N 6 16.09 Fair CLR 13.1 11.5 16.3 13.1 90% 76.15 0.0
30 00:35 Calm 16.09 Fair CLR 13.5 11.6 88% 76.15 0.0
30 00:15 Calm 16.09 Fair CLR 13.9 11.5 86% 76.15 0.0
29 23:55 Calm 16.09 Fair CLR 14.2 11.5 84% 76.17 0.0
29 23:35 N 6 16.09 Fair CLR 14.4 11.4 82% 76.2 0.0
29 22:55 Calm 16.09 Overcast BKN037 OVC048 15.6 11.3 76% 76.2 0.0
29 22:35 NE 7 16.09 Overcast OVC036 15.8 11.3 75% 76.17 0.0
29 22:15 NE 7 16.09 Overcast OVC036 15.9 11.2 74% 76.17 0.0
29 21:55 NE 7 16.09 Overcast OVC037 15.9 10.9 72% 76.15 0.0
29 21:35 NE 7 16.09 Overcast OVC036 16 10.7 71% 76.15 0.0
29 21:15 Vrbl 9 16.09 Overcast OVC035 16.1 10.9 71% 76.15 0.0
29 20:55 N 11 16.09 Overcast OVC036 16.1 11.1 72% 76.12 0.0
29 20:35 N 13 16.09 Overcast OVC034 16.2 11.1 72% 76.07 0.0
29 20:15 N 19 16.09 Overcast SCT028 OVC035 16.2 11.2 72% 76.07 0.0
29 19:55 N 9 16.09 Overcast SCT028 OVC034 16.1 11.6 75% 76.07 0.0
29 19:35 NE 7 16.09 Overcast OVC034 16.2 11.4 73% 76.02 0.0
29 19:15 NE 6 16.09 Overcast OVC033 16.2 11.2 72% 76.05 0.0
29 18:55 Vrbl 7 16.09 Overcast OVC033 16.2 10.8 17.7 15.8 71% 76.07 0.0
29 18:35 NE 6 16.09 Overcast OVC033 16.2 11 71% 76.07 0.0
29 18:15 NE 11 16.09 Overcast OVC032 16.2 10.9 71% 76.02 0.0
29 17:55 Vrbl 11 16.09 Overcast BKN029 OVC036 16.3 11 71% 76.02 0.0
29 17:35 NE 9 16.09 Overcast OVC033 16 10.7 71% 76.05 0.0
29 17:15 Vrbl 11 16.09 Overcast OVC031 16.1 10.6 70% 76.02 0.0
29 16:55 N 17 16.09 Overcast OVC030 16.2 10.7 70% 76.07 0.0
29 16:35 N 15 16.09 Overcast OVC030 16.3 10.8 70% 76.02 0.0
29 16:15 N 19 16.09 Overcast OVC030 16.4 10.7 69% 76.05 0.0
29 15:55 N 22 16.09 Overcast OVC033 16.3 10.8 70% 76.05 0.0
29 15:35 N 17 16.09 Overcast OVC034 16.3 10.8 70% 76.07 0.0
29 15:15 NE 15 16.09 Overcast OVC036 16.5 10.7 69% 76.1 0.0
29 14:55 N 15 16.09 Mostly Cloudy BKN036 BKN160 16.6 10.7 68% 76.15 0.0
29 14:35 N 20 16.09 Mostly Cloudy SCT034 SCT160 BKN200 16.9 10.9 68% 76.12 0.0
29 14:15 N 19 G 35 16.09 Overcast BKN034 OVC210 16.7 10.7 68% 76.1 0.0
29 13:55 NE 17 16.09 Overcast OVC035 16.5 10.7 69% 76.17 0.0
29 13:35 N 20 16.09 Overcast OVC033 17.7 11.5 67% 76.15 0.0
29 13:15 N 15 16.09 Overcast OVC033 16.3 10.4 68% 76.23 0.0
29 12:55 N 15 16.09 Overcast OVC039 15.5 10.3 15.5 13.9 71% 76.3 0.0
29 12:35 N 17 16.09 Overcast OVC040 15.5 10.4 72% 76.3 0.0
29 12:15 N 19 16.09 Overcast OVC039 15 10 72% 76.3 0.0
29 11:55 N 19 16.09 Overcast OVC038 14.7 9.9 73% 76.28 0.0
29 11:35 N 22 16.09 Overcast OVC038 14.9 10.1 73% 76.28 0.0
29 11:15 N 17 16.09 Overcast OVC039 14.8 10.3 75% 76.28 0.0
29 10:55 N 17 16.09 Overcast OVC038 14.7 10.1 74% 76.28 0.0
29 10:35 N 19 16.09 Overcast FEW021 OVC037 14.5 10.1 75% 76.28 0.0
29 10:15 N 19 16.09 Overcast FEW019 OVC036 14.4 10.4 77% 76.3 0.0
29 09:55 N 19 16.09 Overcast OVC034 14 10.3 79% 76.3 0.0
29 09:35 N 17 14.48 Overcast OVC033 14.1 10.6 80% 76.28 0.0
29 09:15 NE 19 14.48 Overcast FEW018 OVC034 14 10.7 81% 76.28 0.0
29 08:55 NE 15 14.48 Overcast BKN018 OVC031 14 10.7 81% 76.28 0.0
29 08:35 N 17 14.48 Overcast SCT018 OVC031 14.1 10.7 80% 76.25 0.0
29 08:15 NE 19 G 31 14.48 Overcast SCT019 OVC029 14 10.5 80% 76.2 0.0
29 07:55 N 19 G 33 14.48 Overcast OVC028 14.2 10.2 77% 76.15 0.0
29 07:35 NE 19 G 28 14.48 Overcast OVC027 14.3 10.2 77% 76.15 0.0
29 07:15 NE 20 G 31 14.48 Overcast OVC027 14.5 10.1 75% 76.12 0.0
29 06:55 NE 17 G 31 14.48 Overcast OVC025 14.5 10.4 17.8 14.5 77% 76.15 0.0
29 06:35 NE 17 16.09 Overcast OVC026 14.6 10.7 78% 76.12 0.0
29 06:15 NE 22 G 31 16.09 Overcast OVC023 14.6 10.8 78% 76.1 0.0
29 05:55 NE 11 16.09 Overcast OVC021 15 11.1 78% 76.1 0.0
29 05:35 NE 22 G 33 16.09 Overcast OVC021 15.1 10.8 76% 76.12 0.0
29 05:15 NE 17 16.09 Overcast OVC020 15.3 11.5 78% 76.07 0.0
29 04:55 N 22 G 35 16.09 Overcast OVC019 15.6 11.9 79% 76.05 0.0
29 04:35 NE 13 16.09 Overcast OVC022 15.9 12 78% 76.05 0.0
29 04:15 NE 17 16.09 Overcast OVC022 16.1 11.9 76% 76.02 0.0
29 03:55 NE 15 16.09 Overcast OVC020 16.6 12 74% 76.05 0.0
29 03:35 N 15 16.09 Overcast OVC019 16.9 12.2 74% 76 0.0
29 03:15 NE 13 16.09 Overcast OVC019 17.1 12.3 74% 76.02 0.0
29 02:55 NE 13 16.09 Overcast BKN017 OVC033 17.3 12.6 74% 76.02 0.0
29 02:35 NE 11 16.09 Overcast FEW018 OVC034 17.4 12.9 75% 76 0.0
29 02:15 NE 11 16.09 Overcast FEW018 OVC035 17.5 13 75% 76 0.0
29 01:55 NE 15 16.09 Mostly Cloudy FEW018 BKN037 17.6 13.1 75% 76 0.0
29 01:35 NE 13 16.09 Fair CLR 17.4 13.1 76% 75.97 0.0
29 01:15 NE 11 16.09 A Few Clouds FEW020 17.7 13 74% 76 0.0
29 00:55 Vrbl 9 16.09 Overcast OVC018 18.1 13.5 25.1 18.1 75% 76 0.0
29 00:35 NE 11 16.09 Overcast OVC018 18.3 13.8 75% 76.02 0.0
29 00:15 NE 13 16.09 Mostly Cloudy BKN019 BKN070 BKN085 18.5 14 75% 76 0.0
28 23:55 NE 13 G 30 16.09 Partly Cloudy SCT070 18.7 15.1 80% 76 0.0
28 23:35 NE 19 16.09 Fair CLR 18.9 15.2 79% 76.02 0.0
28 23:15 NE 15 16.09 Fair CLR 19.3 16 81% 76 0.0
28 22:55 NE 20 G 37 16.09 Fair CLR 20 16.3 79% 75.95 0.0
28 22:35 NE 15 G 30 16.09 Fair CLR 20.4 16.7 79% 75.92 0.0
28 22:15 NE 17 16.09 Partly Cloudy SCT070 20.9 17.4 81% 75.9 0.0
28 21:55 N 17 16.09 Partly Cloudy SCT075 21.4 18 81% 75.9 0.0
28 21:35 N 17 G 26 16.09 A Few Clouds FEW075 21.5 18.6 84% 75.87 0.0
28 21:15 N 15 16.09 Fair CLR 21.7 19.5 87% 75.84 0.0
28 20:55 N 11 16.09 Fair CLR 22.2 19.8 86% 75.82 0.0
28 20:35 NE 7 16.09 Fair CLR 22.5 20.3 87% 75.79 0.0
28 20:15 NE 6 16.09 Fair CLR 23.1 20.6 86% 75.79 0.0
28 19:55 NE 7 16.09 Fair CLR 24 21.1 84% 24 75.77 0.0
28 19:35 E 6 16.09 Fair CLR 24.5 21.3 82% 25 75.77 0.0
28 19:15 NE 7 16.09 Fair CLR 25 21 79% 26 75.72 0.0
28 18:55 NE 17 16.09 Fair CLR 25.5 21.1 32.4 24 77% 27 75.67 0.0
28 18:35 NE 15 16.09 Fair CLR 25.8 20.9 74% 27 75.67 0.0
28 18:15 NE 11 16.09 Fair CLR 26.2 21 73% 28 75.67 0.0
28 17:55 NE 15 16.09 Fair CLR 26.4 20.8 71% 28 75.64 0.0
28 17:35 NE 13 G 31 16.09 Fair CLR 26.5 22.1 77% 28 75.64 0.0
28 17:15 E 13 16.09 Fair CLR 28.3 21 65% 30 75.64 0.0
28 16:55 NE 15 G 31 16.09 Fair CLR 28.3 22.2 70% 31 75.54 0.0
28 16:35 N 20 G 31 16.09 A Few Clouds FEW060 27.7 22.3 72% 30 75.57 0.0
28 16:15 NE 11 16.09 Overcast FEW040 BKN050 OVC060 25.1 22.9 88% 26 75.59 0.0
28 15:55 NW 22 G 43 4.83 Heavy Rain Fog/Mist BKN039 24.5 22.4 88% 25 75.62 0.0
28 15:35 N 26 G 48 16.09 A Few Clouds FEW043 29.8 22.4 65% 33 75.46 0.0
28 15:15 SW 22 G 37 16.09 A Few Clouds FEW310 32.3 23 58% 37 75.51 0.0
28 14:55 SW 37 G 44 16.09 Fair and Breezy CLR 32.1 22.7 58% 37 75.49 0.0
28 14:35 SW 26 G 41 16.09 Fair CLR 31 22.5 61% 35 75.51 0.0
28 14:15 Vrbl 11 16.09 Fair CLR 29.3 22.4 66% 33 75.59 0.0
28 13:55 SW 17 16.09 Partly Cloudy FEW037 SCT250 30.3 22.6 63% 34 75.67 0.0
28 13:35 S 19 G 28 16.09 Partly Cloudy FEW034 SCT280 30.5 22.7 63% 35 75.69 0.0
28 13:15 S 15 16.09 Partly Cloudy SCT036 30.3 23 65% 35 75.72 0.0
28 12:55 S 13 16.09 Partly Cloudy FEW031 SCT048 SCT290 SCT370 29.9 23 30.1 23.5 67% 34 75.74 0.0
28 12:35 S 17 16.09 Mostly Cloudy FEW030 BKN049 29.8 23.2 68% 34 75.77 0.0
28 12:15 S 15 G 30 16.09 Mostly Cloudy FEW031 BKN040 BKN046 29.2 22.9 69% 33 75.79 0.0
28 11:55 S 13 G 28 16.09 Mostly Cloudy FEW024 BKN032 BKN042 28.4 22.8 72% 32 75.79 0.0
28 11:35 Vrbl 9 16.09 Partly Cloudy FEW024 SCT032 28.6 23.3 73% 32 75.79 0.0
28 11:15 Vrbl 9 16.09 Partly Cloudy SCT024 SCT029 28.7 23.6 74% 33 75.79 0.0
28 10:55 S 13 16.09 Mostly Cloudy BKN026 BKN037 27.7 23.5 78% 31 75.79 0.0
28 10:35 S 13 16.09 Overcast SCT021 BKN029 OVC038 27.2 23.3 79% 30 75.79 0.0
28 10:15 Vrbl 7 16.09 Mostly Cloudy FEW018 BKN038 26.3 23.6 85% 29 75.82 0.0
28 09:55 S 9 16.09 Mostly Cloudy FEW017 BKN039 25.7 23.2 86% 27 75.84 0.0
28 09:35 Vrbl 6 16.09 Partly Cloudy SCT016 SCT038 25.3 23.2 88% 26 75.84 0.0
28 09:15 SE 7 16.09 Partly Cloudy FEW015 SCT037 24.9 23.1 90% 25 75.84 0.0
28 08:55 S 6 16.09 Mostly Cloudy BKN014 24.3 22.9 92% 24 75.84 0.0
28 08:35 Vrbl 6 12.87 Overcast OVC015 24.1 22.9 93% 24 75.82 0.0
28 08:15 Vrbl 6 12.87 Overcast OVC018 24 22.8 93% 23 75.79 0.0
28 07:55 Vrbl 9 12.87 Partly Cloudy SCT018 23.8 22.8 94% 75.77 0.0
28 07:35 Vrbl 11 11.27 Mostly Cloudy BKN019 23.6 22.8 95% 75.74 0.0
28 07:15 SE 7 12.87 Overcast BKN017 OVC023 23.6 22.8 95% 75.74 0.0
28 06:55 SE 7 12.87 Overcast OVC017 23.4 22.6 24.1 21.8 95% 75.72 0.0 0.03
28 06:35 E 7 14.48 Light Rain OVC016 23.5 22.6 95% 75.72 0.0
28 06:15 Calm 16.09 Overcast OVC017 23.5 22.5 94% 75.72 0.0
28 05:55 SE 6 16.09 A Few Clouds FEW019 23.6 22.4 93% 75.69 0.0
28 05:35 Vrbl 7 14.48 Fair CLR 23.8 22.4 92% 75.69 0.0
28 05:15 Vrbl 7 16.09 A Few Clouds FEW190 23.9 22.4 91% 23 75.67 0.0
28 04:55 SE 6 16.09 A Few Clouds FEW200 23.8 22.2 91% 75.67 0.0 0.03
28 04:35 SE 7 16.09 Fair CLR 24.1 22.2 89% 24 75.67 0.0
28 04:15 SE 9 16.09 Fair CLR 23.9 22.2 90% 23 75.64 0.0
28 03:55 SE 7 16.09 Fair CLR 23.8 21.9 89% 75.64 0.0
28 03:35 Vrbl 7 16.09 Fair CLR 23.8 22 90% 75.67 0.0
28 03:15 S 6 6.44 Fog/Mist CLR 23.7 21.9 90% 75.72 0.0
28 02:55 Vrbl 6 6.44 Fog/Mist CLR 22.8 21.7 94% 75.72 0.0
28 02:35 Calm 6.44 Fog/Mist CLR 22 21.2 95% 75.72 0.0
28 02:15 Calm 6.44 Fog/Mist CLR 22.2 21.2 94% 75.72 0.0
28 01:55 SE 6 4.83 Fog/Mist CLR 22.1 20.9 93% 75.72 0.0
28 01:35 E 6 4.02 Fog/Mist CLR 22 20.7 92% 75.69 0.0
28 01:15 E 7 4.02 Fog/Mist CLR 21.8 20.1 90% 75.69 0.0
28 00:55 Calm 4.83 Fair with Haze CLR 22.5 20.1 30.8 21.4 86% 75.72 0.0
28 00:35 NE 7 6.44 Fair with Haze CLR 22.7 19.9 84% 75.69 0.0
28 00:15 E 7 6.44 Fair with Haze CLR 23.4 19.9 81% 75.69 0.0
27 23:55 E 7 4.83 Fair with Haze CLR 23.5 19.3 77% 75.69 0.0
27 23:35 SE 9 4.83 Fair with Haze CLR 23.2 18.5 75% 75.69 0.0
27 23:15 E 6 4.83 Fair with Haze CLR 21.4 15.2 68% 75.72 0.0
27 22:55 Vrbl 9 9.66 Fair with Haze CLR 21.9 13.9 61% 75.69 0.0
27 22:35 NE 7 11.27 Fair CLR 22.2 13.5 58% 75.69 0.0
27 22:15 NE 6 9.66 Fair with Haze CLR 22.1 13.5 58% 75.69 0.0
27 21:55 NE 6 9.66 Fair with Haze CLR 22.7 13.9 58% 75.67 0.0
27 21:35 NE 6 11.27 Fair CLR 23.6 13.6 54% 75.64 0.0
27 21:15 SE 7 8.05 Fair with Haze CLR 25 11.8 44% 26 75.62 0.0
27 20:55 SE 9 9.66 Fair with Haze CLR 25.5 11.4 41% 26 75.59 0.0
27 20:35 SE 7 8.05 Fair with Haze CLR 25.6 11.8 42% 26 75.59 0.0
27 20:15 SE 7 6.44 Fair with Haze CLR 25.9 13.3 46% 26 75.57 0.0
27 19:55 SE 7 2.82 Light Rain CLR 26.9 14.2 46% 27 75.54 0.0
27 19:35 SE 7 6.44 Light Rain CLR 28.1 15.7 47% 28 75.54 0.0
27 19:15 SE 6 16.09 Fair CLR 29.9 14.9 40% 30 75.51 0.0
27 18:55 SE 6 16.09 Fair CLR 31.5 13 33.5 31.1 32% 31 75.51 0.0
27 18:35 S 6 16.09 Fair CLR 32.1 10.3 26% 31 75.51 0.0
27 18:15 S 7 16.09 Fair CLR 32.6 10.4 25% 31 75.51 0.0
27 17:55 S 9 16.09 Fair CLR 32.9 8.8 22% 31 75.51 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)