MONTHLY CLIMATOLOGICAL SUMMARY for DEC. 2009 NAME: Ranch2 CITY: Petaluma STATE: CA ELEV: 26 ft LAT: 38° 09' 45" N LONG: 122° 46' 51" W TEMPERATURE (°F), RAIN (in), WIND SPEED (mph) HEAT COOL AVG MEAN DEG DEG WIND DOM DAY TEMP HIGH TIME LOW TIME DAYS DAYS RAIN SPEED HIGH TIME DIR ------------------------------------------------------------------------------------ 1 43.8 69.2 1:15p 31.3 7:15a 21.5 0.3 0.01 0.6 9.0 2:15p SSE 2 43.2 57.2 2:00p 36.5 12:15a 21.8 0.0 0.00 0.7 10.0 2:15p SSE 3 44.9 57.1 1:00p 39.4 9:45p 20.1 0.0 0.00 0.8 11.0 2:00p SSE 4 44.9 66.7 1:30p 35.2 8:15a 20.1 0.0 0.01 0.3 14.0 1:45p SSE 5 44.6 62.4 1:30p 29.3 12:00m 20.4 0.0 0.00 0.7 11.0 1:30p ESE 6 40.2 52.6 11:00a 28.8 2:00a 24.8 0.0 0.29 1.0 19.0 9:00a SSE 7 37.3 53.3 12:30p 26.4 12:00m 27.7 0.0 0.05 0.4 11.0 3:30p NNE 8 33.0 49.6 3:30p 22.2 7:15a 32.0 0.0 0.01 0.0 4.0 2:00p SSE 9 36.1 50.3 2:00p 23.8 7:45a 28.9 0.0 0.00 0.8 12.0 2:15p NNE 10 42.7 47.1 2:00p 40.1 7:00a 22.3 0.0 0.02 2.3 16.0 12:00p NW 11 43.3 52.3 12:00m 41.3 12:45a 21.7 0.0 0.48 1.2 13.0 11:00a NW 12 52.1 54.6 1:00p 49.9 4:30p 12.9 0.0 0.76 3.1 26.0 3:45p NNE 13 51.2 59.4 2:00p 46.5 10:15p 13.8 0.0 0.36 1.0 19.0 5:15a NNE 14 47.6 57.6 2:15p 41.8 8:00a 17.4 0.0 0.00 0.1 5.0 3:30a NE 15 51.3 56.9 12:45p 44.5 12:15a 13.7 0.0 0.00 0.9 16.0 11:15p NNE 16 52.7 55.8 12:15a 49.4 11:45p 12.3 0.0 0.29 0.8 17.0 12:30a WNW 17 52.8 70.9 2:15p 41.5 11:45p 12.7 0.4 0.00 0.0 5.0 6:30a NNE 18 52.9 71.3 1:00p 40.4 3:15a 12.7 0.6 0.01 0.2 9.0 1:15p WSW 19 50.6 64.0 2:00p 46.1 11:45p 14.4 0.0 0.00 0.2 12.0 3:15p WSW 20 51.3 62.2 1:00p 45.8 2:15a 13.7 0.0 0.19 0.1 6.0 12:45p NW 21 51.4 55.3 11:00a 43.6 11:45p 13.6 0.0 0.19 1.4 17.0 11:00a NE 22 45.0 56.7 2:45p 35.8 12:00m 20.0 0.0 0.00 1.5 20.0 2:15p SSE 23 41.9 64.7 12:45p 28.8 7:45a 23.1 0.0 0.00 0.4 9.0 12:30a SSE 24 42.0 70.9 2:45p 30.1 5:15a 23.4 0.4 0.01 0.0 4.0 7:15a N 25 44.8 69.4 1:00p 31.9 12:30a 20.4 0.2 0.01 0.3 10.0 3:30p NW 26 44.2 52.7 2:15p 35.2 12:45a 20.8 0.0 0.22 0.2 5.0 10:30a WNW 27 47.8 53.0 2:30p 45.0 12:00m 17.2 0.0 0.01 0.0 5.0 9:15a WNW 28 45.8 54.0 3:15p 36.3 11:00p 19.2 0.0 0.03 0.0 5.0 1:30p NE 29 44.2 55.0 12:30p 34.8 7:30a 20.8 0.0 0.33 0.8 16.0 9:15p N 30 51.1 61.6 12:00p 46.0 8:15a 13.9 0.0 0.00 0.3 10.0 12:15a SSE 31 51.3 59.4 11:45a 47.3 2:15a 13.7 0.0 0.02 0.4 10.0 7:45p WNW ------------------------------------------------------------------------------------- 46.0 71.3 18 22.2 8 591.0 1.9 3.30 0.7 26.0 12 NNE Max >= 90.0: 0 Max <= 32.0: 0 Min <= 32.0: 9 Min <= 0.0: 0 Max Rain: 0.76 ON 12/12/09 Days of Rain: 13 (>.01 in) 9 (>.1 in) 0 (>1 in) Heat Base: 65.0 Cool Base: 65.0 Method: Integration